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52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
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#ifndef __EXCEPTION_H__
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#define __EXCEPTION_H__
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/*
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* Exception.h
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* ZXing
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*
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* Copyright 2010 ZXing authors All rights reserved.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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#include <string>
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#include <exception>
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namespace zxing {
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class Exception : public std::exception {
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private:
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char const* const message;
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public:
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Exception() throw() : message(0) {}
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Exception(const char* msg) throw() : message(copy(msg)) {}
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Exception(Exception const& that) throw() : std::exception(that), message(copy(that.message)) {}
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~Exception() throw() {
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if(message) {
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deleteMessage();
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}
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}
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char const* what() const throw() {return message ? message : "";}
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private:
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static char const* copy(char const*);
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void deleteMessage();
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};
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}
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#endif // __EXCEPTION_H__
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