2 * This file is part of LyX, the document processor.
3 * Licence details can be found in the file COPYING.
5 * \author Lars Gullik Bjønnes
7 * Full author contact details are available in file CREDITS.
12 #include "support/Messages.h"
14 #include "support/debug.h"
15 #include "support/docstring.h"
16 #include "support/environment.h"
17 #include "support/Package.h"
18 #include "support/unicode.h"
20 #include "support/lassert.h"
29 using lyx::from_ascii;
31 void cleanTranslation(docstring & trans)
34 Some english words have different translations, depending on
35 context. In these cases the original string is augmented by
36 context information (e.g. "To:[[as in 'From page x to page
37 y']]" and "To:[[as in 'From format x to format y']]". This
38 means that we need to filter out everything in double square
39 brackets at the end of the string, otherwise the user sees
40 bogus messages. If we are unable to honour the request we
41 just return what we got in.
43 size_t const pos1 = trans.find(from_ascii("[["));
44 if (pos1 != docstring::npos) {
45 size_t const pos2 = trans.find(from_ascii("]]"), pos1);
46 if (pos2 != docstring::npos)
47 trans.erase(pos1, pos2 - pos1 + 2);
61 # include <libintl.h> // use the header already in the system *EK*
63 # include "../../intl/libintl.h"
66 using namespace lyx::support;
70 // This version use the traditional gettext.
71 Messages::Messages(string const & l)
72 : lang_(l), warned_(false)
74 // strip off any encoding suffix, i.e., assume 8-bit po files
75 size_t i = lang_.find(".");
76 lang_ = lang_.substr(0, i);
77 LYXERR(Debug::LOCALE, "language(" << lang_ << ")");
84 string const locale_dir = package().locale_dir().toFilesystemEncoding();
85 char const * c = bindtextdomain(PACKAGE, locale_dir.c_str());
88 LYXERR(Debug::LOCALE, "Error code: " << errno << '\n'
89 << "Directory : " << package().locale_dir().absFilename() << '\n'
90 << "Rtn value : " << c);
93 if (!bind_textdomain_codeset(PACKAGE, ucs4_codeset)) {
94 LYXERR(Debug::LOCALE, "Error code: " << errno << '\n'
95 << "Codeset : " << ucs4_codeset);
102 docstring const Messages::get(string const & m) const
107 // Look for the translated string in the cache.
108 TranslationCache::iterator it = cache_.find(m);
109 if (it != cache_.end())
112 // The string was not found, use gettext to generate it
114 static string const oldLANGUAGE = getEnv("LANGUAGE");
115 static string const oldLC_ALL = getEnv("LC_ALL");
116 if (!lang_.empty()) {
117 // This GNU extension overrides any language locale
119 LYXERR(Debug::LOCALE, "Setting LANGUAGE to " << lang_);
120 if (!setEnv("LANGUAGE", lang_))
121 LYXERR(Debug::LOCALE, "\t... failed!");
122 // However, setting LANGUAGE does nothing when the
123 // locale is "C". Therefore we set the locale to
124 // something that is believed to exist on most
125 // systems. The idea is that one should be able to
126 // load German documents even without having de_DE
128 LYXERR(Debug::LOCALE, "Setting LC_ALL to en_US");
129 if (!setEnv("LC_ALL", "en_US"))
130 LYXERR(Debug::LOCALE, "\t... failed!");
131 #ifdef HAVE_LC_MESSAGES
132 setlocale(LC_MESSAGES, "");
136 char const * m_c = m.c_str();
137 char const * trans_c = gettext(m_c);
140 LYXERR(Debug::LOCALE, "Undefined result from gettext");
141 else if (trans_c == m_c) {
142 LYXERR(Debug::LOCALE, "Same as entered returned");
143 trans = from_ascii(m);
145 //LYXERR(Debug::LOCALE, "We got a translation");
146 // m is actually not a char const * but ucs4 data
147 trans = reinterpret_cast<char_type const *>(trans_c);
150 cleanTranslation(trans);
152 // Reset environment variables as they were.
153 if (!lang_.empty()) {
154 // Reset everything as it was.
155 LYXERR(Debug::LOCALE, "restoring LANGUAGE from " << getEnv("LANGUAGE")
156 << " to " << oldLANGUAGE);
157 if (!setEnv("LANGUAGE", oldLANGUAGE))
158 LYXERR(Debug::LOCALE, "\t... failed!");
159 LYXERR(Debug::LOCALE, "restoring LC_ALL from " << getEnv("LC_ALL")
160 << " to " << oldLC_ALL);
161 if (!setEnv("LC_ALL", oldLC_ALL))
162 LYXERR(Debug::LOCALE, "\t... failed!");
163 #ifdef HAVE_LC_MESSAGES
164 setlocale(LC_MESSAGES, "");
168 pair<TranslationCache::iterator, bool> result =
169 cache_.insert(make_pair(m, trans));
171 LASSERT(result.second, /**/);
173 return result.first->second;
179 // This is the dummy variant.
183 Messages::Messages(string const & l) {}
185 void Messages::init()
190 docstring const Messages::get(string const & m) const
192 docstring trans = from_ascii(m);
193 cleanTranslation(trans);
207 // This version of the Pimpl utilizes the message capability of
208 // libstdc++ that is distributed with GNU G++.
209 class Messages::Pimpl {
211 typedef messages<char>::catalog catalog;
213 Pimpl(string const & l)
215 loc_gl(lang_.c_str()),
216 mssg_gl(use_facet<messages<char> >(loc_gl))
218 //LYXERR("Messages: language(" << l << ") in dir(" << dir << ")");
220 string const locale_dir = package().locale_dir().toFilesystemEncoding();
221 cat_gl = mssg_gl.open(PACKAGE, loc_gl, locale_dir.c_str());
227 mssg_gl.close(cat_gl);
230 docstring const get(string const & msg) const
232 return mssg_gl.get(cat_gl, 0, 0, msg);
240 messages<char> const & mssg_gl;