# gnuarch.py - GNU Arch support for the convert extension
#
# Copyright 2008, 2009 Aleix Conchillo Flaque <aleix@member.fsf.org>
# 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.
from __future__ import absolute_import
import os
import shutil
import stat
import tempfile
from mercurial.i18n import _
from mercurial import (
encoding,
error,
mail,
pycompat,
util,
)
from mercurial.utils import (
dateutil,
procutil,
)
from . import common
class gnuarch_source(common.converter_source, common.commandline):
class gnuarch_rev(object):
def __init__(self, rev):
self.rev = rev
self.summary = b''
self.date = None
self.author = b''
self.continuationof = None
self.add_files = []
self.mod_files = []
self.del_files = []
self.ren_files = {}
self.ren_dirs = {}
def __init__(self, ui, repotype, path, revs=None):
super(gnuarch_source, self).__init__(ui, repotype, path, revs=revs)
if not os.path.exists(os.path.join(path, b'{arch}')):
raise common.NoRepo(
_(b"%s does not look like a GNU Arch repository") % path
)
# Could use checktool, but we want to check for baz or tla.
self.execmd = None
if procutil.findexe(b'baz'):
self.execmd = b'baz'
else:
if procutil.findexe(b'tla'):
self.execmd = b'tla'
else:
raise error.Abort(_(b'cannot find a GNU Arch tool'))
common.commandline.__init__(self, ui, self.execmd)
self.path = os.path.realpath(path)
self.tmppath = None
self.treeversion = None
self.lastrev = None
self.changes = {}
self.parents = {}
self.tags = {}
self.encoding = encoding.encoding
self.archives = []
def before(self):
# Get registered archives
self.archives = [
i.rstrip(b'\n') for i in self.runlines0(b'archives', b'-n')
]
if self.execmd == b'tla':
output = self.run0(b'tree-version', self.path)
else:
output = self.run0(b'tree-version', b'-d', self.path)
self.treeversion = output.strip()
# Get name of temporary directory
version = self.treeversion.split(b'/')
self.tmppath = os.path.join(
pycompat.fsencode(tempfile.gettempdir()), b'hg-%s' % version[1]
)
# Generate parents dictionary
self.parents[None] = []
treeversion = self.treeversion
child = None
while treeversion:
self.ui.status(_(b'analyzing tree version %s...\n') % treeversion)
archive = treeversion.split(b'/')[0]
if archive not in self.archives:
self.ui.status(
_(
b'tree analysis stopped because it points to '
b'an unregistered archive %s...\n'
)
% archive
)
break
# Get the complete list of revisions for that tree version
output, status = self.runlines(
b'revisions', b'-r', b'-f', treeversion
)
self.checkexit(
status, b'failed retrieving revisions for %s' % treeversion
)
# No new iteration unless a revision has a continuation-of header
treeversion = None
for l in output:
rev = l.strip()
self.changes[rev] = self.gnuarch_rev(rev)
self.parents[rev] = []
# Read author, date and summary
catlog, status = self.run(b'cat-log', b'-d', self.path, rev)
if status:
catlog = self.run0(b'cat-archive-log', rev)
self._parsecatlog(catlog, rev)
# Populate the parents map
self.parents[child].append(rev)
# Keep track of the current revision as the child of the next
# revision scanned
child = rev
# Check if we have to follow the usual incremental history
# or if we have to 'jump' to a different treeversion given
# by the continuation-of header.
if self.changes[rev].continuationof:
treeversion = b'--'.join(
self.changes[rev].continuationof.split(b'--')[:-1]
)
break
# If we reached a base-0 revision w/o any continuation-of
# header, it means the tree history ends here.
if rev[-6:] == b'base-0':
break
def after(self):
self.ui.debug(b'cleaning up %s\n' % self.tmppath)
shutil.rmtree(self.tmppath, ignore_errors=True)
def getheads(self):
return self.parents[None]
def getfile(self, name, rev):
if rev != self.lastrev:
raise error.Abort(_(b'internal calling inconsistency'))
if not os.path.lexists(os.path.join(self.tmppath, name)):
return None, None
return self._getfile(name, rev)
def getchanges(self, rev, full):
if full:
raise error.Abort(_(b"convert from arch does not support --full"))
self._update(rev)
changes = []
copies = {}
for f in self.changes[rev].add_files:
changes.append((f, rev))
for f in self.changes[rev].mod_files:
changes.append((f, rev))
for f in self.changes[rev].del_files:
changes.append((f, rev))
for src in self.changes[rev].ren_files:
to = self.changes[rev].ren_files[src]
changes.append((src, rev))
changes.append((to, rev))
copies[to] = src
for src in self.changes[rev].ren_dirs:
to = self.changes[rev].ren_dirs[src]
chgs, cps = self._rendirchanges(src, to)
changes += [(f, rev) for f in chgs]
copies.update(cps)
self.lastrev = rev
return sorted(set(changes)), copies, set()
def getcommit(self, rev):
changes = self.changes[rev]
return common.commit(
author=changes.author,
date=changes.date,
desc=changes.summary,
parents=self.parents[rev],
rev=rev,
)
def gettags(self):
return self.tags
def _execute(self, cmd, *args, **kwargs):
cmdline = [self.execmd, cmd]
cmdline += args
cmdline = [procutil.shellquote(arg) for arg in cmdline]
bdevnull = pycompat.bytestr(os.devnull)
cmdline += [b'>', bdevnull, b'2>', bdevnull]
cmdline = b' '.join(cmdline)
self.ui.debug(cmdline, b'\n')
return os.system(pycompat.rapply(procutil.tonativestr, cmdline))
def _update(self, rev):
self.ui.debug(b'applying revision %s...\n' % rev)
changeset, status = self.runlines(b'replay', b'-d', self.tmppath, rev)
if status:
# Something went wrong while merging (baz or tla
# issue?), get latest revision and try from there
shutil.rmtree(self.tmppath, ignore_errors=True)
self._obtainrevision(rev)
else:
old_rev = self.parents[rev][0]
self.ui.debug(
b'computing changeset between %s and %s...\n' % (old_rev, rev)
)
self._parsechangeset(changeset, rev)
def _getfile(self, name, rev):
mode = os.lstat(os.path.join(self.tmppath, name)).st_mode
if stat.S_ISLNK(mode):
data = util.readlink(os.path.join(self.tmppath, name))
if mode:
mode = b'l'
else:
mode = b''
else:
data = util.readfile(os.path.join(self.tmppath, name))
mode = (mode & 0o111) and b'x' or b''
return data, mode
def _exclude(self, name):
exclude = [b'{arch}', b'.arch-ids', b'.arch-inventory']
for exc in exclude:
if name.find(exc) != -1:
return True
return False
def _readcontents(self, path):
files = []
contents = os.listdir(path)
while len(contents) > 0:
c = contents.pop()
p = os.path.join(path, c)
# os.walk could be used, but here we avoid internal GNU
# Arch files and directories, thus saving a lot time.
if not self._exclude(p):
if os.path.isdir(p):
contents += [os.path.join(c, f) for f in os.listdir(p)]
else:
files.append(c)
return files
def _rendirchanges(self, src, dest):
changes = []
copies = {}
files = self._readcontents(os.path.join(self.tmppath, dest))
for f in files:
s = os.path.join(src, f)
d = os.path.join(dest, f)
changes.append(s)
changes.append(d)
copies[d] = s
return changes, copies
def _obtainrevision(self, rev):
self.ui.debug(b'obtaining revision %s...\n' % rev)
output = self._execute(b'get', rev, self.tmppath)
self.checkexit(output)
self.ui.debug(b'analyzing revision %s...\n' % rev)
files = self._readcontents(self.tmppath)
self.changes[rev].add_files += files
def _stripbasepath(self, path):
if path.startswith(b'./'):
return path[2:]
return path
def _parsecatlog(self, data, rev):
try:
catlog = mail.parsebytes(data)
# Commit date
self.changes[rev].date = dateutil.datestr(
dateutil.strdate(catlog['Standard-date'], b'%Y-%m-%d %H:%M:%S')
)
# Commit author
self.changes[rev].author = self.recode(catlog['Creator'])
# Commit description
self.changes[rev].summary = b'\n\n'.join(
(
self.recode(catlog['Summary']),
self.recode(catlog.get_payload()),
)
)
self.changes[rev].summary = self.recode(self.changes[rev].summary)
# Commit revision origin when dealing with a branch or tag
if 'Continuation-of' in catlog:
self.changes[rev].continuationof = self.recode(
catlog['Continuation-of']
)
except Exception:
raise error.Abort(_(b'could not parse cat-log of %s') % rev)
def _parsechangeset(self, data, rev):
for l in data:
l = l.strip()
# Added file (ignore added directory)
if l.startswith(b'A') and not l.startswith(b'A/'):
file = self._stripbasepath(l[1:].strip())
if not self._exclude(file):
self.changes[rev].add_files.append(file)
# Deleted file (ignore deleted directory)
elif l.startswith(b'D') and not l.startswith(b'D/'):
file = self._stripbasepath(l[1:].strip())
if not self._exclude(file):
self.changes[rev].del_files.append(file)
# Modified binary file
elif l.startswith(b'Mb'):
file = self._stripbasepath(l[2:].strip())
if not self._exclude(file):
self.changes[rev].mod_files.append(file)
# Modified link
elif l.startswith(b'M->'):
file = self._stripbasepath(l[3:].strip())
if not self._exclude(file):
self.changes[rev].mod_files.append(file)
# Modified file
elif l.startswith(b'M'):
file = self._stripbasepath(l[1:].strip())
if not self._exclude(file):
self.changes[rev].mod_files.append(file)
# Renamed file (or link)
elif l.startswith(b'=>'):
files = l[2:].strip().split(b' ')
if len(files) == 1:
files = l[2:].strip().split(b'\t')
src = self._stripbasepath(files[0])
dst = self._stripbasepath(files[1])
if not self._exclude(src) and not self._exclude(dst):
self.changes[rev].ren_files[src] = dst
# Conversion from file to link or from link to file (modified)
elif l.startswith(b'ch'):
file = self._stripbasepath(l[2:].strip())
if not self._exclude(file):
self.changes[rev].mod_files.append(file)
# Renamed directory
elif l.startswith(b'/>'):
dirs = l[2:].strip().split(b' ')
if len(dirs) == 1:
dirs = l[2:].strip().split(b'\t')
src = self._stripbasepath(dirs[0])
dst = self._stripbasepath(dirs[1])
if not self._exclude(src) and not self._exclude(dst):
self.changes[rev].ren_dirs[src] = dst