wsutil/feature_list.c

   1 /* feature_list.c
   2  * Routines for gathering and handling lists of present/absent features
   3  *
   4  * Wireshark - Network traffic analyzer
   5  * By Gerald Combs <gerald@wireshark.org>
   6  * Copyright 1998 Gerald Combs
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include <stdbool.h>
  12
  13 #include "config.h"
  14
  15 #include <wsutil/feature_list.h>
  16
  17 void
  18 with_feature(feature_list l, const char *fmt, ...)
  19 {
  20     va_list arg;
  21     GString *msg = g_string_new("+");
  22     va_start(arg, fmt);
  23     g_string_append_vprintf(msg, fmt, arg);
  24     va_end(arg);
  25     *l = g_list_prepend(*l, g_string_free(msg, FALSE));
  26 }
  27
  28 void
  29 without_feature(feature_list l, const char *fmt, ...)
  30 {
  31     va_list arg;
  32     GString *msg = g_string_new("-");
  33     va_start(arg, fmt);
  34     g_string_append_vprintf(msg, fmt, arg);
  35     va_end(arg);
  36     *l = g_list_prepend(*l, g_string_free(msg, FALSE));
  37 }
  38
  39 static int
  40 feature_sort_alpha(const void *a, const void *b)
  41 {
  42     return g_ascii_strcasecmp((char *)a + 1, (char *)b + 1);
  43 }
  44
  45 void
  46 sort_features(feature_list l)
  47 {
  48     *l = g_list_sort(*l, feature_sort_alpha);
  49 }
  50
  51 void
  52 free_features(feature_list l)
  53 {
  54     g_list_free_full(*l, g_free);
  55     *l = NULL;
  56 }