用C语言读取INI文件，怎么实现

[cnlaojie]

请问如何在UNIX环境下用标准C来读取INI文件？那位高手可以给出例子，小弟谢谢了！

[jixingzhong]

读取INI文件的函数(C语言)


/*
* File: inifile.h
* Read INI File
*/
#ifndef _INIFILE_H_
#define _INIFILE_H_

#include
#include

/*
* char* GetInitKey(FileName, Section, Key)
* Return Key=>Value
* Ex:
*
* + [config]
* + dbhost=localhost
*
* strcpy(dbhost,GetInitKey("config.ini", "config", "dbhost"));
*/
char * GetInitKey(char *filename, char *title,char *key)
{
FILE * fp;
char tmpLine[1024];
int rtnval;
int i = 0;
int flag = 0;
char * tmp;
static char tmpstr[1024];

if ((fp = fopen( filename, "r")) == NULL )
{
return "have no such file";
}
while (!feof(fp))
{
rtnval = fgetc( fp );
if ( rtnval == EOF )
{
break;
}
else
{
tmpLine[i++] = rtnval;
}
if ( rtnval == '\n')
{
tmpLine[--i]=0;
i = 0;
tmp = strchr(tmpLine, '=');

if (( tmp != NULL )&&(flag == 1))
{
if (strstr(tmpLine,key)!=NULL)
{
strcpy ( tmpstr, tmp + 1 );
fclose ( fp );
return tmpstr;
}
}
else
{
strcpy(tmpstr,"[");
strcat(tmpstr,title);
strcat(tmpstr,"]");
if (strcmp(tmpstr,tmpLine)==0)
{
flag = 1;
}
}

}
}
fclose ( fp );
return "";
}
#endif //_INIFILE_H_

使用方法:

char dbhost[20];
strcpy(dbhost,GetInitKey("config.ini", "config", "dbhost"));

ini文件内容

[config]
dbhost=localhost

[cnlaojie]

谢谢jixingzhong(瞌睡虫·星辰)，我是下面这样写得，但是出错了，错误信息是：
UX:acomp: ERROR: "laojie_test.c", line 37: identifier redeclared: GetInitKey

请指教！

#include "stdio.h"

main()
{
char YCQH[20];
strcpy(YCQH,GetInitKey("gameconfig.ini", "config", "YCQH"));
}

char * GetInitKey(char *filename, char *title,char *key)
{
FILE * fp;
char tmpLine[1024];
int rtnval;
int i = 0;
int flag = 0;
char * tmp;
static char tmpstr[1024];

if ((fp = fopen( filename, "r")) == NULL )
{
return "have no such file";
}
while (!feof(fp))
{
rtnval = fgetc( fp );
if ( rtnval == EOF )
{
break;
}
else
{
tmpLine[i++] = rtnval;
}
if ( rtnval == '\n')
{
tmpLine[--i]=0;
i=0;
tmp = strchr(tmpLine, '=');

if (( tmp != NULL )&&(flag == 1))
{
if (strstr(tmpLine,key)!=NULL)
{
strcpy ( tmpstr, tmp + 1 );
fclose ( fp );
return tmpstr;
}
}
else
{
strcpy(tmpstr,"[");
strcat(tmpstr,title);
strcat(tmpstr,"]");
if (strcmp(tmpstr,tmpLine)==0)
{
flag = 1;
}
}

}
}
fclose ( fp );
return "";
}

[iu_81]

#include "stdio.h"

char * GetInitKey(char *filename, char *title,char *key)
{
FILE * fp;
char tmpLine[1024];
int rtnval;
int i = 0;
int flag = 0;
char * tmp;
static char tmpstr[1024];

if ((fp = fopen( filename, "r")) == NULL )
{
return "have no such file";
}
while (!feof(fp))
{
rtnval = fgetc( fp );
if ( rtnval == EOF )
{
break;
}
else
{
tmpLine[i++] = rtnval;
}
if ( rtnval == '\n')
{
tmpLine[--i]=0;
i=0;
tmp = strchr(tmpLine, '=');

if (( tmp != NULL )&&(flag == 1))
{
if (strstr(tmpLine,key)!=NULL)
{
strcpy ( tmpstr, tmp + 1 );
fclose ( fp );
return tmpstr;
}
}
else
{
strcpy(tmpstr,"[");
strcat(tmpstr,title);
strcat(tmpstr,"]");
if (strcmp(tmpstr,tmpLine)==0)
{
flag = 1;
}
}

}
}
fclose ( fp );
return "";
}

main()
{
char YCQH[20];
strcpy(YCQH,GetInitKey("gameconfig.ini", "config", "YCQH"));
}

[iu_81]

添加#include "string.h"

[cnlaojie]

我怎么编译通过以后，执行。没有出来值呢？什么也没有，也没有错误。

#include "stdio.h"

char * GetInitKey(char *filename, char *title,char *key)
{
FILE * fp;
char tmpLine[1024];
int rtnval;
int i = 0;
int flag = 0;
char * tmp;
static char tmpstr[1024];

if ((fp = fopen( filename, "r")) == NULL )
{
return "have no such file";
}
while (!feof(fp))
{
rtnval = fgetc( fp );
if ( rtnval == EOF )
{
break;
}
else
{
tmpLine[i++] = rtnval;
}
if ( rtnval == '\n')
{
tmpLine[--i]=0;
i=0;
tmp = strchr(tmpLine, '=');

if (( tmp != NULL )&&(flag == 1))
{
if (strstr(tmpLine,key)!=NULL)
{
strcpy ( tmpstr, tmp + 1 );
fclose ( fp );
return tmpstr;
}
}
else
{
strcpy(tmpstr,"[");
strcat(tmpstr,title);
strcat(tmpstr,"]");
if (strcmp(tmpstr,tmpLine)==0)
{
flag = 1;
}
}

}
}
fclose ( fp );
return "";
}

main()
{
char YCQH[20];
strcpy(YCQH,GetInitKey("gameconfig.INI", "GmaesAmount", "YCQH"));
printf(YCQH);
}

配置文件：
[GmaesAmount]
YCMS=15
YCQH=sss
YCQT=10
YCJW=5

[cnlaojie]

有人知道么，在线等

[祝云飞]

执行完后结果是sss
加上头文件string.h试试

[cnlaojie]

我加了头文件，VC下是可以，我是在UNIX下。

[cnlaojie]

我测试了
if (( tmp != NULL )&&(flag == 1))
{
if (strstr(tmpLine,key)!=NULL)
{
strcpy ( tmpstr, tmp + 1 );
fclose ( fp );
}
}
这里没有执行丫！

[cnlaojie]

问题解决了，UNXIN下应该这么写：



#include "stdio.h"
#include "string.h"

static char tmpstr[1024];
char * GetInitKey(char *filename, char *title,char *key)
{
FILE * fp;
char tmpLine[1024];
int rtnval;
int i = 0;
int flag = 0;
char * tmp;
//static char tmpstr[1024];
char ch;

if ((fp = fopen( filename, "rb")) == NULL )
{
return "have no such file";
}
while (!feof(fp))
{
rtnval = fgetc( fp );
if ( rtnval == EOF )
{
break;
}
else
{
tmpLine[i++] = rtnval;

}
if ( rtnval == '\n')
{
tmpLine[--i]=0;
i=0;
tmp = strchr(tmpLine, '=');

if (( tmp != NULL )&&(flag == 1))
{

if (strstr(tmpLine,key)!=NULL)
{
strcpy ( tmpstr, tmp + 1 );

fclose ( fp );
return tmpstr;
}
}
else
{
strcpy(tmpstr,"[");
strcat(tmpstr,title);
strcat(tmpstr,"]");
if (strcmp(tmpstr,tmpLine)==0)
{
flag = 1;
}
}
}

}
fclose ( fp );
}

main()
{
char YCQH[20];

strcpy(YCQH,GetInitKey("gameconfig.ini", "Amount", "YCQH"));
printf(YCQH);
}