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      1 /*
      2  * Copyright (C) 2013, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 /*
     18  * !!!!! DO NOT EDIT THIS FILE !!!!!
     19  *
     20  * This file was generated from
     21  *   suggest/policyimpl/dictionary/structure/v4/content/shortcut_dict_content.cpp
     22  */
     23 
     24 #include "suggest/policyimpl/dictionary/structure/backward/v402/content/shortcut_dict_content.h"
     25 
     26 #include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
     27 
     28 namespace latinime {
     29 namespace backward {
     30 namespace v402 {
     31 
     32 void ShortcutDictContent::getShortcutEntryAndAdvancePosition(const int maxCodePointCount,
     33         int *const outCodePoint, int *const outCodePointCount, int *const outProbability,
     34         bool *const outhasNext, int *const shortcutEntryPos) const {
     35     const BufferWithExtendableBuffer *const shortcutListBuffer = getContentBuffer();
     36     if (*shortcutEntryPos < 0 || *shortcutEntryPos >=  shortcutListBuffer->getTailPosition()) {
     37         AKLOGE("Invalid shortcut entry position. shortcutEntryPos: %d, bufSize: %d",
     38                 *shortcutEntryPos, shortcutListBuffer->getTailPosition());
     39         ASSERT(false);
     40         if (outhasNext) {
     41             *outhasNext = false;
     42         }
     43         if (outCodePointCount) {
     44             *outCodePointCount = 0;
     45         }
     46         return;
     47     }
     48 
     49     const int shortcutFlags = shortcutListBuffer->readUintAndAdvancePosition(
     50             Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
     51     if (outProbability) {
     52         *outProbability = shortcutFlags & Ver4DictConstants::SHORTCUT_PROBABILITY_MASK;
     53     }
     54     if (outhasNext) {
     55         *outhasNext = shortcutFlags & Ver4DictConstants::SHORTCUT_HAS_NEXT_MASK;
     56     }
     57     if (outCodePoint && outCodePointCount) {
     58         shortcutListBuffer->readCodePointsAndAdvancePosition(
     59                 maxCodePointCount, outCodePoint, outCodePointCount, shortcutEntryPos);
     60     }
     61 }
     62 
     63 int ShortcutDictContent::getShortcutListHeadPos(const int terminalId) const {
     64     const SparseTable *const addressLookupTable = getAddressLookupTable();
     65     if (!addressLookupTable->contains(terminalId)) {
     66         return NOT_A_DICT_POS;
     67     }
     68     return addressLookupTable->get(terminalId);
     69 }
     70 
     71 bool ShortcutDictContent::flushToFile(const char *const dictPath) const {
     72     return flush(dictPath, Ver4DictConstants::SHORTCUT_LOOKUP_TABLE_FILE_EXTENSION,
     73             Ver4DictConstants::SHORTCUT_CONTENT_TABLE_FILE_EXTENSION,
     74             Ver4DictConstants::SHORTCUT_FILE_EXTENSION);
     75 }
     76 
     77 bool ShortcutDictContent::runGC(
     78         const TerminalPositionLookupTable::TerminalIdMap *const terminalIdMap,
     79         const ShortcutDictContent *const originalShortcutDictContent) {
     80    for (TerminalPositionLookupTable::TerminalIdMap::const_iterator it = terminalIdMap->begin();
     81            it != terminalIdMap->end(); ++it) {
     82        const int originalShortcutListPos =
     83                originalShortcutDictContent->getShortcutListHeadPos(it->first);
     84        if (originalShortcutListPos == NOT_A_DICT_POS) {
     85            continue;
     86        }
     87        const int shortcutListPos = getContentBuffer()->getTailPosition();
     88        // Copy shortcut list from original content.
     89        if (!copyShortcutListFromDictContent(originalShortcutListPos, originalShortcutDictContent,
     90                shortcutListPos)) {
     91            AKLOGE("Cannot copy shortcut list during GC. original pos: %d, pos: %d",
     92                    originalShortcutListPos, shortcutListPos);
     93            return false;
     94        }
     95        // Set shortcut list position to the lookup table.
     96        if (!getUpdatableAddressLookupTable()->set(it->second, shortcutListPos)) {
     97            AKLOGE("Cannot set shortcut list position. terminal id: %d, pos: %d",
     98                    it->second, shortcutListPos);
     99            return false;
    100        }
    101    }
    102    return true;
    103 }
    104 
    105 bool ShortcutDictContent::createNewShortcutList(const int terminalId) {
    106     const int shortcutListListPos = getContentBuffer()->getTailPosition();
    107     return getUpdatableAddressLookupTable()->set(terminalId, shortcutListListPos);
    108 }
    109 
    110 bool ShortcutDictContent::copyShortcutList(const int shortcutListPos, const int toPos) {
    111     return copyShortcutListFromDictContent(shortcutListPos, this, toPos);
    112 }
    113 
    114 bool ShortcutDictContent::copyShortcutListFromDictContent(const int shortcutListPos,
    115         const ShortcutDictContent *const sourceShortcutDictContent, const int toPos) {
    116     bool hasNext = true;
    117     int readingPos = shortcutListPos;
    118     int writingPos = toPos;
    119     int codePoints[MAX_WORD_LENGTH];
    120     while (hasNext) {
    121         int probability = 0;
    122         int codePointCount = 0;
    123         sourceShortcutDictContent->getShortcutEntryAndAdvancePosition(MAX_WORD_LENGTH,
    124                 codePoints, &codePointCount, &probability, &hasNext, &readingPos);
    125         if (!writeShortcutEntryAndAdvancePosition(codePoints, codePointCount, probability,
    126                 hasNext, &writingPos)) {
    127             AKLOGE("Cannot write shortcut entry to copy. pos: %d", writingPos);
    128             return false;
    129         }
    130     }
    131     return true;
    132 }
    133 
    134 bool ShortcutDictContent::setProbability(const int probability, const int shortcutEntryPos) {
    135     BufferWithExtendableBuffer *const shortcutListBuffer = getWritableContentBuffer();
    136     const int shortcutFlags = shortcutListBuffer->readUint(
    137             Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
    138     const bool hasNext = shortcutFlags & Ver4DictConstants::SHORTCUT_HAS_NEXT_MASK;
    139     const int shortcutFlagsToWrite = createAndGetShortcutFlags(probability, hasNext);
    140     return shortcutListBuffer->writeUint(shortcutFlagsToWrite,
    141             Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
    142 }
    143 
    144 bool ShortcutDictContent::writeShortcutEntryAndAdvancePosition(const int *const codePoint,
    145         const int codePointCount, const int probability, const bool hasNext,
    146         int *const shortcutEntryPos) {
    147     BufferWithExtendableBuffer *const shortcutListBuffer = getWritableContentBuffer();
    148     const int shortcutFlags = createAndGetShortcutFlags(probability, hasNext);
    149     if (!shortcutListBuffer->writeUintAndAdvancePosition(shortcutFlags,
    150             Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos)) {
    151         AKLOGE("Cannot write shortcut flags. flags; %x, pos: %d", shortcutFlags, *shortcutEntryPos);
    152         return false;
    153     }
    154     if (!shortcutListBuffer->writeCodePointsAndAdvancePosition(codePoint, codePointCount,
    155             true /* writesTerminator */, shortcutEntryPos)) {
    156         AKLOGE("Cannot write shortcut target code points. pos: %d", *shortcutEntryPos);
    157         return false;
    158     }
    159     return true;
    160 }
    161 
    162 // Find a shortcut entry that has specified target and return its position.
    163 int ShortcutDictContent::findShortcutEntryAndGetPos(const int shortcutListPos,
    164         const int *const targetCodePointsToFind, const int codePointCount) const {
    165     bool hasNext = true;
    166     int readingPos = shortcutListPos;
    167     int targetCodePoints[MAX_WORD_LENGTH];
    168     while (hasNext) {
    169         const int entryPos = readingPos;
    170         int probability = 0;
    171         int targetCodePointCount = 0;
    172         getShortcutEntryAndAdvancePosition(MAX_WORD_LENGTH, targetCodePoints, &targetCodePointCount,
    173                 &probability, &hasNext, &readingPos);
    174         if (targetCodePointCount != codePointCount) {
    175             continue;
    176         }
    177         bool matched = true;
    178         for (int i = 0; i < codePointCount; ++i) {
    179             if (targetCodePointsToFind[i] != targetCodePoints[i]) {
    180                 matched = false;
    181                 break;
    182             }
    183         }
    184         if (matched) {
    185             return entryPos;
    186         }
    187     }
    188     return NOT_A_DICT_POS;
    189 }
    190 
    191 int ShortcutDictContent::createAndGetShortcutFlags(const int probability,
    192         const bool hasNext) const {
    193     return (probability & Ver4DictConstants::SHORTCUT_PROBABILITY_MASK)
    194             | (hasNext ? Ver4DictConstants::SHORTCUT_HAS_NEXT_MASK : 0);
    195 }
    196 
    197 } // namespace v402
    198 } // namespace backward
    199 } // namespace latinime
    200