Mercurial > hg
view mercurial/progress.py @ 46325:e5e6282fa66a
hghave: split apart testing for the curses module and `tic` executable
ef771d329961 skipped the check for the `tic` executable, because the curses
module alone on Windows is enough to pass the `test-*-curses.t` tests. However,
`test-status-color.t` uses this same check and explicitly invoked the
executable, which fails on Windows. From the cursory searching I did, curses on
unix requires `tic`, which I assume is why they were tied together in the first
place. So this continues to require both to get past the curses guards on non
Windows platforms.
Differential Revision: https://phab.mercurial-scm.org/D9814
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Sun, 17 Jan 2021 22:25:15 -0500 |
parents | 89a2afe31e82 |
children | 6000f5b25c9b |
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# progress.py progress bars related code # # Copyright (C) 2010 Augie Fackler <durin42@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import errno import threading import time from .i18n import _ from . import encoding def spacejoin(*args): return b' '.join(s for s in args if s) def shouldprint(ui): return not (ui.quiet or ui.plain(b'progress')) and ( ui._isatty(ui.ferr) or ui.configbool(b'progress', b'assume-tty') ) def fmtremaining(seconds): """format a number of remaining seconds in human readable way This will properly display seconds, minutes, hours, days if needed""" if seconds < 60: # i18n: format XX seconds as "XXs" return _(b"%02ds") % seconds minutes = seconds // 60 if minutes < 60: seconds -= minutes * 60 # i18n: format X minutes and YY seconds as "XmYYs" return _(b"%dm%02ds") % (minutes, seconds) # we're going to ignore seconds in this case minutes += 1 hours = minutes // 60 minutes -= hours * 60 if hours < 30: # i18n: format X hours and YY minutes as "XhYYm" return _(b"%dh%02dm") % (hours, minutes) # we're going to ignore minutes in this case hours += 1 days = hours // 24 hours -= days * 24 if days < 15: # i18n: format X days and YY hours as "XdYYh" return _(b"%dd%02dh") % (days, hours) # we're going to ignore hours in this case days += 1 weeks = days // 7 days -= weeks * 7 if weeks < 55: # i18n: format X weeks and YY days as "XwYYd" return _(b"%dw%02dd") % (weeks, days) # we're going to ignore days and treat a year as 52 weeks weeks += 1 years = weeks // 52 weeks -= years * 52 # i18n: format X years and YY weeks as "XyYYw" return _(b"%dy%02dw") % (years, weeks) # file_write() and file_flush() of Python 2 do not restart on EINTR if # the file is attached to a "slow" device (e.g. a terminal) and raise # IOError. We cannot know how many bytes would be written by file_write(), # but a progress text is known to be short enough to be written by a # single write() syscall, so we can just retry file_write() with the whole # text. (issue5532) # # This should be a short-term workaround. We'll need to fix every occurrence # of write() to a terminal or pipe. def _eintrretry(func, *args): while True: try: return func(*args) except IOError as err: if err.errno == errno.EINTR: continue raise class progbar(object): def __init__(self, ui): self.ui = ui self._refreshlock = threading.Lock() self.resetstate() def resetstate(self): self.topics = [] self.topicstates = {} self.starttimes = {} self.startvals = {} self.printed = False self.lastprint = time.time() + float( self.ui.config(b'progress', b'delay') ) self.curtopic = None self.lasttopic = None self.indetcount = 0 self.refresh = float(self.ui.config(b'progress', b'refresh')) self.changedelay = max( 3 * self.refresh, float(self.ui.config(b'progress', b'changedelay')) ) self.order = self.ui.configlist(b'progress', b'format') self.estimateinterval = self.ui.configwith( float, b'progress', b'estimateinterval' ) def show(self, now, topic, pos, item, unit, total): if not shouldprint(self.ui): return termwidth = self.width() self.printed = True head = b'' needprogress = False tail = b'' for indicator in self.order: add = b'' if indicator == b'topic': add = topic elif indicator == b'number': if total: add = b'%*d/%d' % (len(str(total)), pos, total) else: add = b'%d' % pos elif indicator.startswith(b'item') and item: slice = b'end' if b'-' in indicator: wid = int(indicator.split(b'-')[1]) elif b'+' in indicator: slice = b'beginning' wid = int(indicator.split(b'+')[1]) else: wid = 20 if slice == b'end': add = encoding.trim(item, wid, leftside=True) else: add = encoding.trim(item, wid) add += (wid - encoding.colwidth(add)) * b' ' elif indicator == b'bar': add = b'' needprogress = True elif indicator == b'unit' and unit: add = unit elif indicator == b'estimate': add = self.estimate(topic, pos, total, now) elif indicator == b'speed': add = self.speed(topic, pos, unit, now) if not needprogress: head = spacejoin(head, add) else: tail = spacejoin(tail, add) if needprogress: used = 0 if head: used += encoding.colwidth(head) + 1 if tail: used += encoding.colwidth(tail) + 1 progwidth = termwidth - used - 3 if total and pos <= total: amt = pos * progwidth // total bar = b'=' * (amt - 1) if amt > 0: bar += b'>' bar += b' ' * (progwidth - amt) else: progwidth -= 3 self.indetcount += 1 # mod the count by twice the width so we can make the # cursor bounce between the right and left sides amt = self.indetcount % (2 * progwidth) amt -= progwidth bar = ( b' ' * int(progwidth - abs(amt)) + b'<=>' + b' ' * int(abs(amt)) ) prog = b''.join((b'[', bar, b']')) out = spacejoin(head, prog, tail) else: out = spacejoin(head, tail) self._writeerr(b'\r' + encoding.trim(out, termwidth)) self.lasttopic = topic self._flusherr() def clear(self): if not self.printed or not self.lastprint or not shouldprint(self.ui): return self._writeerr(b'\r%s\r' % (b' ' * self.width())) self._flusherr() if self.printed: # force immediate re-paint of progress bar self.lastprint = 0 def complete(self): if not shouldprint(self.ui): return if self.ui.configbool(b'progress', b'clear-complete'): self.clear() else: self._writeerr(b'\n') self._flusherr() def _flusherr(self): _eintrretry(self.ui.ferr.flush) def _writeerr(self, msg): _eintrretry(self.ui.ferr.write, msg) def width(self): tw = self.ui.termwidth() return min(int(self.ui.config(b'progress', b'width', default=tw)), tw) def estimate(self, topic, pos, total, now): if total is None: return b'' initialpos = self.startvals[topic] target = total - initialpos delta = pos - initialpos if delta > 0: elapsed = now - self.starttimes[topic] seconds = (elapsed * (target - delta)) // delta + 1 return fmtremaining(seconds) return b'' def speed(self, topic, pos, unit, now): initialpos = self.startvals[topic] delta = pos - initialpos elapsed = now - self.starttimes[topic] if elapsed > 0: return _(b'%d %s/sec') % (delta / elapsed, unit) return b'' def _oktoprint(self, now): '''Check if conditions are met to print - e.g. changedelay elapsed''' if ( self.lasttopic is None # first time we printed # not a topic change or self.curtopic == self.lasttopic # it's been long enough we should print anyway or now - self.lastprint >= self.changedelay ): return True else: return False def _calibrateestimate(self, topic, now, pos): """Adjust starttimes and startvals for topic so ETA works better If progress is non-linear (ex. get much slower in the last minute), it's more friendly to only use a recent time span for ETA and speed calculation. [======================================> ] ^^^^^^^ estimateinterval, only use this for estimation """ interval = self.estimateinterval if interval <= 0: return elapsed = now - self.starttimes[topic] if elapsed > interval: delta = pos - self.startvals[topic] newdelta = delta * interval / elapsed # If a stall happens temporarily, ETA could change dramatically # frequently. This is to avoid such dramatical change and make ETA # smoother. if newdelta < 0.1: return self.startvals[topic] = pos - newdelta self.starttimes[topic] = now - interval def progress(self, topic, pos, item=b'', unit=b'', total=None): if pos is None: self.closetopic(topic) return now = time.time() with self._refreshlock: if topic not in self.topics: self.starttimes[topic] = now self.startvals[topic] = pos self.topics.append(topic) self.topicstates[topic] = pos, item, unit, total self.curtopic = topic self._calibrateestimate(topic, now, pos) if now - self.lastprint >= self.refresh and self.topics: if self._oktoprint(now): self.lastprint = now self.show(now, topic, *self.topicstates[topic]) def closetopic(self, topic): with self._refreshlock: self.starttimes.pop(topic, None) self.startvals.pop(topic, None) self.topicstates.pop(topic, None) # reset the progress bar if this is the outermost topic if self.topics and self.topics[0] == topic and self.printed: self.complete() self.resetstate() # truncate the list of topics assuming all topics within # this one are also closed if topic in self.topics: self.topics = self.topics[: self.topics.index(topic)] # reset the last topic to the one we just unwound to, # so that higher-level topics will be stickier than # lower-level topics if self.topics: self.lasttopic = self.topics[-1] else: self.lasttopic = None