public static boolean isBreakpointAvailable(
final int id, final FileDownloadModel model, final String path) {
boolean result = false;
do {
if (path == null) {
if (FileDownloadLog.NEED_LOG) {
FileDownloadLog.d(FileDownloadMgr.class, "can't continue %d path = null", id);
}
break;
}
File file = new File(path);
final boolean isExists = file.exists();
final boolean isDirectory = file.isDirectory();
if (!isExists || isDirectory) {
if (FileDownloadLog.NEED_LOG) {
FileDownloadLog.d(
FileDownloadMgr.class,
"can't continue %d file not suit, exists[%B], directory[%B]",
id,
isExists,
isDirectory);
}
break;
}
final long fileLength = file.length();
if (model.getSoFar() == 0) {
if (FileDownloadLog.NEED_LOG) {
FileDownloadLog.d(
FileDownloadMgr.class, "can't continue %d the downloaded-record is zero.", id);
}
break;
}
if (fileLength < model.getSoFar()
|| (model.getTotal() != -1 // not chunk transfer encoding data
&& (fileLength > model.getTotal() || model.getSoFar() >= model.getTotal()))) {
// dirty data.
if (FileDownloadLog.NEED_LOG) {
FileDownloadLog.d(
FileDownloadMgr.class,
"can't continue %d dirty data" + " fileLength[%d] sofar[%d] total[%d]",
id,
fileLength,
model.getSoFar(),
model.getTotal());
}
break;
}
result = true;
} while (false);
return result;
}
public long getSoFar(final int id) {
final FileDownloadModel model = mHelper.find(id);
if (model == null) {
return 0;
}
return model.getSoFar();
}