# 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 email.parser as emailparser

import os

import shutil

import stat

import tempfile

from mercurial.i18n import _

from mercurial import (

    encoding,

    error,

    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.date = None

            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)

            raise common.NoRepo(

            )

        # Could use checktool, but we want to check for baz or tla.

        self.execmd = None

        else:

            else:

        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.catlogparser = emailparser.Parser()

        self.encoding = encoding.encoding

        self.archives = []

    def before(self):

        # Get registered archives

        self.archives = [

        ]

        else:

        self.treeversion = output.strip()

        # Get name of temporary directory

        self.tmppath = os.path.join(

        )

        # Generate parents dictionary

        self.parents[None] = []

        treeversion = self.treeversion

        child = None

        while treeversion:

            if archive not in self.archives:

                self.ui.status(

                    _(

                    )

                    % archive

                )

                break

            # Get the complete list of revisions for that tree version

            self.checkexit(

            )

            # 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

                if status:

                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:

                    )

                    break

                # If we reached a base-0 revision w/o any continuation-of

                # header, it means the tree history ends here.

                    break

    def after(self):

        shutil.rmtree(self.tmppath, ignore_errors=True)

    def getheads(self):

        return self.parents[None]

    def getfile(self, name, rev):

        if rev != self.lastrev:

        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:

        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]

        return os.system(pycompat.rapply(procutil.tonativestr, cmdline))

    def _update(self, 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(

            )

            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:

            else:

        else:

            data = util.readfile(os.path.join(self.tmppath, name))

        return data, mode

    def _exclude(self, name):

        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.checkexit(output)

        files = self._readcontents(self.tmppath)

        self.changes[rev].add_files += files

    def _stripbasepath(self, path):

            return path[2:]

        return path

    def _parsecatlog(self, data, rev):

        try:

            catlog = self.catlogparser.parsestr(data)

            # Commit date

            self.changes[rev].date = dateutil.datestr(

            )

            # Commit author

            # Commit description

            )

            self.changes[rev].summary = self.recode(self.changes[rev].summary)

            # Commit revision origin when dealing with a branch or tag

                self.changes[rev].continuationof = self.recode(

                )

        except Exception:

    def _parsechangeset(self, data, rev):

        for l in data:

            l = l.strip()

            # Added file (ignore added directory)

                file = self._stripbasepath(l[1:].strip())

                if not self._exclude(file):

                    self.changes[rev].add_files.append(file)

            # Deleted file (ignore deleted directory)

                file = self._stripbasepath(l[1:].strip())

                if not self._exclude(file):

                    self.changes[rev].del_files.append(file)

            # Modified binary file

                file = self._stripbasepath(l[2:].strip())

                if not self._exclude(file):

                    self.changes[rev].mod_files.append(file)

            # Modified link

                file = self._stripbasepath(l[3:].strip())

                if not self._exclude(file):

                    self.changes[rev].mod_files.append(file)

            # Modified file

                file = self._stripbasepath(l[1:].strip())

                if not self._exclude(file):

                    self.changes[rev].mod_files.append(file)

            # Renamed file (or link)

                if len(files) == 1: