Branch data Line data Source code
1 : : /********************************************************************\
2 : : * gnc-locale-utils.cpp -- provide a default locale for C++ *
3 : : * Copyright (C) 2019 John Ralls <jralls@ceridwen.us *
4 : : * *
5 : : * This program is free software; you can redistribute it and/or *
6 : : * modify it under the terms of the GNU General Public License as *
7 : : * published by the Free Software Foundation; either version 2 of *
8 : : * the License, or (at your option) any later version. *
9 : : * *
10 : : * This program is distributed in the hope that it will be useful, *
11 : : * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 : : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 : : * GNU General Public License for more details. *
14 : : * *
15 : : * You should have received a copy of the GNU General Public License*
16 : : * along with this program; if not, contact: *
17 : : * *
18 : : * Free Software Foundation Voice: +1-617-542-5942 *
19 : : * 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652 *
20 : : * Boston, MA 02110-1301, USA gnu@gnu.org *
21 : : \********************************************************************/
22 : : #include <glib.h>
23 : : #include <clocale>
24 : : #include <boost/locale.hpp>
25 : : #include "gnc-locale-utils.hpp"
26 : : #include <config.h>
27 : :
28 : : /** Cache the UI locale
29 : : *
30 : : * We don't want to set the default locale because we need
31 : : * std::locale::classic for consistency in stored data. We also don't
32 : : * want to call std::locale("") more than once, it's slow... and we
33 : : * don't want to call it on MinGW32 at all because that supports only
34 : : * std::locale::classic and throws if you try to construct anything
35 : : * else. Boost::locale doesn't support std::locale::facet required by
36 : : * boost::datetime (go figure).
37 : : *
38 : : * @return a copy of std::locale::classic() on MinGW32 and a copy of
39 : : * the cached result of std::locale("") otherwise.
40 : : */
41 : : const std::locale&
42 : 11822 : gnc_get_locale()
43 : : {
44 : : #ifdef __MINGW32__
45 : : return std::locale::classic(); // Nothing else supported.
46 : : #else
47 : 11822 : static std::locale cached;
48 : : static bool tried_already = false;
49 : 11822 : if (!tried_already)
50 : : {
51 : 26 : tried_already = true;
52 : : try
53 : : {
54 : 26 : cached = std::locale("");
55 : : }
56 : 0 : catch (const std::runtime_error& err)
57 : : {
58 : 0 : char* locale = g_strdup(setlocale(LC_ALL, ""));
59 : :
60 : 0 : g_log(G_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
61 : : "Failed to create C++ default locale from "
62 : : "%s because %s. Using the 'C' locale for C++.",
63 : 0 : locale, err.what());
64 : 0 : g_free(locale);
65 : 0 : cached = std::locale::classic();
66 : 0 : }
67 : : }
68 : 11822 : return cached;
69 : : #endif
70 : : }
71 : :
72 : :
73 : : static std::locale boost_cached;
74 : : static bool tried_boost_already = false;
75 : :
76 : : void
77 : 0 : gnc_init_boost_locale (const std::string& messages_path)
78 : : {
79 : 0 : if (!tried_boost_already)
80 : : {
81 : 0 : tried_boost_already = true;
82 : :
83 : : try
84 : : {
85 : 0 : boost::locale::generator gen;
86 : 0 : if (!messages_path.empty())
87 : 0 : gen.add_messages_path(messages_path);
88 : : else
89 : 0 : g_log(G_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
90 : : "Attempt to initialize boost_locale without a message_path. "
91 : : "If message catalogs are not installed in the system's default locations "
92 : : "user interface strings will not be translated.");
93 : 0 : gen.add_messages_domain(PROJECT_NAME);
94 : 0 : boost_cached = gen ("");
95 : 0 : }
96 : 0 : catch (const std::runtime_error& err)
97 : : {
98 : 0 : char* locale = g_strdup(setlocale(LC_ALL, ""));
99 : :
100 : 0 : g_log(G_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
101 : : "Failed to create C++ default locale from"
102 : : "%s because %s. Using the 'C' locale for C++.",
103 : 0 : locale, err.what());
104 : 0 : boost_cached = std::locale::classic();
105 : 0 : }
106 : : }
107 : 0 : }
108 : :
109 : :
110 : :
111 : : const std::locale&
112 : 3 : gnc_get_boost_locale()
113 : : {
114 : 3 : return boost_cached;
115 : : }
116 : :
117 : :
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