Mercurial > hg
annotate mercurial/store.py @ 26755:bb0b955d050d
streamclone: support for producing and consuming stream clone bundles
Up to this point, stream clones only existed as a dynamically generated
data format produced and consumed during streaming clones. In order to
support this efficient cloning format with the clone bundles feature, we
need a more formal, on disk representation of the streaming clone data.
This patch introduces a new "bundle" type for streaming clones. Unlike
existing bundles, it does not contain changegroup data. It does,
however, share the same concepts like the 4 byte header which identifies
the type of data that follows and the 2 byte abbreviation for
compression types (of which only "UN" is currently supported).
The new bundle format is essentially the existing stream clone version 1
data format with some headers at the beginning.
Content negotiation at stream clone request time checked for repository
format/requirements compatibility before initiating a stream clone. We
can't do active content negotiation when using clone bundles. So, we put
this set of requirements inside the payload so consumers have a built-in
mechanism for checking compatibility before reading and applying lots of
data. Of course, we will also advertise this requirements set in clone
bundles. But that's for another patch.
We currently don't have a mechanism to produce and consume this new
bundle format. This will be implemented in upcoming patches.
It's worth noting that if a legacy client attempts to `hg unbundle` a
stream clone bundle (with the "HGS1" header), it will abort with:
"unknown bundle version S1," which seems appropriate.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 17 Oct 2015 11:14:52 -0700 |
parents | 56b2bcea2529 |
children | a95c975f42e3 |
rev | line source |
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1 # store.py - repository store handling for Mercurial |
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2 # |
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3 # Copyright 2008 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from i18n import _ |
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9 import scmutil, util, parsers, error |
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10 import os, stat, errno |
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11 |
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12 _sha = util.sha1 |
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13 |
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14 # This avoids a collision between a file named foo and a dir named |
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15 # foo.i or foo.d |
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16 def _encodedir(path): |
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17 ''' |
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18 >>> _encodedir('data/foo.i') |
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19 'data/foo.i' |
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20 >>> _encodedir('data/foo.i/bla.i') |
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21 'data/foo.i.hg/bla.i' |
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22 >>> _encodedir('data/foo.i.hg/bla.i') |
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23 'data/foo.i.hg.hg/bla.i' |
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24 >>> _encodedir('data/foo.i\\ndata/foo.i/bla.i\\ndata/foo.i.hg/bla.i\\n') |
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25 'data/foo.i\\ndata/foo.i.hg/bla.i\\ndata/foo.i.hg.hg/bla.i\\n' |
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26 ''' |
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27 return (path |
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28 .replace(".hg/", ".hg.hg/") |
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29 .replace(".i/", ".i.hg/") |
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30 .replace(".d/", ".d.hg/")) |
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31 |
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32 encodedir = getattr(parsers, 'encodedir', _encodedir) |
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33 |
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34 def decodedir(path): |
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35 ''' |
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36 >>> decodedir('data/foo.i') |
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37 'data/foo.i' |
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38 >>> decodedir('data/foo.i.hg/bla.i') |
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39 'data/foo.i/bla.i' |
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40 >>> decodedir('data/foo.i.hg.hg/bla.i') |
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41 'data/foo.i.hg/bla.i' |
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42 ''' |
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43 if ".hg/" not in path: |
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44 return path |
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45 return (path |
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46 .replace(".d.hg/", ".d/") |
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47 .replace(".i.hg/", ".i/") |
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48 .replace(".hg.hg/", ".hg/")) |
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49 |
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50 def _buildencodefun(): |
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51 ''' |
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52 >>> enc, dec = _buildencodefun() |
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53 |
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54 >>> enc('nothing/special.txt') |
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55 'nothing/special.txt' |
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56 >>> dec('nothing/special.txt') |
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57 'nothing/special.txt' |
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58 |
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59 >>> enc('HELLO') |
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60 '_h_e_l_l_o' |
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61 >>> dec('_h_e_l_l_o') |
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62 'HELLO' |
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63 |
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64 >>> enc('hello:world?') |
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65 'hello~3aworld~3f' |
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66 >>> dec('hello~3aworld~3f') |
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67 'hello:world?' |
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68 |
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69 >>> enc('the\x07quick\xADshot') |
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70 'the~07quick~adshot' |
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71 >>> dec('the~07quick~adshot') |
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72 'the\\x07quick\\xadshot' |
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73 ''' |
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74 e = '_' |
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75 winreserved = [ord(x) for x in '\\:*?"<>|'] |
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76 cmap = dict([(chr(x), chr(x)) for x in xrange(127)]) |
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77 for x in (range(32) + range(126, 256) + winreserved): |
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78 cmap[chr(x)] = "~%02x" % x |
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79 for x in range(ord("A"), ord("Z") + 1) + [ord(e)]: |
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80 cmap[chr(x)] = e + chr(x).lower() |
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81 dmap = {} |
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82 for k, v in cmap.iteritems(): |
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83 dmap[v] = k |
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84 def decode(s): |
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85 i = 0 |
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86 while i < len(s): |
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87 for l in xrange(1, 4): |
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88 try: |
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89 yield dmap[s[i:i + l]] |
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90 i += l |
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91 break |
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92 except KeyError: |
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93 pass |
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94 else: |
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95 raise KeyError |
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96 return (lambda s: ''.join([cmap[c] for c in s]), |
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97 lambda s: ''.join(list(decode(s)))) |
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98 |
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99 _encodefname, _decodefname = _buildencodefun() |
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100 |
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101 def encodefilename(s): |
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102 ''' |
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103 >>> encodefilename('foo.i/bar.d/bla.hg/hi:world?/HELLO') |
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104 'foo.i.hg/bar.d.hg/bla.hg.hg/hi~3aworld~3f/_h_e_l_l_o' |
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105 ''' |
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106 return _encodefname(encodedir(s)) |
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107 |
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108 def decodefilename(s): |
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109 ''' |
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110 >>> decodefilename('foo.i.hg/bar.d.hg/bla.hg.hg/hi~3aworld~3f/_h_e_l_l_o') |
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111 'foo.i/bar.d/bla.hg/hi:world?/HELLO' |
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112 ''' |
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113 return decodedir(_decodefname(s)) |
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114 |
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115 def _buildlowerencodefun(): |
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116 ''' |
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117 >>> f = _buildlowerencodefun() |
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118 >>> f('nothing/special.txt') |
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119 'nothing/special.txt' |
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120 >>> f('HELLO') |
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121 'hello' |
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122 >>> f('hello:world?') |
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123 'hello~3aworld~3f' |
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124 >>> f('the\x07quick\xADshot') |
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125 'the~07quick~adshot' |
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126 ''' |
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127 winreserved = [ord(x) for x in '\\:*?"<>|'] |
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128 cmap = dict([(chr(x), chr(x)) for x in xrange(127)]) |
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129 for x in (range(32) + range(126, 256) + winreserved): |
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130 cmap[chr(x)] = "~%02x" % x |
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131 for x in range(ord("A"), ord("Z") + 1): |
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132 cmap[chr(x)] = chr(x).lower() |
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133 return lambda s: "".join([cmap[c] for c in s]) |
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134 |
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135 lowerencode = getattr(parsers, 'lowerencode', None) or _buildlowerencodefun() |
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136 |
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137 # Windows reserved names: con, prn, aux, nul, com1..com9, lpt1..lpt9 |
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138 _winres3 = ('aux', 'con', 'prn', 'nul') # length 3 |
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139 _winres4 = ('com', 'lpt') # length 4 (with trailing 1..9) |
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140 def _auxencode(path, dotencode): |
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141 ''' |
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142 Encodes filenames containing names reserved by Windows or which end in |
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143 period or space. Does not touch other single reserved characters c. |
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144 Specifically, c in '\\:*?"<>|' or ord(c) <= 31 are *not* encoded here. |
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145 Additionally encodes space or period at the beginning, if dotencode is |
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146 True. Parameter path is assumed to be all lowercase. |
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147 A segment only needs encoding if a reserved name appears as a |
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148 basename (e.g. "aux", "aux.foo"). A directory or file named "foo.aux" |
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149 doesn't need encoding. |
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150 |
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151 >>> s = '.foo/aux.txt/txt.aux/con/prn/nul/foo.' |
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152 >>> _auxencode(s.split('/'), True) |
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153 ['~2efoo', 'au~78.txt', 'txt.aux', 'co~6e', 'pr~6e', 'nu~6c', 'foo~2e'] |
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154 >>> s = '.com1com2/lpt9.lpt4.lpt1/conprn/com0/lpt0/foo.' |
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155 >>> _auxencode(s.split('/'), False) |
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156 ['.com1com2', 'lp~749.lpt4.lpt1', 'conprn', 'com0', 'lpt0', 'foo~2e'] |
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157 >>> _auxencode(['foo. '], True) |
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158 ['foo.~20'] |
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159 >>> _auxencode([' .foo'], True) |
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160 ['~20.foo'] |
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161 ''' |
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162 for i, n in enumerate(path): |
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163 if not n: |
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164 continue |
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165 if dotencode and n[0] in '. ': |
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166 n = "~%02x" % ord(n[0]) + n[1:] |
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167 path[i] = n |
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168 else: |
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169 l = n.find('.') |
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170 if l == -1: |
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171 l = len(n) |
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172 if ((l == 3 and n[:3] in _winres3) or |
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173 (l == 4 and n[3] <= '9' and n[3] >= '1' |
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174 and n[:3] in _winres4)): |
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175 # encode third letter ('aux' -> 'au~78') |
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176 ec = "~%02x" % ord(n[2]) |
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177 n = n[0:2] + ec + n[3:] |
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178 path[i] = n |
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179 if n[-1] in '. ': |
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180 # encode last period or space ('foo...' -> 'foo..~2e') |
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181 path[i] = n[:-1] + "~%02x" % ord(n[-1]) |
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182 return path |
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183 |
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184 _maxstorepathlen = 120 |
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185 _dirprefixlen = 8 |
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186 _maxshortdirslen = 8 * (_dirprefixlen + 1) - 4 |
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187 |
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188 def _hashencode(path, dotencode): |
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189 digest = _sha(path).hexdigest() |
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190 le = lowerencode(path[5:]).split('/') # skips prefix 'data/' or 'meta/' |
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191 parts = _auxencode(le, dotencode) |
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192 basename = parts[-1] |
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193 _root, ext = os.path.splitext(basename) |
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194 sdirs = [] |
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195 sdirslen = 0 |
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196 for p in parts[:-1]: |
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197 d = p[:_dirprefixlen] |
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198 if d[-1] in '. ': |
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199 # Windows can't access dirs ending in period or space |
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200 d = d[:-1] + '_' |
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201 if sdirslen == 0: |
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202 t = len(d) |
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203 else: |
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204 t = sdirslen + 1 + len(d) |
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205 if t > _maxshortdirslen: |
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206 break |
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207 sdirs.append(d) |
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208 sdirslen = t |
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209 dirs = '/'.join(sdirs) |
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210 if len(dirs) > 0: |
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211 dirs += '/' |
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212 res = 'dh/' + dirs + digest + ext |
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213 spaceleft = _maxstorepathlen - len(res) |
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214 if spaceleft > 0: |
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215 filler = basename[:spaceleft] |
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216 res = 'dh/' + dirs + filler + digest + ext |
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217 return res |
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218 |
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219 def _hybridencode(path, dotencode): |
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220 '''encodes path with a length limit |
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221 |
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222 Encodes all paths that begin with 'data/', according to the following. |
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223 |
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224 Default encoding (reversible): |
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225 |
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226 Encodes all uppercase letters 'X' as '_x'. All reserved or illegal |
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227 characters are encoded as '~xx', where xx is the two digit hex code |
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228 of the character (see encodefilename). |
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229 Relevant path components consisting of Windows reserved filenames are |
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230 masked by encoding the third character ('aux' -> 'au~78', see _auxencode). |
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231 |
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232 Hashed encoding (not reversible): |
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233 |
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234 If the default-encoded path is longer than _maxstorepathlen, a |
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235 non-reversible hybrid hashing of the path is done instead. |
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236 This encoding uses up to _dirprefixlen characters of all directory |
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237 levels of the lowerencoded path, but not more levels than can fit into |
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238 _maxshortdirslen. |
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239 Then follows the filler followed by the sha digest of the full path. |
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240 The filler is the beginning of the basename of the lowerencoded path |
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241 (the basename is everything after the last path separator). The filler |
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242 is as long as possible, filling in characters from the basename until |
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243 the encoded path has _maxstorepathlen characters (or all chars of the |
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244 basename have been taken). |
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245 The extension (e.g. '.i' or '.d') is preserved. |
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246 |
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247 The string 'data/' at the beginning is replaced with 'dh/', if the hashed |
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248 encoding was used. |
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249 ''' |
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250 path = encodedir(path) |
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251 ef = _encodefname(path).split('/') |
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252 res = '/'.join(_auxencode(ef, dotencode)) |
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253 if len(res) > _maxstorepathlen: |
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254 res = _hashencode(path, dotencode) |
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255 return res |
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256 |
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257 def _pathencode(path): |
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258 de = encodedir(path) |
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259 if len(path) > _maxstorepathlen: |
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260 return _hashencode(de, True) |
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261 ef = _encodefname(de).split('/') |
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262 res = '/'.join(_auxencode(ef, True)) |
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263 if len(res) > _maxstorepathlen: |
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264 return _hashencode(de, True) |
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265 return res |
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266 |
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267 _pathencode = getattr(parsers, 'pathencode', _pathencode) |
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268 |
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269 def _plainhybridencode(f): |
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270 return _hybridencode(f, False) |
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271 |
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272 def _calcmode(vfs): |
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273 try: |
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274 # files in .hg/ will be created using this mode |
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275 mode = vfs.stat().st_mode |
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276 # avoid some useless chmods |
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277 if (0o777 & ~util.umask) == (0o777 & mode): |
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278 mode = None |
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279 except OSError: |
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280 mode = None |
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281 return mode |
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282 |
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283 _data = ('data 00manifest.d 00manifest.i 00changelog.d 00changelog.i' |
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284 ' phaseroots obsstore') |
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285 |
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286 class basicstore(object): |
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287 '''base class for local repository stores''' |
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288 def __init__(self, path, vfstype): |
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289 vfs = vfstype(path) |
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290 self.path = vfs.base |
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291 self.createmode = _calcmode(vfs) |
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292 vfs.createmode = self.createmode |
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293 self.rawvfs = vfs |
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294 self.vfs = scmutil.filtervfs(vfs, encodedir) |
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295 self.opener = self.vfs |
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296 |
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297 def join(self, f): |
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298 return self.path + '/' + encodedir(f) |
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299 |
6899 | 300 def _walk(self, relpath, recurse): |
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301 '''yields (unencoded, encoded, size)''' |
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302 path = self.path |
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303 if relpath: |
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304 path += '/' + relpath |
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305 striplen = len(self.path) + 1 |
6899 | 306 l = [] |
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307 if self.rawvfs.isdir(path): |
6899 | 308 visit = [path] |
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309 readdir = self.rawvfs.readdir |
6899 | 310 while visit: |
311 p = visit.pop() | |
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312 for f, kind, st in readdir(p, stat=True): |
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313 fp = p + '/' + f |
6899 | 314 if kind == stat.S_IFREG and f[-2:] in ('.d', '.i'): |
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315 n = util.pconvert(fp[striplen:]) |
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316 l.append((decodedir(n), n, st.st_size)) |
6899 | 317 elif kind == stat.S_IFDIR and recurse: |
318 visit.append(fp) | |
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319 l.sort() |
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320 return l |
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321 |
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322 def datafiles(self): |
6899 | 323 return self._walk('data', True) |
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324 |
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325 def topfiles(self): |
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326 # yield manifest before changelog |
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327 return reversed(self._walk('', False)) |
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328 |
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329 def walk(self): |
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330 '''yields (unencoded, encoded, size)''' |
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331 # yield data files first |
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332 for x in self.datafiles(): |
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333 yield x |
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334 for x in self.topfiles(): |
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335 yield x |
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336 |
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337 def copylist(self): |
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338 return ['requires'] + _data.split() |
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339 |
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340 def write(self, tr): |
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parents:
13169
diff
changeset
|
341 pass |
d00bbff8600e
fncachestore: defer updating the fncache file to a single file open
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parents:
13169
diff
changeset
|
342 |
20884
2efdd186925d
caches: invalidate store caches when lock is taken
Durham Goode <durham@fb.com>
parents:
20883
diff
changeset
|
343 def invalidatecaches(self): |
2efdd186925d
caches: invalidate store caches when lock is taken
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parents:
20883
diff
changeset
|
344 pass |
2efdd186925d
caches: invalidate store caches when lock is taken
Durham Goode <durham@fb.com>
parents:
20883
diff
changeset
|
345 |
20885
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
346 def markremoved(self, fn): |
f49d60fa40a5
fncache: clean up fncache during strips
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parents:
20884
diff
changeset
|
347 pass |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
348 |
17744 | 349 def __contains__(self, path): |
350 '''Checks if the store contains path''' | |
351 path = "/".join(("data", path)) | |
352 # file? | |
19903
ca875b271ac3
store: use "vfs.exists()" instead of "os.path.exists()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
19177
diff
changeset
|
353 if self.vfs.exists(path + ".i"): |
17744 | 354 return True |
355 # dir? | |
356 if not path.endswith("/"): | |
357 path = path + "/" | |
19903
ca875b271ac3
store: use "vfs.exists()" instead of "os.path.exists()"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
19177
diff
changeset
|
358 return self.vfs.exists(path) |
17744 | 359 |
6898
69aeaaaf6e07
store: simplify class hierarchy
Matt Mackall <mpm@selenic.com>
parents:
6897
diff
changeset
|
360 class encodedstore(basicstore): |
17651
3b49c28658f6
store: rename "openertype" argument to "vfstype"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17649
diff
changeset
|
361 def __init__(self, path, vfstype): |
17724
bf4b72d8dd4d
store: initialize vfs field first to use it for initialization of others
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17722
diff
changeset
|
362 vfs = vfstype(path + '/store') |
bf4b72d8dd4d
store: initialize vfs field first to use it for initialization of others
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17722
diff
changeset
|
363 self.path = vfs.base |
17726
7cb7e17c23b2
store: invoke "os.stat()" for "createmode" initialization via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17725
diff
changeset
|
364 self.createmode = _calcmode(vfs) |
17652
2c6f7231becc
store: rename "op" variables to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17651
diff
changeset
|
365 vfs.createmode = self.createmode |
17728
004bd533880d
store: invoke "os.path.isdir()" via vfs
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17727
diff
changeset
|
366 self.rawvfs = vfs |
17653
dacb50696b75
store: initialize "vfs" fields by "vfs" constructors
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17652
diff
changeset
|
367 self.vfs = scmutil.filtervfs(vfs, encodefilename) |
dacb50696b75
store: initialize "vfs" fields by "vfs" constructors
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17652
diff
changeset
|
368 self.opener = self.vfs |
6840
80e51429cb9a
introduce store classes
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parents:
6839
diff
changeset
|
369 |
6900
def492d1b592
store: change handling of decoding errors
Matt Mackall <mpm@selenic.com>
parents:
6899
diff
changeset
|
370 def datafiles(self): |
def492d1b592
store: change handling of decoding errors
Matt Mackall <mpm@selenic.com>
parents:
6899
diff
changeset
|
371 for a, b, size in self._walk('data', True): |
6892
dab95717058d
verify: check repo.store
Adrian Buehlmann <adrian@cadifra.com>
parents:
6890
diff
changeset
|
372 try: |
6900
def492d1b592
store: change handling of decoding errors
Matt Mackall <mpm@selenic.com>
parents:
6899
diff
changeset
|
373 a = decodefilename(a) |
6892
dab95717058d
verify: check repo.store
Adrian Buehlmann <adrian@cadifra.com>
parents:
6890
diff
changeset
|
374 except KeyError: |
6900
def492d1b592
store: change handling of decoding errors
Matt Mackall <mpm@selenic.com>
parents:
6899
diff
changeset
|
375 a = None |
def492d1b592
store: change handling of decoding errors
Matt Mackall <mpm@selenic.com>
parents:
6899
diff
changeset
|
376 yield a, b, size |
6840
80e51429cb9a
introduce store classes
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parents:
6839
diff
changeset
|
377 |
80e51429cb9a
introduce store classes
Adrian Buehlmann <adrian@cadifra.com>
parents:
6839
diff
changeset
|
378 def join(self, f): |
13426
643b8212813e
store: remove pointless pathjoiner parameter
Adrian Buehlmann <adrian@cadifra.com>
parents:
13391
diff
changeset
|
379 return self.path + '/' + encodefilename(f) |
6840
80e51429cb9a
introduce store classes
Adrian Buehlmann <adrian@cadifra.com>
parents:
6839
diff
changeset
|
380 |
6903
0642d9d7ec80
clone: get a list of files to clone from store
Matt Mackall <mpm@selenic.com>
parents:
6902
diff
changeset
|
381 def copylist(self): |
0642d9d7ec80
clone: get a list of files to clone from store
Matt Mackall <mpm@selenic.com>
parents:
6902
diff
changeset
|
382 return (['requires', '00changelog.i'] + |
13426
643b8212813e
store: remove pointless pathjoiner parameter
Adrian Buehlmann <adrian@cadifra.com>
parents:
13391
diff
changeset
|
383 ['store/' + f for f in _data.split()]) |
6903
0642d9d7ec80
clone: get a list of files to clone from store
Matt Mackall <mpm@selenic.com>
parents:
6902
diff
changeset
|
384 |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
385 class fncache(object): |
8531
810387f59696
filelog encoding: move the encoding/decoding into store
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8530
diff
changeset
|
386 # the filename used to be partially encoded |
810387f59696
filelog encoding: move the encoding/decoding into store
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8530
diff
changeset
|
387 # hence the encodedir/decodedir dance |
17722
3b976051034d
store: rename field name from "opener" to "vfs" in internal classes for fncache
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17721
diff
changeset
|
388 def __init__(self, vfs): |
3b976051034d
store: rename field name from "opener" to "vfs" in internal classes for fncache
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17721
diff
changeset
|
389 self.vfs = vfs |
7229
7946503ec76e
introduce fncache repository layout
Adrian Buehlmann <adrian@cadifra.com>
parents:
6989
diff
changeset
|
390 self.entries = None |
13391
d00bbff8600e
fncachestore: defer updating the fncache file to a single file open
Adrian Buehlmann <adrian@cadifra.com>
parents:
13169
diff
changeset
|
391 self._dirty = False |
7229
7946503ec76e
introduce fncache repository layout
Adrian Buehlmann <adrian@cadifra.com>
parents:
6989
diff
changeset
|
392 |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
393 def _load(self): |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
394 '''fill the entries from the fncache file''' |
13391
d00bbff8600e
fncachestore: defer updating the fncache file to a single file open
Adrian Buehlmann <adrian@cadifra.com>
parents:
13169
diff
changeset
|
395 self._dirty = False |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
396 try: |
17722
3b976051034d
store: rename field name from "opener" to "vfs" in internal classes for fncache
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17721
diff
changeset
|
397 fp = self.vfs('fncache', mode='rb') |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
398 except IOError: |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
399 # skip nonexistent file |
16404
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
400 self.entries = set() |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
401 return |
17604
bf9894889d82
store: optimize fncache._load a bit by dirdecoding the contents in one go
Adrian Buehlmann <adrian@cadifra.com>
parents:
17592
diff
changeset
|
402 self.entries = set(decodedir(fp.read()).splitlines()) |
16404
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
403 if '' in self.entries: |
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
404 fp.seek(0) |
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
405 for n, line in enumerate(fp): |
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
406 if not line.rstrip('\n'): |
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
407 t = _('invalid entry in fncache, line %s') % (n + 1) |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25660
diff
changeset
|
408 raise error.Abort(t) |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
409 fp.close() |
7229
7946503ec76e
introduce fncache repository layout
Adrian Buehlmann <adrian@cadifra.com>
parents:
6989
diff
changeset
|
410 |
20883
cd443c7589cc
fncache: move fncache writing to be in a transaction
Durham Goode <durham@fb.com>
parents:
20879
diff
changeset
|
411 def write(self, tr): |
16404
9fca5b056c0a
store: speed up read and write of large fncache files
Bryan O'Sullivan <bryano@fb.com>
parents:
15742
diff
changeset
|
412 if self._dirty: |
20883
cd443c7589cc
fncache: move fncache writing to be in a transaction
Durham Goode <durham@fb.com>
parents:
20879
diff
changeset
|
413 tr.addbackup('fncache') |
20879
cd03854a2e06
fncache: remove the rewriting logic
Durham Goode <durham@fb.com>
parents:
19903
diff
changeset
|
414 fp = self.vfs('fncache', mode='wb', atomictemp=True) |
cd03854a2e06
fncache: remove the rewriting logic
Durham Goode <durham@fb.com>
parents:
19903
diff
changeset
|
415 if self.entries: |
cd03854a2e06
fncache: remove the rewriting logic
Durham Goode <durham@fb.com>
parents:
19903
diff
changeset
|
416 fp.write(encodedir('\n'.join(self.entries) + '\n')) |
cd03854a2e06
fncache: remove the rewriting logic
Durham Goode <durham@fb.com>
parents:
19903
diff
changeset
|
417 fp.close() |
cd03854a2e06
fncache: remove the rewriting logic
Durham Goode <durham@fb.com>
parents:
19903
diff
changeset
|
418 self._dirty = False |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
419 |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
420 def add(self, fn): |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
421 if self.entries is None: |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
422 self._load() |
10577
d5bd1beff794
store: only add new entries to the fncache file
Adrian Buehlmann <adrian@cadifra.com>
parents:
10339
diff
changeset
|
423 if fn not in self.entries: |
13391
d00bbff8600e
fncachestore: defer updating the fncache file to a single file open
Adrian Buehlmann <adrian@cadifra.com>
parents:
13169
diff
changeset
|
424 self._dirty = True |
10577
d5bd1beff794
store: only add new entries to the fncache file
Adrian Buehlmann <adrian@cadifra.com>
parents:
10339
diff
changeset
|
425 self.entries.add(fn) |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
426 |
20885
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
427 def remove(self, fn): |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
428 if self.entries is None: |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
429 self._load() |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
430 try: |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
431 self.entries.remove(fn) |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
432 self._dirty = True |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
433 except KeyError: |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
434 pass |
f49d60fa40a5
fncache: clean up fncache during strips
Durham Goode <durham@fb.com>
parents:
20884
diff
changeset
|
435 |
17782
8095306c1fb2
store: move __contains__() implementation from class fncache into fncachestore
Adrian Buehlmann <adrian@cadifra.com>
parents:
17747
diff
changeset
|
436 def __contains__(self, fn): |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
437 if self.entries is None: |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
438 self._load() |
17782
8095306c1fb2
store: move __contains__() implementation from class fncache into fncachestore
Adrian Buehlmann <adrian@cadifra.com>
parents:
17747
diff
changeset
|
439 return fn in self.entries |
8530
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
440 |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
441 def __iter__(self): |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
442 if self.entries is None: |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
443 self._load() |
03196ac9a8b9
store: refactor the fncache handling
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
8480
diff
changeset
|
444 return iter(self.entries) |
7229
7946503ec76e
introduce fncache repository layout
Adrian Buehlmann <adrian@cadifra.com>
parents:
6989
diff
changeset
|
445 |
17845
408ded42c5ec
scmutil: abstract out mustaudit delegation
Bryan O'Sullivan <bryano@fb.com>
parents:
17784
diff
changeset
|
446 class _fncachevfs(scmutil.abstractvfs, scmutil.auditvfs): |
17721
cf236e3501c3
store: rename argument name from "op"(ener) to "vfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17693
diff
changeset
|
447 def __init__(self, vfs, fnc, encode): |
17845
408ded42c5ec
scmutil: abstract out mustaudit delegation
Bryan O'Sullivan <bryano@fb.com>
parents:
17784
diff
changeset
|
448 scmutil.auditvfs.__init__(self, vfs) |
14194
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
449 self.fncache = fnc |
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
450 self.encode = encode |
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
451 |
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
452 def __call__(self, path, mode='r', *args, **kw): |
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
453 if mode not in ('r', 'rb') and path.startswith('data/'): |
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
454 self.fncache.add(path) |
17722
3b976051034d
store: rename field name from "opener" to "vfs" in internal classes for fncache
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17721
diff
changeset
|
455 return self.vfs(self.encode(path), mode, *args, **kw) |
14194
3a90fb3addc1
store: break up reference cycle introduced in 9cbff8a39a2a
Adrian Buehlmann <adrian@cadifra.com>
parents:
14166
diff
changeset
|
456 |
17725
ffd589d4b785
vfs: define "join()" in each classes derived from "abstractvfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17724
diff
changeset
|
457 def join(self, path): |
ffd589d4b785
vfs: define "join()" in each classes derived from "abstractvfs"
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
17724
diff
changeset
|
458 if path: |
ffd589d4b785
vfs: define "join()" in each classes derived from "abstractvfs"
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459 return self.vfs.join(self.encode(path)) |
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460 else: |
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461 return self.vfs.join(path) |
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462 |
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463 class fncachestore(basicstore): |
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464 def __init__(self, path, vfstype, dotencode): |
17591
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465 if dotencode: |
18435
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store: switch to C-based hashed path encoding
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466 encode = _pathencode |
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467 else: |
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468 encode = _plainhybridencode |
12687
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store: encode first period or space in filenames (issue1713)
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469 self.encode = encode |
17724
bf4b72d8dd4d
store: initialize vfs field first to use it for initialization of others
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470 vfs = vfstype(path + '/store') |
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471 self.path = vfs.base |
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store: reduce string concatenation when joining
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472 self.pathsep = self.path + '/' |
17726
7cb7e17c23b2
store: invoke "os.stat()" for "createmode" initialization via vfs
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473 self.createmode = _calcmode(vfs) |
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2c6f7231becc
store: rename "op" variables to "vfs"
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474 vfs.createmode = self.createmode |
17727
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475 self.rawvfs = vfs |
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476 fnc = fncache(vfs) |
9133
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store: eliminate reference cycle in fncachestore
Simon Heimberg <simohe@besonet.ch>
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477 self.fncache = fnc |
17653
dacb50696b75
store: initialize "vfs" fields by "vfs" constructors
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478 self.vfs = _fncachevfs(vfs, fnc, encode) |
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479 self.opener = self.vfs |
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480 |
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481 def join(self, f): |
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482 return self.pathsep + self.encode(f) |
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483 |
17731
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484 def getsize(self, path): |
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485 return self.rawvfs.stat(path).st_size |
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486 |
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487 def datafiles(self): |
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488 for f in sorted(self.fncache): |
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489 ef = self.encode(f) |
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490 try: |
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491 yield f, ef, self.getsize(ef) |
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492 except OSError as err: |
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493 if err.errno != errno.ENOENT: |
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494 raise |
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495 |
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496 def copylist(self): |
17249
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clone: copy obsolete markers during local clone
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497 d = ('data dh fncache phaseroots obsstore' |
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498 ' 00manifest.d 00manifest.i 00changelog.d 00changelog.i') |
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499 return (['requires', '00changelog.i'] + |
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500 ['store/' + f for f in d.split()]) |
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501 |
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502 def write(self, tr): |
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503 self.fncache.write(tr) |
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504 |
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505 def invalidatecaches(self): |
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506 self.fncache.entries = None |
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507 |
20885
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508 def markremoved(self, fn): |
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509 self.fncache.remove(fn) |
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510 |
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511 def _exists(self, f): |
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512 ef = self.encode(f) |
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513 try: |
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514 self.getsize(ef) |
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515 return True |
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516 except OSError as err: |
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517 if err.errno != errno.ENOENT: |
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518 raise |
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519 # nonexistent entry |
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520 return False |
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521 |
17745 | 522 def __contains__(self, path): |
523 '''Checks if the store contains path''' | |
524 path = "/".join(("data", path)) | |
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525 # check for files (exact match) |
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526 e = path + '.i' |
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527 if e in self.fncache and self._exists(e): |
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528 return True |
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529 # now check for directories (prefix match) |
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530 if not path.endswith('/'): |
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531 path += '/' |
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532 for e in self.fncache: |
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533 if e.startswith(path) and self._exists(e): |
17782
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534 return True |
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535 return False |
17745 | 536 |
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537 def store(requirements, path, vfstype): |
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538 if 'store' in requirements: |
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539 if 'fncache' in requirements: |
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540 return fncachestore(path, vfstype, 'dotencode' in requirements) |
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541 return encodedstore(path, vfstype) |
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542 return basicstore(path, vfstype) |