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Merge "Change the dictionary file passing schema to a list of ids"

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This commit is contained in:
Jean Chalard 2011-08-02 21:02:11 -07:00 committed by Android (Google) Code Review
commit 81f227de5a
2 changed files with 72 additions and 37 deletions
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60
java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java
View file

@ -20,8 +20,10 @@ import android.content.ContentResolver;
import android.content.Context;
import android.content.res.AssetFileDescriptor;
import android.content.res.Resources;
import android.database.Cursor;
import android.net.Uri;
import android.text.TextUtils;
import android.util.Log;
import java.io.File;
import java.io.FileInputStream;
@ -29,7 +31,8 @@ import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
@ -43,6 +46,8 @@ public class BinaryDictionaryFileDumper {
*/
static final int FILE_READ_BUFFER_SIZE = 1024;
private static final String DICTIONARY_PROJECTION[] = { "id" };
// Prevents this class to be accidentally instantiated.
private BinaryDictionaryFileDumper() {
}
@ -75,12 +80,47 @@ public class BinaryDictionaryFileDumper {
/**
* Return for a given locale the provider URI to query to get the dictionary.
*/
// TODO: remove this
public static Uri getProviderUri(Locale locale) {
return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT)
.authority(BinaryDictionary.DICTIONARY_PACK_AUTHORITY).appendPath(
locale.toString()).build();
}
/**
* Return for a given locale or dictionary id the provider URI to get the dictionary.
*/
private static Uri getProviderUri(String path) {
return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT)
.authority(BinaryDictionary.DICTIONARY_PACK_AUTHORITY).appendPath(
path).build();
}
/**
* Queries a content provider for the list of dictionaries for a specific locale
* available to copy into Latin IME.
*/
private static List<String> getDictIdList(final Locale locale, final Context context) {
final ContentResolver resolver = context.getContentResolver();
final Uri dictionaryPackUri = getProviderUri(locale);
final Cursor c = resolver.query(dictionaryPackUri, DICTIONARY_PROJECTION, null, null, null);
if (null == c) return Collections.<String>emptyList();
if (c.getCount() <= 0 || !c.moveToFirst()) {
c.close();
return Collections.<String>emptyList();
}
final List<String> list = new ArrayList<String>();
do {
final String id = c.getString(0);
if (TextUtils.isEmpty(id)) continue;
list.add(id);
} while (c.moveToNext());
c.close();
return list;
}
/**
* Queries a content provider for dictionary data for some locale and returns the file addresses
*
@ -95,20 +135,26 @@ public class BinaryDictionaryFileDumper {
* @throw FileNotFoundException if the provider returns non-existent data.
* @throw IOException if the provider-returned data could not be read.
*/
public static List<AssetFileAddress> getDictSetFromContentProvider(Locale locale,
Context context) throws FileNotFoundException, IOException {
public static List<AssetFileAddress> getDictSetFromContentProvider(final Locale locale,
final Context context) throws FileNotFoundException, IOException {
// TODO: check whether the dictionary is the same or not and if it is, return the cached
// file.
// TODO: This should be able to read a number of files from the dictionary pack, copy
// them all and return them.
final ContentResolver resolver = context.getContentResolver();
final Uri dictionaryPackUri = getProviderUri(locale);
final AssetFileDescriptor afd = resolver.openAssetFileDescriptor(dictionaryPackUri, "r");
if (null == afd) return null;
final List<String> idList = getDictIdList(locale, context);
final List<AssetFileAddress> fileAddressList = new ArrayList<AssetFileAddress>();
for (String id : idList) {
final Uri dictionaryPackUri = getProviderUri(id);
final AssetFileDescriptor afd =
resolver.openAssetFileDescriptor(dictionaryPackUri, "r");
if (null == afd) continue;
final String fileName =
copyFileTo(afd.createInputStream(), getCacheFileNameForLocale(locale, context));
afd.close();
return Arrays.asList(AssetFileAddress.makeFromFileName(fileName));
fileAddressList.add(AssetFileAddress.makeFromFileName(fileName));
}
return fileAddressList;
}
/**

11
java/src/com/android/inputmethod/latin/BinaryDictionaryGetter.java
View file

@ -63,9 +63,6 @@ class BinaryDictionaryGetter {
* Returns a list of file addresses for a given locale, trying relevant methods in order.
*
* Tries to get binary dictionaries from various sources, in order:
* - Uses a private method of getting a private dictionaries, as implemented by the
* PrivateBinaryDictionaryGetter class.
* If that fails:
* - Uses a content provider to get a public dictionary set, as per the protocol described
* in BinaryDictionaryFileDumper.
* If that fails:
@ -76,14 +73,7 @@ class BinaryDictionaryGetter {
*/
public static List<AssetFileAddress> getDictionaryFiles(Locale locale, Context context,
int fallbackResId) {
// Try first to query a private package signed the same way for private files.
final List<AssetFileAddress> privateFiles =
PrivateBinaryDictionaryGetter.getDictionaryFiles(locale, context);
if (null != privateFiles) {
return privateFiles;
} else {
try {
// If that was no-go, try to find a publicly exported dictionary.
List<AssetFileAddress> listFromContentProvider =
BinaryDictionaryFileDumper.getDictSetFromContentProvider(locale, context);
if (null != listFromContentProvider) {
@ -103,4 +93,3 @@ class BinaryDictionaryGetter {
return Arrays.asList(fallbackAsset);
}
}
}