(MAXSIZE): New macro.

[gnulib.git] / lib / exclude.c

diff --git a/lib/exclude.c b/lib/exclude.c
index cb43326..24146eb 100644 (file)
--- a/lib/exclude.c
+++ b/lib/exclude.c
@@ -1,7 +1,7 @@
 /* exclude.c -- exclude file names
 
-   Copyright (C) 1992, 1993, 1994, 1997, 1999, 2000, 2001, 2002, 2003 Free
-   Software Foundation, Inc.
+   Copyright (C) 1992, 1993, 1994, 1997, 1999, 2000, 2001, 2002, 2003,
+   2004 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
@@ -28,9 +28,6 @@
 
 #include <ctype.h>
 #include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -38,9 +35,12 @@ extern int errno;
 
 #include "exclude.h"
 #include "fnmatch.h"
-#include "unlocked-io.h"
 #include "xalloc.h"
 
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
 #if STDC_HEADERS || (! defined isascii && ! HAVE_ISASCII)
 # define IN_CTYPE_DOMAIN(c) true
 #else
@@ -93,11 +93,7 @@ struct exclude
 struct exclude *
 new_exclude (void)
 {
-  struct exclude *ex = xmalloc (sizeof *ex);
-  ex->exclude_count = 0;
-  ex->exclude_alloc = 60;
-  ex->exclude = xmalloc (ex->exclude_alloc * sizeof ex->exclude[0]);
-  return ex;
+  return xzalloc (sizeof *new_exclude ());
 }
 
 /* Free the storage associated with an exclude list.  */
@@ -188,12 +184,9 @@ add_exclude (struct exclude *ex, char const *pattern, int options)
 {
   struct patopts *patopts;
 
-  if (ex->exclude_alloc <= ex->exclude_count)
-    {
-      ex->exclude = xnrealloc (ex->exclude, ex->exclude_alloc,
-                              2 * sizeof *ex->exclude);
-      ex->exclude_alloc *= 2;
-    }
+  if (ex->exclude_count == ex->exclude_alloc)
+    ex->exclude = x2nrealloc (ex->exclude, &ex->exclude_alloc,
+                             sizeof *ex->exclude);
 
   patopts = &ex->exclude[ex->exclude_count++];
   patopts->pattern = pattern;
@@ -212,11 +205,11 @@ add_exclude_file (void (*add_func) (struct exclude *, char const *, int),
 {
   bool use_stdin = filename[0] == '-' && !filename[1];
   FILE *in;
-  char *buf;
+  char *buf = NULL;
   char *p;
   char const *pattern;
   char const *lim;
-  size_t buf_alloc = 1000;
+  size_t buf_alloc = 0;
   size_t buf_count = 0;
   int c;
   int e = 0;
@@ -226,16 +219,11 @@ add_exclude_file (void (*add_func) (struct exclude *, char const *, int),
   else if (! (in = fopen (filename, "r")))
     return -1;
 
-  buf = xmalloc (buf_alloc);
-
   while ((c = getc (in)) != EOF)
     {
-      buf[buf_count++] = c;
       if (buf_count == buf_alloc)
-       {
-         buf = xnrealloc (buf, buf_alloc, 2);
-         buf_alloc *= 2;
-       }
+       buf = x2realloc (buf, &buf_alloc);
+      buf[buf_count++] = c;
     }
 
   if (ferror (in))