view netinstall/mkdir.cc @ 4502:8748a3f7ceb4

Handle varalias chains, custom variables in #'user-variable-p. src/ChangeLog addition: 2008-08-23 Aidan Kehoe <kehoea@parhasard.net> * eval.c (Fuser_variable_p): Moved to symbols.c * symbols.c (Fcustom_variable_p): Moved here from custom.el. (user_variable_alias_check_fun): Mapper function used in `user-variable-p'. (Fuser_variable_p): Moved here from eval.c, to allow it to examine the variable alias chain. Expanded to check each entry in the variable alias chain for signs of being a user variable; documentation updated, noting the differences between GNU's behaviour and ours (ours is a little more sensible) (map_varalias_chain): New. Given a C function, call it at least once for each symbol in a symbol's varalias chain, signalling an error if there's a cycle, and returning immediately if the function returns something other than Qzero. (Fdefvaralias): Correct the use of the word "alias" in the docstring and in the argument name. Motivate this in a comment. Add support for a DOCSTRING argument, something GNU has too, and document this * gc.c (vars_of_gc): Start the docstring of `garbage-collection-messages' with an asterisk, to indicate that it's a user variable. lisp/ChangeLog addition: 2008-08-23 Aidan Kehoe <kehoea@parhasard.net> * custom.el: Move #'custom-variable-p to C, since it's now called from #'user-variable-p.
author Aidan Kehoe <kehoea@parhasard.net>
date Sat, 23 Aug 2008 16:38:51 +0200
parents 3078fd1074e8
children
line wrap: on
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/*
 * Copyright (c) 2000, Red Hat, 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 of the License, or
 *     (at your option) any later version.
 *
 *     A copy of the GNU General Public License can be found at
 *     http://www.gnu.org/
 *
 * Written by DJ Delorie <dj@cygnus.com>
 *
 */

/* see mkdir.h */

#include "win32.h"
#include <stdio.h>
#include "mkdir.h"

int
mkdir_p (int isadir, char *path)
{
  char saved_char, *slash = 0;
  char *c;
  DWORD d, gse;

  d = GetFileAttributes (path);
  if (d != 0xffffffff && d & FILE_ATTRIBUTE_DIRECTORY)
    return 0;

  if (isadir)
    {
      if (CreateDirectory (path, 0))
	return 0;
      gse = GetLastError ();
      if (gse != ERROR_PATH_NOT_FOUND && gse != ERROR_FILE_NOT_FOUND)
	{
	  if (gse == ERROR_ALREADY_EXISTS)
	    {
	      fprintf (stderr, "warning: deleting \"%s\" so I can make a directory there\n",
		       path);
	      if (DeleteFileA (path))
		return mkdir_p (isadir, path);
	    }
	  return 1;
	}
    }

  for (c=path; *c; c++)
    {
      if (*c == ':')
	slash = 0;
      if (*c == '/' || *c == '\\')
	slash = c;
    }

  if (!slash)
    return 0;

  saved_char = *slash;
  *slash = 0;
  if (mkdir_p (1, path))
    {
      *slash = saved_char;
      return 1;
    }
  *slash = saved_char;

  if (!isadir)
    return 0;

  return mkdir_p (isadir, path);
}