Mercurial > hg
annotate mercurial/archival.py @ 7983:7b813bdbd5d0
Change double spaces to single spaces in help texts.
author | Martin Geisler <mg@daimi.au.dk> |
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date | Sat, 04 Apr 2009 21:09:43 +0200 |
parents | fd3e5ff53a31 |
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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 |
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6 # the GNU General Public License, incorporated herein by reference. |
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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 cStringIO, os, stat, tarfile, time, util, zipfile |
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11 import zlib, gzip |
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12 |
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13 def tidyprefix(dest, prefix, suffixes): |
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14 '''choose prefix to use for names in archive. make sure prefix is |
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15 safe for consumers.''' |
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16 |
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17 if prefix: |
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18 prefix = util.normpath(prefix) |
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19 else: |
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20 if not isinstance(dest, str): |
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21 raise ValueError('dest must be string if no prefix') |
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22 prefix = os.path.basename(dest) |
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23 lower = prefix.lower() |
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24 for sfx in suffixes: |
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25 if lower.endswith(sfx): |
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26 prefix = prefix[:-len(sfx)] |
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27 break |
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28 lpfx = os.path.normpath(util.localpath(prefix)) |
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29 prefix = util.pconvert(lpfx) |
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30 if not prefix.endswith('/'): |
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31 prefix += '/' |
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32 if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix: |
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33 raise util.Abort(_('archive prefix contains illegal components')) |
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34 return prefix |
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35 |
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36 class tarit: |
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37 '''write archive to tar file or stream. can write uncompressed, |
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38 or compress with gzip or bzip2.''' |
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39 |
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40 class GzipFileWithTime(gzip.GzipFile): |
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41 |
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42 def __init__(self, *args, **kw): |
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43 timestamp = None |
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44 if 'timestamp' in kw: |
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45 timestamp = kw.pop('timestamp') |
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46 if timestamp == None: |
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47 self.timestamp = time.time() |
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48 else: |
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49 self.timestamp = timestamp |
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50 gzip.GzipFile.__init__(self, *args, **kw) |
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51 |
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52 def _write_gzip_header(self): |
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53 self.fileobj.write('\037\213') # magic header |
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54 self.fileobj.write('\010') # compression method |
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55 # Python 2.6 deprecates self.filename |
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56 fname = getattr(self, 'name', None) or self.filename |
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57 flags = 0 |
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58 if fname: |
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59 flags = gzip.FNAME |
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60 self.fileobj.write(chr(flags)) |
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61 gzip.write32u(self.fileobj, long(self.timestamp)) |
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62 self.fileobj.write('\002') |
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63 self.fileobj.write('\377') |
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64 if fname: |
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65 self.fileobj.write(fname + '\000') |
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66 |
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67 def __init__(self, dest, prefix, mtime, kind=''): |
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68 self.prefix = tidyprefix(dest, prefix, ['.tar', '.tar.bz2', '.tar.gz', |
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69 '.tgz', '.tbz2']) |
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70 self.mtime = mtime |
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71 |
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72 def taropen(name, mode, fileobj=None): |
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73 if kind == 'gz': |
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74 mode = mode[0] |
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75 if not fileobj: |
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77 gzfileobj = self.GzipFileWithTime(name, mode + 'b', |
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78 zlib.Z_BEST_COMPRESSION, |
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79 fileobj, timestamp=mtime) |
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80 return tarfile.TarFile.taropen(name, mode, gzfileobj) |
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81 else: |
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82 return tarfile.open(name, mode + kind, fileobj) |
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83 |
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84 if isinstance(dest, str): |
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85 self.z = taropen(dest, mode='w:') |
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86 else: |
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87 # Python 2.5-2.5.1 have a regression that requires a name arg |
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88 self.z = taropen(name='', mode='w|', fileobj=dest) |
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89 |
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90 def addfile(self, name, mode, islink, data): |
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91 i = tarfile.TarInfo(self.prefix + name) |
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92 i.mtime = self.mtime |
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93 i.size = len(data) |
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94 if islink: |
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95 i.type = tarfile.SYMTYPE |
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96 i.mode = 0777 |
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97 i.linkname = data |
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98 data = None |
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99 i.size = 0 |
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100 else: |
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101 i.mode = mode |
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102 data = cStringIO.StringIO(data) |
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103 self.z.addfile(i, data) |
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104 |
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105 def done(self): |
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106 self.z.close() |
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107 |
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108 class tellable: |
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109 '''provide tell method for zipfile.ZipFile when writing to http |
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110 response file object.''' |
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111 |
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112 def __init__(self, fp): |
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113 self.fp = fp |
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114 self.offset = 0 |
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115 |
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116 def __getattr__(self, key): |
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117 return getattr(self.fp, key) |
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118 |
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119 def write(self, s): |
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120 self.fp.write(s) |
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121 self.offset += len(s) |
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122 |
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123 def tell(self): |
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124 return self.offset |
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125 |
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126 class zipit: |
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127 '''write archive to zip file or stream. can write uncompressed, |
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128 or compressed with deflate.''' |
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129 |
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130 def __init__(self, dest, prefix, mtime, compress=True): |
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131 self.prefix = tidyprefix(dest, prefix, ('.zip',)) |
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132 if not isinstance(dest, str): |
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133 try: |
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134 dest.tell() |
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135 except (AttributeError, IOError): |
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136 dest = tellable(dest) |
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137 self.z = zipfile.ZipFile(dest, 'w', |
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138 compress and zipfile.ZIP_DEFLATED or |
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139 zipfile.ZIP_STORED) |
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140 self.date_time = time.gmtime(mtime)[:6] |
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141 |
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142 def addfile(self, name, mode, islink, data): |
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143 i = zipfile.ZipInfo(self.prefix + name, self.date_time) |
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144 i.compress_type = self.z.compression |
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145 # unzip will not honor unix file modes unless file creator is |
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146 # set to unix (id 3). |
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147 i.create_system = 3 |
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148 ftype = stat.S_IFREG |
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149 if islink: |
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150 mode = 0777 |
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151 ftype = stat.S_IFLNK |
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152 i.external_attr = (mode | ftype) << 16L |
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153 self.z.writestr(i, data) |
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154 |
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155 def done(self): |
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156 self.z.close() |
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157 |
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158 class fileit: |
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159 '''write archive as files in directory.''' |
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160 |
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161 def __init__(self, name, prefix, mtime): |
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162 if prefix: |
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163 raise util.Abort(_('cannot give prefix when archiving to files')) |
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164 self.basedir = name |
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165 self.opener = util.opener(self.basedir) |
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166 |
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167 def addfile(self, name, mode, islink, data): |
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168 if islink: |
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169 self.opener.symlink(data, name) |
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170 return |
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171 f = self.opener(name, "w", atomictemp=True) |
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172 f.write(data) |
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173 f.rename() |
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174 destfile = os.path.join(self.basedir, name) |
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175 os.chmod(destfile, mode) |
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176 |
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177 def done(self): |
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178 pass |
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179 |
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180 archivers = { |
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181 'files': fileit, |
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182 'tar': tarit, |
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183 'tbz2': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'bz2'), |
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184 'tgz': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'gz'), |
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185 'uzip': lambda name, prefix, mtime: zipit(name, prefix, mtime, False), |
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186 'zip': zipit, |
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187 } |
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188 |
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189 def archive(repo, dest, node, kind, decode=True, matchfn=None, |
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190 prefix=None, mtime=None): |
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191 '''create archive of repo as it was at node. |
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192 |
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193 dest can be name of directory, name of archive file, or file |
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194 object to write archive to. |
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195 |
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196 kind is type of archive to create. |
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197 |
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198 decode tells whether to put files through decode filters from |
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199 hgrc. |
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200 |
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201 matchfn is function to filter names of files to write to archive. |
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202 |
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203 prefix is name of path to put before every archive member.''' |
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204 |
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205 def write(name, mode, islink, getdata): |
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206 if matchfn and not matchfn(name): return |
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207 data = getdata() |
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208 if decode: |
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209 data = repo.wwritedata(name, data) |
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210 archiver.addfile(name, mode, islink, data) |
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211 |
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212 if kind not in archivers: |
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213 raise util.Abort(_("unknown archive type '%s'") % kind) |
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214 |
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215 ctx = repo[node] |
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216 archiver = archivers[kind](dest, prefix, mtime or ctx.date()[0]) |
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217 |
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218 if repo.ui.configbool("ui", "archivemeta", True): |
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219 write('.hg_archival.txt', 0644, False, |
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220 lambda: 'repo: %s\nnode: %s\n' % ( |
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221 hex(repo.changelog.node(0)), hex(node))) |
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222 for f in ctx: |
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223 ff = ctx.flags(f) |
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224 write(f, 'x' in ff and 0755 or 0644, 'l' in ff, ctx[f].data) |
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225 archiver.done() |