profiler: flush after writing the profiler output
Otherwise, the profiler output might only partially appears until the next flush
of the buffer. Since profiling often happens for long operation, the next flush
can be a long time away.
# darcs.py - darcs support for the convert extension
#
# Copyright 2007-2009 Olivia Mackall <olivia@selenic.com> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import os
import re
import shutil
from xml.etree.ElementTree import (
ElementTree,
XMLParser,
)
from mercurial.i18n import _
from mercurial import (
error,
pycompat,
util,
)
from mercurial.utils import dateutil
from . import common
NoRepo = common.NoRepo
class darcs_source(common.converter_source, common.commandline):
def __init__(self, ui, repotype, path, revs=None):
common.converter_source.__init__(self, ui, repotype, path, revs=revs)
common.commandline.__init__(self, ui, b'darcs')
# check for _darcs, ElementTree so that we can easily skip
# test-convert-darcs if ElementTree is not around
if not os.path.exists(os.path.join(path, b'_darcs')):
raise NoRepo(_(b"%s does not look like a darcs repository") % path)
common.checktool(b'darcs')
version = self.run0(b'--version').splitlines()[0].strip()
if version < b'2.1':
raise error.Abort(
_(b'darcs version 2.1 or newer needed (found %r)') % version
)
if "ElementTree" not in globals():
raise error.Abort(_(b"Python ElementTree module is not available"))
self.path = os.path.realpath(path)
self.lastrev = None
self.changes = {}
self.parents = {}
self.tags = {}
# Check darcs repository format
format = self.format()
if format:
if format in (b'darcs-1.0', b'hashed'):
raise NoRepo(
_(
b"%s repository format is unsupported, "
b"please upgrade"
)
% format
)
else:
self.ui.warn(_(b'failed to detect repository format!'))
def before(self):
self.tmppath = pycompat.mkdtemp(
prefix=b'convert-' + os.path.basename(self.path) + b'-'
)
output, status = self.run(b'init', repodir=self.tmppath)
self.checkexit(status)
tree = self.xml(
b'changes', xml_output=True, summary=True, repodir=self.path
)
tagname = None
child = None
for elt in tree.findall('patch'):
node = self.recode(elt.get('hash'))
name = self.recode(elt.findtext('name', ''))
if name.startswith(b'TAG '):
tagname = name[4:].strip()
elif tagname is not None:
self.tags[tagname] = node
tagname = None
self.changes[node] = elt
self.parents[child] = [node]
child = node
self.parents[child] = []
def after(self):
self.ui.debug(b'cleaning up %s\n' % self.tmppath)
shutil.rmtree(self.tmppath, ignore_errors=True)
def recode(self, s, encoding=None):
if isinstance(s, str):
# XMLParser returns unicode objects for anything it can't
# encode into ASCII. We convert them back to str to get
# recode's normal conversion behavior.
s = s.encode('latin-1')
return super(darcs_source, self).recode(s, encoding)
def xml(self, cmd, **kwargs):
# NOTE: darcs is currently encoding agnostic and will print
# patch metadata byte-for-byte, even in the XML changelog.
etree = ElementTree()
# While we are decoding the XML as latin-1 to be as liberal as
# possible, etree will still raise an exception if any
# non-printable characters are in the XML changelog.
parser = XMLParser(encoding='latin-1')
p = self._run(cmd, **kwargs)
etree.parse(p.stdout, parser=parser)
p.wait()
self.checkexit(p.returncode)
return etree.getroot()
def format(self):
output, status = self.run(b'show', b'repo', repodir=self.path)
self.checkexit(status)
m = re.search(br'^\s*Format:\s*(.*)$', output, re.MULTILINE)
if not m:
return None
return b','.join(sorted(f.strip() for f in m.group(1).split(b',')))
def manifest(self):
man = []
output, status = self.run(
b'show', b'files', no_directories=True, repodir=self.tmppath
)
self.checkexit(status)
for line in output.split(b'\n'):
path = line[2:]
if path:
man.append(path)
return man
def getheads(self):
return self.parents[None]
def getcommit(self, rev):
elt = self.changes[rev]
dateformat = b'%a %b %d %H:%M:%S %Z %Y'
date = dateutil.strdate(self.recode(elt.get('local_date')), dateformat)
desc = elt.findtext('name') + '\n' + elt.findtext('comment', '')
# etree can return unicode objects for name, comment, and author,
# so recode() is used to ensure str objects are emitted.
newdateformat = b'%Y-%m-%d %H:%M:%S %1%2'
return common.commit(
author=self.recode(elt.get('author')),
date=dateutil.datestr(date, newdateformat),
desc=self.recode(desc).strip(),
parents=self.parents[rev],
)
def pull(self, rev):
output, status = self.run(
b'pull',
self.path,
all=True,
match=b'hash %s' % self.recode(rev),
no_test=True,
no_posthook=True,
external_merge=b'/bin/false',
repodir=self.tmppath,
)
if status:
if output.find(b'We have conflicts in') == -1:
self.checkexit(status, output)
output, status = self.run(b'revert', all=True, repodir=self.tmppath)
self.checkexit(status, output)
def getchanges(self, rev, full):
if full:
raise error.Abort(_(b"convert from darcs does not support --full"))
copies = {}
changes = []
man = None
for elt in self.changes[rev].find('summary'):
if elt.tag in ('add_directory', 'remove_directory'):
continue
if elt.tag == 'move':
if man is None:
man = self.manifest()
source = self.recode(elt.get('from'))
dest = self.recode(elt.get('to'))
if source in man:
# File move
changes.append((source, rev))
changes.append((dest, rev))
copies[dest] = source
else:
# Directory move, deduce file moves from manifest
source = source + b'/'
for f in man:
if not f.startswith(source):
continue
fdest = dest + b'/' + f[len(source) :]
changes.append((f, rev))
changes.append((fdest, rev))
copies[fdest] = f
else:
changes.append((self.recode(elt.text.strip()), rev))
self.pull(rev)
self.lastrev = rev
return sorted(changes), copies, set()
def getfile(self, name, rev):
if rev != self.lastrev:
raise error.Abort(_(b'internal calling inconsistency'))
path = os.path.join(self.tmppath, name)
try:
data = util.readfile(path)
mode = os.lstat(path).st_mode
except FileNotFoundError:
return None, None
mode = (mode & 0o111) and b'x' or b''
return data, mode
def gettags(self):
return self.tags