NetBSD/usr.bin/msgc/msg_sys.def

/*	$NetBSD: msg_sys.def,v 1.7 1999/06/23 09:19:33 cgd Exp $	*/

/*
 * Copyright 1997 Piermont Information Systems Inc.
 * All rights reserved.
 *
 * Written by Philip A. Nelson for Piermont Information Systems Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software develooped for the NetBSD Project by
 *      Piermont Information Systems Inc.
 * 4. The name of Piermont Information Systems Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

static WINDOW *msg_win = NULL;
static char *cbuffer;
static size_t cbuffersize;
static int do_echo = 1;


/* Routines */

void msg_beep (void)
{
	fprintf (stderr, "\a");
}

int msg_window(WINDOW *window)
{
	size_t ncbuffersize;
	char *ncbuffer;

	msg_win = window;

	ncbuffersize = getmaxx(window) * getmaxy(window) + 1;
	if (ncbuffersize > cbuffersize) {
		ncbuffer = malloc(ncbuffersize);
		if (ncbuffer == NULL)
			return 1;
		if (cbuffer != NULL)
			free(cbuffer);
		cbuffer = ncbuffer;
		cbuffersize = ncbuffersize;
	}
	return 0;
}

char *msg_string (int msg_no)
{
	return msg_list[msg_no];
}

void msg_clear(void)
{
	wclear (msg_win);
	wrefresh (msg_win);
}

void msg_standout(void)
{
	wstandout(msg_win);
}

void msg_standend(void)
{
	wstandend(msg_win);
}

int msg_vprintf (char *fmt, va_list ap)
{
	int ret;

	ret = vsnprintf (cbuffer, cbuffersize, fmt, ap);
	waddstr (msg_win, cbuffer);
	wrefresh (msg_win);
	return ret;
}

void msg_display(int msg_no, ...)
{
	va_list ap;

	msg_clear();

	va_start(ap, msg_no);
	(void)msg_vprintf (msg_list[msg_no], ap);
	va_end(ap);
}

void msg_display_add(int msg_no, ...)
{
	va_list ap;

	va_start (ap, msg_no);
	(void)msg_vprintf (msg_list[msg_no], ap);
	va_end (ap);
}

int msg_printf (char *fmt, ...)
{
	va_list ap;
	int  res;

	msg_clear();

	va_start (ap, fmt);
	res = msg_vprintf (fmt, ap);
	va_end (ap);
	return res;
}

int msg_printf_add (char *fmt, ...)
{
	va_list ap;
	int  res;

	va_start (ap, fmt);
	res = msg_vprintf (fmt, ap);
	va_end (ap);
	return res;
}


static void msg_vprompt (char *msg, char *def, char *val, int max_chars,
			 va_list ap)
{
	int ch;
	int count = 0;
	int y,x;
	char *ibuf = alloca(max_chars);

	msg_vprintf (msg, ap);
	if (def != NULL && *def) {
		waddstr (msg_win, " [");
		waddstr (msg_win, def);
		waddstr (msg_win, "]");
	}
	waddstr (msg_win, ": ");
	wrefresh (msg_win);

	while ((ch = wgetch(msg_win)) != '\n') {
		if (ch == 0x08 || ch == 0x7f) {  /* bs or del */
			if (count > 0) {
				count--;
				if (do_echo) {
					getyx(msg_win, y, x);
					x--;
					wmove(msg_win, y, x);
					wdelch(msg_win);
				}
			} else
				msg_beep ();
		} else if (ch == 0x15) {	/* ^U; line kill */
			while (count > 0) {
				count--;
				if (do_echo) {
					getyx(msg_win, y, x);
					x--;
					wmove(msg_win, y, x);
					wdelch(msg_win);
				}
			}
		} else if (count < (max_chars - 1) && isprint(ch)) {
			if (do_echo)
				waddch (msg_win, ch);
			ibuf[count++] = ch;
		} else
			msg_beep ();
		if (do_echo)
			wrefresh(msg_win);
	}
	if (do_echo)
		waddch(msg_win, '\n');

	/* copy the appropriate string to the output */
	if (count != 0) {
		ibuf[count] = '\0';
		strcpy(val, ibuf);		/* size known to be OK */
	} else if (def != NULL && val != def) {
		strncpy(val, def, max_chars);
		val[max_chars - 1] = '\0';
	}
}

void msg_prompt_addstr (char *fmt, char *def, char *val, int max_chars, ...)
{
	va_list ap;

	va_start (ap, max_chars);
	msg_vprompt (fmt, def, val, max_chars, ap);
	va_end(ap);
}

void msg_prompt_add (int msg_no, char *def, char *val, int max_chars, ...)
{
	va_list ap;

	va_start (ap, max_chars);
	msg_vprompt (msg_list[msg_no], def, val, max_chars, ap);
	va_end(ap);
}

void msg_prompt_str (char *msg, char *def, char *val, int max_chars, ...)
{
	va_list ap;

	msg_clear();

	va_start (ap, max_chars);
	msg_vprompt (msg, def, val, max_chars, ap);
	va_end (ap);
}

void msg_prompt (int msg_no, char *def, char *val, int max_chars, ...)
{
	va_list ap;

	msg_clear();

	va_start (ap, max_chars);
	msg_vprompt (msg_list[msg_no], def, val, max_chars, ap);
	va_end (ap);
}

void msg_noecho()
{
	do_echo = 0;
}

void msg_echo()
{
	do_echo = 1;
}