Function _cupsEncodeOption

cups/encode.c:388–689

 */

ipp_attribute_t *			/* O - New attribute or @code NULL@ on error */
_cupsEncodeOption(
    ipp_t         *ipp,			/* I - IPP request/response/collection */
    ipp_tag_t     group_tag,		/* I - Group tag */
    _ipp_option_t *map,			/* I - Option mapping, if any */
    const char    *name,		/* I - Attribute name */
    const char    *value,		/* I - Value */
    int           depth)		/* I - Depth of values */
{
  int			i,		/* Looping var */
			count;		/* Number of values */
  char			*s,		/* Pointer into option value */
			*val,		/* Pointer to option value */
			*copy,		/* Copy of option value */
			*sep,		/* Option separator */
			quote;		/* Quote character */
  ipp_attribute_t	*attr;		/* IPP attribute */
  ipp_tag_t		value_tag;	/* IPP value tag */
  ipp_t			*collection;	/* Collection value */
  int			num_cols;	/* Number of collection values */
  cups_option_t		*cols;		/* Collection values */


  DEBUG_printf(("_cupsEncodeOption(ipp=%p(%s), group=%s, map=%p, name=\"%s\", value=\"%s\")", (void *)ipp, ipp ? ippOpString(ippGetOperation(ipp)) : "", ippTagString(group_tag), (void *)map, name, value));

 /*
  * Figure out the attribute syntax for encoding...
  */

  if (!map)
    map = _ippFindOption(name);

  if (map)
    value_tag = map->value_tag;
  else if (!_cups_strcasecmp(value, "true") || !_cups_strcasecmp(value, "false"))
    value_tag = IPP_TAG_BOOLEAN;
  else if (value[0] == '{')
    value_tag = IPP_TAG_BEGIN_COLLECTION;
  else
    value_tag = IPP_TAG_NAME;

 /*
  * Count the number of values...
  */

  if (map && map->multivalue)
  {
    for (count = 1, sep = (char *)value, quote = 0; *sep; sep ++)
    {
      if (*sep == quote)
	quote = 0;
      else if (!quote && (*sep == '\'' || *sep == '\"'))
      {
       /*
	* Skip quoted option value...
	*/

	quote = *sep;