Function Java_java_io_File_length

classpath/java-io.cpp:294–346

}

extern "C" JNIEXPORT jlong JNICALL
    Java_java_io_File_length(JNIEnv* e, jclass, jstring path)
{
#ifdef PLATFORM_WINDOWS
  // Option: without opening file
  // http://msdn.microsoft.com/en-us/library/windows/desktop/aa364946(v=vs.85).aspx
  string_t chars = getChars(e, path);
  if (chars) {
    LARGE_INTEGER fileSize;
#if !defined(WINAPI_FAMILY) || WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
    HANDLE file = CreateFileW(
        chars, FILE_READ_DATA, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
#else
    HANDLE file = CreateFile2(
        chars, GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING, nullptr);
#endif
    releaseChars(e, path, chars);
    if (file == INVALID_HANDLE_VALUE)
      return 0;
#if !defined(WINAPI_FAMILY) || WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
    if (!GetFileSizeEx(file, &fileSize)) {
      CloseHandle(file);
      return 0;
    }
#else
    FILE_STANDARD_INFO info;
    if (!GetFileInformationByHandleEx(
            file, FileStandardInfo, &info, sizeof(info))) {
      CloseHandle(file);
      return 0;
    }
    fileSize = info.EndOfFile;
#endif

    CloseHandle(file);
    return static_cast<jlong>(fileSize.QuadPart);
  }
#else

  string_t chars = getChars(e, path);
  if (chars) {
    STRUCT_STAT s;
    int r = STAT(chars, &s);
    releaseChars(e, path, chars);
    if (r == 0) {
      return s.st_size;
    }
  }

#endif

  return 0;
}

extern "C" JNIEXPORT void JNICALL
    Java_java_io_File_mkdir(JNIEnv* e, jclass, jstring path)