配置文件在Linux下使用得非常普遍，但是Linux下没有统一个配置文件标准。

我们把配置文件的规则制定如下：

1、把“#”视作注释开始

2、所有的配置项都都是以键值对的形式出现

3、严格区分大小写

4、允许数据类型为整型的配置项

5、允许数据类型为字符串类型的配置项

6、允许数据类型为逻辑型的配置项，取值为yes或者no。

 

同时我们需要对配置文件做初始化和载入两个操作。

 

代码如下：

/* confparser.c*/ #ifndef CONFPARSER_H#define CONFPARSER_H #include 
    
     using namespace std; #define MAX_CONF_LEN  1024#define CONF_FILE     "spider.conf" /* see the spiderq.conf to get meaning foreach member variable below */typedef struct Config {   int              max_job_num;   char            *seeds;   char            *include_prefixes;   char            *exclude_prefixes;   char            *logfile;   int              log_level;   int              max_depth;   int              make_hostdir;   int              stat_interval;    char *           module_path;   vector
     
         modules;   vector
      
         accept_types;}; extern Config * initconfig(); extern void loadconfig(Config *conf); #endif
      
     
    

/* confparser.c*/ #include "spider.h"#include "qstring.h"#include "confparser.h" #define INF 0x7FFFFFFF Config * initconfig(){   Config *conf = (Config *)malloc(sizeof(Config));    conf->max_job_num = 10;   conf->seeds = NULL;   conf->include_prefixes = NULL;   conf->exclude_prefixes = NULL;   conf->logfile = NULL;   conf->log_level = 0;   conf->max_depth = INF;   conf->make_hostdir = 0;   conf->module_path = NULL;   conf->stat_interval = 0;   //conf->modules    return conf;} void loadconfig(Config *conf){   FILE *fp = NULL;   char buf[MAX_CONF_LEN+1];   int argc = 0;   char **argv = NULL;   int linenum = 0;   char *line = NULL;   const char *err = NULL;    if ((fp = fopen(CONF_FILE, "r")) == NULL) {       SPIDER_LOG(SPIDER_LEVEL_ERROR, "Can't load conf_file %s",CONF_FILE);          }    while (fgets(buf, MAX_CONF_LEN+1, fp) != NULL) {       linenum++;       line = strim(buf);        if (line[0] == '#' || line[0] == '\0') continue;        argv = strsplit(line, '=', &argc, 1);       if (argc == 2) {           if (strcasecmp(argv[0], "max_job_num") == 0) {                conf->max_job_num =atoi(argv[1]);           } else if (strcasecmp(argv[0], "logfile") == 0) {               conf->logfile =strdup(argv[1]);           } else if (strcasecmp(argv[0], "include_prefixes") == 0) {                conf->include_prefixes =strdup(argv[1]);           } else if (strcasecmp(argv[0], "exclude_prefixes") == 0) {                conf->exclude_prefixes =strdup(argv[1]);           } else if (strcasecmp(argv[0], "seeds") == 0) {                conf->seeds =strdup(argv[1]);           } else if (strcasecmp(argv[0], "module_path") == 0) {                conf->module_path =strdup(argv[1]);           } else if (strcasecmp(argv[0], "load_module") == 0) {               conf->modules.push_back(strdup(argv[1]));           } else if (strcasecmp(argv[0], "log_level") == 0) {                conf->log_level =atoi(argv[1]);           } else if (strcasecmp(argv[0],"max_depth") == 0) {                conf->max_depth =atoi(argv[1]);           } else if (strcasecmp(argv[0], "stat_interval") == 0) {                conf->stat_interval =atoi(argv[1]);           } else if (strcasecmp(argv[0], "make_hostdir") == 0) {                conf->make_hostdir =yesnotoi(argv[1]);           } else if (strcasecmp(argv[0], "accept_types") == 0) {               conf->accept_types.push_back(strdup(argv[1]));            } else {                err = "Unknowndirective"; goto conferr;           }       } else {           err = "directive must be 'key=value'"; goto conferr;       }     }   return; conferr:   SPIDER_LOG(SPIDER_LEVEL_ERROR, "Bad directive in %s[line:%d]%s", CONF_FILE, linenum, err);  }