g10/helptext.c

   1 /* helptext.c  - English help texts
   2  * Copyright (C) 1998, 1999, 2000, 2001, 2002,
   3  *               2004, 2007 Free Software Foundation, Inc.
   4  *
   5  * This file is part of GnuPG.
   6  *
   7  * GnuPG is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * GnuPG is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "gpg.h"
  27 #include "util.h"
  28 #include "ttyio.h"
  29 #include "main.h"
  30 #include "i18n.h"
  31
  32
  33
  34
  35 /* Helper to get the help through the configurable GnuPG help
  36    system.  */
  37 static char *
  38 get_help_from_file (const char *keyword)
  39 {
  40   char *key, *result;
  41
  42   key = xtrymalloc (4 + strlen (keyword) + 1);
  43   if (key)
  44     {
  45       strcpy (stpcpy (key, "gpg."), keyword);
  46       result = gnupg_get_help_string (key, 0);
  47       xfree (key);
  48       if (result && !is_native_utf8 ())
  49         {
  50           char *tmp = utf8_to_native (result, strlen (result), -1);
  51           if (tmp)
  52             {
  53               xfree (result);
  54               result = tmp;
  55             }
  56         }
  57     }
  58   else
  59     result = NULL;
  60   return result;
  61 }
  62
  63
  64 void
  65 display_online_help( const char *keyword )
  66 {
  67   char *result;
  68   int need_final_lf = 1;
  69
  70   tty_kill_prompt();
  71   if ( !keyword )
  72     tty_printf (_("No help available") );
  73   else if ( (result = get_help_from_file (keyword)) )
  74     {
  75       tty_printf ("%s", result);
  76       if (*result && result[strlen (result)-1] == '\n')
  77         need_final_lf = 0;
  78       xfree (result);
  79     }
  80   else
  81     {
  82       tty_printf (_("No help available for `%s'"), keyword );
  83     }
  84   if (need_final_lf)
  85     tty_printf("\n");
  86 }
  87
  88