Mercurial > hg
annotate mercurial/archival.py @ 17517:15036492a103
spelling: Structured
author | timeless@mozdev.org |
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date | Fri, 17 Aug 2012 13:58:19 -0700 |
parents | 1894dac619de |
children | 72fa4ef2245f 133d13e44544 |
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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 |
3891 | 8 from i18n import _ |
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9 from node import hex |
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10 import match as matchmod |
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11 import cmdutil |
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12 import scmutil, util, encoding |
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13 import cStringIO, os, tarfile, time, zipfile |
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14 import zlib, gzip |
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15 |
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16 def tidyprefix(dest, kind, prefix): |
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17 '''choose prefix to use for names in archive. make sure prefix is |
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18 safe for consumers.''' |
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19 |
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20 if prefix: |
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21 prefix = util.normpath(prefix) |
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22 else: |
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23 if not isinstance(dest, str): |
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24 raise ValueError('dest must be string if no prefix') |
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25 prefix = os.path.basename(dest) |
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26 lower = prefix.lower() |
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27 for sfx in exts.get(kind, []): |
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28 if lower.endswith(sfx): |
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29 prefix = prefix[:-len(sfx)] |
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30 break |
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31 lpfx = os.path.normpath(util.localpath(prefix)) |
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32 prefix = util.pconvert(lpfx) |
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33 if not prefix.endswith('/'): |
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34 prefix += '/' |
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35 if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix: |
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36 raise util.Abort(_('archive prefix contains illegal components')) |
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37 return prefix |
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38 |
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39 exts = { |
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40 'tar': ['.tar'], |
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41 'tbz2': ['.tbz2', '.tar.bz2'], |
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42 'tgz': ['.tgz', '.tar.gz'], |
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43 'zip': ['.zip'], |
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44 } |
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45 |
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46 def guesskind(dest): |
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47 for kind, extensions in exts.iteritems(): |
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48 if util.any(dest.endswith(ext) for ext in extensions): |
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49 return kind |
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50 return None |
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51 |
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52 |
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53 class tarit(object): |
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54 '''write archive to tar file or stream. can write uncompressed, |
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55 or compress with gzip or bzip2.''' |
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56 |
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57 class GzipFileWithTime(gzip.GzipFile): |
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58 |
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59 def __init__(self, *args, **kw): |
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60 timestamp = None |
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61 if 'timestamp' in kw: |
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62 timestamp = kw.pop('timestamp') |
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63 if timestamp is None: |
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64 self.timestamp = time.time() |
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65 else: |
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66 self.timestamp = timestamp |
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67 gzip.GzipFile.__init__(self, *args, **kw) |
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68 |
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69 def _write_gzip_header(self): |
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70 self.fileobj.write('\037\213') # magic header |
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71 self.fileobj.write('\010') # compression method |
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72 # Python 2.6 deprecates self.filename |
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73 fname = getattr(self, 'name', None) or self.filename |
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74 if fname and fname.endswith('.gz'): |
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75 fname = fname[:-3] |
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76 flags = 0 |
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77 if fname: |
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78 flags = gzip.FNAME |
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79 self.fileobj.write(chr(flags)) |
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80 gzip.write32u(self.fileobj, long(self.timestamp)) |
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81 self.fileobj.write('\002') |
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82 self.fileobj.write('\377') |
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83 if fname: |
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84 self.fileobj.write(fname + '\000') |
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85 |
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86 def __init__(self, dest, mtime, kind=''): |
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87 self.mtime = mtime |
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88 self.fileobj = None |
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89 |
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90 def taropen(name, mode, fileobj=None): |
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91 if kind == 'gz': |
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92 mode = mode[0] |
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93 if not fileobj: |
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95 gzfileobj = self.GzipFileWithTime(name, mode + 'b', |
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96 zlib.Z_BEST_COMPRESSION, |
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97 fileobj, timestamp=mtime) |
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98 self.fileobj = gzfileobj |
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99 return tarfile.TarFile.taropen(name, mode, gzfileobj) |
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100 else: |
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101 self.fileobj = fileobj |
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102 return tarfile.open(name, mode + kind, fileobj) |
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103 |
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104 if isinstance(dest, str): |
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105 self.z = taropen(dest, mode='w:') |
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106 else: |
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107 # Python 2.5-2.5.1 have a regression that requires a name arg |
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108 self.z = taropen(name='', mode='w|', fileobj=dest) |
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109 |
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110 def addfile(self, name, mode, islink, data): |
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111 i = tarfile.TarInfo(name) |
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112 i.mtime = self.mtime |
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113 i.size = len(data) |
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114 if islink: |
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115 i.type = tarfile.SYMTYPE |
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116 i.mode = 0777 |
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117 i.linkname = data |
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118 data = None |
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119 i.size = 0 |
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120 else: |
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121 i.mode = mode |
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122 data = cStringIO.StringIO(data) |
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123 self.z.addfile(i, data) |
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124 |
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125 def done(self): |
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126 self.z.close() |
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127 if self.fileobj: |
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128 self.fileobj.close() |
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129 |
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130 class tellable(object): |
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131 '''provide tell method for zipfile.ZipFile when writing to http |
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132 response file object.''' |
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133 |
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134 def __init__(self, fp): |
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135 self.fp = fp |
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136 self.offset = 0 |
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137 |
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138 def __getattr__(self, key): |
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139 return getattr(self.fp, key) |
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140 |
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141 def write(self, s): |
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142 self.fp.write(s) |
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143 self.offset += len(s) |
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144 |
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145 def tell(self): |
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146 return self.offset |
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147 |
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148 class zipit(object): |
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149 '''write archive to zip file or stream. can write uncompressed, |
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150 or compressed with deflate.''' |
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151 |
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152 def __init__(self, dest, mtime, compress=True): |
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153 if not isinstance(dest, str): |
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154 try: |
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155 dest.tell() |
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156 except (AttributeError, IOError): |
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157 dest = tellable(dest) |
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158 self.z = zipfile.ZipFile(dest, 'w', |
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159 compress and zipfile.ZIP_DEFLATED or |
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160 zipfile.ZIP_STORED) |
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161 |
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162 # Python's zipfile module emits deprecation warnings if we try |
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163 # to store files with a date before 1980. |
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164 epoch = 315532800 # calendar.timegm((1980, 1, 1, 0, 0, 0, 1, 1, 0)) |
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165 if mtime < epoch: |
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166 mtime = epoch |
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167 |
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168 self.date_time = time.gmtime(mtime)[:6] |
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169 |
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170 def addfile(self, name, mode, islink, data): |
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171 i = zipfile.ZipInfo(name, self.date_time) |
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172 i.compress_type = self.z.compression |
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173 # unzip will not honor unix file modes unless file creator is |
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174 # set to unix (id 3). |
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175 i.create_system = 3 |
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176 ftype = 0x8000 # UNX_IFREG in unzip source code |
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177 if islink: |
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178 mode = 0777 |
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179 ftype = 0xa000 # UNX_IFLNK in unzip source code |
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180 i.external_attr = (mode | ftype) << 16L |
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181 self.z.writestr(i, data) |
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182 |
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183 def done(self): |
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184 self.z.close() |
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185 |
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186 class fileit(object): |
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187 '''write archive as files in directory.''' |
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188 |
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189 def __init__(self, name, mtime): |
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190 self.basedir = name |
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191 self.opener = scmutil.opener(self.basedir) |
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192 |
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193 def addfile(self, name, mode, islink, data): |
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194 if islink: |
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195 self.opener.symlink(data, name) |
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196 return |
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197 f = self.opener(name, "w", atomictemp=True) |
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198 f.write(data) |
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199 f.close() |
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200 destfile = os.path.join(self.basedir, name) |
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201 os.chmod(destfile, mode) |
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202 |
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203 def done(self): |
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204 pass |
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205 |
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206 archivers = { |
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207 'files': fileit, |
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208 'tar': tarit, |
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209 'tbz2': lambda name, mtime: tarit(name, mtime, 'bz2'), |
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210 'tgz': lambda name, mtime: tarit(name, mtime, 'gz'), |
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211 'uzip': lambda name, mtime: zipit(name, mtime, False), |
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212 'zip': zipit, |
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213 } |
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214 |
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215 def archive(repo, dest, node, kind, decode=True, matchfn=None, |
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216 prefix=None, mtime=None, subrepos=False): |
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217 '''create archive of repo as it was at node. |
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218 |
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219 dest can be name of directory, name of archive file, or file |
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220 object to write archive to. |
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221 |
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222 kind is type of archive to create. |
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223 |
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224 decode tells whether to put files through decode filters from |
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225 hgrc. |
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226 |
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227 matchfn is function to filter names of files to write to archive. |
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228 |
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229 prefix is name of path to put before every archive member.''' |
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230 |
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231 if kind == 'files': |
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232 if prefix: |
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233 raise util.Abort(_('cannot give prefix when archiving to files')) |
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234 else: |
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235 prefix = tidyprefix(dest, kind, prefix) |
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236 |
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237 def write(name, mode, islink, getdata): |
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238 data = getdata() |
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239 if decode: |
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240 data = repo.wwritedata(name, data) |
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241 archiver.addfile(prefix + name, mode, islink, data) |
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242 |
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243 if kind not in archivers: |
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244 raise util.Abort(_("unknown archive type '%s'") % kind) |
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245 |
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246 ctx = repo[node] |
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247 archiver = archivers[kind](dest, mtime or ctx.date()[0]) |
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248 |
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249 if repo.ui.configbool("ui", "archivemeta", True): |
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250 def metadata(): |
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251 base = 'repo: %s\nnode: %s\nbranch: %s\n' % ( |
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252 repo[0].hex(), hex(node), encoding.fromlocal(ctx.branch())) |
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253 |
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254 tags = ''.join('tag: %s\n' % t for t in ctx.tags() |
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255 if repo.tagtype(t) == 'global') |
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256 if not tags: |
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257 repo.ui.pushbuffer() |
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258 opts = {'template': '{latesttag}\n{latesttagdistance}', |
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259 'style': '', 'patch': None, 'git': None} |
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260 cmdutil.show_changeset(repo.ui, repo, opts).show(ctx) |
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261 ltags, dist = repo.ui.popbuffer().split('\n') |
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262 tags = ''.join('latesttag: %s\n' % t for t in ltags.split(':')) |
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263 tags += 'latesttagdistance: %s\n' % dist |
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264 |
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265 return base + tags |
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266 |
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267 name = '.hg_archival.txt' |
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268 if not matchfn or matchfn(name): |
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269 write(name, 0644, False, metadata) |
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270 |
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271 if matchfn: |
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272 files = [f for f in ctx.manifest().keys() if matchfn(f)] |
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273 else: |
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274 files = ctx.manifest().keys() |
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275 files.sort() |
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276 total = len(files) |
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277 repo.ui.progress(_('archiving'), 0, unit=_('files'), total=total) |
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278 for i, f in enumerate(files): |
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279 ff = ctx.flags(f) |
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280 write(f, 'x' in ff and 0755 or 0644, 'l' in ff, ctx[f].data) |
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281 repo.ui.progress(_('archiving'), i + 1, item=f, |
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282 unit=_('files'), total=total) |
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283 repo.ui.progress(_('archiving'), None) |
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284 |
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285 if subrepos: |
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286 for subpath in ctx.substate: |
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287 sub = ctx.sub(subpath) |
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288 submatch = matchmod.narrowmatcher(subpath, matchfn) |
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289 sub.archive(repo.ui, archiver, prefix, submatch) |
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290 |
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291 archiver.done() |