2 Copyright (C) 2001 Free Software Foundation, Inc.
4 This file is part of GNU Wget.
6 GNU Wget is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 \(at your option) any later version.
11 GNU Wget 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 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Wget; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
28 #endif /* HAVE_STRING_H */
39 struct progress_implementation {
41 void *(*create) (long, long);
42 void (*update) (void *, long, long);
43 void (*finish) (void *, long);
44 void (*set_params) (const char *);
47 /* Necessary forward declarations. */
49 static void *dot_create PARAMS ((long, long));
50 static void dot_update PARAMS ((void *, long, long));
51 static void dot_finish PARAMS ((void *, long));
52 static void dot_set_params PARAMS ((const char *));
54 static void *bar_create PARAMS ((long, long));
55 static void bar_update PARAMS ((void *, long, long));
56 static void bar_finish PARAMS ((void *, long));
57 static void bar_set_params PARAMS ((const char *));
59 static struct progress_implementation implementations[] = {
60 { "dot", dot_create, dot_update, dot_finish, dot_set_params },
61 { "bar", bar_create, bar_update, bar_finish, bar_set_params }
63 static struct progress_implementation *current_impl;
65 /* Default progress implementation should be something that works
66 under all display types. If you put something other than "dot"
67 here, remember that bar_set_params tries to switch to this if we're
68 not running on a TTY. So changing this to "bar" could cause
71 #define DEFAULT_PROGRESS_IMPLEMENTATION "dot"
73 /* Return non-zero if NAME names a valid progress bar implementation.
74 The characters after the first : will be ignored. */
77 valid_progress_implementation_p (const char *name)
80 struct progress_implementation *pi = implementations;
81 char *colon = strchr (name, ':');
82 int namelen = colon ? colon - name : strlen (name);
84 for (i = 0; i < ARRAY_SIZE (implementations); i++, pi++)
85 if (!strncmp (pi->name, name, namelen))
90 /* Set the progress implementation to NAME. */
93 set_progress_implementation (const char *name)
96 struct progress_implementation *pi = implementations;
100 name = DEFAULT_PROGRESS_IMPLEMENTATION;
102 colon = strchr (name, ':');
103 namelen = colon ? colon - name : strlen (name);
105 for (i = 0; i < ARRAY_SIZE (implementations); i++, pi++)
106 if (!strncmp (pi->name, name, namelen))
111 /* We call pi->set_params even if colon is NULL because we
112 want to give the implementation a chance to set up some
113 things it needs to run. */
117 pi->set_params (colon);
123 /* Create a progress gauge. INITIAL is the number of bytes the
124 download starts from (zero if the download starts from scratch).
125 TOTAL is the expected total number of bytes in this download. If
126 TOTAL is zero, it means that the download size is not known in
130 progress_create (long initial, long total)
132 return current_impl->create (initial, total);
135 /* Inform the progress gauge of newly received bytes. DLTIME is the
136 time in milliseconds since the beginning of the download. */
139 progress_update (void *progress, long howmuch, long dltime)
141 current_impl->update (progress, howmuch, dltime);
144 /* Tell the progress gauge to clean up. Calling this will free the
145 PROGRESS object, the further use of which is not allowed. */
148 progress_finish (void *progress, long dltime)
150 current_impl->finish (progress, dltime);
155 struct dot_progress {
156 long initial_length; /* how many bytes have been downloaded
158 long total_length; /* expected total byte count when the
163 int rows; /* number of rows printed so far */
164 int dots; /* number of dots printed in this row */
165 long last_timer_value;
168 /* Dot-progress backend for progress_create. */
171 dot_create (long initial, long total)
173 struct dot_progress *dp = xmalloc (sizeof (struct dot_progress));
175 memset (dp, 0, sizeof (*dp));
177 dp->initial_length = initial;
178 dp->total_length = total;
180 if (dp->initial_length)
182 int dot_bytes = opt.dot_bytes;
183 long row_bytes = opt.dot_bytes * opt.dots_in_line;
185 int remainder = (int) (dp->initial_length % row_bytes);
186 long skipped = dp->initial_length - remainder;
190 int skipped_k = (int) (skipped / 1024); /* skipped amount in K */
191 int skipped_k_len = numdigit (skipped_k);
192 if (skipped_k_len < 5)
195 /* Align the [ skipping ... ] line with the dots. To do
196 that, insert the number of spaces equal to the number of
197 digits in the skipped amount in K. */
198 logprintf (LOG_VERBOSE, "\n%*s%s",
199 2 + skipped_k_len, "", _("[ skipping %dK ]"));
202 logprintf (LOG_VERBOSE, "\n%5ldK", skipped / 1024);
203 for (; remainder >= dot_bytes; remainder -= dot_bytes)
205 if (dp->dots % opt.dot_spacing == 0)
206 logputs (LOG_VERBOSE, " ");
207 logputs (LOG_VERBOSE, ",");
210 assert (dp->dots < opt.dots_in_line);
212 dp->accumulated = remainder;
213 dp->rows = skipped / row_bytes;
220 print_percentage (long bytes, long expected)
222 int percentage = (int)(100.0 * bytes / expected);
223 logprintf (LOG_VERBOSE, "%3d%%", percentage);
227 print_download_speed (struct dot_progress *dp, long bytes, long dltime)
229 logprintf (LOG_VERBOSE, " %s",
230 retr_rate (bytes, dltime - dp->last_timer_value, 1));
231 dp->last_timer_value = dltime;
234 /* Dot-progress backend for progress_update. */
237 dot_update (void *progress, long howmuch, long dltime)
239 struct dot_progress *dp = progress;
240 int dot_bytes = opt.dot_bytes;
241 long row_bytes = opt.dot_bytes * opt.dots_in_line;
245 dp->accumulated += howmuch;
246 for (; dp->accumulated >= dot_bytes; dp->accumulated -= dot_bytes)
249 logprintf (LOG_VERBOSE, "\n%5ldK", dp->rows * row_bytes / 1024);
251 if (dp->dots % opt.dot_spacing == 0)
252 logputs (LOG_VERBOSE, " ");
253 logputs (LOG_VERBOSE, ".");
256 if (dp->dots >= opt.dots_in_line)
261 if (dp->total_length)
262 print_percentage (dp->rows * row_bytes, dp->total_length);
264 print_download_speed (dp,
265 row_bytes - (dp->initial_length % row_bytes),
273 /* Dot-progress backend for progress_finish. */
276 dot_finish (void *progress, long dltime)
278 struct dot_progress *dp = progress;
279 int dot_bytes = opt.dot_bytes;
280 long row_bytes = opt.dot_bytes * opt.dots_in_line;
285 for (i = dp->dots; i < opt.dots_in_line; i++)
287 if (i % opt.dot_spacing == 0)
288 logputs (LOG_VERBOSE, " ");
289 logputs (LOG_VERBOSE, " ");
291 if (dp->total_length)
293 print_percentage (dp->rows * row_bytes
294 + dp->dots * dot_bytes
299 print_download_speed (dp, dp->dots * dot_bytes
301 - dp->initial_length % row_bytes,
303 logputs (LOG_VERBOSE, "\n\n");
310 /* This function interprets the progress "parameters". For example,
311 if Wget is invoked with --progress=bar:mega, it will set the
312 "dot-style" to "mega". Valid styles are default, binary, mega, and
316 dot_set_params (const char *params)
321 /* We use this to set the retrieval style. */
322 if (!strcasecmp (params, "default"))
324 /* Default style: 1K dots, 10 dots in a cluster, 50 dots in a
326 opt.dot_bytes = 1024;
327 opt.dot_spacing = 10;
328 opt.dots_in_line = 50;
330 else if (!strcasecmp (params, "binary"))
332 /* "Binary" retrieval: 8K dots, 16 dots in a cluster, 48 dots
334 opt.dot_bytes = 8192;
335 opt.dot_spacing = 16;
336 opt.dots_in_line = 48;
338 else if (!strcasecmp (params, "mega"))
340 /* "Mega" retrieval, for retrieving very long files; each dot is
341 64K, 8 dots in a cluster, 6 clusters (3M) in a line. */
342 opt.dot_bytes = 65536L;
344 opt.dots_in_line = 48;
346 else if (!strcasecmp (params, "giga"))
348 /* "Giga" retrieval, for retrieving very very *very* long files;
349 each dot is 1M, 8 dots in a cluster, 4 clusters (32M) in a
351 opt.dot_bytes = (1L << 20);
353 opt.dots_in_line = 32;
357 _("Invalid dot style specification `%s'; leaving unchanged.\n"),
361 /* "Thermometer" (bar) progress. */
363 /* Assumed screen width if we can't find the real value. */
364 #define DEFAULT_SCREEN_WIDTH 80
366 /* Minimum screen width we'll try to work with. If this is too small,
367 create_image will overflow the buffer. */
368 #define MINIMUM_SCREEN_WIDTH 45
370 static int screen_width = DEFAULT_SCREEN_WIDTH;
372 struct bar_progress {
373 long initial_length; /* how many bytes have been downloaded
375 long total_length; /* expected total byte count when the
377 long count; /* bytes downloaded so far */
379 long last_update; /* time of the last screen update. */
381 int width; /* screen width at the time the
382 progress gauge was created. */
383 char *buffer; /* buffer where the bar "image" is
389 static void create_image PARAMS ((struct bar_progress *, long));
390 static void display_image PARAMS ((char *));
393 bar_create (long initial, long total)
395 struct bar_progress *bp = xmalloc (sizeof (struct bar_progress));
397 memset (bp, 0, sizeof (*bp));
399 bp->initial_length = initial;
400 bp->total_length = total;
401 bp->width = screen_width;
402 bp->buffer = xmalloc (bp->width + 1);
404 logputs (LOG_VERBOSE, "\n\n");
406 create_image (bp, 0);
407 display_image (bp->buffer);
413 bar_update (void *progress, long howmuch, long dltime)
415 struct bar_progress *bp = progress;
416 int force_update = 0;
418 bp->count += howmuch;
419 if (bp->total_length > 0
420 && bp->count + bp->initial_length > bp->total_length)
421 /* We could be downloading more than total_length, e.g. when the
422 server sends an incorrect Content-Length header. In that case,
423 adjust bp->total_length to the new reality, so that the code in
424 create_image() that depends on total size being smaller or
425 equal to the expected size doesn't abort. */
426 bp->total_length = bp->count + bp->initial_length;
428 if (screen_width != bp->width)
430 bp->width = screen_width;
431 bp->buffer = xrealloc (bp->buffer, bp->width + 1);
434 if (dltime - bp->last_update < 200 && !force_update)
435 /* Don't update more often than every half a second. */
438 bp->last_update = dltime;
440 create_image (bp, dltime);
441 display_image (bp->buffer);
445 bar_finish (void *progress, long dltime)
447 struct bar_progress *bp = progress;
450 /* If the download was faster than the granularity of the timer,
451 fake some output so that we don't get the ugly "----.--" rate
452 at the download finish. */
455 create_image (bp, dltime);
456 display_image (bp->buffer);
458 logputs (LOG_VERBOSE, "\n\n");
465 create_image (struct bar_progress *bp, long dltime)
467 char *p = bp->buffer;
468 long size = bp->initial_length + bp->count;
470 /* The progress bar should look like this:
471 xx% [=======> ] nn.nnn rrK/s ETA 00:00
473 Calculate its geometry:
475 "xx% " or "100%" - percentage - 4 chars exactly
476 "[]" - progress bar decorations - 2 chars exactly
477 " n,nnn,nnn,nnn" - downloaded bytes - 14 or less chars
478 " 1012.56K/s" - dl rate - 11 chars exactly
479 " ETA xx:xx:xx" - ETA - 13 or less chars
481 "=====>..." - progress bar content - the rest
483 int progress_size = screen_width - (4 + 2 + 14 + 11 + 13);
485 if (progress_size < 5)
489 if (bp->total_length > 0)
491 int percentage = (int)(100.0 * size / bp->total_length);
493 assert (percentage <= 100);
495 if (percentage < 100)
496 sprintf (p, "%2d%% ", percentage);
509 /* The progress bar: "[====> ]" */
510 if (progress_size && bp->total_length > 0)
512 double fraction = (double)size / bp->total_length;
513 int dlsz = (int)(fraction * progress_size);
516 assert (dlsz <= progress_size);
523 /* Draw dlsz-1 '=' chars and one arrow char. */
529 while (p - begin < progress_size)
534 else if (progress_size)
536 /* If we can't draw a real progress bar, then at least show
537 *something* to the user. */
538 int ind = bp->tick % (progress_size * 2 - 6);
541 /* Make the star move in two directions. */
542 if (ind < progress_size - 2)
545 pos = progress_size - (ind - progress_size + 5);
548 for (i = 0; i < progress_size; i++)
550 if (i == pos - 1) *p++ = '<';
551 else if (i == pos ) *p++ = '=';
552 else if (i == pos + 1) *p++ = '>';
562 /* If there are 7 or less digits (9 because of "legible" comas),
563 print the number in constant space. This will prevent the rest
564 of the line jerking at the beginning of download, but without
565 assigning maximum width in all cases. */
566 sprintf (p, " %9s", legible (size));
570 if (dltime && bp->count)
572 static char *short_units[] = { "B/s", "K/s", "M/s", "G/s" };
574 double dlrate = calc_rate (bp->count, dltime, &units);
575 sprintf (p, " %7.2f%s", dlrate, short_units[units]);
580 strcpy (p, " --.--K/s");
584 /* " ETA xx:xx:xx" */
585 if (bp->total_length > 0 && bp->count > 0)
587 int eta, eta_hrs, eta_min, eta_sec;
588 double tm_sofar = (double)dltime / 1000;
589 long bytes_remaining = bp->total_length - size;
591 eta = (int) (tm_sofar * bytes_remaining / bp->count);
593 eta_hrs = eta / 3600, eta %= 3600;
594 eta_min = eta / 60, eta %= 60;
597 /*printf ("\neta: %d, %d %d %d\n", eta, eta_hrs, eta_min, eta_sec);*/
598 /*printf ("\n%ld %f %ld %ld\n", dltime, tm_sofar, bytes_remaining, bp->count);*/
607 /* Bogus value, for whatever reason. We must avoid overflow. */
608 sprintf (p, "--:--");
609 else if (eta_hrs > 0)
610 sprintf (p, "%d:%02d:%02d", eta_hrs, eta_min, eta_sec);
612 sprintf (p, "%02d:%02d", eta_min, eta_sec);
615 else if (bp->total_length > 0)
617 strcpy (p, " ETA --:--");
621 assert (p - bp->buffer <= screen_width);
623 while (p < bp->buffer + screen_width)
628 /* Print the contents of the buffer as a one-line ASCII "image" so
629 that it can be overwritten next time. */
632 display_image (char *buf)
634 char *del_buf = alloca (screen_width + 1);
635 memset (del_buf, '\b', screen_width);
636 del_buf[screen_width] = '\0';
637 logputs (LOG_VERBOSE, del_buf);
638 logputs (LOG_VERBOSE, buf);
642 bar_set_params (const char *params)
648 || !isatty (fileno (stderr))
654 && 0 == strcmp (params, "force")))
656 /* We're not printing to a TTY, so revert to the fallback
657 display. #### We're recursively calling
658 set_progress_implementation here, which is slightly kludgy.
659 It would be nicer if that function could resolve this problem
661 set_progress_implementation (NULL);
665 sw = determine_screen_width ();
666 if (sw && sw >= MINIMUM_SCREEN_WIDTH)
671 progress_handle_sigwinch (int sig)
673 int sw = determine_screen_width ();
674 if (sw && sw >= MINIMUM_SCREEN_WIDTH)