/* * "$Id: attr.c,v 1.7 2005/01/03 19:29:45 mike Exp $" * *   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... */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... */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,v 1.7 2005/01/03 19:29:45 mike Exp $". */