linux c，ini配置文件读写模块

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <arpa/inet.h> #include <fcntl.h> int CopyFile(char *pcDstFile, char *pcSrcFile) { FILE *fpr = NULL; FILE *fpw = NULL; int iLen = 0; int iFileLen = 0; int iSize = 0; char acBuf[4096]; if (NULL == pcDstFile || NULL == pcSrcFile) { return -1; } fpr = fopen(pcSrcFile, "rb"); if (fpr == NULL) { perror("open read file:"); return -1; } fpw = fopen(pcDstFile, "wb"); if (fpw == NULL) { printf("[%s]open write file %s\n", __FUNCTION__, pcDstFile); perror("open write file error:"); return -1; } while (1) { iLen = fread(acBuf, 1, sizeof(acBuf), fpr); if (iLen <= 0) { printf("read file over\n"); break; } iSize = fwrite(acBuf, 1, iLen, fpw); if (iSize != iLen) { perror("wirte file error:"); fclose(fpr); fclose(fpw); return -1; } iFileLen += iLen; } fflush(fpw); fsync(fileno(fpw)); fclose(fpr); fclose(fpw); return iFileLen; } int ModifyParam(char *pcFileName, char *pcKey, char *pcValue) { FILE *pOldFile = NULL; FILE *pNewFile = NULL; char acTmpName[128]; char acBuf[256]; int iFlag = 0; pOldFile = fopen(pcFileName, "rb"); if (NULL == pOldFile) { printf("[%s] open file %s error\n", __FUNCTION__, pcFileName); perror(":"); return -1; } snprintf(acTmpName, sizeof(acTmpName), "%s~", pcFileName); pNewFile = fopen(acTmpName, "wb"); if (NULL == pNewFile) { printf("[%s] open file %s error\n", __FUNCTION__, acTmpName); perror(":"); fclose(pOldFile); return -1; } while (fgets(acBuf, sizeof(acBuf), pOldFile)) { if (memcmp(acBuf, pcKey, strlen(pcKey)) == 0) { snprintf(acBuf, sizeof(acBuf), "%s=%s\n", pcKey, pcValue); fputs(acBuf, pNewFile); iFlag++; } else { fputs(acBuf, pNewFile); } } // 如果没有此项，则添加一项 if (0 == iFlag) { snprintf(acBuf, sizeof(acBuf), "%s=%s\n", pcKey, pcValue); fputs(acBuf, pNewFile); } fflush(pNewFile); fsync(fileno(pNewFile)); fclose(pOldFile); fclose(pNewFile); //rename(acTmpName, pcFileName); CopyFile(pcFileName, acTmpName); return 0; } int ReadParam(char *pcFileName, char *pcKey, char *pcValue) { FILE *pFile = NULL; char acBuf[128]; char *pcPos = NULL; int iLen = 0; int iRet = -1; pFile = fopen(pcFileName, "rb"); if (NULL == pFile) { printf("[%s] open file %s error\n", __FUNCTION__, pcFileName); perror(":"); return -1; } while (fgets(acBuf, sizeof(acBuf), pFile)) { if (memcmp(acBuf, pcKey, strlen(pcKey)) == 0) { pcPos = acBuf; strsep(&pcPos, "="); if (NULL == pcPos) { printf("line:%s, param error!!!\n", acBuf); break; } iLen = strlen(pcPos); if (iLen > 0) pcPos[iLen-1] = '\0'; strcpy(pcValue, pcPos); iRet = 0; break; } } fclose(pFile); return iRet; }