Initial revision

From-SVN: r19495

gcc/intl/bindtextdom.c

+/* Implementation of the bindtextdomain(3) function
+   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if defined STDC_HEADERS || defined _LIBC
+# include <stdlib.h>
+#else
+# ifdef HAVE_MALLOC_H
+#  include <malloc.h>
+# else
+void free ();
+# endif
+#endif
+
+#if defined HAVE_STRING_H || defined _LIBC
+# include <string.h>
+#else
+# include <strings.h>
+# ifndef memcpy
+#  define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
+# endif
+#endif
+
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgettext.h"
+#endif
+#include "gettext.h"
+#include "gettextP.h"
+
+/* @@ end of prolog @@ */
+
+/* Contains the default location of the message catalogs.  */
+extern const char _nl_default_dirname[];
+
+/* List with bindings of specific domains.  */
+extern struct binding *_nl_domain_bindings;
+
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define BINDTEXTDOMAIN __bindtextdomain
+# ifndef strdup
+#  define strdup(str) __strdup (str)
+# endif
+#else
+# define BINDTEXTDOMAIN bindtextdomain__
+#endif
+
+/* Specify that the DOMAINNAME message catalog will be found
+   in DIRNAME rather than in the system locale data base.  */
+char *
+BINDTEXTDOMAIN (domainname, dirname)
+     const char *domainname;
+     const char *dirname;
+{
+  struct binding *binding;
+
+  /* Some sanity checks.  */
+  if (domainname == NULL || domainname[0] == '\0')
+    return NULL;
+
+  for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
+    {
+      int compare = strcmp (domainname, binding->domainname);
+      if (compare == 0)
+	/* We found it!  */
+	break;
+      if (compare < 0)
+	{
+	  /* It is not in the list.  */
+	  binding = NULL;
+	  break;
+	}
+    }
+
+  if (dirname == NULL)
+    /* The current binding has be to returned.  */
+    return binding == NULL ? (char *) _nl_default_dirname : binding->dirname;
+
+  if (binding != NULL)
+    {
+      /* The domain is already bound.  If the new value and the old
+	 one are equal we simply do nothing.  Otherwise replace the
+	 old binding.  */
+      if (strcmp (dirname, binding->dirname) != 0)
+	{
+	  char *new_dirname;
+
+	  if (strcmp (dirname, _nl_default_dirname) == 0)
+	    new_dirname = (char *) _nl_default_dirname;
+	  else
+	    {
+#if defined _LIBC || defined HAVE_STRDUP
+	      new_dirname = strdup (dirname);
+	      if (new_dirname == NULL)
+		return NULL;
+#else
+	      size_t len = strlen (dirname) + 1;
+	      new_dirname = (char *) malloc (len);
+	      if (new_dirname == NULL)
+		return NULL;
+
+	      memcpy (new_dirname, dirname, len);
+#endif
+	    }
+
+	  if (binding->dirname != _nl_default_dirname)
+	    free (binding->dirname);
+
+	  binding->dirname = new_dirname;
+	}
+    }
+  else
+    {
+      /* We have to create a new binding.  */
+#if !defined _LIBC && !defined HAVE_STRDUP
+      size_t len;
+#endif
+      struct binding *new_binding =
+	(struct binding *) malloc (sizeof (*new_binding));
+
+      if (new_binding == NULL)
+	return NULL;
+
+#if defined _LIBC || defined HAVE_STRDUP
+      new_binding->domainname = strdup (domainname);
+      if (new_binding->domainname == NULL)
+	return NULL;
+#else
+      len = strlen (domainname) + 1;
+      new_binding->domainname = (char *) malloc (len);
+      if (new_binding->domainname == NULL)
+	return NULL;
+      memcpy (new_binding->domainname, domainname, len);
+#endif
+
+      if (strcmp (dirname, _nl_default_dirname) == 0)
+	new_binding->dirname = (char *) _nl_default_dirname;
+      else
+	{
+#if defined _LIBC || defined HAVE_STRDUP
+	  new_binding->dirname = strdup (dirname);
+	  if (new_binding->dirname == NULL)
+	    return NULL;
+#else
+	  len = strlen (dirname) + 1;
+	  new_binding->dirname = (char *) malloc (len);
+	  if (new_binding->dirname == NULL)
+	    return NULL;
+	  memcpy (new_binding->dirname, dirname, len);
+#endif
+	}
+
+      /* Now enqueue it.  */
+      if (_nl_domain_bindings == NULL
+	  || strcmp (domainname, _nl_domain_bindings->domainname) < 0)
+	{
+	  new_binding->next = _nl_domain_bindings;
+	  _nl_domain_bindings = new_binding;
+	}
+      else
+	{
+	  binding = _nl_domain_bindings;
+	  while (binding->next != NULL
+		 && strcmp (domainname, binding->next->domainname) > 0)
+	    binding = binding->next;
+
+	  new_binding->next = binding->next;
+	  binding->next = new_binding;
+	}
+
+      binding = new_binding;
+    }
+
+  return binding->dirname;
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__bindtextdomain, bindtextdomain);
+#endif