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68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
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/**********************************************************************
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* File: util.h
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* Description: Misc STL string utility functions.
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* Author: Samuel Charron
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* Created: Mon Nov 18 2013
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*
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* (C) Copyright 2013, Google Inc.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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**********************************************************************/
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#ifndef TESSERACT_TRAINING_UTIL_H_
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#define TESSERACT_TRAINING_UTIL_H_
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#include <stddef.h>
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#include <stdlib.h>
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#include <string>
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#ifdef USE_STD_NAMESPACE
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using std::string;
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using std::vector;
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#endif
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// StringHash is the hashing functor needed by the stl hash map.
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#ifndef COMPILER_MSVC
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struct StringHash {
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size_t operator()(const string& s) const {
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size_t hash_code = 0;
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const char* str = s.c_str();
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for (int ch = 0; str[ch] != 0; ++ch) {
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hash_code += str[ch] << (ch % 24);
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}
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return hash_code;
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}
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};
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#else // COMPILER_MSVC
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struct StringHash : public stdext::hash_compare <string> {
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size_t operator()(const string& s) const {
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size_t hash_code = 0;
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const char* str = s.c_str();
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for (int ch = 0; str[ch] != 0; ++ch) {
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hash_code += str[ch] << (ch % 24);
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}
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return hash_code;
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}
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bool operator()(const string& s1, const string& s2) const {
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return s1 == s2;
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}
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};
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#endif // !COMPILER_MSVC
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#ifndef USE_STD_NAMESPACE
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#include "base/heap-checker.h"
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#define DISABLE_HEAP_LEAK_CHECK HeapLeakChecker::Disabler disabler
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#else
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#define DISABLE_HEAP_LEAK_CHECK {}
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#endif
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#endif // TESSERACT_TRAINING_UTIL_H_
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