macos: add portable.txt as flag for portable install (#16244)

file_path_special.c

@@ -103,48 +103,53 @@ bool fill_pathname_application_data(char *s, size_t len)
 
 #elif defined(OSX)
    CFBundleRef bundle = CFBundleGetMainBundle();
-   bool portable = false;
    if (!bundle)
       return false;
+
+   /* get the directory containing the app */
+   CFStringRef parent_path;
+   CFURLRef bundle_url, parent_url;
+   bundle_url  = CFBundleCopyBundleURL(bundle);
+   parent_url  = CFURLCreateCopyDeletingLastPathComponent(NULL, bundle_url);
+   parent_path = CFURLCopyFileSystemPath(parent_url, kCFURLPOSIXPathStyle);
+   CFStringGetCString(parent_path, s, len, kCFStringEncodingUTF8);
+   CFRelease(parent_path);
+   CFRelease(parent_url);
+   CFRelease(bundle_url);
+
 #if HAVE_STEAM
-   portable = true;
+   return true;
 #else
+   /* if portable.txt exists next to the app then we use that directory */
+   char portable_buf[PATH_MAX_LENGTH] = {0};
+   fill_pathname_join(portable_buf, s, "portable.txt", sizeof(portable_buf));
+   if (path_is_valid(portable_buf))
+      return true;
+
+   /* if the app itself says it's portable we obey that as well */
    CFStringRef key = CFStringCreateWithCString(NULL, "RAPortableInstall", kCFStringEncodingUTF8);
    if (key)
    {
       CFBooleanRef val = CFBundleGetValueForInfoDictionaryKey(bundle, key);
+      CFRelease(key);
       if (val)
       {
-         portable = CFBooleanGetValue(val);
+         bool portable = CFBooleanGetValue(val);
          CFRelease(val);
+         if (portable)
+            return true;
       }
-      CFRelease(key);
+   }
+
+   /* otherwise we use ~/Library/Application Support/RetroArch */
+   const char *appdata = getenv("HOME");
+   if (appdata)
+   {
+      fill_pathname_join(s, appdata,
+                         "Library/Application Support/RetroArch", len);
+      return true;
    }
 #endif
-   if (portable)
-   {
-       CFStringRef parent_path;
-       CFURLRef bundle_url, parent_url;
-       bundle_url  = CFBundleCopyBundleURL(bundle);
-       parent_url  = CFURLCreateCopyDeletingLastPathComponent(NULL, bundle_url);
-       parent_path = CFURLCopyFileSystemPath(parent_url, kCFURLPOSIXPathStyle);
-       CFStringGetCString(parent_path, s, len, kCFStringEncodingUTF8);
-       CFRelease(parent_path);
-       CFRelease(parent_url);
-       CFRelease(bundle_url);
-       return true;
-   }
-   else
-   {
-       const char *appdata = getenv("HOME");
-
-       if (appdata)
-       {
-           fill_pathname_join(s, appdata,
-                              "Library/Application Support/RetroArch", len);
-           return true;
-       }
-   }
 #elif defined(RARCH_UNIX_CWD_ENV)
    getcwd(s, len);
    return true;

frontend/drivers/platform_darwin.m

@@ -344,7 +344,6 @@ static void frontend_darwin_get_env(int *argc, char *argv[],
    char documents_dir_buf[PATH_MAX_LENGTH] = {0};
    char application_data[PATH_MAX_LENGTH]  = {0};
    CFBundleRef bundle                      = CFBundleGetMainBundle();
-   BOOL portable;
 
    if (!bundle)
       return;
@@ -354,36 +353,36 @@ static void frontend_darwin_get_env(int *argc, char *argv[],
    CFStringGetCString(bundle_path, bundle_path_buf, sizeof(bundle_path_buf), kCFStringEncodingUTF8);
    CFRelease(bundle_path);
    CFRelease(bundle_url);
+   path_resolve_realpath(bundle_path_buf, sizeof(bundle_path_buf), true);
 
+#if defined(OSX)
+   fill_pathname_application_data(application_data, sizeof(application_data));
+
+   BOOL portable; /* steam || RAPortableInstall || portable.txt */
 #if HAVE_STEAM
    /* For Steam, we're going to put everything next to the .app */
    portable = YES;
 #else
    portable = [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"RAPortableInstall"] boolValue];
+   if (!portable)
+   {
+      char portable_buf[PATH_MAX_LENGTH] = {0};
+      fill_pathname_join(portable_buf, application_data, "portable.txt", sizeof(portable_buf));
+      portable = path_is_valid(portable_buf);
+   }
 #endif
    if (portable)
-      fill_pathname_application_data(documents_dir_buf, sizeof(documents_dir_buf));
+      strncpy(documents_dir_buf, application_data, sizeof(documents_dir_buf));
    else
    {
       CFSearchPathForDirectoriesInDomains(documents_dir_buf, sizeof(documents_dir_buf));
-#if TARGET_OS_IPHONE
+      path_resolve_realpath(documents_dir_buf, sizeof(documents_dir_buf), true);
-      char resolved_documents_dir_buf[PATH_MAX_LENGTH] = {0};
-      char resolved_bundle_dir_buf[PATH_MAX_LENGTH] = {0};
-      if (realpath(documents_dir_buf, resolved_documents_dir_buf))
-         strlcpy(documents_dir_buf,
-                 resolved_documents_dir_buf,
-                 sizeof(documents_dir_buf));
-      if (realpath(bundle_path_buf, resolved_bundle_dir_buf))
-         strlcpy(bundle_path_buf,
-                 resolved_bundle_dir_buf,
-                 sizeof(bundle_path_buf));
-#endif
       strlcat(documents_dir_buf, "/RetroArch", sizeof(documents_dir_buf));
    }
-
-#if defined(OSX)
-   fill_pathname_application_data(application_data, sizeof(application_data));
 #else
+   CFSearchPathForDirectoriesInDomains(documents_dir_buf, sizeof(documents_dir_buf));
+   path_resolve_realpath(documents_dir_buf, sizeof(documents_dir_buf), true);
+   strlcat(documents_dir_buf, "/RetroArch", sizeof(documents_dir_buf));
    /* iOS and tvOS are going to put everything in the documents dir */
    strncpy(application_data, documents_dir_buf, sizeof(application_data));
 #endif