Remove from CVS, since the bootstrap script generates them automatically.

1 files changed, 0 insertions, 361 deletions

diff --git a/lib/backupfile.c b/lib/backupfile.c
deleted file mode 100644
index c24325d8f..000000000
--- a/lib/backupfile.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/* backupfile.c -- make Emacs style backup file names
-
-   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 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)
-   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; see the file COPYING.
-   If not, write to the Free Software Foundation,
-   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Paul Eggert and David MacKenzie.
-   Some algorithms adapted from GNU Emacs.  */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include "backupfile.h"
-
-#include "argmatch.h"
-#include "dirname.h"
-#include "xalloc.h"
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <limits.h>
-
-#include <unistd.h>
-
-#include <dirent.h>
-#ifndef _D_EXACT_NAMLEN
-# define _D_EXACT_NAMLEN(dp) strlen ((dp)->d_name)
-#endif
-#if D_INO_IN_DIRENT
-# define REAL_DIR_ENTRY(dp) ((dp)->d_ino != 0)
-#else
-# define REAL_DIR_ENTRY(dp) 1
-#endif
-
-#if ! (HAVE_PATHCONF && defined _PC_NAME_MAX)
-# define pathconf(file, option) (errno = -1)
-#endif
-
-#ifndef _POSIX_NAME_MAX
-# define _POSIX_NAME_MAX 14
-#endif
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
-#if defined _XOPEN_NAME_MAX
-# define NAME_MAX_MINIMUM _XOPEN_NAME_MAX
-#else
-# define NAME_MAX_MINIMUM _POSIX_NAME_MAX
-#endif
-
-#ifndef HAVE_DOS_FILE_NAMES
-# define HAVE_DOS_FILE_NAMES 0
-#endif
-#ifndef HAVE_LONG_FILE_NAMES
-# define HAVE_LONG_FILE_NAMES 0
-#endif
-
-/* ISDIGIT differs from isdigit, as follows:
-   - Its arg may be any int or unsigned int; it need not be an unsigned char
-     or EOF.
-   - It's typically faster.
-   POSIX says that only '0' through '9' are digits.  Prefer ISDIGIT to
-   ISDIGIT unless it's important to use the locale's definition
-   of `digit' even when the host does not conform to POSIX.  */
-#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
-
-/* The extension added to file names to produce a simple (as opposed
-   to numbered) backup file name. */
-char const *simple_backup_suffix = "~";
-
-
-/* If FILE (which was of length FILELEN before an extension was
-   appended to it) is too long, replace the extension with the single
-   char E.  If the result is still too long, remove the char just
-   before E.  */
-
-static void
-check_extension (char *file, size_t filelen, char e)
-{
-  char *base = last_component (file);
-  size_t baselen = base_len (base);
-  size_t baselen_max = HAVE_LONG_FILE_NAMES ? 255 : NAME_MAX_MINIMUM;
-
-  if (HAVE_DOS_FILE_NAMES || NAME_MAX_MINIMUM < baselen)
-    {
-      /* The new base name is long enough to require a pathconf check.  */
-      long name_max;
-
-      /* Temporarily modify the buffer into its parent directory name,
-	 invoke pathconf on the directory, and then restore the buffer.  */
-      char tmp[sizeof "."];
-      memcpy (tmp, base, sizeof ".");
-      strcpy (base, ".");
-      errno = 0;
-      name_max = pathconf (file, _PC_NAME_MAX);
-      if (0 <= name_max || errno == 0)
-	{
-	  long size = baselen_max = name_max;
-	  if (name_max != size)
-	    baselen_max = SIZE_MAX;
-	}
-      memcpy (base, tmp, sizeof ".");
-    }
-
-  if (HAVE_DOS_FILE_NAMES && baselen_max <= 12)
-    {
-      /* Live within DOS's 8.3 limit.  */
-      char *dot = strchr (base, '.');
-      if (!dot)
-	baselen_max = 8;
-      else
-	{
-	  char const *second_dot = strchr (dot + 1, '.');
-	  baselen_max = (second_dot
-			 ? second_dot - base
-			 : dot + 1 - base + 3);
-	}
-    }
-
-  if (baselen_max < baselen)
-    {
-      baselen = file + filelen - base;
-      if (baselen_max <= baselen)
-	baselen = baselen_max - 1;
-      base[baselen] = e;
-      base[baselen + 1] = '\0';
-    }
-}
-
-/* Returned values for NUMBERED_BACKUP.  */
-
-enum numbered_backup_result
-  {
-    /* The new backup name is the same length as an existing backup
-       name, so it's valid for that directory.  */
-    BACKUP_IS_SAME_LENGTH,
-
-    /* Some backup names already exist, but the returned name is longer
-       than any of them, and its length should be checked.  */
-    BACKUP_IS_LONGER,
-
-    /* There are no existing backup names.  The new name's length
-       should be checked.  */
-    BACKUP_IS_NEW
-  };
-
-/* *BUFFER contains a file name.  Store into *BUFFER the next backup
-   name for the named file, with a version number greater than all the
-   existing numbered backups.  Reallocate *BUFFER as necessary; its
-   initial allocated size is BUFFER_SIZE, which must be at least 4
-   bytes longer than the file name to make room for the initially
-   appended ".~1".  FILELEN is the length of the original file name.
-   The returned value indicates what kind of backup was found.  If an
-   I/O or other read error occurs, use the highest backup number that
-   was found.  */
-
-static enum numbered_backup_result
-numbered_backup (char **buffer, size_t buffer_size, size_t filelen)
-{
-  enum numbered_backup_result result = BACKUP_IS_NEW;
-  DIR *dirp;
-  struct dirent *dp;
-  char *buf = *buffer;
-  size_t versionlenmax = 1;
-  char *base = last_component (buf);
-  size_t base_offset = base - buf;
-  size_t baselen = base_len (base);
-
-  /* Temporarily modify the buffer into its parent directory name,
-     open the directory, and then restore the buffer.  */
-  char tmp[sizeof "."];
-  memcpy (tmp, base, sizeof ".");
-  strcpy (base, ".");
-  dirp = opendir (buf);
-  memcpy (base, tmp, sizeof ".");
-  strcpy (base + baselen, ".~1~");
-
-  if (!dirp)
-    return result;
-
-  while ((dp = readdir (dirp)) != NULL)
-    {
-      char const *p;
-      char *q;
-      bool all_9s;
-      size_t versionlen;
-      size_t new_buflen;
-
-      if (! REAL_DIR_ENTRY (dp) || _D_EXACT_NAMLEN (dp) < baselen + 4)
-	continue;
-
-      if (memcmp (buf + base_offset, dp->d_name, baselen + 2) != 0)
-	continue;
-
-      p = dp->d_name + baselen + 2;
-
-      /* Check whether this file has a version number and if so,
-	 whether it is larger.  Use string operations rather than
-	 integer arithmetic, to avoid problems with integer overflow.  */
-
-      if (! ('1' <= *p && *p <= '9'))
-	continue;
-      all_9s = (*p == '9');
-      for (versionlen = 1; ISDIGIT (p[versionlen]); versionlen++)
-	all_9s &= (p[versionlen] == '9');
-
-      if (! (p[versionlen] == '~' && !p[versionlen + 1]
-	     && (versionlenmax < versionlen
-		 || (versionlenmax == versionlen
-		     && memcmp (buf + filelen + 2, p, versionlen) <= 0))))
-	continue;
-
-      /* This directory has the largest version number seen so far.
-	 Append this highest numbered extension to the file name,
-	 prepending '0' to the number if it is all 9s.  */
-
-      versionlenmax = all_9s + versionlen;
-      result = (all_9s ? BACKUP_IS_LONGER : BACKUP_IS_SAME_LENGTH);
-      new_buflen = filelen + 2 + versionlenmax + 1;
-      if (buffer_size <= new_buflen)
-	{
-	  buf = xnrealloc (buf, 2, new_buflen);
-	  buffer_size = new_buflen * 2;
-	}
-      q = buf + filelen;
-      *q++ = '.';
-      *q++ = '~';
-      *q = '0';
-      q += all_9s;
-      memcpy (q, p, versionlen + 2);
-
-      /* Add 1 to the version number.  */
-
-      q += versionlen;
-      while (*--q == '9')
-	*q = '0';
-      ++*q;
-    }
-
-  closedir (dirp);
-  *buffer = buf;
-  return result;
-}
-
-/* Return the name of the new backup file for the existing file FILE,
-   allocated with malloc.  Report an error and fail if out of memory.
-   Do not call this function if backup_type == no_backups.  */
-
-char *
-find_backup_file_name (char const *file, enum backup_type backup_type)
-{
-  size_t filelen = strlen (file);
-  char *s;
-  size_t ssize;
-  bool simple = true;
-
-  /* Allow room for simple or ".~N~" backups.  The guess must be at
-     least sizeof ".~1~", but otherwise will be adjusted as needed.  */
-  size_t simple_backup_suffix_size = strlen (simple_backup_suffix) + 1;
-  size_t backup_suffix_size_guess = simple_backup_suffix_size;
-  enum { GUESS = sizeof ".~12345~" };
-  if (backup_suffix_size_guess < GUESS)
-    backup_suffix_size_guess = GUESS;
-
-  ssize = filelen + backup_suffix_size_guess + 1;
-  s = xmalloc (ssize);
-  memcpy (s, file, filelen + 1);
-
-  if (backup_type != simple_backups)
-    switch (numbered_backup (&s, ssize, filelen))
-      {
-      case BACKUP_IS_SAME_LENGTH:
-	return s;
-
-      case BACKUP_IS_LONGER:
-	simple = false;
-	break;
-
-      case BACKUP_IS_NEW:
-	simple = (backup_type == numbered_existing_backups);
-	break;
-      }
-
-  if (simple)
-    memcpy (s + filelen, simple_backup_suffix, simple_backup_suffix_size);
-  check_extension (s, filelen, '~');
-  return s;
-}
-
-static char const * const backup_args[] =
-{
-  /* In a series of synonyms, present the most meaningful first, so
-     that argmatch_valid be more readable. */
-  "none", "off",
-  "simple", "never",
-  "existing", "nil",
-  "numbered", "t",
-  NULL
-};
-
-static const enum backup_type backup_types[] =
-{
-  no_backups, no_backups,
-  simple_backups, simple_backups,
-  numbered_existing_backups, numbered_existing_backups,
-  numbered_backups, numbered_backups
-};
-
-/* Ensure that these two vectors have the same number of elements,
-   not counting the final NULL in the first one.  */
-ARGMATCH_VERIFY (backup_args, backup_types);
-
-/* Return the type of backup specified by VERSION.
-   If VERSION is NULL or the empty string, return numbered_existing_backups.
-   If VERSION is invalid or ambiguous, fail with a diagnostic appropriate
-   for the specified CONTEXT.  Unambiguous abbreviations are accepted.  */
-
-enum backup_type
-get_version (char const *context, char const *version)
-{
-  if (version == 0 || *version == 0)
-    return numbered_existing_backups;
-  else
-    return XARGMATCH (context, version, backup_args, backup_types);
-}
-
-
-/* Return the type of backup specified by VERSION.
-   If VERSION is NULL, use the value of the envvar VERSION_CONTROL.
-   If the specified string is invalid or ambiguous, fail with a diagnostic
-   appropriate for the specified CONTEXT.
-   Unambiguous abbreviations are accepted.  */
-
-enum backup_type
-xget_version (char const *context, char const *version)
-{
-  if (version && *version)
-    return get_version (context, version);
-  else
-    return get_version ("$VERSION_CONTROL", getenv ("VERSION_CONTROL"));
-}