Remove snappy (closes issue #402)

19 files changed, 0 insertions, 5115 deletions

diff --git a/main/jni/Android.mk b/main/jni/Android.mk
index e5707c54..0b35dabe 100644
--- a/main/jni/Android.mk
+++ b/main/jni/Android.mk
@@ -9,8 +9,6 @@ JNI_DIR := $(call my-dir)
 
 
 include lzo/Android.mk
-include snappy/Android.mk
-
 include openssl/Android.mk
 
 ifeq ($(TARGET_ARCH),mips)
diff --git a/main/openvpn b/main/openvpn
-Subproject 43936eea2402473c269ba63d76a6609e9a4d081
+Subproject b6801da357c27f7669c416af4733a6f4e669021
diff --git a/main/snappy/Android.mk b/main/snappy/Android.mk
deleted file mode 100644
index cdd26003..00000000
--- a/main/snappy/Android.mk
+++ /dev/null
@@ -1,35 +0,0 @@
-
-LOCAL_PATH:= $(call my-dir)
-
-
-common_SRC_FILES:=  \
-	snappy-c.cc \
-	snappy-sinksource.cc \
-	snappy-stubs-internal.cc \
-	snappy.cc
-
-common_C_INCLUDES += $(LOCAL_PATH)/ $(LOCAL_PATH)/conf
-
-# static library
-# =====================================================
-
-include $(CLEAR_VARS)
-LOCAL_CPP_EXTENSION := .cc
-LOCAL_SRC_FILES:= $(common_SRC_FILES)
-LOCAL_C_INCLUDES:= $(common_C_INCLUDES)
-LOCAL_MODULE := snappy-static
-LOCAL_PRELINK_MODULE:= false
-LOCAL_MODULE_TAGS := optional
-include $(BUILD_STATIC_LIBRARY)
-
-# dynamic library
-# =====================================================
-
-# include $(CLEAR_VARS)
-# LOCAL_SRC_FILES:= $(common_SRC_FILES)
-# LOCAL_C_INCLUDES:= $(common_C_INCLUDES)
-# LOCAL_MODULE := liblzo
-# LOCAL_PRELINK_MODULE:= false
-# LOCAL_MODULE_TAGS := optional
-# include $(BUILD_SHARED_LIBRARY)
-
diff --git a/main/snappy/COPYING b/main/snappy/COPYING
deleted file mode 100644
index 8d6bd9fe..00000000
--- a/main/snappy/COPYING
+++ /dev/null
@@ -1,28 +0,0 @@
-Copyright 2011, Google Inc.
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-    * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/main/snappy/conf/config.h b/main/snappy/conf/config.h
deleted file mode 100644
index e0bf3214..00000000
--- a/main/snappy/conf/config.h
+++ /dev/null
@@ -1,129 +0,0 @@
-/* config.h.  Generated from config.h.in by configure.  */
-/* config.h.in.  Generated from configure.ac by autoheader.  */
-
-/* Define if building universal (internal helper macro) */
-/* #undef AC_APPLE_UNIVERSAL_BUILD */
-
-/* Define to 1 if the compiler supports __builtin_ctz and friends. */
-#define HAVE_BUILTIN_CTZ 1
-
-/* Define to 1 if the compiler supports __builtin_expect. */
-#define HAVE_BUILTIN_EXPECT 1
-
-/* Define to 1 if you have the <byteswap.h> header file. */
-/* #undef HAVE_BYTESWAP_H */
-
-/* Define to 1 if you have the <dlfcn.h> header file. */
-#define HAVE_DLFCN_H 1
-
-/* Use the gflags package for command-line parsing. */
-/* #undef HAVE_GFLAGS */
-
-/* Defined when Google Test is available. */
-/* #undef HAVE_GTEST */
-
-/* Define to 1 if you have the <inttypes.h> header file. */
-#define HAVE_INTTYPES_H 1
-
-/* Define to 1 if you have the `fastlz' library (-lfastlz). */
-/* #undef HAVE_LIBFASTLZ */
-
-/* Define to 1 if you have the `lzf' library (-llzf). */
-/* #undef HAVE_LIBLZF */
-
-/* Define to 1 if you have the `lzo2' library (-llzo2). */
-/* #undef HAVE_LIBLZO2 */
-
-/* Define to 1 if you have the `quicklz' library (-lquicklz). */
-/* #undef HAVE_LIBQUICKLZ */
-
-/* Define to 1 if you have the `z' library (-lz). */
-#define HAVE_LIBZ 1
-
-/* Define to 1 if you have the <memory.h> header file. */
-#define HAVE_MEMORY_H 1
-
-/* Define to 1 if you have the <stddef.h> header file. */
-#define HAVE_STDDEF_H 1
-
-/* Define to 1 if you have the <stdint.h> header file. */
-#define HAVE_STDINT_H 1
-
-/* Define to 1 if you have the <stdlib.h> header file. */
-#define HAVE_STDLIB_H 1
-
-/* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H 1
-
-/* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H 1
-
-/* Define to 1 if you have the <sys/byteswap.h> header file. */
-/* #undef HAVE_SYS_BYTESWAP_H */
-
-/* Define to 1 if you have the <sys/endian.h> header file. */
-/* #undef HAVE_SYS_ENDIAN_H */
-
-/* Define to 1 if you have the <sys/mman.h> header file. */
-#define HAVE_SYS_MMAN_H 1
-
-/* Define to 1 if you have the <sys/resource.h> header file. */
-#define HAVE_SYS_RESOURCE_H 1
-
-/* Define to 1 if you have the <sys/stat.h> header file. */
-#define HAVE_SYS_STAT_H 1
-
-/* Define to 1 if you have the <sys/time.h> header file. */
-#define HAVE_SYS_TIME_H 1
-
-/* Define to 1 if you have the <sys/types.h> header file. */
-#define HAVE_SYS_TYPES_H 1
-
-/* Define to 1 if you have the <unistd.h> header file. */
-#define HAVE_UNISTD_H 1
-
-/* Define to 1 if you have the <windows.h> header file. */
-/* #undef HAVE_WINDOWS_H */
-
-/* Define to the sub-directory in which libtool stores uninstalled libraries.
-   */
-#define LT_OBJDIR ".libs/"
-
-/* Name of package */
-#define PACKAGE "snappy"
-
-/* Define to the address where bug reports for this package should be sent. */
-#define PACKAGE_BUGREPORT ""
-
-/* Define to the full name of this package. */
-#define PACKAGE_NAME "snappy"
-
-/* Define to the full name and version of this package. */
-#define PACKAGE_STRING "snappy 1.1.0"
-
-/* Define to the one symbol short name of this package. */
-#define PACKAGE_TARNAME "snappy"
-
-/* Define to the home page for this package. */
-#define PACKAGE_URL ""
-
-/* Define to the version of this package. */
-#define PACKAGE_VERSION "1.1.0"
-
-/* Define to 1 if you have the ANSI C header files. */
-#define STDC_HEADERS 1
-
-/* Version number of package */
-#define VERSION "1.1.0"
-
-/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
-   significant byte first (like Motorola and SPARC, unlike Intel). */
-#if defined AC_APPLE_UNIVERSAL_BUILD
-# if defined __BIG_ENDIAN__
-#  define WORDS_BIGENDIAN 1
-# endif
-#else
-# ifndef WORDS_BIGENDIAN
-/* #  undef WORDS_BIGENDIAN */
-# endif
-#endif
diff --git a/main/snappy/snappy-c.cc b/main/snappy/snappy-c.cc
deleted file mode 100644
index 473a0b09..00000000
--- a/main/snappy/snappy-c.cc
+++ /dev/null
@@ -1,90 +0,0 @@
-// Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "snappy.h"
-#include "snappy-c.h"
-
-extern "C" {
-
-snappy_status snappy_compress(const char* input,
-                              size_t input_length,
-                              char* compressed,
-                              size_t *compressed_length) {
-  if (*compressed_length < snappy_max_compressed_length(input_length)) {
-    return SNAPPY_BUFFER_TOO_SMALL;
-  }
-  snappy::RawCompress(input, input_length, compressed, compressed_length);
-  return SNAPPY_OK;
-}
-
-snappy_status snappy_uncompress(const char* compressed,
-                                size_t compressed_length,
-                                char* uncompressed,
-                                size_t* uncompressed_length) {
-  size_t real_uncompressed_length;
-  if (!snappy::GetUncompressedLength(compressed,
-                                     compressed_length,
-                                     &real_uncompressed_length)) {
-    return SNAPPY_INVALID_INPUT;
-  }
-  if (*uncompressed_length < real_uncompressed_length) {
-    return SNAPPY_BUFFER_TOO_SMALL;
-  }
-  if (!snappy::RawUncompress(compressed, compressed_length, uncompressed)) {
-    return SNAPPY_INVALID_INPUT;
-  }
-  *uncompressed_length = real_uncompressed_length;
-  return SNAPPY_OK;
-}
-
-size_t snappy_max_compressed_length(size_t source_length) {
-  return snappy::MaxCompressedLength(source_length);
-}
-
-snappy_status snappy_uncompressed_length(const char *compressed,
-                                         size_t compressed_length,
-                                         size_t *result) {
-  if (snappy::GetUncompressedLength(compressed,
-                                    compressed_length,
-                                    result)) {
-    return SNAPPY_OK;
-  } else {
-    return SNAPPY_INVALID_INPUT;
-  }
-}
-
-snappy_status snappy_validate_compressed_buffer(const char *compressed,
-                                                size_t compressed_length) {
-  if (snappy::IsValidCompressedBuffer(compressed, compressed_length)) {
-    return SNAPPY_OK;
-  } else {
-    return SNAPPY_INVALID_INPUT;
-  }
-}
-
-}  // extern "C"
diff --git a/main/snappy/snappy-c.h b/main/snappy/snappy-c.h
deleted file mode 100644
index c6c2a860..00000000
--- a/main/snappy/snappy-c.h
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Plain C interface (a wrapper around the C++ implementation).
- */
-
-#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_
-#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stddef.h>
-
-/*
- * Return values; see the documentation for each function to know
- * what each can return.
- */
-typedef enum {
-  SNAPPY_OK = 0,
-  SNAPPY_INVALID_INPUT = 1,
-  SNAPPY_BUFFER_TOO_SMALL = 2
-} snappy_status;
-
-/*
- * Takes the data stored in "input[0..input_length-1]" and stores
- * it in the array pointed to by "compressed".
- *
- * <compressed_length> signals the space available in "compressed".
- * If it is not at least equal to "snappy_max_compressed_length(input_length)",
- * SNAPPY_BUFFER_TOO_SMALL is returned. After successful compression,
- * <compressed_length> contains the true length of the compressed output,
- * and SNAPPY_OK is returned.
- *
- * Example:
- *   size_t output_length = snappy_max_compressed_length(input_length);
- *   char* output = (char*)malloc(output_length);
- *   if (snappy_compress(input, input_length, output, &output_length)
- *       == SNAPPY_OK) {
- *     ... Process(output, output_length) ...
- *   }
- *   free(output);
- */
-snappy_status snappy_compress(const char* input,
-                              size_t input_length,
-                              char* compressed,
-                              size_t* compressed_length);
-
-/*
- * Given data in "compressed[0..compressed_length-1]" generated by
- * calling the snappy_compress routine, this routine stores
- * the uncompressed data to
- *   uncompressed[0..uncompressed_length-1].
- * Returns failure (a value not equal to SNAPPY_OK) if the message
- * is corrupted and could not be decrypted.
- *
- * <uncompressed_length> signals the space available in "uncompressed".
- * If it is not at least equal to the value returned by
- * snappy_uncompressed_length for this stream, SNAPPY_BUFFER_TOO_SMALL
- * is returned. After successful decompression, <uncompressed_length>
- * contains the true length of the decompressed output.
- *
- * Example:
- *   size_t output_length;
- *   if (snappy_uncompressed_length(input, input_length, &output_length)
- *       != SNAPPY_OK) {
- *     ... fail ...
- *   }
- *   char* output = (char*)malloc(output_length);
- *   if (snappy_uncompress(input, input_length, output, &output_length)
- *       == SNAPPY_OK) {
- *     ... Process(output, output_length) ...
- *   }
- *   free(output);
- */
-snappy_status snappy_uncompress(const char* compressed,
-                                size_t compressed_length,
-                                char* uncompressed,
-                                size_t* uncompressed_length);
-
-/*
- * Returns the maximal size of the compressed representation of
- * input data that is "source_length" bytes in length.
- */
-size_t snappy_max_compressed_length(size_t source_length);
-
-/*
- * REQUIRES: "compressed[]" was produced by snappy_compress()
- * Returns SNAPPY_OK and stores the length of the uncompressed data in
- * *result normally. Returns SNAPPY_INVALID_INPUT on parsing error.
- * This operation takes O(1) time.
- */
-snappy_status snappy_uncompressed_length(const char* compressed,
-                                         size_t compressed_length,
-                                         size_t* result);
-
-/*
- * Check if the contents of "compressed[]" can be uncompressed successfully.
- * Does not return the uncompressed data; if so, returns SNAPPY_OK,
- * or if not, returns SNAPPY_INVALID_INPUT.
- * Takes time proportional to compressed_length, but is usually at least a
- * factor of four faster than actual decompression.
- */
-snappy_status snappy_validate_compressed_buffer(const char* compressed,
-                                                size_t compressed_length);
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  /* UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_ */
diff --git a/main/snappy/snappy-internal.h b/main/snappy/snappy-internal.h
deleted file mode 100644
index c99d3313..00000000
--- a/main/snappy/snappy-internal.h
+++ /dev/null
@@ -1,150 +0,0 @@
-// Copyright 2008 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Internals shared between the Snappy implementation and its unittest.
-
-#ifndef UTIL_SNAPPY_SNAPPY_INTERNAL_H_
-#define UTIL_SNAPPY_SNAPPY_INTERNAL_H_
-
-#include "snappy-stubs-internal.h"
-
-namespace snappy {
-namespace internal {
-
-class WorkingMemory {
- public:
-  WorkingMemory() : large_table_(NULL) { }
-  ~WorkingMemory() { delete[] large_table_; }
-
-  // Allocates and clears a hash table using memory in "*this",
-  // stores the number of buckets in "*table_size" and returns a pointer to
-  // the base of the hash table.
-  uint16* GetHashTable(size_t input_size, int* table_size);
-
- private:
-  uint16 small_table_[1<<10];    // 2KB
-  uint16* large_table_;          // Allocated only when needed
-
-  DISALLOW_COPY_AND_ASSIGN(WorkingMemory);
-};
-
-// Flat array compression that does not emit the "uncompressed length"
-// prefix. Compresses "input" string to the "*op" buffer.
-//
-// REQUIRES: "input_length <= kBlockSize"
-// REQUIRES: "op" points to an array of memory that is at least
-// "MaxCompressedLength(input_length)" in size.
-// REQUIRES: All elements in "table[0..table_size-1]" are initialized to zero.
-// REQUIRES: "table_size" is a power of two
-//
-// Returns an "end" pointer into "op" buffer.
-// "end - op" is the compressed size of "input".
-char* CompressFragment(const char* input,
-                       size_t input_length,
-                       char* op,
-                       uint16* table,
-                       const int table_size);
-
-// Return the largest n such that
-//
-//   s1[0,n-1] == s2[0,n-1]
-//   and n <= (s2_limit - s2).
-//
-// Does not read *s2_limit or beyond.
-// Does not read *(s1 + (s2_limit - s2)) or beyond.
-// Requires that s2_limit >= s2.
-//
-// Separate implementation for x86_64, for speed.  Uses the fact that
-// x86_64 is little endian.
-#if defined(ARCH_K8)
-static inline int FindMatchLength(const char* s1,
-                                  const char* s2,
-                                  const char* s2_limit) {
-  assert(s2_limit >= s2);
-  int matched = 0;
-
-  // Find out how long the match is. We loop over the data 64 bits at a
-  // time until we find a 64-bit block that doesn't match; then we find
-  // the first non-matching bit and use that to calculate the total
-  // length of the match.
-  while (PREDICT_TRUE(s2 <= s2_limit - 8)) {
-    if (PREDICT_FALSE(UNALIGNED_LOAD64(s2) == UNALIGNED_LOAD64(s1 + matched))) {
-      s2 += 8;
-      matched += 8;
-    } else {
-      // On current (mid-2008) Opteron models there is a 3% more
-      // efficient code sequence to find the first non-matching byte.
-      // However, what follows is ~10% better on Intel Core 2 and newer,
-      // and we expect AMD's bsf instruction to improve.
-      uint64 x = UNALIGNED_LOAD64(s2) ^ UNALIGNED_LOAD64(s1 + matched);
-      int matching_bits = Bits::FindLSBSetNonZero64(x);
-      matched += matching_bits >> 3;
-      return matched;
-    }
-  }
-  while (PREDICT_TRUE(s2 < s2_limit)) {
-    if (PREDICT_TRUE(s1[matched] == *s2)) {
-      ++s2;
-      ++matched;
-    } else {
-      return matched;
-    }
-  }
-  return matched;
-}
-#else
-static inline int FindMatchLength(const char* s1,
-                                  const char* s2,
-                                  const char* s2_limit) {
-  // Implementation based on the x86-64 version, above.
-  assert(s2_limit >= s2);
-  int matched = 0;
-
-  while (s2 <= s2_limit - 4 &&
-         UNALIGNED_LOAD32(s2) == UNALIGNED_LOAD32(s1 + matched)) {
-    s2 += 4;
-    matched += 4;
-  }
-  if (LittleEndian::IsLittleEndian() && s2 <= s2_limit - 4) {
-    uint32 x = UNALIGNED_LOAD32(s2) ^ UNALIGNED_LOAD32(s1 + matched);
-    int matching_bits = Bits::FindLSBSetNonZero(x);
-    matched += matching_bits >> 3;
-  } else {
-    while ((s2 < s2_limit) && (s1[matched] == *s2)) {
-      ++s2;
-      ++matched;
-    }
-  }
-  return matched;
-}
-#endif
-
-}  // end namespace internal
-}  // end namespace snappy
-
-#endif  // UTIL_SNAPPY_SNAPPY_INTERNAL_H_
diff --git a/main/snappy/snappy-sinksource.cc b/main/snappy/snappy-sinksource.cc
deleted file mode 100644
index 5844552c..00000000
--- a/main/snappy/snappy-sinksource.cc
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <string.h>
-
-#include "snappy-sinksource.h"
-
-namespace snappy {
-
-Source::~Source() { }
-
-Sink::~Sink() { }
-
-char* Sink::GetAppendBuffer(size_t length, char* scratch) {
-  return scratch;
-}
-
-ByteArraySource::~ByteArraySource() { }
-
-size_t ByteArraySource::Available() const { return left_; }
-
-const char* ByteArraySource::Peek(size_t* len) {
-  *len = left_;
-  return ptr_;
-}
-
-void ByteArraySource::Skip(size_t n) {
-  left_ -= n;
-  ptr_ += n;
-}
-
-UncheckedByteArraySink::~UncheckedByteArraySink() { }
-
-void UncheckedByteArraySink::Append(const char* data, size_t n) {
-  // Do no copying if the caller filled in the result of GetAppendBuffer()
-  if (data != dest_) {
-    memcpy(dest_, data, n);
-  }
-  dest_ += n;
-}
-
-char* UncheckedByteArraySink::GetAppendBuffer(size_t len, char* scratch) {
-  return dest_;
-}
-
-}
diff --git a/main/snappy/snappy-sinksource.h b/main/snappy/snappy-sinksource.h
deleted file mode 100644
index faabfa1e..00000000
--- a/main/snappy/snappy-sinksource.h
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef UTIL_SNAPPY_SNAPPY_SINKSOURCE_H_
-#define UTIL_SNAPPY_SNAPPY_SINKSOURCE_H_
-
-#include <stddef.h>
-
-
-namespace snappy {
-
-// A Sink is an interface that consumes a sequence of bytes.
-class Sink {
- public:
-  Sink() { }
-  virtual ~Sink();
-
-  // Append "bytes[0,n-1]" to this.
-  virtual void Append(const char* bytes, size_t n) = 0;
-
-  // Returns a writable buffer of the specified length for appending.
-  // May return a pointer to the caller-owned scratch buffer which
-  // must have at least the indicated length.  The returned buffer is
-  // only valid until the next operation on this Sink.
-  //
-  // After writing at most "length" bytes, call Append() with the
-  // pointer returned from this function and the number of bytes
-  // written.  Many Append() implementations will avoid copying
-  // bytes if this function returned an internal buffer.
-  //
-  // If a non-scratch buffer is returned, the caller may only pass a
-  // prefix of it to Append().  That is, it is not correct to pass an
-  // interior pointer of the returned array to Append().
-  //
-  // The default implementation always returns the scratch buffer.
-  virtual char* GetAppendBuffer(size_t length, char* scratch);
-
-
- private:
-  // No copying
-  Sink(const Sink&);
-  void operator=(const Sink&);
-};
-
-// A Source is an interface that yields a sequence of bytes
-class Source {
- public:
-  Source() { }
-  virtual ~Source();
-
-  // Return the number of bytes left to read from the source
-  virtual size_t Available() const = 0;
-
-  // Peek at the next flat region of the source.  Does not reposition
-  // the source.  The returned region is empty iff Available()==0.
-  //
-  // Returns a pointer to the beginning of the region and store its
-  // length in *len.
-  //
-  // The returned region is valid until the next call to Skip() or
-  // until this object is destroyed, whichever occurs first.
-  //
-  // The returned region may be larger than Available() (for example
-  // if this ByteSource is a view on a substring of a larger source).
-  // The caller is responsible for ensuring that it only reads the
-  // Available() bytes.
-  virtual const char* Peek(size_t* len) = 0;
-
-  // Skip the next n bytes.  Invalidates any buffer returned by
-  // a previous call to Peek().
-  // REQUIRES: Available() >= n
-  virtual void Skip(size_t n) = 0;
-
- private:
-  // No copying
-  Source(const Source&);
-  void operator=(const Source&);
-};
-
-// A Source implementation that yields the contents of a flat array
-class ByteArraySource : public Source {
- public:
-  ByteArraySource(const char* p, size_t n) : ptr_(p), left_(n) { }
-  virtual ~ByteArraySource();
-  virtual size_t Available() const;
-  virtual const char* Peek(size_t* len);
-  virtual void Skip(size_t n);
- private:
-  const char* ptr_;
-  size_t left_;
-};
-
-// A Sink implementation that writes to a flat array without any bound checks.
-class UncheckedByteArraySink : public Sink {
- public:
-  explicit UncheckedByteArraySink(char* dest) : dest_(dest) { }
-  virtual ~UncheckedByteArraySink();
-  virtual void Append(const char* data, size_t n);
-  virtual char* GetAppendBuffer(size_t len, char* scratch);
-
-  // Return the current output pointer so that a caller can see how
-  // many bytes were produced.
-  // Note: this is not a Sink method.
-  char* CurrentDestination() const { return dest_; }
- private:
-  char* dest_;
-};
-
-
-}
-
-#endif  // UTIL_SNAPPY_SNAPPY_SINKSOURCE_H_
diff --git a/main/snappy/snappy-stubs-internal.cc b/main/snappy/snappy-stubs-internal.cc
deleted file mode 100644
index 6ed33437..00000000
--- a/main/snappy/snappy-stubs-internal.cc
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <algorithm>
-#include <string>
-
-#include "snappy-stubs-internal.h"
-
-namespace snappy {
-
-void Varint::Append32(string* s, uint32 value) {
-  char buf[Varint::kMax32];
-  const char* p = Varint::Encode32(buf, value);
-  s->append(buf, p - buf);
-}
-
-}  // namespace snappy
diff --git a/main/snappy/snappy-stubs-internal.h b/main/snappy/snappy-stubs-internal.h
deleted file mode 100644
index 12393b62..00000000
--- a/main/snappy/snappy-stubs-internal.h
+++ /dev/null
@@ -1,491 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Various stubs for the open-source version of Snappy.
-
-#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_
-#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string>
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#endif
-
-#include "snappy-stubs-public.h"
-
-#if defined(__x86_64__)
-
-// Enable 64-bit optimized versions of some routines.
-#define ARCH_K8 1
-
-#endif
-
-// Needed by OS X, among others.
-#ifndef MAP_ANONYMOUS
-#define MAP_ANONYMOUS MAP_ANON
-#endif
-
-// Pull in std::min, std::ostream, and the likes. This is safe because this
-// header file is never used from any public header files.
-using namespace std;
-
-// The size of an array, if known at compile-time.
-// Will give unexpected results if used on a pointer.
-// We undefine it first, since some compilers already have a definition.
-#ifdef ARRAYSIZE
-#undef ARRAYSIZE
-#endif
-#define ARRAYSIZE(a) (sizeof(a) / sizeof(*(a)))
-
-// Static prediction hints.
-#ifdef HAVE_BUILTIN_EXPECT
-#define PREDICT_FALSE(x) (__builtin_expect(x, 0))
-#define PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
-#else
-#define PREDICT_FALSE(x) x
-#define PREDICT_TRUE(x) x
-#endif
-
-// This is only used for recomputing the tag byte table used during
-// decompression; for simplicity we just remove it from the open-source
-// version (anyone who wants to regenerate it can just do the call
-// themselves within main()).
-#define DEFINE_bool(flag_name, default_value, description) \
-  bool FLAGS_ ## flag_name = default_value
-#define DECLARE_bool(flag_name) \
-  extern bool FLAGS_ ## flag_name
-
-namespace snappy {
-
-static const uint32 kuint32max = static_cast<uint32>(0xFFFFFFFF);
-static const int64 kint64max = static_cast<int64>(0x7FFFFFFFFFFFFFFFLL);
-
-// Potentially unaligned loads and stores.
-
-// x86 and PowerPC can simply do these loads and stores native.
-
-#if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__)
-
-#define UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p))
-#define UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p))
-#define UNALIGNED_LOAD64(_p) (*reinterpret_cast<const uint64 *>(_p))
-
-#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val))
-#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val))
-#define UNALIGNED_STORE64(_p, _val) (*reinterpret_cast<uint64 *>(_p) = (_val))
-
-// ARMv7 and newer support native unaligned accesses, but only of 16-bit
-// and 32-bit values (not 64-bit); older versions either raise a fatal signal,
-// do an unaligned read and rotate the words around a bit, or do the reads very
-// slowly (trip through kernel mode). There's no simple #define that says just
-// “ARMv7 or higher”, so we have to filter away all ARMv5 and ARMv6
-// sub-architectures.
-//
-// This is a mess, but there's not much we can do about it.
-
-#elif defined(__arm__) && \
-      !defined(__ARM_ARCH_4__) && \
-      !defined(__ARM_ARCH_4T__) && \
-      !defined(__ARM_ARCH_5__) && \
-      !defined(__ARM_ARCH_5T__) && \
-      !defined(__ARM_ARCH_5TE__) && \
-      !defined(__ARM_ARCH_5TEJ__) && \
-      !defined(__ARM_ARCH_6__) && \
-      !defined(__ARM_ARCH_6J__) && \
-      !defined(__ARM_ARCH_6K__) && \
-      !defined(__ARM_ARCH_6Z__) && \
-      !defined(__ARM_ARCH_6ZK__) && \
-      !defined(__ARM_ARCH_6T2__)
-
-#define UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p))
-#define UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p))
-
-#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val))
-#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val))
-
-// TODO(user): NEON supports unaligned 64-bit loads and stores.
-// See if that would be more efficient on platforms supporting it,
-// at least for copies.
-
-inline uint64 UNALIGNED_LOAD64(const void *p) {
-  uint64 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline void UNALIGNED_STORE64(void *p, uint64 v) {
-  memcpy(p, &v, sizeof v);
-}
-
-#else
-
-// These functions are provided for architectures that don't support
-// unaligned loads and stores.
-
-inline uint16 UNALIGNED_LOAD16(const void *p) {
-  uint16 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline uint32 UNALIGNED_LOAD32(const void *p) {
-  uint32 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline uint64 UNALIGNED_LOAD64(const void *p) {
-  uint64 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline void UNALIGNED_STORE16(void *p, uint16 v) {
-  memcpy(p, &v, sizeof v);
-}
-
-inline void UNALIGNED_STORE32(void *p, uint32 v) {
-  memcpy(p, &v, sizeof v);
-}
-
-inline void UNALIGNED_STORE64(void *p, uint64 v) {
-  memcpy(p, &v, sizeof v);
-}
-
-#endif
-
-// This can be more efficient than UNALIGNED_LOAD64 + UNALIGNED_STORE64
-// on some platforms, in particular ARM.
-inline void UnalignedCopy64(const void *src, void *dst) {
-  if (sizeof(void *) == 8) {
-    UNALIGNED_STORE64(dst, UNALIGNED_LOAD64(src));
-  } else {
-    const char *src_char = reinterpret_cast<const char *>(src);
-    char *dst_char = reinterpret_cast<char *>(dst);
-
-    UNALIGNED_STORE32(dst_char, UNALIGNED_LOAD32(src_char));
-    UNALIGNED_STORE32(dst_char + 4, UNALIGNED_LOAD32(src_char + 4));
-  }
-}
-
-// The following guarantees declaration of the byte swap functions.
-#ifdef WORDS_BIGENDIAN
-
-#ifdef HAVE_SYS_BYTEORDER_H
-#include <sys/byteorder.h>
-#endif
-
-#ifdef HAVE_SYS_ENDIAN_H
-#include <sys/endian.h>
-#endif
-
-#ifdef _MSC_VER
-#include <stdlib.h>
-#define bswap_16(x) _byteswap_ushort(x)
-#define bswap_32(x) _byteswap_ulong(x)
-#define bswap_64(x) _byteswap_uint64(x)
-
-#elif defined(__APPLE__)
-// Mac OS X / Darwin features
-#include <libkern/OSByteOrder.h>
-#define bswap_16(x) OSSwapInt16(x)
-#define bswap_32(x) OSSwapInt32(x)
-#define bswap_64(x) OSSwapInt64(x)
-
-#elif defined(HAVE_BYTESWAP_H)
-#include <byteswap.h>
-
-#elif defined(bswap32)
-// FreeBSD defines bswap{16,32,64} in <sys/endian.h> (already #included).
-#define bswap_16(x) bswap16(x)
-#define bswap_32(x) bswap32(x)
-#define bswap_64(x) bswap64(x)
-
-#elif defined(BSWAP_64)
-// Solaris 10 defines BSWAP_{16,32,64} in <sys/byteorder.h> (already #included).
-#define bswap_16(x) BSWAP_16(x)
-#define bswap_32(x) BSWAP_32(x)
-#define bswap_64(x) BSWAP_64(x)
-
-#else
-
-inline uint16 bswap_16(uint16 x) {
-  return (x << 8) | (x >> 8);
-}
-
-inline uint32 bswap_32(uint32 x) {
-  x = ((x & 0xff00ff00UL) >> 8) | ((x & 0x00ff00ffUL) << 8);
-  return (x >> 16) | (x << 16);
-}
-
-inline uint64 bswap_64(uint64 x) {
-  x = ((x & 0xff00ff00ff00ff00ULL) >> 8) | ((x & 0x00ff00ff00ff00ffULL) << 8);
-  x = ((x & 0xffff0000ffff0000ULL) >> 16) | ((x & 0x0000ffff0000ffffULL) << 16);
-  return (x >> 32) | (x << 32);
-}
-
-#endif
-
-#endif  // WORDS_BIGENDIAN
-
-// Convert to little-endian storage, opposite of network format.
-// Convert x from host to little endian: x = LittleEndian.FromHost(x);
-// convert x from little endian to host: x = LittleEndian.ToHost(x);
-//
-//  Store values into unaligned memory converting to little endian order:
-//    LittleEndian.Store16(p, x);
-//
-//  Load unaligned values stored in little endian converting to host order:
-//    x = LittleEndian.Load16(p);
-class LittleEndian {
- public:
-  // Conversion functions.
-#ifdef WORDS_BIGENDIAN
-
-  static uint16 FromHost16(uint16 x) { return bswap_16(x); }
-  static uint16 ToHost16(uint16 x) { return bswap_16(x); }
-
-  static uint32 FromHost32(uint32 x) { return bswap_32(x); }
-  static uint32 ToHost32(uint32 x) { return bswap_32(x); }
-
-  static bool IsLittleEndian() { return false; }
-
-#else  // !defined(WORDS_BIGENDIAN)
-
-  static uint16 FromHost16(uint16 x) { return x; }
-  static uint16 ToHost16(uint16 x) { return x; }
-
-  static uint32 FromHost32(uint32 x) { return x; }
-  static uint32 ToHost32(uint32 x) { return x; }
-
-  static bool IsLittleEndian() { return true; }
-
-#endif  // !defined(WORDS_BIGENDIAN)
-
-  // Functions to do unaligned loads and stores in little-endian order.
-  static uint16 Load16(const void *p) {
-    return ToHost16(UNALIGNED_LOAD16(p));
-  }
-
-  static void Store16(void *p, uint16 v) {
-    UNALIGNED_STORE16(p, FromHost16(v));
-  }
-
-  static uint32 Load32(const void *p) {
-    return ToHost32(UNALIGNED_LOAD32(p));
-  }
-
-  static void Store32(void *p, uint32 v) {
-    UNALIGNED_STORE32(p, FromHost32(v));
-  }
-};
-
-// Some bit-manipulation functions.
-class Bits {
- public:
-  // Return floor(log2(n)) for positive integer n.  Returns -1 iff n == 0.
-  static int Log2Floor(uint32 n);
-
-  // Return the first set least / most significant bit, 0-indexed.  Returns an
-  // undefined value if n == 0.  FindLSBSetNonZero() is similar to ffs() except
-  // that it's 0-indexed.
-  static int FindLSBSetNonZero(uint32 n);
-  static int FindLSBSetNonZero64(uint64 n);
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(Bits);
-};
-
-#ifdef HAVE_BUILTIN_CTZ
-
-inline int Bits::Log2Floor(uint32 n) {
-  return n == 0 ? -1 : 31 ^ __builtin_clz(n);
-}
-
-inline int Bits::FindLSBSetNonZero(uint32 n) {
-  return __builtin_ctz(n);
-}
-
-inline int Bits::FindLSBSetNonZero64(uint64 n) {
-  return __builtin_ctzll(n);
-}
-
-#else  // Portable versions.
-
-inline int Bits::Log2Floor(uint32 n) {
-  if (n == 0)
-    return -1;
-  int log = 0;
-  uint32 value = n;
-  for (int i = 4; i >= 0; --i) {
-    int shift = (1 << i);
-    uint32 x = value >> shift;
-    if (x != 0) {
-      value = x;
-      log += shift;
-    }
-  }
-  assert(value == 1);
-  return log;
-}
-
-inline int Bits::FindLSBSetNonZero(uint32 n) {
-  int rc = 31;
-  for (int i = 4, shift = 1 << 4; i >= 0; --i) {
-    const uint32 x = n << shift;
-    if (x != 0) {
-      n = x;
-      rc -= shift;
-    }
-    shift >>= 1;
-  }
-  return rc;
-}
-
-// FindLSBSetNonZero64() is defined in terms of FindLSBSetNonZero().
-inline int Bits::FindLSBSetNonZero64(uint64 n) {
-  const uint32 bottombits = static_cast<uint32>(n);
-  if (bottombits == 0) {
-    // Bottom bits are zero, so scan in top bits
-    return 32 + FindLSBSetNonZero(static_cast<uint32>(n >> 32));
-  } else {
-    return FindLSBSetNonZero(bottombits);
-  }
-}
-
-#endif  // End portable versions.
-
-// Variable-length integer encoding.
-class Varint {
- public:
-  // Maximum lengths of varint encoding of uint32.
-  static const int kMax32 = 5;
-
-  // Attempts to parse a varint32 from a prefix of the bytes in [ptr,limit-1].
-  // Never reads a character at or beyond limit.  If a valid/terminated varint32
-  // was found in the range, stores it in *OUTPUT and returns a pointer just
-  // past the last byte of the varint32. Else returns NULL.  On success,
-  // "result <= limit".
-  static const char* Parse32WithLimit(const char* ptr, const char* limit,
-                                      uint32* OUTPUT);
-
-  // REQUIRES   "ptr" points to a buffer of length sufficient to hold "v".
-  // EFFECTS    Encodes "v" into "ptr" and returns a pointer to the
-  //            byte just past the last encoded byte.
-  static char* Encode32(char* ptr, uint32 v);
-
-  // EFFECTS    Appends the varint representation of "value" to "*s".
-  static void Append32(string* s, uint32 value);
-};
-
-inline const char* Varint::Parse32WithLimit(const char* p,
-                                            const char* l,
-                                            uint32* OUTPUT) {
-  const unsigned char* ptr = reinterpret_cast<const unsigned char*>(p);
-  const unsigned char* limit = reinterpret_cast<const unsigned char*>(l);
-  uint32 b, result;
-  if (ptr >= limit) return NULL;
-  b = *(ptr++); result = b & 127;          if (b < 128) goto done;
-  if (ptr >= limit) return NULL;
-  b = *(ptr++); result |= (b & 127) <<  7; if (b < 128) goto done;
-  if (ptr >= limit) return NULL;
-  b = *(ptr++); result |= (b & 127) << 14; if (b < 128) goto done;
-  if (ptr >= limit) return NULL;
-  b = *(ptr++); result |= (b & 127) << 21; if (b < 128) goto done;
-  if (ptr >= limit) return NULL;
-  b = *(ptr++); result |= (b & 127) << 28; if (b < 16) goto done;
-  return NULL;       // Value is too long to be a varint32
- done:
-  *OUTPUT = result;
-  return reinterpret_cast<const char*>(ptr);
-}
-
-inline char* Varint::Encode32(char* sptr, uint32 v) {
-  // Operate on characters as unsigneds
-  unsigned char* ptr = reinterpret_cast<unsigned char*>(sptr);
-  static const int B = 128;
-  if (v < (1<<7)) {
-    *(ptr++) = v;
-  } else if (v < (1<<14)) {
-    *(ptr++) = v | B;
-    *(ptr++) = v>>7;
-  } else if (v < (1<<21)) {
-    *(ptr++) = v | B;
-    *(ptr++) = (v>>7) | B;
-    *(ptr++) = v>>14;
-  } else if (v < (1<<28)) {
-    *(ptr++) = v | B;
-    *(ptr++) = (v>>7) | B;
-    *(ptr++) = (v>>14) | B;
-    *(ptr++) = v>>21;
-  } else {
-    *(ptr++) = v | B;
-    *(ptr++) = (v>>7) | B;
-    *(ptr++) = (v>>14) | B;
-    *(ptr++) = (v>>21) | B;
-    *(ptr++) = v>>28;
-  }
-  return reinterpret_cast<char*>(ptr);
-}
-
-// If you know the internal layout of the std::string in use, you can
-// replace this function with one that resizes the string without
-// filling the new space with zeros (if applicable) --
-// it will be non-portable but faster.
-inline void STLStringResizeUninitialized(string* s, size_t new_size) {
-  s->resize(new_size);
-}
-
-// Return a mutable char* pointing to a string's internal buffer,
-// which may not be null-terminated. Writing through this pointer will
-// modify the string.
-//
-// string_as_array(&str)[i] is valid for 0 <= i < str.size() until the
-// next call to a string method that invalidates iterators.
-//
-// As of 2006-04, there is no standard-blessed way of getting a
-// mutable reference to a string's internal buffer. However, issue 530
-// (http://www.open-std.org/JTC1/SC22/WG21/docs/lwg-defects.html#530)
-// proposes this as the method. It will officially be part of the standard
-// for C++0x. This should already work on all current implementations.
-inline char* string_as_array(string* str) {
-  return str->empty() ? NULL : &*str->begin();
-}
-
-}  // namespace snappy
-
-#endif  // UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_
diff --git a/main/snappy/snappy-stubs-public.h b/main/snappy/snappy-stubs-public.h
deleted file mode 100644
index 96d88650..00000000
--- a/main/snappy/snappy-stubs-public.h
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-// Author: sesse@google.com (Steinar H. Gunderson)
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Various type stubs for the open-source version of Snappy.
-//
-// This file cannot include config.h, as it is included from snappy.h,
-// which is a public header. Instead, snappy-stubs-public.h is generated by
-// from snappy-stubs-public.h.in at configure time.
-
-#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
-#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
-
-#if 1
-#include <stdint.h>
-#endif
-
-#if 1
-#include <stddef.h>
-#endif
-
-#define SNAPPY_MAJOR 1
-#define SNAPPY_MINOR 1
-#define SNAPPY_PATCHLEVEL 0
-#define SNAPPY_VERSION \
-    ((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
-
-#include <string>
-
-namespace snappy {
-
-#if 1
-typedef int8_t int8;
-typedef uint8_t uint8;
-typedef int16_t int16;
-typedef uint16_t uint16;
-typedef int32_t int32;
-typedef uint32_t uint32;
-typedef int64_t int64;
-typedef uint64_t uint64;
-#else
-typedef signed char int8;
-typedef unsigned char uint8;
-typedef short int16;
-typedef unsigned short uint16;
-typedef int int32;
-typedef unsigned int uint32;
-typedef long long int64;
-typedef unsigned long long uint64;
-#endif
-
-typedef std::string string;
-
-#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
-  TypeName(const TypeName&);               \
-  void operator=(const TypeName&)
-
-}  // namespace snappy
-
-#endif  // UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
diff --git a/main/snappy/snappy-stubs-public.h.in b/main/snappy/snappy-stubs-public.h.in
deleted file mode 100644
index f0babcbe..00000000
--- a/main/snappy/snappy-stubs-public.h.in
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-// Author: sesse@google.com (Steinar H. Gunderson)
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Various type stubs for the open-source version of Snappy.
-//
-// This file cannot include config.h, as it is included from snappy.h,
-// which is a public header. Instead, snappy-stubs-public.h is generated by
-// from snappy-stubs-public.h.in at configure time.
-
-#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
-#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
-
-#if @ac_cv_have_stdint_h@
-#include <stdint.h>
-#endif
-
-#if @ac_cv_have_stddef_h@
-#include <stddef.h>
-#endif
-
-#define SNAPPY_MAJOR @SNAPPY_MAJOR@
-#define SNAPPY_MINOR @SNAPPY_MINOR@
-#define SNAPPY_PATCHLEVEL @SNAPPY_PATCHLEVEL@
-#define SNAPPY_VERSION \
-    ((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
-
-#include <string>
-
-namespace snappy {
-
-#if @ac_cv_have_stdint_h@
-typedef int8_t int8;
-typedef uint8_t uint8;
-typedef int16_t int16;
-typedef uint16_t uint16;
-typedef int32_t int32;
-typedef uint32_t uint32;
-typedef int64_t int64;
-typedef uint64_t uint64;
-#else
-typedef signed char int8;
-typedef unsigned char uint8;
-typedef short int16;
-typedef unsigned short uint16;
-typedef int int32;
-typedef unsigned int uint32;
-typedef long long int64;
-typedef unsigned long long uint64;
-#endif
-
-typedef std::string string;
-
-#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
-  TypeName(const TypeName&);               \
-  void operator=(const TypeName&)
-
-}  // namespace snappy
-
-#endif  // UTIL_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
diff --git a/main/snappy/snappy-test.cc b/main/snappy/snappy-test.cc
deleted file mode 100644
index 46194109..00000000
--- a/main/snappy/snappy-test.cc
+++ /dev/null
@@ -1,606 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Various stubs for the unit tests for the open-source version of Snappy.
-
-#include "snappy-test.h"
-
-#ifdef HAVE_WINDOWS_H
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#endif
-
-#include <algorithm>
-
-DEFINE_bool(run_microbenchmarks, true,
-            "Run microbenchmarks before doing anything else.");
-
-namespace snappy {
-
-string ReadTestDataFile(const string& base, size_t size_limit) {
-  string contents;
-  const char* srcdir = getenv("srcdir");  // This is set by Automake.
-  string prefix;
-  if (srcdir) {
-    prefix = string(srcdir) + "/";
-  }
-  file::GetContents(prefix + "testdata/" + base, &contents, file::Defaults()
-      ).CheckSuccess();
-  if (size_limit > 0) {
-    contents = contents.substr(0, size_limit);
-  }
-  return contents;
-}
-
-string ReadTestDataFile(const string& base) {
-  return ReadTestDataFile(base, 0);
-}
-
-string StringPrintf(const char* format, ...) {
-  char buf[4096];
-  va_list ap;
-  va_start(ap, format);
-  vsnprintf(buf, sizeof(buf), format, ap);
-  va_end(ap);
-  return buf;
-}
-
-bool benchmark_running = false;
-int64 benchmark_real_time_us = 0;
-int64 benchmark_cpu_time_us = 0;
-string *benchmark_label = NULL;
-int64 benchmark_bytes_processed = 0;
-
-void ResetBenchmarkTiming() {
-  benchmark_real_time_us = 0;
-  benchmark_cpu_time_us = 0;
-}
-
-#ifdef WIN32
-LARGE_INTEGER benchmark_start_real;
-FILETIME benchmark_start_cpu;
-#else  // WIN32
-struct timeval benchmark_start_real;
-struct rusage benchmark_start_cpu;
-#endif  // WIN32
-
-void StartBenchmarkTiming() {
-#ifdef WIN32
-  QueryPerformanceCounter(&benchmark_start_real);
-  FILETIME dummy;
-  CHECK(GetProcessTimes(
-      GetCurrentProcess(), &dummy, &dummy, &dummy, &benchmark_start_cpu));
-#else
-  gettimeofday(&benchmark_start_real, NULL);
-  if (getrusage(RUSAGE_SELF, &benchmark_start_cpu) == -1) {
-    perror("getrusage(RUSAGE_SELF)");
-    exit(1);
-  }
-#endif
-  benchmark_running = true;
-}
-
-void StopBenchmarkTiming() {
-  if (!benchmark_running) {
-    return;
-  }
-
-#ifdef WIN32
-  LARGE_INTEGER benchmark_stop_real;
-  LARGE_INTEGER benchmark_frequency;
-  QueryPerformanceCounter(&benchmark_stop_real);
-  QueryPerformanceFrequency(&benchmark_frequency);
-
-  double elapsed_real = static_cast<double>(
-      benchmark_stop_real.QuadPart - benchmark_start_real.QuadPart) /
-      benchmark_frequency.QuadPart;
-  benchmark_real_time_us += elapsed_real * 1e6 + 0.5;
-
-  FILETIME benchmark_stop_cpu, dummy;
-  CHECK(GetProcessTimes(
-      GetCurrentProcess(), &dummy, &dummy, &dummy, &benchmark_stop_cpu));
-
-  ULARGE_INTEGER start_ulargeint;
-  start_ulargeint.LowPart = benchmark_start_cpu.dwLowDateTime;
-  start_ulargeint.HighPart = benchmark_start_cpu.dwHighDateTime;
-
-  ULARGE_INTEGER stop_ulargeint;
-  stop_ulargeint.LowPart = benchmark_stop_cpu.dwLowDateTime;
-  stop_ulargeint.HighPart = benchmark_stop_cpu.dwHighDateTime;
-
-  benchmark_cpu_time_us +=
-      (stop_ulargeint.QuadPart - start_ulargeint.QuadPart + 5) / 10;
-#else  // WIN32
-  struct timeval benchmark_stop_real;
-  gettimeofday(&benchmark_stop_real, NULL);
-  benchmark_real_time_us +=
-      1000000 * (benchmark_stop_real.tv_sec - benchmark_start_real.tv_sec);
-  benchmark_real_time_us +=
-      (benchmark_stop_real.tv_usec - benchmark_start_real.tv_usec);
-
-  struct rusage benchmark_stop_cpu;
-  if (getrusage(RUSAGE_SELF, &benchmark_stop_cpu) == -1) {
-    perror("getrusage(RUSAGE_SELF)");
-    exit(1);
-  }
-  benchmark_cpu_time_us += 1000000 * (benchmark_stop_cpu.ru_utime.tv_sec -
-                                      benchmark_start_cpu.ru_utime.tv_sec);
-  benchmark_cpu_time_us += (benchmark_stop_cpu.ru_utime.tv_usec -
-                            benchmark_start_cpu.ru_utime.tv_usec);
-#endif  // WIN32
-
-  benchmark_running = false;
-}
-
-void SetBenchmarkLabel(const string& str) {
-  if (benchmark_label) {
-    delete benchmark_label;
-  }
-  benchmark_label = new string(str);
-}
-
-void SetBenchmarkBytesProcessed(int64 bytes) {
-  benchmark_bytes_processed = bytes;
-}
-
-struct BenchmarkRun {
-  int64 real_time_us;
-  int64 cpu_time_us;
-};
-
-struct BenchmarkCompareCPUTime {
-  bool operator() (const BenchmarkRun& a, const BenchmarkRun& b) const {
-    return a.cpu_time_us < b.cpu_time_us;
-  }
-};
-
-void Benchmark::Run() {
-  for (int test_case_num = start_; test_case_num <= stop_; ++test_case_num) {
-    // Run a few iterations first to find out approximately how fast
-    // the benchmark is.
-    const int kCalibrateIterations = 100;
-    ResetBenchmarkTiming();
-    StartBenchmarkTiming();
-    (*function_)(kCalibrateIterations, test_case_num);
-    StopBenchmarkTiming();
-
-    // Let each test case run for about 200ms, but at least as many
-    // as we used to calibrate.
-    // Run five times and pick the median.
-    const int kNumRuns = 5;
-    const int kMedianPos = kNumRuns / 2;
-    int num_iterations = 0;
-    if (benchmark_real_time_us > 0) {
-      num_iterations = 200000 * kCalibrateIterations / benchmark_real_time_us;
-    }
-    num_iterations = max(num_iterations, kCalibrateIterations);
-    BenchmarkRun benchmark_runs[kNumRuns];
-
-    for (int run = 0; run < kNumRuns; ++run) {
-      ResetBenchmarkTiming();
-      StartBenchmarkTiming();
-      (*function_)(num_iterations, test_case_num);
-      StopBenchmarkTiming();
-
-      benchmark_runs[run].real_time_us = benchmark_real_time_us;
-      benchmark_runs[run].cpu_time_us = benchmark_cpu_time_us;
-    }
-
-    string heading = StringPrintf("%s/%d", name_.c_str(), test_case_num);
-    string human_readable_speed;
-
-    nth_element(benchmark_runs,
-                benchmark_runs + kMedianPos,
-                benchmark_runs + kNumRuns,
-                BenchmarkCompareCPUTime());
-    int64 real_time_us = benchmark_runs[kMedianPos].real_time_us;
-    int64 cpu_time_us = benchmark_runs[kMedianPos].cpu_time_us;
-    if (cpu_time_us <= 0) {
-      human_readable_speed = "?";
-    } else {
-      int64 bytes_per_second =
-          benchmark_bytes_processed * 1000000 / cpu_time_us;
-      if (bytes_per_second < 1024) {
-        human_readable_speed = StringPrintf("%dB/s", bytes_per_second);
-      } else if (bytes_per_second < 1024 * 1024) {
-        human_readable_speed = StringPrintf(
-            "%.1fkB/s", bytes_per_second / 1024.0f);
-      } else if (bytes_per_second < 1024 * 1024 * 1024) {
-        human_readable_speed = StringPrintf(
-            "%.1fMB/s", bytes_per_second / (1024.0f * 1024.0f));
-      } else {
-        human_readable_speed = StringPrintf(
-            "%.1fGB/s", bytes_per_second / (1024.0f * 1024.0f * 1024.0f));
-      }
-    }
-
-    fprintf(stderr,
-#ifdef WIN32
-            "%-18s %10I64d %10I64d %10d %s  %s\n",
-#else
-            "%-18s %10lld %10lld %10d %s  %s\n",
-#endif
-            heading.c_str(),
-            static_cast<long long>(real_time_us * 1000 / num_iterations),
-            static_cast<long long>(cpu_time_us * 1000 / num_iterations),
-            num_iterations,
-            human_readable_speed.c_str(),
-            benchmark_label->c_str());
-  }
-}
-
-#ifdef HAVE_LIBZ
-
-ZLib::ZLib()
-    : comp_init_(false),
-      uncomp_init_(false) {
-  Reinit();
-}
-
-ZLib::~ZLib() {
-  if (comp_init_)   { deflateEnd(&comp_stream_); }
-  if (uncomp_init_) { inflateEnd(&uncomp_stream_); }
-}
-
-void ZLib::Reinit() {
-  compression_level_ = Z_DEFAULT_COMPRESSION;
-  window_bits_ = MAX_WBITS;
-  mem_level_ =  8;  // DEF_MEM_LEVEL
-  if (comp_init_) {
-    deflateEnd(&comp_stream_);
-    comp_init_ = false;
-  }
-  if (uncomp_init_) {
-    inflateEnd(&uncomp_stream_);
-    uncomp_init_ = false;
-  }
-  first_chunk_ = true;
-}
-
-void ZLib::Reset() {
-  first_chunk_ = true;
-}
-
-// --------- COMPRESS MODE
-
-// Initialization method to be called if we hit an error while
-// compressing. On hitting an error, call this method before returning
-// the error.
-void ZLib::CompressErrorInit() {
-  deflateEnd(&comp_stream_);
-  comp_init_ = false;
-  Reset();
-}
-
-int ZLib::DeflateInit() {
-  return deflateInit2(&comp_stream_,
-                      compression_level_,
-                      Z_DEFLATED,
-                      window_bits_,
-                      mem_level_,
-                      Z_DEFAULT_STRATEGY);
-}
-
-int ZLib::CompressInit(Bytef *dest, uLongf *destLen,
-                       const Bytef *source, uLong *sourceLen) {
-  int err;
-
-  comp_stream_.next_in = (Bytef*)source;
-  comp_stream_.avail_in = (uInt)*sourceLen;
-  if ((uLong)comp_stream_.avail_in != *sourceLen) return Z_BUF_ERROR;
-  comp_stream_.next_out = dest;
-  comp_stream_.avail_out = (uInt)*destLen;
-  if ((uLong)comp_stream_.avail_out != *destLen) return Z_BUF_ERROR;
-
-  if ( !first_chunk_ )   // only need to set up stream the first time through
-    return Z_OK;
-
-  if (comp_init_) {      // we've already initted it
-    err = deflateReset(&comp_stream_);
-    if (err != Z_OK) {
-      LOG(WARNING) << "ERROR: Can't reset compress object; creating a new one";
-      deflateEnd(&comp_stream_);
-      comp_init_ = false;
-    }
-  }
-  if (!comp_init_) {     // first use
-    comp_stream_.zalloc = (alloc_func)0;
-    comp_stream_.zfree = (free_func)0;
-    comp_stream_.opaque = (voidpf)0;
-    err = DeflateInit();
-    if (err != Z_OK) return err;
-    comp_init_ = true;
-  }
-  return Z_OK;
-}
-
-// In a perfect world we'd always have the full buffer to compress
-// when the time came, and we could just call Compress().  Alas, we
-// want to do chunked compression on our webserver.  In this
-// application, we compress the header, send it off, then compress the
-// results, send them off, then compress the footer.  Thus we need to
-// use the chunked compression features of zlib.
-int ZLib::CompressAtMostOrAll(Bytef *dest, uLongf *destLen,
-                              const Bytef *source, uLong *sourceLen,
-                              int flush_mode) {   // Z_FULL_FLUSH or Z_FINISH
-  int err;
-
-  if ( (err=CompressInit(dest, destLen, source, sourceLen)) != Z_OK )
-    return err;
-
-  // This is used to figure out how many bytes we wrote *this chunk*
-  int compressed_size = comp_stream_.total_out;
-
-  // Some setup happens only for the first chunk we compress in a run
-  if ( first_chunk_ ) {
-    first_chunk_ = false;
-  }
-
-  // flush_mode is Z_FINISH for all mode, Z_SYNC_FLUSH for incremental
-  // compression.
-  err = deflate(&comp_stream_, flush_mode);
-
-  *sourceLen = comp_stream_.avail_in;
-
-  if ((err == Z_STREAM_END || err == Z_OK)
-      && comp_stream_.avail_in == 0
-      && comp_stream_.avail_out != 0 ) {
-    // we processed everything ok and the output buffer was large enough.
-    ;
-  } else if (err == Z_STREAM_END && comp_stream_.avail_in > 0) {
-    return Z_BUF_ERROR;                            // should never happen
-  } else if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) {
-    // an error happened
-    CompressErrorInit();
-    return err;
-  } else if (comp_stream_.avail_out == 0) {     // not enough space
-    err = Z_BUF_ERROR;
-  }
-
-  assert(err == Z_OK || err == Z_STREAM_END || err == Z_BUF_ERROR);
-  if (err == Z_STREAM_END)
-    err = Z_OK;
-
-  // update the crc and other metadata
-  compressed_size = comp_stream_.total_out - compressed_size;  // delta
-  *destLen = compressed_size;
-
-  return err;
-}
-
-int ZLib::CompressChunkOrAll(Bytef *dest, uLongf *destLen,
-                             const Bytef *source, uLong sourceLen,
-                             int flush_mode) {   // Z_FULL_FLUSH or Z_FINISH
-  const int ret =
-    CompressAtMostOrAll(dest, destLen, source, &sourceLen, flush_mode);
-  if (ret == Z_BUF_ERROR)
-    CompressErrorInit();
-  return ret;
-}
-
-// This routine only initializes the compression stream once.  Thereafter, it
-// just does a deflateReset on the stream, which should be faster.
-int ZLib::Compress(Bytef *dest, uLongf *destLen,
-                   const Bytef *source, uLong sourceLen) {
-  int err;
-  if ( (err=CompressChunkOrAll(dest, destLen, source, sourceLen,
-                               Z_FINISH)) != Z_OK )
-    return err;
-  Reset();         // reset for next call to Compress
-
-  return Z_OK;
-}
-
-
-// --------- UNCOMPRESS MODE
-
-int ZLib::InflateInit() {
-  return inflateInit2(&uncomp_stream_, MAX_WBITS);
-}
-
-// Initialization method to be called if we hit an error while
-// uncompressing. On hitting an error, call this method before
-// returning the error.
-void ZLib::UncompressErrorInit() {
-  inflateEnd(&uncomp_stream_);
-  uncomp_init_ = false;
-  Reset();
-}
-
-int ZLib::UncompressInit(Bytef *dest, uLongf *destLen,
-                         const Bytef *source, uLong *sourceLen) {
-  int err;
-
-  uncomp_stream_.next_in = (Bytef*)source;
-  uncomp_stream_.avail_in = (uInt)*sourceLen;
-  // Check for source > 64K on 16-bit machine:
-  if ((uLong)uncomp_stream_.avail_in != *sourceLen) return Z_BUF_ERROR;
-
-  uncomp_stream_.next_out = dest;
-  uncomp_stream_.avail_out = (uInt)*destLen;
-  if ((uLong)uncomp_stream_.avail_out != *destLen) return Z_BUF_ERROR;
-
-  if ( !first_chunk_ )   // only need to set up stream the first time through
-    return Z_OK;
-
-  if (uncomp_init_) {    // we've already initted it
-    err = inflateReset(&uncomp_stream_);
-    if (err != Z_OK) {
-      LOG(WARNING)
-        << "ERROR: Can't reset uncompress object; creating a new one";
-      UncompressErrorInit();
-    }
-  }
-  if (!uncomp_init_) {
-    uncomp_stream_.zalloc = (alloc_func)0;
-    uncomp_stream_.zfree = (free_func)0;
-    uncomp_stream_.opaque = (voidpf)0;
-    err = InflateInit();
-    if (err != Z_OK) return err;
-    uncomp_init_ = true;
-  }
-  return Z_OK;
-}
-
-// If you compressed your data a chunk at a time, with CompressChunk,
-// you can uncompress it a chunk at a time with UncompressChunk.
-// Only difference bewteen chunked and unchunked uncompression
-// is the flush mode we use: Z_SYNC_FLUSH (chunked) or Z_FINISH (unchunked).
-int ZLib::UncompressAtMostOrAll(Bytef *dest, uLongf *destLen,
-                                const Bytef *source, uLong *sourceLen,
-                                int flush_mode) {  // Z_SYNC_FLUSH or Z_FINISH
-  int err = Z_OK;
-
-  if ( (err=UncompressInit(dest, destLen, source, sourceLen)) != Z_OK ) {
-    LOG(WARNING) << "UncompressInit: Error: " << err << " SourceLen: "
-                 << *sourceLen;
-    return err;
-  }
-
-  // This is used to figure out how many output bytes we wrote *this chunk*:
-  const uLong old_total_out = uncomp_stream_.total_out;
-
-  // This is used to figure out how many input bytes we read *this chunk*:
-  const uLong old_total_in = uncomp_stream_.total_in;
-
-  // Some setup happens only for the first chunk we compress in a run
-  if ( first_chunk_ ) {
-    first_chunk_ = false;                          // so we don't do this again
-
-    // For the first chunk *only* (to avoid infinite troubles), we let
-    // there be no actual data to uncompress.  This sometimes triggers
-    // when the input is only the gzip header, say.
-    if ( *sourceLen == 0 ) {
-      *destLen = 0;
-      return Z_OK;
-    }
-  }
-
-  // We'll uncompress as much as we can.  If we end OK great, otherwise
-  // if we get an error that seems to be the gzip footer, we store the
-  // gzip footer and return OK, otherwise we return the error.
-
-  // flush_mode is Z_SYNC_FLUSH for chunked mode, Z_FINISH for all mode.
-  err = inflate(&uncomp_stream_, flush_mode);
-
-  // Figure out how many bytes of the input zlib slurped up:
-  const uLong bytes_read = uncomp_stream_.total_in - old_total_in;
-  CHECK_LE(source + bytes_read, source + *sourceLen);
-  *sourceLen = uncomp_stream_.avail_in;
-
-  if ((err == Z_STREAM_END || err == Z_OK)  // everything went ok
-             && uncomp_stream_.avail_in == 0) {    // and we read it all
-    ;
-  } else if (err == Z_STREAM_END && uncomp_stream_.avail_in > 0) {
-    LOG(WARNING)
-      << "UncompressChunkOrAll: Received some extra data, bytes total: "
-      << uncomp_stream_.avail_in << " bytes: "
-      << string(reinterpret_cast<const char *>(uncomp_stream_.next_in),
-                min(int(uncomp_stream_.avail_in), 20));
-    UncompressErrorInit();
-    return Z_DATA_ERROR;       // what's the extra data for?
-  } else if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) {
-    // an error happened
-    LOG(WARNING) << "UncompressChunkOrAll: Error: " << err
-                 << " avail_out: " << uncomp_stream_.avail_out;
-    UncompressErrorInit();
-    return err;
-  } else if (uncomp_stream_.avail_out == 0) {
-    err = Z_BUF_ERROR;
-  }
-
-  assert(err == Z_OK || err == Z_BUF_ERROR || err == Z_STREAM_END);
-  if (err == Z_STREAM_END)
-    err = Z_OK;
-
-  *destLen = uncomp_stream_.total_out - old_total_out;  // size for this call
-
-  return err;
-}
-
-int ZLib::UncompressChunkOrAll(Bytef *dest, uLongf *destLen,
-                               const Bytef *source, uLong sourceLen,
-                               int flush_mode) {  // Z_SYNC_FLUSH or Z_FINISH
-  const int ret =
-    UncompressAtMostOrAll(dest, destLen, source, &sourceLen, flush_mode);
-  if (ret == Z_BUF_ERROR)
-    UncompressErrorInit();
-  return ret;
-}
-
-int ZLib::UncompressAtMost(Bytef *dest, uLongf *destLen,
-                          const Bytef *source, uLong *sourceLen) {
-  return UncompressAtMostOrAll(dest, destLen, source, sourceLen, Z_SYNC_FLUSH);
-}
-
-// We make sure we've uncompressed everything, that is, the current
-// uncompress stream is at a compressed-buffer-EOF boundary.  In gzip
-// mode, we also check the gzip footer to make sure we pass the gzip
-// consistency checks.  We RETURN true iff both types of checks pass.
-bool ZLib::UncompressChunkDone() {
-  assert(!first_chunk_ && uncomp_init_);
-  // Make sure we're at the end-of-compressed-data point.  This means
-  // if we call inflate with Z_FINISH we won't consume any input or
-  // write any output
-  Bytef dummyin, dummyout;
-  uLongf dummylen = 0;
-  if ( UncompressChunkOrAll(&dummyout, &dummylen, &dummyin, 0, Z_FINISH)
-       != Z_OK ) {
-    return false;
-  }
-
-  // Make sure that when we exit, we can start a new round of chunks later
-  Reset();
-
-  return true;
-}
-
-// Uncompresses the source buffer into the destination buffer.
-// The destination buffer must be long enough to hold the entire
-// decompressed contents.
-//
-// We only initialize the uncomp_stream once.  Thereafter, we use
-// inflateReset, which should be faster.
-//
-// Returns Z_OK on success, otherwise, it returns a zlib error code.
-int ZLib::Uncompress(Bytef *dest, uLongf *destLen,
-                     const Bytef *source, uLong sourceLen) {
-  int err;
-  if ( (err=UncompressChunkOrAll(dest, destLen, source, sourceLen,
-                                 Z_FINISH)) != Z_OK ) {
-    Reset();                           // let us try to compress again
-    return err;
-  }
-  if ( !UncompressChunkDone() )        // calls Reset()
-    return Z_DATA_ERROR;
-  return Z_OK;  // stream_end is ok
-}
-
-#endif  // HAVE_LIBZ
-
-}  // namespace snappy
diff --git a/main/snappy/snappy-test.h b/main/snappy/snappy-test.h
deleted file mode 100644
index f7ba79ed..00000000
--- a/main/snappy/snappy-test.h
+++ /dev/null
@@ -1,580 +0,0 @@
-// Copyright 2011 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Various stubs for the unit tests for the open-source version of Snappy.
-
-#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_
-#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_
-
-#include <iostream>
-#include <string>
-
-#include "snappy-stubs-internal.h"
-
-#include <stdio.h>
-#include <stdarg.h>
-
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#endif
-
-#ifdef HAVE_SYS_RESOURCE_H
-#include <sys/resource.h>
-#endif
-
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-
-#ifdef HAVE_WINDOWS_H
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#endif
-
-#include <string>
-
-#ifdef HAVE_GTEST
-
-#include <gtest/gtest.h>
-#undef TYPED_TEST
-#define TYPED_TEST TEST
-#define INIT_GTEST(argc, argv) ::testing::InitGoogleTest(argc, *argv)
-
-#else
-
-// Stubs for if the user doesn't have Google Test installed.
-
-#define TEST(test_case, test_subcase) \
-  void Test_ ## test_case ## _ ## test_subcase()
-#define INIT_GTEST(argc, argv)
-
-#define TYPED_TEST TEST
-#define EXPECT_EQ CHECK_EQ
-#define EXPECT_NE CHECK_NE
-#define EXPECT_FALSE(cond) CHECK(!(cond))
-
-#endif
-
-#ifdef HAVE_GFLAGS
-
-#include <gflags/gflags.h>
-
-// This is tricky; both gflags and Google Test want to look at the command line
-// arguments. Google Test seems to be the most happy with unknown arguments,
-// though, so we call it first and hope for the best.
-#define InitGoogle(argv0, argc, argv, remove_flags) \
-  INIT_GTEST(argc, argv); \
-  google::ParseCommandLineFlags(argc, argv, remove_flags);
-
-#else
-
-// If we don't have the gflags package installed, these can only be
-// changed at compile time.
-#define DEFINE_int32(flag_name, default_value, description) \
-  static int FLAGS_ ## flag_name = default_value;
-
-#define InitGoogle(argv0, argc, argv, remove_flags) \
-  INIT_GTEST(argc, argv)
-
-#endif
-
-#ifdef HAVE_LIBZ
-#include "zlib.h"
-#endif
-
-#ifdef HAVE_LIBLZO2
-#include "lzo/lzo1x.h"
-#endif
-
-#ifdef HAVE_LIBLZF
-extern "C" {
-#include "lzf.h"
-}
-#endif
-
-#ifdef HAVE_LIBFASTLZ
-#include "fastlz.h"
-#endif
-
-#ifdef HAVE_LIBQUICKLZ
-#include "quicklz.h"
-#endif
-
-namespace {
-
-namespace File {
-  void Init() { }
-}  // namespace File
-
-namespace file {
-  int Defaults() { }
-
-  class DummyStatus {
-   public:
-    void CheckSuccess() { }
-  };
-
-  DummyStatus GetContents(const string& filename, string* data, int unused) {
-    FILE* fp = fopen(filename.c_str(), "rb");
-    if (fp == NULL) {
-      perror(filename.c_str());
-      exit(1);
-    }
-
-    data->clear();
-    while (!feof(fp)) {
-      char buf[4096];
-      size_t ret = fread(buf, 1, 4096, fp);
-      if (ret == 0 && ferror(fp)) {
-        perror("fread");
-        exit(1);
-      }
-      data->append(string(buf, ret));
-    }
-
-    fclose(fp);
-  }
-
-  DummyStatus SetContents(const string& filename,
-                          const string& str,
-                          int unused) {
-    FILE* fp = fopen(filename.c_str(), "wb");
-    if (fp == NULL) {
-      perror(filename.c_str());
-      exit(1);
-    }
-
-    int ret = fwrite(str.data(), str.size(), 1, fp);
-    if (ret != 1) {
-      perror("fwrite");
-      exit(1);
-    }
-
-    fclose(fp);
-  }
-}  // namespace file
-
-}  // namespace
-
-namespace snappy {
-
-#define FLAGS_test_random_seed 301
-typedef string TypeParam;
-
-void Test_CorruptedTest_VerifyCorrupted();
-void Test_Snappy_SimpleTests();
-void Test_Snappy_MaxBlowup();
-void Test_Snappy_RandomData();
-void Test_Snappy_FourByteOffset();
-void Test_SnappyCorruption_TruncatedVarint();
-void Test_SnappyCorruption_UnterminatedVarint();
-void Test_Snappy_ReadPastEndOfBuffer();
-void Test_Snappy_FindMatchLength();
-void Test_Snappy_FindMatchLengthRandom();
-
-string ReadTestDataFile(const string& base, size_t size_limit);
-
-string ReadTestDataFile(const string& base);
-
-// A sprintf() variant that returns a std::string.
-// Not safe for general use due to truncation issues.
-string StringPrintf(const char* format, ...);
-
-// A simple, non-cryptographically-secure random generator.
-class ACMRandom {
- public:
-  explicit ACMRandom(uint32 seed) : seed_(seed) {}
-
-  int32 Next();
-
-  int32 Uniform(int32 n) {
-    return Next() % n;
-  }
-  uint8 Rand8() {
-    return static_cast<uint8>((Next() >> 1) & 0x000000ff);
-  }
-  bool OneIn(int X) { return Uniform(X) == 0; }
-
-  // Skewed: pick "base" uniformly from range [0,max_log] and then
-  // return "base" random bits.  The effect is to pick a number in the
-  // range [0,2^max_log-1] with bias towards smaller numbers.
-  int32 Skewed(int max_log);
-
- private:
-  static const uint32 M = 2147483647L;   // 2^31-1
-  uint32 seed_;
-};
-
-inline int32 ACMRandom::Next() {
-  static const uint64 A = 16807;  // bits 14, 8, 7, 5, 2, 1, 0
-  // We are computing
-  //       seed_ = (seed_ * A) % M,    where M = 2^31-1
-  //
-  // seed_ must not be zero or M, or else all subsequent computed values
-  // will be zero or M respectively.  For all other values, seed_ will end
-  // up cycling through every number in [1,M-1]
-  uint64 product = seed_ * A;
-
-  // Compute (product % M) using the fact that ((x << 31) % M) == x.
-  seed_ = (product >> 31) + (product & M);
-  // The first reduction may overflow by 1 bit, so we may need to repeat.
-  // mod == M is not possible; using > allows the faster sign-bit-based test.
-  if (seed_ > M) {
-    seed_ -= M;
-  }
-  return seed_;
-}
-
-inline int32 ACMRandom::Skewed(int max_log) {
-  const int32 base = (Next() - 1) % (max_log+1);
-  return (Next() - 1) & ((1u << base)-1);
-}
-
-// A wall-time clock. This stub is not super-accurate, nor resistant to the
-// system time changing.
-class CycleTimer {
- public:
-  CycleTimer() : real_time_us_(0) {}
-
-  void Start() {
-#ifdef WIN32
-    QueryPerformanceCounter(&start_);
-#else
-    gettimeofday(&start_, NULL);
-#endif
-  }
-
-  void Stop() {
-#ifdef WIN32
-    LARGE_INTEGER stop;
-    LARGE_INTEGER frequency;
-    QueryPerformanceCounter(&stop);
-    QueryPerformanceFrequency(&frequency);
-
-    double elapsed = static_cast<double>(stop.QuadPart - start_.QuadPart) /
-        frequency.QuadPart;
-    real_time_us_ += elapsed * 1e6 + 0.5;
-#else
-    struct timeval stop;
-    gettimeofday(&stop, NULL);
-
-    real_time_us_ += 1000000 * (stop.tv_sec - start_.tv_sec);
-    real_time_us_ += (stop.tv_usec - start_.tv_usec);
-#endif
-  }
-
-  double Get() {
-    return real_time_us_ * 1e-6;
-  }
-
- private:
-  int64 real_time_us_;
-#ifdef WIN32
-  LARGE_INTEGER start_;
-#else
-  struct timeval start_;
-#endif
-};
-
-// Minimalistic microbenchmark framework.
-
-typedef void (*BenchmarkFunction)(int, int);
-
-class Benchmark {
- public:
-  Benchmark(const string& name, BenchmarkFunction function) :
-      name_(name), function_(function) {}
-
-  Benchmark* DenseRange(int start, int stop) {
-    start_ = start;
-    stop_ = stop;
-    return this;
-  }
-
-  void Run();
-
- private:
-  const string name_;
-  const BenchmarkFunction function_;
-  int start_, stop_;
-};
-#define BENCHMARK(benchmark_name) \
-  Benchmark* Benchmark_ ## benchmark_name = \
-          (new Benchmark(#benchmark_name, benchmark_name))
-
-extern Benchmark* Benchmark_BM_UFlat;
-extern Benchmark* Benchmark_BM_UValidate;
-extern Benchmark* Benchmark_BM_ZFlat;
-
-void ResetBenchmarkTiming();
-void StartBenchmarkTiming();
-void StopBenchmarkTiming();
-void SetBenchmarkLabel(const string& str);
-void SetBenchmarkBytesProcessed(int64 bytes);
-
-#ifdef HAVE_LIBZ
-
-// Object-oriented wrapper around zlib.
-class ZLib {
- public:
-  ZLib();
-  ~ZLib();
-
-  // Wipe a ZLib object to a virgin state.  This differs from Reset()
-  // in that it also breaks any state.
-  void Reinit();
-
-  // Call this to make a zlib buffer as good as new.  Here's the only
-  // case where they differ:
-  //    CompressChunk(a); CompressChunk(b); CompressChunkDone();   vs
-  //    CompressChunk(a); Reset(); CompressChunk(b); CompressChunkDone();
-  // You'll want to use Reset(), then, when you interrupt a compress
-  // (or uncompress) in the middle of a chunk and want to start over.
-  void Reset();
-
-  // According to the zlib manual, when you Compress, the destination
-  // buffer must have size at least src + .1%*src + 12.  This function
-  // helps you calculate that.  Augment this to account for a potential
-  // gzip header and footer, plus a few bytes of slack.
-  static int MinCompressbufSize(int uncompress_size) {
-    return uncompress_size + uncompress_size/1000 + 40;
-  }
-
-  // Compresses the source buffer into the destination buffer.
-  // sourceLen is the byte length of the source buffer.
-  // Upon entry, destLen is the total size of the destination buffer,
-  // which must be of size at least MinCompressbufSize(sourceLen).
-  // Upon exit, destLen is the actual size of the compressed buffer.
-  //
-  // This function can be used to compress a whole file at once if the
-  // input file is mmap'ed.
-  //
-  // Returns Z_OK if success, Z_MEM_ERROR if there was not
-  // enough memory, Z_BUF_ERROR if there was not enough room in the
-  // output buffer. Note that if the output buffer is exactly the same
-  // size as the compressed result, we still return Z_BUF_ERROR.
-  // (check CL#1936076)
-  int Compress(Bytef *dest, uLongf *destLen,
-               const Bytef *source, uLong sourceLen);
-
-  // Uncompresses the source buffer into the destination buffer.
-  // The destination buffer must be long enough to hold the entire
-  // decompressed contents.
-  //
-  // Returns Z_OK on success, otherwise, it returns a zlib error code.
-  int Uncompress(Bytef *dest, uLongf *destLen,
-                 const Bytef *source, uLong sourceLen);
-
-  // Uncompress data one chunk at a time -- ie you can call this
-  // more than once.  To get this to work you need to call per-chunk
-  // and "done" routines.
-  //
-  // Returns Z_OK if success, Z_MEM_ERROR if there was not
-  // enough memory, Z_BUF_ERROR if there was not enough room in the
-  // output buffer.
-
-  int UncompressAtMost(Bytef *dest, uLongf *destLen,
-                       const Bytef *source, uLong *sourceLen);
-
-  // Checks gzip footer information, as needed.  Mostly this just
-  // makes sure the checksums match.  Whenever you call this, it
-  // will assume the last 8 bytes from the previous UncompressChunk
-  // call are the footer.  Returns true iff everything looks ok.
-  bool UncompressChunkDone();
-
- private:
-  int InflateInit();       // sets up the zlib inflate structure
-  int DeflateInit();       // sets up the zlib deflate structure
-
-  // These init the zlib data structures for compressing/uncompressing
-  int CompressInit(Bytef *dest, uLongf *destLen,
-                   const Bytef *source, uLong *sourceLen);
-  int UncompressInit(Bytef *dest, uLongf *destLen,
-                     const Bytef *source, uLong *sourceLen);
-  // Initialization method to be called if we hit an error while
-  // uncompressing. On hitting an error, call this method before
-  // returning the error.
-  void UncompressErrorInit();
-
-  // Helper function for Compress
-  int CompressChunkOrAll(Bytef *dest, uLongf *destLen,
-                         const Bytef *source, uLong sourceLen,
-                         int flush_mode);
-  int CompressAtMostOrAll(Bytef *dest, uLongf *destLen,
-                          const Bytef *source, uLong *sourceLen,
-                          int flush_mode);
-
-  // Likewise for UncompressAndUncompressChunk
-  int UncompressChunkOrAll(Bytef *dest, uLongf *destLen,
-                           const Bytef *source, uLong sourceLen,
-                           int flush_mode);
-
-  int UncompressAtMostOrAll(Bytef *dest, uLongf *destLen,
-                            const Bytef *source, uLong *sourceLen,
-                            int flush_mode);
-
-  // Initialization method to be called if we hit an error while
-  // compressing. On hitting an error, call this method before
-  // returning the error.
-  void CompressErrorInit();
-
-  int compression_level_;   // compression level
-  int window_bits_;         // log base 2 of the window size used in compression
-  int mem_level_;           // specifies the amount of memory to be used by
-                            // compressor (1-9)
-  z_stream comp_stream_;    // Zlib stream data structure
-  bool comp_init_;          // True if we have initialized comp_stream_
-  z_stream uncomp_stream_;  // Zlib stream data structure
-  bool uncomp_init_;        // True if we have initialized uncomp_stream_
-
-  // These are used only with chunked compression.
-  bool first_chunk_;       // true if we need to emit headers with this chunk
-};
-
-#endif  // HAVE_LIBZ
-
-}  // namespace snappy
-
-DECLARE_bool(run_microbenchmarks);
-
-static void RunSpecifiedBenchmarks() {
-  if (!FLAGS_run_microbenchmarks) {
-    return;
-  }
-
-  fprintf(stderr, "Running microbenchmarks.\n");
-#ifndef NDEBUG
-  fprintf(stderr, "WARNING: Compiled with assertions enabled, will be slow.\n");
-#endif
-#ifndef __OPTIMIZE__
-  fprintf(stderr, "WARNING: Compiled without optimization, will be slow.\n");
-#endif
-  fprintf(stderr, "Benchmark            Time(ns)    CPU(ns) Iterations\n");
-  fprintf(stderr, "---------------------------------------------------\n");
-
-  snappy::Benchmark_BM_UFlat->Run();
-  snappy::Benchmark_BM_UValidate->Run();
-  snappy::Benchmark_BM_ZFlat->Run();
-
-  fprintf(stderr, "\n");
-}
-
-#ifndef HAVE_GTEST
-
-static inline int RUN_ALL_TESTS() {
-  fprintf(stderr, "Running correctness tests.\n");
-  snappy::Test_CorruptedTest_VerifyCorrupted();
-  snappy::Test_Snappy_SimpleTests();
-  snappy::Test_Snappy_MaxBlowup();
-  snappy::Test_Snappy_RandomData();
-  snappy::Test_Snappy_FourByteOffset();
-  snappy::Test_SnappyCorruption_TruncatedVarint();
-  snappy::Test_SnappyCorruption_UnterminatedVarint();
-  snappy::Test_Snappy_ReadPastEndOfBuffer();
-  snappy::Test_Snappy_FindMatchLength();
-  snappy::Test_Snappy_FindMatchLengthRandom();
-  fprintf(stderr, "All tests passed.\n");
-
-  return 0;
-}
-
-#endif  // HAVE_GTEST
-
-// For main().
-namespace snappy {
-
-static void CompressFile(const char* fname);
-static void UncompressFile(const char* fname);
-static void MeasureFile(const char* fname);
-
-// Logging.
-
-#define LOG(level) LogMessage()
-#define VLOG(level) true ? (void)0 : \
-    snappy::LogMessageVoidify() & snappy::LogMessage()
-
-class LogMessage {
- public:
-  LogMessage() { }
-  ~LogMessage() {
-    cerr << endl;
-  }
-
-  LogMessage& operator<<(const std::string& msg) {
-    cerr << msg;
-    return *this;
-  }
-  LogMessage& operator<<(int x) {
-    cerr << x;
-    return *this;
-  }
-};
-
-// Asserts, both versions activated in debug mode only,
-// and ones that are always active.
-
-#define CRASH_UNLESS(condition) \
-    PREDICT_TRUE(condition) ? (void)0 : \
-    snappy::LogMessageVoidify() & snappy::LogMessageCrash()
-
-class LogMessageCrash : public LogMessage {
- public:
-  LogMessageCrash() { }
-  ~LogMessageCrash() {
-    cerr << endl;
-    abort();
-  }
-};
-
-// This class is used to explicitly ignore values in the conditional
-// logging macros.  This avoids compiler warnings like "value computed
-// is not used" and "statement has no effect".
-
-class LogMessageVoidify {
- public:
-  LogMessageVoidify() { }
-  // This has to be an operator with a precedence lower than << but
-  // higher than ?:
-  void operator&(const LogMessage&) { }
-};
-
-#define CHECK(cond) CRASH_UNLESS(cond)
-#define CHECK_LE(a, b) CRASH_UNLESS((a) <= (b))
-#define CHECK_GE(a, b) CRASH_UNLESS((a) >= (b))
-#define CHECK_EQ(a, b) CRASH_UNLESS((a) == (b))
-#define CHECK_NE(a, b) CRASH_UNLESS((a) != (b))
-#define CHECK_LT(a, b) CRASH_UNLESS((a) < (b))
-#define CHECK_GT(a, b) CRASH_UNLESS((a) > (b))
-
-}  // namespace
-
-using snappy::CompressFile;
-using snappy::UncompressFile;
-using snappy::MeasureFile;
-
-#endif  // UTIL_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_
diff --git a/main/snappy/snappy.cc b/main/snappy/snappy.cc
deleted file mode 100644
index 1230321f..00000000
--- a/main/snappy/snappy.cc
+++ /dev/null
@@ -1,1119 +0,0 @@
-// Copyright 2005 Google Inc. All Rights Reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "snappy.h"
-#include "snappy-internal.h"
-#include "snappy-sinksource.h"
-
-#include <stdio.h>
-
-#include <algorithm>
-#include <string>
-#include <vector>
-
-
-namespace snappy {
-
-// Any hash function will produce a valid compressed bitstream, but a good
-// hash function reduces the number of collisions and thus yields better
-// compression for compressible input, and more speed for incompressible
-// input. Of course, it doesn't hurt if the hash function is reasonably fast
-// either, as it gets called a lot.
-static inline uint32 HashBytes(uint32 bytes, int shift) {
-  uint32 kMul = 0x1e35a7bd;
-  return (bytes * kMul) >> shift;
-}
-static inline uint32 Hash(const char* p, int shift) {
-  return HashBytes(UNALIGNED_LOAD32(p), shift);
-}
-
-size_t MaxCompressedLength(size_t source_len) {
-  // Compressed data can be defined as:
-  //    compressed := item* literal*
-  //    item       := literal* copy
-  //
-  // The trailing literal sequence has a space blowup of at most 62/60
-  // since a literal of length 60 needs one tag byte + one extra byte
-  // for length information.
-  //
-  // Item blowup is trickier to measure.  Suppose the "copy" op copies
-  // 4 bytes of data.  Because of a special check in the encoding code,
-  // we produce a 4-byte copy only if the offset is < 65536.  Therefore
-  // the copy op takes 3 bytes to encode, and this type of item leads
-  // to at most the 62/60 blowup for representing literals.
-  //
-  // Suppose the "copy" op copies 5 bytes of data.  If the offset is big
-  // enough, it will take 5 bytes to encode the copy op.  Therefore the
-  // worst case here is a one-byte literal followed by a five-byte copy.
-  // I.e., 6 bytes of input turn into 7 bytes of "compressed" data.
-  //
-  // This last factor dominates the blowup, so the final estimate is:
-  return 32 + source_len + source_len/6;
-}
-
-enum {
-  LITERAL = 0,
-  COPY_1_BYTE_OFFSET = 1,  // 3 bit length + 3 bits of offset in opcode
-  COPY_2_BYTE_OFFSET = 2,
-  COPY_4_BYTE_OFFSET = 3
-};
-
-// Copy "len" bytes from "src" to "op", one byte at a time.  Used for
-// handling COPY operations where the input and output regions may
-// overlap.  For example, suppose:
-//    src    == "ab"
-//    op     == src + 2
-//    len    == 20
-// After IncrementalCopy(src, op, len), the result will have
-// eleven copies of "ab"
-//    ababababababababababab
-// Note that this does not match the semantics of either memcpy()
-// or memmove().
-static inline void IncrementalCopy(const char* src, char* op, int len) {
-  assert(len > 0);
-  do {
-    *op++ = *src++;
-  } while (--len > 0);
-}
-
-// Equivalent to IncrementalCopy except that it can write up to ten extra
-// bytes after the end of the copy, and that it is faster.
-//
-// The main part of this loop is a simple copy of eight bytes at a time until
-// we've copied (at least) the requested amount of bytes.  However, if op and
-// src are less than eight bytes apart (indicating a repeating pattern of
-// length < 8), we first need to expand the pattern in order to get the correct
-// results. For instance, if the buffer looks like this, with the eight-byte
-// <src> and <op> patterns marked as intervals:
-//
-//    abxxxxxxxxxxxx
-//    [------]           src
-//      [------]         op
-//
-// a single eight-byte copy from <src> to <op> will repeat the pattern once,
-// after which we can move <op> two bytes without moving <src>:
-//
-//    ababxxxxxxxxxx
-//    [------]           src
-//        [------]       op
-//
-// and repeat the exercise until the two no longer overlap.
-//
-// This allows us to do very well in the special case of one single byte
-// repeated many times, without taking a big hit for more general cases.
-//
-// The worst case of extra writing past the end of the match occurs when
-// op - src == 1 and len == 1; the last copy will read from byte positions
-// [0..7] and write to [4..11], whereas it was only supposed to write to
-// position 1. Thus, ten excess bytes.
-
-namespace {
-
-const int kMaxIncrementCopyOverflow = 10;
-
-}  // namespace
-
-static inline void IncrementalCopyFastPath(const char* src, char* op, int len) {
-  while (op - src < 8) {
-    UnalignedCopy64(src, op);
-    len -= op - src;
-    op += op - src;
-  }
-  while (len > 0) {
-    UnalignedCopy64(src, op);
-    src += 8;
-    op += 8;
-    len -= 8;
-  }
-}
-
-static inline char* EmitLiteral(char* op,
-                                const char* literal,
-                                int len,
-                                bool allow_fast_path) {
-  int n = len - 1;      // Zero-length literals are disallowed
-  if (n < 60) {
-    // Fits in tag byte
-    *op++ = LITERAL | (n << 2);
-
-    // The vast majority of copies are below 16 bytes, for which a
-    // call to memcpy is overkill. This fast path can sometimes
-    // copy up to 15 bytes too much, but that is okay in the
-    // main loop, since we have a bit to go on for both sides:
-    //
-    //   - The input will always have kInputMarginBytes = 15 extra
-    //     available bytes, as long as we're in the main loop, and
-    //     if not, allow_fast_path = false.
-    //   - The output will always have 32 spare bytes (see
-    //     MaxCompressedLength).
-    if (allow_fast_path && len <= 16) {
-      UnalignedCopy64(literal, op);
-      UnalignedCopy64(literal + 8, op + 8);
-      return op + len;
-    }
-  } else {
-    // Encode in upcoming bytes
-    char* base = op;
-    int count = 0;
-    op++;
-    while (n > 0) {
-      *op++ = n & 0xff;
-      n >>= 8;
-      count++;
-    }
-    assert(count >= 1);
-    assert(count <= 4);
-    *base = LITERAL | ((59+count) << 2);
-  }
-  memcpy(op, literal, len);
-  return op + len;
-}
-
-static inline char* EmitCopyLessThan64(char* op, size_t offset, int len) {
-  assert(len <= 64);
-  assert(len >= 4);
-  assert(offset < 65536);
-
-  if ((len < 12) && (offset < 2048)) {
-    size_t len_minus_4 = len - 4;
-    assert(len_minus_4 < 8);            // Must fit in 3 bits
-    *op++ = COPY_1_BYTE_OFFSET + ((len_minus_4) << 2) + ((offset >> 8) << 5);
-    *op++ = offset & 0xff;
-  } else {
-    *op++ = COPY_2_BYTE_OFFSET + ((len-1) << 2);
-    LittleEndian::Store16(op, offset);
-    op += 2;
-  }
-  return op;
-}
-
-static inline char* EmitCopy(char* op, size_t offset, int len) {
-  // Emit 64 byte copies but make sure to keep at least four bytes reserved
-  while (len >= 68) {
-    op = EmitCopyLessThan64(op, offset, 64);
-    len -= 64;
-  }
-
-  // Emit an extra 60 byte copy if have too much data to fit in one copy
-  if (len > 64) {
-    op = EmitCopyLessThan64(op, offset, 60);
-    len -= 60;
-  }
-
-  // Emit remainder
-  op = EmitCopyLessThan64(op, offset, len);
-  return op;
-}
-
-
-bool GetUncompressedLength(const char* start, size_t n, size_t* result) {
-  uint32 v = 0;
-  const char* limit = start + n;
-  if (Varint::Parse32WithLimit(start, limit, &v) != NULL) {
-    *result = v;
-    return true;
-  } else {
-    return false;
-  }
-}
-
-namespace internal {
-uint16* WorkingMemory::GetHashTable(size_t input_size, int* table_size) {
-  // Use smaller hash table when input.size() is smaller, since we
-  // fill the table, incurring O(hash table size) overhead for
-  // compression, and if the input is short, we won't need that
-  // many hash table entries anyway.
-  assert(kMaxHashTableSize >= 256);
-  size_t htsize = 256;
-  while (htsize < kMaxHashTableSize && htsize < input_size) {
-    htsize <<= 1;
-  }
-
-  uint16* table;
-  if (htsize <= ARRAYSIZE(small_table_)) {
-    table = small_table_;
-  } else {
-    if (large_table_ == NULL) {
-      large_table_ = new uint16[kMaxHashTableSize];
-    }
-    table = large_table_;
-  }
-
-  *table_size = htsize;
-  memset(table, 0, htsize * sizeof(*table));
-  return table;
-}
-}  // end namespace internal
-
-// For 0 <= offset <= 4, GetUint32AtOffset(GetEightBytesAt(p), offset) will
-// equal UNALIGNED_LOAD32(p + offset).  Motivation: On x86-64 hardware we have
-// empirically found that overlapping loads such as
-//  UNALIGNED_LOAD32(p) ... UNALIGNED_LOAD32(p+1) ... UNALIGNED_LOAD32(p+2)
-// are slower than UNALIGNED_LOAD64(p) followed by shifts and casts to uint32.
-//
-// We have different versions for 64- and 32-bit; ideally we would avoid the
-// two functions and just inline the UNALIGNED_LOAD64 call into
-// GetUint32AtOffset, but GCC (at least not as of 4.6) is seemingly not clever
-// enough to avoid loading the value multiple times then. For 64-bit, the load
-// is done when GetEightBytesAt() is called, whereas for 32-bit, the load is
-// done at GetUint32AtOffset() time.
-
-#ifdef ARCH_K8
-
-typedef uint64 EightBytesReference;
-
-static inline EightBytesReference GetEightBytesAt(const char* ptr) {
-  return UNALIGNED_LOAD64(ptr);
-}
-
-static inline uint32 GetUint32AtOffset(uint64 v, int offset) {
-  assert(offset >= 0);
-  assert(offset <= 4);
-  return v >> (LittleEndian::IsLittleEndian() ? 8 * offset : 32 - 8 * offset);
-}
-
-#else
-
-typedef const char* EightBytesReference;
-
-static inline EightBytesReference GetEightBytesAt(const char* ptr) {
-  return ptr;
-}
-
-static inline uint32 GetUint32AtOffset(const char* v, int offset) {
-  assert(offset >= 0);
-  assert(offset <= 4);
-  return UNALIGNED_LOAD32(v + offset);
-}
-
-#endif
-
-// Flat array compression that does not emit the "uncompressed length"
-// prefix. Compresses "input" string to the "*op" buffer.
-//
-// REQUIRES: "input" is at most "kBlockSize" bytes long.
-// REQUIRES: "op" points to an array of memory that is at least
-// "MaxCompressedLength(input.size())" in size.
-// REQUIRES: All elements in "table[0..table_size-1]" are initialized to zero.
-// REQUIRES: "table_size" is a power of two
-//
-// Returns an "end" pointer into "op" buffer.
-// "end - op" is the compressed size of "input".
-namespace internal {
-char* CompressFragment(const char* input,
-                       size_t input_size,
-                       char* op,
-                       uint16* table,
-                       const int table_size) {
-  // "ip" is the input pointer, and "op" is the output pointer.
-  const char* ip = input;
-  assert(input_size <= kBlockSize);
-  assert((table_size & (table_size - 1)) == 0); // table must be power of two
-  const int shift = 32 - Bits::Log2Floor(table_size);
-  assert(static_cast<int>(kuint32max >> shift) == table_size - 1);
-  const char* ip_end = input + input_size;
-  const char* base_ip = ip;
-  // Bytes in [next_emit, ip) will be emitted as literal bytes.  Or
-  // [next_emit, ip_end) after the main loop.
-  const char* next_emit = ip;
-
-  const size_t kInputMarginBytes = 15;
-  if (PREDICT_TRUE(input_size >= kInputMarginBytes)) {
-    const char* ip_limit = input + input_size - kInputMarginBytes;
-
-    for (uint32 next_hash = Hash(++ip, shift); ; ) {
-      assert(next_emit < ip);
-      // The body of this loop calls EmitLiteral once and then EmitCopy one or
-      // more times.  (The exception is that when we're close to exhausting
-      // the input we goto emit_remainder.)
-      //
-      // In the first iteration of this loop we're just starting, so
-      // there's nothing to copy, so calling EmitLiteral once is
-      // necessary.  And we only start a new iteration when the
-      // current iteration has determined that a call to EmitLiteral will
-      // precede the next call to EmitCopy (if any).
-      //
-      // Step 1: Scan forward in the input looking for a 4-byte-long match.
-      // If we get close to exhausting the input then goto emit_remainder.
-      //
-      // Heuristic match skipping: If 32 bytes are scanned with no matches
-      // found, start looking only at every other byte. If 32 more bytes are
-      // scanned, look at every third byte, etc.. When a match is found,
-      // immediately go back to looking at every byte. This is a small loss
-      // (~5% performance, ~0.1% density) for compressible data due to more
-      // bookkeeping, but for non-compressible data (such as JPEG) it's a huge
-      // win since the compressor quickly "realizes" the data is incompressible
-      // and doesn't bother looking for matches everywhere.
-      //
-      // The "skip" variable keeps track of how many bytes there are since the
-      // last match; dividing it by 32 (ie. right-shifting by five) gives the
-      // number of bytes to move ahead for each iteration.
-      uint32 skip = 32;
-
-      const char* next_ip = ip;
-      const char* candidate;
-      do {
-        ip = next_ip;
-        uint32 hash = next_hash;
-        assert(hash == Hash(ip, shift));
-        uint32 bytes_between_hash_lookups = skip++ >> 5;
-        next_ip = ip + bytes_between_hash_lookups;
-        if (PREDICT_FALSE(next_ip > ip_limit)) {
-          goto emit_remainder;
-        }
-        next_hash = Hash(next_ip, shift);
-        candidate = base_ip + table[hash];
-        assert(candidate >= base_ip);
-        assert(candidate < ip);
-
-        table[hash] = ip - base_ip;
-      } while (PREDICT_TRUE(UNALIGNED_LOAD32(ip) !=
-                            UNALIGNED_LOAD32(candidate)));
-
-      // Step 2: A 4-byte match has been found.  We'll later see if more
-      // than 4 bytes match.  But, prior to the match, input
-      // bytes [next_emit, ip) are unmatched.  Emit them as "literal bytes."
-      assert(next_emit + 16 <= ip_end);
-      op = EmitLiteral(op, next_emit, ip - next_emit, true);
-
-      // Step 3: Call EmitCopy, and then see if another EmitCopy could
-      // be our next move.  Repeat until we find no match for the
-      // input immediately after what was consumed by the last EmitCopy call.
-      //
-      // If we exit this loop normally then we need to call EmitLiteral next,
-      // though we don't yet know how big the literal will be.  We handle that
-      // by proceeding to the next iteration of the main loop.  We also can exit
-      // this loop via goto if we get close to exhausting the input.
-      EightBytesReference input_bytes;
-      uint32 candidate_bytes = 0;
-
-      do {
-        // We have a 4-byte match at ip, and no need to emit any
-        // "literal bytes" prior to ip.
-        const char* base = ip;
-        int matched = 4 + FindMatchLength(candidate + 4, ip + 4, ip_end);
-        ip += matched;
-        size_t offset = base - candidate;
-        assert(0 == memcmp(base, candidate, matched));
-        op = EmitCopy(op, offset, matched);
-        // We could immediately start working at ip now, but to improve
-        // compression we first update table[Hash(ip - 1, ...)].
-        const char* insert_tail = ip - 1;
-        next_emit = ip;
-        if (PREDICT_FALSE(ip >= ip_limit)) {
-          goto emit_remainder;
-        }
-        input_bytes = GetEightBytesAt(insert_tail);
-        uint32 prev_hash = HashBytes(GetUint32AtOffset(input_bytes, 0), shift);
-        table[prev_hash] = ip - base_ip - 1;
-        uint32 cur_hash = HashBytes(GetUint32AtOffset(input_bytes, 1), shift);
-        candidate = base_ip + table[cur_hash];
-        candidate_bytes = UNALIGNED_LOAD32(candidate);
-        table[cur_hash] = ip - base_ip;
-      } while (GetUint32AtOffset(input_bytes, 1) == candidate_bytes);
-
-      next_hash = HashBytes(GetUint32AtOffset(input_bytes, 2), shift);
-      ++ip;
-    }
-  }
-
- emit_remainder:
-  // Emit the remaining bytes as a literal
-  if (next_emit < ip_end) {
-    op = EmitLiteral(op, next_emit, ip_end - next_emit, false);
-  }
-
-  return op;
-}
-}  // end namespace internal
-
-// Signature of output types needed by decompression code.
-// The decompression code is templatized on a type that obeys this
-// signature so that we do not pay virtual function call overhead in
-// the middle of a tight decompression loop.
-//
-// class DecompressionWriter {
-//  public:
-//   // Called before decompression
-//   void SetExpectedLength(size_t length);
-//
-//   // Called after decompression
-//   bool CheckLength() const;
-//
-//   // Called repeatedly during decompression
-//   bool Append(const char* ip, size_t length);
-//   bool AppendFromSelf(uint32 offset, size_t length);
-//
-//   // The difference between TryFastAppend and Append is that TryFastAppend
-//   // is allowed to read up to <available> bytes from the input buffer,
-//   // whereas Append is allowed to read <length>.
-//   //
-//   // Also, TryFastAppend is allowed to return false, declining the append,
-//   // without it being a fatal error -- just "return false" would be
-//   // a perfectly legal implementation of TryFastAppend. The intention
-//   // is for TryFastAppend to allow a fast path in the common case of
-//   // a small append.
-//   //
-//   // NOTE(user): TryFastAppend must always return decline (return false)
-//   // if <length> is 61 or more, as in this case the literal length is not
-//   // decoded fully. In practice, this should not be a big problem,
-//   // as it is unlikely that one would implement a fast path accepting
-//   // this much data.
-//   bool TryFastAppend(const char* ip, size_t available, size_t length);
-// };
-
-// -----------------------------------------------------------------------
-// Lookup table for decompression code.  Generated by ComputeTable() below.
-// -----------------------------------------------------------------------
-
-// Mapping from i in range [0,4] to a mask to extract the bottom 8*i bits
-static const uint32 wordmask[] = {
-  0u, 0xffu, 0xffffu, 0xffffffu, 0xffffffffu
-};
-
-// Data stored per entry in lookup table:
-//      Range   Bits-used       Description
-//      ------------------------------------
-//      1..64   0..7            Literal/copy length encoded in opcode byte
-//      0..7    8..10           Copy offset encoded in opcode byte / 256
-//      0..4    11..13          Extra bytes after opcode
-//
-// We use eight bits for the length even though 7 would have sufficed
-// because of efficiency reasons:
-//      (1) Extracting a byte is faster than a bit-field
-//      (2) It properly aligns copy offset so we do not need a <<8
-static const uint16 char_table[256] = {
-  0x0001, 0x0804, 0x1001, 0x2001, 0x0002, 0x0805, 0x1002, 0x2002,
-  0x0003, 0x0806, 0x1003, 0x2003, 0x0004, 0x0807, 0x1004, 0x2004,
-  0x0005, 0x0808, 0x1005, 0x2005, 0x0006, 0x0809, 0x1006, 0x2006,
-  0x0007, 0x080a, 0x1007, 0x2007, 0x0008, 0x080b, 0x1008, 0x2008,
-  0x0009, 0x0904, 0x1009, 0x2009, 0x000a, 0x0905, 0x100a, 0x200a,
-  0x000b, 0x0906, 0x100b, 0x200b, 0x000c, 0x0907, 0x100c, 0x200c,
-  0x000d, 0x0908, 0x100d, 0x200d, 0x000e, 0x0909, 0x100e, 0x200e,
-  0x000f, 0x090a, 0x100f, 0x200f, 0x0010, 0x090b, 0x1010, 0x2010,
-  0x0011, 0x0a04, 0x1011, 0x2011, 0x0012, 0x0a05, 0x1012, 0x2012,
-  0x0013, 0x0a06, 0x1013, 0x2013, 0x0014, 0x0a07, 0x1014, 0x2014,
-  0x0015, 0x0a08, 0x1015, 0x2015, 0x0016, 0x0a09, 0x1016, 0x2016,
-  0x0017, 0x0a0a, 0x1017, 0x2017, 0x0018, 0x0a0b, 0x1018, 0x2018,
-  0x0019, 0x0b04, 0x1019, 0x2019, 0x001a, 0x0b05, 0x101a, 0x201a,
-  0x001b, 0x0b06, 0x101b, 0x201b, 0x001c, 0x0b07, 0x101c, 0x201c,
-  0x001d, 0x0b08, 0x101d, 0x201d, 0x001e, 0x0b09, 0x101e, 0x201e,
-  0x001f, 0x0b0a, 0x101f, 0x201f, 0x0020, 0x0b0b, 0x1020, 0x2020,
-  0x0021, 0x0c04, 0x1021, 0x2021, 0x0022, 0x0c05, 0x1022, 0x2022,
-  0x0023, 0x0c06, 0x1023, 0x2023, 0x0024, 0x0c07, 0x1024, 0x2024,
-  0x0025, 0x0c08, 0x1025, 0x2025, 0x0026, 0x0c09, 0x1026, 0x2026,
-  0x0027, 0x0c0a, 0x1027, 0x2027, 0x0028, 0x0c0b, 0x1028, 0x2028,
-  0x0029, 0x0d04, 0x1029, 0x2029, 0x002a, 0x0d05, 0x102a, 0x202a,
-  0x002b, 0x0d06, 0x102b, 0x202b, 0x002c, 0x0d07, 0x102c, 0x202c,
-  0x002d, 0x0d08, 0x102d, 0x202d, 0x002e, 0x0d09, 0x102e, 0x202e,
-  0x002f, 0x0d0a, 0x102f, 0x202f, 0x0030, 0x0d0b, 0x1030, 0x2030,
-  0x0031, 0x0e04, 0x1031, 0x2031, 0x0032, 0x0e05, 0x1032, 0x2032,
-  0x0033, 0x0e06, 0x1033, 0x2033, 0x0034, 0x0e07, 0x1034, 0x2034,
-  0x0035, 0x0e08, 0x1035, 0x2035, 0x0036, 0x0e09, 0x1036, 0x2036,
-  0x0037, 0x0e0a, 0x1037, 0x2037, 0x0038, 0x0e0b, 0x1038, 0x2038,
-  0x0039, 0x0f04, 0x1039, 0x2039, 0x003a, 0x0f05, 0x103a, 0x203a,
-  0x003b, 0x0f06, 0x103b, 0x203b, 0x003c, 0x0f07, 0x103c, 0x203c,
-  0x0801, 0x0f08, 0x103d, 0x203d, 0x1001, 0x0f09, 0x103e, 0x203e,
-  0x1801, 0x0f0a, 0x103f, 0x203f, 0x2001, 0x0f0b, 0x1040, 0x2040
-};
-
-// In debug mode, allow optional computation of the table at startup.
-// Also, check that the decompression table is correct.
-#ifndef NDEBUG
-DEFINE_bool(snappy_dump_decompression_table, false,
-            "If true, we print the decompression table at startup.");
-
-static uint16 MakeEntry(unsigned int extra,
-                        unsigned int len,
-                        unsigned int copy_offset) {
-  // Check that all of the fields fit within the allocated space
-  assert(extra       == (extra & 0x7));          // At most 3 bits
-  assert(copy_offset == (copy_offset & 0x7));    // At most 3 bits
-  assert(len         == (len & 0x7f));           // At most 7 bits
-  return len | (copy_offset << 8) | (extra << 11);
-}
-
-static void ComputeTable() {
-  uint16 dst[256];
-
-  // Place invalid entries in all places to detect missing initialization
-  int assigned = 0;
-  for (int i = 0; i < 256; i++) {
-    dst[i] = 0xffff;
-  }
-
-  // Small LITERAL entries.  We store (len-1) in the top 6 bits.
-  for (unsigned int len = 1; len <= 60; len++) {
-    dst[LITERAL | ((len-1) << 2)] = MakeEntry(0, len, 0);
-    assigned++;
-  }
-
-  // Large LITERAL entries.  We use 60..63 in the high 6 bits to
-  // encode the number of bytes of length info that follow the opcode.
-  for (unsigned int extra_bytes = 1; extra_bytes <= 4; extra_bytes++) {
-    // We set the length field in the lookup table to 1 because extra
-    // bytes encode len-1.
-    dst[LITERAL | ((extra_bytes+59) << 2)] = MakeEntry(extra_bytes, 1, 0);
-    assigned++;
-  }
-
-  // COPY_1_BYTE_OFFSET.
-  //
-  // The tag byte in the compressed data stores len-4 in 3 bits, and
-  // offset/256 in 5 bits.  offset%256 is stored in the next byte.
-  //
-  // This format is used for length in range [4..11] and offset in
-  // range [0..2047]
-  for (unsigned int len = 4; len < 12; len++) {
-    for (unsigned int offset = 0; offset < 2048; offset += 256) {
-      dst[COPY_1_BYTE_OFFSET | ((len-4)<<2) | ((offset>>8)<<5)] =
-        MakeEntry(1, len, offset>>8);
-      assigned++;
-    }
-  }
-
-  // COPY_2_BYTE_OFFSET.
-  // Tag contains len-1 in top 6 bits, and offset in next two bytes.
-  for (unsigned int len = 1; len <= 64; len++) {
-    dst[COPY_2_BYTE_OFFSET | ((len-1)<<2)] = MakeEntry(2, len, 0);
-    assigned++;
-  }
-
-  // COPY_4_BYTE_OFFSET.
-  // Tag contents len-1 in top 6 bits, and offset in next four bytes.
-  for (unsigned int len = 1; len <= 64; len++) {
-    dst[COPY_4_BYTE_OFFSET | ((len-1)<<2)] = MakeEntry(4, len, 0);
-    assigned++;
-  }
-
-  // Check that each entry was initialized exactly once.
-  if (assigned != 256) {
-    fprintf(stderr, "ComputeTable: assigned only %d of 256\n", assigned);
-    abort();
-  }
-  for (int i = 0; i < 256; i++) {
-    if (dst[i] == 0xffff) {
-      fprintf(stderr, "ComputeTable: did not assign byte %d\n", i);
-      abort();
-    }
-  }
-
-  if (FLAGS_snappy_dump_decompression_table) {
-    printf("static const uint16 char_table[256] = {\n  ");
-    for (int i = 0; i < 256; i++) {
-      printf("0x%04x%s",
-             dst[i],
-             ((i == 255) ? "\n" : (((i%8) == 7) ? ",\n  " : ", ")));
-    }
-    printf("};\n");
-  }
-
-  // Check that computed table matched recorded table
-  for (int i = 0; i < 256; i++) {
-    if (dst[i] != char_table[i]) {
-      fprintf(stderr, "ComputeTable: byte %d: computed (%x), expect (%x)\n",
-              i, static_cast<int>(dst[i]), static_cast<int>(char_table[i]));
-      abort();
-    }
-  }
-}
-#endif /* !NDEBUG */
-
-// Helper class for decompression
-class SnappyDecompressor {
- private:
-  Source*       reader_;         // Underlying source of bytes to decompress
-  const char*   ip_;             // Points to next buffered byte
-  const char*   ip_limit_;       // Points just past buffered bytes
-  uint32        peeked_;         // Bytes peeked from reader (need to skip)
-  bool          eof_;            // Hit end of input without an error?
-  char          scratch_[5];     // Temporary buffer for PeekFast() boundaries
-
-  // Ensure that all of the tag metadata for the next tag is available
-  // in [ip_..ip_limit_-1].  Also ensures that [ip,ip+4] is readable even
-  // if (ip_limit_ - ip_ < 5).
-  //
-  // Returns true on success, false on error or end of input.
-  bool RefillTag();
-
- public:
-  explicit SnappyDecompressor(Source* reader)
-      : reader_(reader),
-        ip_(NULL),
-        ip_limit_(NULL),
-        peeked_(0),
-        eof_(false) {
-  }
-
-  ~SnappyDecompressor() {
-    // Advance past any bytes we peeked at from the reader
-    reader_->Skip(peeked_);
-  }
-
-  // Returns true iff we have hit the end of the input without an error.
-  bool eof() const {
-    return eof_;
-  }
-
-  // Read the uncompressed length stored at the start of the compressed data.
-  // On succcess, stores the length in *result and returns true.
-  // On failure, returns false.
-  bool ReadUncompressedLength(uint32* result) {
-    assert(ip_ == NULL);       // Must not have read anything yet
-    // Length is encoded in 1..5 bytes
-    *result = 0;
-    uint32 shift = 0;
-    while (true) {
-      if (shift >= 32) return false;
-      size_t n;
-      const char* ip = reader_->Peek(&n);
-      if (n == 0) return false;
-      const unsigned char c = *(reinterpret_cast<const unsigned char*>(ip));
-      reader_->Skip(1);
-      *result |= static_cast<uint32>(c & 0x7f) << shift;
-      if (c < 128) {
-        break;
-      }
-      shift += 7;
-    }
-    return true;
-  }
-
-  // Process the next item found in the input.
-  // Returns true if successful, false on error or end of input.
-  template <class Writer>
-  void DecompressAllTags(Writer* writer) {
-    const char* ip = ip_;
-
-    // We could have put this refill fragment only at the beginning of the loop.
-    // However, duplicating it at the end of each branch gives the compiler more
-    // scope to optimize the <ip_limit_ - ip> expression based on the local
-    // context, which overall increases speed.
-    #define MAYBE_REFILL() \
-        if (ip_limit_ - ip < 5) { \
-          ip_ = ip; \
-          if (!RefillTag()) return; \
-          ip = ip_; \
-        }
-
-    MAYBE_REFILL();
-    for ( ;; ) {
-      const unsigned char c = *(reinterpret_cast<const unsigned char*>(ip++));
-
-      if ((c & 0x3) == LITERAL) {
-        size_t literal_length = (c >> 2) + 1u;
-        if (writer->TryFastAppend(ip, ip_limit_ - ip, literal_length)) {
-          assert(literal_length < 61);
-          ip += literal_length;
-          MAYBE_REFILL();
-          continue;
-        }
-        if (PREDICT_FALSE(literal_length >= 61)) {
-          // Long literal.
-          const size_t literal_length_length = literal_length - 60;
-          literal_length =
-              (LittleEndian::Load32(ip) & wordmask[literal_length_length]) + 1;
-          ip += literal_length_length;
-        }
-
-        size_t avail = ip_limit_ - ip;
-        while (avail < literal_length) {
-          if (!writer->Append(ip, avail)) return;
-          literal_length -= avail;
-          reader_->Skip(peeked_);
-          size_t n;
-          ip = reader_->Peek(&n);
-          avail = n;
-          peeked_ = avail;
-          if (avail == 0) return;  // Premature end of input
-          ip_limit_ = ip + avail;
-        }
-        if (!writer->Append(ip, literal_length)) {
-          return;
-        }
-        ip += literal_length;
-        MAYBE_REFILL();
-      } else {
-        const uint32 entry = char_table[c];
-        const uint32 trailer = LittleEndian::Load32(ip) & wordmask[entry >> 11];
-        const uint32 length = entry & 0xff;
-        ip += entry >> 11;
-
-        // copy_offset/256 is encoded in bits 8..10.  By just fetching
-        // those bits, we get copy_offset (since the bit-field starts at
-        // bit 8).
-        const uint32 copy_offset = entry & 0x700;
-        if (!writer->AppendFromSelf(copy_offset + trailer, length)) {
-          return;
-        }
-        MAYBE_REFILL();
-      }
-    }
-
-#undef MAYBE_REFILL
-  }
-};
-
-bool SnappyDecompressor::RefillTag() {
-  const char* ip = ip_;
-  if (ip == ip_limit_) {
-    // Fetch a new fragment from the reader
-    reader_->Skip(peeked_);   // All peeked bytes are used up
-    size_t n;
-    ip = reader_->Peek(&n);
-    peeked_ = n;
-    if (n == 0) {
-      eof_ = true;
-      return false;
-    }
-    ip_limit_ = ip + n;
-  }
-
-  // Read the tag character
-  assert(ip < ip_limit_);
-  const unsigned char c = *(reinterpret_cast<const unsigned char*>(ip));
-  const uint32 entry = char_table[c];
-  const uint32 needed = (entry >> 11) + 1;  // +1 byte for 'c'
-  assert(needed <= sizeof(scratch_));
-
-  // Read more bytes from reader if needed
-  uint32 nbuf = ip_limit_ - ip;
-  if (nbuf < needed) {
-    // Stitch together bytes from ip and reader to form the word
-    // contents.  We store the needed bytes in "scratch_".  They
-    // will be consumed immediately by the caller since we do not
-    // read more than we need.
-    memmove(scratch_, ip, nbuf);
-    reader_->Skip(peeked_);  // All peeked bytes are used up
-    peeked_ = 0;
-    while (nbuf < needed) {
-      size_t length;
-      const char* src = reader_->Peek(&length);
-      if (length == 0) return false;
-      uint32 to_add = min<uint32>(needed - nbuf, length);
-      memcpy(scratch_ + nbuf, src, to_add);
-      nbuf += to_add;
-      reader_->Skip(to_add);
-    }
-    assert(nbuf == needed);
-    ip_ = scratch_;
-    ip_limit_ = scratch_ + needed;
-  } else if (nbuf < 5) {
-    // Have enough bytes, but move into scratch_ so that we do not
-    // read past end of input
-    memmove(scratch_, ip, nbuf);
-    reader_->Skip(peeked_);  // All peeked bytes are used up
-    peeked_ = 0;
-    ip_ = scratch_;
-    ip_limit_ = scratch_ + nbuf;
-  } else {
-    // Pass pointer to buffer returned by reader_.
-    ip_ = ip;
-  }
-  return true;
-}
-
-template <typename Writer>
-static bool InternalUncompress(Source* r,
-                               Writer* writer,
-                               uint32 max_len) {
-  // Read the uncompressed length from the front of the compressed input
-  SnappyDecompressor decompressor(r);
-  uint32 uncompressed_len = 0;
-  if (!decompressor.ReadUncompressedLength(&uncompressed_len)) return false;
-  return InternalUncompressAllTags(
-      &decompressor, writer, uncompressed_len, max_len);
-}
-
-template <typename Writer>
-static bool InternalUncompressAllTags(SnappyDecompressor* decompressor,
-                                      Writer* writer,
-                                      uint32 uncompressed_len,
-                                      uint32 max_len) {
-  // Protect against possible DoS attack
-  if (static_cast<uint64>(uncompressed_len) > max_len) {
-    return false;
-  }
-
-  writer->SetExpectedLength(uncompressed_len);
-
-  // Process the entire input
-  decompressor->DecompressAllTags(writer);
-  return (decompressor->eof() && writer->CheckLength());
-}
-
-bool GetUncompressedLength(Source* source, uint32* result) {
-  SnappyDecompressor decompressor(source);
-  return decompressor.ReadUncompressedLength(result);
-}
-
-size_t Compress(Source* reader, Sink* writer) {
-  size_t written = 0;
-  size_t N = reader->Available();
-  char ulength[Varint::kMax32];
-  char* p = Varint::Encode32(ulength, N);
-  writer->Append(ulength, p-ulength);
-  written += (p - ulength);
-
-  internal::WorkingMemory wmem;
-  char* scratch = NULL;
-  char* scratch_output = NULL;
-
-  while (N > 0) {
-    // Get next block to compress (without copying if possible)
-    size_t fragment_size;
-    const char* fragment = reader->Peek(&fragment_size);
-    assert(fragment_size != 0);  // premature end of input
-    const size_t num_to_read = min(N, kBlockSize);
-    size_t bytes_read = fragment_size;
-
-    size_t pending_advance = 0;
-    if (bytes_read >= num_to_read) {
-      // Buffer returned by reader is large enough
-      pending_advance = num_to_read;
-      fragment_size = num_to_read;
-    } else {
-      // Read into scratch buffer
-      if (scratch == NULL) {
-        // If this is the last iteration, we want to allocate N bytes
-        // of space, otherwise the max possible kBlockSize space.
-        // num_to_read contains exactly the correct value
-        scratch = new char[num_to_read];
-      }
-      memcpy(scratch, fragment, bytes_read);
-      reader->Skip(bytes_read);
-
-      while (bytes_read < num_to_read) {
-        fragment = reader->Peek(&fragment_size);
-        size_t n = min<size_t>(fragment_size, num_to_read - bytes_read);
-        memcpy(scratch + bytes_read, fragment, n);
-        bytes_read += n;
-        reader->Skip(n);
-      }
-      assert(bytes_read == num_to_read);
-      fragment = scratch;
-      fragment_size = num_to_read;
-    }
-    assert(fragment_size == num_to_read);
-
-    // Get encoding table for compression
-    int table_size;
-    uint16* table = wmem.GetHashTable(num_to_read, &table_size);
-
-    // Compress input_fragment and append to dest
-    const int max_output = MaxCompressedLength(num_to_read);
-
-    // Need a scratch buffer for the output, in case the byte sink doesn't
-    // have room for us directly.
-    if (scratch_output == NULL) {
-      scratch_output = new char[max_output];
-    } else {
-      // Since we encode kBlockSize regions followed by a region
-      // which is <= kBlockSize in length, a previously allocated
-      // scratch_output[] region is big enough for this iteration.
-    }
-    char* dest = writer->GetAppendBuffer(max_output, scratch_output);
-    char* end = internal::CompressFragment(fragment, fragment_size,
-                                           dest, table, table_size);
-    writer->Append(dest, end - dest);
-    written += (end - dest);
-
-    N -= num_to_read;
-    reader->Skip(pending_advance);
-  }
-
-  delete[] scratch;
-  delete[] scratch_output;
-
-  return written;
-}
-
-// -----------------------------------------------------------------------
-// Flat array interfaces
-// -----------------------------------------------------------------------
-
-// A type that writes to a flat array.
-// Note that this is not a "ByteSink", but a type that matches the
-// Writer template argument to SnappyDecompressor::DecompressAllTags().
-class SnappyArrayWriter {
- private:
-  char* base_;
-  char* op_;
-  char* op_limit_;
-
- public:
-  inline explicit SnappyArrayWriter(char* dst)
-      : base_(dst),
-        op_(dst) {
-  }
-
-  inline void SetExpectedLength(size_t len) {
-    op_limit_ = op_ + len;
-  }
-
-  inline bool CheckLength() const {
-    return op_ == op_limit_;
-  }
-
-  inline bool Append(const char* ip, size_t len) {
-    char* op = op_;
-    const size_t space_left = op_limit_ - op;
-    if (space_left < len) {
-      return false;
-    }
-    memcpy(op, ip, len);
-    op_ = op + len;
-    return true;
-  }
-
-  inline bool TryFastAppend(const char* ip, size_t available, size_t len) {
-    char* op = op_;
-    const size_t space_left = op_limit_ - op;
-    if (len <= 16 && available >= 16 && space_left >= 16) {
-      // Fast path, used for the majority (about 95%) of invocations.
-      UnalignedCopy64(ip, op);
-      UnalignedCopy64(ip + 8, op + 8);
-      op_ = op + len;
-      return true;
-    } else {
-      return false;
-    }
-  }
-
-  inline bool AppendFromSelf(size_t offset, size_t len) {
-    char* op = op_;
-    const size_t space_left = op_limit_ - op;
-
-    if (op - base_ <= offset - 1u) {  // -1u catches offset==0
-      return false;
-    }
-    if (len <= 16 && offset >= 8 && space_left >= 16) {
-      // Fast path, used for the majority (70-80%) of dynamic invocations.
-      UnalignedCopy64(op - offset, op);
-      UnalignedCopy64(op - offset + 8, op + 8);
-    } else {
-      if (space_left >= len + kMaxIncrementCopyOverflow) {
-        IncrementalCopyFastPath(op - offset, op, len);
-      } else {
-        if (space_left < len) {
-          return false;
-        }
-        IncrementalCopy(op - offset, op, len);
-      }
-    }
-
-    op_ = op + len;
-    return true;
-  }
-};
-
-bool RawUncompress(const char* compressed, size_t n, char* uncompressed) {
-  ByteArraySource reader(compressed, n);
-  return RawUncompress(&reader, uncompressed);
-}
-
-bool RawUncompress(Source* compressed, char* uncompressed) {
-  SnappyArrayWriter output(uncompressed);
-  return InternalUncompress(compressed, &output, kuint32max);
-}
-
-bool Uncompress(const char* compressed, size_t n, string* uncompressed) {
-  size_t ulength;
-  if (!GetUncompressedLength(compressed, n, &ulength)) {
-    return false;
-  }
-  // Protect against possible DoS attack
-  if ((static_cast<uint64>(ulength) + uncompressed->size()) >
-      uncompressed->max_size()) {
-    return false;
-  }
-  STLStringResizeUninitialized(uncompressed, ulength);
-  return RawUncompress(compressed, n, string_as_array(uncompressed));
-}
-
-
-// A Writer that drops everything on the floor and just does validation
-class SnappyDecompressionValidator {
- private:
-  size_t expected_;
-  size_t produced_;
-
- public:
-  inline SnappyDecompressionValidator() : produced_(0) { }
-  inline void SetExpectedLength(size_t len) {
-    expected_ = len;
-  }
-  inline bool CheckLength() const {
-    return expected_ == produced_;
-  }
-  inline bool Append(const char* ip, size_t len) {
-    produced_ += len;
-    return produced_ <= expected_;
-  }
-  inline bool TryFastAppend(const char* ip, size_t available, size_t length) {
-    return false;
-  }
-  inline bool AppendFromSelf(size_t offset, size_t len) {
-    if (produced_ <= offset - 1u) return false;  // -1u catches offset==0
-    produced_ += len;
-    return produced_ <= expected_;
-  }
-};
-
-bool IsValidCompressedBuffer(const char* compressed, size_t n) {
-  ByteArraySource reader(compressed, n);
-  SnappyDecompressionValidator writer;
-  return InternalUncompress(&reader, &writer, kuint32max);
-}
-
-void RawCompress(const char* input,
-                 size_t input_length,
-                 char* compressed,
-                 size_t* compressed_length) {
-  ByteArraySource reader(input, input_length);
-  UncheckedByteArraySink writer(compressed);
-  Compress(&reader, &writer);
-
-  // Compute how many bytes were added
-  *compressed_length = (writer.CurrentDestination() - compressed);
-}
-
-size_t Compress(const char* input, size_t input_length, string* compressed) {
-  // Pre-grow the buffer to the max length of the compressed output
-  compressed->resize(MaxCompressedLength(input_length));
-
-  size_t compressed_length;
-  RawCompress(input, input_length, string_as_array(compressed),
-              &compressed_length);
-  compressed->resize(compressed_length);
-  return compressed_length;
-}
-
-
-} // end namespace snappy
-
diff --git a/main/snappy/snappy.h b/main/snappy/snappy.h
deleted file mode 100644
index 03ef6ce5..00000000
--- a/main/snappy/snappy.h
+++ /dev/null
@@ -1,163 +0,0 @@
-// Copyright 2005 and onwards Google Inc.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// A light-weight compression algorithm.  It is designed for speed of
-// compression and decompression, rather than for the utmost in space
-// savings.
-//
-// For getting better compression ratios when you are compressing data
-// with long repeated sequences or compressing data that is similar to
-// other data, while still compressing fast, you might look at first
-// using BMDiff and then compressing the output of BMDiff with
-// Snappy.
-
-#ifndef UTIL_SNAPPY_SNAPPY_H__
-#define UTIL_SNAPPY_SNAPPY_H__
-
-#include <stddef.h>
-#include <string>
-
-#include "snappy-stubs-public.h"
-
-namespace snappy {
-  class Source;
-  class Sink;
-
-  // ------------------------------------------------------------------------
-  // Generic compression/decompression routines.
-  // ------------------------------------------------------------------------
-
-  // Compress the bytes read from "*source" and append to "*sink". Return the
-  // number of bytes written.
-  size_t Compress(Source* source, Sink* sink);
-
-  // Find the uncompressed length of the given stream, as given by the header.
-  // Note that the true length could deviate from this; the stream could e.g.
-  // be truncated.
-  //
-  // Also note that this leaves "*source" in a state that is unsuitable for
-  // further operations, such as RawUncompress(). You will need to rewind
-  // or recreate the source yourself before attempting any further calls.
-  bool GetUncompressedLength(Source* source, uint32* result);
-
-  // ------------------------------------------------------------------------
-  // Higher-level string based routines (should be sufficient for most users)
-  // ------------------------------------------------------------------------
-
-  // Sets "*output" to the compressed version of "input[0,input_length-1]".
-  // Original contents of *output are lost.
-  //
-  // REQUIRES: "input[]" is not an alias of "*output".
-  size_t Compress(const char* input, size_t input_length, string* output);
-
-  // Decompresses "compressed[0,compressed_length-1]" to "*uncompressed".
-  // Original contents of "*uncompressed" are lost.
-  //
-  // REQUIRES: "compressed[]" is not an alias of "*uncompressed".
-  //
-  // returns false if the message is corrupted and could not be decompressed
-  bool Uncompress(const char* compressed, size_t compressed_length,
-                  string* uncompressed);
-
-
-  // ------------------------------------------------------------------------
-  // Lower-level character array based routines.  May be useful for
-  // efficiency reasons in certain circumstances.
-  // ------------------------------------------------------------------------
-
-  // REQUIRES: "compressed" must point to an area of memory that is at
-  // least "MaxCompressedLength(input_length)" bytes in length.
-  //
-  // Takes the data stored in "input[0..input_length]" and stores
-  // it in the array pointed to by "compressed".
-  //
-  // "*compressed_length" is set to the length of the compressed output.
-  //
-  // Example:
-  //    char* output = new char[snappy::MaxCompressedLength(input_length)];
-  //    size_t output_length;
-  //    RawCompress(input, input_length, output, &output_length);
-  //    ... Process(output, output_length) ...
-  //    delete [] output;
-  void RawCompress(const char* input,
-                   size_t input_length,
-                   char* compressed,
-                   size_t* compressed_length);
-
-  // Given data in "compressed[0..compressed_length-1]" generated by
-  // calling the Snappy::Compress routine, this routine
-  // stores the uncompressed data to
-  //    uncompressed[0..GetUncompressedLength(compressed)-1]
-  // returns false if the message is corrupted and could not be decrypted
-  bool RawUncompress(const char* compressed, size_t compressed_length,
-                     char* uncompressed);
-
-  // Given data from the byte source 'compressed' generated by calling
-  // the Snappy::Compress routine, this routine stores the uncompressed
-  // data to
-  //    uncompressed[0..GetUncompressedLength(compressed,compressed_length)-1]
-  // returns false if the message is corrupted and could not be decrypted
-  bool RawUncompress(Source* compressed, char* uncompressed);
-
-  // Returns the maximal size of the compressed representation of
-  // input data that is "source_bytes" bytes in length;
-  size_t MaxCompressedLength(size_t source_bytes);
-
-  // REQUIRES: "compressed[]" was produced by RawCompress() or Compress()
-  // Returns true and stores the length of the uncompressed data in
-  // *result normally.  Returns false on parsing error.
-  // This operation takes O(1) time.
-  bool GetUncompressedLength(const char* compressed, size_t compressed_length,
-                             size_t* result);
-
-  // Returns true iff the contents of "compressed[]" can be uncompressed
-  // successfully.  Does not return the uncompressed data.  Takes
-  // time proportional to compressed_length, but is usually at least
-  // a factor of four faster than actual decompression.
-  bool IsValidCompressedBuffer(const char* compressed,
-                               size_t compressed_length);
-
-  // The size of a compression block. Note that many parts of the compression
-  // code assumes that kBlockSize <= 65536; in particular, the hash table
-  // can only store 16-bit offsets, and EmitCopy() also assumes the offset
-  // is 65535 bytes or less. Note also that if you change this, it will
-  // affect the framing format (see framing_format.txt).
-  //
-  // Note that there might be older data around that is compressed with larger
-  // block sizes, so the decompression code should not rely on the
-  // non-existence of long backreferences.
-  static const int kBlockLog = 16;
-  static const size_t kBlockSize = 1 << kBlockLog;
-
-  static const int kMaxHashTableBits = 14;
-  static const size_t kMaxHashTableSize = 1 << kMaxHashTableBits;
-
-}  // end namespace snappy
-
-
-#endif  // UTIL_SNAPPY_SNAPPY_H__
diff --git a/main/snappy/snappy_unittest.cc b/main/snappy/snappy_unittest.cc
deleted file mode 100644
index 59c108f4..00000000
--- a/main/snappy/snappy_unittest.cc
+++ /dev/null
@@ -1,1164 +0,0 @@
-// Copyright 2005 and onwards Google Inc.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <math.h>
-#include <stdlib.h>
-
-
-#include <algorithm>
-#include <string>
-#include <vector>
-
-#include "snappy.h"
-#include "snappy-internal.h"
-#include "snappy-test.h"
-#include "snappy-sinksource.h"
-
-DEFINE_int32(start_len, -1,
-             "Starting prefix size for testing (-1: just full file contents)");
-DEFINE_int32(end_len, -1,
-             "Starting prefix size for testing (-1: just full file contents)");
-DEFINE_int32(bytes, 10485760,
-             "How many bytes to compress/uncompress per file for timing");
-
-DEFINE_bool(zlib, false,
-            "Run zlib compression (http://www.zlib.net)");
-DEFINE_bool(lzo, false,
-            "Run LZO compression (http://www.oberhumer.com/opensource/lzo/)");
-DEFINE_bool(quicklz, false,
-            "Run quickLZ compression (http://www.quicklz.com/)");
-DEFINE_bool(liblzf, false,
-            "Run libLZF compression "
-            "(http://www.goof.com/pcg/marc/liblzf.html)");
-DEFINE_bool(fastlz, false,
-            "Run FastLZ compression (http://www.fastlz.org/");
-DEFINE_bool(snappy, true, "Run snappy compression");
-
-
-DEFINE_bool(write_compressed, false,
-            "Write compressed versions of each file to <file>.comp");
-DEFINE_bool(write_uncompressed, false,
-            "Write uncompressed versions of each file to <file>.uncomp");
-
-namespace snappy {
-
-
-#ifdef HAVE_FUNC_MMAP
-
-// To test against code that reads beyond its input, this class copies a
-// string to a newly allocated group of pages, the last of which
-// is made unreadable via mprotect. Note that we need to allocate the
-// memory with mmap(), as POSIX allows mprotect() only on memory allocated
-// with mmap(), and some malloc/posix_memalign implementations expect to
-// be able to read previously allocated memory while doing heap allocations.
-class DataEndingAtUnreadablePage {
- public:
-  explicit DataEndingAtUnreadablePage(const string& s) {
-    const size_t page_size = getpagesize();
-    const size_t size = s.size();
-    // Round up space for string to a multiple of page_size.
-    size_t space_for_string = (size + page_size - 1) & ~(page_size - 1);
-    alloc_size_ = space_for_string + page_size;
-    mem_ = mmap(NULL, alloc_size_,
-                PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-    CHECK_NE(MAP_FAILED, mem_);
-    protected_page_ = reinterpret_cast<char*>(mem_) + space_for_string;
-    char* dst = protected_page_ - size;
-    memcpy(dst, s.data(), size);
-    data_ = dst;
-    size_ = size;
-    // Make guard page unreadable.
-    CHECK_EQ(0, mprotect(protected_page_, page_size, PROT_NONE));
-  }
-
-  ~DataEndingAtUnreadablePage() {
-    // Undo the mprotect.
-    CHECK_EQ(0, mprotect(protected_page_, getpagesize(), PROT_READ|PROT_WRITE));
-    CHECK_EQ(0, munmap(mem_, alloc_size_));
-  }
-
-  const char* data() const { return data_; }
-  size_t size() const { return size_; }
-
- private:
-  size_t alloc_size_;
-  void* mem_;
-  char* protected_page_;
-  const char* data_;
-  size_t size_;
-};
-
-#else  // HAVE_FUNC_MMAP
-
-// Fallback for systems without mmap.
-typedef string DataEndingAtUnreadablePage;
-
-#endif
-
-enum CompressorType {
-  ZLIB, LZO, LIBLZF, QUICKLZ, FASTLZ, SNAPPY
-};
-
-const char* names[] = {
-  "ZLIB", "LZO", "LIBLZF", "QUICKLZ", "FASTLZ", "SNAPPY"
-};
-
-static size_t MinimumRequiredOutputSpace(size_t input_size,
-                                         CompressorType comp) {
-  switch (comp) {
-#ifdef ZLIB_VERSION
-    case ZLIB:
-      return ZLib::MinCompressbufSize(input_size);
-#endif  // ZLIB_VERSION
-
-#ifdef LZO_VERSION
-    case LZO:
-      return input_size + input_size/64 + 16 + 3;
-#endif  // LZO_VERSION
-
-#ifdef LZF_VERSION
-    case LIBLZF:
-      return input_size;
-#endif  // LZF_VERSION
-
-#ifdef QLZ_VERSION_MAJOR
-    case QUICKLZ:
-      return input_size + 36000;  // 36000 is used for scratch.
-#endif  // QLZ_VERSION_MAJOR
-
-#ifdef FASTLZ_VERSION
-    case FASTLZ:
-      return max(static_cast<int>(ceil(input_size * 1.05)), 66);
-#endif  // FASTLZ_VERSION
-
-    case SNAPPY:
-      return snappy::MaxCompressedLength(input_size);
-
-    default:
-      LOG(FATAL) << "Unknown compression type number " << comp;
-  }
-}
-
-// Returns true if we successfully compressed, false otherwise.
-//
-// If compressed_is_preallocated is set, do not resize the compressed buffer.
-// This is typically what you want for a benchmark, in order to not spend
-// time in the memory allocator. If you do set this flag, however,
-// "compressed" must be preinitialized to at least MinCompressbufSize(comp)
-// number of bytes, and may contain junk bytes at the end after return.
-static bool Compress(const char* input, size_t input_size, CompressorType comp,
-                     string* compressed, bool compressed_is_preallocated) {
-  if (!compressed_is_preallocated) {
-    compressed->resize(MinimumRequiredOutputSpace(input_size, comp));
-  }
-
-  switch (comp) {
-#ifdef ZLIB_VERSION
-    case ZLIB: {
-      ZLib zlib;
-      uLongf destlen = compressed->size();
-      int ret = zlib.Compress(
-          reinterpret_cast<Bytef*>(string_as_array(compressed)),
-          &destlen,
-          reinterpret_cast<const Bytef*>(input),
-          input_size);
-      CHECK_EQ(Z_OK, ret);
-      if (!compressed_is_preallocated) {
-        compressed->resize(destlen);
-      }
-      return true;
-    }
-#endif  // ZLIB_VERSION
-
-#ifdef LZO_VERSION
-    case LZO: {
-      unsigned char* mem = new unsigned char[LZO1X_1_15_MEM_COMPRESS];
-      lzo_uint destlen;
-      int ret = lzo1x_1_15_compress(
-          reinterpret_cast<const uint8*>(input),
-          input_size,
-          reinterpret_cast<uint8*>(string_as_array(compressed)),
-          &destlen,
-          mem);
-      CHECK_EQ(LZO_E_OK, ret);
-      delete[] mem;
-      if (!compressed_is_preallocated) {
-        compressed->resize(destlen);
-      }
-      break;
-    }
-#endif  // LZO_VERSION
-
-#ifdef LZF_VERSION
-    case LIBLZF: {
-      int destlen = lzf_compress(input,
-                                 input_size,
-                                 string_as_array(compressed),
-                                 input_size);
-      if (destlen == 0) {
-        // lzf *can* cause lots of blowup when compressing, so they
-        // recommend to limit outsize to insize, and just not compress
-        // if it's bigger.  Ideally, we'd just swap input and output.
-        compressed->assign(input, input_size);
-        destlen = input_size;
-      }
-      if (!compressed_is_preallocated) {
-        compressed->resize(destlen);
-      }
-      break;
-    }
-#endif  // LZF_VERSION
-
-#ifdef QLZ_VERSION_MAJOR
-    case QUICKLZ: {
-      qlz_state_compress *state_compress = new qlz_state_compress;
-      int destlen = qlz_compress(input,
-                                 string_as_array(compressed),
-                                 input_size,
-                                 state_compress);
-      delete state_compress;
-      CHECK_NE(0, destlen);
-      if (!compressed_is_preallocated) {
-        compressed->resize(destlen);
-      }
-      break;
-    }
-#endif  // QLZ_VERSION_MAJOR
-
-#ifdef FASTLZ_VERSION
-    case FASTLZ: {
-      // Use level 1 compression since we mostly care about speed.
-      int destlen = fastlz_compress_level(
-          1,
-          input,
-          input_size,
-          string_as_array(compressed));
-      if (!compressed_is_preallocated) {
-        compressed->resize(destlen);
-      }
-      CHECK_NE(destlen, 0);
-      break;
-    }
-#endif  // FASTLZ_VERSION
-
-    case SNAPPY: {
-      size_t destlen;
-      snappy::RawCompress(input, input_size,
-                          string_as_array(compressed),
-                          &destlen);
-      CHECK_LE(destlen, snappy::MaxCompressedLength(input_size));
-      if (!compressed_is_preallocated) {
-        compressed->resize(destlen);
-      }
-      break;
-    }
-
-
-    default: {
-      return false;     // the asked-for library wasn't compiled in
-    }
-  }
-  return true;
-}
-
-static bool Uncompress(const string& compressed, CompressorType comp,
-                       int size, string* output) {
-  switch (comp) {
-#ifdef ZLIB_VERSION
-    case ZLIB: {
-      output->resize(size);
-      ZLib zlib;
-      uLongf destlen = output->size();
-      int ret = zlib.Uncompress(
-          reinterpret_cast<Bytef*>(string_as_array(output)),
-          &destlen,
-          reinterpret_cast<const Bytef*>(compressed.data()),
-          compressed.size());
-      CHECK_EQ(Z_OK, ret);
-      CHECK_EQ(static_cast<uLongf>(size), destlen);
-      break;
-    }
-#endif  // ZLIB_VERSION
-
-#ifdef LZO_VERSION
-    case LZO: {
-      output->resize(size);
-      lzo_uint destlen;
-      int ret = lzo1x_decompress(
-          reinterpret_cast<const uint8*>(compressed.data()),
-          compressed.size(),
-          reinterpret_cast<uint8*>(string_as_array(output)),
-          &destlen,
-          NULL);
-      CHECK_EQ(LZO_E_OK, ret);
-      CHECK_EQ(static_cast<lzo_uint>(size), destlen);
-      break;
-    }
-#endif  // LZO_VERSION
-
-#ifdef LZF_VERSION
-    case LIBLZF: {
-      output->resize(size);
-      int destlen = lzf_decompress(compressed.data(),
-                                   compressed.size(),
-                                   string_as_array(output),
-                                   output->size());
-      if (destlen == 0) {
-        // This error probably means we had decided not to compress,
-        // and thus have stored input in output directly.
-        output->assign(compressed.data(), compressed.size());
-        destlen = compressed.size();
-      }
-      CHECK_EQ(destlen, size);
-      break;
-    }
-#endif  // LZF_VERSION
-
-#ifdef QLZ_VERSION_MAJOR
-    case QUICKLZ: {
-      output->resize(size);
-      qlz_state_decompress *state_decompress = new qlz_state_decompress;
-      int destlen = qlz_decompress(compressed.data(),
-                                   string_as_array(output),
-                                   state_decompress);
-      delete state_decompress;
-      CHECK_EQ(destlen, size);
-      break;
-    }
-#endif  // QLZ_VERSION_MAJOR
-
-#ifdef FASTLZ_VERSION
-    case FASTLZ: {
-      output->resize(size);
-      int destlen = fastlz_decompress(compressed.data(),
-                                      compressed.length(),
-                                      string_as_array(output),
-                                      size);
-      CHECK_EQ(destlen, size);
-      break;
-    }
-#endif  // FASTLZ_VERSION
-
-    case SNAPPY: {
-      snappy::RawUncompress(compressed.data(), compressed.size(),
-                            string_as_array(output));
-      break;
-    }
-
-
-    default: {
-      return false;     // the asked-for library wasn't compiled in
-    }
-  }
-  return true;
-}
-
-static void Measure(const char* data,
-                    size_t length,
-                    CompressorType comp,
-                    int repeats,
-                    int block_size) {
-  // Run tests a few time and pick median running times
-  static const int kRuns = 5;
-  double ctime[kRuns];
-  double utime[kRuns];
-  int compressed_size = 0;
-
-  {
-    // Chop the input into blocks
-    int num_blocks = (length + block_size - 1) / block_size;
-    vector<const char*> input(num_blocks);
-    vector<size_t> input_length(num_blocks);
-    vector<string> compressed(num_blocks);
-    vector<string> output(num_blocks);
-    for (int b = 0; b < num_blocks; b++) {
-      int input_start = b * block_size;
-      int input_limit = min<int>((b+1)*block_size, length);
-      input[b] = data+input_start;
-      input_length[b] = input_limit-input_start;
-
-      // Pre-grow the output buffer so we don't measure string append time.
-      compressed[b].resize(MinimumRequiredOutputSpace(block_size, comp));
-    }
-
-    // First, try one trial compression to make sure the code is compiled in
-    if (!Compress(input[0], input_length[0], comp, &compressed[0], true)) {
-      LOG(WARNING) << "Skipping " << names[comp] << ": "
-                   << "library not compiled in";
-      return;
-    }
-
-    for (int run = 0; run < kRuns; run++) {
-      CycleTimer ctimer, utimer;
-
-      for (int b = 0; b < num_blocks; b++) {
-        // Pre-grow the output buffer so we don't measure string append time.
-        compressed[b].resize(MinimumRequiredOutputSpace(block_size, comp));
-      }
-
-      ctimer.Start();
-      for (int b = 0; b < num_blocks; b++)
-        for (int i = 0; i < repeats; i++)
-          Compress(input[b], input_length[b], comp, &compressed[b], true);
-      ctimer.Stop();
-
-      // Compress once more, with resizing, so we don't leave junk
-      // at the end that will confuse the decompressor.
-      for (int b = 0; b < num_blocks; b++) {
-        Compress(input[b], input_length[b], comp, &compressed[b], false);
-      }
-
-      for (int b = 0; b < num_blocks; b++) {
-        output[b].resize(input_length[b]);
-      }
-
-      utimer.Start();
-      for (int i = 0; i < repeats; i++)
-        for (int b = 0; b < num_blocks; b++)
-          Uncompress(compressed[b], comp, input_length[b], &output[b]);
-      utimer.Stop();
-
-      ctime[run] = ctimer.Get();
-      utime[run] = utimer.Get();
-    }
-
-    compressed_size = 0;
-    for (int i = 0; i < compressed.size(); i++) {
-      compressed_size += compressed[i].size();
-    }
-  }
-
-  sort(ctime, ctime + kRuns);
-  sort(utime, utime + kRuns);
-  const int med = kRuns/2;
-
-  float comp_rate = (length / ctime[med]) * repeats / 1048576.0;
-  float uncomp_rate = (length / utime[med]) * repeats / 1048576.0;
-  string x = names[comp];
-  x += ":";
-  string urate = (uncomp_rate >= 0)
-                 ? StringPrintf("%.1f", uncomp_rate)
-                 : string("?");
-  printf("%-7s [b %dM] bytes %6d -> %6d %4.1f%%  "
-         "comp %5.1f MB/s  uncomp %5s MB/s\n",
-         x.c_str(),
-         block_size/(1<<20),
-         static_cast<int>(length), static_cast<uint32>(compressed_size),
-         (compressed_size * 100.0) / max<int>(1, length),
-         comp_rate,
-         urate.c_str());
-}
-
-
-static int VerifyString(const string& input) {
-  string compressed;
-  DataEndingAtUnreadablePage i(input);
-  const size_t written = snappy::Compress(i.data(), i.size(), &compressed);
-  CHECK_EQ(written, compressed.size());
-  CHECK_LE(compressed.size(),
-           snappy::MaxCompressedLength(input.size()));
-  CHECK(snappy::IsValidCompressedBuffer(compressed.data(), compressed.size()));
-
-  string uncompressed;
-  DataEndingAtUnreadablePage c(compressed);
-  CHECK(snappy::Uncompress(c.data(), c.size(), &uncompressed));
-  CHECK_EQ(uncompressed, input);
-  return uncompressed.size();
-}
-
-
-// Test that data compressed by a compressor that does not
-// obey block sizes is uncompressed properly.
-static void VerifyNonBlockedCompression(const string& input) {
-  if (input.length() > snappy::kBlockSize) {
-    // We cannot test larger blocks than the maximum block size, obviously.
-    return;
-  }
-
-  string prefix;
-  Varint::Append32(&prefix, input.size());
-
-  // Setup compression table
-  snappy::internal::WorkingMemory wmem;
-  int table_size;
-  uint16* table = wmem.GetHashTable(input.size(), &table_size);
-
-  // Compress entire input in one shot
-  string compressed;
-  compressed += prefix;
-  compressed.resize(prefix.size()+snappy::MaxCompressedLength(input.size()));
-  char* dest = string_as_array(&compressed) + prefix.size();
-  char* end = snappy::internal::CompressFragment(input.data(), input.size(),
-                                                dest, table, table_size);
-  compressed.resize(end - compressed.data());
-
-  // Uncompress into string
-  string uncomp_str;
-  CHECK(snappy::Uncompress(compressed.data(), compressed.size(), &uncomp_str));
-  CHECK_EQ(uncomp_str, input);
-
-}
-
-// Expand the input so that it is at least K times as big as block size
-static string Expand(const string& input) {
-  static const int K = 3;
-  string data = input;
-  while (data.size() < K * snappy::kBlockSize) {
-    data += input;
-  }
-  return data;
-}
-
-static int Verify(const string& input) {
-  VLOG(1) << "Verifying input of size " << input.size();
-
-  // Compress using string based routines
-  const int result = VerifyString(input);
-
-
-  VerifyNonBlockedCompression(input);
-  if (!input.empty()) {
-    VerifyNonBlockedCompression(Expand(input));
-  }
-
-
-  return result;
-}
-
-// This test checks to ensure that snappy doesn't coredump if it gets
-// corrupted data.
-
-static bool IsValidCompressedBuffer(const string& c) {
-  return snappy::IsValidCompressedBuffer(c.data(), c.size());
-}
-static bool Uncompress(const string& c, string* u) {
-  return snappy::Uncompress(c.data(), c.size(), u);
-}
-
-TYPED_TEST(CorruptedTest, VerifyCorrupted) {
-  string source = "making sure we don't crash with corrupted input";
-  VLOG(1) << source;
-  string dest;
-  TypeParam uncmp;
-  snappy::Compress(source.data(), source.size(), &dest);
-
-  // Mess around with the data. It's hard to simulate all possible
-  // corruptions; this is just one example ...
-  CHECK_GT(dest.size(), 3);
-  dest[1]--;
-  dest[3]++;
-  // this really ought to fail.
-  CHECK(!IsValidCompressedBuffer(TypeParam(dest)));
-  CHECK(!Uncompress(TypeParam(dest), &uncmp));
-
-  // This is testing for a security bug - a buffer that decompresses to 100k
-  // but we lie in the snappy header and only reserve 0 bytes of memory :)
-  source.resize(100000);
-  for (int i = 0; i < source.length(); ++i) {
-    source[i] = 'A';
-  }
-  snappy::Compress(source.data(), source.size(), &dest);
-  dest[0] = dest[1] = dest[2] = dest[3] = 0;
-  CHECK(!IsValidCompressedBuffer(TypeParam(dest)));
-  CHECK(!Uncompress(TypeParam(dest), &uncmp));
-
-  if (sizeof(void *) == 4) {
-    // Another security check; check a crazy big length can't DoS us with an
-    // over-allocation.
-    // Currently this is done only for 32-bit builds.  On 64-bit builds,
-    // where 3 GB might be an acceptable allocation size, Uncompress()
-    // attempts to decompress, and sometimes causes the test to run out of
-    // memory.
-    dest[0] = dest[1] = dest[2] = dest[3] = 0xff;
-    // This decodes to a really large size, i.e., about 3 GB.
-    dest[4] = 'k';
-    CHECK(!IsValidCompressedBuffer(TypeParam(dest)));
-    CHECK(!Uncompress(TypeParam(dest), &uncmp));
-  } else {
-    LOG(WARNING) << "Crazy decompression lengths not checked on 64-bit build";
-  }
-
-  // This decodes to about 2 MB; much smaller, but should still fail.
-  dest[0] = dest[1] = dest[2] = 0xff;
-  dest[3] = 0x00;
-  CHECK(!IsValidCompressedBuffer(TypeParam(dest)));
-  CHECK(!Uncompress(TypeParam(dest), &uncmp));
-
-  // try reading stuff in from a bad file.
-  for (int i = 1; i <= 3; ++i) {
-    string data = ReadTestDataFile(StringPrintf("baddata%d.snappy", i).c_str(),
-                                   0);
-    string uncmp;
-    // check that we don't return a crazy length
-    size_t ulen;
-    CHECK(!snappy::GetUncompressedLength(data.data(), data.size(), &ulen)
-          || (ulen < (1<<20)));
-    uint32 ulen2;
-    snappy::ByteArraySource source(data.data(), data.size());
-    CHECK(!snappy::GetUncompressedLength(&source, &ulen2) ||
-          (ulen2 < (1<<20)));
-    CHECK(!IsValidCompressedBuffer(TypeParam(data)));
-    CHECK(!Uncompress(TypeParam(data), &uncmp));
-  }
-}
-
-// Helper routines to construct arbitrary compressed strings.
-// These mirror the compression code in snappy.cc, but are copied
-// here so that we can bypass some limitations in the how snappy.cc
-// invokes these routines.
-static void AppendLiteral(string* dst, const string& literal) {
-  if (literal.empty()) return;
-  int n = literal.size() - 1;
-  if (n < 60) {
-    // Fit length in tag byte
-    dst->push_back(0 | (n << 2));
-  } else {
-    // Encode in upcoming bytes
-    char number[4];
-    int count = 0;
-    while (n > 0) {
-      number[count++] = n & 0xff;
-      n >>= 8;
-    }
-    dst->push_back(0 | ((59+count) << 2));
-    *dst += string(number, count);
-  }
-  *dst += literal;
-}
-
-static void AppendCopy(string* dst, int offset, int length) {
-  while (length > 0) {
-    // Figure out how much to copy in one shot
-    int to_copy;
-    if (length >= 68) {
-      to_copy = 64;
-    } else if (length > 64) {
-      to_copy = 60;
-    } else {
-      to_copy = length;
-    }
-    length -= to_copy;
-
-    if ((to_copy < 12) && (offset < 2048)) {
-      assert(to_copy-4 < 8);            // Must fit in 3 bits
-      dst->push_back(1 | ((to_copy-4) << 2) | ((offset >> 8) << 5));
-      dst->push_back(offset & 0xff);
-    } else if (offset < 65536) {
-      dst->push_back(2 | ((to_copy-1) << 2));
-      dst->push_back(offset & 0xff);
-      dst->push_back(offset >> 8);
-    } else {
-      dst->push_back(3 | ((to_copy-1) << 2));
-      dst->push_back(offset & 0xff);
-      dst->push_back((offset >> 8) & 0xff);
-      dst->push_back((offset >> 16) & 0xff);
-      dst->push_back((offset >> 24) & 0xff);
-    }
-  }
-}
-
-TEST(Snappy, SimpleTests) {
-  Verify("");
-  Verify("a");
-  Verify("ab");
-  Verify("abc");
-
-  Verify("aaaaaaa" + string(16, 'b') + string("aaaaa") + "abc");
-  Verify("aaaaaaa" + string(256, 'b') + string("aaaaa") + "abc");
-  Verify("aaaaaaa" + string(2047, 'b') + string("aaaaa") + "abc");
-  Verify("aaaaaaa" + string(65536, 'b') + string("aaaaa") + "abc");
-  Verify("abcaaaaaaa" + string(65536, 'b') + string("aaaaa") + "abc");
-}
-
-// Verify max blowup (lots of four-byte copies)
-TEST(Snappy, MaxBlowup) {
-  string input;
-  for (int i = 0; i < 20000; i++) {
-    ACMRandom rnd(i);
-    uint32 bytes = static_cast<uint32>(rnd.Next());
-    input.append(reinterpret_cast<char*>(&bytes), sizeof(bytes));
-  }
-  for (int i = 19999; i >= 0; i--) {
-    ACMRandom rnd(i);
-    uint32 bytes = static_cast<uint32>(rnd.Next());
-    input.append(reinterpret_cast<char*>(&bytes), sizeof(bytes));
-  }
-  Verify(input);
-}
-
-TEST(Snappy, RandomData) {
-  ACMRandom rnd(FLAGS_test_random_seed);
-
-  const int num_ops = 20000;
-  for (int i = 0; i < num_ops; i++) {
-    if ((i % 1000) == 0) {
-      VLOG(0) << "Random op " << i << " of " << num_ops;
-    }
-
-    string x;
-    int len = rnd.Uniform(4096);
-    if (i < 100) {
-      len = 65536 + rnd.Uniform(65536);
-    }
-    while (x.size() < len) {
-      int run_len = 1;
-      if (rnd.OneIn(10)) {
-        run_len = rnd.Skewed(8);
-      }
-      char c = (i < 100) ? rnd.Uniform(256) : rnd.Skewed(3);
-      while (run_len-- > 0 && x.size() < len) {
-        x += c;
-      }
-    }
-
-    Verify(x);
-  }
-}
-
-TEST(Snappy, FourByteOffset) {
-  // The new compressor cannot generate four-byte offsets since
-  // it chops up the input into 32KB pieces.  So we hand-emit the
-  // copy manually.
-
-  // The two fragments that make up the input string.
-  string fragment1 = "012345689abcdefghijklmnopqrstuvwxyz";
-  string fragment2 = "some other string";
-
-  // How many times each fragment is emitted.
-  const int n1 = 2;
-  const int n2 = 100000 / fragment2.size();
-  const int length = n1 * fragment1.size() + n2 * fragment2.size();
-
-  string compressed;
-  Varint::Append32(&compressed, length);
-
-  AppendLiteral(&compressed, fragment1);
-  string src = fragment1;
-  for (int i = 0; i < n2; i++) {
-    AppendLiteral(&compressed, fragment2);
-    src += fragment2;
-  }
-  AppendCopy(&compressed, src.size(), fragment1.size());
-  src += fragment1;
-  CHECK_EQ(length, src.size());
-
-  string uncompressed;
-  CHECK(snappy::IsValidCompressedBuffer(compressed.data(), compressed.size()));
-  CHECK(snappy::Uncompress(compressed.data(), compressed.size(),
-                           &uncompressed));
-  CHECK_EQ(uncompressed, src);
-}
-
-
-static bool CheckUncompressedLength(const string& compressed,
-                                    size_t* ulength) {
-  const bool result1 = snappy::GetUncompressedLength(compressed.data(),
-                                                     compressed.size(),
-                                                     ulength);
-
-  snappy::ByteArraySource source(compressed.data(), compressed.size());
-  uint32 length;
-  const bool result2 = snappy::GetUncompressedLength(&source, &length);
-  CHECK_EQ(result1, result2);
-  return result1;
-}
-
-TEST(SnappyCorruption, TruncatedVarint) {
-  string compressed, uncompressed;
-  size_t ulength;
-  compressed.push_back('\xf0');
-  CHECK(!CheckUncompressedLength(compressed, &ulength));
-  CHECK(!snappy::IsValidCompressedBuffer(compressed.data(), compressed.size()));
-  CHECK(!snappy::Uncompress(compressed.data(), compressed.size(),
-                            &uncompressed));
-}
-
-TEST(SnappyCorruption, UnterminatedVarint) {
-  string compressed, uncompressed;
-  size_t ulength;
-  compressed.push_back(128);
-  compressed.push_back(128);
-  compressed.push_back(128);
-  compressed.push_back(128);
-  compressed.push_back(128);
-  compressed.push_back(10);
-  CHECK(!CheckUncompressedLength(compressed, &ulength));
-  CHECK(!snappy::IsValidCompressedBuffer(compressed.data(), compressed.size()));
-  CHECK(!snappy::Uncompress(compressed.data(), compressed.size(),
-                            &uncompressed));
-}
-
-TEST(Snappy, ReadPastEndOfBuffer) {
-  // Check that we do not read past end of input
-
-  // Make a compressed string that ends with a single-byte literal
-  string compressed;
-  Varint::Append32(&compressed, 1);
-  AppendLiteral(&compressed, "x");
-
-  string uncompressed;
-  DataEndingAtUnreadablePage c(compressed);
-  CHECK(snappy::Uncompress(c.data(), c.size(), &uncompressed));
-  CHECK_EQ(uncompressed, string("x"));
-}
-
-// Check for an infinite loop caused by a copy with offset==0
-TEST(Snappy, ZeroOffsetCopy) {
-  const char* compressed = "\x40\x12\x00\x00";
-  //  \x40              Length (must be > kMaxIncrementCopyOverflow)
-  //  \x12\x00\x00      Copy with offset==0, length==5
-  char uncompressed[100];
-  EXPECT_FALSE(snappy::RawUncompress(compressed, 4, uncompressed));
-}
-
-TEST(Snappy, ZeroOffsetCopyValidation) {
-  const char* compressed = "\x05\x12\x00\x00";
-  //  \x05              Length
-  //  \x12\x00\x00      Copy with offset==0, length==5
-  EXPECT_FALSE(snappy::IsValidCompressedBuffer(compressed, 4));
-}
-
-
-namespace {
-
-int TestFindMatchLength(const char* s1, const char *s2, unsigned length) {
-  return snappy::internal::FindMatchLength(s1, s2, s2 + length);
-}
-
-}  // namespace
-
-TEST(Snappy, FindMatchLength) {
-  // Exercise all different code paths through the function.
-  // 64-bit version:
-
-  // Hit s1_limit in 64-bit loop, hit s1_limit in single-character loop.
-  EXPECT_EQ(6, TestFindMatchLength("012345", "012345", 6));
-  EXPECT_EQ(11, TestFindMatchLength("01234567abc", "01234567abc", 11));
-
-  // Hit s1_limit in 64-bit loop, find a non-match in single-character loop.
-  EXPECT_EQ(9, TestFindMatchLength("01234567abc", "01234567axc", 9));
-
-  // Same, but edge cases.
-  EXPECT_EQ(11, TestFindMatchLength("01234567abc!", "01234567abc!", 11));
-  EXPECT_EQ(11, TestFindMatchLength("01234567abc!", "01234567abc?", 11));
-
-  // Find non-match at once in first loop.
-  EXPECT_EQ(0, TestFindMatchLength("01234567xxxxxxxx", "?1234567xxxxxxxx", 16));
-  EXPECT_EQ(1, TestFindMatchLength("01234567xxxxxxxx", "0?234567xxxxxxxx", 16));
-  EXPECT_EQ(4, TestFindMatchLength("01234567xxxxxxxx", "01237654xxxxxxxx", 16));
-  EXPECT_EQ(7, TestFindMatchLength("01234567xxxxxxxx", "0123456?xxxxxxxx", 16));
-
-  // Find non-match in first loop after one block.
-  EXPECT_EQ(8, TestFindMatchLength("abcdefgh01234567xxxxxxxx",
-                                   "abcdefgh?1234567xxxxxxxx", 24));
-  EXPECT_EQ(9, TestFindMatchLength("abcdefgh01234567xxxxxxxx",
-                                   "abcdefgh0?234567xxxxxxxx", 24));
-  EXPECT_EQ(12, TestFindMatchLength("abcdefgh01234567xxxxxxxx",
-                                    "abcdefgh01237654xxxxxxxx", 24));
-  EXPECT_EQ(15, TestFindMatchLength("abcdefgh01234567xxxxxxxx",
-                                    "abcdefgh0123456?xxxxxxxx", 24));
-
-  // 32-bit version:
-
-  // Short matches.
-  EXPECT_EQ(0, TestFindMatchLength("01234567", "?1234567", 8));
-  EXPECT_EQ(1, TestFindMatchLength("01234567", "0?234567", 8));
-  EXPECT_EQ(2, TestFindMatchLength("01234567", "01?34567", 8));
-  EXPECT_EQ(3, TestFindMatchLength("01234567", "012?4567", 8));
-  EXPECT_EQ(4, TestFindMatchLength("01234567", "0123?567", 8));
-  EXPECT_EQ(5, TestFindMatchLength("01234567", "01234?67", 8));
-  EXPECT_EQ(6, TestFindMatchLength("01234567", "012345?7", 8));
-  EXPECT_EQ(7, TestFindMatchLength("01234567", "0123456?", 8));
-  EXPECT_EQ(7, TestFindMatchLength("01234567", "0123456?", 7));
-  EXPECT_EQ(7, TestFindMatchLength("01234567!", "0123456??", 7));
-
-  // Hit s1_limit in 32-bit loop, hit s1_limit in single-character loop.
-  EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd", "xxxxxxabcd", 10));
-  EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd?", "xxxxxxabcd?", 10));
-  EXPECT_EQ(13, TestFindMatchLength("xxxxxxabcdef", "xxxxxxabcdef", 13));
-
-  // Same, but edge cases.
-  EXPECT_EQ(12, TestFindMatchLength("xxxxxx0123abc!", "xxxxxx0123abc!", 12));
-  EXPECT_EQ(12, TestFindMatchLength("xxxxxx0123abc!", "xxxxxx0123abc?", 12));
-
-  // Hit s1_limit in 32-bit loop, find a non-match in single-character loop.
-  EXPECT_EQ(11, TestFindMatchLength("xxxxxx0123abc", "xxxxxx0123axc", 13));
-
-  // Find non-match at once in first loop.
-  EXPECT_EQ(6, TestFindMatchLength("xxxxxx0123xxxxxxxx",
-                                   "xxxxxx?123xxxxxxxx", 18));
-  EXPECT_EQ(7, TestFindMatchLength("xxxxxx0123xxxxxxxx",
-                                   "xxxxxx0?23xxxxxxxx", 18));
-  EXPECT_EQ(8, TestFindMatchLength("xxxxxx0123xxxxxxxx",
-                                   "xxxxxx0132xxxxxxxx", 18));
-  EXPECT_EQ(9, TestFindMatchLength("xxxxxx0123xxxxxxxx",
-                                   "xxxxxx012?xxxxxxxx", 18));
-
-  // Same, but edge cases.
-  EXPECT_EQ(6, TestFindMatchLength("xxxxxx0123", "xxxxxx?123", 10));
-  EXPECT_EQ(7, TestFindMatchLength("xxxxxx0123", "xxxxxx0?23", 10));
-  EXPECT_EQ(8, TestFindMatchLength("xxxxxx0123", "xxxxxx0132", 10));
-  EXPECT_EQ(9, TestFindMatchLength("xxxxxx0123", "xxxxxx012?", 10));
-
-  // Find non-match in first loop after one block.
-  EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd0123xx",
-                                    "xxxxxxabcd?123xx", 16));
-  EXPECT_EQ(11, TestFindMatchLength("xxxxxxabcd0123xx",
-                                    "xxxxxxabcd0?23xx", 16));
-  EXPECT_EQ(12, TestFindMatchLength("xxxxxxabcd0123xx",
-                                    "xxxxxxabcd0132xx", 16));
-  EXPECT_EQ(13, TestFindMatchLength("xxxxxxabcd0123xx",
-                                    "xxxxxxabcd012?xx", 16));
-
-  // Same, but edge cases.
-  EXPECT_EQ(10, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd?123", 14));
-  EXPECT_EQ(11, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd0?23", 14));
-  EXPECT_EQ(12, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd0132", 14));
-  EXPECT_EQ(13, TestFindMatchLength("xxxxxxabcd0123", "xxxxxxabcd012?", 14));
-}
-
-TEST(Snappy, FindMatchLengthRandom) {
-  const int kNumTrials = 10000;
-  const int kTypicalLength = 10;
-  ACMRandom rnd(FLAGS_test_random_seed);
-
-  for (int i = 0; i < kNumTrials; i++) {
-    string s, t;
-    char a = rnd.Rand8();
-    char b = rnd.Rand8();
-    while (!rnd.OneIn(kTypicalLength)) {
-      s.push_back(rnd.OneIn(2) ? a : b);
-      t.push_back(rnd.OneIn(2) ? a : b);
-    }
-    DataEndingAtUnreadablePage u(s);
-    DataEndingAtUnreadablePage v(t);
-    int matched = snappy::internal::FindMatchLength(
-        u.data(), v.data(), v.data() + t.size());
-    if (matched == t.size()) {
-      EXPECT_EQ(s, t);
-    } else {
-      EXPECT_NE(s[matched], t[matched]);
-      for (int j = 0; j < matched; j++) {
-        EXPECT_EQ(s[j], t[j]);
-      }
-    }
-  }
-}
-
-
-static void CompressFile(const char* fname) {
-  string fullinput;
-  file::GetContents(fname, &fullinput, file::Defaults()).CheckSuccess();
-
-  string compressed;
-  Compress(fullinput.data(), fullinput.size(), SNAPPY, &compressed, false);
-
-  file::SetContents(string(fname).append(".comp"), compressed, file::Defaults())
-      .CheckSuccess();
-}
-
-static void UncompressFile(const char* fname) {
-  string fullinput;
-  file::GetContents(fname, &fullinput, file::Defaults()).CheckSuccess();
-
-  size_t uncompLength;
-  CHECK(CheckUncompressedLength(fullinput, &uncompLength));
-
-  string uncompressed;
-  uncompressed.resize(uncompLength);
-  CHECK(snappy::Uncompress(fullinput.data(), fullinput.size(), &uncompressed));
-
-  file::SetContents(string(fname).append(".uncomp"), uncompressed,
-                    file::Defaults()).CheckSuccess();
-}
-
-static void MeasureFile(const char* fname) {
-  string fullinput;
-  file::GetContents(fname, &fullinput, file::Defaults()).CheckSuccess();
-  printf("%-40s :\n", fname);
-
-  int start_len = (FLAGS_start_len < 0) ? fullinput.size() : FLAGS_start_len;
-  int end_len = fullinput.size();
-  if (FLAGS_end_len >= 0) {
-    end_len = min<int>(fullinput.size(), FLAGS_end_len);
-  }
-  for (int len = start_len; len <= end_len; len++) {
-    const char* const input = fullinput.data();
-    int repeats = (FLAGS_bytes + len) / (len + 1);
-    if (FLAGS_zlib)     Measure(input, len, ZLIB, repeats, 1024<<10);
-    if (FLAGS_lzo)      Measure(input, len, LZO, repeats, 1024<<10);
-    if (FLAGS_liblzf)   Measure(input, len, LIBLZF, repeats, 1024<<10);
-    if (FLAGS_quicklz)  Measure(input, len, QUICKLZ, repeats, 1024<<10);
-    if (FLAGS_fastlz)   Measure(input, len, FASTLZ, repeats, 1024<<10);
-    if (FLAGS_snappy)    Measure(input, len, SNAPPY, repeats, 4096<<10);
-
-    // For block-size based measurements
-    if (0 && FLAGS_snappy) {
-      Measure(input, len, SNAPPY, repeats, 8<<10);
-      Measure(input, len, SNAPPY, repeats, 16<<10);
-      Measure(input, len, SNAPPY, repeats, 32<<10);
-      Measure(input, len, SNAPPY, repeats, 64<<10);
-      Measure(input, len, SNAPPY, repeats, 256<<10);
-      Measure(input, len, SNAPPY, repeats, 1024<<10);
-    }
-  }
-}
-
-static struct {
-  const char* label;
-  const char* filename;
-  size_t size_limit;
-} files[] = {
-  { "html", "html", 0 },
-  { "urls", "urls.10K", 0 },
-  { "jpg", "house.jpg", 0 },
-  { "jpg_200", "house.jpg", 200 },
-  { "pdf", "mapreduce-osdi-1.pdf", 0 },
-  { "html4", "html_x_4", 0 },
-  { "cp", "cp.html", 0 },
-  { "c", "fields.c", 0 },
-  { "lsp", "grammar.lsp", 0 },
-  { "xls", "kennedy.xls", 0 },
-  { "xls_200", "kennedy.xls", 200 },
-  { "txt1", "alice29.txt", 0 },
-  { "txt2", "asyoulik.txt", 0 },
-  { "txt3", "lcet10.txt", 0 },
-  { "txt4", "plrabn12.txt", 0 },
-  { "bin", "ptt5", 0 },
-  { "bin_200", "ptt5", 200 },
-  { "sum", "sum", 0 },
-  { "man", "xargs.1", 0 },
-  { "pb", "geo.protodata", 0 },
-  { "gaviota", "kppkn.gtb", 0 },
-};
-
-static void BM_UFlat(int iters, int arg) {
-  StopBenchmarkTiming();
-
-  // Pick file to process based on "arg"
-  CHECK_GE(arg, 0);
-  CHECK_LT(arg, ARRAYSIZE(files));
-  string contents = ReadTestDataFile(files[arg].filename,
-                                     files[arg].size_limit);
-
-  string zcontents;
-  snappy::Compress(contents.data(), contents.size(), &zcontents);
-  char* dst = new char[contents.size()];
-
-  SetBenchmarkBytesProcessed(static_cast<int64>(iters) *
-                             static_cast<int64>(contents.size()));
-  SetBenchmarkLabel(files[arg].label);
-  StartBenchmarkTiming();
-  while (iters-- > 0) {
-    CHECK(snappy::RawUncompress(zcontents.data(), zcontents.size(), dst));
-  }
-  StopBenchmarkTiming();
-
-  delete[] dst;
-}
-BENCHMARK(BM_UFlat)->DenseRange(0, ARRAYSIZE(files) - 1);
-
-static void BM_UValidate(int iters, int arg) {
-  StopBenchmarkTiming();
-
-  // Pick file to process based on "arg"
-  CHECK_GE(arg, 0);
-  CHECK_LT(arg, ARRAYSIZE(files));
-  string contents = ReadTestDataFile(files[arg].filename,
-                                     files[arg].size_limit);
-
-  string zcontents;
-  snappy::Compress(contents.data(), contents.size(), &zcontents);
-
-  SetBenchmarkBytesProcessed(static_cast<int64>(iters) *
-                             static_cast<int64>(contents.size()));
-  SetBenchmarkLabel(files[arg].label);
-  StartBenchmarkTiming();
-  while (iters-- > 0) {
-    CHECK(snappy::IsValidCompressedBuffer(zcontents.data(), zcontents.size()));
-  }
-  StopBenchmarkTiming();
-}
-BENCHMARK(BM_UValidate)->DenseRange(0, 4);
-
-
-static void BM_ZFlat(int iters, int arg) {
-  StopBenchmarkTiming();
-
-  // Pick file to process based on "arg"
-  CHECK_GE(arg, 0);
-  CHECK_LT(arg, ARRAYSIZE(files));
-  string contents = ReadTestDataFile(files[arg].filename,
-                                     files[arg].size_limit);
-
-  char* dst = new char[snappy::MaxCompressedLength(contents.size())];
-
-  SetBenchmarkBytesProcessed(static_cast<int64>(iters) *
-                             static_cast<int64>(contents.size()));
-  StartBenchmarkTiming();
-
-  size_t zsize = 0;
-  while (iters-- > 0) {
-    snappy::RawCompress(contents.data(), contents.size(), dst, &zsize);
-  }
-  StopBenchmarkTiming();
-  const double compression_ratio =
-      static_cast<double>(zsize) / std::max<size_t>(1, contents.size());
-  SetBenchmarkLabel(StringPrintf("%s (%.2f %%)",
-                                 files[arg].label, 100.0 * compression_ratio));
-  VLOG(0) << StringPrintf("compression for %s: %zd -> %zd bytes",
-                          files[arg].label, contents.size(), zsize);
-  delete[] dst;
-}
-BENCHMARK(BM_ZFlat)->DenseRange(0, ARRAYSIZE(files) - 1);
-
-
-}  // namespace snappy
-
-
-int main(int argc, char** argv) {
-  InitGoogle(argv[0], &argc, &argv, true);
-  File::Init();
-  RunSpecifiedBenchmarks();
-
-
-  if (argc >= 2) {
-    for (int arg = 1; arg < argc; arg++) {
-      if (FLAGS_write_compressed) {
-        CompressFile(argv[arg]);
-      } else if (FLAGS_write_uncompressed) {
-        UncompressFile(argv[arg]);
-      } else {
-        MeasureFile(argv[arg]);
-      }
-    }
-    return 0;
-  }
-
-  return RUN_ALL_TESTS();
-}