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  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 #include "config.h"
  16
  17 #include <glib.h>
  18 #include "ex-opt.h"
  19
  20 static GHashTable* ex_opts;
  21
  22 bool ex_opt_add(const char* ws_optarg) {
  23     char** splitted;
  24
  25     if (!ex_opts)
  26         ex_opts = g_hash_table_new(g_str_hash,g_str_equal);
  27
  28     splitted = g_strsplit(ws_optarg,":",2);
  29
  30     if (splitted[0] && splitted[1]) {
  31         GPtrArray* this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,splitted[0]);
  32
  33         if (this_opts) {
  34             g_ptr_array_add(this_opts,splitted[1]);
  35             g_free(splitted[0]);
  36         } else {
  37             this_opts = g_ptr_array_new();
  38             g_ptr_array_add(this_opts,splitted[1]);
  39             g_hash_table_insert(ex_opts,splitted[0],this_opts);
  40         }
  41
  42         g_free(splitted);
  43
  44         return true;
  45     } else {
  46         g_strfreev(splitted);
  47         return false;
  48     }
  49 }
  50
  51 int ex_opt_count(const char* key) {
  52     GPtrArray* this_opts;
  53
  54     if (! ex_opts)
  55         return 0;
  56
  57     this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,key);
  58
  59     if (this_opts) {
  60         return this_opts->len;
  61     } else {
  62         return 0;
  63     }
  64 }
  65
  66 const char* ex_opt_get_nth(const char* key, unsigned key_index) {
  67     GPtrArray* this_opts;
  68
  69     if (! ex_opts)
  70         return 0;
  71
  72     this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,key);
  73
  74     if (this_opts) {
  75         if (this_opts->len > key_index) {
  76             return (const char *)g_ptr_array_index(this_opts,key_index);
  77         } else {
  78             /* XXX: assert? */
  79             return NULL;
  80         }
  81     } else {
  82         return NULL;
  83     }
  84
  85 }
  86
  87 extern const char* ex_opt_get_next(const char* key) {
  88     GPtrArray* this_opts;
  89
  90     if (! ex_opts)
  91         return 0;
  92
  93     this_opts = (GPtrArray *)g_hash_table_lookup(ex_opts,key);
  94
  95     if (this_opts) {
  96         if (this_opts->len)
  97             return (const char *)g_ptr_array_remove_index(this_opts,0);
  98         else
  99             return NULL;
 100     } else {
 101         return NULL;
 102     }
 103 }
 104
 105 /*
 106  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 107  *
 108  * Local variables:
 109  * c-basic-offset: 4
 110  * tab-width: 8
 111  * indent-tabs-mode: nil
 112  * End:
 113  *
 114  * vi: set shiftwidth=4 tabstop=8 expandtab:
 115  * :indentSize=4:tabSize=8:noTabs=true:
 116  */