xbps/bin/xbps-install/util.c

/*-
 * Copyright (c) 2008-2013 Juan Romero Pardines.
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
 */

#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <errno.h>
#include <fnmatch.h>
#include <string.h>
#include <strings.h>
#include <sys/ioctl.h>

#include <xbps.h>
#include "defs.h"

int
get_maxcols(void)
{
	struct winsize ws;

	if (ioctl(fileno(stdin), TIOCGWINSZ, &ws) == 0)
		return ws.ws_col ? ws.ws_col : 80;

	return 80;
}

void
print_package_line(const char *str, int maxcols, bool reset)
{
	static int cols;
	static bool first;

	if (reset) {
		cols = 0;
		first = false;
		return;
	}
	cols += strlen(str) + 4;
	if (cols <= maxcols) {
		if (first == false) {
			printf("  ");
			first = true;
		}
	} else {
		printf("\n  ");
		cols = strlen(str) + 4;
	}
	printf("%s ", str);
}