Mercurial > hg
annotate mercurial/archival.py @ 48946:642e31cb55f0
py3: use class X: instead of class X(object):
The inheritance from object is implied in Python 3. So this should
be equivalent.
This change was generated via an automated search and replace. So there
may have been some accidental changes.
Differential Revision: https://phab.mercurial-scm.org/D12352
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 21 Feb 2022 13:08:28 -0700 |
parents | f254fc73d956 |
children | 55d45d0de4e7 |
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 |
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9 import gzip |
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10 import os |
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11 import struct |
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12 import tarfile |
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13 import time |
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14 import zipfile |
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15 import zlib |
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16 |
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17 from .i18n import _ |
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18 from .node import nullrev |
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19 from .pycompat import open |
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20 |
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21 from . import ( |
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22 error, |
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23 formatter, |
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24 match as matchmod, |
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25 pycompat, |
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26 scmutil, |
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27 util, |
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28 vfs as vfsmod, |
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29 ) |
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30 |
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31 from .utils import stringutil |
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32 |
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33 stringio = util.stringio |
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34 |
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35 # from unzip source code: |
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36 _UNX_IFREG = 0x8000 |
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37 _UNX_IFLNK = 0xA000 |
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38 |
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39 |
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40 def tidyprefix(dest, kind, prefix): |
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41 """choose prefix to use for names in archive. make sure prefix is |
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42 safe for consumers.""" |
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43 |
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44 if prefix: |
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45 prefix = util.normpath(prefix) |
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46 else: |
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47 if not isinstance(dest, bytes): |
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48 raise ValueError(b'dest must be string if no prefix') |
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49 prefix = os.path.basename(dest) |
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50 lower = prefix.lower() |
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51 for sfx in exts.get(kind, []): |
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52 if lower.endswith(sfx): |
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53 prefix = prefix[: -len(sfx)] |
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54 break |
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55 lpfx = os.path.normpath(util.localpath(prefix)) |
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56 prefix = util.pconvert(lpfx) |
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57 if not prefix.endswith(b'/'): |
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58 prefix += b'/' |
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59 # Drop the leading '.' path component if present, so Windows can read the |
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60 # zip files (issue4634) |
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61 if prefix.startswith(b'./'): |
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62 prefix = prefix[2:] |
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63 if prefix.startswith(b'../') or os.path.isabs(lpfx) or b'/../' in prefix: |
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64 raise error.Abort(_(b'archive prefix contains illegal components')) |
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65 return prefix |
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66 |
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67 |
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68 exts = { |
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69 b'tar': [b'.tar'], |
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70 b'tbz2': [b'.tbz2', b'.tar.bz2'], |
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71 b'tgz': [b'.tgz', b'.tar.gz'], |
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72 b'zip': [b'.zip'], |
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73 b'txz': [b'.txz', b'.tar.xz'], |
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74 } |
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75 |
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76 |
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77 def guesskind(dest): |
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78 for kind, extensions in exts.items(): |
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79 if any(dest.endswith(ext) for ext in extensions): |
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80 return kind |
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81 return None |
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82 |
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83 |
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84 def _rootctx(repo): |
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85 # repo[0] may be hidden |
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86 for rev in repo: |
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87 return repo[rev] |
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88 return repo[nullrev] |
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89 |
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90 |
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91 # {tags} on ctx includes local tags and 'tip', with no current way to limit |
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92 # that to global tags. Therefore, use {latesttag} as a substitute when |
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93 # the distance is 0, since that will be the list of global tags on ctx. |
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94 _defaultmetatemplate = br''' |
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95 repo: {root} |
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96 node: {ifcontains(rev, revset("wdir()"), "{p1node}{dirty}", "{node}")} |
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97 branch: {branch|utf8} |
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98 {ifeq(latesttagdistance, 0, join(latesttag % "tag: {tag}", "\n"), |
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99 separate("\n", |
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100 join(latesttag % "latesttag: {tag}", "\n"), |
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101 "latesttagdistance: {latesttagdistance}", |
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102 "changessincelatesttag: {changessincelatesttag}"))} |
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103 '''[ |
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104 1: |
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105 ] # drop leading '\n' |
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106 |
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107 |
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108 def buildmetadata(ctx): |
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109 '''build content of .hg_archival.txt''' |
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110 repo = ctx.repo() |
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111 |
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112 opts = { |
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113 b'template': repo.ui.config( |
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114 b'experimental', b'archivemetatemplate', _defaultmetatemplate |
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115 ) |
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116 } |
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117 |
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118 out = util.stringio() |
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119 |
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120 fm = formatter.formatter(repo.ui, out, b'archive', opts) |
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121 fm.startitem() |
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122 fm.context(ctx=ctx) |
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123 fm.data(root=_rootctx(repo).hex()) |
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124 |
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125 if ctx.rev() is None: |
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126 dirty = b'' |
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127 if ctx.dirty(missing=True): |
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128 dirty = b'+' |
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129 fm.data(dirty=dirty) |
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130 fm.end() |
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131 |
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132 return out.getvalue() |
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133 |
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134 |
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135 class tarit: |
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136 """write archive to tar file or stream. can write uncompressed, |
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137 or compress with gzip or bzip2.""" |
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138 |
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139 def __init__(self, dest, mtime, kind=b''): |
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140 self.mtime = mtime |
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141 self.fileobj = None |
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142 |
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143 def taropen(mode, name=b'', fileobj=None): |
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144 if kind == b'gz': |
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145 mode = mode[0:1] |
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146 if not fileobj: |
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147 fileobj = open(name, mode + b'b') |
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148 gzfileobj = gzip.GzipFile( |
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149 name, |
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150 pycompat.sysstr(mode + b'b'), |
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151 zlib.Z_BEST_COMPRESSION, |
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152 fileobj, |
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153 mtime=mtime, |
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154 ) |
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155 self.fileobj = gzfileobj |
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156 return ( |
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157 tarfile.TarFile.taropen( # pytype: disable=attribute-error |
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158 name, pycompat.sysstr(mode), gzfileobj |
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159 ) |
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160 ) |
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161 else: |
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162 try: |
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163 return tarfile.open( |
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164 name, pycompat.sysstr(mode + kind), fileobj |
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165 ) |
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166 except tarfile.CompressionError as e: |
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167 raise error.Abort(stringutil.forcebytestr(e)) |
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168 |
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169 if isinstance(dest, bytes): |
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170 self.z = taropen(b'w:', name=dest) |
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171 else: |
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172 self.z = taropen(b'w|', fileobj=dest) |
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173 |
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174 def addfile(self, name, mode, islink, data): |
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175 name = pycompat.fsdecode(name) |
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176 i = tarfile.TarInfo(name) |
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177 i.mtime = self.mtime |
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178 i.size = len(data) |
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179 if islink: |
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180 i.type = tarfile.SYMTYPE |
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181 i.mode = 0o777 |
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182 i.linkname = pycompat.fsdecode(data) |
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183 data = None |
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184 i.size = 0 |
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185 else: |
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186 i.mode = mode |
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187 data = stringio(data) |
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188 self.z.addfile(i, data) |
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189 |
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190 def done(self): |
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191 self.z.close() |
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192 if self.fileobj: |
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193 self.fileobj.close() |
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194 |
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195 |
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196 class zipit: |
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197 """write archive to zip file or stream. can write uncompressed, |
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198 or compressed with deflate.""" |
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199 |
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200 def __init__(self, dest, mtime, compress=True): |
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201 if isinstance(dest, bytes): |
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202 dest = pycompat.fsdecode(dest) |
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203 self.z = zipfile.ZipFile( |
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204 dest, 'w', compress and zipfile.ZIP_DEFLATED or zipfile.ZIP_STORED |
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205 ) |
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206 |
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207 # Python's zipfile module emits deprecation warnings if we try |
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208 # to store files with a date before 1980. |
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209 epoch = 315532800 # calendar.timegm((1980, 1, 1, 0, 0, 0, 1, 1, 0)) |
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210 if mtime < epoch: |
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211 mtime = epoch |
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212 |
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213 self.mtime = mtime |
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214 self.date_time = time.gmtime(mtime)[:6] |
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215 |
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216 def addfile(self, name, mode, islink, data): |
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217 i = zipfile.ZipInfo(pycompat.fsdecode(name), self.date_time) |
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218 i.compress_type = self.z.compression # pytype: disable=attribute-error |
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219 # unzip will not honor unix file modes unless file creator is |
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220 # set to unix (id 3). |
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221 i.create_system = 3 |
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222 ftype = _UNX_IFREG |
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223 if islink: |
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224 mode = 0o777 |
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225 ftype = _UNX_IFLNK |
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226 i.external_attr = (mode | ftype) << 16 |
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227 # add "extended-timestamp" extra block, because zip archives |
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228 # without this will be extracted with unexpected timestamp, |
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229 # if TZ is not configured as GMT |
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230 i.extra += struct.pack( |
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231 b'<hhBl', |
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232 0x5455, # block type: "extended-timestamp" |
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233 1 + 4, # size of this block |
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234 1, # "modification time is present" |
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235 int(self.mtime), |
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236 ) # last modification (UTC) |
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237 self.z.writestr(i, data) |
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238 |
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239 def done(self): |
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240 self.z.close() |
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241 |
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242 |
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243 class fileit: |
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244 '''write archive as files in directory.''' |
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245 |
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246 def __init__(self, name, mtime): |
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247 self.basedir = name |
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248 self.opener = vfsmod.vfs(self.basedir) |
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249 self.mtime = mtime |
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250 |
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251 def addfile(self, name, mode, islink, data): |
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252 if islink: |
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253 self.opener.symlink(data, name) |
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254 return |
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255 f = self.opener(name, b"w", atomictemp=False) |
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256 f.write(data) |
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257 f.close() |
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258 destfile = os.path.join(self.basedir, name) |
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259 os.chmod(destfile, mode) |
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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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262 |
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263 def done(self): |
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264 pass |
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265 |
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266 |
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267 archivers = { |
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268 b'files': fileit, |
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269 b'tar': tarit, |
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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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273 b'uzip': lambda name, mtime: zipit(name, mtime, False), |
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274 b'zip': zipit, |
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275 } |
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276 |
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277 |
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278 def archive( |
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279 repo, |
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280 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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288 ): |
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289 """create archive of repo as it was at node. |
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290 |
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291 dest can be name of directory, name of archive file, or file |
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292 object to write archive to. |
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293 |
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294 kind is type of archive to create. |
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295 |
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296 decode tells whether to put files through decode filters from |
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297 hgrc. |
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298 |
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299 match is a matcher to filter names of files to write to archive. |
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300 |
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301 prefix is name of path to put before every archive member. |
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302 |
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303 mtime is the modified time, in seconds, or None to use the changeset time. |
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304 |
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305 subrepos tells whether to include subrepos. |
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306 """ |
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307 |
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308 if kind == b'files': |
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309 if prefix: |
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310 raise error.Abort(_(b'cannot give prefix when archiving to files')) |
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311 else: |
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312 prefix = tidyprefix(dest, kind, prefix) |
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313 |
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314 def write(name, mode, islink, getdata): |
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315 data = getdata() |
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316 if decode: |
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317 data = repo.wwritedata(name, data) |
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318 archiver.addfile(prefix + name, mode, islink, data) |
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319 |
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320 if kind not in archivers: |
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321 raise error.Abort(_(b"unknown archive type '%s'") % kind) |
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322 |
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323 ctx = repo[node] |
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324 archiver = archivers[kind](dest, mtime or ctx.date()[0]) |
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325 |
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326 if not match: |
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327 match = scmutil.matchall(repo) |
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328 |
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329 if repo.ui.configbool(b"ui", b"archivemeta"): |
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330 name = b'.hg_archival.txt' |
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331 if match(name): |
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332 write(name, 0o644, False, lambda: buildmetadata(ctx)) |
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333 |
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334 files = list(ctx.manifest().walk(match)) |
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335 total = len(files) |
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336 if total: |
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337 files.sort() |
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338 scmutil.prefetchfiles( |
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339 repo, [(ctx.rev(), scmutil.matchfiles(repo, files))] |
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340 ) |
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341 progress = repo.ui.makeprogress( |
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342 _(b'archiving'), unit=_(b'files'), total=total |
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343 ) |
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344 progress.update(0) |
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345 for f in files: |
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346 ff = ctx.flags(f) |
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347 write(f, b'x' in ff and 0o755 or 0o644, b'l' in ff, ctx[f].data) |
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348 progress.increment(item=f) |
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349 progress.complete() |
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350 |
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351 if subrepos: |
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352 for subpath in sorted(ctx.substate): |
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353 sub = ctx.workingsub(subpath) |
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354 submatch = matchmod.subdirmatcher(subpath, match) |
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355 subprefix = prefix + subpath + b'/' |
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356 total += sub.archive(archiver, subprefix, submatch, decode) |
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357 |
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358 if total == 0: |
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359 raise error.Abort(_(b'no files match the archive pattern')) |
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360 |
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361 archiver.done() |
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362 return total |