libopkg/str_list.c

   1 /* str_list.c - the opkg package management system
   2
   3    Carl D. Worth
   4
   5    Copyright (C) 2001 University of Southern California
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include "str_list.h"
  19 #include "libbb/libbb.h"
  20
  21 void str_list_elt_init(str_list_elt_t * elt, char *data)
  22 {
  23         void_list_elt_init((void_list_elt_t *) elt, data);
  24 }
  25
  26 void str_list_elt_deinit(str_list_elt_t * elt)
  27 {
  28         if (elt->data)
  29                 free(elt->data);
  30         void_list_elt_deinit((void_list_elt_t *) elt);
  31 }
  32
  33 str_list_t *str_list_alloc()
  34 {
  35         str_list_t *list = xcalloc(1, sizeof(str_list_t));
  36         str_list_init(list);
  37         return list;
  38 }
  39
  40 void str_list_init(str_list_t * list)
  41 {
  42         void_list_init((void_list_t *) list);
  43 }
  44
  45 void str_list_deinit(str_list_t * list)
  46 {
  47         str_list_elt_t *elt;
  48         while (!void_list_empty(list)) {
  49                 elt = str_list_first(list);
  50                 if (!elt)
  51                         return;
  52                 list_del_init(&elt->node);
  53                 free(elt->data);
  54                 elt->data = NULL;
  55                 free(elt);
  56         }
  57 }
  58
  59 void str_list_append(str_list_t * list, char *data)
  60 {
  61         void_list_append((void_list_t *) list, xstrdup(data));
  62 }
  63
  64 str_list_elt_t *str_list_pop(str_list_t * list)
  65 {
  66         return (str_list_elt_t *) void_list_pop((void_list_t *) list);
  67 }
  68
  69 void str_list_remove(str_list_t * list, str_list_elt_t ** iter)
  70 {
  71         char *str = void_list_remove((void_list_t *) list,
  72                                      (void_list_elt_t **) iter);
  73
  74         if (str)
  75                 free(str);
  76 }
  77
  78 void str_list_remove_elt(str_list_t * list, const char *target_str)
  79 {
  80         char *str = void_list_remove_elt((void_list_t *) list,
  81                                          (void *)target_str,
  82                                          (void_list_cmp_t) strcmp);
  83         if (str)
  84                 free(str);
  85 }
  86
  87 str_list_elt_t *str_list_first(str_list_t * list)
  88 {
  89         return (str_list_elt_t *) void_list_first((void_list_t *) list);
  90 }
  91
  92 str_list_elt_t *str_list_next(str_list_t * list, str_list_elt_t * node)
  93 {
  94         return (str_list_elt_t *) void_list_next((void_list_t *) list,
  95                                                  (void_list_elt_t *) node);
  96 }
  97
  98 void str_list_purge(str_list_t * list)
  99 {
 100         str_list_deinit(list);
 101         free(list);
 102 }