inifile.c

自动侦测插入的存贮设备（U盘/移动硬盘等）

#define MEMO '#'

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

#include "inifile.h"

/*
功能:在str中是否存在substr
返回:substr第一次在str中出现的位置
*/
int instr(char *str,char *substr)
{
	int i,j;
	int sublen,flag;
	
	if(str==NULL||substr==NULL)
		return 0;

	sublen=strlen(substr);
	flag=0;
	for(i=0;i<=strlen(str)-sublen;i++)
	{
		for(j=0;j<sublen;j++)
		{
			if(*(str+i+j)!=*(substr+j))
				break;
		}
		if(j==sublen)
		{
			flag=1;
			break;
		}
	}

	if(!flag)
		i=-1;

	return i;
}

/*
功能:读取某个文件中某个变量的值
返回:成功1,失败0
*/
int readfield(char *filename,char *domain,char *fieldname,char *fieldvalue)
{
	FILE *fp;
	int len,flag;
	int i;
	char tmp[MAXLEN];
	char *p,*str,*p2;
	
	if((fp=fopen(filename,"r"))==NULL)
	{
		return 0;
	}
	
	flag=0;
	if(domain!=NULL)
	{
		while(!feof(fp))		/*Find domain*/
		{
			bzero(tmp,MAXLEN);
			fgets(tmp,MAXLEN,fp);
			sprintf(tmp,"%s",trim(tmp));
			if(tmp[0]!='[')
				continue;
			i=instr(tmp,"]");
			if(i>=0)
				*(tmp+i)='\0';
			else
				continue;

			if(strcmp(domain,tmp+1)==0)
				break;
		}

		if(feof(fp))
		{
			fclose(fp);
			return 0;
		}
		flag=1;				/*Find var in domain*/
	}

	while(!feof(fp))			/*Find variable's value*/
	{
		bzero(tmp,MAXLEN);
		fgets(tmp,MAXLEN,fp);
		sprintf(tmp,"%s",trim(tmp));
		if(tmp[0]==MEMO||strlen(tmp)<1)
			continue;
		if(tmp[0]=='['&&flag)
			break;
		for(p=tmp;*p!='\0'&&*p!='#'&&*p!='=';p++);
		if(*p!='=')
			continue;
		*p='\0';
		p++;
		sprintf(tmp,"%s",trim(tmp));
		if(strcmp(tmp,fieldname)!=0)
			continue;
		str=p;
		for(;*p!='\0'&&*p!='#'&&*p!='\r'&&*p!='\n';p++);
		*p='\0';
		sprintf(fieldvalue,"%s",trim(str));
		fclose(fp);
		return 1;
	}
	fclose(fp);
	return 0;
}

/*
功能:得到所有域名的列表
返回:成功1,失败0
*/
int getalldomain(char *filename,struct domain *head)
{
	FILE *fp;
	struct domain *p;
	char tmp[MAXLEN];
	int i;

	if((fp=fopen(filename,"r"))==NULL)
		return 0;

	p=head;
	bzero(p->dname,MAXLEN);

	while(!feof(fp))
	{
		bzero(tmp,MAXLEN);
		fgets(tmp,MAXLEN,fp);
		sprintf(tmp,"%s",trim(tmp));
		if(tmp[0]!='[')
			continue;
		i=instr(tmp,"]");

		if(i>=0)
			*(tmp+i)='\0';
		else
			continue;
		p->next=(struct domain *)malloc(sizeof(struct domain));
		p=p->next;
		bzero(p->dname,MAXLEN);
		sprintf(p->dname,"%s\0",tmp+1);
	}
	p->next=NULL;
	fclose(fp);
	return 1;
}

/*
功能:得到某个域中所有的变量列表
返回:成功1,失败0
*/
int getallvar(char *filename,char *domain,struct variable *head)
{
	FILE *fp;
	struct variable *p;
	char tmp[MAXLEN];
	char *ch;
	int flag;
	int i;
	
	if((fp=fopen(filename,"r"))==NULL)
		return 0;

	flag=0;
	p=head;
	bzero(p->val.vname,MAXLEN);
	bzero(p->val.vval,MAXLEN);

	if(domain!=NULL)
	{
		while(!feof(fp))		/*Find domain*/
		{
			bzero(tmp,MAXLEN);
			fgets(tmp,MAXLEN,fp);
			sprintf(tmp,"%s",trim(tmp));
			if(tmp[0]!='[')
				continue;

			i=instr(tmp,"]");
			if(i>=0)
				*(tmp+i)='\0';
			else
				continue;

			if(strcmp(domain,tmp+1)==0)
				break;
		}
		if(feof(fp))
		{
			fclose(fp);
			return 0;
		}
		flag=1;				/*Find var in domain*/
	}
	
	while(!feof(fp))			/*Find variable's value*/
	{
		bzero(tmp,MAXLEN);
		fgets(tmp,MAXLEN,fp);
		sprintf(tmp,"%s",trim(tmp));
		if(tmp[0]==MEMO||strlen(tmp)<1)
			continue;
		if(tmp[0]=='['&&flag)
			break;

		i=instr(tmp,"=");
		if(i>0)
		{
			ch=tmp+i;
			*ch='\0';
			ch++;
		}
		else
			continue;
		p->next=(struct variable *)malloc(sizeof(struct variable));
		p=p->next;
		bzero(p->val.vname,MAXLEN);
		bzero(p->val.vval,MAXLEN);
		sprintf(p->val.vname,"%s\0",tmp);

		i=instr(ch,"#");
		if(i>=0)
			*(ch+i)='\0';
		sprintf(p->val.vval,"%s\0",ch);
	}
	fclose(fp);
	p->next=NULL;
	return 1;
}