i18n.cc

蒙特卡洛仿真源代码很有参考价值要按照步骤进行操作

// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
// i18n.cc for Blackbox - an X11 Window manager
// Copyright (c) 2001 - 2002 Sean 'Shaleh' Perry <[e-mail]>
// Copyright (c) 1997 - 2000 Brad Hughes ([e-mail])
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#ifdef    HAVE_CONFIG_H
#  include "config.h"
#endif // HAVE_CONFIG_H

extern "C" {
#include <X11/Xlocale.h>

#ifdef HAVE_STDLIB_H
#  include <stdlib.h>
#endif // HAVE_STDLIB_H

#ifdef HAVE_STRING_H
#  include <string.h>
#endif // HAVE_STRING_H

#ifdef HAVE_STDIO_H
#  include <stdio.h>
#endif // HAVE_STDIO_H

#ifdef    HAVE_LOCALE_H
#  include <locale.h>
#endif // HAVE_LOCALE_H
}

#include <string>
using std::string;

#include "i18n.hh"


// the rest of bb source uses True and False from X, so we continue that
#define True true
#define False false

I18n::I18n(void) {
  mb = False;
#ifdef    HAVE_SETLOCALE
  locale = setlocale(LC_ALL, "");
  if (! locale) {
    fprintf(stderr, "failed to set locale, reverting to \"C\"\n");
#endif // HAVE_SETLOCALE
    locale = "C";
#ifdef    HAVE_SETLOCALE
  } else {
    // MB_CUR_MAX returns the size of a char in the current locale
    if (MB_CUR_MAX > 1)
      mb = True;
    // truncate any encoding off the end of the locale
    char *l = strchr(locale, '@');
    if (l) *l = '\0';
    l = strchr(locale, '.');
    if (l) *l = '\0';
  }

#ifdef HAVE_CATOPEN
  catalog_fd = (nl_catd) -1;
#endif
#endif // HAVE_SETLOCALE
}


I18n::~I18n(void) {
#if defined(NLS) && defined(HAVE_CATCLOSE)
  if (catalog_fd != (nl_catd) -1)
    catclose(catalog_fd);
#endif // HAVE_CATCLOSE
}


void I18n::openCatalog(const char *catalog) {
#if defined(NLS) && defined(HAVE_CATOPEN)
  string catalog_filename = LOCALEPATH;
  catalog_filename += '/';
  catalog_filename += locale;
  catalog_filename += '/';
  catalog_filename += catalog;

#  ifdef    MCLoadBySet
  catalog_fd = catopen(catalog_filename.c_str(), MCLoadBySet);
#  else // !MCLoadBySet
  catalog_fd = catopen(catalog_filename.c_str(), NL_CAT_LOCALE);
#  endif // MCLoadBySet

  if (catalog_fd == (nl_catd) -1)
    fprintf(stderr, "failed to open catalog, using default messages\n");
#endif // HAVE_CATOPEN
}

const char* I18n::operator()(int set, int msg, const char *msgString) const {
#if   defined(NLS) && defined(HAVE_CATGETS)
  if (catalog_fd != (nl_catd) -1)
    return catgets(catalog_fd, set, msg, msgString);
  else
#endif
    return msgString;
}