https://blog.csdn.net/TMT123421/article/details/81369448
文章目录
O、简介
一、API
二、使用
三、 一些问题
O、简介
C语言配置文件解析库 — iniparser可以方便的对配置文件进行解析、添加、修改、删除等操作。
github地址
iniparser官网
我的CSDN下载（v4.1-20180802）
配置文件格式：
注释：iniparser会无视注释，注释以英文分号开头（;这是配置文件注释）
注释结构：配置文件包含两个基本单元 section 和 key。其中 section 相当于一组 key 的名字，section下面包含 0或多个key，每个 key 是配置文件的最小单元。
;section注释
[setion1]
key11 = value11
key12 = value12
[setion2]
key21 = value21
key22 = value22
...
注意: iniparser 的一条原则是 section 和 key 大小写无关，写入的字符串全部小写化，取出的字符串也全部小写化。
一、API
int iniparser_getnsec(dictionary * d); //获取dictionary对象的section个数
char * iniparser_getsecname(dictionary * d, int n); //获取dictionary对象的第n个section的名字
void iniparser_dump_ini(dictionary * d, FILE * f); //保存dictionary对象到file
void iniparser_dumpsection_ini(dictionary * d, char * s, FILE * f); //保存dictionary对象一个section到file
void iniparser_dump(dictionary * d, FILE * f); //打印整个配置文件信息(f赋值为stdout则输出到终端)
int iniparser_getsecnkeys(dictionary * d, char * s); //获取dictionary对象某个section下的key个数
char ** iniparser_getseckeys(dictionary * d, char * s); //获取dictionary对象某个section下所有的key
char * iniparser_getstring(dictionary * d, const char * key, char * def); //返回dictionary对象的section:key对应的字串值
int iniparser_getint(dictionary * d, const char * key, int notfound); //返回idictionary对象的section:key对应的整形值
double iniparser_getdouble(dictionary * d, const char * key, double notfound); //返回dictionary对象的section:key对应的双浮点值
int iniparser_getboolean(dictionary * d, const char * key, int notfound); //返回dictionary对象的section:key对应的布尔值
int iniparser_set(dictionary * ini, const char * entry, const char * val); //设置dictionary对象的某个section:key的值
void iniparser_unset(dictionary * ini, const char * entry); //删除dictionary对象中某个section:key
int iniparser_find_entry(dictionary * ini, const char * entry) ; //判断dictionary对象中是否存在某个section:key
dictionary * iniparser_load(const char * ininame); //解析dictionary对象并返回(分配内存)dictionary对象
void iniparser_freedict(dictionary * d); //释放dictionary对象(内存)
unsigned dictionary_hash(const char * key); //计算关键词的hash值
dictionary * dictionary_new(int size); //创建dictionary对象
void dictionary_del(dictionary * vd); //删除dictionary对象
char * dictionary_get(dictionary * d, const char * key, char * def); //获取dictionary对象的key值
int dictionary_set(dictionary * vd, const char * key, const char * val); //设置dictionary对象的key值
void dictionary_unset(dictionary * d, const char * key); //删除dictionary对象的key值
void dictionary_dump(dictionary * d, FILE * out); //保存dictionary对象
二、使用
1、准备
下载源码，提取 src 中 4个源文件(dictionary.h、dictionary.c、iniparser.h、iniparser.c)，测试中添加到新建的 iniparser 目录中；
由于 iniparser 是 dictionary 的再次封装，使用时引用 iniparser.h 即可；
创建配置测试文件(test_parser.ini)；
;test_parser.ini
[it]
macbook = apple
xiaomi = MI
[browser]
chrome = google
firefox = mozilla
ie = microsoft
[server]
ip = 127.0.0.1
port = 10010
[testUpper]
upper = Upper
2、解析、取值、修改、删除等基本操作
// name: ini_parser.c
// date: 2018-08-02
#include
#include
#include "iniparser/iniparser.h"
void main(){
dictionary *dict = NULL;
printf("---------------------------------load-------------------------------\r\n");
dict = iniparser_load("./test_parser.ini");
if(NULL == dict){
printf("iniparser load ini file failed, please check it...\r\n");
exit(0);
}
iniparser_dump(dict, stdout);
printf("---------------------------------read-------------------------------\r\n");
printf("it_macbook: %s\r\n", iniparser_getstring(dict, "it:macbook", ""));
printf("server_port: %d\r\n", iniparser_getint(dict, "server:port", 0));
printf("---------------------------------find-------------------------------\r\n");
if(iniparser_find_entry(dict, "server:ip")){
printf("find entry server:ip, the value is: %s\r\n", iniparser_getstring(dict, "server:ip", ""));
}else{
printf("the entry server:ip not exist...\r\n");
}
if(iniparser_find_entry(dict, "it:golang")){
printf("find entry it:golang, the value is: %s\r\n", iniparser_getstring(dict, "it:golang", ""));
}else{
printf("the entry it:golang not exist...\r\n");
}
printf("---------------------------------set-------------------------------\r\n");
if(!iniparser_set(dict, "it:golang", "google")){
printf("set it:golang entry OK.\r\n");
}else{
printf("set it:golang entry failed.\r\n");
}
if(iniparser_find_entry(dict, "it:golang")){
printf("find entry it:golang, the value is: %s\r\n", iniparser_getstring(dict, "it:golang", ""));
}else{
printf("the entry it:golang not exist...\r\n");
}
printf("---------------------------------unset-------------------------------\r\n");
iniparser_unset(dict, "it:golang");
if(iniparser_find_entry(dict, "it:golang")){
printf("find entry it:golang, the value is: %s\r\n", iniparser_getstring(dict, "it:golang", ""));
}else{
printf("the entry it:golang not exist...\r\n");
}
printf("---------------------------------dump ini-------------------------------\r\n");
if(!iniparser_set(dict, "it:golang", "google")){
printf("set it:golang entry OK.\r\n");
}else{
printf("set it:golang entry failed.\r\n");
}
FILE *ini_file = fopen("./test_parser.ini", "w");
iniparser_dump_ini(dict, ini_file);
fclose(ini_file);
iniparser_dump(dict, stdout);
iniparser_freedict(dict);
printf("---------------------------------END-------------------------------\r\n");
}
# 编译
$ gcc ini_parser.c iniparser/*.c
# 结果
$ ./a.out
---------------------------------load-------------------------------
[it]=UNDEF
[it:macbook]=[apple]
[it:xiaomi]=[MI]
[browser]=UNDEF
[browser:chrome]=[google]
[browser:firefox]=[mozilla]
[browser:ie]=[microsoft]
[server]=UNDEF
[server:ip]=[127.0.0.1]
[server:port]=[10010]
[testupper]=UNDEF
[testupper:upper]=[Upper]
---------------------------------read-------------------------------
it_macbook: apple
server_port: 10010
---------------------------------find-------------------------------
find entry server:ip, the value is: 127.0.0.1
the entry it:golang not exist...
---------------------------------set-------------------------------
set it:golang entry OK.
find entry it:golang, the value is: google
---------------------------------unset-------------------------------
the entry it:golang not exist...
---------------------------------dump ini-------------------------------
set it:golang entry OK.
[it]=UNDEF
[it:macbook]=[apple]
[it:xiaomi]=[MI]
[browser]=UNDEF
[browser:chrome]=[google]
[browser:firefox]=[mozilla]
[browser:ie]=[microsoft]
[server]=UNDEF
[server:ip]=[127.0.0.1]
[server:port]=[10010]
[testupper]=UNDEF
[testupper:upper]=[Upper]
[it:golang]=[google]
---------------------------------END-------------------------------
3、遍历、查找
// name: ini_iter.c
// date: 2018-08-02
#include
#include
#include "iniparser/iniparser.h"
void main(){
int num = 0;
char str[32] = {0};
dictionary *dict = NULL;
printf("---------------------------------load-------------------------------\r\n");
dict = iniparser_load("./test_parser.ini");
if(NULL == dict){
printf("iniparser load ini file failed, please check it...\r\n");
exit(0);
}
iniparser_dump(dict, stdout);
printf("---------------------------------iter-------------------------------\r\n");
num = iniparser_getnsec(dict);
if(-1 == num){
printf("iniparser getnsec failed...\r\n");
}else{
printf("section num: %d\r\n", num);
}
sprintf(str, "%s", iniparser_getsecname(dict, num-1));
printf("the %d section name: %s\r\n", num, str);
// 注意：尽量不要在ini中使用大写命名，设置或者取出的字符串全部小写化处理，不能继续使用大写做比较
if(!strcmp(str, "testupper")){
printf("compare with testupper.\r\n");
}
if(!strcmp(str, "testUpper")){
printf("compare with testUpper.\r\n");
}
num = iniparser_getsecnkeys(dict, str);
printf("num: %d\r\n", num);
const char *keys[32];
iniparser_getseckeys(dict, str, keys);
printf("key: %s\r\n", keys[0]);
printf("value: %s\r\n", iniparser_getstring(dict, keys[0], ""));
char tmp_str[32] = {0};
sprintf(tmp_str, "%s:%s", "server", "ip");
printf("value: %s\r\n", iniparser_getstring(dict, tmp_str, ""));
iniparser_freedict(dict);
printf("---------------------------------END-------------------------------\r\n");
}
# 编译
$ gcc ini_iter.c iniparser/*.c
# 结果
$ ./a.out
---------------------------------load-------------------------------
[it]=UNDEF
[it:macbook]=[apple]
[it:xiaomi]=[MI]
[it:golang]=[google]
[browser]=UNDEF
[browser:chrome]=[google]
[browser:firefox]=[mozilla]
[browser:ie]=[microsoft]
[server]=UNDEF
[server:ip]=[127.0.0.1]
[server:port]=[10010]
[testupper]=UNDEF
[testupper:upper]=[Upper]
---------------------------------iter-------------------------------
section num: 4
the 4 section name: testupper
compare with testupper.
num: 1
key: testupper:upper
value: Upper
value: 127.0.0.1
---------------------------------END-------------------------------
由于 iniparser 接口是 dictionary 的封装，以上已经基本涵盖所有接口用法。
三、 一些问题
详见 github issue页面
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版权声明：本文为CSDN博主「追火车」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/tmt123421/article/details/81369448
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