ui/app_list/search/tokenized_string.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/app_list/search/tokenized_string.h"
   6
   7 #include "base/i18n/break_iterator.h"
   8 #include "base/i18n/case_conversion.h"
   9 #include "base/logging.h"
  10 #include "ui/app_list/search/term_break_iterator.h"
  11
  12 using base::i18n::BreakIterator;
  13
  14 namespace app_list {
  15
  16 TokenizedString::TokenizedString(const base::string16& text)
  17     : text_(text) {
  18   Tokenize();
  19 }
  20
  21 TokenizedString::~TokenizedString() {}
  22
  23 void TokenizedString::Tokenize() {
  24   BreakIterator break_iter(text_,  BreakIterator::BREAK_WORD);
  25   if (!break_iter.Init()) {
  26     NOTREACHED() << "BreakIterator init failed"
  27                  << ", text=\"" << text_ << "\"";
  28     return;
  29   }
  30
  31   while (break_iter.Advance()) {
  32     if (!break_iter.IsWord())
  33       continue;
  34
  35     const base::string16 word(break_iter.GetString());
  36     const size_t word_start = break_iter.prev();
  37     TermBreakIterator term_iter(word);
  38     while (term_iter.Advance()) {
  39       tokens_.push_back(base::i18n::ToLower(term_iter.GetCurrentTerm()));
  40       mappings_.push_back(gfx::Range(word_start + term_iter.prev(),
  41                                     word_start + term_iter.pos()));
  42     }
  43   }
  44 }
  45
  46 }  // namespace app_list