fix arabtex-related problems (bug 1225 and bug 1404)

[lyx.git] / src / messages.C

diff --git a/src/messages.C b/src/messages.C
index a3748451d4036fecbed94c256a87fcbfe1466ba8..0fcf097708f33bccf4eca75225e2270050aa5e56 100644 (file)
--- a/src/messages.C
+++ b/src/messages.C
@@ -1,38 +1,162 @@
-* \file messages.C
+/* \file messages.C
  * This file is part of LyX, the document processor.
  * Licence details can be found in the file COPYING.
  *
  * \author Lars Gullik Bjønnes
  *
- * Full author contact details are available in file CREDITS
+ * Full author contact details are available in file CREDITS.
  */
 
 #include <config.h>
 
 #include "messages.h"
-#include "debug.h"
+#include "support/filetools.h"
+#include "support/path_defines.h"
 
-using std::endl;
+using lyx::support::GetEnvPath;
+using lyx::support::lyx_localedir;
 
+using std::string;
 
-Messages::Messages(string const & l, string const & dir)
-       : lang_(l), localedir_(dir),
-         loc_gl(lang_.c_str()),
-         mssg_gl(std::use_facet<std::messages<char> >(loc_gl))
+
+#ifdef ENABLE_NLS
+
+namespace {
+
+string const & getLocaleDir()
 {
-       lyxerr << "Messages: language(" << l << ") in dir(" << dir << ")" << endl;
+       static string locale_dir;
 
-       cat_gl = mssg_gl.open("lyx", loc_gl, localedir_.c_str());
+       if (locale_dir.empty()) {
+               locale_dir = GetEnvPath("LYX_LOCALEDIR");
+               if (locale_dir.empty())
+                       locale_dir = lyx_localedir();
+       }
+       return locale_dir;
 }
 
+} // anon namespace
+
+#if 0
+
+-#include <locale>
+
+// This version of the Pimpl utilizes the message capability of
+// libstdc++ that is distributed with GNU G++.
+class Messages::Pimpl {
+public:
+       typedef std::messages<char>::catalog catalog;
+
+       Pimpl(string const & l)
+               : lang_(l),
+                 loc_gl(lang_.c_str()),
+                 mssg_gl(std::use_facet<std::messages<char> >(loc_gl))
+       {
+               //lyxerr << "Messages: language(" << l
+               //       << ") in dir(" << dir << ")" << std::endl;
+
+               cat_gl = mssg_gl.open(PACKAGE, loc_gl, getLocaleDir().c_str());
+
+       }
+
+       ~Pimpl()
+       {
+               mssg_gl.close(cat_gl);
+       }
+
+       string const get(string const & msg) const
+       {
+               return mssg_gl.get(cat_gl, 0, 0, msg);
+       }
+private:
+       ///
+       string lang_;
+       ///
+       std::locale loc_gl;
+       ///
+       std::messages<char> const & mssg_gl;
+       ///
+       catalog cat_gl;
+};
+#else
+
+#ifdef HAVE_LOCALE_H
+#  include <locale.h>
+#endif
+
+#  if HAVE_GETTEXT
+#    include <libintl.h>      // use the header already in the system *EK*
+#  else
+#    include "../intl/libintl.h"
+#  endif
+
+// This is a more traditional variant.
+class Messages::Pimpl {
+public:
+       Pimpl(string const & l)
+               : lang_(l)
+       {
+               //lyxerr << "Messages: language(" << l
+               //       << ") in dir(" << dir << ")" << std::endl;
 
+             bindtextdomain(PACKAGE, getLocaleDir().c_str());
+             textdomain(PACKAGE);
+       }
+
+       ~Pimpl() {}
+
+       string const get(string const & m) const
+       {
+               if (m.empty())
+                       return m;
+
+               char * old = strdup(setlocale(LC_ALL, 0));
+               char * n = setlocale(LC_ALL, lang_.c_str());
+               const char* msg = gettext(m.c_str());
+               setlocale(LC_ALL, old);
+               free(old);
+               // If we are unable to honour the request we just
+               // return what we got in.
+               return (!n ? m : string(msg));
+       }
+private:
+       ///
+       string lang_;
+};
+#endif
+
+#else // ENABLE_NLS
+// This is the dummy variant.
+class Messages::Pimpl {
+public:
+       Pimpl(string const &) {}
+
+       ~Pimpl() {}
+
+       string const get(string const & m) const
+       {
+               return m;
+       }
+};
+#endif
+
+
+Messages::Messages()
+       : pimpl_(new Pimpl(""))
+{}
+
+
+Messages::Messages(string const & l)
+       : pimpl_(new Pimpl(l))
+{}
+
+
+// We need this for the sake of scoped_ptr
 Messages::~Messages()
-{
-       mssg_gl.close(cat_gl);
-}
+{}
 
 
 string const Messages::get(string const & msg) const
 {
-       return mssg_gl.get(cat_gl, 0, 0, msg);
+       return pimpl_->get(msg);
 }