Move to gawk-3.1.1.

1 files changed, 83 insertions, 102 deletions

diff --git a/intl/localealias.c b/intl/localealias.c
index a6f054a9..456e41e3 100644
--- a/intl/localealias.c
+++ b/intl/localealias.c
@@ -1,20 +1,27 @@
 /* Handle aliases for locale names.
-   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
-   Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
+   Copyright (C) 1995-1999, 2000, 2001 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)
+   This program 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, 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.  */
+   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 this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+   USA.  */
+
+/* Tell glibc's <string.h> to provide a prototype for mempcpy().
+   This must come before <config.h> because <config.h> may include
+   <features.h>, and once <features.h> has been included, it's too late.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>
@@ -22,6 +29,9 @@
 
 #include <ctype.h>
 #include <stdio.h>
+#if defined _LIBC || defined HAVE___FSETLOCKING
+# include <stdio_ext.h>
+#endif
 #include <sys/types.h>
 
 #ifdef __GNUC__
@@ -41,35 +51,9 @@ char *alloca ();
 # endif
 #endif
 
-#if defined STDC_HEADERS || defined _LIBC
-# include <stdlib.h>
-#else
-char *getenv ();
-# ifdef HAVE_MALLOC_H
-#  include <malloc.h>
-# else
-void free ();
-# endif
-#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
+#include <stdlib.h>
+#include <string.h>
 
-#include "gettext.h"
 #include "gettextP.h"
 
 /* @@ end of prolog @@ */
@@ -84,6 +68,7 @@ void free ();
 #  define mempcpy __mempcpy
 # endif
 # define HAVE_MEMPCPY	1
+# define HAVE___FSETLOCKING	1
 
 /* We need locking here since we can be called from different places.  */
 # include <bits/libc-lock.h>
@@ -95,40 +80,23 @@ __libc_lock_define_initialized (static, lock);
 # define internal_function
 #endif
 
-/* For those loosing systems which don't have `alloca' we have to add
+/* Some optimizations for glibc.  */
+#ifdef _LIBC
+# define FEOF(fp)		feof_unlocked (fp)
+# define FGETS(buf, n, fp)	fgets_unlocked (buf, n, fp)
+#else
+# define FEOF(fp)		feof (fp)
+# define FGETS(buf, n, fp)	fgets (buf, n, fp)
+#endif
+
+/* For those losing systems which don't have `alloca' we have to add
    some additional code emulating it.  */
 #ifdef HAVE_ALLOCA
-/* Nothing has to be done.  */
-# define ADD_BLOCK(list, address) /* nothing */
-# define FREE_BLOCKS(list) /* nothing */
+# define freea(p) /* nothing */
 #else
-struct block_list
-{
-  void *address;
-  struct block_list *next;
-};
-# define ADD_BLOCK(list, addr)						      \
-  do {									      \
-    struct block_list *newp = (struct block_list *) malloc (sizeof (*newp));  \
-    /* If we cannot get a free block we cannot add the new element to	      \
-       the list.  */							      \
-    if (newp != NULL) {							      \
-      newp->address = (addr);						      \
-      newp->next = (list);						      \
-      (list) = newp;							      \
-    }									      \
-  } while (0)
-# define FREE_BLOCKS(list)						      \
-  do {									      \
-    while (list != NULL) {						      \
-      struct block_list *old = list;					      \
-      list = list->next;						      \
-      free (old);							      \
-    }									      \
-  } while (0)
-# undef alloca
-# define alloca(size) (malloc (size))
-#endif	/* have alloca */
+# define alloca(n) malloc (n)
+# define freea(p) free (p)
+#endif
 
 #if defined _LIBC_REENTRANT || defined HAVE_FGETS_UNLOCKED
 # undef fgets
@@ -147,18 +115,18 @@ struct alias_map
 };
 
 
-static char *string_space = NULL;
-static size_t string_space_act = 0;
-static size_t string_space_max = 0;
+static char *string_space;
+static size_t string_space_act;
+static size_t string_space_max;
 static struct alias_map *map;
-static size_t nmap = 0;
-static size_t maxmap = 0;
+static size_t nmap;
+static size_t maxmap;
 
 
 /* Prototypes for local functions.  */
 static size_t read_alias_file PARAMS ((const char *fname, int fname_len))
      internal_function;
-static void extend_alias_table PARAMS ((void));
+static int extend_alias_table PARAMS ((void));
 static int alias_compare PARAMS ((const struct alias_map *map1,
 				  const struct alias_map *map2));
 
@@ -167,7 +135,7 @@ const char *
 _nl_expand_alias (name)
     const char *name;
 {
-  static const char *locale_alias_path = LOCALE_ALIAS_PATH;
+  static const char *locale_alias_path;
   struct alias_map *retval;
   const char *result = NULL;
   size_t added;
@@ -176,6 +144,9 @@ _nl_expand_alias (name)
   __libc_lock_lock (lock);
 #endif
 
+  if (locale_alias_path == NULL)
+    locale_alias_path = LOCALE_ALIAS_PATH;
+
   do
     {
       struct alias_map item;
@@ -204,11 +175,12 @@ _nl_expand_alias (name)
 	{
 	  const char *start;
 
-	  while (locale_alias_path[0] == ':')
+	  while (locale_alias_path[0] == PATH_SEPARATOR)
 	    ++locale_alias_path;
 	  start = locale_alias_path;
 
-	  while (locale_alias_path[0] != '\0' && locale_alias_path[0] != ':')
+	  while (locale_alias_path[0] != '\0'
+		 && locale_alias_path[0] != PATH_SEPARATOR)
 	    ++locale_alias_path;
 
 	  if (start < locale_alias_path)
@@ -231,16 +203,12 @@ read_alias_file (fname, fname_len)
      const char *fname;
      int fname_len;
 {
-#ifndef HAVE_ALLOCA
-  struct block_list *block_list = NULL;
-#endif
   FILE *fp;
   char *full_fname;
   size_t added;
   static const char aliasfile[] = "/locale.alias";
 
   full_fname = (char *) alloca (fname_len + sizeof aliasfile);
-  ADD_BLOCK (block_list, full_fname);
 #ifdef HAVE_MEMPCPY
   mempcpy (mempcpy (full_fname, fname, fname_len),
 	   aliasfile, sizeof aliasfile);
@@ -250,14 +218,17 @@ read_alias_file (fname, fname_len)
 #endif
 
   fp = fopen (full_fname, "r");
+  freea (full_fname);
   if (fp == NULL)
-    {
-      FREE_BLOCKS (block_list);
-      return 0;
-    }
+    return 0;
+
+#ifdef HAVE___FSETLOCKING
+  /* No threads present.  */
+  __fsetlocking (fp, FSETLOCKING_BYCALLER);
+#endif
 
   added = 0;
-  while (!feof (fp))
+  while (!FEOF (fp))
     {
       /* It is a reasonable approach to use a fix buffer here because
 	 a) we are only interested in the first two fields
@@ -269,7 +240,7 @@ read_alias_file (fname, fname_len)
       char *value;
       char *cp;
 
-      if (fgets (buf, sizeof buf, fp) == NULL)
+      if (FGETS (buf, sizeof buf, fp) == NULL)
 	/* EOF reached.  */
 	break;
 
@@ -279,7 +250,7 @@ read_alias_file (fname, fname_len)
 	{
 	  char altbuf[BUFSIZ];
 	  do
-	    if (fgets (altbuf, sizeof altbuf, fp) == NULL)
+	    if (FGETS (altbuf, sizeof altbuf, fp) == NULL)
 	      /* Make sure the inner loop will be left.  The outer loop
 		 will exit at the `feof' test.  */
 	      break;
@@ -288,21 +259,21 @@ read_alias_file (fname, fname_len)
 
       cp = buf;
       /* Ignore leading white space.  */
-      while (isspace (cp[0]))
+      while (isspace ((unsigned char) cp[0]))
 	++cp;
 
       /* A leading '#' signals a comment line.  */
       if (cp[0] != '\0' && cp[0] != '#')
 	{
 	  alias = cp++;
-	  while (cp[0] != '\0' && !isspace (cp[0]))
+	  while (cp[0] != '\0' && !isspace ((unsigned char) cp[0]))
 	    ++cp;
 	  /* Terminate alias name.  */
 	  if (cp[0] != '\0')
 	    *cp++ = '\0';
 
 	  /* Now look for the beginning of the value.  */
-	  while (isspace (cp[0]))
+	  while (isspace ((unsigned char) cp[0]))
 	    ++cp;
 
 	  if (cp[0] != '\0')
@@ -311,7 +282,7 @@ read_alias_file (fname, fname_len)
 	      size_t value_len;
 
 	      value = cp++;
-	      while (cp[0] != '\0' && !isspace (cp[0]))
+	      while (cp[0] != '\0' && !isspace ((unsigned char) cp[0]))
 		++cp;
 	      /* Terminate value.  */
 	      if (cp[0] == '\n')
@@ -326,7 +297,8 @@ read_alias_file (fname, fname_len)
 		*cp++ = '\0';
 
 	      if (nmap >= maxmap)
-		extend_alias_table ();
+		if (__builtin_expect (extend_alias_table (), 0))
+		  return added;
 
 	      alias_len = strlen (alias) + 1;
 	      value_len = strlen (value) + 1;
@@ -339,19 +311,28 @@ read_alias_file (fname, fname_len)
 					? alias_len + value_len : 1024));
 		  char *new_pool = (char *) realloc (string_space, new_size);
 		  if (new_pool == NULL)
+		    return added;
+
+		  if (__builtin_expect (string_space != new_pool, 0))
 		    {
-		      FREE_BLOCKS (block_list);
-		      return added;
+		      size_t i;
+
+		      for (i = 0; i < nmap; i++)
+			{
+			  map[i].alias += new_pool - string_space;
+			  map[i].value += new_pool - string_space;
+			}
 		    }
+
 		  string_space = new_pool;
 		  string_space_max = new_size;
 		}
 
-	      map[nmap].alias = (char *) memcpy (&string_space[string_space_act],
+	      map[nmap].alias = memcpy (&string_space[string_space_act],
 					alias, alias_len);
 	      string_space_act += alias_len;
 
-	      map[nmap].value = (char *) memcpy (&string_space[string_space_act],
+	      map[nmap].value = memcpy (&string_space[string_space_act],
 					value, value_len);
 	      string_space_act += value_len;
 
@@ -369,12 +350,11 @@ read_alias_file (fname, fname_len)
     qsort (map, nmap, sizeof (struct alias_map),
 	   (int (*) PARAMS ((const void *, const void *))) alias_compare);
 
-  FREE_BLOCKS (block_list);
   return added;
 }
 
 
-static void
+static int
 extend_alias_table ()
 {
   size_t new_size;
@@ -385,10 +365,11 @@ extend_alias_table ()
 						* sizeof (struct alias_map)));
   if (new_map == NULL)
     /* Simply don't extend: we don't have any more core.  */
-    return;
+    return -1;
 
   map = new_map;
   maxmap = new_size;
+  return 0;
 }