Added Mac OS X support. I just need to check it on a Mac

Makefile

@@ -14,6 +14,14 @@ else
 BASE_CFLAGS+= -std=c++03
 endif
 
+#This is used to detect Mac because Mac needs CoreServices for linking
+ifneq ($(OS),Windows_NT)
+UNAME := $(shell uname -s)
+ifeq ($(UNAME),Darwin)
+BASE_LIBS+= -framework CoreServices
+endif
+endif
+
 PROGRAMNAME=platform_folders
 
 O_FILES=${PROGRAMNAME}.o sago/platform_folders.o

sago/platform_folders.cpp

@@ -58,6 +58,22 @@ static std::string GetAppDataCommon() {
 static std::string GetAppDataLocal() {
 	return GetWindowsFolder(CSIDL_LOCAL_APPDATA, "LocalAppData could not be found");
 }
+#elif defined(__APPLE__)
+#include <CoreServices/CoreServices.h>
+
+static std::string GetMacFolder(OSType folderType, const char* errorMsg) {
+	std::string ret;
+	FSRef ref;
+    char path[PATH_MAX];
+    OSStatus err = FSFindFolder( kUserDomain, folderType, kCreateFolder, &ref );
+	if (err != noErr) {
+		throw std::runtime_error(errorMsg);
+	}
+    FSRefMakePath( &ref, (UInt8*)&path, PATH_MAX );
+	ret = path;
+	return ret;
+}
+
 #else
 #include <map>
 #include <fstream>
@@ -147,6 +163,8 @@ namespace sago {
 std::string getDataHome() {
 #if defined(_WIN32)
 	return GetAppData();
+#elif defined(__APPLE__)
+	return GetMacFolder(kApplicationSupportFolderType, "Failed to find the Application Support Folder");
 #else
 	return getLinuxFolderDefault("XDG_DATA_HOME", ".local/share");
 #endif
@@ -155,6 +173,8 @@ std::string getDataHome() {
 std::string getConfigHome() {
 #if defined(_WIN32)
 	return GetAppData();
+#elif defined(__APPLE__)
+	return GetMacFolder(kApplicationSupportFolderType, "Failed to find the Application Support Folder");
 #else
 	return getLinuxFolderDefault("XDG_CONFIG_HOME", ".config");
 #endif
@@ -163,6 +183,8 @@ std::string getConfigHome() {
 std::string getCacheDir() {
 #if defined(_WIN32)
 	return GetAppDataLocal();
+#elif defined(__APPLE__)
+	return GetMacFolder(kCachedDataFolderType, "Failed to find the Application Support Folder");
 #else
 	return getLinuxFolderDefault("XDG_CONFIG_HOME", ".cache");
 #endif
@@ -171,6 +193,7 @@ std::string getCacheDir() {
 void appendAdditionalDataDirectories(std::vector<std::string>& homes) {
 #if defined(_WIN32)
 	homes.push_back(GetAppDataCommon());
+#elif defined(__APPLE__)
 #else
 	appendExtraFolders("XDG_DATA_DIRS", "/usr/local/share/:/usr/share/", homes);
 #endif
@@ -179,12 +202,14 @@ void appendAdditionalDataDirectories(std::vector<std::string>& homes) {
 void appendAdditionalConfigDirectories(std::vector<std::string>& homes) {
 #if defined(_WIN32)
 	homes.push_back(GetAppDataCommon());
+#elif defined(__APPLE__)
 #else
 	appendExtraFolders("XDG_CONFIG_DIRS", "/etc/xdg", homes);
 #endif
 }
 
 #if defined(_WIN32)
+#elif defined(__APPLE__)
 #else
 struct PlatformFolders::PlatformFoldersData {
 	std::map<std::string, std::string> folders;
@@ -226,6 +251,7 @@ static void PlatformFoldersFillData(std::map<std::string, std::string>& folders)
 
 PlatformFolders::PlatformFolders() {
 #if defined(_WIN32)
+#elif defined(__APPLE__)
 #else
 	this->data = new PlatformFolders::PlatformFoldersData();
 	try {
@@ -239,6 +265,7 @@ PlatformFolders::PlatformFolders() {
 
 PlatformFolders::~PlatformFolders() {
 #if defined(_WIN32)
+#elif defined(__APPLE__)
 #else
 	delete this->data;
 #endif
@@ -247,6 +274,8 @@ PlatformFolders::~PlatformFolders() {
 std::string PlatformFolders::getDocumentsFolder() const {
 #if defined(_WIN32)
 	return GetWindowsFolder(CSIDL_PERSONAL, "Failed to find My Documents folder");
+#elif defined(__APPLE__)
+	return GetMacFolder(kDocumentsFolderType, "Failed to find Documents Folder");
 #else
 	return data->folders["XDG_DOCUMENTS_DIR"];
 #endif
@@ -255,6 +284,8 @@ std::string PlatformFolders::getDocumentsFolder() const {
 std::string PlatformFolders::getDesktopFolder() const {
 #if defined(_WIN32)
 	return GetWindowsFolder(CSIDL_DESKTOP, "Failed to find Desktop folder");
+#elif defined(__APPLE__)
+	return GetMacFolder(kDesktopFolderType, "Failed to find Desktop folder");
 #else
 	return data->folders["XDG_DESKTOP_DIR"];
 #endif
@@ -263,6 +294,8 @@ std::string PlatformFolders::getDesktopFolder() const {
 std::string PlatformFolders::getPicturesFolder() const {
 #if defined(_WIN32)
 	return GetWindowsFolder(CSIDL_MYPICTURES, "Failed to find My Pictures folder");
+#elif defined(__APPLE__)
+	return GetMacFolder(kPictureDocumentsFolderType, "Failed to find Picture folder");
 #else
 	return data->folders["XDG_PICTURES_DIR"];
 #endif
@@ -272,6 +305,8 @@ std::string PlatformFolders::getDownloadFolder1() const {
 #if defined(_WIN32)
 	//Pre Vista. Files was downloaded to the desktop
 	return GetWindowsFolder(CSIDL_DESKTOP, "Failed to find My Downloads (Desktop) folder");
+#elif defined(__APPLE__)
+	return GetMacFolder(kDownloadsFolderType, "Failed to find Download folder");
 #else
 	return data->folders["XDG_DOWNLOAD_DIR"];
 #endif
@@ -280,6 +315,8 @@ std::string PlatformFolders::getDownloadFolder1() const {
 std::string PlatformFolders::getMusicFolder() const {
 #if defined(_WIN32)
 	return GetWindowsFolder(CSIDL_MYMUSIC, "Failed to find My Music folder");
+#elif defined(__APPLE__)
+	return GetMacFolder(kMusicDocumentsFolderType, "Failed to find Music folder");
 #else
 	return data->folders["XDG_MUSIC_DIR"];
 #endif
@@ -288,6 +325,8 @@ std::string PlatformFolders::getMusicFolder() const {
 std::string PlatformFolders::getVideoFolder() const {
 #if defined(_WIN32)
 	return GetWindowsFolder(CSIDL_MYVIDEO, "Failed to find My Video folder");
+#elif defined(__APPLE__)
+	return GetMacFolder(kMovieDocumentsFolderType, "Failed to find Movie folder");
 #else
 	return data->folders["XDG_VIDEOS_DIR"];
 #endif
@@ -298,6 +337,8 @@ std::string PlatformFolders::getSaveGamesFolder1() const {
 	//A dedicated Save Games folder was not introduced until Vista. For XP and older save games are most often saved in a normal folder named "My Games".
 	//Data that should not be user accessible should be placed under GetDataHome() instead
 	return GetWindowsFolder(CSIDL_PERSONAL, "Failed to find My Documents folder")+"\\My Games";
+#elif defined(__APPLE__)
+	return GetMacFolder(kApplicationSupportFolderType, "Failed to find Application Support Folder");
 #else
 	return getDataHome();
 #endif