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/*
* "$Id: attr.c 4785 2005-10-13 19:39:05Z mike $"
*
* PPD model-specific attribute routines for the Common UNIX Printing System
* (CUPS).
*
* Copyright 1997-2005 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Easy Software Products and are protected by Federal
* copyright law. Distribution and use rights are outlined in the file
* "LICENSE.txt" which should have been included with this file. If this
* file is missing or damaged please contact Easy Software Products
* at:
*
* Attn: CUPS Licensing Information
* Easy Software Products
* 44141 Airport View Drive, Suite 204
* Hollywood, Maryland 20636 USA
*
* Voice: (301) 373-9600
* EMail: cups-info@cups.org
* WWW: http://www.cups.org
*
* Contents:
*
* ppdFindAttr() - Find the first matching attribute...
* ppdFindNextAttr() - Find the next matching attribute...
*/
/*
* Include necessary headers...
*/
#include "ppd.h"
#include "debug.h"
#include "string.h"
#include <stdlib.h>
/*
* Private function...
*/
extern int _ppd_attr_compare(ppd_attr_t **a, ppd_attr_t **b);
/*
* 'ppdFindAttr()' - Find the first matching attribute...
*
* @since CUPS 1.1.19@
*/
ppd_attr_t * /* O - Attribute or NULL if not found */
ppdFindAttr(ppd_file_t *ppd, /* I - PPD file data */
const char *name, /* I - Attribute name */
const char *spec) /* I - Specifier string or NULL */
{
ppd_attr_t key, /* Search key */
*keyptr, /* Pointer to key */
**match; /* Matching attribute */
/*
* Range check input...
*/
if (ppd == NULL || name == NULL || ppd->num_attrs == 0)
return (NULL);
/*
* Do a binary search for a matching attribute...
*/
memset(&key, 0, sizeof(key));
strncpy(key.name, name, sizeof(key.name) - 1);
if (spec)
strncpy(key.spec, spec, sizeof(key.spec) - 1);
keyptr = &key;
match = bsearch(&keyptr, ppd->attrs, ppd->num_attrs, sizeof(ppd_attr_t *),
(int (*)(const void *, const void *))_ppd_attr_compare);
if (match == NULL)
{
/*
* No match!
*/
ppd->cur_attr = -1;
return (NULL);
}
if (match > ppd->attrs && spec == NULL)
{
/*
* Find the first attribute with the same name...
*/
while (match > ppd->attrs)
{
if (strcmp(match[-1]->name, name) != 0)
break;
match --;
}
}
/*
* Save the current attribute and return its value...
*/
ppd->cur_attr = match - ppd->attrs;
return (*match);
}
/*
* 'ppdFindNextAttr()' - Find the next matching attribute...
*
* @since CUPS 1.1.19@
*/
ppd_attr_t * /* O - Attribute or NULL if not found */
ppdFindNextAttr(ppd_file_t *ppd, /* I - PPD file data */
const char *name, /* I - Attribute name */
const char *spec) /* I - Specifier string or NULL */
{
ppd_attr_t **match; /* Matching attribute */
/*
* Range check input...
*/
if (ppd == NULL || name == NULL || ppd->num_attrs == 0 || ppd->cur_attr < 0)
return (NULL);
/*
* See if there are more attributes to return...
*/
ppd->cur_attr ++;
if (ppd->cur_attr >= ppd->num_attrs)
{
/*
* Nope...
*/
ppd->cur_attr = -1;
return (NULL);
}
/*
* Check the next attribute to see if it is a match...
*/
match = ppd->attrs + ppd->cur_attr;
if (strcmp((*match)->name, name) != 0 ||
(spec != NULL && strcmp((*match)->spec, spec) != 0))
{
/*
* Nope...
*/
ppd->cur_attr = -1;
return (NULL);
}
/*
* Return the next attribute's value...
*/
return (*match);
}
/*
* End of "$Id: attr.c 4785 2005-10-13 19:39:05Z mike $".
*/
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