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/*
* Qt implementation of TCIME library
* This file is part of the Qt Virtual Keyboard module.
* Contact: http://www.qt.io/licensing/
*
* Copyright (C) 2015 The Qt Company
* Copyright 2010 Google Inc.
*
* 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.
*/
#include "phrasedictionary.h"
using namespace tcime;
PhraseDictionary::PhraseDictionary() :
WordDictionary()
{
}
QStringList PhraseDictionary::getWords(const QString &input) const
{
if (input.length() != 1)
return QStringList();
// Phrases are stored in an array consisting of three character arrays.
// char[0][] contains a char[] of words to look for phrases.
// char[2][] contains a char[] of following words for char[0][].
// char[1][] contains offsets of char[0][] words to map its following words.
// For example, there are 5 phrases: Aa, Aa', Bb, Bb', Cc.
// char[0][] { A, B, C }
// char[1][] { 0, 2, 4 }
// char[2][] { a, a', b, b', c}
const Dictionary &dict = dictionary();
if (dict.length() != 3)
return QStringList();
const DictionaryEntry &words = dict[0];
DictionaryEntry::ConstIterator word = qBinaryFind(words, input.at(0));
if (word == words.constEnd())
return QStringList();
int index = word - words.constBegin();
const DictionaryEntry &offsets = dict[1];
const DictionaryEntry &phrases = dict[2];
int offset = (int)offsets[index].unicode();
int count = (index < offsets.length() - 1) ?
((int)offsets[index + 1].unicode() - offset) : (phrases.length() - offset);
QStringList result;
for (int i = 0; i < count; ++i)
result.append(phrases[offset + i]);
return result;
}
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