epan/ex-opt.c

   1 /*
   2  *  ex-opt.c
   3  *
   4  * Extension command line options
   5  *
   6  * (c) 2006, Luis E. Garcia Ontanon <luis@ontanon.org>
   7  *
   8  * $Id$
   9  *
  10  * Wireshark - Network traffic analyzer
  11  * By Gerald Combs <gerald@wireshark.org>
  12  * Copyright 1998 Gerald Combs
  13  *
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  27  */
  28
  29 #include "config.h"
  30
  31 #include <glib.h>
  32 #include "ex-opt.h"
  33
  34 static GHashTable* ex_opts = NULL;
  35
  36 gboolean ex_opt_add(const gchar* optarg) {
  37     gchar** splitted;
  38
  39     if (!ex_opts)
  40         ex_opts = g_hash_table_new(g_str_hash,g_str_equal);
  41
  42     splitted = g_strsplit(optarg,":",2);
  43
  44     if (splitted[0] && splitted[1]) {
  45         GPtrArray* this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,splitted[0]);
  46
  47         if (this_opts) {
  48             g_ptr_array_add(this_opts,splitted[1]);
  49             g_free(splitted[0]);
  50         } else {
  51             this_opts = g_ptr_array_new();
  52             g_ptr_array_add(this_opts,splitted[1]);
  53             g_hash_table_insert(ex_opts,splitted[0],this_opts);
  54         }
  55
  56         g_free(splitted);
  57
  58         return TRUE;
  59     } else {
  60         g_strfreev(splitted);
  61         return FALSE;
  62     }
  63 }
  64
  65 gint ex_opt_count(const gchar* key) {
  66     GPtrArray* this_opts;
  67
  68     if (! ex_opts)
  69         return 0;
  70
  71     this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,key);
  72
  73     if (this_opts) {
  74         return this_opts->len;
  75     } else {
  76         return 0;
  77     }
  78 }
  79
  80 const gchar* ex_opt_get_nth(const gchar* key, guint index) {
  81     GPtrArray* this_opts;
  82
  83     if (! ex_opts)
  84         return 0;
  85
  86     this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,key);
  87
  88     if (this_opts) {
  89         if (this_opts->len > index) {
  90             return (const gchar *)g_ptr_array_index(this_opts,index);
  91         } else {
  92             /* XXX: assert? */
  93             return NULL;
  94         }
  95     } else {
  96         return NULL;
  97     }
  98
  99 }
 100
 101 extern const gchar* ex_opt_get_next(const gchar* key) {
 102     GPtrArray* this_opts;
 103
 104     if (! ex_opts)
 105         return 0;
 106
 107     this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,key);
 108
 109     if (this_opts) {
 110         if (this_opts->len)
 111             return (const gchar *)g_ptr_array_remove_index(this_opts,0);
 112         else
 113             return NULL;
 114     } else {
 115         return NULL;
 116     }
 117 }
 118