286 lines
8.2 KiB
C++
286 lines
8.2 KiB
C++
// I18n.hh for Fluxbox Window Manager
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// Copyright (c) 2001 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
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//
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// I18n.cc for Blackbox - an X11 Window manager
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// Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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/* Note:
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* A good reference for the older non-gettext style I18n
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* functions is the "Locale tutorial"
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* Written by Patrick D'Cruze (pdcruze@orac.iinet.com.au)
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* A copy of which is available (at the time of writing) here:
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* http://www.kulichki.com/moshkow/CYRILLIC/locale-tutorial-0_8.txt
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*/
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#include "I18n.hh"
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#include "FileUtil.hh"
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#include <X11/Xlocale.h>
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#include <cstdlib>
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#include <cstring>
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#include <cstdarg>
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#include <iostream>
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#ifdef HAVE_LOCALE_H
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#include <locale.h>
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#endif // HAVE_LOCALE_H
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#ifdef HAVE_NL_TYPES_H
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// this is needed for linux libc5 systems
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extern "C" {
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#include <nl_types.h>
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}
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#elif defined(__CYGWIN__) || defined(__EMX__) || defined(__APPLE__)
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extern "C" {
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typedef int nl_catd;
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char *catgets(nl_catd cat, int set_number, int message_number, char *message);
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nl_catd catopen(char *name, int flag);
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void catclose(nl_catd cat);
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}
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#endif // HAVE_NL_TYPES_H
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using std::cerr;
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using std::endl;
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using std::string;
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namespace {
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#if defined(NLS)
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const char UTF8_SUFFIX[] = "-UTF-8.cat";
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const size_t UTF8_SUFFIX_LEN = sizeof(UTF8_SUFFIX)-1; // without \0
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const char DEFAULT_CATFILE[] = "fluxbox.cat";
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const char ENV_CATFILE[] = "FLUXBOX_CATFILE";
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const char ENV_CATDIR[] = "FLUXBOX_CATDIR";
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const char* getCatalogDir() {
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const char* cat_dir = getenv(ENV_CATDIR);
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if (cat_dir) {
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return cat_dir;
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}
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return LOCALEPATH;
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}
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#endif
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const nl_catd INVALID_CATALOG = (nl_catd)(-1);
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nl_catd s_catalog_fd = INVALID_CATALOG;
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std::string join_str(size_t n, ...) {
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std::string s;
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va_list args;
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va_start(args, n);
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for (; n > 0; n--) {
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s.append(va_arg(args, const char*));
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}
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return s;
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}
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}
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namespace FbTk {
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// initialize the i18n-system be opening the catalog-file
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// named by 'catalog'. per default we expect 'catalog' to
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// be 0/NULL, the code picks a sane default then:
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//
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// - environment variable FLUXBOX_CATFILE is set? use it
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// - DEFAULT_CATFILE ("fluxbox.cat")
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// - the utf8 encoded translation for the current locale
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//
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// handling things this was allows us to test catalog files
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// without putting them into the install path
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// $PREFIX/share/fluxbox/nls/XYZ/
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void I18n::init(const char* catalog) {
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static bool init = false;
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if (init) {
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return;
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}
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#if defined(NLS) && defined(HAVE_CATOPEN)
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if (!catalog) {
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const char* c = getenv(ENV_CATFILE);
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if (!c) {
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c = DEFAULT_CATFILE;
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}
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catalog = c;
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}
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FbStringUtil::init();
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int flag;
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I18n& i18n = I18n::instance();
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const string dir = getCatalogDir();
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const string locale = i18n.m_locale;
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string clean_locale = locale;
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size_t i;
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// clean the locale, we have to append something later on
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i = clean_locale.find('.');
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if (i != string::npos)
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clean_locale.erase(i);
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#ifdef MCLoadBySet
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flag = MCLoadBySet;
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#else
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flag = NL_CAT_LOCALE;
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#endif
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struct { std::string catalog; std::string locale; bool utf8; } _catalog[] = {
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// first try pure 'catalog'. catopen() will use NLSPATH if it's
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// set and replaces '%N' by 'catalog'. eg: with catalog="fluxbox.cat"
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// "/usr/share/fluxbox/nls/C/%N" becomes "/usr/share/fluxbox/nls/C/fluxbox.cat"
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{ string(catalog), locale, false },
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// try full-path to 'catalog'
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{ join_str(5, dir.c_str(), "/", locale.c_str(), "/", catalog), locale, false },
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// try the UTF-8 catalog, this also picks up situations where
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// the codeset somehow isn't specified
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{ join_str(5, dir.c_str(), "/", clean_locale.c_str(), ".UTF-8/", catalog),
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join_str(2, clean_locale.c_str(), ".UTF8"), true},
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};
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for (i = 0; i < sizeof(_catalog)/sizeof(_catalog[0]); i++) {
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if (_catalog[i].utf8 && locale == "C") {
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continue;
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}
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const char* fname = _catalog[i].catalog.c_str();
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s_catalog_fd = catopen(fname, flag);
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if (s_catalog_fd == INVALID_CATALOG) {
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continue;
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}
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i18n.m_locale = _catalog[i].locale;
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if (FbStringUtil::haveUTF8()) {
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if (_catalog[i].utf8) {
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i18n.m_utf8_translate = true;
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} else {
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size_t n = _catalog[i].catalog.rfind(UTF8_SUFFIX);
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if (n != std::string::npos && (n + UTF8_SUFFIX_LEN) == _catalog[i].catalog.size()) {
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i18n.m_utf8_translate = true;
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}
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}
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}
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break;
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}
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if (s_catalog_fd == INVALID_CATALOG) {
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cerr<<"Warning: Failed to open file("<< catalog <<")"<<endl
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<<"for translation, using default messages."<<endl;
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}
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#endif // HAVE_CATOPEN
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}
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I18n::I18n() : m_multibyte(false), m_utf8_translate(false) {
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#if defined(HAVE_SETLOCALE) && defined(NLS)
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//make sure we don't get 0 to m_locale string
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char *temp = setlocale(LC_MESSAGES, "");
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m_locale = ( temp ? temp : "");
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if (m_locale.empty()) {
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cerr<<"Warning: Failed to set locale, reverting to \"C\""<<endl;
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#endif // defined(HAVE_SETLOCALE) && defined(NLS)
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m_locale = "C";
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#if defined(HAVE_SETLOCALE) && defined(NLS)
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} else {
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setlocale(LC_TIME, "");
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// MB_CUR_MAX returns the size of a char in the current locale
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if (MB_CUR_MAX > 1)
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m_multibyte = true;
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// truncate any encoding off the end of the locale
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string::size_type index = m_locale.find('@');
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if (index != string::npos)
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m_locale.erase(index);
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index = m_locale.find('=');
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if (index != string::npos)
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m_locale.erase(0, index+1);
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}
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#endif // defined(HAVE_SETLOCALE) && defined(NLS)
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}
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I18n::~I18n() {
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#if defined(NLS) && defined(HAVE_CATCLOSE)
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if (s_catalog_fd != INVALID_CATALOG)
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catclose(s_catalog_fd);
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#endif // HAVE_CATCLOSE
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}
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I18n& I18n::instance() {
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static I18n singleton; //singleton object
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return singleton;
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}
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// Translate_FB means it'll become an FbString that goes to X for Fonts,
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// No translate means it stays in the local encoding, for printing to the
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// console.
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FbString I18n::getMessage(int set_number, int message_number,
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const char *default_message, bool translate_fb) const {
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FbString msg(default_message);
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#if defined(NLS) && defined(HAVE_CATGETS)
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if (s_catalog_fd != INVALID_CATALOG) {
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const char *ret = catgets(s_catalog_fd, set_number, message_number, default_message);
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if (ret == default_message || ret == NULL) {
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// can't translate, leave it in raw ascii (utf-8 compatible)
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} else if (!m_utf8_translate && translate_fb)
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// Local input, UTF-8 output
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msg = FbStringUtil::LocaleStrToFb(ret);
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else if (m_utf8_translate && !translate_fb)
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// UTF-8 input, local output
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msg = FbStringUtil::FbStrToLocale(ret);
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else
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// UTF-8 input, UTF-8 output OR
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// local input, local output
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msg = ret;
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}
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#endif // NLS && HAVE_CATGETS
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return msg;
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}
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} // end namespace FbTk
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