C 读取ini文件
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前言：
在Windows下可以用GetPrivateProfileString或GetPrivateProfileInt方便读取.ini配置文件内容，但是在Linux平台上就一筹莫展了。为了解决该问题，打算用C来读取.ini，即可不受平台的限制了。
#define CONF_FILE_PATH "Config.ini" #include#ifdef WIN32 #include #include #else #define MAX_PATH 260 #include #include #include #include #include #endif char g_szConfigPath[MAX_PATH]; //获取当前程序目录 int GetCurrentPath(char buf[],char *pFileName) { #ifdef WIN32 GetModuleFileName(NULL,buf,MAX_PATH); #else char pidfile[64]; int bytes; int fd; sprintf(pidfile, "/proc/%d/cmdline", getpid()); fd = open(pidfile, O_RDONLY, 0); bytes = read(fd, buf, 256); close(fd); buf[MAX_PATH] = '\0'; #endif char * p = &buf[strlen(buf)]; do { *p = '\0'; p--; #ifdef WIN32 } while('\\' != *p ); #else } while('/' != *p ); #endif p++; //配置文件目录 memcpy(p,pFileName,strlen(pFileName)); return 0; } //从INI文件读取字符串类型数据 char *GetIniKeyString(char *title,char *key,char *filename) { FILE *fp; char szLine[1024]; static char tmpstr[1024]; int rtnval; int i = 0; int flag = 0; char *tmp; if((fp = fopen(filename,"r")) == NULL) { printf("have no such file \n"); return ""; } while(!feof(fp)) { rtnval = fgetc(fp); if(rtnval == EOF) { break; } else { szLine[i++] = rtnval; } if(rtnval == '\n') { #ifndef WIN32 i--; #endif szLine[--i] = '\0'; i = 0; tmp = strchr(szLine, '='); if(( tmp != NULL )&&(flag == 1)) { if(strstr(szLine,key)!=NULL) { //注释行 if ('#' == szLine[0]) { } else if ( '\/' == szLine[0] && '\/' == szLine[1] ) { } else { //找打key对应变量 strcpy(tmpstr,tmp+1); fclose(fp); return tmpstr; } } } else { strcpy(tmpstr,"["); strcat(tmpstr,title); strcat(tmpstr,"]"); if( strncmp(tmpstr,szLine,strlen(tmpstr)) == 0 ) { //找到title flag = 1; } } } } fclose(fp); return ""; } //从INI文件读取整类型数据 int GetIniKeyInt(char *title,char *key,char *filename) { return atoi(GetIniKeyString(title,key,filename)); } int main(int argc,char* argv[]) { char buf[MAX_PATH]; memset(buf,0,sizeof(buf)); GetCurrentPath(buf,CONF_FILE_PATH); strcpy(g_szConfigPath,buf); int iCatAge; char szCatName[32]; iCatAge = GetIniKeyInt("CAT","age",g_szConfigPath); strcpy(szCatName,GetIniKeyString("CAT","name",g_szConfigPath)); return 0; }
#define CONF_FILE_PATH "Config.ini" #include#ifdef WIN32 #include #include #else #define MAX_PATH 260 #include #include #include #include #include #endif char g_szConfigPath[MAX_PATH]; //获取当前程序目录 int GetCurrentPath(char buf[],char *pFileName) { #ifdef WIN32 GetModuleFileName(NULL,buf,MAX_PATH); #else char pidfile[64]; int bytes; int fd; sprintf(pidfile, "/proc/%d/cmdline", getpid()); fd = open(pidfile, O_RDONLY, 0); bytes = read(fd, buf, 256); close(fd); buf[MAX_PATH] = '\0'; #endif char * p = &buf[strlen(buf)]; do { *p = '\0'; p--; #ifdef WIN32 } while( '\\' != *p ); #else } while( '/' != *p ); #endif p++; //配置文件目录 memcpy(p,pFileName,strlen(pFileName)); return 0; } //从INI文件读取字符串类型数据 char *GetIniKeyString(char *title,char *key,char *filename) { FILE *fp; char szLine[1024]; static char tmpstr[1024]; int rtnval; int i = 0; int flag = 0; char *tmp; if((fp = fopen(filename, "r")) == NULL) { printf("have no such file \n"); return ""; } while(!feof(fp)) { rtnval = fgetc(fp); if(rtnval == EOF) { break; } else { szLine[i++] = rtnval; } if(rtnval == '\n') { #ifndef WIN32 i--; #endif szLine[--i] = '\0'; i = 0; tmp = strchr(szLine, '='); if(( tmp != NULL )&&(flag == 1)) { if(strstr(szLine,key)!=NULL) { //注释行 if ('#' == szLine[0]) { } else if ( '\/' == szLine[0] && '\/' == szLine[1] ) { } else { //找打key对应变量 strcpy(tmpstr,tmp+1); fclose(fp); return tmpstr; } } } else { strcpy(tmpstr,"["); strcat(tmpstr,title); strcat(tmpstr,"]"); if( strncmp(tmpstr,szLine,strlen(tmpstr)) == 0 ) { //找到title flag = 1; } } } } fclose(fp); return ""; } //从INI文件读取整类型数据 int GetIniKeyInt(char *title,char *key,char *filename) { return atoi(GetIniKeyString(title,key,filename)); } int main(int argc, char* argv[]) { char buf[MAX_PATH]; memset(buf,0,sizeof(buf)); GetCurrentPath(buf,CONF_FILE_PATH); strcpy(g_szConfigPath,buf); int iCatAge; char szCatName[32]; iCatAge = GetIniKeyInt("CAT","age",g_szConfigPath); strcpy(szCatName,GetIniKeyString("CAT","name",g_szConfigPath)); return 0; }
下边是配置文件：
[CAT] age=2 name=Tom
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