private String getFileContents(Drive drive, String downloadUrl) {
if (!TextUtils.isEmpty(downloadUrl)) {
try {
HttpResponse resp =
drive.getRequestFactory().buildGetRequest(new GenericUrl(downloadUrl)).execute();
final char[] buffer = new char[1024];
final StringBuilder out = new StringBuilder();
Reader in = null;
try {
in = new InputStreamReader(resp.getContent(), "UTF-8");
for (; ; ) {
int rsz = in.read(buffer, 0, buffer.length);
if (rsz < 0) break;
out.append(buffer, 0, rsz);
}
} finally {
in.close();
}
return out.toString();
} catch (IOException e) {
Log.e(getClass().getSimpleName(), "Error downloading file contenst", e);
}
}
return null;
}
/**
* Retrieve a Google Drive file's content.
*
* @param driveFile Google Drive file to retrieve content from.
* @return Google Drive file's content if successful, {@code null} otherwise.
*/
public String getFileContent(File driveFile) {
String result = "";
if (driveFile.getDownloadUrl() != null && driveFile.getDownloadUrl().length() > 0) {
try {
GenericUrl downloadUrl = new GenericUrl(driveFile.getDownloadUrl());
HttpResponse resp = mService.getRequestFactory().buildGetRequest(downloadUrl).execute();
InputStream inputStream = null;
try {
inputStream = resp.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder content = new StringBuilder();
char[] buffer = new char[1024];
int num;
while ((num = reader.read(buffer)) > 0) {
content.append(buffer, 0, num);
}
result = content.toString();
} finally {
if (inputStream != null) {
inputStream.close();
}
}
} catch (IOException e) {
// An error occurred.
e.printStackTrace();
return null;
}
} else {
// The file doesn't have any content stored on Drive.
return null;
}
return result;
}
protected InputStream getContentStream(String downloadURL) throws PortalException {
if (Validator.isNull(downloadURL)) {
return null;
}
Drive drive = getDrive();
HttpRequestFactory httpRequestFactory = drive.getRequestFactory();
GenericUrl genericUrl = new GenericUrl(downloadURL);
try {
HttpRequest httpRequest = httpRequestFactory.buildGetRequest(genericUrl);
HttpResponse httpResponse = httpRequest.execute();
return httpResponse.getContent();
} catch (IOException ioe) {
_log.error(ioe, ioe);
throw new SystemException(ioe);
}
}