Migration code for users updating to the 1.1.3 iPhone firmware, which has a different directory structure and permission setup

svn-id: r30761

2 files changed, 57 insertions, 3 deletions

diff --git a/backends/platform/iphone/osys_iphone.cpp b/backends/platform/iphone/osys_iphone.cpp
index 5bbb1b4ca9..3365c2da9d 100644
--- a/backends/platform/iphone/osys_iphone.cpp
+++ b/backends/platform/iphone/osys_iphone.cpp
@@ -27,15 +27,14 @@
 
 #include <CoreGraphics/CGDirectDisplay.h>
 #include <CoreSurface/CoreSurface.h>
-#include <AudioToolbox/AudioQueue.h>
 #include <unistd.h>
 #include <pthread.h>
 
-#include "common/system.h"
 #include "common/scummsys.h"
 #include "common/util.h"
 #include "common/rect.h"
-#include "common/events.h"
+#include "common/file.h"
+#include "common/fs.h"
 
 #include "base/main.h"
 
@@ -54,6 +53,7 @@ const OSystem::GraphicsMode OSystem_IPHONE::s_supportedGraphicsModes[] = {
 AQCallbackStruct OSystem_IPHONE::s_AudioQueue;
 SoundProc OSystem_IPHONE::s_soundCallback = NULL;
 void *OSystem_IPHONE::s_soundParam = NULL;
+bool OSystem_IPHONE::s_is113OrHigher = false;
 
 OSystem_IPHONE::OSystem_IPHONE() :
 	_savefile(NULL), _mixer(NULL), _timer(NULL), _offscreen(NULL),
@@ -1172,8 +1172,47 @@ OSystem *OSystem_IPHONE_create() {
 	return new OSystem_IPHONE();
 }
 
+const char* OSystem_IPHONE::getConfigPath() {
+	if (s_is113OrHigher)
+		return SCUMMVM_PREFS_PATH;
+	else
+		return SCUMMVM_OLD_PREFS_PATH;
+}
+
+const char* OSystem_IPHONE::getSavePath() {
+	if (s_is113OrHigher)
+		return SCUMMVM_SAVE_PATH;
+	else
+		return SCUMMVM_OLD_SAVE_PATH;
+}
+
+void OSystem_IPHONE::migrateApp() {
+	// Migrate to the new 1.1.3 directory structure, if needed.
+	
+	FilesystemNode file("/var/mobile");
+	if (file.exists() && file.isDirectory()) {
+		// We have 1.1.3 or above.
+		s_is113OrHigher = true;
+		file = FilesystemNode(SCUMMVM_ROOT_PATH);
+		if (!file.exists()) {
+			system("mkdir " SCUMMVM_ROOT_PATH);
+			system("mkdir " SCUMMVM_SAVE_PATH);
+
+			// Copy over the prefs file
+			system("cp " SCUMMVM_OLD_PREFS_PATH " " SCUMMVM_PREFS_PATH);
+
+			file = FilesystemNode(SCUMMVM_OLD_SAVE_PATH);
+			// Copy over old savegames to the new directory.
+			if (file.exists() && file.isDirectory())			
+				system("cp " SCUMMVM_OLD_SAVE_PATH "/* " SCUMMVM_SAVE_PATH "/");
+		}
+	}
+}
+
 void iphone_main(int argc, char *argv[]) {
 
+	OSystem_IPHONE::migrateApp();
+
 	// Redirect stdout and stderr if we're launching from the Springboard.
 	if (argc == 2 && strcmp(argv[1], "--launchedFromSB") == 0) {
 		FILE *newfp = fopen("/tmp/scummvm.log", "a");
diff --git a/backends/platform/iphone/osys_iphone.h b/backends/platform/iphone/osys_iphone.h
index eeb8504680..71272b73fe 100644
--- a/backends/platform/iphone/osys_iphone.h
+++ b/backends/platform/iphone/osys_iphone.h
@@ -27,11 +27,21 @@
 
 #include "graphics/surface.h"
 #include "iphone_common.h"
+#include "common/system.h"
+#include "common/events.h"
+
+#include <AudioToolbox/AudioQueue.h>
 
 #define AUDIO_BUFFERS 3
 #define WAVE_BUFFER_SIZE 8192
 #define AUDIO_SAMPLE_RATE 44100
 
+#define SCUMMVM_ROOT_PATH "/var/mobile/Library/ScummVM"
+#define SCUMMVM_SAVE_PATH SCUMMVM_ROOT_PATH "/Savegames"
+#define SCUMMVM_OLD_SAVE_PATH "/var/root/.scummvm"
+#define SCUMMVM_PREFS_PATH SCUMMVM_ROOT_PATH "/Preferences"
+#define SCUMMVM_OLD_PREFS_PATH "/var/root/.scummvmrc"
+
 typedef void (*SoundProc)(void *param, byte *buf, int len);
 typedef int (*TimerProc)(int interval);
 
@@ -49,6 +59,7 @@ protected:
 	static AQCallbackStruct s_AudioQueue;
 	static SoundProc s_soundCallback;
 	static void *s_soundParam;
+	static bool s_is113OrHigher;
 
 	Common::SaveFileManager *_savefile;
 	Audio::Mixer *_mixer;
@@ -154,6 +165,10 @@ public:
 	virtual Audio::Mixer *getMixer();
 	virtual Common::TimerManager *getTimerManager();
 
+	static void migrateApp();
+	static const char* getConfigPath();
+	static const char* getSavePath();	
+
 protected:
 	inline void addDirtyRect(int16 x1, int16 y1, int16 w, int16 h);
 	void internUpdateScreen();