| /* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 */ |
| |
| #include "clib.h" |
| |
| #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 (); |
| typedef char *CFunction (); |
| #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 (zero_mem) && defined (HAVE_MEMSET) |
| # define zero_mem(mem, length) memset (mem, 0, length) |
| #endif /* !zero_mem && HAVE_MEMSET */ |
| |
| #if !defined (zero_mem) && defined (HAVE_BZERO) |
| # define zero_mem(mem, length) bzero (mem, length) |
| #endif /* !zero_mem && HAVE_BZERO */ |
| |
| #if !defined (zero_mem) |
| # define zero_mem(mem, length) \ |
| do { \ |
| register int zi; \ |
| register unsigned char *place; \ |
| \ |
| place = (unsigned char *)mem; \ |
| for (zi = 0; zi < length; zi++) \ |
| place[zi] = 0; \ |
| } while (0) |
| #endif /* !zero_mem */ |
| |
| #endif /* !_GENERAL_H_ */ |