More old files deletion.

ui/base/l10n/l10n_util_collator.h

-// Copyright (c) 2011 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.
-
-#ifndef UI_BASE_L10N_L10N_UTIL_COLLATOR_H_
-#define UI_BASE_L10N_L10N_UTIL_COLLATOR_H_
-
-#include <algorithm>
-#include <functional>
-#include <string>
-#include <vector>
-
-#include "base/i18n/string_compare.h"
-#include "base/memory/scoped_ptr.h"
-#include "third_party/icu/source/i18n/unicode/coll.h"
-#include "ui/base/ui_base_export.h"
-
-namespace l10n_util {
-
-// Used by SortStringsUsingMethod. Invokes a method on the objects passed to
-// operator (), comparing the string results using a collator.
-template <class T, class Method>
-class StringMethodComparatorWithCollator
-    : public std::binary_function<const base::string16&,
-                                  const base::string16&,
-                                  bool> {
- public:
-  StringMethodComparatorWithCollator(icu::Collator* collator, Method method)
-      : collator_(collator),
-        method_(method) { }
-
-  // Returns true if lhs preceeds rhs.
-  bool operator() (T* lhs_t, T* rhs_t) {
-    return base::i18n::CompareString16WithCollator(collator_,
-        (lhs_t->*method_)(), (rhs_t->*method_)()) == UCOL_LESS;
-  }
-
- private:
-  icu::Collator* collator_;
-  Method method_;
-};
-
-// Used by SortStringsUsingMethod. Invokes a method on the objects passed to
-// operator (), comparing the string results using <.
-template <class T, class Method>
-class StringMethodComparator
-    : public std::binary_function<const base::string16&,
-                                  const base::string16&,
-                                  bool> {
- public:
-  explicit StringMethodComparator(Method method) : method_(method) { }
-
-  // Returns true if lhs preceeds rhs.
-  bool operator() (T* lhs_t, T* rhs_t) {
-    return (lhs_t->*method_)() < (rhs_t->*method_)();
-  }
-
- private:
-  Method method_;
-};
-
-// Sorts the objects in |elements| using the method |method|, which must return
-// a string. Sorting is done using a collator, unless a collator can not be
-// found in which case the strings are sorted using the operator <.
-template <class T, class Method>
-void SortStringsUsingMethod(const std::string& locale,
-                            std::vector<T*>* elements,
-                            Method method) {
-  UErrorCode error = U_ZERO_ERROR;
-  icu::Locale loc(locale.c_str());
-  scoped_ptr<icu::Collator> collator(icu::Collator::createInstance(loc, error));
-  if (U_FAILURE(error)) {
-    sort(elements->begin(), elements->end(),
-         StringMethodComparator<T, Method>(method));
-    return;
-  }
-
-  std::sort(elements->begin(), elements->end(),
-      StringMethodComparatorWithCollator<T, Method>(collator.get(), method));
-}
-
-// Compares two elements' string keys and returns true if the first element's
-// string key is less than the second element's string key. The Element must
-// have a method like the follow format to return the string key.
-// const base::string16& GetStringKey() const;
-// This uses the locale specified in the constructor.
-template <class Element>
-class StringComparator : public std::binary_function<const Element&,
-                                                     const Element&,
-                                                     bool> {
- public:
-  explicit StringComparator(icu::Collator* collator)
-      : collator_(collator) { }
-
-  // Returns true if lhs precedes rhs.
-  bool operator()(const Element& lhs, const Element& rhs) {
-    const base::string16& lhs_string_key = lhs.GetStringKey();
-    const base::string16& rhs_string_key = rhs.GetStringKey();
-
-    return StringComparator<base::string16>(collator_)(lhs_string_key,
-                                                 rhs_string_key);
-  }
-
- private:
-  icu::Collator* collator_;
-};
-
-// Specialization of operator() method for base::string16 version.
-template <>
-UI_BASE_EXPORT inline bool StringComparator<base::string16>::operator()(
-    const base::string16& lhs,
-    const base::string16& rhs) {
-  // If we can not get collator instance for specified locale, just do simple
-  // string compare.
-  if (!collator_)
-    return lhs < rhs;
-  return base::i18n::CompareString16WithCollator(collator_, lhs, rhs) ==
-      UCOL_LESS;
-}
-
-// In place sorting of |elements| of a vector according to the string key of
-// each element in the vector by using collation rules for |locale|.
-// |begin_index| points to the start position of elements in the vector which
-// want to be sorted. |end_index| points to the end position of elements in the
-// vector which want to be sorted
-template <class Element>
-void SortVectorWithStringKey(const std::string& locale,
-                             std::vector<Element>* elements,
-                             unsigned int begin_index,
-                             unsigned int end_index,
-                             bool needs_stable_sort) {
-  DCHECK(begin_index < end_index &&
-         end_index <= static_cast<unsigned int>(elements->size()));
-  UErrorCode error = U_ZERO_ERROR;
-  icu::Locale loc(locale.c_str());
-  scoped_ptr<icu::Collator> collator(icu::Collator::createInstance(loc, error));
-  if (U_FAILURE(error))
-    collator.reset();
-  StringComparator<Element> c(collator.get());
-  if (needs_stable_sort) {
-    stable_sort(elements->begin() + begin_index,
-                elements->begin() + end_index,
-                c);
-  } else {
-    sort(elements->begin() + begin_index, elements->begin() + end_index, c);
-  }
-}
-
-template <class Element>
-void SortVectorWithStringKey(const std::string& locale,
-                             std::vector<Element>* elements,
-                             bool needs_stable_sort) {
-  SortVectorWithStringKey<Element>(locale, elements, 0, elements->size(),
-                                   needs_stable_sort);
-}
-
-}  // namespace l10n_util
-
-#endif  // UI_BASE_L10N_L10N_UTIL_COLLATOR_H_