100 lines
2.9 KiB
Java
100 lines
2.9 KiB
Java
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.thialfihar.android.apg;
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import java.io.ByteArrayOutputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.Serializable;
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import org.thialfihar.android.apg.R;
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import org.thialfihar.android.apg.Apg.GeneralException;
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import android.content.Context;
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import android.os.Environment;
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public class DataDestination implements Serializable {
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private static final long serialVersionUID = -6478075911319320498L;
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private String mStreamFilename;
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private String mFilename;
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private int mMode = Id.mode.undefined;
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public DataDestination() {
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}
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public void setMode(int mode) {
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mMode = mode;
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}
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public void setFilename(String filename) {
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mFilename = filename;
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}
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public String getStreamFilename() {
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return mStreamFilename;
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}
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public OutputStream getOutputStream(Context context) throws Apg.GeneralException,
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FileNotFoundException, IOException {
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OutputStream out = null;
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mStreamFilename = null;
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switch (mMode) {
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case Id.mode.stream: {
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try {
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while (true) {
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mStreamFilename = Apg.generateRandomString(32);
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if (mStreamFilename == null) {
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throw new Apg.GeneralException("couldn't generate random file name");
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}
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context.openFileInput(mStreamFilename).close();
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}
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} catch (FileNotFoundException e) {
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// found a name that isn't used yet
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}
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out = context.openFileOutput(mStreamFilename, Context.MODE_PRIVATE);
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break;
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}
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case Id.mode.byte_array: {
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out = new ByteArrayOutputStream();
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break;
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}
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case Id.mode.file: {
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if (mFilename.startsWith(Environment.getExternalStorageDirectory().getAbsolutePath())) {
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if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
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throw new GeneralException(
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context.getString(R.string.error_externalStorageNotReady));
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}
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}
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out = new FileOutputStream(mFilename);
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break;
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}
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default: {
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break;
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}
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}
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return out;
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}
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}
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