Initial revision

From-SVN: r19496

gcc/intl/l10nflist.c

+/* Handle list of needed message catalogs
+   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+
+   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 HAVE_STRING_H || defined _LIBC
+# ifndef _GNU_SOURCE
+#  define _GNU_SOURCE	1
+# endif
+# include <string.h>
+#else
+# include <strings.h>
+# ifndef memcpy
+#  define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
+# endif
+#endif
+#if !HAVE_STRCHR && !defined _LIBC
+# ifndef strchr
+#  define strchr index
+# endif
+#endif
+
+#if defined _LIBC || defined HAVE_ARGZ_H
+# include <argz.h>
+#endif
+#include <ctype.h>
+#include <sys/types.h>
+
+#if defined STDC_HEADERS || defined _LIBC
+# include <stdlib.h>
+#endif
+
+#include "loadinfo.h"
+
+/* On some strange systems still no definition of NULL is found.  Sigh!  */
+#ifndef NULL
+# if defined __STDC__ && __STDC__
+#  define NULL ((void *) 0)
+# else
+#  define NULL 0
+# endif
+#endif
+
+/* @@ end of prolog @@ */
+
+#ifdef _LIBC
+/* Rename the non ANSI C functions.  This is required by the standard
+   because some ANSI C functions will require linking with this object
+   file and the name space must not be polluted.  */
+# ifndef stpcpy
+#  define stpcpy(dest, src) __stpcpy(dest, src)
+# endif
+#else
+# ifndef HAVE_STPCPY
+static char *stpcpy PARAMS ((char *dest, const char *src));
+# endif
+#endif
+
+/* Define function which are usually not available.  */
+
+#if !defined _LIBC && !defined HAVE___ARGZ_COUNT
+/* Returns the number of strings in ARGZ.  */
+static size_t argz_count__ PARAMS ((const char *argz, size_t len));
+
+static size_t
+argz_count__ (argz, len)
+     const char *argz;
+     size_t len;
+{
+  size_t count = 0;
+  while (len > 0)
+    {
+      size_t part_len = strlen (argz);
+      argz += part_len + 1;
+      len -= part_len + 1;
+      count++;
+    }
+  return count;
+}
+# undef __argz_count
+# define __argz_count(argz, len) argz_count__ (argz, len)
+#endif	/* !_LIBC && !HAVE___ARGZ_COUNT */
+
+#if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
+/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
+   except the last into the character SEP.  */
+static void argz_stringify__ PARAMS ((char *argz, size_t len, int sep));
+
+static void
+argz_stringify__ (argz, len, sep)
+     char *argz;
+     size_t len;
+     int sep;
+{
+  while (len > 0)
+    {
+      size_t part_len = strlen (argz);
+      argz += part_len;
+      len -= part_len + 1;
+      if (len > 0)
+	*argz++ = sep;
+    }
+}
+# undef __argz_stringify
+# define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
+#endif	/* !_LIBC && !HAVE___ARGZ_STRINGIFY */
+
+#if !defined _LIBC && !defined HAVE___ARGZ_NEXT
+static char *argz_next__ PARAMS ((char *argz, size_t argz_len,
+				  const char *entry));
+
+static char *
+argz_next__ (argz, argz_len, entry)
+     char *argz;
+     size_t argz_len;
+     const char *entry;
+{
+  if (entry)
+    {
+      if (entry < argz + argz_len)
+        entry = strchr (entry, '\0') + 1;
+
+      return entry >= argz + argz_len ? NULL : (char *) entry;
+    }
+  else
+    if (argz_len > 0)
+      return argz;
+    else
+      return 0;
+}
+# undef __argz_next
+# define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
+#endif	/* !_LIBC && !HAVE___ARGZ_NEXT */
+
+
+/* Return number of bits set in X.  */
+static int pop PARAMS ((int x));
+
+static inline int
+pop (x)
+     int x;
+{
+  /* We assume that no more than 16 bits are used.  */
+  x = ((x & ~0x5555) >> 1) + (x & 0x5555);
+  x = ((x & ~0x3333) >> 2) + (x & 0x3333);
+  x = ((x >> 4) + x) & 0x0f0f;
+  x = ((x >> 8) + x) & 0xff;
+
+  return x;
+}
+
+
+struct loaded_l10nfile *
+_nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len, mask, language,
+		    territory, codeset, normalized_codeset, modifier, special,
+		    sponsor, revision, filename, do_allocate)
+     struct loaded_l10nfile **l10nfile_list;
+     const char *dirlist;
+     size_t dirlist_len;
+     int mask;
+     const char *language;
+     const char *territory;
+     const char *codeset;
+     const char *normalized_codeset;
+     const char *modifier;
+     const char *special;
+     const char *sponsor;
+     const char *revision;
+     const char *filename;
+     int do_allocate;
+{
+  char *abs_filename;
+  struct loaded_l10nfile *last = NULL;
+  struct loaded_l10nfile *retval;
+  char *cp;
+  size_t entries;
+  int cnt;
+
+  /* Allocate room for the full file name.  */
+  abs_filename = (char *) malloc (dirlist_len
+				  + strlen (language)
+				  + ((mask & TERRITORY) != 0
+				     ? strlen (territory) + 1 : 0)
+				  + ((mask & XPG_CODESET) != 0
+				     ? strlen (codeset) + 1 : 0)
+				  + ((mask & XPG_NORM_CODESET) != 0
+				     ? strlen (normalized_codeset) + 1 : 0)
+				  + (((mask & XPG_MODIFIER) != 0
+				      || (mask & CEN_AUDIENCE) != 0)
+				     ? strlen (modifier) + 1 : 0)
+				  + ((mask & CEN_SPECIAL) != 0
+				     ? strlen (special) + 1 : 0)
+				  + (((mask & CEN_SPONSOR) != 0
+				      || (mask & CEN_REVISION) != 0)
+				     ? (1 + ((mask & CEN_SPONSOR) != 0
+					     ? strlen (sponsor) + 1 : 0)
+					+ ((mask & CEN_REVISION) != 0
+					   ? strlen (revision) + 1 : 0)) : 0)
+				  + 1 + strlen (filename) + 1);
+
+  if (abs_filename == NULL)
+    return NULL;
+
+  retval = NULL;
+  last = NULL;
+
+  /* Construct file name.  */
+  memcpy (abs_filename, dirlist, dirlist_len);
+  __argz_stringify (abs_filename, dirlist_len, ':');
+  cp = abs_filename + (dirlist_len - 1);
+  *cp++ = '/';
+  cp = stpcpy (cp, language);
+
+  if ((mask & TERRITORY) != 0)
+    {
+      *cp++ = '_';
+      cp = stpcpy (cp, territory);
+    }
+  if ((mask & XPG_CODESET) != 0)
+    {
+      *cp++ = '.';
+      cp = stpcpy (cp, codeset);
+    }
+  if ((mask & XPG_NORM_CODESET) != 0)
+    {
+      *cp++ = '.';
+      cp = stpcpy (cp, normalized_codeset);
+    }
+  if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
+    {
+      /* This component can be part of both syntaces but has different
+	 leading characters.  For CEN we use `+', else `@'.  */
+      *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
+      cp = stpcpy (cp, modifier);
+    }
+  if ((mask & CEN_SPECIAL) != 0)
+    {
+      *cp++ = '+';
+      cp = stpcpy (cp, special);
+    }
+  if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
+    {
+      *cp++ = ',';
+      if ((mask & CEN_SPONSOR) != 0)
+	cp = stpcpy (cp, sponsor);
+      if ((mask & CEN_REVISION) != 0)
+	{
+	  *cp++ = '_';
+	  cp = stpcpy (cp, revision);
+	}
+    }
+
+  *cp++ = '/';
+  stpcpy (cp, filename);
+
+  /* Look in list of already loaded domains whether it is already
+     available.  */
+  last = NULL;
+  for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
+    if (retval->filename != NULL)
+      {
+	int compare = strcmp (retval->filename, abs_filename);
+	if (compare == 0)
+	  /* We found it!  */
+	  break;
+	if (compare < 0)
+	  {
+	    /* It's not in the list.  */
+	    retval = NULL;
+	    break;
+	  }
+
+	last = retval;
+      }
+
+  if (retval != NULL || do_allocate == 0)
+    {
+      free (abs_filename);
+      return retval;
+    }
+
+  retval = (struct loaded_l10nfile *)
+    malloc (sizeof (*retval) + (__argz_count (dirlist, dirlist_len)
+				* (1 << pop (mask))
+				* sizeof (struct loaded_l10nfile *)));
+  if (retval == NULL)
+    return NULL;
+
+  retval->filename = abs_filename;
+  retval->decided = (__argz_count (dirlist, dirlist_len) != 1
+		     || ((mask & XPG_CODESET) != 0
+			 && (mask & XPG_NORM_CODESET) != 0));
+  retval->data = NULL;
+
+  if (last == NULL)
+    {
+      retval->next = *l10nfile_list;
+      *l10nfile_list = retval;
+    }
+  else
+    {
+      retval->next = last->next;
+      last->next = retval;
+    }
+
+  entries = 0;
+  /* If the DIRLIST is a real list the RETVAL entry corresponds not to
+     a real file.  So we have to use the DIRLIST separation mechanism
+     of the inner loop.  */
+  cnt = __argz_count (dirlist, dirlist_len) == 1 ? mask - 1 : mask;
+  for (; cnt >= 0; --cnt)
+    if ((cnt & ~mask) == 0
+	&& ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
+	&& ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
+      {
+	/* Iterate over all elements of the DIRLIST.  */
+	char *dir = NULL;
+
+	while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
+	       != NULL)
+	  retval->successor[entries++]
+	    = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1, cnt,
+				  language, territory, codeset,
+				  normalized_codeset, modifier, special,
+				  sponsor, revision, filename, 1);
+      }
+  retval->successor[entries] = NULL;
+
+  return retval;
+}
+
+/* Normalize codeset name.  There is no standard for the codeset
+   names.  Normalization allows the user to use any of the common
+   names.  */
+const char *
+_nl_normalize_codeset (codeset, name_len)
+     const unsigned char *codeset;
+     size_t name_len;
+{
+  int len = 0;
+  int only_digit = 1;
+  char *retval;
+  char *wp;
+  size_t cnt;
+
+  for (cnt = 0; cnt < name_len; ++cnt)
+    if (isalnum (codeset[cnt]))
+      {
+	++len;
+
+	if (isalpha (codeset[cnt]))
+	  only_digit = 0;
+      }
+
+  retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
+
+  if (retval != NULL)
+    {
+      if (only_digit)
+	wp = stpcpy (retval, "iso");
+      else
+	wp = retval;
+
+      for (cnt = 0; cnt < name_len; ++cnt)
+	if (isalpha (codeset[cnt]))
+	  *wp++ = tolower (codeset[cnt]);
+	else if (isdigit (codeset[cnt]))
+	  *wp++ = codeset[cnt];
+
+      *wp = '\0';
+    }
+
+  return (const char *) retval;
+}
+
+
+/* @@ begin of epilog @@ */
+
+/* We don't want libintl.a to depend on any other library.  So we
+   avoid the non-standard function stpcpy.  In GNU C Library this
+   function is available, though.  Also allow the symbol HAVE_STPCPY
+   to be defined.  */
+#if !_LIBC && !HAVE_STPCPY
+static char *
+stpcpy (dest, src)
+     char *dest;
+     const char *src;
+{
+  while ((*dest++ = *src++) != '\0')
+    /* Do nothing. */ ;
+  return dest - 1;
+}
+#endif