sscanf.c

在某些嵌入式系统里没有sscanf库函数

unsigned long CGI_tool_sscanf(unsigned char *srcString,unsigned char *example,unsigned long *parameters,unsigned long pNum)
{
 unsigned long i1=0,i2=0,i3=0;
 unsigned char pt=0;
 unsigned char recordFlag=0;
 unsigned char recordBuf[100];
 unsigned long i4=0;
 if((srcString==NULL)||(example==NULL))
  return -1;
 for(i1=0,i2=0;srcString[i1]!='\0';i1++)
 {
  if(recordFlag)
  {
   if(srcString[i1]==example[i2])
   {
    
    recordFlag=0;
    recordBuf[i3]='\0';
    i2++;
    if(i4>=pNum) return -1;
    switch(pt)
    {
     case 0:
      parameters[i4]=atoi((char *)recordBuf);
     
      break;
     case 1:
      
      break;
    }
    i4++;
    
   }
   else
   {
    recordBuf[i3]=srcString[i1];
    i3++;
   }
   
 
  }
  else
  {
   if(srcString[i1]!=example[i2])
   {
    if(example[i2]=='%')
    {
     i2++;
     if(example[i2]=='\0') return -1;
     switch(example[i2])
     {
      case 'd':
       pt=0;
       break;
      case 'c':
       pt=1;
       break;
      default:return -1;
     }
     i2++;
     recordFlag=1;
     i3=0;
     recordBuf[i3]=srcString[i1];
     i3++;
    }
    else
     return -1;
   }
   else
    i2++;
  }
 }
 return 0;
}