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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.inputmethod.latin;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Environment;
import com.android.inputmethod.latin.makedict.FormatSpec.FileHeader;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Locale;
/**
* A class to read a local file as a dictionary for debugging purposes.
*/
public class ExternalDictionaryGetterForDebug {
private static final String SOURCE_FOLDER = Environment.getExternalStorageDirectory().getPath()
+ "/Download";
private static final String DICTIONARY_LOCALE_ATTRIBUTE = "locale";
private static String[] findDictionariesInTheDownloadedFolder() {
final File[] files = new File(SOURCE_FOLDER).listFiles();
final ArrayList<String> eligibleList = CollectionUtils.newArrayList();
for (File f : files) {
final FileHeader header = DictionaryInfoUtils.getDictionaryFileHeaderOrNull(f);
if (null == header) continue;
eligibleList.add(f.getName());
}
return eligibleList.toArray(new String[0]);
}
public static void chooseAndInstallDictionary(final Context context) {
final String[] fileNames = findDictionariesInTheDownloadedFolder();
if (0 == fileNames.length) {
showNoFileDialog(context);
} else if (1 == fileNames.length) {
askInstallFile(context, fileNames[0]);
} else {
showChooseFileDialog(context, fileNames);
}
}
private static void showNoFileDialog(final Context context) {
new AlertDialog.Builder(context)
.setMessage(R.string.read_external_dictionary_no_files_message)
.setPositiveButton(android.R.string.ok, new OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
dialog.dismiss();
}
}).create().show();
}
private static void showChooseFileDialog(final Context context, final String[] fileNames) {
final AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle(R.string.read_external_dictionary_multiple_files_title)
.setItems(fileNames, new OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
askInstallFile(context, fileNames[which]);
}
})
.create().show();
}
private static void askInstallFile(final Context context, final String fileName) {
final File file = new File(SOURCE_FOLDER, fileName.toString());
final FileHeader header = DictionaryInfoUtils.getDictionaryFileHeaderOrNull(file);
final StringBuilder message = new StringBuilder();
final String locale =
header.mDictionaryOptions.mAttributes.get(DICTIONARY_LOCALE_ATTRIBUTE);
for (String key : header.mDictionaryOptions.mAttributes.keySet()) {
message.append(key + " = " + header.mDictionaryOptions.mAttributes.get(key));
message.append("\n");
}
final String languageName = LocaleUtils.constructLocaleFromString(locale)
.getDisplayName(Locale.getDefault());
final String title = String.format(
context.getString(R.string.read_external_dictionary_confirm_install_message),
languageName);
new AlertDialog.Builder(context)
.setTitle(title)
.setMessage(message)
.setNegativeButton(android.R.string.cancel, new OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
dialog.dismiss();
}
}).setPositiveButton(android.R.string.ok, new OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
installFile(context, file, header);
dialog.dismiss();
}
}).create().show();
}
private static void installFile(final Context context, final File file,
final FileHeader header) {
BufferedOutputStream outputStream = null;
File tempFile = null;
try {
final String locale =
header.mDictionaryOptions.mAttributes.get(DICTIONARY_LOCALE_ATTRIBUTE);
// Create the id for a main dictionary for this locale
final String id = BinaryDictionaryGetter.MAIN_DICTIONARY_CATEGORY
+ BinaryDictionaryGetter.ID_CATEGORY_SEPARATOR + locale;
final String finalFileName =
DictionaryInfoUtils.getCacheFileName(id, locale, context);
final String tempFileName = BinaryDictionaryGetter.getTempFileName(id, context);
tempFile = new File(tempFileName);
tempFile.delete();
outputStream = new BufferedOutputStream(new FileOutputStream(tempFile));
final BufferedInputStream bufferedStream = new BufferedInputStream(
new FileInputStream(file));
BinaryDictionaryFileDumper.checkMagicAndCopyFileTo(bufferedStream, outputStream);
outputStream.flush();
final File finalFile = new File(finalFileName);
finalFile.delete();
if (!tempFile.renameTo(finalFile)) {
throw new IOException("Can't move the file to its final name");
}
} catch (IOException e) {
// There was an error: show a dialog
new AlertDialog.Builder(context)
.setTitle(R.string.error)
.setMessage(e.toString())
.setPositiveButton(android.R.string.ok, new OnClickListener() {
@Override
public void onClick(final DialogInterface dialog, final int which) {
dialog.dismiss();
}
}).create().show();
return;
} finally {
try {
if (null != outputStream) outputStream.close();
if (null != tempFile) tempFile.delete();
} catch (IOException e) {
// Don't do anything
}
}
}
}
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