From ad6175c78a809f0acd5d547a1444bfebd99cb80b Mon Sep 17 00:00:00 2001
From: Michael Papageorgiou <werdanith@yahoo.gr>
Date: Thu, 8 Mar 2012 23:06:52 +0200
Subject: [PATCH] SoundManager: Set up the priority for file look up right and
 take care of a corner case

---
 apps/openmw/mwsound/soundmanager.cpp | 16 +++++----------
 components/files/filelibrary.cpp     | 29 +++++++++++++++++-----------
 components/files/filelibrary.hpp     |  1 +
 3 files changed, 24 insertions(+), 22 deletions(-)

diff --git a/apps/openmw/mwsound/soundmanager.cpp b/apps/openmw/mwsound/soundmanager.cpp
index 70118ea54..5f48081f2 100644
--- a/apps/openmw/mwsound/soundmanager.cpp
+++ b/apps/openmw/mwsound/soundmanager.cpp
@@ -71,9 +71,6 @@ namespace MWSound
     {
         if(useSound)
         {
-            // Temporary list of all sound directories
-            Files::PathContainer soundDirs;
-
             // The music library will accept these filetypes
             // If none is given then it will accept all filetypes
             std::vector<std::string> acceptableExtensions;
@@ -82,16 +79,14 @@ namespace MWSound
             acceptableExtensions.push_back(".ogg");
             acceptableExtensions.push_back(".flac");
 
-            for (Files::PathContainer::const_iterator it = dataDirs.begin(); it != dataDirs.end(); ++it)
+            // Makes a list of all sound files, searches in reverse for priority reasons
+            for (Files::PathContainer::const_reverse_iterator it = dataDirs.rbegin(); it != dataDirs.rend(); ++it)
             {
-                soundDirs.push_back( *it / std::string("Sound"));
-            }
-            for (Files::PathContainer::const_iterator it = soundDirs.begin(); it != soundDirs.end(); ++it)
-            {
-                Files::FileLister(*it, mSoundFiles, true);
+                Files::FileLister(*it / std::string("Sound"), mSoundFiles, true);
             }
 
-            for (Files::PathContainer::const_iterator it = dataDirs.begin(); it != dataDirs.end(); ++it)
+            // Makes a FileLibrary of all music files, searches in reverse for priority reasons
+            for (Files::PathContainer::const_reverse_iterator it = dataDirs.rbegin(); it != dataDirs.rend(); ++it)
             {
                 mMusicLibrary.add(*it / std::string("Music"), true, mFSStrict, acceptableExtensions);
             }
@@ -292,7 +287,6 @@ namespace MWSound
 
     void SoundManager::streamMusic(const std::string& filename)
     {
-        std::cout << filename << std::endl;
         std::string filePath = mMusicLibrary.locate(filename, mFSStrict).string();
         if(!filePath.empty())
         {
diff --git a/components/files/filelibrary.cpp b/components/files/filelibrary.cpp
index b896379d5..baefd79eb 100644
--- a/components/files/filelibrary.cpp
+++ b/components/files/filelibrary.cpp
@@ -2,6 +2,7 @@
 
 #include <iostream>
 
+#include <boost/filesystem.hpp>
 #include <boost/algorithm/string.hpp>
 
 namespace Files
@@ -22,13 +23,24 @@ namespace Files
     void FileLibrary::add(const boost::filesystem::path &root, bool recursive, bool strict,
             const StringVector &acceptableExtensions)
     {
-        PathContainer list;
+        if (!boost::filesystem::exists(root))
+        {
+            std::cout << "Warning " << root.string() << " does not exist.\n";
+            return;
+        }
+
         std::string fileExtension;
         std::string type;
-        FileLister(root, list, recursive);
 
-        for (PathContainer::iterator listIter = list.begin();
-            listIter != list.end(); ++listIter)
+        // remember the last location of the priority list when listing new items
+        int length = mPriorityList.size();
+
+        // First makes a list of all candidate files
+        FileLister(root, mPriorityList, recursive);
+
+        // Then sort these files into sections according to the folder they belong to
+        for (PathContainer::iterator listIter = mPriorityList.begin() + length;
+            listIter != mPriorityList.end(); ++listIter)
         {
             if( !acceptableExtensions.empty() )
             {
@@ -43,7 +55,7 @@ namespace Files
                 boost::algorithm::to_lower(type);
 
             mMap[type].push_back(*listIter);
-            //std::cout << "Added path: " << listIter->string() << " in section "<< type <<std::endl;
+            // std::cout << "Added path: " << listIter->string() << " in section "<< type <<std::endl;
         }
     }
 
@@ -82,12 +94,7 @@ namespace Files
         boost::filesystem::path result("");
         if (sectionName == "")
         {
-            for(StringPathContMap::iterator iter = mMap.begin(); iter != mMap.end(); iter++)
-            {
-                result = FileListLocator(iter->second, boost::filesystem::path(item), strict);
-                if (result != boost::filesystem::path(""))
-                    return result;
-            }
+            return FileListLocator(mPriorityList, boost::filesystem::path(item), strict);
         }
         else
         {
diff --git a/components/files/filelibrary.hpp b/components/files/filelibrary.hpp
index 9013dbb37..55978084f 100644
--- a/components/files/filelibrary.hpp
+++ b/components/files/filelibrary.hpp
@@ -17,6 +17,7 @@ namespace Files
         private:
             StringPathContMap mMap;
             PathContainer mEmptyPath;
+            PathContainer mPriorityList;
 
         public:
             /// Searches a path and adds the results to the library