Mercurial > hg
annotate mercurial/manifest.py @ 26061:be8a4e0800d8
reachableroots: use baseset lazy sorting
smartset sorting is lazy (so faster in some case) and better (informs that the
set is sorted allowing some optimisation). So we rely on it directly.
Some test output are updated because we now have more information (ordering).
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Thu, 20 Aug 2015 17:23:21 -0700 |
parents | c436ba9d6ac0 |
children | 5411059d93f8 |
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1089 | 1 # manifest.py - manifest revision class for mercurial |
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2 # |
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3 # Copyright 2005-2007 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 |
3891 | 8 from i18n import _ |
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9 import mdiff, parsers, error, revlog, util |
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10 import array, struct |
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11 import os |
79 | 12 |
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13 propertycache = util.propertycache |
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14 |
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15 def _parsev1(data): |
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16 # This method does a little bit of excessive-looking |
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17 # precondition checking. This is so that the behavior of this |
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18 # class exactly matches its C counterpart to try and help |
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19 # prevent surprise breakage for anyone that develops against |
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20 # the pure version. |
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21 if data and data[-1] != '\n': |
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22 raise ValueError('Manifest did not end in a newline.') |
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23 prev = None |
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24 for l in data.splitlines(): |
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25 if prev is not None and prev > l: |
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26 raise ValueError('Manifest lines not in sorted order.') |
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27 prev = l |
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28 f, n = l.split('\0') |
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29 if len(n) > 40: |
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30 yield f, revlog.bin(n[:40]), n[40:] |
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31 else: |
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32 yield f, revlog.bin(n), '' |
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33 |
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34 def _parsev2(data): |
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35 metadataend = data.find('\n') |
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36 # Just ignore metadata for now |
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37 pos = metadataend + 1 |
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38 prevf = '' |
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39 while pos < len(data): |
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40 end = data.find('\n', pos + 1) # +1 to skip stem length byte |
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41 if end == -1: |
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42 raise ValueError('Manifest ended with incomplete file entry.') |
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43 stemlen = ord(data[pos]) |
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44 items = data[pos + 1:end].split('\0') |
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45 f = prevf[:stemlen] + items[0] |
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46 if prevf > f: |
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47 raise ValueError('Manifest entries not in sorted order.') |
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48 fl = items[1] |
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49 # Just ignore metadata (items[2:] for now) |
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50 n = data[end + 1:end + 21] |
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51 yield f, n, fl |
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52 pos = end + 22 |
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53 prevf = f |
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54 |
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55 def _parse(data): |
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56 """Generates (path, node, flags) tuples from a manifest text""" |
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57 if data.startswith('\0'): |
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58 return iter(_parsev2(data)) |
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59 else: |
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60 return iter(_parsev1(data)) |
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61 |
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62 def _text(it, usemanifestv2): |
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63 """Given an iterator over (path, node, flags) tuples, returns a manifest |
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64 text""" |
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65 if usemanifestv2: |
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66 return _textv2(it) |
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67 else: |
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68 return _textv1(it) |
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69 |
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70 def _textv1(it): |
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71 files = [] |
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72 lines = [] |
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73 _hex = revlog.hex |
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74 for f, n, fl in it: |
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75 files.append(f) |
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76 # if this is changed to support newlines in filenames, |
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77 # be sure to check the templates/ dir again (especially *-raw.tmpl) |
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78 lines.append("%s\0%s%s\n" % (f, _hex(n), fl)) |
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79 |
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80 _checkforbidden(files) |
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81 return ''.join(lines) |
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82 |
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83 def _textv2(it): |
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84 files = [] |
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85 lines = ['\0\n'] |
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86 prevf = '' |
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87 for f, n, fl in it: |
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88 files.append(f) |
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89 stem = os.path.commonprefix([prevf, f]) |
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90 stemlen = min(len(stem), 255) |
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91 lines.append("%c%s\0%s\n%s\n" % (stemlen, f[stemlen:], fl, n)) |
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92 prevf = f |
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93 _checkforbidden(files) |
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94 return ''.join(lines) |
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95 |
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96 class _lazymanifest(dict): |
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97 """This is the pure implementation of lazymanifest. |
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98 |
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99 It has not been optimized *at all* and is not lazy. |
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100 """ |
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101 |
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102 def __init__(self, data): |
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103 dict.__init__(self) |
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104 for f, n, fl in _parse(data): |
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105 self[f] = n, fl |
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106 |
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107 def __setitem__(self, k, v): |
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108 node, flag = v |
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109 assert node is not None |
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110 if len(node) > 21: |
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111 node = node[:21] # match c implementation behavior |
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112 dict.__setitem__(self, k, (node, flag)) |
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113 |
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114 def __iter__(self): |
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115 return iter(sorted(dict.keys(self))) |
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116 |
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117 def iterkeys(self): |
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118 return iter(sorted(dict.keys(self))) |
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119 |
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120 def iterentries(self): |
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121 return ((f, e[0], e[1]) for f, e in sorted(self.iteritems())) |
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122 |
2831 | 123 def copy(self): |
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124 c = _lazymanifest('') |
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125 c.update(self) |
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126 return c |
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127 |
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128 def diff(self, m2, clean=False): |
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129 '''Finds changes between the current manifest and m2.''' |
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130 diff = {} |
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131 |
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132 for fn, e1 in self.iteritems(): |
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133 if fn not in m2: |
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134 diff[fn] = e1, (None, '') |
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135 else: |
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136 e2 = m2[fn] |
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137 if e1 != e2: |
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138 diff[fn] = e1, e2 |
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139 elif clean: |
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140 diff[fn] = None |
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141 |
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142 for fn, e2 in m2.iteritems(): |
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143 if fn not in self: |
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144 diff[fn] = (None, ''), e2 |
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145 |
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146 return diff |
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147 |
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148 def filtercopy(self, filterfn): |
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149 c = _lazymanifest('') |
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150 for f, n, fl in self.iterentries(): |
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151 if filterfn(f): |
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152 c[f] = n, fl |
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153 return c |
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154 |
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155 def text(self): |
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156 """Get the full data of this manifest as a bytestring.""" |
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157 return _textv1(self.iterentries()) |
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158 |
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159 try: |
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160 _lazymanifest = parsers.lazymanifest |
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161 except AttributeError: |
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162 pass |
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163 |
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164 class manifestdict(object): |
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165 def __init__(self, data=''): |
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166 if data.startswith('\0'): |
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167 #_lazymanifest can not parse v2 |
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168 self._lm = _lazymanifest('') |
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169 for f, n, fl in _parsev2(data): |
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170 self._lm[f] = n, fl |
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171 else: |
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172 self._lm = _lazymanifest(data) |
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173 |
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174 def __getitem__(self, key): |
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175 return self._lm[key][0] |
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176 |
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177 def find(self, key): |
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178 return self._lm[key] |
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179 |
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180 def __len__(self): |
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181 return len(self._lm) |
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182 |
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183 def __setitem__(self, key, node): |
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184 self._lm[key] = node, self.flags(key, '') |
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185 |
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186 def __contains__(self, key): |
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187 return key in self._lm |
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188 |
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189 def __delitem__(self, key): |
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190 del self._lm[key] |
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191 |
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192 def __iter__(self): |
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193 return self._lm.__iter__() |
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194 |
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195 def iterkeys(self): |
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196 return self._lm.iterkeys() |
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197 |
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198 def keys(self): |
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199 return list(self.iterkeys()) |
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200 |
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201 def filesnotin(self, m2): |
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202 '''Set of files in this manifest that are not in the other''' |
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203 files = set(self) |
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204 files.difference_update(m2) |
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205 return files |
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206 |
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207 @propertycache |
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208 def _dirs(self): |
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209 return util.dirs(self) |
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210 |
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211 def dirs(self): |
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212 return self._dirs |
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213 |
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214 def hasdir(self, dir): |
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215 return dir in self._dirs |
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216 |
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217 def _filesfastpath(self, match): |
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218 '''Checks whether we can correctly and quickly iterate over matcher |
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219 files instead of over manifest files.''' |
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220 files = match.files() |
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221 return (len(files) < 100 and (match.isexact() or |
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222 (match.prefix() and all(fn in self for fn in files)))) |
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223 |
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224 def walk(self, match): |
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225 '''Generates matching file names. |
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226 |
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227 Equivalent to manifest.matches(match).iterkeys(), but without creating |
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228 an entirely new manifest. |
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229 |
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230 It also reports nonexistent files by marking them bad with match.bad(). |
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231 ''' |
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232 if match.always(): |
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233 for f in iter(self): |
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234 yield f |
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235 return |
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236 |
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237 fset = set(match.files()) |
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238 |
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239 # avoid the entire walk if we're only looking for specific files |
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240 if self._filesfastpath(match): |
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241 for fn in sorted(fset): |
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242 yield fn |
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243 return |
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244 |
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245 for fn in self: |
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246 if fn in fset: |
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247 # specified pattern is the exact name |
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248 fset.remove(fn) |
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249 if match(fn): |
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250 yield fn |
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251 |
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252 # for dirstate.walk, files=['.'] means "walk the whole tree". |
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253 # follow that here, too |
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254 fset.discard('.') |
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255 |
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256 for fn in sorted(fset): |
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257 if not self.hasdir(fn): |
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258 match.bad(fn, None) |
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259 |
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260 def matches(self, match): |
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261 '''generate a new manifest filtered by the match argument''' |
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262 if match.always(): |
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263 return self.copy() |
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264 |
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265 if self._filesfastpath(match): |
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266 m = manifestdict() |
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267 lm = self._lm |
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268 for fn in match.files(): |
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269 if fn in lm: |
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270 m._lm[fn] = lm[fn] |
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271 return m |
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272 |
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273 m = manifestdict() |
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274 m._lm = self._lm.filtercopy(match) |
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275 return m |
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276 |
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277 def diff(self, m2, clean=False): |
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278 '''Finds changes between the current manifest and m2. |
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279 |
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280 Args: |
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281 m2: the manifest to which this manifest should be compared. |
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282 clean: if true, include files unchanged between these manifests |
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283 with a None value in the returned dictionary. |
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284 |
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285 The result is returned as a dict with filename as key and |
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286 values of the form ((n1,fl1),(n2,fl2)), where n1/n2 is the |
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287 nodeid in the current/other manifest and fl1/fl2 is the flag |
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288 in the current/other manifest. Where the file does not exist, |
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289 the nodeid will be None and the flags will be the empty |
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290 string. |
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291 ''' |
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292 return self._lm.diff(m2._lm, clean) |
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293 |
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294 def setflag(self, key, flag): |
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295 self._lm[key] = self[key], flag |
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296 |
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297 def get(self, key, default=None): |
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298 try: |
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299 return self._lm[key][0] |
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300 except KeyError: |
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301 return default |
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302 |
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303 def flags(self, key, default=''): |
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304 try: |
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305 return self._lm[key][1] |
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306 except KeyError: |
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307 return default |
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308 |
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309 def copy(self): |
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310 c = manifestdict() |
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311 c._lm = self._lm.copy() |
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312 return c |
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313 |
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314 def iteritems(self): |
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315 return (x[:2] for x in self._lm.iterentries()) |
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317 def text(self, usemanifestv2=False): |
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318 if usemanifestv2: |
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319 return _textv2(self._lm.iterentries()) |
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320 else: |
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321 # use (probably) native version for v1 |
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322 return self._lm.text() |
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323 |
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324 def fastdelta(self, base, changes): |
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325 """Given a base manifest text as an array.array and a list of changes |
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326 relative to that text, compute a delta that can be used by revlog. |
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327 """ |
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328 delta = [] |
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329 dstart = None |
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330 dend = None |
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331 dline = [""] |
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332 start = 0 |
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333 # zero copy representation of base as a buffer |
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334 addbuf = util.buffer(base) |
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335 |
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336 # start with a readonly loop that finds the offset of |
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337 # each line and creates the deltas |
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338 for f, todelete in changes: |
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339 # bs will either be the index of the item or the insert point |
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340 start, end = _msearch(addbuf, f, start) |
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341 if not todelete: |
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342 h, fl = self._lm[f] |
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343 l = "%s\0%s%s\n" % (f, revlog.hex(h), fl) |
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344 else: |
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345 if start == end: |
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346 # item we want to delete was not found, error out |
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347 raise AssertionError( |
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348 _("failed to remove %s from manifest") % f) |
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349 l = "" |
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350 if dstart is not None and dstart <= start and dend >= start: |
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351 if dend < end: |
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352 dend = end |
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353 if l: |
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354 dline.append(l) |
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355 else: |
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356 if dstart is not None: |
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357 delta.append([dstart, dend, "".join(dline)]) |
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358 dstart = start |
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359 dend = end |
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360 dline = [l] |
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361 |
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362 if dstart is not None: |
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363 delta.append([dstart, dend, "".join(dline)]) |
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364 # apply the delta to the base, and get a delta for addrevision |
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365 deltatext, arraytext = _addlistdelta(base, delta) |
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366 return arraytext, deltatext |
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367 |
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368 def _msearch(m, s, lo=0, hi=None): |
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369 '''return a tuple (start, end) that says where to find s within m. |
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370 |
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371 If the string is found m[start:end] are the line containing |
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372 that string. If start == end the string was not found and |
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373 they indicate the proper sorted insertion point. |
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374 |
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375 m should be a buffer or a string |
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376 s is a string''' |
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377 def advance(i, c): |
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378 while i < lenm and m[i] != c: |
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379 i += 1 |
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380 return i |
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381 if not s: |
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382 return (lo, lo) |
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383 lenm = len(m) |
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384 if not hi: |
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385 hi = lenm |
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386 while lo < hi: |
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387 mid = (lo + hi) // 2 |
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388 start = mid |
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389 while start > 0 and m[start - 1] != '\n': |
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390 start -= 1 |
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391 end = advance(start, '\0') |
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392 if m[start:end] < s: |
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393 # we know that after the null there are 40 bytes of sha1 |
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394 # this translates to the bisect lo = mid + 1 |
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395 lo = advance(end + 40, '\n') + 1 |
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396 else: |
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397 # this translates to the bisect hi = mid |
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398 hi = start |
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399 end = advance(lo, '\0') |
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400 found = m[lo:end] |
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401 if s == found: |
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402 # we know that after the null there are 40 bytes of sha1 |
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403 end = advance(end + 40, '\n') |
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404 return (lo, end + 1) |
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405 else: |
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406 return (lo, lo) |
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407 |
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408 def _checkforbidden(l): |
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409 """Check filenames for illegal characters.""" |
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410 for f in l: |
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411 if '\n' in f or '\r' in f: |
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412 raise error.RevlogError( |
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413 _("'\\n' and '\\r' disallowed in filenames: %r") % f) |
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414 |
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415 |
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416 # apply the changes collected during the bisect loop to our addlist |
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417 # return a delta suitable for addrevision |
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418 def _addlistdelta(addlist, x): |
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419 # for large addlist arrays, building a new array is cheaper |
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420 # than repeatedly modifying the existing one |
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421 currentposition = 0 |
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422 newaddlist = array.array('c') |
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423 |
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424 for start, end, content in x: |
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425 newaddlist += addlist[currentposition:start] |
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426 if content: |
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427 newaddlist += array.array('c', content) |
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428 |
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429 currentposition = end |
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430 |
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431 newaddlist += addlist[currentposition:] |
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432 |
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433 deltatext = "".join(struct.pack(">lll", start, end, len(content)) |
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434 + content for start, end, content in x) |
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435 return deltatext, newaddlist |
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436 |
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437 def _splittopdir(f): |
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438 if '/' in f: |
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439 dir, subpath = f.split('/', 1) |
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440 return dir + '/', subpath |
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441 else: |
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442 return '', f |
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443 |
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444 _noop = lambda: None |
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445 |
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446 class treemanifest(object): |
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447 def __init__(self, dir='', text=''): |
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448 self._dir = dir |
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449 self._node = revlog.nullid |
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450 self._load = _noop |
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451 self._dirty = False |
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452 self._dirs = {} |
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453 # Using _lazymanifest here is a little slower than plain old dicts |
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454 self._files = {} |
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455 self._flags = {} |
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456 if text: |
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457 def readsubtree(subdir, subm): |
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458 raise AssertionError('treemanifest constructor only accepts ' |
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459 'flat manifests') |
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460 self.parse(text, readsubtree) |
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461 self._dirty = True # Mark flat manifest dirty after parsing |
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462 |
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463 def _subpath(self, path): |
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464 return self._dir + path |
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465 |
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466 def __len__(self): |
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467 self._load() |
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468 size = len(self._files) |
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469 for m in self._dirs.values(): |
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470 size += m.__len__() |
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471 return size |
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472 |
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473 def _isempty(self): |
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474 self._load() # for consistency; already loaded by all callers |
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475 return (not self._files and (not self._dirs or |
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476 all(m._isempty() for m in self._dirs.values()))) |
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477 |
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478 def __str__(self): |
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479 return ('<treemanifest dir=%s, node=%s, loaded=%s, dirty=%s>' % |
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480 (self._dir, revlog.hex(self._node), |
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481 bool(self._load is _noop), |
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482 self._dirty)) |
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483 |
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484 def dir(self): |
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485 '''The directory that this tree manifest represents, including a |
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486 trailing '/'. Empty string for the repo root directory.''' |
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487 return self._dir |
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488 |
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489 def node(self): |
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490 '''This node of this instance. nullid for unsaved instances. Should |
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491 be updated when the instance is read or written from a revlog. |
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492 ''' |
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493 assert not self._dirty |
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494 return self._node |
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495 |
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496 def setnode(self, node): |
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497 self._node = node |
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498 self._dirty = False |
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499 |
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500 def iteritems(self): |
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501 self._load() |
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502 for p, n in sorted(self._dirs.items() + self._files.items()): |
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503 if p in self._files: |
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504 yield self._subpath(p), n |
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505 else: |
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506 for f, sn in n.iteritems(): |
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507 yield f, sn |
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508 |
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509 def iterkeys(self): |
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510 self._load() |
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511 for p in sorted(self._dirs.keys() + self._files.keys()): |
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512 if p in self._files: |
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513 yield self._subpath(p) |
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514 else: |
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515 for f in self._dirs[p].iterkeys(): |
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516 yield f |
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517 |
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518 def keys(self): |
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519 return list(self.iterkeys()) |
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520 |
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521 def __iter__(self): |
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522 return self.iterkeys() |
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523 |
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524 def __contains__(self, f): |
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525 if f is None: |
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526 return False |
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527 self._load() |
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528 dir, subpath = _splittopdir(f) |
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529 if dir: |
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530 if dir not in self._dirs: |
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531 return False |
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532 return self._dirs[dir].__contains__(subpath) |
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533 else: |
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534 return f in self._files |
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535 |
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536 def get(self, f, default=None): |
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537 self._load() |
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538 dir, subpath = _splittopdir(f) |
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539 if dir: |
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540 if dir not in self._dirs: |
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541 return default |
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542 return self._dirs[dir].get(subpath, default) |
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543 else: |
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544 return self._files.get(f, default) |
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545 |
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546 def __getitem__(self, f): |
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547 self._load() |
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548 dir, subpath = _splittopdir(f) |
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549 if dir: |
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550 return self._dirs[dir].__getitem__(subpath) |
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551 else: |
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552 return self._files[f] |
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|
553 |
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554 def flags(self, f): |
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555 self._load() |
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556 dir, subpath = _splittopdir(f) |
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557 if dir: |
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558 if dir not in self._dirs: |
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559 return '' |
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560 return self._dirs[dir].flags(subpath) |
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561 else: |
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562 if f in self._dirs: |
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563 return '' |
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564 return self._flags.get(f, '') |
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565 |
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566 def find(self, f): |
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567 self._load() |
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568 dir, subpath = _splittopdir(f) |
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|
569 if dir: |
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570 return self._dirs[dir].find(subpath) |
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571 else: |
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572 return self._files[f], self._flags.get(f, '') |
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573 |
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574 def __delitem__(self, f): |
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575 self._load() |
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576 dir, subpath = _splittopdir(f) |
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577 if dir: |
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578 self._dirs[dir].__delitem__(subpath) |
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579 # If the directory is now empty, remove it |
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580 if self._dirs[dir]._isempty(): |
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581 del self._dirs[dir] |
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582 else: |
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583 del self._files[f] |
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584 if f in self._flags: |
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585 del self._flags[f] |
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586 self._dirty = True |
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|
587 |
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588 def __setitem__(self, f, n): |
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589 assert n is not None |
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590 self._load() |
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591 dir, subpath = _splittopdir(f) |
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592 if dir: |
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593 if dir not in self._dirs: |
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594 self._dirs[dir] = treemanifest(self._subpath(dir)) |
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595 self._dirs[dir].__setitem__(subpath, n) |
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596 else: |
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597 self._files[f] = n[:21] # to match manifestdict's behavior |
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598 self._dirty = True |
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599 |
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600 def setflag(self, f, flags): |
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601 """Set the flags (symlink, executable) for path f.""" |
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602 assert 'd' not in flags |
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603 self._load() |
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604 dir, subpath = _splittopdir(f) |
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605 if dir: |
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606 if dir not in self._dirs: |
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607 self._dirs[dir] = treemanifest(self._subpath(dir)) |
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608 self._dirs[dir].setflag(subpath, flags) |
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609 else: |
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610 self._flags[f] = flags |
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611 self._dirty = True |
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612 |
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613 def copy(self): |
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614 copy = treemanifest(self._dir) |
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615 copy._node = self._node |
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616 copy._dirty = self._dirty |
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617 def _load(): |
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618 self._load() |
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619 for d in self._dirs: |
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620 copy._dirs[d] = self._dirs[d].copy() |
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621 copy._files = dict.copy(self._files) |
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622 copy._flags = dict.copy(self._flags) |
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623 copy._load = _noop |
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624 copy._load = _load |
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625 if self._load == _noop: |
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626 # Chaining _load if it's _noop is functionally correct, but the |
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627 # chain may end up excessively long (stack overflow), and |
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628 # will prevent garbage collection of 'self'. |
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629 copy._load() |
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630 return copy |
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631 |
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632 def filesnotin(self, m2): |
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633 '''Set of files in this manifest that are not in the other''' |
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634 files = set() |
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635 def _filesnotin(t1, t2): |
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636 if t1._node == t2._node and not t1._dirty and not t2._dirty: |
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637 return |
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638 t1._load() |
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639 t2._load() |
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640 for d, m1 in t1._dirs.iteritems(): |
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641 if d in t2._dirs: |
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642 m2 = t2._dirs[d] |
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643 _filesnotin(m1, m2) |
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644 else: |
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645 files.update(m1.iterkeys()) |
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646 |
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647 for fn in t1._files.iterkeys(): |
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648 if fn not in t2._files: |
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649 files.add(t1._subpath(fn)) |
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650 |
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651 _filesnotin(self, m2) |
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652 return files |
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|
653 |
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|
654 @propertycache |
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655 def _alldirs(self): |
24635
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656 return util.dirs(self) |
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657 |
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658 def dirs(self): |
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659 return self._alldirs |
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660 |
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|
661 def hasdir(self, dir): |
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662 self._load() |
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663 topdir, subdir = _splittopdir(dir) |
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664 if topdir: |
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665 if topdir in self._dirs: |
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666 return self._dirs[topdir].hasdir(subdir) |
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667 return False |
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668 return (dir + '/') in self._dirs |
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669 |
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670 def walk(self, match): |
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671 '''Generates matching file names. |
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672 |
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673 Equivalent to manifest.matches(match).iterkeys(), but without creating |
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674 an entirely new manifest. |
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675 |
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676 It also reports nonexistent files by marking them bad with match.bad(). |
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677 ''' |
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678 if match.always(): |
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679 for f in iter(self): |
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680 yield f |
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681 return |
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682 |
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683 fset = set(match.files()) |
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684 |
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685 for fn in self._walk(match): |
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686 if fn in fset: |
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687 # specified pattern is the exact name |
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688 fset.remove(fn) |
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689 yield fn |
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690 |
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691 # for dirstate.walk, files=['.'] means "walk the whole tree". |
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692 # follow that here, too |
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693 fset.discard('.') |
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694 |
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695 for fn in sorted(fset): |
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696 if not self.hasdir(fn): |
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697 match.bad(fn, None) |
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|
698 |
25188
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699 def _walk(self, match): |
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700 '''Recursively generates matching file names for walk().''' |
2773540c3650
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701 if not match.visitdir(self._dir[:-1] or '.'): |
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702 return |
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|
703 |
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|
704 # yield this dir's files and walk its submanifests |
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705 self._load() |
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|
706 for p in sorted(self._dirs.keys() + self._files.keys()): |
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707 if p in self._files: |
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708 fullp = self._subpath(p) |
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709 if match(fullp): |
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|
710 yield fullp |
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711 else: |
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|
712 for f in self._dirs[p]._walk(match): |
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713 yield f |
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|
714 |
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715 def matches(self, match): |
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716 '''generate a new manifest filtered by the match argument''' |
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717 if match.always(): |
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718 return self.copy() |
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719 |
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720 return self._matches(match) |
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721 |
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722 def _matches(self, match): |
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723 '''recursively generate a new manifest filtered by the match argument. |
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724 ''' |
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725 ret = treemanifest(self._dir) |
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726 |
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727 if not match.visitdir(self._dir[:-1] or '.'): |
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|
728 return ret |
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|
729 |
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|
730 self._load() |
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731 for fn in self._files: |
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732 fullp = self._subpath(fn) |
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733 if not match(fullp): |
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734 continue |
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735 ret._files[fn] = self._files[fn] |
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736 if fn in self._flags: |
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737 ret._flags[fn] = self._flags[fn] |
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738 |
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739 for dir, subm in self._dirs.iteritems(): |
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740 m = subm._matches(match) |
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741 if not m._isempty(): |
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742 ret._dirs[dir] = m |
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743 |
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744 if not ret._isempty(): |
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745 ret._dirty = True |
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746 return ret |
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747 |
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748 def diff(self, m2, clean=False): |
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749 '''Finds changes between the current manifest and m2. |
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750 |
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|
751 Args: |
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752 m2: the manifest to which this manifest should be compared. |
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753 clean: if true, include files unchanged between these manifests |
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754 with a None value in the returned dictionary. |
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|
755 |
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756 The result is returned as a dict with filename as key and |
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757 values of the form ((n1,fl1),(n2,fl2)), where n1/n2 is the |
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758 nodeid in the current/other manifest and fl1/fl2 is the flag |
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759 in the current/other manifest. Where the file does not exist, |
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|
760 the nodeid will be None and the flags will be the empty |
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|
761 string. |
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|
762 ''' |
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|
763 result = {} |
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|
764 emptytree = treemanifest() |
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765 def _diff(t1, t2): |
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766 if t1._node == t2._node and not t1._dirty and not t2._dirty: |
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|
767 return |
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|
768 t1._load() |
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|
769 t2._load() |
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770 for d, m1 in t1._dirs.iteritems(): |
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771 m2 = t2._dirs.get(d, emptytree) |
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|
772 _diff(m1, m2) |
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|
773 |
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|
774 for d, m2 in t2._dirs.iteritems(): |
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|
775 if d not in t1._dirs: |
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|
776 _diff(emptytree, m2) |
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|
777 |
24404
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|
778 for fn, n1 in t1._files.iteritems(): |
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|
779 fl1 = t1._flags.get(fn, '') |
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|
780 n2 = t2._files.get(fn, None) |
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781 fl2 = t2._flags.get(fn, '') |
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|
782 if n1 != n2 or fl1 != fl2: |
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|
783 result[t1._subpath(fn)] = ((n1, fl1), (n2, fl2)) |
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|
784 elif clean: |
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|
785 result[t1._subpath(fn)] = None |
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|
786 |
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|
787 for fn, n2 in t2._files.iteritems(): |
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|
788 if fn not in t1._files: |
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|
789 fl2 = t2._flags.get(fn, '') |
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790 result[t2._subpath(fn)] = ((None, ''), (n2, fl2)) |
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|
791 |
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|
792 _diff(self, m2) |
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|
793 return result |
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|
794 |
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|
795 def unmodifiedsince(self, m2): |
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796 return not self._dirty and not m2._dirty and self._node == m2._node |
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|
797 |
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|
798 def parse(self, text, readsubtree): |
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|
799 for f, n, fl in _parse(text): |
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|
800 if fl == 'd': |
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|
801 f = f + '/' |
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|
802 self._dirs[f] = readsubtree(self._subpath(f), n) |
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803 elif '/' in f: |
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|
804 # This is a flat manifest, so use __setitem__ and setflag rather |
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|
805 # than assigning directly to _files and _flags, so we can |
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|
806 # assign a path in a subdirectory, and to mark dirty (compared |
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|
807 # to nullid). |
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|
808 self[f] = n |
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|
809 if fl: |
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|
810 self.setflag(f, fl) |
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811 else: |
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|
812 # Assigning to _files and _flags avoids marking as dirty, |
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|
813 # and should be a little faster. |
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|
814 self._files[f] = n |
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|
815 if fl: |
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816 self._flags[f] = fl |
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|
817 |
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|
818 def text(self, usemanifestv2=False): |
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|
819 """Get the full data of this manifest as a bytestring.""" |
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|
820 self._load() |
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|
821 flags = self.flags |
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822 return _text(((f, self[f], flags(f)) for f in self.keys()), |
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823 usemanifestv2) |
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824 |
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825 def dirtext(self, usemanifestv2=False): |
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826 """Get the full data of this directory as a bytestring. Make sure that |
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827 any submanifests have been written first, so their nodeids are correct. |
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828 """ |
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829 self._load() |
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830 flags = self.flags |
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831 dirs = [(d[:-1], self._dirs[d]._node, 'd') for d in self._dirs] |
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832 files = [(f, self._files[f], flags(f)) for f in self._files] |
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833 return _text(sorted(dirs + files), usemanifestv2) |
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834 |
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835 def read(self, gettext, readsubtree): |
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836 def _load(): |
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837 # Mark as loaded already here, so __setitem__ and setflag() don't |
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838 # cause infinite loops when they try to load. |
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839 self._load = _noop |
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840 self.parse(gettext(), readsubtree) |
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841 self._dirty = False |
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842 self._load = _load |
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843 |
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844 def writesubtrees(self, m1, m2, writesubtree): |
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845 self._load() # for consistency; should never have any effect here |
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846 emptytree = treemanifest() |
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847 for d, subm in self._dirs.iteritems(): |
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848 subp1 = m1._dirs.get(d, emptytree)._node |
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849 subp2 = m2._dirs.get(d, emptytree)._node |
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850 if subp1 == revlog.nullid: |
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851 subp1, subp2 = subp2, subp1 |
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852 writesubtree(subm, subp1, subp2) |
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853 |
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854 class manifest(revlog.revlog): |
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855 def __init__(self, opener, dir='', dirlogcache=None): |
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856 '''The 'dir' and 'dirlogcache' arguments are for internal use by |
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857 manifest.manifest only. External users should create a root manifest |
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858 log with manifest.manifest(opener) and call dirlog() on it. |
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859 ''' |
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860 # During normal operations, we expect to deal with not more than four |
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861 # revs at a time (such as during commit --amend). When rebasing large |
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862 # stacks of commits, the number can go up, hence the config knob below. |
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863 cachesize = 4 |
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864 usetreemanifest = False |
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865 usemanifestv2 = False |
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866 opts = getattr(opener, 'options', None) |
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867 if opts is not None: |
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868 cachesize = opts.get('manifestcachesize', cachesize) |
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869 usetreemanifest = opts.get('treemanifest', usetreemanifest) |
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870 usemanifestv2 = opts.get('manifestv2', usemanifestv2) |
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871 self._mancache = util.lrucachedict(cachesize) |
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872 self._treeinmem = usetreemanifest |
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873 self._treeondisk = usetreemanifest |
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874 self._usemanifestv2 = usemanifestv2 |
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875 indexfile = "00manifest.i" |
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876 if dir: |
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877 assert self._treeondisk |
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878 if not dir.endswith('/'): |
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879 dir = dir + '/' |
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880 indexfile = "meta/" + dir + "00manifest.i" |
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881 revlog.revlog.__init__(self, opener, indexfile) |
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882 self._dir = dir |
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883 # The dirlogcache is kept on the root manifest log |
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884 if dir: |
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885 self._dirlogcache = dirlogcache |
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886 else: |
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887 self._dirlogcache = {'': self} |
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888 |
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889 def _newmanifest(self, data=''): |
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890 if self._treeinmem: |
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891 return treemanifest(self._dir, data) |
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892 return manifestdict(data) |
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893 |
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894 def dirlog(self, dir): |
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895 assert self._treeondisk |
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896 if dir not in self._dirlogcache: |
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897 self._dirlogcache[dir] = manifest(self.opener, dir, |
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898 self._dirlogcache) |
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899 return self._dirlogcache[dir] |
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900 |
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901 def _slowreaddelta(self, node): |
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902 r0 = self.deltaparent(self.rev(node)) |
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903 m0 = self.read(self.node(r0)) |
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904 m1 = self.read(node) |
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905 md = self._newmanifest() |
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906 for f, ((n0, fl0), (n1, fl1)) in m0.diff(m1).iteritems(): |
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907 if n1: |
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908 md[f] = n1 |
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909 if fl1: |
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910 md.setflag(f, fl1) |
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911 return md |
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|
912 |
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|
913 def readdelta(self, node): |
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914 if self._usemanifestv2 or self._treeondisk: |
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915 return self._slowreaddelta(node) |
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916 r = self.rev(node) |
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917 d = mdiff.patchtext(self.revdiff(self.deltaparent(r), r)) |
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918 return self._newmanifest(d) |
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919 |
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920 def readfast(self, node): |
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921 '''use the faster of readdelta or read |
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922 |
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923 This will return a manifest which is either only the files |
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924 added/modified relative to p1, or all files in the |
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925 manifest. Which one is returned depends on the codepath used |
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926 to retrieve the data. |
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927 ''' |
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928 r = self.rev(node) |
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929 deltaparent = self.deltaparent(r) |
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930 if deltaparent != revlog.nullrev and deltaparent in self.parentrevs(r): |
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931 return self.readdelta(node) |
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932 return self.read(node) |
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933 |
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|
934 def read(self, node): |
7634
14a4337a9b9b
revlog: kill from-style imports
Matt Mackall <mpm@selenic.com>
parents:
7633
diff
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|
935 if node == revlog.nullid: |
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Martin von Zweigbergk <martinvonz@google.com>
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|
936 return self._newmanifest() # don't upset local cache |
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a1141f04e368
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Siddharth Agarwal <sid0@fb.com>
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|
937 if node in self._mancache: |
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Siddharth Agarwal <sid0@fb.com>
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|
938 return self._mancache[node][0] |
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Martin von Zweigbergk <martinvonz@google.com>
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|
939 if self._treeondisk: |
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treemanifest: lazily load manifests
Martin von Zweigbergk <martinvonz@google.com>
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|
940 def gettext(): |
0de132d5328a
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Martin von Zweigbergk <martinvonz@google.com>
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|
941 return self.revision(node) |
25091
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diff
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|
942 def readsubtree(dir, subm): |
25185
bf6b476f3b36
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Martin von Zweigbergk <martinvonz@google.com>
parents:
25151
diff
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|
943 return self.dirlog(dir).read(subm) |
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Martin von Zweigbergk <martinvonz@google.com>
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|
944 m = self._newmanifest() |
25222
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Martin von Zweigbergk <martinvonz@google.com>
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diff
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|
945 m.read(gettext, readsubtree) |
25091
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Martin von Zweigbergk <martinvonz@google.com>
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|
946 m.setnode(node) |
b5052fc73300
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Martin von Zweigbergk <martinvonz@google.com>
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|
947 arraytext = None |
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|
948 else: |
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|
949 text = self.revision(node) |
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|
950 m = self._newmanifest(text) |
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|
951 arraytext = array.array('c', text) |
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Martin von Zweigbergk <martinvonz@google.com>
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|
952 self._mancache[node] = (m, arraytext) |
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|
953 return m |
0
9117c6561b0b
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diff
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|
954 |
2320
dbdce3b99988
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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diff
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|
955 def find(self, node, f): |
dbdce3b99988
fix parsing of tags. make parse errors useful. add new tag tests.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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diff
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|
956 '''look up entry for a single file efficiently. |
4159
a896607d3ec3
fix manifest.find
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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diff
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|
957 return (node, flags) pair if found, (None, None) if not.''' |
24292
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Martin von Zweigbergk <martinvonz@google.com>
parents:
24277
diff
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|
958 m = self.read(node) |
24225
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Augie Fackler <augie@google.com>
parents:
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diff
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|
959 try: |
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|
960 return m.find(f) |
24225
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Augie Fackler <augie@google.com>
parents:
24224
diff
changeset
|
961 except KeyError: |
2320
dbdce3b99988
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2142
diff
changeset
|
962 return None, None |
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Vadim Gelfer <vadim.gelfer@gmail.com>
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diff
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|
963 |
24147
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Martin von Zweigbergk <martinvonz@google.com>
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diff
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|
964 def add(self, m, transaction, link, p1, p2, added, removed): |
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treemanifest: separate flags for trees in memory and trees on disk
Martin von Zweigbergk <martinvonz@google.com>
parents:
24700
diff
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|
965 if (p1 in self._mancache and not self._treeinmem |
24527
8aead3bc5ff8
manifestv2: disable fastdelta optimization
Martin von Zweigbergk <martinvonz@google.com>
parents:
24526
diff
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|
966 and not self._usemanifestv2): |
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Augie Fackler <raf@durin42.com>
parents:
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diff
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|
967 # If our first parent is in the manifest cache, we can |
160efd225b24
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Augie Fackler <raf@durin42.com>
parents:
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diff
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|
968 # compute a delta here using properties we know about the |
160efd225b24
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Augie Fackler <raf@durin42.com>
parents:
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diff
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|
969 # manifest up-front, which may save time later for the |
160efd225b24
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Augie Fackler <raf@durin42.com>
parents:
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diff
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|
970 # revlog layer. |
644 | 971 |
22415
65ec6c5c0fb3
manifest: mark addlistdelta and checkforbidden as module-private
Augie Fackler <raf@durin42.com>
parents:
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diff
changeset
|
972 _checkforbidden(added) |
644 | 973 # combine the changed lists into one list for sorting |
9415
e0cc9fa2a576
manifest.add(): cleanup worklist construction and iteration
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
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diff
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|
974 work = [(x, False) for x in added] |
e0cc9fa2a576
manifest.add(): cleanup worklist construction and iteration
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
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diff
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|
975 work.extend((x, True) for x in removed) |
17428
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Mads Kiilerich <mads@kiilerich.com>
parents:
17426
diff
changeset
|
976 # this could use heapq.merge() (from Python 2.6+) or equivalent |
9415
e0cc9fa2a576
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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diff
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|
977 # since the lists are already sorted |
644 | 978 work.sort() |
979 | |
24147
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Martin von Zweigbergk <martinvonz@google.com>
parents:
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diff
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|
980 arraytext, deltatext = m.fastdelta(self._mancache[p1][1], work) |
22931
48c0b101a9de
manifest: add fastdelta method to manifestdict
Augie Fackler <raf@durin42.com>
parents:
22930
diff
changeset
|
981 cachedelta = self.rev(p1), deltatext |
15657
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Matt Mackall <mpm@selenic.com>
parents:
14632
diff
changeset
|
982 text = util.buffer(arraytext) |
24780
4ea521b3c554
manifest: duplicate call to addrevision()
Martin von Zweigbergk <martinvonz@google.com>
parents:
24701
diff
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|
983 n = self.addrevision(text, transaction, link, p1, p2, cachedelta) |
22788
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Augie Fackler <raf@durin42.com>
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|
984 else: |
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Augie Fackler <raf@durin42.com>
parents:
22787
diff
changeset
|
985 # The first parent manifest isn't already loaded, so we'll |
160efd225b24
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Augie Fackler <raf@durin42.com>
parents:
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diff
changeset
|
986 # just encode a fulltext of the manifest and pass that |
160efd225b24
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Augie Fackler <raf@durin42.com>
parents:
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diff
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|
987 # through to the revlog layer, and let it handle the delta |
160efd225b24
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Augie Fackler <raf@durin42.com>
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diff
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|
988 # process. |
25091
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|
989 if self._treeondisk: |
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|
990 m1 = self.read(p1) |
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991 m2 = self.read(p2) |
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|
992 n = self._addtree(m, transaction, link, m1, m2) |
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|
993 arraytext = None |
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|
994 else: |
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|
995 text = m.text(self._usemanifestv2) |
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|
996 n = self.addrevision(text, transaction, link, p1, p2) |
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|
997 arraytext = array.array('c', text) |
1534 | 998 |
24147
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|
999 self._mancache[n] = (m, arraytext) |
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|
1000 |
9117c6561b0b
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diff
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|
1001 return n |
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|
1002 |
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|
1003 def _addtree(self, m, transaction, link, m1, m2): |
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parents:
25220
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|
1004 # If the manifest is unchanged compared to one parent, |
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diff
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|
1005 # don't write a new revision |
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|
1006 if m.unmodifiedsince(m1) or m.unmodifiedsince(m2): |
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|
1007 return m.node() |
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|
1008 def writesubtree(subm, subp1, subp2): |
25185
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|
1009 sublog = self.dirlog(subm.dir()) |
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1010 sublog.add(subm, transaction, link, subp1, subp2, None, None) |
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|
1011 m.writesubtrees(m1, m2, writesubtree) |
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1012 text = m.dirtext(self._usemanifestv2) |
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1013 # Double-check whether contents are unchanged to one parent |
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|
1014 if text == m1.dirtext(self._usemanifestv2): |
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1015 n = m1.node() |
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|
1016 elif text == m2.dirtext(self._usemanifestv2): |
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|
1017 n = m2.node() |
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|
1018 else: |
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|
1019 n = self.addrevision(text, transaction, link, m1.node(), m2.node()) |
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|
1020 # Save nodeid so parent manifest can calculate its nodeid |
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|
1021 m.setnode(n) |
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|
1022 return n |