Mercurial > hg
annotate mercurial/archival.py @ 15657:d976b1ef6760
util: don't mess with builtins to emulate buffer()
author | Matt Mackall <mpm@selenic.com> |
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date | Thu, 15 Dec 2011 15:27:11 -0600 |
parents | 774da7121fc9 |
children | 51932c835b74 |
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 |
3891 | 8 from i18n import _ |
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9 from node import hex |
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10 import cmdutil |
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11 import scmutil, util, encoding |
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12 import cStringIO, os, tarfile, time, zipfile |
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13 import zlib, gzip |
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14 |
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15 def tidyprefix(dest, kind, prefix): |
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16 '''choose prefix to use for names in archive. make sure prefix is |
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17 safe for consumers.''' |
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18 |
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19 if prefix: |
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20 prefix = util.normpath(prefix) |
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21 else: |
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22 if not isinstance(dest, str): |
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23 raise ValueError('dest must be string if no prefix') |
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24 prefix = os.path.basename(dest) |
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25 lower = prefix.lower() |
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26 for sfx in exts.get(kind, []): |
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27 if lower.endswith(sfx): |
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28 prefix = prefix[:-len(sfx)] |
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29 break |
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30 lpfx = os.path.normpath(util.localpath(prefix)) |
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31 prefix = util.pconvert(lpfx) |
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32 if not prefix.endswith('/'): |
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33 prefix += '/' |
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34 if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix: |
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35 raise util.Abort(_('archive prefix contains illegal components')) |
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36 return prefix |
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37 |
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38 exts = { |
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39 'tar': ['.tar'], |
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40 'tbz2': ['.tbz2', '.tar.bz2'], |
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41 'tgz': ['.tgz', '.tar.gz'], |
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42 'zip': ['.zip'], |
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43 } |
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44 |
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45 def guesskind(dest): |
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46 for kind, extensions in exts.iteritems(): |
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47 if util.any(dest.endswith(ext) for ext in extensions): |
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48 return kind |
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49 return None |
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50 |
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51 |
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52 class tarit(object): |
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53 '''write archive to tar file or stream. can write uncompressed, |
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54 or compress with gzip or bzip2.''' |
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55 |
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56 class GzipFileWithTime(gzip.GzipFile): |
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57 |
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58 def __init__(self, *args, **kw): |
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59 timestamp = None |
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60 if 'timestamp' in kw: |
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61 timestamp = kw.pop('timestamp') |
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62 if timestamp is None: |
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63 self.timestamp = time.time() |
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64 else: |
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65 self.timestamp = timestamp |
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66 gzip.GzipFile.__init__(self, *args, **kw) |
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67 |
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68 def _write_gzip_header(self): |
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69 self.fileobj.write('\037\213') # magic header |
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70 self.fileobj.write('\010') # compression method |
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71 # Python 2.6 deprecates self.filename |
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72 fname = getattr(self, 'name', None) or self.filename |
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73 if fname and fname.endswith('.gz'): |
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74 fname = fname[:-3] |
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75 flags = 0 |
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76 if fname: |
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77 flags = gzip.FNAME |
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78 self.fileobj.write(chr(flags)) |
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79 gzip.write32u(self.fileobj, long(self.timestamp)) |
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80 self.fileobj.write('\002') |
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81 self.fileobj.write('\377') |
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82 if fname: |
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83 self.fileobj.write(fname + '\000') |
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84 |
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85 def __init__(self, dest, mtime, kind=''): |
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86 self.mtime = mtime |
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87 self.fileobj = None |
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88 |
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89 def taropen(name, mode, fileobj=None): |
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90 if kind == 'gz': |
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91 mode = mode[0] |
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92 if not fileobj: |
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94 gzfileobj = self.GzipFileWithTime(name, mode + 'b', |
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95 zlib.Z_BEST_COMPRESSION, |
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96 fileobj, timestamp=mtime) |
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97 self.fileobj = gzfileobj |
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98 return tarfile.TarFile.taropen(name, mode, gzfileobj) |
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99 else: |
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100 self.fileobj = fileobj |
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101 return tarfile.open(name, mode + kind, fileobj) |
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102 |
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103 if isinstance(dest, str): |
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104 self.z = taropen(dest, mode='w:') |
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105 else: |
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106 # Python 2.5-2.5.1 have a regression that requires a name arg |
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107 self.z = taropen(name='', mode='w|', fileobj=dest) |
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108 |
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109 def addfile(self, name, mode, islink, data): |
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110 i = tarfile.TarInfo(name) |
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111 i.mtime = self.mtime |
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112 i.size = len(data) |
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113 if islink: |
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114 i.type = tarfile.SYMTYPE |
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115 i.mode = 0777 |
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116 i.linkname = data |
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117 data = None |
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118 i.size = 0 |
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119 else: |
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120 i.mode = mode |
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121 data = cStringIO.StringIO(data) |
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122 self.z.addfile(i, data) |
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123 |
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124 def done(self): |
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125 self.z.close() |
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126 if self.fileobj: |
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127 self.fileobj.close() |
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128 |
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129 class tellable(object): |
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130 '''provide tell method for zipfile.ZipFile when writing to http |
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131 response file object.''' |
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132 |
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133 def __init__(self, fp): |
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134 self.fp = fp |
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135 self.offset = 0 |
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136 |
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137 def __getattr__(self, key): |
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138 return getattr(self.fp, key) |
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139 |
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140 def write(self, s): |
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141 self.fp.write(s) |
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142 self.offset += len(s) |
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143 |
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144 def tell(self): |
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145 return self.offset |
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146 |
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147 class zipit(object): |
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148 '''write archive to zip file or stream. can write uncompressed, |
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149 or compressed with deflate.''' |
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150 |
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151 def __init__(self, dest, mtime, compress=True): |
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152 if not isinstance(dest, str): |
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153 try: |
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154 dest.tell() |
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155 except (AttributeError, IOError): |
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156 dest = tellable(dest) |
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157 self.z = zipfile.ZipFile(dest, 'w', |
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158 compress and zipfile.ZIP_DEFLATED or |
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159 zipfile.ZIP_STORED) |
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160 |
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161 # Python's zipfile module emits deprecation warnings if we try |
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162 # to store files with a date before 1980. |
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163 epoch = 315532800 # calendar.timegm((1980, 1, 1, 0, 0, 0, 1, 1, 0)) |
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164 if mtime < epoch: |
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165 mtime = epoch |
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166 |
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167 self.date_time = time.gmtime(mtime)[:6] |
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168 |
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169 def addfile(self, name, mode, islink, data): |
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170 i = zipfile.ZipInfo(name, self.date_time) |
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171 i.compress_type = self.z.compression |
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172 # unzip will not honor unix file modes unless file creator is |
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173 # set to unix (id 3). |
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174 i.create_system = 3 |
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175 ftype = 0x8000 # UNX_IFREG in unzip source code |
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176 if islink: |
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177 mode = 0777 |
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178 ftype = 0xa000 # UNX_IFLNK in unzip source code |
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179 i.external_attr = (mode | ftype) << 16L |
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180 self.z.writestr(i, data) |
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181 |
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182 def done(self): |
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183 self.z.close() |
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184 |
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185 class fileit(object): |
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186 '''write archive as files in directory.''' |
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187 |
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188 def __init__(self, name, mtime): |
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189 self.basedir = name |
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190 self.opener = scmutil.opener(self.basedir) |
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191 |
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192 def addfile(self, name, mode, islink, data): |
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193 if islink: |
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194 self.opener.symlink(data, name) |
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195 return |
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196 f = self.opener(name, "w", atomictemp=True) |
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197 f.write(data) |
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198 f.close() |
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199 destfile = os.path.join(self.basedir, name) |
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200 os.chmod(destfile, mode) |
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201 |
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202 def done(self): |
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203 pass |
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204 |
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205 archivers = { |
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206 'files': fileit, |
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207 'tar': tarit, |
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208 'tbz2': lambda name, mtime: tarit(name, mtime, 'bz2'), |
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209 'tgz': lambda name, mtime: tarit(name, mtime, 'gz'), |
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210 'uzip': lambda name, mtime: zipit(name, mtime, False), |
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211 'zip': zipit, |
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212 } |
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213 |
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214 def archive(repo, dest, node, kind, decode=True, matchfn=None, |
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215 prefix=None, mtime=None, subrepos=False): |
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216 '''create archive of repo as it was at node. |
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217 |
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218 dest can be name of directory, name of archive file, or file |
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219 object to write archive to. |
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220 |
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221 kind is type of archive to create. |
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222 |
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223 decode tells whether to put files through decode filters from |
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224 hgrc. |
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225 |
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226 matchfn is function to filter names of files to write to archive. |
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227 |
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228 prefix is name of path to put before every archive member.''' |
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229 |
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230 if kind == 'files': |
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231 if prefix: |
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232 raise util.Abort(_('cannot give prefix when archiving to files')) |
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233 else: |
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234 prefix = tidyprefix(dest, kind, prefix) |
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235 |
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236 def write(name, mode, islink, getdata): |
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237 if matchfn and not matchfn(name): |
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238 return |
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239 data = getdata() |
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240 if decode: |
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241 data = repo.wwritedata(name, data) |
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242 archiver.addfile(prefix + name, mode, islink, data) |
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243 |
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244 if kind not in archivers: |
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245 raise util.Abort(_("unknown archive type '%s'") % kind) |
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246 |
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247 ctx = repo[node] |
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248 archiver = archivers[kind](dest, mtime or ctx.date()[0]) |
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249 |
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250 if repo.ui.configbool("ui", "archivemeta", True): |
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251 def metadata(): |
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252 base = 'repo: %s\nnode: %s\nbranch: %s\n' % ( |
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253 repo[0].hex(), hex(node), encoding.fromlocal(ctx.branch())) |
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254 |
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255 tags = ''.join('tag: %s\n' % t for t in ctx.tags() |
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256 if repo.tagtype(t) == 'global') |
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257 if not tags: |
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258 repo.ui.pushbuffer() |
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259 opts = {'template': '{latesttag}\n{latesttagdistance}', |
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260 'style': '', 'patch': None, 'git': None} |
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261 cmdutil.show_changeset(repo.ui, repo, opts).show(ctx) |
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262 ltags, dist = repo.ui.popbuffer().split('\n') |
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263 tags = ''.join('latesttag: %s\n' % t for t in ltags.split(':')) |
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264 tags += 'latesttagdistance: %s\n' % dist |
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265 |
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266 return base + tags |
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267 |
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268 write('.hg_archival.txt', 0644, False, metadata) |
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269 |
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270 total = len(ctx.manifest()) |
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271 repo.ui.progress(_('archiving'), 0, unit=_('files'), total=total) |
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272 for i, f in enumerate(ctx): |
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273 ff = ctx.flags(f) |
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274 write(f, 'x' in ff and 0755 or 0644, 'l' in ff, ctx[f].data) |
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275 repo.ui.progress(_('archiving'), i + 1, item=f, |
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276 unit=_('files'), total=total) |
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277 repo.ui.progress(_('archiving'), None) |
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278 |
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279 if subrepos: |
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280 for subpath in ctx.substate: |
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281 sub = ctx.sub(subpath) |
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282 sub.archive(repo.ui, archiver, prefix) |
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283 |
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284 archiver.done() |