C/C++ 读写文件
见《C/C++读写文本文件、二进制文件》:https://blog.csdn.net/nichengwuxiao/article/details/78789225
《C++fstream文件流处理对中文字符不支持的解决办法》https://my.oschina.net/abcijkxyz/blog/722482
FileDo.h
#pragma once
#include <string>
using namespace std;
void WriteBinFile(const char *filename, string Contain);
string ReadBinFile(const char *filename);
void WriteTxtFile(const char *filename, vector<string> vContain);
void ReadTxtFile(const char *filename, vector<string> &vText);
FileDo.cpp
#include <iostream>
#include <vector>
#include <string>
#include <fstream>
#define _AFXDLL
#include <afx.h>
#include <locale>
using namespace std;
void WriteBinFile(const char *filename, string Contain)
{
locale &loc=locale::global(locale(locale(),"",LC_CTYPE)); // 不论以输出文件流还是输入文件流,此操作应放在其两边
setlocale(LC_ALL,"Chinese-simplified");
ofstream fout(filename, ios::binary);
locale::global(loc); //还原全局区域设定
if(fout.is_open() == false){printf("Error: open failed!!!\n"); while (1);}
const unsigned int BlockSize = 1024;
char *buf = (char*)Contain.c_str();
int i;
for (i=0; i<Contain.length()/BlockSize; i++)fout.write(buf+BlockSize*i, BlockSize);
fout.write(buf+BlockSize*i, Contain.length()%BlockSize);
fout.close();
}
string ReadBinFile(const char *filename)
{
locale &loc=locale::global(locale(locale(),"",LC_CTYPE)); // 不论以输出文件流还是输入文件流,此操作应放在其两边
setlocale(LC_ALL,"Chinese-simplified");
ifstream fin(filename, ios::binary);
locale::global(loc); //还原全局区域设定
if(fin.is_open() == false){printf("Error: open failed!!! %s\n", filename); while (1);}
const unsigned int BlockSize = 1024;
string strRet;
char buf[BlockSize];
for (int i=0; ; i++)
{
fin.read(buf, BlockSize);
int read_size = fin.gcount();
if (read_size == 0)break;
strRet += string(buf, read_size);
}
fin.close();
#if 1
printf("《%s》内容为:", filename);
for (int i=0; i<strRet.length()&&i<16; i++)printf("%02X ", (unsigned char)strRet[i]);printf("等等\n");
#endif
return strRet;
}
void WriteTxtFile(const char *filename, vector<string> vContain)
{
locale &loc=locale::global(locale(locale(),"",LC_CTYPE)); // 不论以输出文件流还是输入文件流,此操作应放在其两边
setlocale(LC_ALL,"Chinese-simplified");
ofstream fout(filename);
locale::global(loc); //还原全局区域设定
if(fout.is_open() == false){printf("Error: open failed!!!\n"); while (1);}
for (int i=0; i<vContain.size(); i++)fout<<vContain[i]<<endl;
fout.close();
}
void ReadTxtFile(const char *filename, vector<string> &vText) // 如果文件太大,则不宜用返回值传递,有时如果太大,会很慢,相当于再读一遍的时间。
{
locale &loc=locale::global(locale(locale(),"",LC_CTYPE)); // 不论以输出文件流还是输入文件流,此操作应放在其两边
setlocale(LC_ALL,"Chinese-simplified");
ifstream fin(filename);
locale::global(loc); //还原全局区域设定
if(fin.is_open() == false){printf("Error: open failed!!! %s\n", filename); while (1);}
unsigned long TickOld = GetTickCount();
int lineCnt = 0;
for (string strLine; getline(fin, strLine); lineCnt++)
{
vText.push_back(strLine);
if (GetTickCount() - TickOld > 1000)
{
TickOld = GetTickCount();
printf("ReadTxtFile %d line\n", lineCnt);
}
}
fin.close();
printf("Read file End\n");
}