chromium/third_party/ced/src/util/case_insensitive_hash.h

// Copyright 2016 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.
//
////////////////////////////////////////////////////////////////////////////////

#ifndef UTIL_CASE_INSENSITIVE_HASH_H_
#define UTIL_CASE_INSENSITIVE_HASH_H_

#include <ctype.h>
#include <stddef.h>
#ifndef _MSC_VER
#include <strings.h>
#endif

#include <string>

#include "util/basictypes.h"
#include "util/string_util.h"

// Functors for hashing c-strings with case-insensitive semantics.
struct CStringCaseHash { … };

struct CStringCaseEqual { … };

// These functors, in addition to being case-insensitive, ignore all
// non-alphanumeric characters.  This is useful when we want all variants of
// a string -- where variants can differ in puncutation and whitespace -- to
// map to the same value.
struct CStringAlnumCaseHash { … };

struct CStringAlnumCaseEqual { … };

#endif  // UTIL_CASE_INSENSITIVE_HASH_H_