lib/glibcompat.c

   1 /*
   2    GLIB - Library of useful routines for C programming
   3
   4    Copyright (C) 2009-2015
   5    Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2009, 2013.
   9
  10    This file is part of the Midnight Commander.
  11
  12    The Midnight Commander is free software: you can redistribute it
  13    and/or modify it under the terms of the GNU General Public License as
  14    published by the Free Software Foundation, either version 3 of the License,
  15    or (at your option) any later version.
  16
  17    The Midnight Commander is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26 /** \file glibcompat.c
  27  *  \brief Source: compatibility with older versions of glib
  28  *
  29  *  Following code was copied from glib to GNU Midnight Commander to
  30  *  provide compatibility with older versions of glib.
  31  */
  32
  33 #include <config.h>
  34 #include <string.h>
  35
  36 #include "global.h"
  37 #include "glibcompat.h"
  38
  39 /*** global variables ****************************************************************************/
  40
  41 /*** file scope macro definitions ****************************************************************/
  42
  43 /*** file scope type declarations ****************************************************************/
  44
  45 /*** file scope variables ************************************************************************/
  46
  47 /*** file scope functions ************************************************************************/
  48
  49 /*** public functions ****************************************************************************/
  50 /* --------------------------------------------------------------------------------------------- */
  51
  52 #if ! GLIB_CHECK_VERSION (2, 16, 0)
  53 /**
  54  * g_strcmp0:
  55  * @str1: (allow-none): a C string or %NULL
  56  * @str2: (allow-none): another C string or %NULL
  57  *
  58  * Compares @str1 and @str2 like strcmp(). Handles %NULL
  59  * gracefully by sorting it before non-%NULL strings.
  60  * Comparing two %NULL pointers returns 0.
  61  *
  62  * Returns: an integer less than, equal to, or greater than zero, if @str1 is <, == or > than @str2.
  63  *
  64  * Since: 2.16
  65  */
  66 int
  67 g_strcmp0 (const char *str1, const char *str2)
  68 {
  69     if (!str1)
  70         return -(str1 != str2);
  71     if (!str2)
  72         return str1 != str2;
  73     return strcmp (str1, str2);
  74 }
  75 #endif /* ! GLIB_CHECK_VERSION (2, 16, 0) */
  76
  77 /* --------------------------------------------------------------------------------------------- */
  78
  79 #if ! GLIB_CHECK_VERSION (2, 28, 0)
  80 /**
  81  * g_slist_free_full:
  82  * @list: a pointer to a #GSList
  83  * @free_func: the function to be called to free each element's data
  84  *
  85  * Convenience method, which frees all the memory used by a #GSList, and
  86  * calls the specified destroy function on every element's data.
  87  *
  88  * Since: 2.28
  89  **/
  90 void
  91 g_slist_free_full (GSList * list, GDestroyNotify free_func)
  92 {
  93     g_slist_foreach (list, (GFunc) free_func, NULL);
  94     g_slist_free (list);
  95 }
  96
  97 /* --------------------------------------------------------------------------------------------- */
  98
  99 /**
 100  * g_list_free_full:
 101  * @list: a pointer to a #GList
 102  * @free_func: the function to be called to free each element's data
 103  *
 104  * Convenience method, which frees all the memory used by a #GList, and
 105  * calls the specified destroy function on every element's data.
 106  *
 107  * Since: 2.28
 108  */
 109 void
 110 g_list_free_full (GList * list, GDestroyNotify free_func)
 111 {
 112     g_list_foreach (list, (GFunc) free_func, NULL);
 113     g_list_free (list);
 114 }
 115
 116 #endif /* ! GLIB_CHECK_VERSION (2, 28, 0) */
 117
 118 /* --------------------------------------------------------------------------------------------- */
 119 #if ! GLIB_CHECK_VERSION (2, 22, 0)
 120 /**
 121  * Creates a new GError with the given domain and code, and a message formatted with format.
 122  * @param domain error domain
 123  * @param code error code
 124  * @param format printf()-style format for error message
 125  * @param args va_list of parameters for the message format
 126  * @returns a new GError
 127  */
 128
 129 GError *
 130 g_error_new_valist (GQuark domain, gint code, const gchar * format, va_list args)
 131 {
 132     char *message;
 133     GError *ret_value;
 134
 135     message = g_strdup_vprintf (format, args);
 136
 137     ret_value = g_error_new_literal (domain, code, message);
 138     g_free (message);
 139
 140     return ret_value;
 141 }
 142
 143 #endif /* ! GLIB_CHECK_VERSION (2, 22, 0) */
 144
 145 /* --------------------------------------------------------------------------------------------- */