src/pacman/download.c


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/*
 *  download.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 "list.h"
#include "download.h"
#include "conf.h"

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

/* pacman options */
extern config_t *config;

extern unsigned int maxcols;

#define FILENAME_TRIM_LEN 21
#define UPDATE_SPEED_SEC 0.1

void log_progress(const char *filename, int xfered, int total)
{
  static int lasthash = 0, mouth = 0;
  int i, hash;
  long chomp = 0;
  char *fname, *p; 
  unsigned int progresslen = maxcols - 57;
  int percent = ((float)xfered) / ((float)total) * 100;
  struct timeval current_time;
  float rate = 0.0;
  unsigned int eta_h = 0, eta_m = 0, eta_s = 0;
  float total_timediff, timediff;

  if(xfered == 0) {
    gettimeofday(&initial_time, NULL);
    gettimeofday(&last_time, NULL);
    xfered_last = 0;
    rate_last = 0.0;
  }

  if(config->noprogressbar) {
    return;
  }

  /* a little hard to conceal easter eggs in open-source software, but they're still fun. ;) */
  alpm_get_option(PM_OPT_CHOMP, &chomp);

  gettimeofday(&current_time, NULL);
  total_timediff = current_time.tv_sec-initial_time.tv_sec
    + (float)(current_time.tv_usec-initial_time.tv_usec) / 1000000;
  timediff = current_time.tv_sec-last_time.tv_sec
    + (float)(current_time.tv_usec-last_time.tv_usec) / 1000000;

  if(xfered == total) {
    /* compute final values */
    rate = total / (total_timediff * 1024);
    eta_s = (int)total_timediff;
  } else if(timediff < UPDATE_SPEED_SEC) {
  /* we avoid computing the ETA on too small periods of time, so that
     results are more significant */
    return;
  } else {
    rate = (xfered - xfered_last) / (timediff * 1024);
    rate = (rate + 2*rate_last) / 3;
    eta_s = (total - xfered) / (rate * 1024);
  }

  rate_last = rate;
  last_time = current_time;
  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';
  }

  /* hide the cursor i - prevent flicker
  printf("\033[?25l\033[?1c");
  */

  /*
   * DL rate cap, for printf formatting - this should be sane for a while
   * if anything we can change to MB/s if we need a higher rate
   */
  if(rate > 9999.9) {
    rate = 9999.9;
  }

  printf(" %-*s %6dK %#6.1fK/s %02d:%02d:%02d [", FILENAME_TRIM_LEN, fname, xfered/1024, rate, eta_h, eta_m, eta_s);

  free(fname);
  
  hash = percent*progresslen/100;
  for(i = progresslen; i > 0; --i) {
    if(chomp) {
      if(i > progresslen - hash) {
        printf("-");
      } else if(i == progresslen - hash) {
        if(lasthash == hash) {
          if(mouth) {
            printf("\033[1;33mC\033[m");
          } else {
            printf("\033[1;33mc\033[m");
          }
        } else {
          lasthash = hash;
          mouth = mouth == 1 ? 0 : 1;
          if(mouth) {
            printf("\033[1;33mC\033[m");
          } else {
            printf("\033[1;33mc\033[m");
          }
        }
      } else if(i%3 == 0) {
        printf("\033[0;37mo\033[m");
      } else {
        printf("\033[0;37m \033[m");
      }
    } else if(i > progresslen - hash) {
      printf("#");
    } else {
      printf("-");
    }
  }
  printf("] %3d%%\r", percent);

  if(percent == 100) {
    printf("\n");
  }
  fflush(stdout);
  return;
}

/* vim: set ts=2 sw=2 noet: */