/* * "$Id: attr.c,v 1.1.1.2 2003/03/04 19:06:18 jlovell Exp $" * * PPD model-specific attribute routines for the Common UNIX Printing System * (CUPS). * * Copyright 1997-2003 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 20636-3111 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 1.1.1.2 2003/03/04 19:06:18 jlovell Exp $". */