C++程序调试输出并写入文件（Linux/Windows）

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#include "DebugOut.h"DebugOut::DebugOut(){m_sFilePath = NULL;}DebugOut::DebugOut(char* sFilePath){m_sFilePath = sFilePath;}DebugOut::~DebugOut(){}/************************************************************************//* 功能描述：把调试信息写入到文件中                                     *//* 参数说明：                                                           *//*           sFilePath：文件保存路径                                    *//*           sInfo    ：待写入文件中的调试信息                          *//* 返回值 ：                                                            *//*           0：失败                                                    *//*           1：成功                                                    *//************************************************************************/int DebugOut::WriteToFile(const char* sFilePath, const char* sInfo){if (sFilePath == NULL){return 0;}if (strcmp(sFilePath, "") == 0){return 0;}FileRename(sFilePath);FILE* fp = fopen(sFilePath, "a+");if (fp == NULL){return -1;}fwrite(sInfo, strlen(sInfo+1), 1, fp);fclose(fp);return 0;}/************************************************************************//* 功能描述：从文件路径中解析出文件保存目录、文件名、文件后缀、文件长度 *//* 参数说明：                                                           *//*           sFilePath：文件绝对路径                                    *//*           sDir     ：文件所存目录                                    *//*           sFileName：文件名                                          *//*           sSufix   ：文件后缀                                        *//*           iFileLen ：文件长度（字节）                                *//* 返回值 ：                                                            *//*           0：失败                                                    *//*           1：成功                                                    *//************************************************************************/int DebugOut::FilePathParse(const char* sFilePath, char* sDir, char* sFileName, char* sSufix, int* iFileLen){//获取文件大小(字节)FILE* fp = fopen(sFilePath, "a+");if (fp == NULL){return 0;}fseek(fp, 0L, SEEK_END);*iFileLen = ftell(fp);fclose(fp);//获取文件int iLen = strlen(sFilePath);int iPos = -1;for (int i=0; i<iLen; i++){if ((sFilePath[i] == '\\') || (sFilePath[i] == '/')){iPos = i;}}char strFile[256] = {0};int j = 0;for (int i=iPos+1; i<iLen; i++){strFile[j++] = sFilePath[i];}strFile[j] = '\0';//获取文件所在目录if (iPos >= 0){int k = 0;for (int i=0; i<=iPos; i++){sDir[k++] = sFilePath[i];}sDir[k] = '\0';}//获取文件名int k = 0;for (unsigned int i=0; i<strlen(strFile); i++){if (strFile[i] == '.'){k = i;sFileName[i] = '\0';break;} else {sFileName[i] = strFile[i];}}//获取文件后缀if(k > 0){int j = 0;for (unsigned int i=k+1; i< strlen(strFile) ; i++){sSufix[j++] = strFile[i];}sSufix[j] = '\0';}return 1;}/************************************************************************//* 功能描述：当文件大小超出指定大小时重命名文件                         *//* 参数说明：                                                           *//*           sFilePath：文件保存路径                                    *//* 返回值 ：                                                            *//*           0：失败                                                    *//*           1：成功                                                    *//************************************************************************/int DebugOut::FileRename(const char* sFilePath){int  iFileLen       = 0;char sFileName[256] = {0};char sDir[256]      = {0};char sSufix[256]    = {0};if(0 == FilePathParse(sFilePath, sDir, sFileName, sSufix, &iFileLen)){return 0;}if (iFileLen > MAXLEN){char tmpPath[256] = {0};#if (OS_TYPE == Windows_OS)int i = 0;struct _finddata_t FileInfo;while (1){sprintf(tmpPath, "%s%s_%d.%s", sDir, sFileName, i++, sSufix);if(_findfirst(tmpPath, &FileInfo) == -1L){break;}}#endif#if (OS_TYPE == Linux_OS)struct dirent *dp = NULL;DIR *pDir = opendir(sDir);char allFileName[4096] = {0};while((dp = readdir(pDir)) != NULL){strcat(allFileName, "$");strcat(allFileName, dp->d_name);}char tmpName[32] = {0};int i = 0;while(1){sprintf(tmpName, "%s_%d.%s", sFileName, i++, sSufix);if(NULL == strstr(allFileName, tmpName)){break;}}strcpy(tmpPath, sDir);strcat(tmpPath, tmpName);#endifif(-1 == rename(sFilePath, tmpPath)){printf("rename failed. error code:%d, error message:%s\n", errno, strerror(errno));return 0;}}return 1;}/************************************************************************//* 功能描述：获取当前时间                                               *//* 参数说明：无                                                         *//* 返回值  ：返回当前时间                                               *//************************************************************************/char* DebugOut::GetCurrentTime() {char* strTime = (char*)malloc(32);memset(strTime, 0, 32);time_t timeTmp;time(&timeTmp);struct tm *ptm = localtime(&timeTmp);struct tm *ptm2 = (struct tm *)malloc(sizeof(struct tm));memset(ptm2, 0, sizeof(struct tm));memcpy(ptm2, ptm, sizeof(struct tm));sprintf(strTime, "[%04d-%02d-%02d %02d:%02d:%02d] ", (1900+ptm2->tm_year), (1+ptm2->tm_mon), ptm2->tm_mday, ptm2->tm_hour, ptm2->tm_min, ptm2->tm_sec);free(ptm2);ptm2 = NULL;return strTime;}/************************************************************************//* 功能描述：格式化打印输出，并写入文件                                 *//* 参数说明：变参                                                       *//* 返回值  ：无                                                         *//************************************************************************/void DebugOut::Printf(const char *fmt, ...){char* buf = (char*)malloc(40960);memset(buf, 0, 40960);va_list args;va_start(args, fmt);vsnprintf(buf, 4096, fmt, args);va_end(args);char* sTime = GetCurrentTime();char* sTmp = (char*)malloc(41000);memset(sTmp, 0, 41000);strcpy(sTmp, sTime);strcat(sTmp, buf);#ifdef _DEBUGputs(sTmp);#endifstrcat(sTmp, "\n\r");WriteToFile(m_sFilePath, sTmp);free(sTime);sTime = NULL;free(buf);buf = NULL;free(sTmp);sTmp = NULL;}

#ifndef __DEBUGOUTTOFILE__#define __DEBUGOUTTOFILE__#include <stdlib.h>#include <string.h>#include <time.h>#include <stdio.h>#include <stdarg.h>#define Windows_OS 1#define Linux_OS   2#define OS_TYPE 2#if (OS_TYPE == Windows_OS)#include <io.h>#endif#if (OS_TYPE == Linux_OS)#include <dirent.h>#include <errno.h>#define _DEBUG#endif//#define MAXLEN 4194304#define MAXLEN 128class DebugOut{public:DebugOut();DebugOut(char* sFilePath);~DebugOut();void Printf(const char *fmt, ...);private:char* GetCurrentTime();int WriteToFile(const char* sFilePath, const char* sInfo);int FilePathParse(const char* sFilePath, char* sDir, char* sFileName, char* sSufix, int* iFileLen);int FileRename(const char* sFilePath);char* m_sFilePath;};#endif

#include "DebugOut.h"int main(){DebugOut* debugOut = new DebugOut((char *)"/root/test.txt");debugOut->Printf("%s %s %d", __FILE__, __FUNCTION__, __LINE__);debugOut->Printf("%s %s %d", __FILE__, __FUNCTION__, __LINE__);return 0;}

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