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-rw-r--r--catgets/catgets.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/catgets/catgets.c b/catgets/catgets.c
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+++ b/catgets/catgets.c
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+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <alloca.h>
+#include <nl_types.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "catgetsinfo.h"
+
+
+/* Open the catalog and return a descriptor for the catalog.  */
+nl_catd
+catopen (const char *cat_name, int flag)
+{
+  __nl_catd result;
+  const char *env_var;
+
+  result = (__nl_catd) malloc (sizeof (__nl_catd));
+  if (result == NULL)
+    /* We cannot get enough memory.  */
+    return (nl_catd) -1;
+
+  result->status = closed;
+
+  result->cat_name = strdup (cat_name);
+  if (result->cat_name == NULL)
+    {
+      free (result);
+      return (nl_catd) -1;
+    }
+
+  if (strchr (cat_name, '/') == NULL)
+    {
+      if (flag == NL_CAT_LOCALE)
+	{
+	  env_var = getenv ("LC_ALL");
+	  if (env_var == NULL)
+	    {
+	      env_var = getenv ("LC_MESSAGES");
+	      if (env_var == NULL)
+		{
+		  env_var = getenv ("LANG");
+		  if (env_var == NULL)
+		    env_var = "C";
+		}
+	    }
+	}
+      else
+	{
+	  env_var = getenv ("LANG");
+	  if (env_var == NULL)
+	    env_var = "C";
+	}
+
+      result->env_var = strdup (env_var);
+      if (result->env_var == NULL)
+	{
+	  free ((void *) result->cat_name);
+	  free ((void *) result);
+	  return (nl_catd) -1;
+	}
+
+      if (getenv ("NLSPATH") != NULL)
+	result->nlspath = strdup (getenv ("NLSPATH"));
+      else
+	result->nlspath = strdup (NLSPATH);
+
+      if (result->nlspath == NULL)
+	{
+	  free ((void *) result->cat_name);
+	  free ((void *) result->env_var);
+	  free ((void *) result);
+	  return (nl_catd) -1;
+	}
+    }
+  else
+    {
+      result->env_var = NULL;
+      result->nlspath = NULL;
+    }
+
+  return (nl_catd) result;
+}
+
+
+/* Return message from message catalog.  */
+char *
+catgets (nl_catd catalog_desc, int set, int message, const char *string)
+{
+  __nl_catd catalog;
+  size_t idx;
+  size_t cnt;
+
+  /* Be generous if catalog which failed to be open is used.  */
+  if (catalog_desc == (nl_catd) -1 || ++set <= 0 || message < 0)
+    return (char *) string;
+
+  catalog = (__nl_catd) catalog_desc;
+
+  if (catalog->status == closed)
+    __open_catalog (catalog, 1);
+
+  if (catalog->status == nonexisting)
+    return (char *) string;
+
+  idx = ((set * message) % catalog->plane_size) * 3;
+  cnt = 0;
+  do
+    {
+      if (catalog->name_ptr[idx + 0] == (u_int32_t) set
+	  && catalog->name_ptr[idx + 1] == (u_int32_t) message)
+	return (char *) &catalog->strings[catalog->name_ptr[idx + 2]];
+
+      idx += catalog->plane_size * 3;
+    }
+  while (++cnt < catalog->plane_depth);
+
+  return (char *) string;
+}
+
+
+/* Return resources used for loaded message catalog.  */
+int
+catclose (nl_catd catalog_desc)
+{
+  __nl_catd catalog;
+
+  catalog = (__nl_catd) catalog_desc;
+
+  if (catalog->status == mmaped)
+    munmap ((void *) catalog->file_ptr, catalog->file_size);
+  else if (catalog->status == malloced)
+    free ((void *) catalog->file_ptr);
+  else if (catalog->status != closed && catalog->status != nonexisting)
+    return -1;
+
+  if (catalog->nlspath)
+    free ((void *) catalog->nlspath);
+  if (catalog->env_var)
+    free ((void *) catalog->env_var);
+  free ((void *) catalog);
+
+  return 0;
+}