- add a few more filesystem functions specific for android

Author: polymonster

core/pen/source/android/file_system.cpp

@@ -8,28 +8,19 @@
 #include "pen.h"
 #include "pen_string.h"
 
-namespace pen
-{
-    bool filesystem_file_exists(const c8* filename)
-    {
-        return false;
-    }
+#include <sys/stat.h>
 
-    /*
-    pen_error filesystem_read_file_to_buffer(const c8* filename, void** p_buffer, u32& buffer_size)
-    {
-        return PEN_ERR_FILE_NOT_FOUND;
-    }
-    */
 
+namespace pen
+{
     pen_error filesystem_enum_volumes(fs_tree_node& results)
     {
         return PEN_ERR_OK;
     }
 
     void filesystem_toggle_hidden_files()
     {
-
+        // stub
     }
 
     bool match_file(struct dirent* ent, s32 num_wildcards, va_list wildcards)
@@ -54,17 +45,13 @@ namespace pen
 
     pen_error filesystem_getmtime(const c8* filename, u32& mtime_out)
     {
-        return PEN_ERR_OK;
-    }
-
-    size_t filesystem_getsize(const c8* filename)
-    {
-        return 0;
-    }
+        struct stat st;
+        if (stat(filename, &st) == 0) {
+            mtime_out = (u32)st.st_mtime; // modification time
+            return PEN_ERR_OK;
+        }
 
-    const c8* filesystem_get_user_directory()
-    {
-        return nullptr;
+        return PEN_ERR_FILE_NOT_FOUND;
     }
 
     const c8** filesystem_get_user_directory(s32& directory_depth)

core/pen/source/android/os.cpp

@@ -17,9 +17,9 @@
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
+// setup diig android build
 // filesystem functions
 // openURL etc
-// sort out fmod version
 
 // BLOG NOTES:
 // - gradle version, always changing, sdk etc bs bs bs
@@ -48,6 +48,7 @@
 // touch input events
 // orientation changes
 // debug info? on device
+// sort out fmod version
 
 #define PEN_JNIFUNC(ret, actname, funcname) extern "C" JNIEXPORT ret JNICALL Java_cc_pmtech_##actname##_##funcname
 
@@ -92,6 +93,7 @@ namespace
     {
         pen::window_frame           window;
         pen::pen_creation_params    params;
+        Str                         user_dir;
     };
     pmtech_context s_pmtech_context;
 }
@@ -117,6 +119,13 @@ PEN_JNIFUNC(void, pen_1activity, register_1asset_1manager)(JNIEnv* env, jclass t
     s_android_context.m_asset_manager = AAssetManager_fromJava(env, asset_manager);
 }
 
+
+PEN_JNIFUNC(void, pen_1activity, set_1persistent_1data_1dir)(JNIEnv* env, jobject thiz, jstring cache_dir)
+{
+    jboolean iscopy;
+    s_pmtech_context.user_dir = env->GetStringUTFChars(cache_dir, &iscopy);
+}
+
 PEN_JNIFUNC(void, SurfaceWrapper, render)(JNIEnv* env, jclass thiz, jobject caller)
 {
     pen::os_update();
@@ -303,6 +312,38 @@ namespace pen
         return false;
     }
 
+    const c8* filesystem_get_user_directory()
+    {
+        return s_pmtech_context.user_dir.c_str();
+    }
+
+    bool filesystem_file_exists(const c8* filename)
+    {
+        AAsset* asset = AAssetManager_open(s_android_context.m_asset_manager, filename, AASSET_MODE_STREAMING);
+        
+        if(asset)
+        {
+            AAsset_close(asset);
+            return true;
+        }
+
+        return false;
+    }
+
+    size_t filesystem_getsize(const c8* filename)
+    {
+        AAsset* asset = AAssetManager_open(s_android_context.m_asset_manager, filename, AASSET_MODE_STREAMING);
+        if(asset)
+        {
+            off64_t length = AAsset_getLength64(asset);
+            AAsset_close(asset);
+
+            return length;
+        }
+
+        return 0;
+    }
+
     pen_error filesystem_read_file_to_buffer(const c8* filename, void** p_buffer, u32& buffer_size)
     {
         AAsset* asset = AAssetManager_open(s_android_context.m_asset_manager, filename, AASSET_MODE_STREAMING);

core/template/android/activity/pen_activity.java

@@ -224,6 +224,7 @@ public class pen_activity extends Activity {
 
 	public static native void entry();
     public static native void register_asset_manager(AssetManager asset_manager);
+    public static native void set_persistent_data_dir(String cache_dir);
 
     void set_immersive_mode()
     {
@@ -249,6 +250,7 @@ protected void onCreate(Bundle arg0) {
         entry();
 
         // register asset manager
+        set_persistent_data_dir(this.getCacheDir().getPath());
         register_asset_manager(getApplicationContext().getAssets());
 
         // setup view / surface