0xFFFF/src/printf-utils.c

/*
 *  0xFFFF - Open Free Fiasco Firmware Flasher
 *  Copyright (C) 2007  pancake <pancake@youterm.com>
 *  Copyright (C) 2012  Pali Rohár <pali.rohar@gmail.com>
 *
 *  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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>

#include <sys/select.h>
#include <sys/time.h>
#include <sys/types.h>

#include "global.h"

#include "printf-utils.h"

int printf_prev = 0;

void printf_progressbar(unsigned long long part, unsigned long long total) {

	char *columns = getenv("COLUMNS");
	int pc;
	int tmp, cols = 80;

	/* percentage calculation */
	pc = total==0?100:(int)(part*100/total);
	(pc<0)?pc=0:(pc>100)?pc=100:0;

	PRINTF_BACK();
	PRINTF_ADD("\x1b[K  %3d%% [", pc);
	if (columns)
		cols = atoi(columns);
	if (cols > 115)
		cols = 115;
	cols-=15;
	for(tmp=cols*pc/100;tmp;tmp--) PRINTF_ADD("#");
	for(tmp=cols-(cols*pc/100);tmp;tmp--) PRINTF_ADD("-");
	PRINTF_ADD("]");
	if (part == total) PRINTF_END();
	fflush(stdout);

}

void printf_and_wait(const char * format, ...) {

	va_list ap;
	char c;
	fd_set rfds;
	struct timeval tv;

	tv.tv_sec = 0;
	tv.tv_usec = 0;

	FD_ZERO(&rfds);
	FD_SET(0, &rfds);

	while ( select(1, &rfds, NULL, NULL, &tv) == 1 )
		if ( read(0, &c, 1) < 0 )
			break;

	va_start(ap, format);
	vprintf(format, ap);
	va_end(ap);
	fflush(stdout);

	FD_ZERO(&rfds);
	FD_SET(0, &rfds);

	while ( select(1, &rfds, NULL, NULL, NULL) == 1 ) {
		if ( read(0, &c, 1) < 0 || c == '\n' )
			break;
	}

}