src/pacman/downloadprog.c


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/*
 *  downloadprog.c
 * 
 *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
 * 
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
 *  USA.
 */

#include "config.h"
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <libintl.h>

#include <alpm.h>
/* pacman */
#include "util.h"
#include "log.h"
#include "downloadprog.h"
#include "conf.h"

/* progress bar */
static float rate_last;
static int xfered_last;
static struct timeval initial_time;

/* pacman options */
extern config_t *config;

#define FILENAME_TRIM_LEN 23

void log_progress(const char *filename, int xfered, int total)
{
  const int infolen = 50;
  char *fname, *p; 

  struct timeval current_time;
  float rate = 0.0;
  unsigned int eta_h = 0, eta_m = 0, eta_s = 0;
  float total_timediff, timediff;

  if(config->noprogressbar) {
    return;
  }

  int percent = (int)((float)xfered) / ((float)total) * 100;

  if(xfered == 0) {
    set_output_padding(1); /* we need padding from pm_fprintf output */
    gettimeofday(&initial_time, NULL);
    xfered_last = 0;
    rate_last = 0.0;
    timediff = get_update_timediff(1);
  } else {
    timediff = get_update_timediff(0);
  }

  if(percent > 0 && percent < 100 && !timediff) {
    /* only update the progress bar when
     * a) we first start
     * b) we end the progress
     * c) it has been long enough since the last call
     */
    return;
  }

  gettimeofday(&current_time, NULL);
  total_timediff = current_time.tv_sec-initial_time.tv_sec
    + (float)(current_time.tv_usec-initial_time.tv_usec) / 1000000.0;

  if(xfered == total) {
    /* compute final values */
    rate = (float)total / (total_timediff * 1024.0);
    if(total_timediff < 1.0 && total_timediff > 0.5) {
      /* round up so we don't display 00:00:00 for quick downloads all the time*/
      eta_s = 1;
    } else {
      eta_s = (unsigned int)total_timediff;
    }
    set_output_padding(0); /* shut off padding */
  } else {
    rate = (float)(xfered - xfered_last) / (timediff * 1024.0);
    rate = (float)(rate + 2*rate_last) / 3;
    eta_s = (unsigned int)(total - xfered) / (rate * 1024.0);
  }

  rate_last = rate;
  xfered_last = xfered;
  
  /* fix up time for display */
  eta_h = eta_s / 3600;
  eta_s -= eta_h * 3600;
  eta_m = eta_s / 60;
  eta_s -= eta_m * 60;

  fname = strdup(filename);
  if((p = strstr(fname, PM_EXT_PKG)) || (p = strstr(fname, PM_EXT_DB))) {
      *p = '\0';
  }
  if(strlen(fname) > FILENAME_TRIM_LEN) {
    fname[FILENAME_TRIM_LEN] = '\0';
  }

  /* Awesome formatting for progress bar.  We need a mess of Kb->Mb->Gb stuff
   * here. We'll use limit of 2048 for each until we get some empirical */
  char rate_size = 'K';
  char xfered_size = 'K';
  if(rate > 2048.0) {
    rate /= 1024.0;
    rate_size = 'M';
    if(rate > 2048.0) {
      rate /= 1024.0;
      rate_size = 'G';
      /* we should not go higher than this for a few years (9999.9 Gb/s?)*/
    }
  }

  xfered /= 1024; /* convert to K by default */
  if(xfered > 2048) {
    xfered /= 1024;
    xfered_size = 'M';
    if(xfered > 2048) {
      xfered /= 1024;
      xfered_size = 'G';
      /* I should seriously hope that archlinux packages never break
       * the 9999.9GB mark... we'd have more serious problems than the progress
       * bar in pacman */ 
    }
  }

  printf(" %-*s %6d%c %#6.1f%c/s %02u:%02u:%02u", FILENAME_TRIM_LEN, fname, 
         xfered, xfered_size, rate, rate_size, eta_h, eta_m, eta_s);

  free(fname);
  
  fill_progress(percent, getcols() - infolen);
  return;
}

/* vim: set ts=2 sw=2 noet: */