如果配置文件时这样的：
#this is a simple configure file
myname=yuqiang
age=23
..
..
..
那面下面两个函数应该操作的不错：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | /* * getConf: get a config value from a configfile. * * args: * confname: config name * value: the value of config name * * return: * 0: success * -1: failed * */ int getConf(const char *configfile, const char *confname, char *value) { int i; char line[128]={0}; char conbuff[128]={0}; int math=0; FILE *f=fopen(configfile,"r"); if(f==NULL) { show_debug_info( 1,"[error] open config file %s",configfile); return -1; } while( fgets(line,sizeof(line),f) ) { if( *line=='#' || *line=='\n' ) { memset(line,0,sizeof(line)); continue; } memset(conbuff,0,sizeof(conbuff)); i=0; while( line[i]!='=' && i<strlen(line)-1 ) { conbuff[i]=line[i]; i++; } if( i==strlen(line) ) { memset(line,0,sizeof(line)); continue; } if( strcmp(conbuff,confname) ) { memset(line,0,sizeof(line)); continue; } else { if( strlen(confname)+2==strlen(line) ) return -1; math=1; memset(value,0,strlen(value)); memcpy(value,line+strlen(confname)+1,strlen(line)-strlen(confname)-2);//还有一个'\n' //printf("|%s|=|%s|\n",confname,value); break; } memset(line,0,sizeof(line)); } fclose(f); if(math) return 0; else return -1; } /* * setConf: set a config value to a configfile. * * args: * confname: config name * value: the value of config name * * return : * 0: success * 1: add a new config * -1: failed * */ int setConf(const char *configfile, const char *confname, const char *value) { char conbuff[128]={0}; int i; char line[128]={0}; int math=0; FILE *f=fopen(configfile,"r"); if(f==NULL) { FILE *newf=fopen(configfile,"a"); if(newf==NULL) { show_debug_info( 1,"[error] open config file %s",configfile); return -1; } sprintf(conbuff,"%s=%s\n",confname,value); fputs(conbuff,newf); fclose(newf); return 1; } /* open a tmp file to save config */ FILE *tmp=tmpfile(); if(tmp==NULL) { return -1; } /*parse config file and save to tmp file*/ while( fgets(line,sizeof(line),f) ) { memset(conbuff,0,sizeof(conbuff)); if( *line=='#' || *line=='\n' ) { fputs(line,tmp); memset(line,0,sizeof(line)); continue; } i=0; while( line[i]!='=' && i<strlen(line) ) { conbuff[i]=line[i]; i++; } if( strcmp(conbuff,confname) ) { fputs(line,tmp); } else { math=1; memset(conbuff,0,sizeof(conbuff)); sprintf(conbuff,"%s=%s\n",confname,value); fputs(conbuff,tmp); } memset(line,0,sizeof(line)); } if(math==0) { memset(conbuff,0,sizeof(conbuff)); sprintf(conbuff,"%s=%s\n",confname,value); fputs(conbuff,tmp); } fclose(f); fflush(tmp); rewind(tmp); /*copy tmp file's data to config file*/ f=fopen(configfile,"w+"); if(f==NULL) { show_debug_info( 1,"[error] open config file %s",configfile); return -1; } memset(line,0,sizeof(line)); while( fgets(line,sizeof(line),tmp) ) { fputs(line,f); memset(line,0,sizeof(line)); } fclose(tmp); fclose(f); if(math) return 0; else return 1; } |