Mercurial > hg
annotate mercurial/archival.py @ 44475:b7ca03dff14c stable
gzip: use the stdlib version with python 3 (issue6284)
It turned out that the stdlib gained the feature we missed in python 3.1. We can
now use it directly.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 10 Mar 2020 18:54:44 +0100 |
parents | a23b859ad17d |
children | f8427841c8fc |
rev | line source |
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1 # archival.py - revision archival for mercurial |
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2 # |
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import gzip |
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11 import os |
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12 import struct |
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13 import tarfile |
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14 import time |
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15 import zipfile |
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16 import zlib |
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17 |
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18 from .i18n import _ |
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19 from .node import nullrev |
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20 from .pycompat import open |
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21 |
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22 from . import ( |
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23 error, |
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24 formatter, |
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25 match as matchmod, |
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26 pycompat, |
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27 scmutil, |
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28 util, |
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29 vfs as vfsmod, |
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30 ) |
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31 |
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32 stringio = util.stringio |
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33 |
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34 # from unzip source code: |
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35 _UNX_IFREG = 0x8000 |
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36 _UNX_IFLNK = 0xA000 |
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37 |
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38 |
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39 def tidyprefix(dest, kind, prefix): |
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40 '''choose prefix to use for names in archive. make sure prefix is |
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41 safe for consumers.''' |
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42 |
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43 if prefix: |
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44 prefix = util.normpath(prefix) |
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45 else: |
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46 if not isinstance(dest, bytes): |
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47 raise ValueError(b'dest must be string if no prefix') |
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48 prefix = os.path.basename(dest) |
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49 lower = prefix.lower() |
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50 for sfx in exts.get(kind, []): |
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51 if lower.endswith(sfx): |
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52 prefix = prefix[: -len(sfx)] |
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53 break |
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54 lpfx = os.path.normpath(util.localpath(prefix)) |
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55 prefix = util.pconvert(lpfx) |
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56 if not prefix.endswith(b'/'): |
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57 prefix += b'/' |
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58 # Drop the leading '.' path component if present, so Windows can read the |
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59 # zip files (issue4634) |
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60 if prefix.startswith(b'./'): |
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61 prefix = prefix[2:] |
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62 if prefix.startswith(b'../') or os.path.isabs(lpfx) or b'/../' in prefix: |
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63 raise error.Abort(_(b'archive prefix contains illegal components')) |
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64 return prefix |
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65 |
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66 |
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67 exts = { |
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68 b'tar': [b'.tar'], |
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69 b'tbz2': [b'.tbz2', b'.tar.bz2'], |
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70 b'tgz': [b'.tgz', b'.tar.gz'], |
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71 b'zip': [b'.zip'], |
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72 b'txz': [b'.txz', b'.tar.xz'], |
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73 } |
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74 |
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75 |
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76 def guesskind(dest): |
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77 for kind, extensions in pycompat.iteritems(exts): |
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78 if any(dest.endswith(ext) for ext in extensions): |
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79 return kind |
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80 return None |
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81 |
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82 |
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83 def _rootctx(repo): |
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84 # repo[0] may be hidden |
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85 for rev in repo: |
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86 return repo[rev] |
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87 return repo[nullrev] |
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88 |
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89 |
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90 # {tags} on ctx includes local tags and 'tip', with no current way to limit |
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91 # that to global tags. Therefore, use {latesttag} as a substitute when |
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92 # the distance is 0, since that will be the list of global tags on ctx. |
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93 _defaultmetatemplate = br''' |
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94 repo: {root} |
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95 node: {ifcontains(rev, revset("wdir()"), "{p1node}{dirty}", "{node}")} |
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96 branch: {branch|utf8} |
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97 {ifeq(latesttagdistance, 0, join(latesttag % "tag: {tag}", "\n"), |
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98 separate("\n", |
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99 join(latesttag % "latesttag: {tag}", "\n"), |
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100 "latesttagdistance: {latesttagdistance}", |
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101 "changessincelatesttag: {changessincelatesttag}"))} |
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102 '''[ |
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103 1: |
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104 ] # drop leading '\n' |
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105 |
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106 |
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107 def buildmetadata(ctx): |
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108 '''build content of .hg_archival.txt''' |
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109 repo = ctx.repo() |
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110 |
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111 opts = { |
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112 b'template': repo.ui.config( |
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113 b'experimental', b'archivemetatemplate', _defaultmetatemplate |
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114 ) |
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115 } |
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116 |
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117 out = util.stringio() |
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118 |
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119 fm = formatter.formatter(repo.ui, out, b'archive', opts) |
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120 fm.startitem() |
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121 fm.context(ctx=ctx) |
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122 fm.data(root=_rootctx(repo).hex()) |
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123 |
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124 if ctx.rev() is None: |
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125 dirty = b'' |
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126 if ctx.dirty(missing=True): |
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127 dirty = b'+' |
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128 fm.data(dirty=dirty) |
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129 fm.end() |
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130 |
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131 return out.getvalue() |
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132 |
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133 |
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134 class tarit(object): |
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135 '''write archive to tar file or stream. can write uncompressed, |
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136 or compress with gzip or bzip2.''' |
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137 |
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138 if pycompat.ispy3: |
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139 GzipFileWithTime = gzip.GzipFile # camelcase-required |
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140 else: |
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141 |
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142 class GzipFileWithTime(gzip.GzipFile): |
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143 def __init__(self, *args, **kw): |
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144 timestamp = None |
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145 if 'mtime' in kw: |
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146 timestamp = kw.pop('mtime') |
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147 if timestamp is None: |
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148 self.timestamp = time.time() |
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149 else: |
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150 self.timestamp = timestamp |
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151 gzip.GzipFile.__init__(self, *args, **kw) |
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152 |
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153 def _write_gzip_header(self): |
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154 self.fileobj.write(b'\037\213') # magic header |
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155 self.fileobj.write(b'\010') # compression method |
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156 fname = self.name |
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157 if fname and fname.endswith(b'.gz'): |
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158 fname = fname[:-3] |
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159 flags = 0 |
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160 if fname: |
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161 flags = gzip.FNAME # pytype: disable=module-attr |
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162 self.fileobj.write(pycompat.bytechr(flags)) |
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163 gzip.write32u( # pytype: disable=module-attr |
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164 self.fileobj, int(self.timestamp) |
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165 ) |
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166 self.fileobj.write(b'\002') |
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167 self.fileobj.write(b'\377') |
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168 if fname: |
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169 self.fileobj.write(fname + b'\000') |
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170 |
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171 def __init__(self, dest, mtime, kind=b''): |
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172 self.mtime = mtime |
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173 self.fileobj = None |
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174 |
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175 def taropen(mode, name=b'', fileobj=None): |
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176 if kind == b'gz': |
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177 mode = mode[0:1] |
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178 if not fileobj: |
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179 fileobj = open(name, mode + b'b') |
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180 gzfileobj = self.GzipFileWithTime( |
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181 name, |
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182 pycompat.sysstr(mode + b'b'), |
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183 zlib.Z_BEST_COMPRESSION, |
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184 fileobj, |
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185 mtime=mtime, |
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186 ) |
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187 self.fileobj = gzfileobj |
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188 return tarfile.TarFile.taropen( # pytype: disable=attribute-error |
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189 name, pycompat.sysstr(mode), gzfileobj |
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190 ) |
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191 else: |
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192 return tarfile.open(name, pycompat.sysstr(mode + kind), fileobj) |
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193 |
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194 if isinstance(dest, bytes): |
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195 self.z = taropen(b'w:', name=dest) |
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196 else: |
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197 self.z = taropen(b'w|', fileobj=dest) |
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198 |
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199 def addfile(self, name, mode, islink, data): |
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200 name = pycompat.fsdecode(name) |
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201 i = tarfile.TarInfo(name) |
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202 i.mtime = self.mtime |
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203 i.size = len(data) |
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204 if islink: |
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205 i.type = tarfile.SYMTYPE |
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206 i.mode = 0o777 |
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207 i.linkname = pycompat.fsdecode(data) |
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208 data = None |
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209 i.size = 0 |
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210 else: |
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211 i.mode = mode |
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212 data = stringio(data) |
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213 self.z.addfile(i, data) |
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214 |
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215 def done(self): |
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216 self.z.close() |
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217 if self.fileobj: |
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218 self.fileobj.close() |
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219 |
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220 |
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221 class zipit(object): |
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222 '''write archive to zip file or stream. can write uncompressed, |
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223 or compressed with deflate.''' |
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224 |
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225 def __init__(self, dest, mtime, compress=True): |
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226 if isinstance(dest, bytes): |
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227 dest = pycompat.fsdecode(dest) |
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228 self.z = zipfile.ZipFile( |
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229 dest, 'w', compress and zipfile.ZIP_DEFLATED or zipfile.ZIP_STORED |
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230 ) |
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231 |
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232 # Python's zipfile module emits deprecation warnings if we try |
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233 # to store files with a date before 1980. |
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234 epoch = 315532800 # calendar.timegm((1980, 1, 1, 0, 0, 0, 1, 1, 0)) |
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235 if mtime < epoch: |
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236 mtime = epoch |
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237 |
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238 self.mtime = mtime |
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239 self.date_time = time.gmtime(mtime)[:6] |
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240 |
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241 def addfile(self, name, mode, islink, data): |
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242 i = zipfile.ZipInfo(pycompat.fsdecode(name), self.date_time) |
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243 i.compress_type = self.z.compression # pytype: disable=attribute-error |
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244 # unzip will not honor unix file modes unless file creator is |
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245 # set to unix (id 3). |
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246 i.create_system = 3 |
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247 ftype = _UNX_IFREG |
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248 if islink: |
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249 mode = 0o777 |
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250 ftype = _UNX_IFLNK |
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251 i.external_attr = (mode | ftype) << 16 |
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252 # add "extended-timestamp" extra block, because zip archives |
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253 # without this will be extracted with unexpected timestamp, |
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254 # if TZ is not configured as GMT |
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255 i.extra += struct.pack( |
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256 b'<hhBl', |
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257 0x5455, # block type: "extended-timestamp" |
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258 1 + 4, # size of this block |
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259 1, # "modification time is present" |
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260 int(self.mtime), |
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261 ) # last modification (UTC) |
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262 self.z.writestr(i, data) |
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263 |
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264 def done(self): |
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265 self.z.close() |
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266 |
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267 |
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268 class fileit(object): |
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269 '''write archive as files in directory.''' |
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270 |
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271 def __init__(self, name, mtime): |
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272 self.basedir = name |
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273 self.opener = vfsmod.vfs(self.basedir) |
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274 self.mtime = mtime |
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275 |
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276 def addfile(self, name, mode, islink, data): |
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277 if islink: |
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278 self.opener.symlink(data, name) |
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279 return |
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280 f = self.opener(name, b"w", atomictemp=False) |
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281 f.write(data) |
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282 f.close() |
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283 destfile = os.path.join(self.basedir, name) |
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284 os.chmod(destfile, mode) |
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285 if self.mtime is not None: |
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286 os.utime(destfile, (self.mtime, self.mtime)) |
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287 |
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288 def done(self): |
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289 pass |
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290 |
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291 |
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292 archivers = { |
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293 b'files': fileit, |
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294 b'tar': tarit, |
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295 b'tbz2': lambda name, mtime: tarit(name, mtime, b'bz2'), |
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296 b'tgz': lambda name, mtime: tarit(name, mtime, b'gz'), |
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297 b'txz': lambda name, mtime: tarit(name, mtime, b'xz'), |
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298 b'uzip': lambda name, mtime: zipit(name, mtime, False), |
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299 b'zip': zipit, |
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300 } |
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301 |
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302 |
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303 def archive( |
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304 repo, |
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305 dest, |
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306 node, |
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307 kind, |
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308 decode=True, |
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309 match=None, |
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310 prefix=b'', |
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311 mtime=None, |
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312 subrepos=False, |
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313 ): |
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314 '''create archive of repo as it was at node. |
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315 |
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316 dest can be name of directory, name of archive file, or file |
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317 object to write archive to. |
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318 |
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319 kind is type of archive to create. |
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320 |
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321 decode tells whether to put files through decode filters from |
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322 hgrc. |
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323 |
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324 match is a matcher to filter names of files to write to archive. |
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325 |
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326 prefix is name of path to put before every archive member. |
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327 |
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328 mtime is the modified time, in seconds, or None to use the changeset time. |
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329 |
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330 subrepos tells whether to include subrepos. |
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331 ''' |
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332 |
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333 if kind == b'txz' and not pycompat.ispy3: |
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334 raise error.Abort(_(b'xz compression is only available in Python 3')) |
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335 |
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336 if kind == b'files': |
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337 if prefix: |
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338 raise error.Abort(_(b'cannot give prefix when archiving to files')) |
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339 else: |
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340 prefix = tidyprefix(dest, kind, prefix) |
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341 |
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archive: delay extraction of file revisions
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342 def write(name, mode, islink, getdata): |
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343 data = getdata() |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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344 if decode: |
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replace filehandle version of wwrite with wwritedata
Matt Mackall <mpm@selenic.com>
parents:
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345 data = repo.wwritedata(name, data) |
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346 archiver.addfile(prefix + name, mode, islink, data) |
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347 |
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cleanly abort on unknown archive type (issue966)
Dirkjan Ochtman <dirkjan@ochtman.nl>
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348 if kind not in archivers: |
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349 raise error.Abort(_(b"unknown archive type '%s'") % kind) |
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manifest: remove execf/linkf methods
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350 |
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351 ctx = repo[node] |
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352 archiver = archivers[kind](dest, mtime or ctx.date()[0]) |
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353 |
40408
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archive: create alwaysmatcher when no matcher provided
Martin von Zweigbergk <martinvonz@google.com>
parents:
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354 if not match: |
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355 match = scmutil.matchall(repo) |
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356 |
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357 if repo.ui.configbool(b"ui", b"archivemeta"): |
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358 name = b'.hg_archival.txt' |
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359 if match(name): |
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global: mass rewrite to use modern octal syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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360 write(name, 0o644, False, lambda: buildmetadata(ctx)) |
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archive: add branch and tag informations to the .hg_archival.txt file
Gilles Moris <gilles.moris@free.fr>
parents:
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361 |
40409
5eefd32cb382
archive: use manifest.matches() to simplify and speed up matching
Martin von Zweigbergk <martinvonz@google.com>
parents:
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362 files = [f for f in ctx.manifest().matches(match)] |
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archive: make progress only show files that are actually archived
Thomas Arendsen Hein <thomas@intevation.de>
parents:
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363 total = len(files) |
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364 if total: |
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365 files.sort() |
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366 scmutil.prefetchfiles( |
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367 repo, [ctx.rev()], scmutil.matchfiles(repo, files) |
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368 ) |
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369 progress = repo.ui.makeprogress( |
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370 _(b'archiving'), unit=_(b'files'), total=total |
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371 ) |
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372 progress.update(0) |
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373 for f in files: |
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374 ff = ctx.flags(f) |
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375 write(f, b'x' in ff and 0o755 or 0o644, b'l' in ff, ctx[f].data) |
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376 progress.increment(item=f) |
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377 progress.complete() |
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378 |
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379 if subrepos: |
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subrepos: process subrepos in sorted order
Mads Kiilerich <mads@kiilerich.com>
parents:
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diff
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380 for subpath in sorted(ctx.substate): |
25601
3ec8351fa6ed
archive: support 'wdir()'
Matt Harbison <matt_harbison@yahoo.com>
parents:
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381 sub = ctx.workingsub(subpath) |
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archive: change "matcnfn" argument to a real matcher
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parents:
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382 submatch = matchmod.subdirmatcher(subpath, match) |
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383 subprefix = prefix + subpath + b'/' |
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subrepo: adjust subrepo prefix before calling subrepo.archive() (API)
Martin von Zweigbergk <martinvonz@google.com>
parents:
41208
diff
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384 total += sub.archive(archiver, subprefix, submatch, decode) |
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parents:
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385 |
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parents:
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386 if total == 0: |
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387 raise error.Abort(_(b'no files match the archive pattern')) |
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Martin Geisler <mg@aragost.com>
parents:
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388 |
2112
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add "archive" command, like "cvs export" only better.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff
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389 archiver.done() |
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390 return total |