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Make the DictionaryService stage the downloaded files 

Bug: 20641948
Change-Id: I6639c995b12c033bc30241cd219201dd483ee516
main
Mohammadinamul Sheik 2015-05-04 11:57:31 -07:00
parent 459b4f353e
commit a0d9c82921
6 changed files with 122 additions and 52 deletions
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14
common/src/com/android/inputmethod/latin/common/FileUtils.java
View File

@ -16,6 +16,8 @@
package com.android.inputmethod.latin.common;
import android.util.Log;
import java.io.File;
import java.io.FilenameFilter;
@ -23,6 +25,8 @@ import java.io.FilenameFilter;
* A simple class to help with removing directories recursively.
*/
public class FileUtils {
private static final String TAG = "FileUtils";
public static boolean deleteRecursively(final File path) {
if (path.isDirectory()) {
final File[] files = path.listFiles();
@ -51,4 +55,14 @@ public class FileUtils {
}
return hasDeletedAllFiles;
}
public static boolean renameTo(final File fromFile, final File toFile) {
toFile.delete();
final boolean success = fromFile.renameTo(toFile);
if (!success) {
Log.e(TAG, String.format("Failed to rename from %s to %s.",
fromFile.getAbsoluteFile(), toFile.getAbsoluteFile()));
}
return success;
}
}

10
java/src/com/android/inputmethod/dictionarypack/ActionBatch.java
View File

@ -26,7 +26,9 @@ import android.text.TextUtils;
import android.util.Log;
import com.android.inputmethod.compat.DownloadManagerCompatUtils;
import com.android.inputmethod.latin.BinaryDictionaryFileDumper;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.common.LocaleUtils;
import com.android.inputmethod.latin.utils.ApplicationUtils;
import com.android.inputmethod.latin.utils.DebugLogUtils;
@ -210,9 +212,17 @@ public final class ActionBatch {
+ " for an InstallAfterDownload action. Bailing out.");
return;
}
DebugLogUtils.l("Setting word list as installed");
final SQLiteDatabase db = MetadataDbHelper.getDb(context, mClientId);
MetadataDbHelper.markEntryAsFinishedDownloadingAndInstalled(db, mWordListValues);
// Install the downloaded file by un-compressing and moving it to the staging
// directory. Ideally, we should do this before updating the DB, but the
// installDictToStagingFromContentProvider() relies on the db being updated.
final String localeString = mWordListValues.getAsString(MetadataDbHelper.LOCALE_COLUMN);
BinaryDictionaryFileDumper.installDictToStagingFromContentProvider(
LocaleUtils.constructLocaleFromString(localeString), context, false);
}
}

2
java/src/com/android/inputmethod/dictionarypack/UpdateHandler.java
View File

@ -592,6 +592,8 @@ public final class UpdateHandler {
* Warn Android Keyboard that the state of dictionaries changed and it should refresh its data.
*/
private static void signalNewDictionaryState(final Context context) {
// TODO: Also provide the locale of the updated dictionary so that the LatinIme
// does not have to reset if it is a different locale.
final Intent newDictBroadcast =
new Intent(DictionaryPackConstants.NEW_DICTIONARY_INTENT_ACTION);
context.sendBroadcast(newDictBroadcast);

39
java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java
View File

@ -29,6 +29,7 @@ import android.util.Log;
import com.android.inputmethod.dictionarypack.DictionaryPackConstants;
import com.android.inputmethod.dictionarypack.MD5Calculator;
import com.android.inputmethod.latin.common.FileUtils;
import com.android.inputmethod.latin.define.DecoderSpecificConstants;
import com.android.inputmethod.latin.utils.DictionaryInfoUtils;
import com.android.inputmethod.latin.utils.DictionaryInfoUtils.DictionaryInfo;
@ -220,11 +221,11 @@ public final class BinaryDictionaryFileDumper {
}
/**
* Caches a word list the id of which is passed as an argument. This will write the file
* Stages a word list the id of which is passed as an argument. This will write the file
* to the cache file name designated by its id and locale, overwriting it if already present
* and creating it (and its containing directory) if necessary.
*/
private static void cacheWordList(final String wordlistId, final String locale,
private static void installWordListToStaging(final String wordlistId, final String locale,
final String rawChecksum, final ContentProviderClient providerClient,
final Context context) {
final int COMPRESSED_CRYPTED_COMPRESSED = 0;
@ -246,7 +247,7 @@ public final class BinaryDictionaryFileDumper {
return;
}
final String finalFileName =
DictionaryInfoUtils.getCacheFileName(wordlistId, locale, context);
DictionaryInfoUtils.getStagingFileName(wordlistId, locale, context);
String tempFileName;
try {
tempFileName = BinaryDictionaryGetter.getTempFileName(wordlistId, context);
@ -320,23 +321,21 @@ public final class BinaryDictionaryFileDumper {
}
}
// move the output file to the final staging file.
final File finalFile = new File(finalFileName);
finalFile.delete();
if (!outputFile.renameTo(finalFile)) {
throw new IOException("Can't move the file to its final name");
}
FileUtils.renameTo(outputFile, finalFile);
wordListUriBuilder.appendQueryParameter(QUERY_PARAMETER_DELETE_RESULT,
QUERY_PARAMETER_SUCCESS);
if (0 >= providerClient.delete(wordListUriBuilder.build(), null, null)) {
Log.e(TAG, "Could not have the dictionary pack delete a word list");
}
BinaryDictionaryGetter.removeFilesWithIdExcept(context, wordlistId, finalFile);
Log.e(TAG, "Successfully copied file for wordlist ID " + wordlistId);
Log.d(TAG, "Successfully copied file for wordlist ID " + wordlistId);
// Success! Close files (through the finally{} clause) and return.
return;
} catch (Exception e) {
if (DEBUG) {
Log.i(TAG, "Can't open word list in mode " + mode, e);
Log.e(TAG, "Can't open word list in mode " + mode, e);
}
if (null != outputFile) {
// This may or may not fail. The file may not have been created if the
@ -403,7 +402,7 @@ public final class BinaryDictionaryFileDumper {
}
/**
* Queries a content provider for word list data for some locale and cache the returned files
* Queries a content provider for word list data for some locale and stage the returned files
*
* This will query a content provider for word list data for a given locale, and copy the
* files locally so that they can be mmap'ed. This may overwrite previously cached word lists
@ -411,7 +410,7 @@ public final class BinaryDictionaryFileDumper {
* @throw FileNotFoundException if the provider returns non-existent data.
* @throw IOException if the provider-returned data could not be read.
*/
public static void cacheWordListsFromContentProvider(final Locale locale,
public static void installDictToStagingFromContentProvider(final Locale locale,
final Context context, final boolean hasDefaultWordList) {
final ContentProviderClient providerClient;
try {
@ -429,13 +428,27 @@ public final class BinaryDictionaryFileDumper {
final List<WordListInfo> idList = getWordListWordListInfos(locale, context,
hasDefaultWordList);
for (WordListInfo id : idList) {
cacheWordList(id.mId, id.mLocale, id.mRawChecksum, providerClient, context);
installWordListToStaging(id.mId, id.mLocale, id.mRawChecksum, providerClient,
context);
}
} finally {
providerClient.release();
}
}
/**
* Downloads the dictionary if it was never requested/used.
*
* @param locale locale to download
* @param context the context for resources and providers.
* @param hasDefaultWordList whether the default wordlist exists in the resources.
*/
public static void downloadDictIfNeverRequested(final Locale locale,
final Context context, final boolean hasDefaultWordList) {
Log.d("inamul_tag", "BinaryDictionaryFileDumper.downloadDictIfNeverRequested()");
getWordListWordListInfos(locale, context, hasDefaultWordList);
}
/**
* Copies the data in an input stream to a target file if the magic number matches.
*

47
java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java
View File

@ -195,39 +195,6 @@ final public class BinaryDictionaryGetter {
return result;
}
/**
* Remove all files with the passed id, except the passed file.
*
* If a dictionary with a given ID has a metadata change that causes it to change
* path, we need to remove the old version. The only way to do this is to check all
* installed files for a matching ID in a different directory.
*/
public static void removeFilesWithIdExcept(final Context context, final String id,
final File fileToKeep) {
try {
final File canonicalFileToKeep = fileToKeep.getCanonicalFile();
final File[] directoryList = DictionaryInfoUtils.getCachedDirectoryList(context);
if (null == directoryList) return;
for (File directory : directoryList) {
// There is one directory per locale. See #getCachedDirectoryList
if (!directory.isDirectory()) continue;
final File[] wordLists = directory.listFiles();
if (null == wordLists) continue;
for (File wordList : wordLists) {
final String fileId =
DictionaryInfoUtils.getWordListIdFromFileName(wordList.getName());
if (fileId.equals(id)) {
if (!canonicalFileToKeep.equals(wordList.getCanonicalFile())) {
wordList.delete();
}
}
}
}
} catch (java.io.IOException e) {
Log.e(TAG, "IOException trying to cleanup files", e);
}
}
// ## HACK ## we prevent usage of a dictionary before version 18. The reason for this is, since
// those do not include whitelist entries, the new code with an old version of the dictionary
// would lose whitelist functionality.
@ -274,12 +241,18 @@ final public class BinaryDictionaryGetter {
*/
public static ArrayList<AssetFileAddress> getDictionaryFiles(final Locale locale,
final Context context, boolean notifyDictionaryPackForUpdates) {
if (notifyDictionaryPackForUpdates) {
final boolean hasDefaultWordList = DictionaryInfoUtils.isDictionaryAvailable(
context, locale);
if (notifyDictionaryPackForUpdates) {
BinaryDictionaryFileDumper.cacheWordListsFromContentProvider(locale, context,
hasDefaultWordList);
// It makes sure that the first time keyboard comes up and the dictionaries are reset,
// the DB is populated with the appropriate values for each locale. Helps in downloading
// the dictionaries when the user enables and switches new languages before the
// DictionaryService runs.
BinaryDictionaryFileDumper.downloadDictIfNeverRequested(
locale, context, hasDefaultWordList);
// Move a staging files to the cache ddirectories if any.
DictionaryInfoUtils.moveStagingFilesIfExists(context);
}
final File[] cachedWordLists = getCachedWordLists(locale.toString(), context);
final String mainDictId = DictionaryInfoUtils.getMainDictId(locale);

60
java/src/com/android/inputmethod/latin/utils/DictionaryInfoUtils.java
View File

@ -30,6 +30,7 @@ import com.android.inputmethod.latin.AssetFileAddress;
import com.android.inputmethod.latin.BinaryDictionaryGetter;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.RichInputMethodManager;
import com.android.inputmethod.latin.common.FileUtils;
import com.android.inputmethod.latin.common.LocaleUtils;
import com.android.inputmethod.latin.define.DecoderSpecificConstants;
import com.android.inputmethod.latin.makedict.DictionaryHeader;
@ -152,6 +153,13 @@ public class DictionaryInfoUtils {
return context.getFilesDir() + File.separator + "dicts";
}
/**
* Helper method to get the top level cache directory.
*/
public static String getWordListStagingDirectory(final Context context) {
return context.getFilesDir() + File.separator + "staging";
}
/**
* Helper method to get the top level temp directory.
*/
@ -188,6 +196,10 @@ public class DictionaryInfoUtils {
return new File(DictionaryInfoUtils.getWordListCacheDirectory(context)).listFiles();
}
public static File[] getStagingDirectoryList(final Context context) {
return new File(DictionaryInfoUtils.getWordListStagingDirectory(context)).listFiles();
}
@Nullable
public static File[] getUnusedDictionaryList(final Context context) {
return context.getFilesDir().listFiles(new FilenameFilter() {
@ -221,7 +233,7 @@ public class DictionaryInfoUtils {
/**
* Find out the cache directory associated with a specific locale.
*/
private static String getCacheDirectoryForLocale(final String locale, final Context context) {
public static String getCacheDirectoryForLocale(final String locale, final Context context) {
final String relativeDirectoryName = replaceFileNameDangerousCharacters(locale);
final String absoluteDirectoryName = getWordListCacheDirectory(context) + File.separator
+ relativeDirectoryName;
@ -254,6 +266,52 @@ public class DictionaryInfoUtils {
return getCacheDirectoryForLocale(locale, context) + File.separator + fileName;
}
public static String getStagingFileName(String id, String locale, Context context) {
final String stagingDirectory = getWordListStagingDirectory(context);
// create the directory if it does not exist.
final File directory = new File(stagingDirectory);
if (!directory.exists()) {
if (!directory.mkdirs()) {
Log.e(TAG, "Could not create the staging directory.");
}
}
// e.g. id="main:en_in", locale ="en_IN"
final String fileName = replaceFileNameDangerousCharacters(
locale + TEMP_DICT_FILE_SUB + id);
return stagingDirectory + File.separator + fileName;
}
public static void moveStagingFilesIfExists(Context context) {
final File[] stagingFiles = DictionaryInfoUtils.getStagingDirectoryList(context);
if (stagingFiles != null && stagingFiles.length > 0) {
for (final File stagingFile : stagingFiles) {
final String fileName = stagingFile.getName();
final int index = fileName.indexOf(TEMP_DICT_FILE_SUB);
if (index == -1) {
// This should never happen.
Log.e(TAG, "Staging file does not have ___ substring.");
continue;
}
final String[] localeAndFileId = fileName.split(TEMP_DICT_FILE_SUB);
if (localeAndFileId.length != 2) {
Log.e(TAG, String.format("malformed staging file %s. Deleting.",
stagingFile.getAbsoluteFile()));
stagingFile.delete();
continue;
}
final String locale = localeAndFileId[0];
// already escaped while moving to staging.
final String fileId = localeAndFileId[1];
final String cacheDirectoryForLocale = getCacheDirectoryForLocale(locale, context);
final String cacheFilename = cacheDirectoryForLocale + File.separator + fileId;
final File cacheFile = new File(cacheFilename);
// move the staging file to cache file.
FileUtils.renameTo(stagingFile, cacheFile);
}
}
}
public static boolean isMainWordListId(final String id) {
final String[] idArray = id.split(BinaryDictionaryGetter.ID_CATEGORY_SEPARATOR);
// An id is supposed to be in format category:locale, so splitting on the separator