Function cgiFormEncode

cgi-bin/html.c:68–139

 */

char *					/* O - Destination string */
cgiFormEncode(char       *dst,		/* I - Destination string */
              const char *src,		/* I - Source string */
	      size_t     dstsize)	/* I - Size of destination string */
{
  char			*dstptr,	/* Pointer into destination */
			*dstend;	/* End of destination */
  static const char	*hex =		/* Hexadecimal characters */
			"0123456789ABCDEF";


 /*
  * Mark the end of the string...
  */

  dstend = dst + dstsize - 1;

 /*
  * Loop through the source string and copy...
  */

  for (dstptr = dst; *src && dstptr < dstend;)
  {
    switch (*src)
    {
      case ' ' :
         /*
	  * Encode spaces with a "+"...
	  */

          *dstptr++ = '+';
	  src ++;
	  break;

      case '&' :
      case '%' :
      case '+' :
         /*
	  * Encode special characters with %XX escape...
	  */

          if (dstptr < (dstend - 2))
	  {
	    *dstptr++ = '%';
	    *dstptr++ = hex[(*src & 255) >> 4];
	    *dstptr++ = hex[*src & 15];
	    src ++;
	  }
          break;

      default :
         /*
	  * Copy other characters literally...
	  */

          *dstptr++ = *src++;
	  break;
    }