add create directory api for iOS and macOS

src/asset.cpp

@@ -4,6 +4,7 @@
 
 #ifdef __APPLE__
 #include <Foundation/Foundation.h>
+#include "objc_utils.h"
 #endif
 
 #ifdef __ANDROID__
@@ -141,6 +142,8 @@ bool Asset::create_dir(const std::string& path)
     return PathFileExistsA(path.c_str()) ? true : CreateDirectoryA(path.c_str(), NULL);
 #elif __ANDROID__
     return android_create_dir(path);
+#elif __IOS__ || __OSX__
+    return apple_create_dir(path);
 #endif
 }
 

src/objc_utils.cpp

@@ -334,3 +334,17 @@ void save_image_library(const std::string& path)
     }];
 #endif
 }
+
+bool apple_create_dir(const std::string& path)
+{
+    NSError* err = nil;
+    NSString* p = [NSString stringWithUTF8String:(path+"/").c_str()];
+    NSURL* url = [NSURL fileURLWithPath:p isDirectory:YES];
+    if (![[NSFileManager defaultManager] createDirectoryAtURL:url withIntermediateDirectories:YES attributes:nil error:&err])
+    {
+        LOG("error creating path: %s", path.c_str());
+        LOG("error creating path: %s", [[err description] cStringUsingEncoding:NSUTF8StringEncoding]);
+        return false;
+    }
+    return true;
+}

src/objc_utils.h

@@ -15,3 +15,4 @@ void uinstall_global_handlers();
 void delete_all_files_in_path(const std::string& source_path);
 void export_mp4(const std::string& rec_path, int width, int height, int tot, void(^progress_callback)(float));
 void save_image_library(const std::string& path);
+bool apple_create_dir(const std::string& path);