charset convert

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/****************************************************************************@File Name: convert.h@Author: wangzhicheng@mail: 2363702560@qq.com@Created Time: Fri 24 Feb 2017 04:44:36 PM CST   2017-02-26@Brief convert a kind of character set to another kind****************************************************************************/#ifndef CONVERT_H#define CONVERT_H#include <iconv.h>#include <string>namespace charset_convert{using namespace std;static const int MAXLEN = 1024;class Convert{private:iconv_t m_id;public:Convert();~Convert();/* * @brief init iconv  * @return true if init ok * */bool Init(const string &from_set, const string &to_set);/* * @brief execute convertion * @return true if convert ok * */bool convert(const string &src, string &dest);};}#endif/****************************************************************************@File Name: convert.cpp@Author: wangzhicheng@mail: 2363702560@qq.com@Created Time: Fri 24 Feb 2017 04:44:36 PM CST   2017-02-26@Brief convert a kind of character set to another kind****************************************************************************/#include "convert.h"namespace charset_convert{Convert::Convert(){m_id = 0;}/* * @brief init iconv  * @return true if init ok * */bool Convert::Init(const string &from_set, const string &to_set){m_id = iconv_open(to_set.c_str(), from_set.c_str());return m_id;}/* * @brief execute convertion * @return true if convert ok * */bool Convert::convert(const string &src, string &dest){size_t inlen = src.size();if(inlen > MAXLEN) return false;char *p_src = (char *)src.c_str();dest.assign(MAXLEN << 1, 0);size_t outlen = dest.size();char *p_dest = (char *)dest.c_str();if(iconv(m_id, &p_src, &inlen, &p_dest, &outlen) < 0) return false;if(inlen) return false;return true;}Convert::~Convert(){if(m_id){iconv_close(m_id);m_id = 0;}}}/****************************************************************************@File Name: test.cpp@Author: wangzhicheng@mail: 2363702560@qq.com@Created Time: Fri 24 Feb 2017 05:02:03 PM CST   2017-02-26****************************************************************************/#include "convert.h"#include <iostream>using namespace charset_convert;int main(){ Convert convert; if(!convert.Init("utf-8", "gb2312"))  { cerr << "convert init failed...!" << endl;return -1; } string src = "I am linux...!"; string dest; if(convert.convert(src, dest)) { cout << dest << endl;return 0; } return -1;}CC=g++all:$(CC) -std=c++11 -g -o convertTest test.cpp convert.h convert.cpp
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