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      1 /*	Id: strlist.h,v 1.3 2014/12/24 09:55:32 plunky Exp 	*/
      2 /*	$NetBSD: strlist.h,v 1.1.1.2 2016/02/09 20:28:56 plunky Exp $	*/
      3 
      4 /*-
      5  * Copyright (c) 2011 Joerg Sonnenberger <joerg (at) NetBSD.org>.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in
     16  *    the documentation and/or other materials provided with the
     17  *    distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     22  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
     23  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
     25  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     26  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     27  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     28  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     29  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  */
     32 
     33 #ifndef STRLIST_H
     34 #define STRLIST_H
     35 
     36 #include <stddef.h>
     37 #include <stdio.h>
     38 
     39 struct string {
     40 	struct string *next;
     41 	char *value;
     42 };
     43 
     44 struct strlist {
     45 	struct string *first;
     46 	struct string *last;
     47 };
     48 
     49 void strlist_init(struct strlist *);
     50 void strlist_free(struct strlist *);
     51 void strlist_make_array(const struct strlist *, char ***, size_t *);
     52 void strlist_print(const struct strlist *, FILE *, int);
     53 
     54 void strlist_prepend(struct strlist *, const char *);
     55 void strlist_prepend_nocopy(struct strlist *, char *);
     56 void strlist_prepend_list(struct strlist *, const struct strlist *);
     57 void strlist_append(struct strlist *, const char *);
     58 void strlist_append_nocopy(struct strlist *, char *);
     59 void strlist_append_list(struct strlist *, const struct strlist *);
     60 void strlist_append_array(struct strlist *, const char * const *);
     61 
     62 #define	STRLIST_FIRST(head)	((head)->first)
     63 #define	STRLIST_NEXT(elem)	((elem)->next)
     64 #define	STRLIST_FOREACH(var, head) \
     65 	for ((var) = STRLIST_FIRST(head); \
     66 	     (var) != NULL; \
     67 	     (var) = STRLIST_NEXT(var))
     68 #define	STRLIST_FOREACH_MUTABLE(var, head, var2) \
     69 	for ((var) = STRLIST_FIRST(head); \
     70 	     (var) != NULL && ((var2) = STRLIST_NEXT(var), 1); \
     71 	     (var) = (var2))
     72 #define	STRLIST_EMPTY(head)	(STRLIST_FIRST(head) == NULL)
     73 
     74 #endif /* STRLIST_H */
     75