/**
* Ensure that the destination folder exists.
*
* @param dest the final file name desired.
* @return true if we could ensure the prerequisites
*/
/* package */ boolean ensureFolderExists(final String dest) {
Log.d(LOG_TAG, "ensureFolderExists(" + dest + ") called");
if (null == dest) {
failureMessage = MSG_BAD_DEST;
downloadErrorCode = DownloadError.BAD_DESTINATION.getValue();
return false;
}
final File f = new File(dest);
final File dir = f.getParentFile();
// This can occur if the directory exists but another
// process is using it.
if (null == dir) {
failureMessage = MSG_BAD_DIR;
downloadErrorCode = DownloadError.BAD_DIRECTORY.getValue();
Log.e(LOG_TAG, failureMessage);
return false;
}
// mkdirs returns false if the directory already exists
// so check here before calling it.
if (dir.exists()) {
return true;
}
final boolean result = dir.mkdirs();
if (!result) {
failureMessage = MSG_COULDNT_MKDIR;
downloadErrorCode = DownloadError.COULDNT_MKDIR.getValue();
}
return result;
}
/**
* Ensure that a partial download file exists.
*
* @param dest the file to check
* @param offset how big we think it should be
* @return true if things look good
*/
/* package */ boolean ensurePartialFilePresent(final String dest, final long offset) {
if (null == dest) {
failureMessage = MSG_BAD_DEST;
downloadErrorCode = DownloadError.BAD_DESTINATION.getValue();
return false;
}
final File f = new File(dest);
final boolean result = f.exists() && f.length() >= offset;
if (!result) {
Log.d(LOG_TAG, "Bad partial file");
}
return result;
}
