C语言读取配置文件

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/*程序功能：获取配置文件中的IP字符串

程序目的：记录下来，免得以后重写了，不如意地方以后再改*/

#include <stdio.h>

#include <stdlib.h>

#include <malloc.h>

#include <string.h>

int etc_file(char *file,char *buffer);//读取配置文件

int cut_ip(char *,char **);//分割并获取对应IP地址

int main()

{

char *buffer;

char **p;

int i;

buffer = (char *)malloc(1000);

p = (char **)malloc(sizeof(char *)*20);

/*分配二维指针空间*/

for(i=0;i<20;i++)

{

p[i] = (char *)malloc(sizeof(char)*16);

if(p[i] == NULL)

{

printf("分配内存失败!\n");

exit(0);

}

char *file = "a.txt";

if(etc_file(file,buffer))

{

buffer[strlen(buffer) - 2] = 0;

printf("ip str = %s\n",buffer);

if(!cut_ip(buffer,p))

{

/*do something*/

}

/*释放指针内存*/

for(i = 19; i > 1; i--)

{

free(p[i]);

}

free(p);

free(buffer);

return 0;

}

int etc_file(char *file,char *buffer)

{

FILE *fd;

fd = fopen(file,"rb");

if(fd != NULL)

{

while(1)

{

if(fgets(buffer,1000,fd))

{

char *s;

if((s = strstr(buffer,"host")))

{

strcpy(buffer,s+6);

return 1;

}

else

break;

}

return 0;

}

int cut_ip(char * str,char **p)

{

int i = 0,count = 0;

while(*(str + i) != '\0')

{

int j = 0 ,len = 0;

while((*(str + i +j) != ',') && (*(str + i +j) != '\0'))

{

*(*p + len) = *(str + i + j);

len++;

j++;

}

*(*p + len) = 0;

printf("p[%d] = %s\n",++count,*p);

*p++;

i = i + j + 1;

if(*(str +i -1) == '\0')

break;

}

return 0;

}

a.txt内容如下：

name="chenqin","jian"

host="192.168.137.1,192.168.137.2,192.168.137.123,192.168.137.35"

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