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 /* Progress implementation used by default. Can be overriden in
66 wgetrc or by the fallback one. */
68 #define DEFAULT_PROGRESS_IMPLEMENTATION "bar"
70 /* Fallnback progress implementation should be something that works
71 under all display types. If you put something other than "dot"
72 here, remember that bar_set_params tries to switch to this if we're
73 not running on a TTY. So changing this to "bar" could cause
76 #define FALLBACK_PROGRESS_IMPLEMENTATION "dot"
78 /* Return non-zero if NAME names a valid progress bar implementation.
79 The characters after the first : will be ignored. */
82 valid_progress_implementation_p (const char *name)
85 struct progress_implementation *pi = implementations;
86 char *colon = strchr (name, ':');
87 int namelen = colon ? colon - name : strlen (name);
89 for (i = 0; i < ARRAY_SIZE (implementations); i++, pi++)
90 if (!strncmp (pi->name, name, namelen))
95 /* Set the progress implementation to NAME. */
98 set_progress_implementation (const char *name)
101 struct progress_implementation *pi = implementations;
105 name = DEFAULT_PROGRESS_IMPLEMENTATION;
107 colon = strchr (name, ':');
108 namelen = colon ? colon - name : strlen (name);
110 for (i = 0; i < ARRAY_SIZE (implementations); i++, pi++)
111 if (!strncmp (pi->name, name, namelen))
116 /* We call pi->set_params even if colon is NULL because we
117 want to give the implementation a chance to set up some
118 things it needs to run. */
122 pi->set_params (colon);
128 /* Create a progress gauge. INITIAL is the number of bytes the
129 download starts from (zero if the download starts from scratch).
130 TOTAL is the expected total number of bytes in this download. If
131 TOTAL is zero, it means that the download size is not known in
135 progress_create (long initial, long total)
137 return current_impl->create (initial, total);
140 /* Inform the progress gauge of newly received bytes. DLTIME is the
141 time in milliseconds since the beginning of the download. */
144 progress_update (void *progress, long howmuch, long dltime)
146 current_impl->update (progress, howmuch, dltime);
149 /* Tell the progress gauge to clean up. Calling this will free the
150 PROGRESS object, the further use of which is not allowed. */
153 progress_finish (void *progress, long dltime)
155 current_impl->finish (progress, dltime);
160 struct dot_progress {
161 long initial_length; /* how many bytes have been downloaded
163 long total_length; /* expected total byte count when the
168 int rows; /* number of rows printed so far */
169 int dots; /* number of dots printed in this row */
170 long last_timer_value;
173 /* Dot-progress backend for progress_create. */
176 dot_create (long initial, long total)
178 struct dot_progress *dp = xmalloc (sizeof (struct dot_progress));
180 memset (dp, 0, sizeof (*dp));
182 dp->initial_length = initial;
183 dp->total_length = total;
185 if (dp->initial_length)
187 int dot_bytes = opt.dot_bytes;
188 long row_bytes = opt.dot_bytes * opt.dots_in_line;
190 int remainder = (int) (dp->initial_length % row_bytes);
191 long skipped = dp->initial_length - remainder;
195 int skipped_k = (int) (skipped / 1024); /* skipped amount in K */
196 int skipped_k_len = numdigit (skipped_k);
197 if (skipped_k_len < 5)
200 /* Align the [ skipping ... ] line with the dots. To do
201 that, insert the number of spaces equal to the number of
202 digits in the skipped amount in K. */
203 logprintf (LOG_VERBOSE, _("\n%*s[ skipping %dK ]"),
204 2 + skipped_k_len, "", skipped_k);
207 logprintf (LOG_VERBOSE, "\n%5ldK", skipped / 1024);
208 for (; remainder >= dot_bytes; remainder -= dot_bytes)
210 if (dp->dots % opt.dot_spacing == 0)
211 logputs (LOG_VERBOSE, " ");
212 logputs (LOG_VERBOSE, ",");
215 assert (dp->dots < opt.dots_in_line);
217 dp->accumulated = remainder;
218 dp->rows = skipped / row_bytes;
225 print_percentage (long bytes, long expected)
227 int percentage = (int)(100.0 * bytes / expected);
228 logprintf (LOG_VERBOSE, "%3d%%", percentage);
232 print_download_speed (struct dot_progress *dp, long bytes, long dltime)
234 logprintf (LOG_VERBOSE, " %s",
235 retr_rate (bytes, dltime - dp->last_timer_value, 1));
236 dp->last_timer_value = dltime;
239 /* Dot-progress backend for progress_update. */
242 dot_update (void *progress, long howmuch, long dltime)
244 struct dot_progress *dp = progress;
245 int dot_bytes = opt.dot_bytes;
246 long row_bytes = opt.dot_bytes * opt.dots_in_line;
250 dp->accumulated += howmuch;
251 for (; dp->accumulated >= dot_bytes; dp->accumulated -= dot_bytes)
254 logprintf (LOG_VERBOSE, "\n%5ldK", dp->rows * row_bytes / 1024);
256 if (dp->dots % opt.dot_spacing == 0)
257 logputs (LOG_VERBOSE, " ");
258 logputs (LOG_VERBOSE, ".");
261 if (dp->dots >= opt.dots_in_line)
263 long row_qty = row_bytes;
264 if (dp->rows == dp->initial_length / row_bytes)
265 row_qty -= dp->initial_length % row_bytes;
270 if (dp->total_length)
271 print_percentage (dp->rows * row_bytes, dp->total_length);
272 print_download_speed (dp, row_qty, dltime);
279 /* Dot-progress backend for progress_finish. */
282 dot_finish (void *progress, long dltime)
284 struct dot_progress *dp = progress;
285 int dot_bytes = opt.dot_bytes;
286 long row_bytes = opt.dot_bytes * opt.dots_in_line;
291 for (i = dp->dots; i < opt.dots_in_line; i++)
293 if (i % opt.dot_spacing == 0)
294 logputs (LOG_VERBOSE, " ");
295 logputs (LOG_VERBOSE, " ");
297 if (dp->total_length)
299 print_percentage (dp->rows * row_bytes
300 + dp->dots * dot_bytes
306 long row_qty = dp->dots * dot_bytes + dp->accumulated;
307 if (dp->rows == dp->initial_length / row_bytes)
308 row_qty -= dp->initial_length % row_bytes;
309 print_download_speed (dp, row_qty, dltime);
312 logputs (LOG_VERBOSE, "\n\n");
318 /* This function interprets the progress "parameters". For example,
319 if Wget is invoked with --progress=dot:mega, it will set the
320 "dot-style" to "mega". Valid styles are default, binary, mega, and
324 dot_set_params (const char *params)
329 /* We use this to set the retrieval style. */
330 if (!strcasecmp (params, "default"))
332 /* Default style: 1K dots, 10 dots in a cluster, 50 dots in a
334 opt.dot_bytes = 1024;
335 opt.dot_spacing = 10;
336 opt.dots_in_line = 50;
338 else if (!strcasecmp (params, "binary"))
340 /* "Binary" retrieval: 8K dots, 16 dots in a cluster, 48 dots
342 opt.dot_bytes = 8192;
343 opt.dot_spacing = 16;
344 opt.dots_in_line = 48;
346 else if (!strcasecmp (params, "mega"))
348 /* "Mega" retrieval, for retrieving very long files; each dot is
349 64K, 8 dots in a cluster, 6 clusters (3M) in a line. */
350 opt.dot_bytes = 65536L;
352 opt.dots_in_line = 48;
354 else if (!strcasecmp (params, "giga"))
356 /* "Giga" retrieval, for retrieving very very *very* long files;
357 each dot is 1M, 8 dots in a cluster, 4 clusters (32M) in a
359 opt.dot_bytes = (1L << 20);
361 opt.dots_in_line = 32;
365 _("Invalid dot style specification `%s'; leaving unchanged.\n"),
369 /* "Thermometer" (bar) progress. */
371 /* Assumed screen width if we can't find the real value. */
372 #define DEFAULT_SCREEN_WIDTH 80
374 /* Minimum screen width we'll try to work with. If this is too small,
375 create_image will overflow the buffer. */
376 #define MINIMUM_SCREEN_WIDTH 45
378 static int screen_width = DEFAULT_SCREEN_WIDTH;
380 struct bar_progress {
381 long initial_length; /* how many bytes have been downloaded
383 long total_length; /* expected total byte count when the
385 long count; /* bytes downloaded so far */
387 long last_update; /* time of the last screen update. */
389 int width; /* screen width at the time the
390 progress gauge was created. */
391 char *buffer; /* buffer where the bar "image" is
397 static void create_image PARAMS ((struct bar_progress *, long));
398 static void display_image PARAMS ((char *));
401 bar_create (long initial, long total)
403 struct bar_progress *bp = xmalloc (sizeof (struct bar_progress));
405 memset (bp, 0, sizeof (*bp));
407 bp->initial_length = initial;
408 bp->total_length = total;
409 bp->width = screen_width;
410 bp->buffer = xmalloc (bp->width + 1);
412 logputs (LOG_VERBOSE, "\n\n");
414 create_image (bp, 0);
415 display_image (bp->buffer);
421 bar_update (void *progress, long howmuch, long dltime)
423 struct bar_progress *bp = progress;
424 int force_update = 0;
426 bp->count += howmuch;
427 if (bp->total_length > 0
428 && bp->count + bp->initial_length > bp->total_length)
429 /* We could be downloading more than total_length, e.g. when the
430 server sends an incorrect Content-Length header. In that case,
431 adjust bp->total_length to the new reality, so that the code in
432 create_image() that depends on total size being smaller or
433 equal to the expected size doesn't abort. */
434 bp->total_length = bp->count + bp->initial_length;
436 if (screen_width != bp->width)
438 bp->width = screen_width;
439 bp->buffer = xrealloc (bp->buffer, bp->width + 1);
442 if (dltime - bp->last_update < 200 && !force_update)
443 /* Don't update more often than every half a second. */
446 bp->last_update = dltime;
448 create_image (bp, dltime);
449 display_image (bp->buffer);
453 bar_finish (void *progress, long dltime)
455 struct bar_progress *bp = progress;
458 /* If the download was faster than the granularity of the timer,
459 fake some output so that we don't get the ugly "----.--" rate
460 at the download finish. */
463 create_image (bp, dltime);
464 display_image (bp->buffer);
466 logputs (LOG_VERBOSE, "\n\n");
473 create_image (struct bar_progress *bp, long dltime)
475 char *p = bp->buffer;
476 long size = bp->initial_length + bp->count;
478 /* The progress bar should look like this:
479 xx% [=======> ] nn.nnn rrK/s ETA 00:00
481 Calculate its geometry:
483 "xx% " or "100%" - percentage - 4 chars exactly
484 "[]" - progress bar decorations - 2 chars exactly
485 " n,nnn,nnn,nnn" - downloaded bytes - 14 or less chars
486 " 1012.56K/s" - dl rate - 11 chars exactly
487 " ETA xx:xx:xx" - ETA - 13 or less chars
489 "=====>..." - progress bar content - the rest
491 int progress_size = screen_width - (4 + 2 + 14 + 11 + 13);
493 if (progress_size < 5)
497 if (bp->total_length > 0)
499 int percentage = (int)(100.0 * size / bp->total_length);
501 assert (percentage <= 100);
503 if (percentage < 100)
504 sprintf (p, "%2d%% ", percentage);
517 /* The progress bar: "[====> ]" */
518 if (progress_size && bp->total_length > 0)
520 double fraction = (double)size / bp->total_length;
521 int dlsz = (int)(fraction * progress_size);
524 assert (dlsz <= progress_size);
531 /* Draw dlsz-1 '=' chars and one arrow char. */
537 while (p - begin < progress_size)
542 else if (progress_size)
544 /* If we can't draw a real progress bar, then at least show
545 *something* to the user. */
546 int ind = bp->tick % (progress_size * 2 - 6);
549 /* Make the star move in two directions. */
550 if (ind < progress_size - 2)
553 pos = progress_size - (ind - progress_size + 5);
556 for (i = 0; i < progress_size; i++)
558 if (i == pos - 1) *p++ = '<';
559 else if (i == pos ) *p++ = '=';
560 else if (i == pos + 1) *p++ = '>';
570 /* If there are 7 or less digits (9 because of "legible" comas),
571 print the number in constant space. This will prevent the rest
572 of the line jerking at the beginning of download, but without
573 assigning maximum width in all cases. */
574 sprintf (p, " %9s", legible (size));
578 if (dltime && bp->count)
580 static char *short_units[] = { "B/s", "K/s", "M/s", "G/s" };
582 double dlrate = calc_rate (bp->count, dltime, &units);
583 sprintf (p, " %7.2f%s", dlrate, short_units[units]);
588 strcpy (p, " --.--K/s");
592 /* " ETA xx:xx:xx" */
593 if (bp->total_length > 0 && bp->count > 0)
595 int eta, eta_hrs, eta_min, eta_sec;
596 double tm_sofar = (double)dltime / 1000;
597 long bytes_remaining = bp->total_length - size;
599 eta = (int) (tm_sofar * bytes_remaining / bp->count);
601 eta_hrs = eta / 3600, eta %= 3600;
602 eta_min = eta / 60, eta %= 60;
605 /*printf ("\neta: %d, %d %d %d\n", eta, eta_hrs, eta_min, eta_sec);*/
606 /*printf ("\n%ld %f %ld %ld\n", dltime, tm_sofar, bytes_remaining, bp->count);*/
615 /* Bogus value, for whatever reason. We must avoid overflow. */
616 sprintf (p, "--:--");
617 else if (eta_hrs > 0)
618 sprintf (p, "%d:%02d:%02d", eta_hrs, eta_min, eta_sec);
620 sprintf (p, "%02d:%02d", eta_min, eta_sec);
623 else if (bp->total_length > 0)
625 strcpy (p, " ETA --:--");
629 assert (p - bp->buffer <= screen_width);
631 while (p < bp->buffer + screen_width)
636 /* Print the contents of the buffer as a one-line ASCII "image" so
637 that it can be overwritten next time. */
640 display_image (char *buf)
642 char *del_buf = alloca (screen_width + 1);
643 memset (del_buf, '\b', screen_width);
644 del_buf[screen_width] = '\0';
645 logputs (LOG_VERBOSE, del_buf);
646 logputs (LOG_VERBOSE, buf);
650 bar_set_params (const char *params)
656 || !isatty (fileno (stderr))
662 && 0 == strcmp (params, "force")))
664 /* We're not printing to a TTY, so revert to the fallback
665 display. #### We're recursively calling
666 set_progress_implementation here, which is slightly kludgy.
667 It would be nicer if we provided that function a return value
668 indicating a failure of some sort. */
669 set_progress_implementation (FALLBACK_PROGRESS_IMPLEMENTATION);
673 sw = determine_screen_width ();
674 if (sw && sw >= MINIMUM_SCREEN_WIDTH)
679 progress_handle_sigwinch (int sig)
681 int sw = determine_screen_width ();
682 if (sw && sw >= MINIMUM_SCREEN_WIDTH)