filesystem: SDL_SYS_EnumerateDirectory() now returns bool.

src/filesystem/SDL_filesystem.c

@@ -69,10 +69,7 @@ bool SDL_EnumerateDirectory(const char *path, SDL_EnumerateDirectoryCallback cal
     } else if (!callback) {
         return SDL_InvalidParamError("callback");
     }
-    if (SDL_SYS_EnumerateDirectory(path, path, callback, userdata) < 0) {
-        return false;
-    }
-    return true;
+    return SDL_SYS_EnumerateDirectory(path, path, callback, userdata);
 }
 
 bool SDL_GetPathInfo(const char *path, SDL_PathInfo *info)

src/filesystem/SDL_sysfilesystem.h

@@ -27,7 +27,7 @@ extern char *SDL_SYS_GetBasePath(void);
 extern char *SDL_SYS_GetPrefPath(const char *org, const char *app);
 extern char *SDL_SYS_GetUserFolder(SDL_Folder folder);
 
-extern int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata);
+extern bool SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata);
 extern bool SDL_SYS_RemovePath(const char *path);
 extern bool SDL_SYS_RenamePath(const char *oldpath, const char *newpath);
 extern bool SDL_SYS_CopyFile(const char *oldpath, const char *newpath);

src/filesystem/dummy/SDL_sysfsops.c

@@ -28,10 +28,9 @@
 
 #include "../SDL_sysfilesystem.h"
 
-int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
+bool SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
 {
-    SDL_Unsupported();
-    return -1;
+    return SDL_Unsupported();
 }
 
 bool SDL_SYS_RemovePath(const char *path)

src/filesystem/posix/SDL_sysfsops.c

@@ -34,7 +34,7 @@
 #include <dirent.h>
 #include <sys/stat.h>
 
-int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
+bool SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
 {
     int result = 1;
 
@@ -56,7 +56,7 @@ int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_Enumer
 
     closedir(dir);
 
-    return result;
+    return (result >= 0);
 }
 
 bool SDL_SYS_RemovePath(const char *path)

src/filesystem/windows/SDL_sysfsops.c

@@ -29,7 +29,7 @@
 #include "../../core/windows/SDL_windows.h"
 #include "../SDL_sysfilesystem.h"
 
-int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
+bool SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_EnumerateDirectoryCallback cb, void *userdata)
 {
     int result = 1;
     if (*path == '\0') {  // if empty (completely at the root), we need to enumerate drive letters.
@@ -88,7 +88,7 @@ int SDL_SYS_EnumerateDirectory(const char *path, const char *dirname, SDL_Enumer
         FindClose(dir);
     }
 
-    return result;
+    return (result >= 0);
 }
 
 bool SDL_SYS_RemovePath(const char *path)