/*
 * In this module we implement stdin command handling: 'disc' command
 * for caller-initiated disconnect; 'play' and 'play-stop' commands
 * for RTP output.
 */

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>

static void
play_cmd(args)
	char *args;
{
	char *cp, *filename;
	unsigned frame_len;
	int loop;

	for (cp = args; isspace(*cp); cp++)
		;
	if (!*cp) {
inv_syntax:	fprintf(stderr, "error: play command invalid syntax\n");
		return;
	}
	for (filename = cp; *cp && !isspace(*cp); cp++)
		;
	if (!*cp)
		goto inv_syntax;
	*cp++ = '\0';
	while (isspace(*cp))
		cp++;
	if (!isdigit(*cp))
		goto inv_syntax;
	frame_len = strtoul(cp, &cp, 0);
	if (*cp && !isspace(*cp))
		goto inv_syntax;
	if (frame_len < 1 || frame_len > 160) {
		fprintf(stderr, "error: frame length argument out of range\n");
		return;
	}
	while (isspace(*cp))
		cp++;
	if (*cp) {
		if (strcmp(cp, "loop"))
			goto inv_syntax;
		loop = 1;
	} else
		loop = 0;
	play_file_cmdop(filename, frame_len, loop);
}

void
select_stdin()
{
	char buf[256], *cp;

	fgets(buf, sizeof buf, stdin);
	cp = index(buf, '\n');
	if (cp) {
		while (cp > buf && isspace(cp[-1]))
			cp--;
		*cp = '\0';
	}
	for (cp = buf; isspace(*cp); cp++)
		;
	if (!*cp)
		return;
	if (!strcmp(cp, "disc"))
		disconnect_command();
	else if (!strncmp(cp, "play", 4) && isspace(cp[4]))
		play_cmd(cp + 5);
	else if (!strcmp(cp, "play-stop"))
		play_file_stop();
	else
		fprintf(stderr, "error: non-understood stdin command\n");
}