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package de.thedevstack.conversationsplus.utils;
import android.annotation.SuppressLint;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.provider.OpenableColumns;
import java.io.File;
import java.util.List;
import de.thedevstack.conversationsplus.ConversationsPlusApplication;
public final class FileUtils {
/**
* Get a file path from a Uri. This will get the the path for Storage Access
* Framework Documents, as well as the _data field for the MediaStore and
* other file-based ContentProviders.
*
* @param uri The Uri to query.
* @author paulburke
*/
@SuppressLint("NewApi")
public static String getPath(final Uri uri) {
if (uri == null) {
return null;
}
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
final Context context = ConversationsPlusApplication.getAppContext();
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
String path = getDataColumn(context, uri, null, null);
if (path != null) {
File file = new File(path);
if (!file.canRead()) {
return null;
}
}
return path;
}
// File
else if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
private static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,null);
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(column_index);
}
} catch(Exception e) {
return null;
} finally {
if (cursor != null) {
cursor.close();
}
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param filename The filename to extract extension from
* @return last extension or empty string
*/
public static String getLastExtension(final String filename) {
if (filename == null || filename.isEmpty()) {
return "";
}
final int lastDotPosition = filename.lastIndexOf('.');
final String lastPart = lastDotPosition != -1 ?
filename.substring(lastDotPosition + 1) : "";
return lastPart;
}
/**
* @param filename The filename to extract extension from
* @return second to last extension or empty string
*/
public static String getSecondToLastExtension(final String filename) {
if (filename == null || filename.isEmpty()) {
return "";
}
final int lastDotPosition = filename.lastIndexOf('.');
final int secondToLastDotPosition = filename.lastIndexOf('.', lastDotPosition - 1);
final String secondToLastPart = secondToLastDotPosition != -1 ?
filename.substring(secondToLastDotPosition + 1, lastDotPosition) : "";
return secondToLastPart;
}
/**
* Retrieve file size from given uri
* @param context actual Context
* @param uri uri to file
* @return file size or -1 in case of error
*/
private static long getFileSize(Context context, Uri uri) {
Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
return cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
} else {
return -1;
}
}
/**
* Check for given list of uris if corresponding file sizes are all smaller than given maximum
* @param context actual Context
* @param uris list of uris
* @param max maximum file size
* @return true if all file sizes are smaller than max, false otherwise
*/
public static boolean allFilesUnderSize(Context context, List<Uri> uris, long max) {
if (max <= 0) {
return true; //exception to be compatible with HTTP Upload < v0.2
}
for(Uri uri : uris) {
if (getFileSize(context, uri) > max) {
return false;
}
}
return true;
}
private FileUtils() {
// Utility class - do not instantiate
}
}
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