libopkg/nv_pair_list.c

   1 /* nv_pair_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 "includes.h"
  19
  20 #include "nv_pair.h"
  21 #include "void_list.h"
  22 #include "nv_pair_list.h"
  23 #include "libbb/libbb.h"
  24
  25 void nv_pair_list_init(nv_pair_list_t *list)
  26 {
  27     void_list_init((void_list_t *) list);
  28 }
  29
  30 void nv_pair_list_deinit(nv_pair_list_t *list)
  31 {
  32     nv_pair_list_elt_t *pos;
  33     nv_pair_t *nv_pair;
  34
  35     while(!void_list_empty(list)) {
  36         pos = nv_pair_list_pop(list);
  37         if (!pos)
  38             break;
  39         nv_pair =  (nv_pair_t *) pos->data;
  40         nv_pair_deinit(nv_pair);
  41         /* malloced in nv_pair_list_append */
  42         free(nv_pair);
  43         pos->data = NULL;
  44         free(pos);
  45     }
  46     void_list_deinit((void_list_t *) list);
  47 }
  48
  49 nv_pair_t *nv_pair_list_append(nv_pair_list_t *list, const char *name, const char *value)
  50 {
  51     /* freed in nv_pair_list_deinit */
  52     nv_pair_t *nv_pair = xcalloc(1, sizeof(nv_pair_t));
  53     nv_pair_init(nv_pair, name, value);
  54     void_list_append((void_list_t *) list, nv_pair);
  55
  56     return nv_pair;
  57 }
  58
  59 void nv_pair_list_push(nv_pair_list_t *list, nv_pair_t *data)
  60 {
  61     void_list_push((void_list_t *) list, data);
  62 }
  63
  64 nv_pair_list_elt_t *nv_pair_list_pop(nv_pair_list_t *list)
  65 {
  66     return (nv_pair_list_elt_t *) void_list_pop((void_list_t *) list);
  67 }
  68
  69 char *nv_pair_list_find(nv_pair_list_t *list, char *name)
  70 {
  71      nv_pair_list_elt_t *iter;
  72      nv_pair_t *nv_pair;
  73
  74      list_for_each_entry(iter, &list->head, node) {
  75           nv_pair = (nv_pair_t *)iter->data;
  76           if (strcmp(nv_pair->name, name) == 0) {
  77                return nv_pair->value;
  78           }
  79      }
  80      return NULL;
  81 }
  82
  83 nv_pair_list_elt_t *nv_pair_list_first(nv_pair_list_t *list) {
  84     return (nv_pair_list_elt_t * )void_list_first((void_list_t *) list);
  85 }
  86
  87 nv_pair_list_elt_t *nv_pair_list_prev(nv_pair_list_t *list, nv_pair_list_elt_t *node) {
  88     return (nv_pair_list_elt_t * )void_list_prev((void_list_t *) list, (void_list_elt_t *)node);
  89 }
  90
  91 nv_pair_list_elt_t *nv_pair_list_next(nv_pair_list_t *list, nv_pair_list_elt_t *node) {
  92     return (nv_pair_list_elt_t * )void_list_next((void_list_t *) list, (void_list_elt_t *)node);
  93 }
  94
  95 nv_pair_list_elt_t *nv_pair_list_last(nv_pair_list_t *list) {
  96     return (nv_pair_list_elt_t * )void_list_last((void_list_t *) list);
  97 }
  98
  99
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