1/* Message translation utilities.
2   Copyright (C) 2001-2015 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3.  If not see
18<http://www.gnu.org/licenses/>.  */
19
20#include "config.h"
21#include "system.h"
22#include "coretypes.h"
23#include "intl.h"
24
25#ifdef HAVE_LANGINFO_CODESET
26#include <langinfo.h>
27#endif
28
29/* Opening quotation mark for diagnostics.  */
30const char *open_quote = "'";
31
32/* Closing quotation mark for diagnostics.  */
33const char *close_quote = "'";
34
35/* The name of the locale encoding.  */
36const char *locale_encoding = NULL;
37
38/* Whether the locale is using UTF-8.  */
39bool locale_utf8 = false;
40
41#ifdef ENABLE_NLS
42
43/* Initialize the translation library for GCC.  This performs the
44   appropriate sequence of calls - setlocale, bindtextdomain,
45   textdomain.  LC_CTYPE determines the character set used by the
46   terminal, so it has be set to output messages correctly.  */
47
48void
49gcc_init_libintl (void)
50{
51#ifdef HAVE_LC_MESSAGES
52  setlocale (LC_CTYPE, "");
53  setlocale (LC_MESSAGES, "");
54#else
55  setlocale (LC_ALL, "");
56#endif
57
58  (void) bindtextdomain ("gcc", LOCALEDIR);
59  (void) textdomain ("gcc");
60
61  /* Opening quotation mark.  */
62  open_quote = _("`");
63
64  /* Closing quotation mark.  */
65  close_quote = _("'");
66
67#if defined HAVE_LANGINFO_CODESET
68  locale_encoding = nl_langinfo (CODESET);
69  if (locale_encoding != NULL
70      && (!strcasecmp (locale_encoding, "utf-8")
71	  || !strcasecmp (locale_encoding, "utf8")))
72    locale_utf8 = true;
73#endif
74
75  if (!strcmp (open_quote, "`") && !strcmp (close_quote, "'"))
76    {
77      /* Untranslated quotes that it may be possible to replace with
78	 U+2018 and U+2019; but otherwise use "'" instead of "`" as
79	 opening quote.  */
80      open_quote = "'";
81#if defined HAVE_LANGINFO_CODESET
82      if (locale_utf8)
83	{
84	  open_quote = "\xe2\x80\x98";
85	  close_quote = "\xe2\x80\x99";
86	}
87#endif
88    }
89}
90
91#if defined HAVE_WCHAR_H && defined HAVE_WORKING_MBSTOWCS && defined HAVE_WCSWIDTH
92#include <wchar.h>
93
94/* Returns the width in columns of MSGSTR, which came from gettext.
95   This is for indenting subsequent output.  */
96
97size_t
98gcc_gettext_width (const char *msgstr)
99{
100  size_t nwcs = mbstowcs (0, msgstr, 0);
101  wchar_t *wmsgstr = XALLOCAVEC (wchar_t, nwcs + 1);
102
103  mbstowcs (wmsgstr, msgstr, nwcs + 1);
104  return wcswidth (wmsgstr, nwcs);
105}
106
107#else  /* no wcswidth */
108
109/* We don't have any way of knowing how wide the string is.  Guess
110   the length of the string.  */
111
112size_t
113gcc_gettext_width (const char *msgstr)
114{
115  return strlen (msgstr);
116}
117
118#endif
119
120#endif /* ENABLE_NLS */
121
122#ifndef ENABLE_NLS
123
124const char *
125fake_ngettext (const char *singular, const char *plural, unsigned long n)
126{
127  if (n == 1UL)
128    return singular;
129
130  return plural;
131}
132
133#endif
134
135/* Return the indent for successive lines, using the width of
136   the STR.  STR must have been translated already.  The string
137   must be freed by the caller.  */
138
139char *
140get_spaces (const char *str)
141{
142   size_t len = gcc_gettext_width (str);
143   char *spaces = XNEWVEC (char, len + 1);
144   memset (spaces, ' ', len);
145   spaces[len] = '\0';
146   return spaces;
147}
148
149
150
151