xref: /freebsd-10.1-release/contrib/ncurses/ncurses/trace/trace_tries.c

/****************************************************************************
 * Copyright (c) 1999,2000 Free Software Foundation, Inc.                   *
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/****************************************************************************
 *  Author: Thomas E. Dickey <dickey@clark.net> 1999                        *
 ****************************************************************************/
/*
 *	trace_tries.c - Tracing/Debugging buffers (keycode tries-trees)
 */

#include <curses.priv.h>

MODULE_ID("$Id: trace_tries.c,v 1.8 2000/12/10 03:03:51 tom Exp $")

#ifdef TRACE
static unsigned char *buffer;
static unsigned len;

static void
recur_tries(struct tries *tree, unsigned level)
{
    if (level > len)
	buffer = (unsigned char *) realloc(buffer, len = (level + 1) * 4);

    while (tree != 0) {
	if ((buffer[level] = tree->ch) == 0)
	    buffer[level] = 128;
	buffer[level + 1] = 0;
	if (tree->value != 0) {
	    _tracef("%5d: %s (%s)", tree->value,
		    _nc_visbuf((char *) buffer), keyname(tree->value));
	}
	if (tree->child)
	    recur_tries(tree->child, level + 1);
	tree = tree->sibling;
    }
}

NCURSES_EXPORT(void)
_nc_trace_tries(struct tries *tree)
{
    buffer = typeMalloc(unsigned char, len = 80);
    _tracef("BEGIN tries %p", tree);
    recur_tries(tree, 0);
    _tracef(". . . tries %p", tree);
    free(buffer);
}

#else
NCURSES_EXPORT(void)
_nc_trace_tries(struct tries *tree GCC_UNUSED)
{
}
#endif