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.
14 #include "support/filetools.h"
15 #include "support/environment.h"
16 #include "support/package.h"
18 #include <boost/current_function.hpp>
19 #include <boost/regex.hpp>
23 using lyx::support::package;
24 using lyx::support::getEnv;
25 using lyx::support::setEnv;
37 // This version of the Pimpl utilizes the message capability of
38 // libstdc++ that is distributed with GNU G++.
39 class Messages::Pimpl {
41 typedef std::messages<char>::catalog catalog;
43 Pimpl(string const & l)
45 loc_gl(lang_.c_str()),
46 mssg_gl(std::use_facet<std::messages<char> >(loc_gl))
48 //lyxerr << "Messages: language(" << l
49 // << ") in dir(" << dir << ")" << std::endl;
51 cat_gl = mssg_gl.open(PACKAGE, loc_gl, package().locale_dir().c_str());
57 mssg_gl.close(cat_gl);
60 string const get(string const & msg) const
62 return mssg_gl.get(cat_gl, 0, 0, msg);
70 std::messages<char> const & mssg_gl;
81 # include <libintl.h> // use the header already in the system *EK*
83 # include "../intl/libintl.h"
86 // This is a more traditional variant.
87 class Messages::Pimpl {
89 Pimpl(string const & l)
92 if ( lang_.empty() ) {
93 char const * lc_msgs = 0;
94 #ifdef HAVE_LC_MESSAGES
95 lc_msgs = setlocale(LC_MESSAGES, NULL);
97 lang_ = lc_msgs ? lc_msgs : "";
99 // strip off any encoding suffix, i.e., assume 8-bit po files
100 string::size_type i = lang_.find(".");
101 lang_ = lang_.substr(0, i);
102 lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
103 << ": language(" << lang_ << ")" << std::endl;
108 string const get(string const & m) const
113 // In this order, see support/filetools.C:
114 string lang = getEnv("LC_ALL");
116 lang = getEnv("LC_MESSAGES");
118 lang = getEnv("LANG");
123 #ifdef HAVE_LC_MESSAGES
124 char const * lc_msgs = setlocale(LC_MESSAGES, lang_.c_str());
126 // setlocale fails (returns NULL) if the corresponding locale
128 // On windows (mingw) it always returns NULL.
129 // Since this method gets called for every translatable
130 // buffer string like e.g. "Figure:" we warn only once.
132 static bool warned = false;
133 if (!warned && !lc_msgs) {
135 lyxerr << "Locale " << lang_ << " could not be set" << std::endl;
138 // CTYPE controls what getmessage thinks what encoding the po file uses
139 char const * lc_ctype = setlocale(LC_CTYPE, NULL);
140 string oldCTYPE = lc_ctype ? lc_ctype : "";
142 setlocale(LC_CTYPE, lang_.c_str());
144 char const * c = bindtextdomain(PACKAGE, package().locale_dir().c_str());
148 << BOOST_CURRENT_FUNCTION << '\n'
149 << "Error code: " << errno << '\n'
150 << "Lang, mess: " << lang_ << " " << m << '\n'
151 << "Directory : " << package().locale_dir() << '\n'
152 << "Rtn value : " << c << std::endl;
155 const char* msg = gettext(m.c_str());
156 string translated(msg ? msg : m);
157 // Some english words have different translations, depending
158 // on context. In these cases the original string is
159 // augmented by context information (e.g.
160 // "To:[[as in 'From page x to page y']]" and
161 // "To:[[as in 'From format x to format y']]".
162 // This means that we need to filter out everything in
163 // double square brackets at the end of the string,
164 // otherwise the user sees bogus messages.
165 // If we are unable to honour the request we just
166 // return what we got in.
167 static boost::regex const reg("^([^\\[]*)\\[\\[[^\\]]*\\]\\]$");
169 if (regex_match(translated, sub, reg))
170 translated = sub.str(1);
171 #ifdef HAVE_LC_MESSAGES
172 setlocale(LC_MESSAGES, lang.c_str());
174 setlocale(LC_CTYPE, oldCTYPE.c_str());
184 // This is the dummy variant.
185 class Messages::Pimpl {
187 Pimpl(string const &) {}
191 string const get(string const & m) const
200 : pimpl_(new Pimpl(""))
204 Messages::Messages(string const & l)
205 : pimpl_(new Pimpl(l))
209 // We need this for the sake of scoped_ptr
210 Messages::~Messages()
214 string const Messages::get(string const & msg) const
216 return pimpl_->get(msg);