Rename to Kelar Keyboard (org.kelar.inputmethod.latin)

1 files changed, 0 insertions, 613 deletions

diff --git a/java/src/com/android/inputmethod/latin/utils/DictionaryInfoUtils.java b/java/src/com/android/inputmethod/latin/utils/DictionaryInfoUtils.java
deleted file mode 100644
index cea2e13b1..000000000
--- a/java/src/com/android/inputmethod/latin/utils/DictionaryInfoUtils.java
+++ /dev/null
@@ -1,613 +0,0 @@
-/*
- * 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.utils;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.res.AssetManager;
-import android.content.res.Resources;
-import android.text.TextUtils;
-import android.util.Log;
-import android.view.inputmethod.InputMethodSubtype;
-
-import com.android.inputmethod.annotations.UsedForTesting;
-import com.android.inputmethod.dictionarypack.UpdateHandler;
-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;
-import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
-import com.android.inputmethod.latin.settings.SpacingAndPunctuations;
-
-import java.io.File;
-import java.io.FilenameFilter;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Locale;
-import java.util.concurrent.TimeUnit;
-
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-
-/**
- * This class encapsulates the logic for the Latin-IME side of dictionary information management.
- */
-public class DictionaryInfoUtils {
-    private static final String TAG = DictionaryInfoUtils.class.getSimpleName();
-    public static final String RESOURCE_PACKAGE_NAME = R.class.getPackage().getName();
-    private static final String DEFAULT_MAIN_DICT = "main";
-    private static final String MAIN_DICT_PREFIX = "main_";
-    private static final String DECODER_DICT_SUFFIX = DecoderSpecificConstants.DECODER_DICT_SUFFIX;
-    // 6 digits - unicode is limited to 21 bits
-    private static final int MAX_HEX_DIGITS_FOR_CODEPOINT = 6;
-
-    private static final String TEMP_DICT_FILE_SUB = UpdateHandler.TEMP_DICT_FILE_SUB;
-
-    public static class DictionaryInfo {
-        private static final String LOCALE_COLUMN = "locale";
-        private static final String WORDLISTID_COLUMN = "id";
-        private static final String LOCAL_FILENAME_COLUMN = "filename";
-        private static final String DESCRIPTION_COLUMN = "description";
-        private static final String DATE_COLUMN = "date";
-        private static final String FILESIZE_COLUMN = "filesize";
-        private static final String VERSION_COLUMN = "version";
-
-        @Nonnull public final String mId;
-        @Nonnull public final Locale mLocale;
-        @Nullable public final String mDescription;
-        @Nullable public final String mFilename;
-        public final long mFilesize;
-        public final long mModifiedTimeMillis;
-        public final int mVersion;
-
-        public DictionaryInfo(@Nonnull String id, @Nonnull Locale locale,
-                @Nullable String description, @Nullable String filename,
-                long filesize, long modifiedTimeMillis, int version) {
-            mId = id;
-            mLocale = locale;
-            mDescription = description;
-            mFilename = filename;
-            mFilesize = filesize;
-            mModifiedTimeMillis = modifiedTimeMillis;
-            mVersion = version;
-        }
-
-        public ContentValues toContentValues() {
-            final ContentValues values = new ContentValues();
-            values.put(WORDLISTID_COLUMN, mId);
-            values.put(LOCALE_COLUMN, mLocale.toString());
-            values.put(DESCRIPTION_COLUMN, mDescription);
-            values.put(LOCAL_FILENAME_COLUMN, mFilename != null ? mFilename : "");
-            values.put(DATE_COLUMN, TimeUnit.MILLISECONDS.toSeconds(mModifiedTimeMillis));
-            values.put(FILESIZE_COLUMN, mFilesize);
-            values.put(VERSION_COLUMN, mVersion);
-            return values;
-        }
-
-        @Override
-        public String toString() {
-            return "DictionaryInfo : Id = '" + mId
-                    + "' : Locale=" + mLocale
-                    + " : Version=" + mVersion;
-        }
-    }
-
-    private DictionaryInfoUtils() {
-        // Private constructor to forbid instantation of this helper class.
-    }
-
-    /**
-     * Returns whether we may want to use this character as part of a file name.
-     *
-     * This basically only accepts ascii letters and numbers, and rejects everything else.
-     */
-    private static boolean isFileNameCharacter(int codePoint) {
-        if (codePoint >= 0x30 && codePoint <= 0x39) return true; // Digit
-        if (codePoint >= 0x41 && codePoint <= 0x5A) return true; // Uppercase
-        if (codePoint >= 0x61 && codePoint <= 0x7A) return true; // Lowercase
-        return codePoint == '_'; // Underscore
-    }
-
-    /**
-     * Escapes a string for any characters that may be suspicious for a file or directory name.
-     *
-     * Concretely this does a sort of URL-encoding except it will encode everything that's not
-     * alphanumeric or underscore. (true URL-encoding leaves alone characters like '*', which
-     * we cannot allow here)
-     */
-    // TODO: create a unit test for this method
-    public static String replaceFileNameDangerousCharacters(final String name) {
-        // This assumes '%' is fully available as a non-separator, normal
-        // character in a file name. This is probably true for all file systems.
-        final StringBuilder sb = new StringBuilder();
-        final int nameLength = name.length();
-        for (int i = 0; i < nameLength; i = name.offsetByCodePoints(i, 1)) {
-            final int codePoint = name.codePointAt(i);
-            if (DictionaryInfoUtils.isFileNameCharacter(codePoint)) {
-                sb.appendCodePoint(codePoint);
-            } else {
-                sb.append(String.format((Locale)null, "%%%1$0" + MAX_HEX_DIGITS_FOR_CODEPOINT + "x",
-                        codePoint));
-            }
-        }
-        return sb.toString();
-    }
-
-    /**
-     * Helper method to get the top level cache directory.
-     */
-    private static String getWordListCacheDirectory(final Context context) {
-        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.
-     */
-    public static String getWordListTempDirectory(final Context context) {
-        return context.getFilesDir() + File.separator + "tmp";
-    }
-
-    /**
-     * Reverse escaping done by {@link #replaceFileNameDangerousCharacters(String)}.
-     */
-    @Nonnull
-    public static String getWordListIdFromFileName(@Nonnull final String fname) {
-        final StringBuilder sb = new StringBuilder();
-        final int fnameLength = fname.length();
-        for (int i = 0; i < fnameLength; i = fname.offsetByCodePoints(i, 1)) {
-            final int codePoint = fname.codePointAt(i);
-            if ('%' != codePoint) {
-                sb.appendCodePoint(codePoint);
-            } else {
-                // + 1 to pass the % sign
-                final int encodedCodePoint = Integer.parseInt(
-                        fname.substring(i + 1, i + 1 + MAX_HEX_DIGITS_FOR_CODEPOINT), 16);
-                i += MAX_HEX_DIGITS_FOR_CODEPOINT;
-                sb.appendCodePoint(encodedCodePoint);
-            }
-        }
-        return sb.toString();
-    }
-
-    /**
-     * Helper method to the list of cache directories, one for each distinct locale.
-     */
-    public static File[] getCachedDirectoryList(final Context context) {
-        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() {
-            @Override
-            public boolean accept(File dir, String filename) {
-                return !TextUtils.isEmpty(filename) && filename.endsWith(".dict")
-                        && filename.contains(TEMP_DICT_FILE_SUB);
-            }
-        });
-    }
-
-    /**
-     * Returns the category for a given file name.
-     *
-     * This parses the file name, extracts the category, and returns it. See
-     * {@link #getMainDictId(Locale)} and {@link #isMainWordListId(String)}.
-     * @return The category as a string or null if it can't be found in the file name.
-     */
-    @Nullable
-    public static String getCategoryFromFileName(@Nonnull final String fileName) {
-        final String id = getWordListIdFromFileName(fileName);
-        final String[] idArray = id.split(BinaryDictionaryGetter.ID_CATEGORY_SEPARATOR);
-        // An id is supposed to be in format category:locale, so splitting on the separator
-        // should yield a 2-elements array
-        if (2 != idArray.length) {
-            return null;
-        }
-        return idArray[0];
-    }
-
-    /**
-     * Find out the cache directory associated with a specific locale.
-     */
-    public static String getCacheDirectoryForLocale(final String locale, final Context context) {
-        final String relativeDirectoryName = replaceFileNameDangerousCharacters(locale);
-        final String absoluteDirectoryName = getWordListCacheDirectory(context) + File.separator
-                + relativeDirectoryName;
-        final File directory = new File(absoluteDirectoryName);
-        if (!directory.exists()) {
-            if (!directory.mkdirs()) {
-                Log.e(TAG, "Could not create the directory for locale" + locale);
-            }
-        }
-        return absoluteDirectoryName;
-    }
-
-    /**
-     * Generates a file name for the id and locale passed as an argument.
-     *
-     * In the current implementation the file name returned will always be unique for
-     * any id/locale pair, but please do not expect that the id can be the same for
-     * different dictionaries with different locales. An id should be unique for any
-     * dictionary.
-     * The file name is pretty much an URL-encoded version of the id inside a directory
-     * named like the locale, except it will also escape characters that look dangerous
-     * to some file systems.
-     * @param id the id of the dictionary for which to get a file name
-     * @param locale the locale for which to get the file name as a string
-     * @param context the context to use for getting the directory
-     * @return the name of the file to be created
-     */
-    public static String getCacheFileName(String id, String locale, Context context) {
-        final String fileName = replaceFileNameDangerousCharacters(id);
-        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.
-                if (!FileUtils.renameTo(stagingFile, cacheFile)) {
-                    Log.e(TAG, String.format("Failed to rename from %s to %s.",
-                            stagingFile.getAbsoluteFile(), cacheFile.getAbsoluteFile()));
-                }
-            }
-        }
-    }
-
-    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
-        // should yield a 2-elements array
-        if (2 != idArray.length) {
-            return false;
-        }
-        return BinaryDictionaryGetter.MAIN_DICTIONARY_CATEGORY.equals(idArray[0]);
-    }
-
-    /**
-     * Find out whether a dictionary is available for this locale.
-     * @param context the context on which to check resources.
-     * @param locale the locale to check for.
-     * @return whether a (non-placeholder) dictionary is available or not.
-     */
-    public static boolean isDictionaryAvailable(final Context context, final Locale locale) {
-        final Resources res = context.getResources();
-        return 0 != getMainDictionaryResourceIdIfAvailableForLocale(res, locale);
-    }
-
-    /**
-     * Helper method to return a dictionary res id for a locale, or 0 if none.
-     * @param res resources for the app
-     * @param locale dictionary locale
-     * @return main dictionary resource id
-     */
-    public static int getMainDictionaryResourceIdIfAvailableForLocale(final Resources res,
-            final Locale locale) {
-        int resId;
-        // Try to find main_language_country dictionary.
-        if (!locale.getCountry().isEmpty()) {
-            final String dictLanguageCountry = MAIN_DICT_PREFIX
-                    + locale.toString().toLowerCase(Locale.ROOT) + DECODER_DICT_SUFFIX;
-            if ((resId = res.getIdentifier(
-                    dictLanguageCountry, "raw", RESOURCE_PACKAGE_NAME)) != 0) {
-                return resId;
-            }
-        }
-
-        // Try to find main_language dictionary.
-        final String dictLanguage = MAIN_DICT_PREFIX + locale.getLanguage() + DECODER_DICT_SUFFIX;
-        if ((resId = res.getIdentifier(dictLanguage, "raw", RESOURCE_PACKAGE_NAME)) != 0) {
-            return resId;
-        }
-
-        // Not found, return 0
-        return 0;
-    }
-
-    /**
-     * Returns a main dictionary resource id
-     * @param res resources for the app
-     * @param locale dictionary locale
-     * @return main dictionary resource id
-     */
-    public static int getMainDictionaryResourceId(final Resources res, final Locale locale) {
-        int resourceId = getMainDictionaryResourceIdIfAvailableForLocale(res, locale);
-        if (0 != resourceId) {
-            return resourceId;
-        }
-        return res.getIdentifier(DEFAULT_MAIN_DICT + DecoderSpecificConstants.DECODER_DICT_SUFFIX,
-                "raw", RESOURCE_PACKAGE_NAME);
-    }
-
-    /**
-     * Returns the id associated with the main word list for a specified locale.
-     *
-     * Word lists stored in Android Keyboard's resources are referred to as the "main"
-     * word lists. Since they can be updated like any other list, we need to assign a
-     * unique ID to them. This ID is just the name of the language (locale-wise) they
-     * are for, and this method returns this ID.
-     */
-    public static String getMainDictId(@Nonnull final Locale locale) {
-        // This works because we don't include by default different dictionaries for
-        // different countries. This actually needs to return the id that we would
-        // like to use for word lists included in resources, and the following is okay.
-        return BinaryDictionaryGetter.MAIN_DICTIONARY_CATEGORY +
-                BinaryDictionaryGetter.ID_CATEGORY_SEPARATOR + locale.toString().toLowerCase();
-    }
-
-    public static DictionaryHeader getDictionaryFileHeaderOrNull(final File file,
-            final long offset, final long length) {
-        try {
-            final DictionaryHeader header =
-                    BinaryDictionaryUtils.getHeaderWithOffsetAndLength(file, offset, length);
-            return header;
-        } catch (UnsupportedFormatException e) {
-            return null;
-        } catch (IOException e) {
-            return null;
-        }
-    }
-
-    /**
-     * Returns information of the dictionary.
-     *
-     * @param fileAddress the asset dictionary file address.
-     * @param locale Locale for this file.
-     * @return information of the specified dictionary.
-     */
-    private static DictionaryInfo createDictionaryInfoFromFileAddress(
-            @Nonnull final AssetFileAddress fileAddress, final Locale locale) {
-        final String id = getMainDictId(locale);
-        final int version = DictionaryHeaderUtils.getContentVersion(fileAddress);
-        final String description = SubtypeLocaleUtils
-                .getSubtypeLocaleDisplayName(locale.toString());
-        // Do not store the filename on db as it will try to move the filename from db to the
-        // cached directory. If the filename is already in cached directory, this is not
-        // necessary.
-        final String filenameToStoreOnDb = null;
-        return new DictionaryInfo(id, locale, description, filenameToStoreOnDb,
-                fileAddress.mLength, new File(fileAddress.mFilename).lastModified(), version);
-    }
-
-    /**
-     * Returns the information of the dictionary for the given {@link AssetFileAddress}.
-     * If the file is corrupted or a pre-fava file, then the file gets deleted and the null
-     * value is returned.
-     */
-    @Nullable
-    private static DictionaryInfo createDictionaryInfoForUnCachedFile(
-            @Nonnull final AssetFileAddress fileAddress, final Locale locale) {
-        final String id = getMainDictId(locale);
-        final int version = DictionaryHeaderUtils.getContentVersion(fileAddress);
-
-        if (version == -1) {
-            // Purge the pre-fava/corrupted unused dictionaires.
-            fileAddress.deleteUnderlyingFile();
-            return null;
-        }
-
-        final String description = SubtypeLocaleUtils
-                .getSubtypeLocaleDisplayName(locale.toString());
-
-        final File unCachedFile = new File(fileAddress.mFilename);
-        // Store just the filename and not the full path.
-        final String filenameToStoreOnDb = unCachedFile.getName();
-        return new DictionaryInfo(id, locale, description, filenameToStoreOnDb, fileAddress.mLength,
-                unCachedFile.lastModified(), version);
-    }
-
-    /**
-     * Returns dictionary information for the given locale.
-     */
-    private static DictionaryInfo createDictionaryInfoFromLocale(Locale locale) {
-        final String id = getMainDictId(locale);
-        final int version = -1;
-        final String description = SubtypeLocaleUtils
-                .getSubtypeLocaleDisplayName(locale.toString());
-        return new DictionaryInfo(id, locale, description, null, 0L, 0L, version);
-    }
-
-    private static void addOrUpdateDictInfo(final ArrayList<DictionaryInfo> dictList,
-            final DictionaryInfo newElement) {
-        final Iterator<DictionaryInfo> iter = dictList.iterator();
-        while (iter.hasNext()) {
-            final DictionaryInfo thisDictInfo = iter.next();
-            if (thisDictInfo.mLocale.equals(newElement.mLocale)) {
-                if (newElement.mVersion <= thisDictInfo.mVersion) {
-                    return;
-                }
-                iter.remove();
-            }
-        }
-        dictList.add(newElement);
-    }
-
-    public static ArrayList<DictionaryInfo> getCurrentDictionaryFileNameAndVersionInfo(
-            final Context context) {
-        final ArrayList<DictionaryInfo> dictList = new ArrayList<>();
-
-        // Retrieve downloaded dictionaries from cached directories
-        final File[] directoryList = getCachedDirectoryList(context);
-        if (null != directoryList) {
-            for (final File directory : directoryList) {
-                final String localeString = getWordListIdFromFileName(directory.getName());
-                final File[] dicts = BinaryDictionaryGetter.getCachedWordLists(
-                        localeString, context);
-                for (final File dict : dicts) {
-                    final String wordListId = getWordListIdFromFileName(dict.getName());
-                    if (!DictionaryInfoUtils.isMainWordListId(wordListId)) {
-                        continue;
-                    }
-                    final Locale locale = LocaleUtils.constructLocaleFromString(localeString);
-                    final AssetFileAddress fileAddress = AssetFileAddress.makeFromFile(dict);
-                    final DictionaryInfo dictionaryInfo =
-                            createDictionaryInfoFromFileAddress(fileAddress, locale);
-                    // Protect against cases of a less-specific dictionary being found, like an
-                    // en dictionary being used for an en_US locale. In this case, the en dictionary
-                    // should be used for en_US but discounted for listing purposes.
-                    if (dictionaryInfo == null || !dictionaryInfo.mLocale.equals(locale)) {
-                        continue;
-                    }
-                    addOrUpdateDictInfo(dictList, dictionaryInfo);
-                }
-            }
-        }
-
-        // Retrieve downloaded dictionaries from the unused dictionaries.
-        File[] unusedDictionaryList = getUnusedDictionaryList(context);
-        if (unusedDictionaryList != null) {
-            for (File dictionaryFile : unusedDictionaryList) {
-                String fileName = dictionaryFile.getName();
-                int index = fileName.indexOf(TEMP_DICT_FILE_SUB);
-                if (index == -1) {
-                    continue;
-                }
-                String locale = fileName.substring(0, index);
-                DictionaryInfo dictionaryInfo = createDictionaryInfoForUnCachedFile(
-                        AssetFileAddress.makeFromFile(dictionaryFile),
-                        LocaleUtils.constructLocaleFromString(locale));
-                if (dictionaryInfo != null) {
-                    addOrUpdateDictInfo(dictList, dictionaryInfo);
-                }
-            }
-        }
-
-        // Retrieve files from assets
-        final Resources resources = context.getResources();
-        final AssetManager assets = resources.getAssets();
-        for (final String localeString : assets.getLocales()) {
-            final Locale locale = LocaleUtils.constructLocaleFromString(localeString);
-            final int resourceId =
-                    DictionaryInfoUtils.getMainDictionaryResourceIdIfAvailableForLocale(
-                            context.getResources(), locale);
-            if (0 == resourceId) {
-                continue;
-            }
-            final AssetFileAddress fileAddress =
-                    BinaryDictionaryGetter.loadFallbackResource(context, resourceId);
-            final DictionaryInfo dictionaryInfo = createDictionaryInfoFromFileAddress(fileAddress,
-                    locale);
-            // Protect against cases of a less-specific dictionary being found, like an
-            // en dictionary being used for an en_US locale. In this case, the en dictionary
-            // should be used for en_US but discounted for listing purposes.
-            // TODO: Remove dictionaryInfo == null when the static LMs have the headers.
-            if (dictionaryInfo == null || !dictionaryInfo.mLocale.equals(locale)) {
-                continue;
-            }
-            addOrUpdateDictInfo(dictList, dictionaryInfo);
-        }
-
-        // Generate the dictionary information from  the enabled subtypes. This will not
-        // overwrite the real records.
-        RichInputMethodManager.init(context);
-        List<InputMethodSubtype> enabledSubtypes = RichInputMethodManager
-                .getInstance().getMyEnabledInputMethodSubtypeList(true);
-        for (InputMethodSubtype subtype : enabledSubtypes) {
-            Locale locale = LocaleUtils.constructLocaleFromString(subtype.getLocale());
-            DictionaryInfo dictionaryInfo = createDictionaryInfoFromLocale(locale);
-            addOrUpdateDictInfo(dictList, dictionaryInfo);
-        }
-
-        return dictList;
-    }
-
-    @UsedForTesting
-    public static boolean looksValidForDictionaryInsertion(final CharSequence text,
-            final SpacingAndPunctuations spacingAndPunctuations) {
-        if (TextUtils.isEmpty(text)) {
-            return false;
-        }
-        final int length = text.length();
-        if (length > DecoderSpecificConstants.DICTIONARY_MAX_WORD_LENGTH) {
-            return false;
-        }
-        int i = 0;
-        int digitCount = 0;
-        while (i < length) {
-            final int codePoint = Character.codePointAt(text, i);
-            final int charCount = Character.charCount(codePoint);
-            i += charCount;
-            if (Character.isDigit(codePoint)) {
-                // Count digits: see below
-                digitCount += charCount;
-                continue;
-            }
-            if (!spacingAndPunctuations.isWordCodePoint(codePoint)) {
-                return false;
-            }
-        }
-        // We reject strings entirely comprised of digits to avoid using PIN codes or credit
-        // card numbers. It would come in handy for word prediction though; a good example is
-        // when writing one's address where the street number is usually quite discriminative,
-        // as well as the postal code.
-        return digitCount < length;
-    }
-}