82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* general.h -- Some generally useful defines. */
|
|
|
|
/* This file is part of GNU Info, a program for reading online documentation
|
|
stored in Info format.
|
|
|
|
Copyright (C) 1993 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; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
Written by Brian Fox (bfox@ai.mit.edu). */
|
|
|
|
#if !defined (_GENERAL_H_)
|
|
#define _GENERAL_H_
|
|
|
|
extern void *xmalloc (), *xrealloc ();
|
|
|
|
#if defined (HAVE_UNISTD_H)
|
|
# include <unistd.h>
|
|
#endif /* HAVE_UNISTD_H */
|
|
|
|
#if defined (HAVE_STRING_H)
|
|
# include <string.h>
|
|
#else
|
|
# include <strings.h>
|
|
#endif /* !HAVE_STRING_H */
|
|
|
|
#if !defined (savestring)
|
|
# define savestring(x) (char *)strcpy ((char *)xmalloc (1 + strlen (x)), x)
|
|
#endif /* !savestring */
|
|
|
|
#define info_toupper(x) (islower (x) ? toupper (x) : x)
|
|
#define info_tolower(x) (isupper (x) ? tolower (x) : x)
|
|
|
|
#if !defined (whitespace)
|
|
# define whitespace(c) ((c == ' ') || (c == '\t'))
|
|
#endif /* !whitespace */
|
|
|
|
#if !defined (whitespace_or_newline)
|
|
# define whitespace_or_newline(c) (whitespace (c) || (c == '\n'))
|
|
#endif /* !whitespace_or_newline */
|
|
|
|
#if !defined (__FUNCTION_DEF)
|
|
# define __FUNCTION_DEF
|
|
typedef int Function ();
|
|
typedef void VFunction ();
|
|
#endif /* _FUNCTION_DEF */
|
|
|
|
/* Add POINTER to the list of pointers found in ARRAY. SLOTS is the number
|
|
of slots that have already been allocated. INDEX is the index into the
|
|
array where POINTER should be added. GROW is the number of slots to grow
|
|
ARRAY by, in the case that it needs growing. TYPE is a cast of the type
|
|
of object stored in ARRAY (e.g., NODE_ENTRY *. */
|
|
#define add_pointer_to_array(pointer, idx, array, slots, grow, type) \
|
|
do { \
|
|
if (idx + 2 >= slots) \
|
|
array = (type *)(xrealloc (array, (slots += grow) * sizeof (type))); \
|
|
array[idx++] = (type)pointer; \
|
|
array[idx] = (type)NULL; \
|
|
} while (0)
|
|
|
|
#define maybe_free(x) do { if (x) free (x); } while (0)
|
|
|
|
#if !defined (HAVE_BZERO)
|
|
# define zero_mem(mem, length) memset (mem, 0, length)
|
|
#else
|
|
# define zero_mem(mem, length) bzero (mem, length)
|
|
#endif /* !BZERO_MISSING */
|
|
|
|
#endif /* !_GENERAL_H_ */
|