BACKENDS: Add OSystem::getDefaultConfigFileName

This is used to provide default implementations for createConfigWriteStream
and createConfigReadStream, which can be used by most backends.

Note that backends can still override createConfigRead/WriteStream;
this could be useful if settings on some port are not stored in a
regular file (think 'Windows registry', for a hypothetical example).

2 files changed, 6 insertions, 20 deletions

diff --git a/backends/platform/iphone/osys_main.cpp b/backends/platform/iphone/osys_main.cpp
index 75156b9544..d0a10d9edc 100644
--- a/backends/platform/iphone/osys_main.cpp
+++ b/backends/platform/iphone/osys_main.cpp
@@ -229,29 +229,16 @@ OSystem *OSystem_IPHONE_create() {
 	return new OSystem_IPHONE();
 }
 
-Common::SeekableReadStream *OSystem_IPHONE::createConfigReadStream() {
+CCommon::String OSystem_IPHONE::getDefaultConfigFileName() {
 #ifdef IPHONE_OFFICIAL
-	char buf[256];
-	strncpy(buf, iPhone_getDocumentsDir(), 256);
-	strncat(buf, "/Preferences", 256 - strlen(buf) );
-	Common::FSNode file(buf);
+	Common::String path = iPhone_getDocumentsDir();
+	path += "/Preferences";
+	return path;
 #else
-	Common::FSNode file(SCUMMVM_PREFS_PATH);
+	return SCUMMVM_PREFS_PATH;
 #endif
-	return file.createReadStream();
 }
 
-Common::WriteStream *OSystem_IPHONE::createConfigWriteStream() {
-#ifdef IPHONE_OFFICIAL
-	char buf[256];
-	strncpy(buf, iPhone_getDocumentsDir(), 256);
-	strncat(buf, "/Preferences", 256 - strlen(buf) );
-	Common::FSNode file(buf);
-#else
-	Common::FSNode file(SCUMMVM_PREFS_PATH);
-#endif
-	return file.createWriteStream();
-}
 
 void OSystem_IPHONE::addSysArchivesToSearchSet(Common::SearchSet &s, int priority) {
 	// Get URL of the Resource directory of the .app bundle
diff --git a/backends/platform/iphone/osys_main.h b/backends/platform/iphone/osys_main.h
index 1ff87967a1..36b4b7356b 100644
--- a/backends/platform/iphone/osys_main.h
+++ b/backends/platform/iphone/osys_main.h
@@ -184,8 +184,7 @@ public:
 	void startSoundsystem();
 	void stopSoundsystem();
 
-	virtual Common::SeekableReadStream *createConfigReadStream();
-	virtual Common::WriteStream *createConfigWriteStream();
+	virtual Common::String getDefaultConfigFileName();
 
 protected:
 	void internUpdateScreen();