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wget: factor out progress bar code

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Signed-off-by: Magnus Damm <magnus.damm@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Magnus Damm 2009-11-08 16:34:43 +01:00 committed by Denys Vlasenko
parent f5c2f72917
commit f5914992f3
4 changed files with 169 additions and 121 deletions
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10
include/libbb.h
View File

@ -1451,6 +1451,16 @@ int print_flags_separated(const int *masks, const char *labels,
int flags, const char *separator) FAST_FUNC;
int print_flags(const masks_labels_t *ml, int flags) FAST_FUNC;
typedef struct bb_progress_t {
off_t lastsize;
unsigned lastupdate_sec;
unsigned start_sec;
} bb_progress_t;
void bb_progress_init(bb_progress_t *p) FAST_FUNC;
void bb_progress_update(bb_progress_t *p, const char *curfile,
off_t beg_range, off_t transferred,
off_t totalsize) FAST_FUNC;
extern const char *applet_name;
/* "BusyBox vN.N.N (timestamp or extra_version)" */

1
libbb/Kbuild
View File

@ -76,6 +76,7 @@ lib-y += printable.o
lib-y += print_flags.o
lib-y += process_escape_sequence.o
lib-y += procps.o
lib-y += progress.o
lib-y += ptr_to_globals.o
lib-y += read.o
lib-y += read_key.o

152
libbb/progress.c Normal file
View File

@ -0,0 +1,152 @@
/* vi: set sw=4 ts=4: */
/*
* Progress bar code.
*/
/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
* much of which was blatantly stolen from openssh.
*/
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "libbb.h"
#include "unicode.h"
enum {
/* Seconds when xfer considered "stalled" */
STALLTIME = 5
};
static unsigned int get_tty2_width(void)
{
unsigned width;
get_terminal_width_height(2, &width, NULL);
return width;
}
void FAST_FUNC bb_progress_init(bb_progress_t *p)
{
p->start_sec = monotonic_sec();
p->lastupdate_sec = p->start_sec;
p->lastsize = 0;
}
void FAST_FUNC bb_progress_update(bb_progress_t *p,
const char *curfile,
off_t beg_range,
off_t transferred,
off_t totalsize)
{
off_t abbrevsize;
unsigned since_last_update, elapsed;
unsigned ratio;
int barlength, i;
ratio = 100;
if (totalsize) {
/* long long helps to have it working even if !LFS */
ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize);
if (ratio > 100) ratio = 100;
}
#if ENABLE_FEATURE_ASSUME_UNICODE
check_unicode_in_env();
/* libbb candidate? */
{
wchar_t wbuf21[21];
char *buf = xstrdup(curfile);
unsigned len;
/* trim to 20 wide chars max (sets wbuf21[20] to 0)
* also, in case mbstowcs fails, we at least
* dont get garbage */
memset(wbuf21, 0, sizeof(wbuf21));
/* convert to wide chars, no more than 20 */
len = mbstowcs(wbuf21, curfile, 20); /* NB: may return -1 */
/* back to multibyte; cant overflow */
wcstombs(buf, wbuf21, INT_MAX);
len = (len > 20) ? 0 : 20 - len;
fprintf(stderr, "\r%s%*s%4d%% ", buf, len, "", ratio);
free(buf);
}
#else
fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
#endif
barlength = get_tty2_width() - 49;
if (barlength > 0) {
/* god bless gcc for variable arrays :) */
i = barlength * ratio / 100;
{
char buf[i+1];
memset(buf, '*', i);
buf[i] = '\0';
fprintf(stderr, "|%s%*s|", buf, barlength - i, "");
}
}
i = 0;
abbrevsize = transferred + beg_range;
while (abbrevsize >= 100000) {
i++;
abbrevsize >>= 10;
}
/* see http://en.wikipedia.org/wiki/Tera */
fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]);
elapsed = monotonic_sec();
since_last_update = elapsed - p->lastupdate_sec;
if (transferred > p->lastsize) {
p->lastupdate_sec = elapsed;
p->lastsize = transferred;
if (since_last_update >= STALLTIME) {
/* We "cut off" these seconds from elapsed time
* by adjusting start time */
p->start_sec += since_last_update;
}
since_last_update = 0; /* we are un-stalled now */
}
elapsed -= p->start_sec; /* now it's "elapsed since start" */
if (since_last_update >= STALLTIME) {
fprintf(stderr, " - stalled -");
} else {
off_t to_download = totalsize - beg_range;
if (!totalsize || transferred <= 0 || (int)elapsed <= 0 || transferred > to_download) {
fprintf(stderr, "--:--:-- ETA");
} else {
/* to_download / (transferred/elapsed) - elapsed: */
int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed);
/* (long long helps to have working ETA even if !LFS) */
i = eta % 3600;
fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
}
}
}

127
networking/wget.c
View File

@ -24,12 +24,9 @@ struct globals {
off_t content_len; /* Content-length of the file */
off_t beg_range; /* Range at which continue begins */
#if ENABLE_FEATURE_WGET_STATUSBAR
off_t lastsize;
off_t totalsize;
off_t transferred; /* Number of bytes transferred so far */
const char *curfile; /* Name of current file being transferred */
unsigned lastupdate_sec;
unsigned start_sec;
bb_progress_t pmt;
#endif
smallint chunked; /* chunked transfer encoding */
smallint got_clen; /* got content-length: from server */
@ -40,108 +37,30 @@ struct BUG_G_too_big {
};
#define content_len (G.content_len )
#define beg_range (G.beg_range )
#define lastsize (G.lastsize )
#define totalsize (G.totalsize )
#define transferred (G.transferred )
#define curfile (G.curfile )
#define lastupdate_sec (G.lastupdate_sec )
#define start_sec (G.start_sec )
#define INIT_G() do { } while (0)
#if ENABLE_FEATURE_WGET_STATUSBAR
enum {
STALLTIME = 5 /* Seconds when xfer considered "stalled" */
};
static unsigned int get_tty2_width(void)
{
unsigned width;
get_terminal_width_height(2, &width, NULL);
return width;
}
static void progress_meter(int flag)
{
/* We can be called from signal handler */
int save_errno = errno;
off_t abbrevsize;
unsigned since_last_update, elapsed;
unsigned ratio;
int barlength, i;
if (flag == -1) { /* first call to progress_meter */
start_sec = monotonic_sec();
lastupdate_sec = start_sec;
lastsize = 0;
totalsize = content_len + beg_range; /* as content_len changes.. */
bb_progress_init(&G.pmt);
}
ratio = 100;
if (totalsize != 0 && !G.chunked) {
/* long long helps to have it working even if !LFS */
ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize);
if (ratio > 100) ratio = 100;
}
fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
barlength = get_tty2_width() - 49;
if (barlength > 0) {
/* god bless gcc for variable arrays :) */
i = barlength * ratio / 100;
{
char buf[i+1];
memset(buf, '*', i);
buf[i] = '\0';
fprintf(stderr, "|%s%*s|", buf, barlength - i, "");
}
}
i = 0;
abbrevsize = transferred + beg_range;
while (abbrevsize >= 100000) {
i++;
abbrevsize >>= 10;
}
/* see http://en.wikipedia.org/wiki/Tera */
fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]);
// Nuts! Ain't it easier to update progress meter ONLY when we transferred++?
elapsed = monotonic_sec();
since_last_update = elapsed - lastupdate_sec;
if (transferred > lastsize) {
lastupdate_sec = elapsed;
lastsize = transferred;
if (since_last_update >= STALLTIME) {
/* We "cut off" these seconds from elapsed time
* by adjusting start time */
start_sec += since_last_update;
}
since_last_update = 0; /* we are un-stalled now */
}
elapsed -= start_sec; /* now it's "elapsed since start" */
if (since_last_update >= STALLTIME) {
fprintf(stderr, " - stalled -");
} else {
off_t to_download = totalsize - beg_range;
if (transferred <= 0 || (int)elapsed <= 0 || transferred > to_download || G.chunked) {
fprintf(stderr, "--:--:-- ETA");
} else {
/* to_download / (transferred/elapsed) - elapsed: */
int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed);
/* (long long helps to have working ETA even if !LFS) */
i = eta % 3600;
fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
}
}
bb_progress_update(&G.pmt, curfile, beg_range, transferred,
G.chunked ? 0 : content_len + beg_range);
if (flag == 0) {
/* last call to progress_meter */
alarm(0);
transferred = 0;
fputc('\n', stderr);
transferred = 0;
} else {
if (flag == -1) { /* first call to progress_meter */
signal_SA_RESTART_empty_mask(SIGALRM, progress_meter);
@ -151,41 +70,7 @@ static void progress_meter(int flag)
errno = save_errno;
}
/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
* much of which was blatantly stolen from openssh. */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#else /* FEATURE_WGET_STATUSBAR */
static ALWAYS_INLINE void progress_meter(int flag UNUSED_PARAM) { }