From d8ec60d6d013fdd7e72861e823a908bc6c9a3704 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1s=20Touceda?= <chiiph@leap.se>
Date: Fri, 29 Mar 2013 11:54:36 -0300
Subject: Merge updates directory

Also, sets the env for thandy to work properly.
---
 src/CMakeLists.txt |  1 +
 src/launcher.py    |  7 ++++++-
 src/main.cpp       | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 66 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b783d6c..13eec53 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -4,6 +4,7 @@ SET(CMAKE_INSTALL_RPATH "lib")
 SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 
 SET(launcher_SOURCES main.cpp)
+SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
 
 IF(WIN32)
   SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mwindows")
diff --git a/src/launcher.py b/src/launcher.py
index 61e2a7f..328c965 100644
--- a/src/launcher.py
+++ b/src/launcher.py
@@ -1,3 +1,4 @@
+import os
 import time
 import threading
 
@@ -9,8 +10,12 @@ class Thandy(threading.Thread):
     def run(self):
         while True:
             try:
+                os.environ["THP_DB_ROOT"] = os.path.join(os.getcwd(),
+                                                         "packages")
+                os.environ["THP_INSTALL_ROOT"] = os.path.join(os.getcwd(),
+                                                              "updates")
                 args = [
-                    "--repo=/home/chiiph/Code/leap/repo/",
+                    "--repo=/home/chiiph/Code/leap/repo/",  # TODO:set as a URL
                     "--debug",
                     "--install",
                     "/bundleinfo/LEAPClient/"
diff --git a/src/main.cpp b/src/main.cpp
index d59a886..7b99470 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -10,12 +10,71 @@
 namespace py = boost::python;
 namespace fs = boost::filesystem;
 
+static const std::string UPDATES_DIR = "updates";
+
+/**
+   Given two directories, it merges them by copying new files and
+   directories, and replacing existing files with the ones at the
+   destination
+ */
+void
+mergeDirectories(const fs::path &source,
+                 const fs::path &dest)
+{
+  fs::path sourceDir(source);
+  fs::directory_iterator end_iter;
+
+  std::vector<fs::path> files;
+
+  if (fs::exists(sourceDir) && fs::is_directory(sourceDir))
+  {
+    for(fs::directory_iterator dir_iter(sourceDir); dir_iter != end_iter; ++dir_iter)
+    {
+      if (fs::is_regular_file(dir_iter->status()))
+      {
+        auto destFilePath = dest / dir_iter->path().filename();
+        copy_file(dir_iter->path(), destFilePath, fs::copy_option::overwrite_if_exists);
+      }
+      else if (fs::is_directory(dir_iter->status()))
+      {
+        auto currentPath = dir_iter->path();
+        auto pathAtDest = dest / currentPath.filename();
+        if (!fs::exists(pathAtDest))
+        {
+          // This just creates the directory
+          copy_directory(currentPath, pathAtDest);
+        }
+        mergeDirectories(currentPath, pathAtDest);
+      } // Ignore other kind of files for now
+    }
+  }
+}
+
+void
+updateIfNeeded()
+{
+  fs::path updatePath(fs::current_path() / fs::path(UPDATES_DIR));
+  if (fs::exists(updatePath))
+  {
+    std::cout << "Found updates, merging directories before doing anything..."
+              << std::endl;
+    mergeDirectories(updatePath, fs::current_path());
+    fs::remove_all(updatePath);
+  }
+  else
+  {
+    std::cout << "No updates found" << std::endl;
+  }
+}
+
 int
 main(int argc, char** argv)
 {
   try {
     fs::path full_path(fs::current_path());
 
+    updateIfNeeded();
+
     Py_Initialize();
 
     Py_SetPythonHome(const_cast<char*>(full_path.string().c_str()));
-- 
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