1 files changed, 94 insertions, 0 deletions
diff --git a/texinfo/info/general.h b/texinfo/info/general.h
new file mode 100644
index 00000000000..4b97dc8d8da
--- /dev/null
+++ b/texinfo/info/general.h
@@ -0,0 +1,94 @@
+/* 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_ */