base/android/content_uri_utils.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/android/content_uri_utils.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/jni_string.h"
   9 #include "jni/ContentUriUtils_jni.h"
  10
  11 using base::android::ConvertUTF8ToJavaString;
  12
  13 namespace base {
  14
  15 bool RegisterContentUriUtils(JNIEnv* env) {
  16   return RegisterNativesImpl(env);
  17 }
  18
  19 bool ContentUriExists(const FilePath& content_uri) {
  20   JNIEnv* env = base::android::AttachCurrentThread();
  21   ScopedJavaLocalRef<jstring> j_uri =
  22       ConvertUTF8ToJavaString(env, content_uri.value());
  23   return Java_ContentUriUtils_contentUriExists(
  24       env, base::android::GetApplicationContext(), j_uri.obj());
  25 }
  26
  27 File OpenContentUriForRead(const FilePath& content_uri) {
  28   JNIEnv* env = base::android::AttachCurrentThread();
  29   ScopedJavaLocalRef<jstring> j_uri =
  30       ConvertUTF8ToJavaString(env, content_uri.value());
  31   jint fd = Java_ContentUriUtils_openContentUriForRead(
  32       env, base::android::GetApplicationContext(), j_uri.obj());
  33   if (fd < 0)
  34     return File();
  35   return File(fd);
  36 }
  37
  38 std::string GetContentUriMimeType(const FilePath& content_uri) {
  39   JNIEnv* env = base::android::AttachCurrentThread();
  40   ScopedJavaLocalRef<jstring> j_uri =
  41       ConvertUTF8ToJavaString(env, content_uri.value());
  42   ScopedJavaLocalRef<jstring> j_mime =
  43       Java_ContentUriUtils_getMimeType(
  44           env, base::android::GetApplicationContext(), j_uri.obj());
  45   return base::android::ConvertJavaStringToUTF8(env, j_mime.obj());
  46 }
  47
  48 }  // namespace base