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Diffstat (limited to 'libbb/progress.c')
| -rw-r--r-- | libbb/progress.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/libbb/progress.c b/libbb/progress.c new file mode 100644 index 000000000..f6f26922c --- /dev/null +++ b/libbb/progress.c @@ -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); + } + } +} |