VC++ 自定义函数库

最新推荐文章于 2022-03-28 13:48:27 发布

原创最新推荐文章于 2022-03-28 13:48:27 发布 · 1.1k 阅读

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//从文件中取出相应=号后面的值 2配置文件不存在 0 无记录
int CICCardDlg::GetSignBuff(char *cSignBuff,char *cReturnBuffer,char *cFilePathName)
{
FILE *f;
f = fopen(cFilePathName,"r");

if(f==NULL)
{
return 2;
}
char cReadbuff[256];
char cSecondBuff[200];
char *cc="=";
memset(cReadbuff,0,sizeof(cReadbuff));
fseek(f,0,SEEK_SET);

while(fgets(cReadbuff,256,f) != NULL)
{
  memset(cSecondBuff,0,sizeof(cSecondBuff));
  char *buf =strstr(cReadbuff,cc);
  int iSecondLenth = buf - cReadbuff;
  int iSumLenth = strlen(cReadbuff);
  strncpy(cSecondBuff,cReadbuff,iSecondLenth);
  if(strcmp(cSecondBuff,cSignBuff) ==0)
  {
   memset(cReturnBuffer,0,sizeof(cReturnBuffer));
   int iGetLenth = iSumLenth-iSecondLenth -1;
   memcpy(cReturnBuffer,cReadbuff+iSecondLenth+1,iGetLenth);

   fclose(f);
   return 1;
  }
  if(fgetc(f)==EOF)
  {
   break;
  }
  fseek(f,-1,SEEK_CUR);
}

fclose(f);
return 0;
}