/*
* Copyright (C) 2015 Federico Iosue (federico.iosue@gmail.com)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package it.feio.android.omninotes.utils;
import android.annotation.SuppressLint;
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.text.TextUtils;
import android.util.Log;
import it.feio.android.omninotes.factory.MediaStoreFactory;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
public class FileHelper {
/**
* 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 context The context.
* @param uri The Uri to query.
*/
@SuppressLint("NewApi")
public static String getPath(final Context context, final Uri uri) {
if (uri == null)
return null;
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// 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];
MediaStoreFactory mediaStoreFactory = new MediaStoreFactory();
Uri contentUri = mediaStoreFactory.createURI(type);
final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(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.
*/
public 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) {
Log.e(Constants.TAG, "Error retrieving uri path", e);
} 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());
}
public static InputStream getInputStream(Context mContext, Uri mUri) {
InputStream inputStream;
try {
inputStream = mContext.getContentResolver().openInputStream(mUri);
inputStream.close();
return inputStream;
} catch (IOException e) {
return null;
}
}
/**
* Trying to retrieve file name from content resolver
*/
public static String getNameFromUri(Context mContext, Uri uri) {
String fileName = "";
Cursor cursor = null;
try {
cursor = mContext.getContentResolver().query(uri, new String[]{"_display_name"}, null, null, null);
if (cursor != null) {
try {
if (cursor.moveToFirst()) {
fileName = cursor.getString(0);
}
} catch (Exception e) {
Log.e(Constants.TAG, "Error managing diskk cache", e);
}
} else {
fileName = uri.getLastPathSegment();
}
} catch (SecurityException e) {
return null;
} finally {
if (cursor != null) {
cursor.close();
}
}
return fileName;
}
public static String getFilePrefix(File file) {
return getFilePrefix(file.getName());
}
public static String getFilePrefix(String fileName) {
String prefix = fileName;
int index = fileName.indexOf(".");
if (index != -1) {
prefix = fileName.substring(0, index);
}
return prefix;
}
public static String getFileExtension(File file) {
return getFileExtension(file.getName());
}
public static String getFileExtension(String fileName) {
if (TextUtils.isEmpty(fileName)) return "";
String extension = "";
int index = fileName.lastIndexOf(".");
if (index != -1) {
extension = fileName.substring(index, fileName.length());
}
return extension;
}
}