Added FileSystem::listFiles().

gameplay/src/FileSystem.cpp

@@ -1,6 +1,14 @@
 #include "Base.h"
 #include "FileSystem.h"
 
+#ifdef WIN32
+    #include <windows.h>
+    #include <tchar.h>
+    #include <stdio.h>
+#else
+    #include <dirent.h>
+#endif
+
 namespace gameplay
 {
 
@@ -24,6 +32,75 @@ const char* FileSystem::getResourcePath()
     return __resourcePath.c_str();
 }
 
+bool FileSystem::listFiles(const char* dirPath, std::vector<std::string>& files)
+{
+    // TODO make this method work with absolute and relative paths.
+#ifdef WIN32
+    std::string path(FileSystem::getResourcePath());
+    if (dirPath && strlen(dirPath) > 0)
+    {
+        path.append(dirPath);
+    }
+    path.append("/*");
+    // Convert char to wchar
+    std::basic_string<TCHAR> wPath;
+    wPath.assign(path.begin(), path.end());
+
+    WIN32_FIND_DATA FindFileData;
+    HANDLE hFind = FindFirstFile(wPath.c_str(), &FindFileData);
+    if (hFind == INVALID_HANDLE_VALUE) 
+    {
+        return false;
+    }
+    do
+    {
+        // Add to the list if this is not a directory
+        if ((FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0)
+        {
+            // Convert wchar to char
+            std::basic_string<TCHAR> wfilename(FindFileData.cFileName);
+            std::string filename;
+            filename.assign(wfilename.begin(), wfilename.end());
+            files.push_back(filename);
+        }
+    } while(FindNextFile(hFind, &FindFileData) != 0);
+
+    FindClose(hFind);
+    return true;
+#else
+    std::string path(FileSystem::getResourcePath());
+    if (dirPath && strlen(dirPath) > 0)
+	{
+		path.append(dirPath);
+	}
+    path.append("/.");
+    struct dirent* dp;
+    DIR* dir = opendir(path.c_str());
+    if (!dir)
+    {
+        return false;
+    }
+	while ((dp = readdir(dir)) != NULL)
+	{
+		std::string filepath(path);
+		filepath.append("/");
+		filepath.append(dp->d_name);
+
+		struct stat buf;
+		if (!stat(filepath.c_str(), &buf))
+		{
+            // Add to the list if this is not a directory
+			if (!S_ISDIR(buf.st_mode))
+			{
+				files.push_back(dp->d_name);
+			}
+		}
+	}
+	closedir(dir);
+    return true;
+#endif
+}
+
 FILE* FileSystem::openFile(const char* path, const char* mode)
 {
     std::string fullPath(__resourcePath);

gameplay/src/FileSystem.h

@@ -33,6 +33,16 @@ public:
      */
     static const char* getResourcePath();
 
+    /**
+     * Lists the files in the specified directory and adds the files to the vector. Excludes directories.
+     * 
+     * @param dirPath Directory path relative to the path set in <code>setResourcePath(const char*)</code>.
+     * @param files The vector to append the files to.
+     * 
+     * @return True if successful, false if error.
+     */
+    static bool listFiles(const char* dirPath, std::vector<std::string>& files);
+
     /**
      * Opens the specified file.
      *