Move basic string operations to ui/app_list/search

chrome/browser/ui/app_list/search/term_break_iterator.cc

Index: chrome/browser/ui/app_list/search/term_break_iterator.cc
diff --git a/chrome/browser/ui/app_list/search/term_break_iterator.cc b/chrome/browser/ui/app_list/search/term_break_iterator.cc
deleted file mode 100644
index 5ace7dcc7733cdad549e3aa1899ed34ad9111293..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/app_list/search/term_break_iterator.cc
+++ /dev/null
@@ -1,76 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/ui/app_list/search/term_break_iterator.h"
-
-#include "base/i18n/char_iterator.h"
-#include "base/logging.h"
-#include "base/strings/string_util.h"
-#include "third_party/icu/source/common/unicode/uchar.h"
-
-namespace app_list {
-
-TermBreakIterator::TermBreakIterator(const base::string16& word)
-    : word_(word),
-      prev_(npos),
-      pos_(0),
-      iter_(new base::i18n::UTF16CharIterator(&word)),
-      state_(STATE_START) {
-}
-
-TermBreakIterator::~TermBreakIterator() {}
-
-bool TermBreakIterator::Advance() {
-  // 2D matrix that defines term boundaries. Each row represents current state.
-  // Each col represents new state from input char. Cells with true value
-  // represents a term boundary.
-  const bool kBoundary[][STATE_LAST] = {
-    // START  NUMBER UPPER  LOWER  CHAR
-    {  false, false, false, false, false },  // START
-    {  false, false, true,  true,  true },   // NUMBER
-    {  false, true,  false, false, true },   // UPPER
-    {  false, true,  true,  false, true },   // LOWER
-    {  false, true,  true,  true,  false },  // CHAR
-  };
-
-  while (iter_->Advance()) {
-    const State new_state = GetNewState(word_[iter_->array_pos()]);
-    const bool is_boundary = kBoundary[state_][new_state];
-    state_ = new_state;
-    if (is_boundary)
-      break;
-  }
-
-  prev_ = pos_;
-  pos_ = iter_->array_pos();
-
-  return prev_ != pos_ || !iter_->end();
-}
-
-const base::string16 TermBreakIterator::GetCurrentTerm() const {
-  DCHECK(prev_ != npos && pos_ != npos);
-  return word_.substr(prev_, pos_ - prev_);
-}
-
-TermBreakIterator::State TermBreakIterator::GetNewState(base::char16 ch) {
-  if (IsAsciiDigit(ch) || ch == '.' || ch == ',')
-    return STATE_NUMBER;
-
-  const bool is_upper = !!u_isUUppercase(ch);
-  const bool is_lower = !!u_isULowercase(ch);
-
-  if (is_upper && is_lower) {
-    NOTREACHED() << "Invalid state for ch=" << ch;
-    return STATE_CHAR;
-  }
-
-  if (is_upper)
-    return STATE_UPPER;
-  if (is_lower)
-    return STATE_LOWER;
-
-  return STATE_CHAR;
-}
-
-}  // namespace app_list