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-rw-r--r--app/lzo/examples/overlap.c74
1 files changed, 27 insertions, 47 deletions
diff --git a/app/lzo/examples/overlap.c b/app/lzo/examples/overlap.c
index b2337680..114fe3b4 100644
--- a/app/lzo/examples/overlap.c
+++ b/app/lzo/examples/overlap.c
@@ -2,22 +2,7 @@
This file is part of the LZO real-time data compression library.
- Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
+ Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
The LZO library is free software; you can redistribute it and/or
@@ -71,15 +56,7 @@ static const char *progname = NULL;
* will be needed. See step 4a) below.
*/
-static lzo_uint opt_overhead = 0; /* assume worst case */
-
-
-#if 0 && defined(LZO_USE_ASM)
- /* just for testing */
-# include <lzo_asm.h>
-# define lzo1x_decompress lzo1x_decompress_asm_fast
-#endif
-
+static long opt_overhead = 0; /* assume worst case */
static unsigned long total_files = 0;
static unsigned long total_in = 0;
@@ -89,7 +66,7 @@ static unsigned long total_in = 0;
//
**************************************************************************/
-int do_file ( const char *in_name )
+static int do_file(const char *in_name)
{
int r;
FILE *fp = NULL;
@@ -127,6 +104,11 @@ int do_file ( const char *in_name )
goto next_file;
}
in_len = (lzo_uint) l;
+ if ((long) in_len != l || l > 256L * 1024L * 1024L)
+ {
+ printf("%s: %s: file is too big -- skipping\n", progname, in_name);
+ goto next_file;
+ }
/*
* Step 2: allocate compression buffers and read the file
@@ -144,14 +126,14 @@ int do_file ( const char *in_name )
/*
* Step 3: compress from 'in' to 'out' with LZO1X-1
*/
- r = lzo1x_1_compress(in,in_len,out,&out_len,wrkmem);
+ r = lzo1x_1_compress(in, in_len, out, &out_len, wrkmem);
if (r != LZO_E_OK || out_len > in_len + in_len / 16 + 64 + 3)
{
/* this should NEVER happen */
printf("internal error - compression failed: %d\n", r);
exit(1);
}
- printf("%-26s %8lu -> %8lu\n", "LZO1X-1:", (unsigned long) in_len, (unsigned long) out_len);
+ printf("%-25s %8lu -> %8lu\n", "LZO1X-1:", (unsigned long) in_len, (unsigned long) out_len);
/***** Step 4: overlapping compression *****/
@@ -174,18 +156,18 @@ int do_file ( const char *in_name )
/*
* Step 4c: do an in-place compression within the 'overlap' buffer
*/
- r = lzo1x_1_compress(overlap+offset,in_len,overlap,&new_len,wrkmem);
+ r = lzo1x_1_compress(overlap + offset, in_len, overlap, &new_len, wrkmem);
if (r != LZO_E_OK)
{
/* this should NEVER happen */
- printf("overlapping compression failed: %d\n", r);
+ printf("in-place compression failed: %d\n", r);
exit(1);
}
/*
* Step 4d: verify overlapping compression
*/
- if (new_len != out_len || lzo_memcmp(out,overlap,out_len) != 0)
+ if (new_len != out_len || lzo_memcmp(out, overlap, out_len) != 0)
{
/* As compression is non-deterministic there can be a difference
* in the representation of the compressed data (but this usually
@@ -198,18 +180,18 @@ int do_file ( const char *in_name )
if (r != LZO_E_OK || ll != in_len || lzo_memcmp(in, tmp, ll) != 0)
{
/* this should NEVER happen */
- printf("overlapping compression data error\n");
+ printf("in-place compression data error\n");
exit(1);
}
lzo_free(tmp);
}
- printf("overlapping compression: %8lu -> %8lu overhead: %7lu\n",
+ printf(" in-place compression: %8lu -> %8lu overhead: %7lu\n",
(unsigned long) in_len, (unsigned long) new_len, (unsigned long) overhead);
lzo_free(overlap); overlap = NULL;
-/***** Step 5: overlapping decompression *****/
+/***** Step 5: in-place decompression *****/
/*
* Step 5a: allocate the 'overlap' buffer for in-place decompression
@@ -217,7 +199,7 @@ int do_file ( const char *in_name )
if (opt_overhead == 0 || out_len >= in_len)
overhead = in_len / 16 + 64 + 3;
else
- overhead = opt_overhead;
+ overhead = (lzo_uint) opt_overhead;
overlap = (lzo_bytep) xmalloc(in_len + overhead);
/*
@@ -231,24 +213,24 @@ int do_file ( const char *in_name )
* Step 5c: do an in-place decompression within the 'overlap' buffer
*/
new_len = in_len;
- r = lzo1x_decompress(overlap+offset,out_len,overlap,&new_len,NULL);
+ r = lzo1x_decompress_safe(overlap + offset, out_len, overlap, &new_len, NULL);
if (r != LZO_E_OK)
{
/* this may happen if overhead is too small */
- printf("overlapping decompression failed: %d - increase 'opt_overhead'\n", r);
+ printf("in-place decompression failed: %d - increase 'opt_overhead'\n", r);
exit(1);
}
/*
* Step 5d: verify decompression
*/
- if (new_len != in_len || lzo_memcmp(in,overlap,in_len) != 0)
+ if (new_len != in_len || lzo_memcmp(in, overlap, in_len) != 0)
{
/* this may happen if overhead is too small */
- printf("overlapping decompression data error - increase 'opt_overhead'\n");
+ printf("in-place decompression data error - increase 'opt_overhead'\n");
exit(1);
}
- printf("overlapping decompression: %8lu -> %8lu overhead: %7lu\n",
+ printf(" in-place decompression: %8lu -> %8lu overhead: %7lu\n",
(unsigned long) out_len, (unsigned long) new_len, (unsigned long) overhead);
lzo_free(overlap); overlap = NULL;
@@ -277,15 +259,15 @@ int __lzo_cdecl_main main(int argc, char *argv[])
printf("\nLZO real-time data compression library (v%s, %s).\n",
lzo_version_string(), lzo_version_date());
- printf("Copyright (C) 1996-2011 Markus Franz Xaver Johannes Oberhumer\nAll Rights Reserved.\n\n");
+ printf("Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer\nAll Rights Reserved.\n\n");
progname = argv[0];
if (i < argc && argv[i][0] == '-')
- opt_overhead = atoi(&argv[i++][1]);
+ opt_overhead = atol(&argv[i++][1]);
#if 1
- if (opt_overhead != 0 && opt_overhead < 8)
+ if (opt_overhead != 0 && opt_overhead < 4)
{
- printf("%s: invalid overhead value %ld\n", progname, (long)opt_overhead);
+ printf("%s: invalid overhead value %ld\n", progname, opt_overhead);
exit(1);
}
#endif
@@ -316,7 +298,5 @@ int __lzo_cdecl_main main(int argc, char *argv[])
return r;
}
-/*
-vi:ts=4:et
-*/
+/* vim:set ts=4 sw=4 et: */