文本字符替换

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#ios #delete #command #null #sql #2010

本文介绍了一个简单的C++程序，用于批量替换文本文件中的字符。通过定义特定的命令语法，该工具可以实现对源文件中指定字符串的多次替换，并将结果输出到另一个文件中。程序支持从命令行输入替换命令，适用于需要频繁进行文本替换的任务。

当需要进行多次替换操作时，使用UE等的替换功能需要手工操作多次，不是很方便

写这个程序以实现批量的替换字符，顺便练习下读写文件。

其实就是 sed + cp 操作

#include <iostream.h> #include <string.h> #include <fstream.h> class BatRepalce { public: BatRepalce() { memset(szString, 0, sizeof(szString)); memset(szBuf, 0, sizeof(szBuf)); cSig = '@'; cCom = ','; cTag = '&'; } void SetInName(char* in) { strcpy(szInName, in); } void SetOutName(char* out) { strcpy(szOutName, out); } void PutFile(); int GetString(); void Run(); int strRepalce(char* szText,char* to, const char* srcOld, char* decNew); void MuchRepalce(char* szCommand); void OneText(char* szRestr); void test(); protected: private: fstream infile; fstream outfile; char szInName[64]; char szOutName[64]; char szString[1024*64]; char szBuf[1024*64]; char* pStr; char* pBuf; char cSig; char cCom; char cTag; }; void BatRepalce::Run() { PutFile(); char command[2048] = {0}; cout << "输入替换命令: "; cin >> command; MuchRepalce(command); cout << "Complated" << endl;//O_A@O_K,O_A@O_K&O_A@O_F } void BatRepalce::PutFile() { char name[64]; cout << "输入源文件名: "; cin >> name; SetInName(name); cout << "输入目的文件名: "; cin >> name; SetOutName(name); } void BatRepalce::OneText(char* szRestr) { GetString(); char* p = szRestr; char szOld[128]; char szNew[128]; int i = 0; while (*p != '/0') { i = 0; while (*p != cSig && *p != '/0') { szOld[i++] = *p++; } if (*p == '/0') { cout << "输入命令有误" << endl; break; } szOld[i] = '/0'; i = 0; p++; while (*p != cCom && *p != cTag && *p != '/0') { szNew[i++] = *p++; } szNew[i] = '/0'; // strRepalce(pStr, pBuf, szOld, szNew); if (*p != '/0') { p++; } else { break; } } outfile << pStr << "/n/n"; outfile.flush(); infile.close(); outfile.close(); } void BatRepalce::MuchRepalce(char* szCommand) { int tagNum = 0; int length = 0; char* p = szCommand; while (*p != '/0') { if (*p == cTag) { tagNum++; } p++; length++; } // if (tagNum == 0) // { // return; // } char** szInstr = new char* [tagNum + 1]; for (int i = 0; i <= tagNum; i++) { szInstr[i] = new char[length + 1];//出现delete错误 } i = 0; p = szCommand; while (i <= tagNum) { int j = 0; while (*p != cTag && *p != '/0') { szInstr[i][j++] = *p++; } szInstr[i][j] = '/0'; OneText(szInstr[i]); p++; i++; } for (i = 0; i <= tagNum; i++) { delete [] szInstr[i]; } delete [] szInstr; } int BatRepalce::GetString() { char buf[1024] = {0}; // while (infile.getline(buf, 1024)) // { // strcat(szString, buf); // strcat(szString, "/n"); // } // strcat(szString, '/0'); infile.open(szInName, ios::in | ios::out); outfile.open(szOutName, ios::in | ios::app); infile.read(szString, 1024*64); int i = infile.gcount();// 尾部标记，避免被上次的数据覆盖 // cout << i << endl; szString[i] = '/0'; pStr = szString; pBuf = szBuf; return 1; } void BatRepalce::test() { // SetInName("tc.txt"); // SetOutName("t926.txt"); infile.open("t.txt", ios::in | ios::out); outfile.open("result.txt", ios::in | ios::app); GetString(); strRepalce(pStr, pBuf, "ll", "926"); outfile << pStr; infile.close(); outfile.close(); } int BatRepalce::strRepalce(char* szText,char* to, const char* szOld, char* szNew) { char * psrc = szText; char * pd = to; char * pnew = szNew; char* pos = NULL; int oldLength = strlen(szOld); while ( *psrc != '/0') { pos = strstr(psrc, szOld); while (psrc != pos && *psrc != '/0') { *pd++ = *psrc++; } if (pos != NULL) { while (*pnew != '/0' ) { *pd++ = *pnew++; } psrc += oldLength; } pnew = szNew; } *pd = '/0'; pStr = to; pBuf = szText; return 1; } void main() { BatRepalce t; t.Run(); }

输入源文件名: t1.txt
输入目的文件名:
t2.txt
输入替换命令: 2009@2010,ee@hello&2009@2012&2009@2013

t1.txt

hh2009k ee2

t2.txt

hh2010k hello2

hh2012k ee2

hh2013k ee2

在使用的时候出现了问题，不能接收空格字符，对程序作了些修改

2009-10-27

#include <iostream.h> #include <string.h> #include <fstream.h> //#include <string> class BatRepalce { public: BatRepalce() { memset(szString, 0, sizeof(szString)); memset(szBuf, 0, sizeof(szBuf)); cSig = '@'; cCom = ','; cTag = '&'; } void SetInName(char* in) { strcpy(szInName, in); } void SetOutName(char* out) { strcpy(szOutName, out); } void PutFile(); int GetString(); void Run(); int strRepalce(char* szText,char* to, const char* srcOld, char* decNew); void MuchRepalce(char* szCommand); void OneText(char* szRestr); void test(); protected: private: fstream infile; fstream outfile; char szInName[64]; char szOutName[64]; char szString[1024*64]; char szBuf[1024*64]; char* pStr; char* pBuf; char cSig; char cCom; char cTag; }; void BatRepalce::Run() { PutFile(); char command[2048] = {0}; cout << "输入替换命令: "; // cin >> command;//遇到空格就结束了 cin.getline(command, 1024); MuchRepalce(command); cout << "Complated" << endl;//O_A@O_K,O_A@O_K&O_A@O_F } void BatRepalce::PutFile() { char name[64] = "source.txt"; // cout << "输入源文件名: "; // cin >> name; SetInName(name); // cout << "输入目的文件名: "; // cin >> name; // getchar(); char newname[64] = "new.txt"; SetOutName(newname); } void BatRepalce::OneText(char* szRestr) { GetString(); char* p = szRestr; char szOld[128]; char szNew[128]; int i = 0; while (*p != '/0') { i = 0; while (*p != cSig && *p != '/0') { szOld[i++] = *p++; } if (*p == '/0') { cout << "输入命令有误" << endl; break; } szOld[i] = '/0'; i = 0; p++; while (*p != cCom && *p != cTag && *p != '/0') { szNew[i++] = *p++; } szNew[i] = '/0'; // strRepalce(pStr, pBuf, szOld, szNew); if (*p != '/0') { p++; } else { break; } } outfile << pStr << "/n/n"; outfile.flush(); infile.close(); outfile.close(); } void BatRepalce::MuchRepalce(char* szCommand) { int tagNum = 0; int length = 0; char* p = szCommand; while (*p != '/0') { if (*p == cTag) { tagNum++; } p++; length++; } // if (tagNum == 0) // { // return; // } char** szInstr = new char* [tagNum + 1]; for (int i = 0; i <= tagNum; i++) { szInstr[i] = new char[length + 1];//出现delete错误 } i = 0; p = szCommand; while (i <= tagNum) { int j = 0; while (*p != cTag && *p != '/0') { szInstr[i][j++] = *p++; } szInstr[i][j] = '/0'; OneText(szInstr[i]); p++; i++; } for (i = 0; i <= tagNum; i++) { delete [] szInstr[i]; } delete [] szInstr; } int BatRepalce::GetString() { char buf[1024] = {0}; // while (infile.getline(buf, 1024)) // { // strcat(szString, buf); // strcat(szString, "/n"); // } // strcat(szString, '/0'); infile.open(szInName, ios::in | ios::out); outfile.open(szOutName, ios::in | ios::app); infile.read(szString, 1024*64); int i = infile.gcount();// 尾部标记，避免被上次的数据覆盖 // cout << i << endl; szString[i] = '/0'; pStr = szString; pBuf = szBuf; return 1; } void BatRepalce::test() { // SetInName("tc.txt"); // SetOutName("t926.txt"); infile.open("t.txt", ios::in | ios::out); outfile.open("result.txt", ios::in | ios::app); GetString(); strRepalce(pStr, pBuf, "ll", "926"); outfile << pStr; infile.close(); outfile.close(); } int BatRepalce::strRepalce(char* szText,char* to, const char* szOld, char* szNew) { char * psrc = szText; char * pd = to; char * pnew = szNew; char* pos = NULL; int oldLength = strlen(szOld); while ( *psrc != '/0') { pos = strstr(psrc, szOld); while (psrc != pos && *psrc != '/0') { *pd++ = *psrc++; } if (pos != NULL) { while (*pnew != '/0' ) { *pd++ = *pnew++; } psrc += oldLength; } pnew = szNew; } *pd = '/0'; pStr = to; pBuf = szText; return 1; } void main() { BatRepalce t; t.Run(); }

源文件应保存在source.txt中
结果文件自动生成在new.txt中
源文件大小不超过1024*64，即64K

执行程序，输入替换命令
如
_Q @_E ,_Q_@_E_&_Q @_S ,_Q_@_S_&_Q @_R ,_Q_@_R_&_Q @_H ,_Q_@_H_

sql@SQL