"Fossies" - the Fresh Open Source Software Archive

Member "zsync-0.6.2/progress.c" (16 Sep 2010, 3025 Bytes) of package /linux/privat/old/zsync-0.6.2.tar.gz:

    1 
    2 /*
    3  *   zsync - client side rsync over http
    4  *   Copyright (C) 2004,2005,2007,2009 Colin Phipps <cph@moria.org.uk>
    5  *
    6  *   This program is free software; you can redistribute it and/or modify
    7  *   it under the terms of the Artistic License v2 (see the accompanying 
    8  *   file COPYING for the full license terms), or, at your option, any later 
    9  *   version of the same license.
   10  *
   11  *   This program is distributed in the hope that it will be useful,
   12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   14  *   COPYING file for details.
   15  */
   16 
   17 #include "zsglobal.h"
   18 
   19 #include <stdio.h>
   20 #include <time.h>
   21 
   22 #ifdef WITH_DMALLOC
   23 # include <dmalloc.h>
   24 #endif
   25 
   26 #include "progress.h"
   27 
   28 int no_progress;
   29 
   30 /* progbar(chars, percent)
   31  * (Re)print progress bar with chars out of 20 shown and followed by the given
   32  * percentage done. */
   33 static void progbar(int j, float pcnt) {
   34     int i;
   35     char buf[21];
   36 
   37     for (i = 0; i < j && i < 20; i++)
   38         buf[i] = '#';
   39     for (; i < 20; i++)
   40         buf[i] = '-';
   41     buf[i] = 0;
   42     printf("\r%s %.1f%%", buf, pcnt);
   43 }
   44 
   45 /* do_progress(progress, percent, total_bytes_retrieved
   46  * Updates the supplied progress structure with the new % done given, and
   47  * recalculates the rolling download rate given the supplied
   48  * total_bytes_retrieved (and the current time) */
   49 void do_progress(struct progress *p, float pcnt, long long newdl) {
   50     /* If new or if time has passed, update progress display & data */
   51     time_t newtime = time(NULL);
   52     if (p->lasttime != newtime) {
   53         int passed = p->lasttime ? newtime - p->lasttime : 0;
   54         if (!p->lasttime)
   55             p->starttime = newtime;
   56         p->lasttime = newtime;
   57 
   58         /* Update progress bar displayed */
   59         progbar(pcnt * (20.0 / 100.0), pcnt);
   60 
   61         /* Each time 1s has passed, we update and redisplay our download rate */
   62         if (passed) {
   63             float rate = newdl - p->lastdl;
   64             int sleft = (100.0f - pcnt) / (pcnt - p->lastpcnt);
   65             if (passed != 1) {
   66                 rate /= passed;
   67                 sleft *= passed;
   68             }
   69             printf(" %.1f kBps ", rate / 1000.0);
   70             if (sleft < 60 * 1000)
   71                 printf("%d:%02d ETA  ", sleft / 60, sleft % 60);
   72             else
   73                 puts("        ");
   74         }
   75         p->lastdl = newdl;
   76         p->lastpcnt = pcnt;
   77         fflush(stdout);
   78     }
   79 }
   80 
   81 /* end_progress(progress, done)
   82  * Do one final update of the progress display (set to 100% if done is set to
   83  * true), and then release the progress data structures.
   84  */
   85 void end_progress(struct progress *p, int done) {
   86     if (done == 2)
   87         progbar(20, 100.0);
   88     else
   89         progbar(p->lastpcnt * (20.0 / 100.0), p->lastpcnt);
   90 
   91     {
   92         float rate = ((float)p->lastdl) / (p->lasttime - p->starttime + 0.5);
   93         printf(" %.1f kBps ", rate / 1000.0);
   94     }
   95     puts(done == 2 ? "DONE    \n" : !done ? "aborted    \n" : "        \n");
   96     fflush(stdout);
   97 }