hgext/convert/p4.py
author Raphaël Gomès <rgomes@octobus.net>
Fri, 18 Feb 2022 14:27:43 +0100
branchstable
changeset 48796 c00d3ce4e94b
parent 47068 3af293735d0f
child 48875 6000f5b25c9b
permissions -rw-r--r--
branching: merge default into stable for 6.1 freeze
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# Perforce source for convert extension.
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#
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# Copyright 2009, Frank Kingswood <frank@kingswood-consulting.co.uk>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import marshal
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import re
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from mercurial.i18n import _
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from mercurial import (
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    error,
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    util,
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)
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from mercurial.utils import (
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    dateutil,
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    procutil,
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    stringutil,
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)
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from . import common
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def loaditer(f):
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    """Yield the dictionary objects generated by p4"""
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    try:
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        while True:
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            d = marshal.load(f)
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            if not d:
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                break
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            yield d
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    except EOFError:
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        pass
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def decodefilename(filename):
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    """Perforce escapes special characters @, #, *, or %
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    with %40, %23, %2A, or %25 respectively
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    >>> decodefilename(b'portable-net45%252Bnetcore45%252Bwp8%252BMonoAndroid')
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    'portable-net45%2Bnetcore45%2Bwp8%2BMonoAndroid'
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    >>> decodefilename(b'//Depot/Directory/%2525/%2523/%23%40.%2A')
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    '//Depot/Directory/%25/%23/#@.*'
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    """
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    replacements = [
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        (b'%2A', b'*'),
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        (b'%23', b'#'),
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        (b'%40', b'@'),
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        (b'%25', b'%'),
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    ]
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    for k, v in replacements:
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        filename = filename.replace(k, v)
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    return filename
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class p4_source(common.converter_source):
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    def __init__(self, ui, repotype, path, revs=None):
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        # avoid import cycle
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        from . import convcmd
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        super(p4_source, self).__init__(ui, repotype, path, revs=revs)
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        if b"/" in path and not path.startswith(b'//'):
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            raise common.NoRepo(
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                _(b'%s does not look like a P4 repository') % path
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            )
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        common.checktool(b'p4', abort=False)
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        self.revmap = {}
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        self.encoding = self.ui.config(
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            b'convert', b'p4.encoding', convcmd.orig_encoding
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        )
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        self.re_type = re.compile(
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            br"([a-z]+)?(text|binary|symlink|apple|resource|unicode|utf\d+)"
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            br"(\+\w+)?$"
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        )
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        self.re_keywords = re.compile(
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            br"\$(Id|Header|Date|DateTime|Change|File|Revision|Author)"
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            br":[^$\n]*\$"
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        )
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        self.re_keywords_old = re.compile(br"\$(Id|Header):[^$\n]*\$")
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        if revs and len(revs) > 1:
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            raise error.Abort(
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                _(
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                    b"p4 source does not support specifying "
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                    b"multiple revisions"
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                )
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            )
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    def setrevmap(self, revmap):
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        """Sets the parsed revmap dictionary.
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        Revmap stores mappings from a source revision to a target revision.
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        It is set in convertcmd.convert and provided by the user as a file
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        on the commandline.
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        Revisions in the map are considered beeing present in the
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        repository and ignored during _parse(). This allows for incremental
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        imports if a revmap is provided.
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        """
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        self.revmap = revmap
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    def _parse_view(self, path):
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        """Read changes affecting the path"""
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        cmd = b'p4 -G changes -s submitted %s' % procutil.shellquote(path)
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        stdout = procutil.popen(cmd, mode=b'rb')
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        p4changes = {}
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        for d in loaditer(stdout):
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            c = d.get(b"change", None)
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            if c:
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                p4changes[c] = True
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        return p4changes
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    def _parse(self, ui, path):
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        """Prepare list of P4 filenames and revisions to import"""
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        p4changes = {}
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        changeset = {}
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        files_map = {}
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        copies_map = {}
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        localname = {}
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        depotname = {}
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        heads = []
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        ui.status(_(b'reading p4 views\n'))
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        # read client spec or view
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        if b"/" in path:
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            p4changes.update(self._parse_view(path))
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            if path.startswith(b"//") and path.endswith(b"/..."):
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                views = {path[:-3]: b""}
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            else:
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                views = {b"//": b""}
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        else:
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            cmd = b'p4 -G client -o %s' % procutil.shellquote(path)
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            clientspec = marshal.load(procutil.popen(cmd, mode=b'rb'))
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            views = {}
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            for client in clientspec:
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                if client.startswith(b"View"):
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                    sview, cview = clientspec[client].split()
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                    p4changes.update(self._parse_view(sview))
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                    if sview.endswith(b"...") and cview.endswith(b"..."):
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                        sview = sview[:-3]
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                        cview = cview[:-3]
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                    cview = cview[2:]
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                    cview = cview[cview.find(b"/") + 1 :]
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                    views[sview] = cview
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        # list of changes that affect our source files
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        p4changes = sorted(p4changes.keys(), key=int)
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        # list with depot pathnames, longest first
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        vieworder = sorted(views.keys(), key=len, reverse=True)
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        # handle revision limiting
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        startrev = self.ui.config(b'convert', b'p4.startrev')
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        # now read the full changelists to get the list of file revisions
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        ui.status(_(b'collecting p4 changelists\n'))
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        lastid = None
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        for change in p4changes:
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            if startrev and int(change) < int(startrev):
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                continue
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            if self.revs and int(change) > int(self.revs[0]):
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   169
                continue
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            if change in self.revmap:
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                # Ignore already present revisions, but set the parent pointer.
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                lastid = change
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   173
                continue
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            if lastid:
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                parents = [lastid]
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            else:
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                parents = []
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   179
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            d = self._fetch_revision(change)
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            c = self._construct_commit(d, parents)
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   182
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            descarr = c.desc.splitlines(True)
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   184
            if len(descarr) > 0:
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                shortdesc = descarr[0].rstrip(b'\r\n')
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   186
            else:
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                shortdesc = b'**empty changelist description**'
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   188
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            t = b'%s %s' % (c.rev, shortdesc)
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            ui.status(stringutil.ellipsis(t, 80) + b'\n')
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            files = []
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   193
            copies = {}
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            copiedfiles = []
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   195
            i = 0
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            while (b"depotFile%d" % i) in d and (b"rev%d" % i) in d:
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                oldname = d[b"depotFile%d" % i]
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   198
                filename = None
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   199
                for v in vieworder:
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   200
                    if oldname.lower().startswith(v.lower()):
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   201
                        filename = decodefilename(views[v] + oldname[len(v) :])
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   202
                        break
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   203
                if filename:
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                    files.append((filename, d[b"rev%d" % i]))
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   205
                    depotname[filename] = oldname
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   206
                    if d.get(b"action%d" % i) == b"move/add":
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                        copiedfiles.append(filename)
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                    localname[oldname] = filename
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   209
                i += 1
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   210
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   211
            # Collect information about copied files
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   212
            for filename in copiedfiles:
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   213
                oldname = depotname[filename]
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   214
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   215
                flcmd = b'p4 -G filelog %s' % procutil.shellquote(oldname)
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                flstdout = procutil.popen(flcmd, mode=b'rb')
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                copiedfilename = None
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   219
                for d in loaditer(flstdout):
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   220
                    copiedoldname = None
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   221
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   222
                    i = 0
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   223
                    while (b"change%d" % i) in d:
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   224
                        if (
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   225
                            d[b"change%d" % i] == change
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                            and d[b"action%d" % i] == b"move/add"
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   227
                        ):
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   228
                            j = 0
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                            while (b"file%d,%d" % (i, j)) in d:
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                                if d[b"how%d,%d" % (i, j)] == b"moved from":
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                                    copiedoldname = d[b"file%d,%d" % (i, j)]
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   232
                                    break
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   233
                                j += 1
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   234
                        i += 1
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   235
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   236
                    if copiedoldname and copiedoldname in localname:
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   237
                        copiedfilename = localname[copiedoldname]
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   238
                        break
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   239
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   240
                if copiedfilename:
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   241
                    copies[filename] = copiedfilename
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   242
                else:
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   243
                    ui.warn(
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   244
                        _(b"cannot find source for copied file: %s@%s\n")
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   245
                        % (filename, change)
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   246
                    )
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   247
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   248
            changeset[change] = c
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            files_map[change] = files
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            copies_map[change] = copies
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            lastid = change
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        if lastid and len(changeset) > 0:
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            heads = [lastid]
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        return {
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            b'changeset': changeset,
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            b'files': files_map,
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            b'copies': copies_map,
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            b'heads': heads,
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            b'depotname': depotname,
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        }
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    @util.propertycache
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    def _parse_once(self):
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        return self._parse(self.ui, self.path)
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    @util.propertycache
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    def copies(self):
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        return self._parse_once[b'copies']
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    @util.propertycache
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    def files(self):
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        return self._parse_once[b'files']
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    @util.propertycache
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    def changeset(self):
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        return self._parse_once[b'changeset']
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    @util.propertycache
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    def heads(self):
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        return self._parse_once[b'heads']
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    @util.propertycache
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    def depotname(self):
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        return self._parse_once[b'depotname']
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    def getheads(self):
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        return self.heads
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    def getfile(self, name, rev):
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        cmd = b'p4 -G print %s' % procutil.shellquote(
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            b"%s#%s" % (self.depotname[name], rev)
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        )
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        lasterror = None
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        while True:
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            stdout = procutil.popen(cmd, mode=b'rb')
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            mode = None
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            contents = []
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            keywords = None
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   303
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            for d in loaditer(stdout):
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                code = d[b"code"]
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                data = d.get(b"data")
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   307
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                if code == b"error":
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                    # if this is the first time error happened
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                    # re-attempt getting the file
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   311
                    if not lasterror:
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                        lasterror = IOError(d[b"generic"], data)
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                        # this will exit inner-most for-loop
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   314
                        break
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   315
                    else:
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   316
                        raise lasterror
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   317
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   318
                elif code == b"stat":
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   319
                    action = d.get(b"action")
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   320
                    if action in [b"purge", b"delete", b"move/delete"]:
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   321
                        return None, None
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   322
                    p4type = self.re_type.match(d[b"type"])
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   323
                    if p4type:
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   324
                        mode = b""
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   325
                        flags = (p4type.group(1) or b"") + (
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   326
                            p4type.group(3) or b""
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   327
                        )
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   328
                        if b"x" in flags:
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   329
                            mode = b"x"
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   330
                        if p4type.group(2) == b"symlink":
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   331
                            mode = b"l"
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   332
                        if b"ko" in flags:
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   333
                            keywords = self.re_keywords_old
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   334
                        elif b"k" in flags:
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   335
                            keywords = self.re_keywords
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   336
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   337
                elif code == b"text" or code == b"binary":
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   338
                    contents.append(data)
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   339
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   340
                lasterror = None
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   341
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   342
            if not lasterror:
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   343
                break
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   344
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   345
        if mode is None:
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   346
            return None, None
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   347
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   348
        contents = b''.join(contents)
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   349
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   350
        if keywords:
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   351
            contents = keywords.sub(b"$\\1$", contents)
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   352
        if mode == b"l" and contents.endswith(b"\n"):
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   353
            contents = contents[:-1]
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   354
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   355
        return contents, mode
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   356
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   357
    def getchanges(self, rev, full):
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   358
        if full:
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   359
            raise error.Abort(_(b"convert from p4 does not support --full"))
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diff changeset
   360
        return self.files[rev], self.copies[rev], set()
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   361
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   362
    def _construct_commit(self, obj, parents=None):
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   363
        """
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   364
        Constructs a common.commit object from an unmarshalled
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   365
        `p4 describe` output
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   366
        """
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   367
        desc = self.recode(obj.get(b"desc", b""))
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   368
        date = (int(obj[b"time"]), 0)  # timezone not set
30603
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   369
        if parents is None:
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   370
            parents = []
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   371
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   372
        return common.commit(
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parents: 43076
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   373
            author=self.recode(obj[b"user"]),
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
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   374
            date=dateutil.datestr(date, b'%Y-%m-%d %H:%M:%S %1%2'),
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Augie Fackler <augie@google.com>
parents: 41759
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   375
            parents=parents,
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Augie Fackler <augie@google.com>
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   376
            desc=desc,
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   377
            branch=None,
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   378
            rev=obj[b'change'],
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parents: 43076
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   379
            extra={b"p4": obj[b'change'], b"convert_revision": obj[b'change']},
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parents: 41759
diff changeset
   380
        )
30603
db9e883566e8 convert: encapsulate commit data fetching and commit object creation
David Soria Parra <davidsp@fb.com>
parents: 30602
diff changeset
   381
db9e883566e8 convert: encapsulate commit data fetching and commit object creation
David Soria Parra <davidsp@fb.com>
parents: 30602
diff changeset
   382
    def _fetch_revision(self, rev):
db9e883566e8 convert: encapsulate commit data fetching and commit object creation
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parents: 30602
diff changeset
   383
        """Return an output of `p4 describe` including author, commit date as
db9e883566e8 convert: encapsulate commit data fetching and commit object creation
David Soria Parra <davidsp@fb.com>
parents: 30602
diff changeset
   384
        a dictionary."""
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   385
        cmd = b"p4 -G describe -s %s" % rev
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   386
        stdout = procutil.popen(cmd, mode=b'rb')
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David Soria Parra <davidsp@fb.com>
parents: 30602
diff changeset
   387
        return marshal.load(stdout)
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David Soria Parra <davidsp@fb.com>
parents: 30602
diff changeset
   388
7823
11efa41037e2 convert: Perforce source for conversion to Mercurial
Frank Kingswood <frank@kingswood-consulting.co.uk>
parents:
diff changeset
   389
    def getcommit(self, rev):
30604
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parents: 30603
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   390
        if rev in self.changeset:
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parents: 30603
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   391
            return self.changeset[rev]
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David Soria Parra <davidsp@fb.com>
parents: 30603
diff changeset
   392
        elif rev in self.revmap:
b654112a0119 convert: return commit objects for revisions in the revmap
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parents: 30603
diff changeset
   393
            d = self._fetch_revision(rev)
b654112a0119 convert: return commit objects for revisions in the revmap
David Soria Parra <davidsp@fb.com>
parents: 30603
diff changeset
   394
            return self._construct_commit(d, parents=None)
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David Soria Parra <davidsp@fb.com>
parents: 30603
diff changeset
   395
        raise error.Abort(
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   396
            _(b"cannot find %s in the revmap or parsed changesets") % rev
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Augie Fackler <augie@google.com>
parents: 41759
diff changeset
   397
        )
7823
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Frank Kingswood <frank@kingswood-consulting.co.uk>
parents:
diff changeset
   398
11efa41037e2 convert: Perforce source for conversion to Mercurial
Frank Kingswood <frank@kingswood-consulting.co.uk>
parents:
diff changeset
   399
    def gettags(self):
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902c89df94e3 convert: remove unused dictionaries
David Soria Parra <davidsp@fb.com>
parents: 30598
diff changeset
   400
        return {}
7823
11efa41037e2 convert: Perforce source for conversion to Mercurial
Frank Kingswood <frank@kingswood-consulting.co.uk>
parents:
diff changeset
   401
11efa41037e2 convert: Perforce source for conversion to Mercurial
Frank Kingswood <frank@kingswood-consulting.co.uk>
parents:
diff changeset
   402
    def getchangedfiles(self, rev, i):
8209
a1a5a57efe90 replace util.sort with sorted built-in
Matt Mackall <mpm@selenic.com>
parents: 8066
diff changeset
   403
        return sorted([x[0] for x in self.files[rev]])