mercurial/archival.py
author Gregory Szorc <gregory.szorc@gmail.com>
Sun, 20 Feb 2022 16:46:05 -0700
changeset 48882 640e1cb6a7de
parent 48875 6000f5b25c9b
child 48893 895085109842
permissions -rw-r--r--
archival: remove GzipFileWithTime This was required for Python 2 support, which we no longer need to support. Differential Revision: https://phab.mercurial-scm.org/D12285
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# archival.py - revision archival for mercurial
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#
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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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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import gzip
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import os
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import struct
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import tarfile
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import time
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import zipfile
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import zlib
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from .i18n import _
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from .node import nullrev
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from .pycompat import open
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from . import (
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    error,
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    formatter,
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    match as matchmod,
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    pycompat,
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    scmutil,
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    util,
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    vfs as vfsmod,
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)
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from .utils import stringutil
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stringio = util.stringio
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# from unzip source code:
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_UNX_IFREG = 0x8000
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_UNX_IFLNK = 0xA000
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def tidyprefix(dest, kind, prefix):
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    """choose prefix to use for names in archive.  make sure prefix is
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    safe for consumers."""
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    if prefix:
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        prefix = util.normpath(prefix)
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    else:
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        if not isinstance(dest, bytes):
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            raise ValueError(b'dest must be string if no prefix')
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        prefix = os.path.basename(dest)
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        lower = prefix.lower()
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        for sfx in exts.get(kind, []):
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            if lower.endswith(sfx):
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                prefix = prefix[: -len(sfx)]
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                break
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    lpfx = os.path.normpath(util.localpath(prefix))
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    prefix = util.pconvert(lpfx)
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    if not prefix.endswith(b'/'):
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        prefix += b'/'
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    # Drop the leading '.' path component if present, so Windows can read the
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    # zip files (issue4634)
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    if prefix.startswith(b'./'):
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        prefix = prefix[2:]
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    if prefix.startswith(b'../') or os.path.isabs(lpfx) or b'/../' in prefix:
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        raise error.Abort(_(b'archive prefix contains illegal components'))
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    return prefix
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exts = {
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    b'tar': [b'.tar'],
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    b'tbz2': [b'.tbz2', b'.tar.bz2'],
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    b'tgz': [b'.tgz', b'.tar.gz'],
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    b'zip': [b'.zip'],
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    b'txz': [b'.txz', b'.tar.xz'],
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}
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def guesskind(dest):
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    for kind, extensions in pycompat.iteritems(exts):
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        if any(dest.endswith(ext) for ext in extensions):
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            return kind
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    return None
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def _rootctx(repo):
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    # repo[0] may be hidden
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    for rev in repo:
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        return repo[rev]
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    return repo[nullrev]
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# {tags} on ctx includes local tags and 'tip', with no current way to limit
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# that to global tags.  Therefore, use {latesttag} as a substitute when
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# the distance is 0, since that will be the list of global tags on ctx.
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_defaultmetatemplate = br'''
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repo: {root}
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node: {ifcontains(rev, revset("wdir()"), "{p1node}{dirty}", "{node}")}
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branch: {branch|utf8}
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{ifeq(latesttagdistance, 0, join(latesttag % "tag: {tag}", "\n"),
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      separate("\n",
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               join(latesttag % "latesttag: {tag}", "\n"),
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               "latesttagdistance: {latesttagdistance}",
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               "changessincelatesttag: {changessincelatesttag}"))}
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'''[
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    1:
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]  # drop leading '\n'
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def buildmetadata(ctx):
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    '''build content of .hg_archival.txt'''
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    repo = ctx.repo()
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    opts = {
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        b'template': repo.ui.config(
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            b'experimental', b'archivemetatemplate', _defaultmetatemplate
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        )
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    }
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    out = util.stringio()
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    fm = formatter.formatter(repo.ui, out, b'archive', opts)
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    fm.startitem()
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    fm.context(ctx=ctx)
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    fm.data(root=_rootctx(repo).hex())
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    if ctx.rev() is None:
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        dirty = b''
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        if ctx.dirty(missing=True):
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            dirty = b'+'
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        fm.data(dirty=dirty)
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    fm.end()
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    return out.getvalue()
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class tarit(object):
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    """write archive to tar file or stream.  can write uncompressed,
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    or compress with gzip or bzip2."""
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    def __init__(self, dest, mtime, kind=b''):
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        self.mtime = mtime
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        self.fileobj = None
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        def taropen(mode, name=b'', fileobj=None):
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            if kind == b'gz':
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                mode = mode[0:1]
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                if not fileobj:
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                    fileobj = open(name, mode + b'b')
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                gzfileobj = gzip.GzipFile(
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                    name,
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                    pycompat.sysstr(mode + b'b'),
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                    zlib.Z_BEST_COMPRESSION,
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                    fileobj,
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                    mtime=mtime,
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                )
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                self.fileobj = gzfileobj
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                return (
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                    tarfile.TarFile.taropen(  # pytype: disable=attribute-error
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                        name, pycompat.sysstr(mode), gzfileobj
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                    )
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                )
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            else:
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                try:
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                    return tarfile.open(
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                        name, pycompat.sysstr(mode + kind), fileobj
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                    )
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                except tarfile.CompressionError as e:
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                    raise error.Abort(stringutil.forcebytestr(e))
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        if isinstance(dest, bytes):
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            self.z = taropen(b'w:', name=dest)
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        else:
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            self.z = taropen(b'w|', fileobj=dest)
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    def addfile(self, name, mode, islink, data):
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        name = pycompat.fsdecode(name)
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        i = tarfile.TarInfo(name)
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        i.mtime = self.mtime
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        i.size = len(data)
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        if islink:
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            i.type = tarfile.SYMTYPE
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            i.mode = 0o777
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            i.linkname = pycompat.fsdecode(data)
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            data = None
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            i.size = 0
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        else:
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            i.mode = mode
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            data = stringio(data)
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        self.z.addfile(i, data)
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    def done(self):
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        self.z.close()
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        if self.fileobj:
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            self.fileobj.close()
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class zipit(object):
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    """write archive to zip file or stream.  can write uncompressed,
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    or compressed with deflate."""
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    def __init__(self, dest, mtime, compress=True):
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        if isinstance(dest, bytes):
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            dest = pycompat.fsdecode(dest)
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        self.z = zipfile.ZipFile(
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            dest, 'w', compress and zipfile.ZIP_DEFLATED or zipfile.ZIP_STORED
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        )
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        # Python's zipfile module emits deprecation warnings if we try
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        # to store files with a date before 1980.
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        epoch = 315532800  # calendar.timegm((1980, 1, 1, 0, 0, 0, 1, 1, 0))
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        if mtime < epoch:
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            mtime = epoch
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        self.mtime = mtime
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        self.date_time = time.gmtime(mtime)[:6]
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    def addfile(self, name, mode, islink, data):
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        i = zipfile.ZipInfo(pycompat.fsdecode(name), self.date_time)
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        i.compress_type = self.z.compression  # pytype: disable=attribute-error
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        # unzip will not honor unix file modes unless file creator is
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        # set to unix (id 3).
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        i.create_system = 3
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        ftype = _UNX_IFREG
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        if islink:
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            mode = 0o777
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            ftype = _UNX_IFLNK
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        i.external_attr = (mode | ftype) << 16
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        # add "extended-timestamp" extra block, because zip archives
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        # without this will be extracted with unexpected timestamp,
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        # if TZ is not configured as GMT
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        i.extra += struct.pack(
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            b'<hhBl',
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            0x5455,  # block type: "extended-timestamp"
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            1 + 4,  # size of this block
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            1,  # "modification time is present"
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            int(self.mtime),
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        )  # last modification (UTC)
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        self.z.writestr(i, data)
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    def done(self):
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        self.z.close()
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class fileit(object):
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    '''write archive as files in directory.'''
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    def __init__(self, name, mtime):
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        self.basedir = name
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parents: 31216
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        self.opener = vfsmod.vfs(self.basedir)
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        self.mtime = mtime
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    def addfile(self, name, mode, islink, data):
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        if islink:
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            self.opener.symlink(data, name)
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            return
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        f = self.opener(name, b"w", atomictemp=False)
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parents: 4731
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   256
        f.write(data)
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Greg Ward <greg@gerg.ca>
parents: 13970
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   257
        f.close()
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        destfile = os.path.join(self.basedir, name)
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   259
        os.chmod(destfile, mode)
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parents: 33545
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   260
        if self.mtime is not None:
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   261
            os.utime(destfile, (self.mtime, self.mtime))
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    def done(self):
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   264
        pass
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parents:
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   266
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archivers = {
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   268
    b'files': fileit,
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   269
    b'tar': tarit,
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parents: 43076
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   270
    b'tbz2': lambda name, mtime: tarit(name, mtime, b'bz2'),
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   271
    b'tgz': lambda name, mtime: tarit(name, mtime, b'gz'),
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   272
    b'txz': lambda name, mtime: tarit(name, mtime, b'xz'),
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    b'uzip': lambda name, mtime: zipit(name, mtime, False),
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
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    b'zip': zipit,
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   275
}
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   276
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def archive(
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    repo,
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    dest,
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   281
    node,
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   282
    kind,
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   283
    decode=True,
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   284
    match=None,
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   285
    prefix=b'',
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   286
    mtime=None,
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   287
    subrepos=False,
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Augie Fackler <augie@google.com>
parents: 42940
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   288
):
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Augie Fackler <raf@durin42.com>
parents: 45083
diff changeset
   289
    """create archive of repo as it was at node.
2112
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parents:
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   290
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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   291
    dest can be name of directory, name of archive file, or file
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parents:
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   292
    object to write archive to.
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parents:
diff changeset
   293
2b03c6733efa add "archive" command, like "cvs export" only better.
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parents:
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   294
    kind is type of archive to create.
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parents:
diff changeset
   295
2b03c6733efa add "archive" command, like "cvs export" only better.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   296
    decode tells whether to put files through decode filters from
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parents:
diff changeset
   297
    hgrc.
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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   298
40407
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Martin von Zweigbergk <martinvonz@google.com>
parents: 40247
diff changeset
   299
    match is a matcher to filter names of files to write to archive.
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parents:
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   300
35202
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James May <james.may@draeger.com>
parents: 33545
diff changeset
   301
    prefix is name of path to put before every archive member.
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James May <james.may@draeger.com>
parents: 33545
diff changeset
   302
760fef6aca74 archive: pass thru mtime for directory archives, like other archive types do
James May <james.may@draeger.com>
parents: 33545
diff changeset
   303
    mtime is the modified time, in seconds, or None to use the changeset time.
760fef6aca74 archive: pass thru mtime for directory archives, like other archive types do
James May <james.may@draeger.com>
parents: 33545
diff changeset
   304
760fef6aca74 archive: pass thru mtime for directory archives, like other archive types do
James May <james.may@draeger.com>
parents: 33545
diff changeset
   305
    subrepos tells whether to include subrepos.
45942
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Augie Fackler <raf@durin42.com>
parents: 45083
diff changeset
   306
    """
2112
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parents:
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   307
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   308
    if kind == b'txz' and not pycompat.ispy3:
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   309
        raise error.Abort(_(b'xz compression is only available in Python 3'))
42940
c04e0836f039 archive: add XZ support if built with Python 3
David Demelier <markand@malikania.fr>
parents: 41631
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   310
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   311
    if kind == b'files':
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parents: 11557
diff changeset
   312
        if prefix:
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parents: 43076
diff changeset
   313
            raise error.Abort(_(b'cannot give prefix when archiving to files'))
11558
d8f6458434ec archival: remove prefix argument from archivers
Martin Geisler <mg@lazybytes.net>
parents: 11557
diff changeset
   314
    else:
d8f6458434ec archival: remove prefix argument from archivers
Martin Geisler <mg@lazybytes.net>
parents: 11557
diff changeset
   315
        prefix = tidyprefix(dest, kind, prefix)
d8f6458434ec archival: remove prefix argument from archivers
Martin Geisler <mg@lazybytes.net>
parents: 11557
diff changeset
   316
4951
667290b6c95e archive: delay extraction of file revisions
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4831
diff changeset
   317
    def write(name, mode, islink, getdata):
667290b6c95e archive: delay extraction of file revisions
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parents: 4831
diff changeset
   318
        data = getdata()
2112
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   319
        if decode:
4005
656e06eebda7 replace filehandle version of wwrite with wwritedata
Matt Mackall <mpm@selenic.com>
parents: 3968
diff changeset
   320
            data = repo.wwritedata(name, data)
11558
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Martin Geisler <mg@lazybytes.net>
parents: 11557
diff changeset
   321
        archiver.addfile(prefix + name, mode, islink, data)
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   322
6019
b70a530bdb93 cleanly abort on unknown archive type (issue966)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 4951
diff changeset
   323
    if kind not in archivers:
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parents: 43076
diff changeset
   324
        raise error.Abort(_(b"unknown archive type '%s'") % kind)
6749
51b0e799352f manifest: remove execf/linkf methods
Matt Mackall <mpm@selenic.com>
parents: 6747
diff changeset
   325
51b0e799352f manifest: remove execf/linkf methods
Matt Mackall <mpm@selenic.com>
parents: 6747
diff changeset
   326
    ctx = repo[node]
11558
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Martin Geisler <mg@lazybytes.net>
parents: 11557
diff changeset
   327
    archiver = archivers[kind](dest, mtime or ctx.date()[0])
6749
51b0e799352f manifest: remove execf/linkf methods
Matt Mackall <mpm@selenic.com>
parents: 6747
diff changeset
   328
40408
997997eb8367 archive: create alwaysmatcher when no matcher provided
Martin von Zweigbergk <martinvonz@google.com>
parents: 40407
diff changeset
   329
    if not match:
997997eb8367 archive: create alwaysmatcher when no matcher provided
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parents: 40407
diff changeset
   330
        match = scmutil.matchall(repo)
997997eb8367 archive: create alwaysmatcher when no matcher provided
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parents: 40407
diff changeset
   331
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Augie Fackler <augie@google.com>
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diff changeset
   332
    if repo.ui.configbool(b"ui", b"archivemeta"):
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   333
        name = b'.hg_archival.txt'
40408
997997eb8367 archive: create alwaysmatcher when no matcher provided
Martin von Zweigbergk <martinvonz@google.com>
parents: 40407
diff changeset
   334
        if match(name):
25658
e93036747902 global: mass rewrite to use modern octal syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents: 25615
diff changeset
   335
            write(name, 0o644, False, lambda: buildmetadata(ctx))
9614
58edd448da4f archive: add branch and tag informations to the .hg_archival.txt file
Gilles Moris <gilles.moris@free.fr>
parents: 8778
diff changeset
   336
44284
e786d69c665d archival: use walk() instead of matches() on manifest
Augie Fackler <augie@google.com>
parents: 43506
diff changeset
   337
    files = list(ctx.manifest().walk(match))
16919
51932c835b74 archive: make progress only show files that are actually archived
Thomas Arendsen Hein <thomas@intevation.de>
parents: 15057
diff changeset
   338
    total = len(files)
18967
88d1b59f6906 archive: raise error.Abort if the file pattern matches no files
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 18364
diff changeset
   339
    if total:
88d1b59f6906 archive: raise error.Abort if the file pattern matches no files
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 18364
diff changeset
   340
        files.sort()
43076
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Augie Fackler <augie@google.com>
parents: 42940
diff changeset
   341
        scmutil.prefetchfiles(
45072
a56ba57c837d scmutil: allowing different files to be prefetched per revision
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 44577
diff changeset
   342
            repo, [(ctx.rev(), scmutil.matchfiles(repo, files))]
43076
2372284d9457 formatting: blacken the codebase
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parents: 42940
diff changeset
   343
        )
2372284d9457 formatting: blacken the codebase
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parents: 42940
diff changeset
   344
        progress = repo.ui.makeprogress(
43077
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parents: 43076
diff changeset
   345
            _(b'archiving'), unit=_(b'files'), total=total
43076
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parents: 42940
diff changeset
   346
        )
38381
1a2ff11e8a88 archival: use progress helper
Martin von Zweigbergk <martinvonz@google.com>
parents: 37762
diff changeset
   347
        progress.update(0)
1a2ff11e8a88 archival: use progress helper
Martin von Zweigbergk <martinvonz@google.com>
parents: 37762
diff changeset
   348
        for f in files:
18967
88d1b59f6906 archive: raise error.Abort if the file pattern matches no files
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 18364
diff changeset
   349
            ff = ctx.flags(f)
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   350
            write(f, b'x' in ff and 0o755 or 0o644, b'l' in ff, ctx[f].data)
38381
1a2ff11e8a88 archival: use progress helper
Martin von Zweigbergk <martinvonz@google.com>
parents: 37762
diff changeset
   351
            progress.increment(item=f)
1a2ff11e8a88 archival: use progress helper
Martin von Zweigbergk <martinvonz@google.com>
parents: 37762
diff changeset
   352
        progress.complete()
12323
f00953d9533c subrepo: add support for 'hg archive'
Martin Geisler <mg@aragost.com>
parents: 12321
diff changeset
   353
f00953d9533c subrepo: add support for 'hg archive'
Martin Geisler <mg@aragost.com>
parents: 12321
diff changeset
   354
    if subrepos:
18364
6252b4f1c4b4 subrepos: process subrepos in sorted order
Mads Kiilerich <mads@kiilerich.com>
parents: 18344
diff changeset
   355
        for subpath in sorted(ctx.substate):
25601
3ec8351fa6ed archive: support 'wdir()'
Matt Harbison <matt_harbison@yahoo.com>
parents: 25149
diff changeset
   356
            sub = ctx.workingsub(subpath)
40407
3d76a8e627a6 archive: change "matcnfn" argument to a real matcher
Martin von Zweigbergk <martinvonz@google.com>
parents: 40247
diff changeset
   357
            submatch = matchmod.subdirmatcher(subpath, match)
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   358
            subprefix = prefix + subpath + b'/'
41631
3d9d5e612e67 subrepo: adjust subrepo prefix before calling subrepo.archive() (API)
Martin von Zweigbergk <martinvonz@google.com>
parents: 41208
diff changeset
   359
            total += sub.archive(archiver, subprefix, submatch, decode)
18967
88d1b59f6906 archive: raise error.Abort if the file pattern matches no files
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 18364
diff changeset
   360
88d1b59f6906 archive: raise error.Abort if the file pattern matches no files
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 18364
diff changeset
   361
    if total == 0:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   362
        raise error.Abort(_(b'no files match the archive pattern'))
12323
f00953d9533c subrepo: add support for 'hg archive'
Martin Geisler <mg@aragost.com>
parents: 12321
diff changeset
   363
2112
2b03c6733efa add "archive" command, like "cvs export" only better.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   364
    archiver.done()
18967
88d1b59f6906 archive: raise error.Abort if the file pattern matches no files
Angel Ezquerra <angel.ezquerra@gmail.com>
parents: 18364
diff changeset
   365
    return total