/* 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
#include <stdbool.h>
+#include <ctype.h>
#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
#include <stddef.h>
#include <stdio.h>
-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#if HAVE_STRING_H
-# include <string.h>
-#endif
-#if HAVE_STRINGS_H
-# include <strings.h>
-#endif
-#if HAVE_INTTYPES_H
-# include <inttypes.h>
-#else
-# if HAVE_STDINT_H
-# include <stdint.h>
-# endif
-#endif
+#include <stdlib.h>
+#include <string.h>
#include "exclude.h"
#include "fnmatch.h"
#include "unlocked-io.h"
#include "xalloc.h"
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
+#if STDC_HEADERS || (! defined isascii && ! HAVE_ISASCII)
+# define IN_CTYPE_DOMAIN(c) true
+#else
+# define IN_CTYPE_DOMAIN(c) isascii (c)
#endif
+static inline bool
+is_space (unsigned char c)
+{
+ return IN_CTYPE_DOMAIN (c) && isspace (c);
+}
+
/* Verify a requirement at compile-time (unlike assert, which is runtime). */
#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
struct exclude *
new_exclude (void)
{
- struct exclude *ex = xmalloc (sizeof *ex);
- ex->exclude_count = 0;
- ex->exclude_alloc = (1 << 6); /* This must be a power of 2. */
- 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. */
{
struct patopts *patopts;
- if (ex->exclude_alloc <= ex->exclude_count)
- {
- size_t s = 2 * ex->exclude_alloc;
- if (! (0 < s && s <= SIZE_MAX / sizeof ex->exclude[0]))
- xalloc_die ();
- ex->exclude_alloc = s;
- ex->exclude = xrealloc (ex->exclude, s * sizeof ex->exclude[0]);
- }
+ 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;
}
/* Use ADD_FUNC to append to EX the patterns in FILENAME, each with
- OPTIONS. LINE_END terminates each pattern in the file. Return -1
- on failure, 0 on success. */
+ OPTIONS. LINE_END terminates each pattern in the file. If
+ LINE_END is a space character, ignore trailing spaces and empty
+ lines in FILE. Return -1 on failure, 0 on success. */
int
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 = (1 << 10); /* This must be a power of two. */
+ size_t buf_alloc = 0;
size_t buf_count = 0;
int c;
int e = 0;
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_alloc *= 2;
- if (! buf_alloc)
- xalloc_die ();
- buf = xrealloc (buf, buf_alloc);
- }
+ buf = x2realloc (buf, &buf_alloc);
+ buf[buf_count++] = c;
}
if (ferror (in))
e = errno;
buf = xrealloc (buf, buf_count + 1);
+ buf[buf_count] = line_end;
+ lim = buf + buf_count + ! (buf_count == 0 || buf[buf_count - 1] == line_end);
+ pattern = buf;
- for (pattern = p = buf, lim = buf + buf_count; p <= lim; p++)
- if (p < lim ? *p == line_end : buf < p && p[-1])
+ for (p = buf; p < lim; p++)
+ if (*p == line_end)
{
- *p = '\0';
+ char *pattern_end = p;
+
+ if (is_space (line_end))
+ {
+ for (; ; pattern_end--)
+ if (pattern_end == pattern)
+ goto next_pattern;
+ else if (! is_space (pattern_end[-1]))
+ break;
+ }
+
+ *pattern_end = '\0';
(*add_func) (ex, pattern, options);
+
+ next_pattern:
pattern = p + 1;
}