Mercurial > hg
annotate mercurial/manifest.py @ 26293:3d24f31c6b8f
dirstate: state that getcwd() shouldn't be used to get real file path
hgweb will force it to be '' so that file patterns can be resolved relative
to the repository root. I want to clarify that is correct.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sun, 20 Sep 2015 20:08:22 +0900 |
parents | 5411059d93f8 |
children | 6f9d9e2a661f |
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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 |
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12 import heapq |
79 | 13 |
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14 propertycache = util.propertycache |
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15 |
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16 def _parsev1(data): |
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17 # This method does a little bit of excessive-looking |
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18 # precondition checking. This is so that the behavior of this |
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19 # class exactly matches its C counterpart to try and help |
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20 # prevent surprise breakage for anyone that develops against |
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21 # the pure version. |
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22 if data and data[-1] != '\n': |
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23 raise ValueError('Manifest did not end in a newline.') |
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24 prev = None |
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25 for l in data.splitlines(): |
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26 if prev is not None and prev > l: |
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27 raise ValueError('Manifest lines not in sorted order.') |
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28 prev = l |
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29 f, n = l.split('\0') |
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30 if len(n) > 40: |
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31 yield f, revlog.bin(n[:40]), n[40:] |
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32 else: |
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33 yield f, revlog.bin(n), '' |
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34 |
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35 def _parsev2(data): |
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36 metadataend = data.find('\n') |
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37 # Just ignore metadata for now |
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38 pos = metadataend + 1 |
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39 prevf = '' |
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40 while pos < len(data): |
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41 end = data.find('\n', pos + 1) # +1 to skip stem length byte |
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42 if end == -1: |
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43 raise ValueError('Manifest ended with incomplete file entry.') |
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44 stemlen = ord(data[pos]) |
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45 items = data[pos + 1:end].split('\0') |
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46 f = prevf[:stemlen] + items[0] |
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47 if prevf > f: |
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48 raise ValueError('Manifest entries not in sorted order.') |
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49 fl = items[1] |
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50 # Just ignore metadata (items[2:] for now) |
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51 n = data[end + 1:end + 21] |
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52 yield f, n, fl |
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53 pos = end + 22 |
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54 prevf = f |
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55 |
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56 def _parse(data): |
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57 """Generates (path, node, flags) tuples from a manifest text""" |
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58 if data.startswith('\0'): |
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59 return iter(_parsev2(data)) |
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60 else: |
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61 return iter(_parsev1(data)) |
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62 |
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63 def _text(it, usemanifestv2): |
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64 """Given an iterator over (path, node, flags) tuples, returns a manifest |
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65 text""" |
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66 if usemanifestv2: |
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67 return _textv2(it) |
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68 else: |
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69 return _textv1(it) |
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70 |
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71 def _textv1(it): |
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72 files = [] |
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73 lines = [] |
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74 _hex = revlog.hex |
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75 for f, n, fl in it: |
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76 files.append(f) |
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77 # if this is changed to support newlines in filenames, |
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78 # be sure to check the templates/ dir again (especially *-raw.tmpl) |
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79 lines.append("%s\0%s%s\n" % (f, _hex(n), fl)) |
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80 |
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81 _checkforbidden(files) |
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82 return ''.join(lines) |
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83 |
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84 def _textv2(it): |
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85 files = [] |
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86 lines = ['\0\n'] |
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87 prevf = '' |
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88 for f, n, fl in it: |
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89 files.append(f) |
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90 stem = os.path.commonprefix([prevf, f]) |
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91 stemlen = min(len(stem), 255) |
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92 lines.append("%c%s\0%s\n%s\n" % (stemlen, f[stemlen:], fl, n)) |
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93 prevf = f |
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94 _checkforbidden(files) |
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95 return ''.join(lines) |
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96 |
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97 class _lazymanifest(dict): |
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98 """This is the pure implementation of lazymanifest. |
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99 |
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100 It has not been optimized *at all* and is not lazy. |
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101 """ |
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102 |
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103 def __init__(self, data): |
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104 dict.__init__(self) |
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105 for f, n, fl in _parse(data): |
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106 self[f] = n, fl |
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107 |
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108 def __setitem__(self, k, v): |
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109 node, flag = v |
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110 assert node is not None |
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111 if len(node) > 21: |
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112 node = node[:21] # match c implementation behavior |
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113 dict.__setitem__(self, k, (node, flag)) |
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114 |
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115 def __iter__(self): |
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116 return iter(sorted(dict.keys(self))) |
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117 |
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118 def iterkeys(self): |
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119 return iter(sorted(dict.keys(self))) |
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120 |
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121 def iterentries(self): |
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122 return ((f, e[0], e[1]) for f, e in sorted(self.iteritems())) |
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123 |
2831 | 124 def copy(self): |
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125 c = _lazymanifest('') |
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126 c.update(self) |
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127 return c |
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128 |
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129 def diff(self, m2, clean=False): |
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130 '''Finds changes between the current manifest and m2.''' |
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131 diff = {} |
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132 |
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133 for fn, e1 in self.iteritems(): |
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134 if fn not in m2: |
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135 diff[fn] = e1, (None, '') |
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136 else: |
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137 e2 = m2[fn] |
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138 if e1 != e2: |
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139 diff[fn] = e1, e2 |
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140 elif clean: |
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141 diff[fn] = None |
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142 |
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143 for fn, e2 in m2.iteritems(): |
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144 if fn not in self: |
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145 diff[fn] = (None, ''), e2 |
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146 |
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147 return diff |
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148 |
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149 def filtercopy(self, filterfn): |
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150 c = _lazymanifest('') |
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151 for f, n, fl in self.iterentries(): |
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152 if filterfn(f): |
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153 c[f] = n, fl |
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154 return c |
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155 |
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156 def text(self): |
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157 """Get the full data of this manifest as a bytestring.""" |
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158 return _textv1(self.iterentries()) |
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159 |
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160 try: |
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161 _lazymanifest = parsers.lazymanifest |
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162 except AttributeError: |
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163 pass |
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164 |
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165 class manifestdict(object): |
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166 def __init__(self, data=''): |
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167 if data.startswith('\0'): |
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168 #_lazymanifest can not parse v2 |
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169 self._lm = _lazymanifest('') |
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170 for f, n, fl in _parsev2(data): |
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171 self._lm[f] = n, fl |
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172 else: |
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173 self._lm = _lazymanifest(data) |
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174 |
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175 def __getitem__(self, key): |
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176 return self._lm[key][0] |
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177 |
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178 def find(self, key): |
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179 return self._lm[key] |
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180 |
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181 def __len__(self): |
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182 return len(self._lm) |
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183 |
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184 def __setitem__(self, key, node): |
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185 self._lm[key] = node, self.flags(key, '') |
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186 |
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187 def __contains__(self, key): |
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188 return key in self._lm |
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189 |
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190 def __delitem__(self, key): |
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191 del self._lm[key] |
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192 |
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193 def __iter__(self): |
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194 return self._lm.__iter__() |
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195 |
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196 def iterkeys(self): |
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197 return self._lm.iterkeys() |
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198 |
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199 def keys(self): |
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200 return list(self.iterkeys()) |
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201 |
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202 def filesnotin(self, m2): |
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203 '''Set of files in this manifest that are not in the other''' |
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204 files = set(self) |
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205 files.difference_update(m2) |
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206 return files |
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207 |
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208 @propertycache |
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209 def _dirs(self): |
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210 return util.dirs(self) |
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211 |
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212 def dirs(self): |
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213 return self._dirs |
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214 |
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215 def hasdir(self, dir): |
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216 return dir in self._dirs |
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217 |
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218 def _filesfastpath(self, match): |
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219 '''Checks whether we can correctly and quickly iterate over matcher |
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220 files instead of over manifest files.''' |
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221 files = match.files() |
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222 return (len(files) < 100 and (match.isexact() or |
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223 (match.prefix() and all(fn in self for fn in files)))) |
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224 |
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225 def walk(self, match): |
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226 '''Generates matching file names. |
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227 |
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228 Equivalent to manifest.matches(match).iterkeys(), but without creating |
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229 an entirely new manifest. |
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230 |
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231 It also reports nonexistent files by marking them bad with match.bad(). |
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232 ''' |
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233 if match.always(): |
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234 for f in iter(self): |
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235 yield f |
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236 return |
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237 |
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238 fset = set(match.files()) |
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239 |
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240 # avoid the entire walk if we're only looking for specific files |
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241 if self._filesfastpath(match): |
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242 for fn in sorted(fset): |
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243 yield fn |
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244 return |
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245 |
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246 for fn in self: |
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247 if fn in fset: |
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248 # specified pattern is the exact name |
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249 fset.remove(fn) |
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250 if match(fn): |
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251 yield fn |
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252 |
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253 # for dirstate.walk, files=['.'] means "walk the whole tree". |
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254 # follow that here, too |
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255 fset.discard('.') |
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256 |
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257 for fn in sorted(fset): |
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258 if not self.hasdir(fn): |
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259 match.bad(fn, None) |
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260 |
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261 def matches(self, match): |
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262 '''generate a new manifest filtered by the match argument''' |
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263 if match.always(): |
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264 return self.copy() |
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265 |
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266 if self._filesfastpath(match): |
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267 m = manifestdict() |
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268 lm = self._lm |
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269 for fn in match.files(): |
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270 if fn in lm: |
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271 m._lm[fn] = lm[fn] |
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272 return m |
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273 |
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274 m = manifestdict() |
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275 m._lm = self._lm.filtercopy(match) |
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276 return m |
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277 |
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278 def diff(self, m2, clean=False): |
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279 '''Finds changes between the current manifest and m2. |
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280 |
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281 Args: |
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282 m2: the manifest to which this manifest should be compared. |
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283 clean: if true, include files unchanged between these manifests |
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284 with a None value in the returned dictionary. |
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285 |
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286 The result is returned as a dict with filename as key and |
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287 values of the form ((n1,fl1),(n2,fl2)), where n1/n2 is the |
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288 nodeid in the current/other manifest and fl1/fl2 is the flag |
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289 in the current/other manifest. Where the file does not exist, |
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290 the nodeid will be None and the flags will be the empty |
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291 string. |
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292 ''' |
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293 return self._lm.diff(m2._lm, clean) |
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294 |
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295 def setflag(self, key, flag): |
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296 self._lm[key] = self[key], flag |
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297 |
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298 def get(self, key, default=None): |
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299 try: |
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300 return self._lm[key][0] |
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301 except KeyError: |
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302 return default |
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303 |
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304 def flags(self, key, default=''): |
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305 try: |
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306 return self._lm[key][1] |
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307 except KeyError: |
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308 return default |
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309 |
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310 def copy(self): |
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311 c = manifestdict() |
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312 c._lm = self._lm.copy() |
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313 return c |
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314 |
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315 def iteritems(self): |
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316 return (x[:2] for x in self._lm.iterentries()) |
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318 def text(self, usemanifestv2=False): |
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319 if usemanifestv2: |
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320 return _textv2(self._lm.iterentries()) |
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321 else: |
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322 # use (probably) native version for v1 |
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323 return self._lm.text() |
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324 |
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325 def fastdelta(self, base, changes): |
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326 """Given a base manifest text as an array.array and a list of changes |
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327 relative to that text, compute a delta that can be used by revlog. |
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328 """ |
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329 delta = [] |
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330 dstart = None |
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331 dend = None |
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332 dline = [""] |
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333 start = 0 |
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334 # zero copy representation of base as a buffer |
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335 addbuf = util.buffer(base) |
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336 |
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337 # start with a readonly loop that finds the offset of |
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338 # each line and creates the deltas |
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339 for f, todelete in changes: |
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340 # bs will either be the index of the item or the insert point |
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341 start, end = _msearch(addbuf, f, start) |
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342 if not todelete: |
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343 h, fl = self._lm[f] |
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344 l = "%s\0%s%s\n" % (f, revlog.hex(h), fl) |
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345 else: |
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346 if start == end: |
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347 # item we want to delete was not found, error out |
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348 raise AssertionError( |
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349 _("failed to remove %s from manifest") % f) |
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350 l = "" |
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351 if dstart is not None and dstart <= start and dend >= start: |
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352 if dend < end: |
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353 dend = end |
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354 if l: |
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355 dline.append(l) |
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356 else: |
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357 if dstart is not None: |
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358 delta.append([dstart, dend, "".join(dline)]) |
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359 dstart = start |
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360 dend = end |
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361 dline = [l] |
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362 |
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363 if dstart is not None: |
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364 delta.append([dstart, dend, "".join(dline)]) |
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365 # apply the delta to the base, and get a delta for addrevision |
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366 deltatext, arraytext = _addlistdelta(base, delta) |
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367 return arraytext, deltatext |
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368 |
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369 def _msearch(m, s, lo=0, hi=None): |
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370 '''return a tuple (start, end) that says where to find s within m. |
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371 |
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372 If the string is found m[start:end] are the line containing |
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373 that string. If start == end the string was not found and |
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374 they indicate the proper sorted insertion point. |
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375 |
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376 m should be a buffer or a string |
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377 s is a string''' |
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378 def advance(i, c): |
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379 while i < lenm and m[i] != c: |
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380 i += 1 |
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381 return i |
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382 if not s: |
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383 return (lo, lo) |
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384 lenm = len(m) |
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385 if not hi: |
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386 hi = lenm |
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387 while lo < hi: |
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388 mid = (lo + hi) // 2 |
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389 start = mid |
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390 while start > 0 and m[start - 1] != '\n': |
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391 start -= 1 |
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392 end = advance(start, '\0') |
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393 if m[start:end] < s: |
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394 # we know that after the null there are 40 bytes of sha1 |
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395 # this translates to the bisect lo = mid + 1 |
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396 lo = advance(end + 40, '\n') + 1 |
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397 else: |
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398 # this translates to the bisect hi = mid |
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399 hi = start |
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400 end = advance(lo, '\0') |
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401 found = m[lo:end] |
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402 if s == found: |
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403 # we know that after the null there are 40 bytes of sha1 |
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404 end = advance(end + 40, '\n') |
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405 return (lo, end + 1) |
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406 else: |
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407 return (lo, lo) |
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408 |
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409 def _checkforbidden(l): |
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410 """Check filenames for illegal characters.""" |
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411 for f in l: |
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412 if '\n' in f or '\r' in f: |
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413 raise error.RevlogError( |
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414 _("'\\n' and '\\r' disallowed in filenames: %r") % f) |
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415 |
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416 |
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417 # apply the changes collected during the bisect loop to our addlist |
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418 # return a delta suitable for addrevision |
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419 def _addlistdelta(addlist, x): |
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420 # for large addlist arrays, building a new array is cheaper |
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421 # than repeatedly modifying the existing one |
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422 currentposition = 0 |
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423 newaddlist = array.array('c') |
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424 |
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425 for start, end, content in x: |
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426 newaddlist += addlist[currentposition:start] |
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427 if content: |
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428 newaddlist += array.array('c', content) |
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429 |
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430 currentposition = end |
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431 |
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432 newaddlist += addlist[currentposition:] |
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433 |
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434 deltatext = "".join(struct.pack(">lll", start, end, len(content)) |
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435 + content for start, end, content in x) |
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436 return deltatext, newaddlist |
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437 |
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438 def _splittopdir(f): |
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439 if '/' in f: |
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440 dir, subpath = f.split('/', 1) |
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441 return dir + '/', subpath |
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442 else: |
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443 return '', f |
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444 |
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445 _noop = lambda: None |
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446 |
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447 class treemanifest(object): |
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448 def __init__(self, dir='', text=''): |
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449 self._dir = dir |
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450 self._node = revlog.nullid |
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451 self._load = _noop |
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452 self._dirty = False |
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453 self._dirs = {} |
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454 # Using _lazymanifest here is a little slower than plain old dicts |
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455 self._files = {} |
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456 self._flags = {} |
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457 if text: |
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458 def readsubtree(subdir, subm): |
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459 raise AssertionError('treemanifest constructor only accepts ' |
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460 'flat manifests') |
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461 self.parse(text, readsubtree) |
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462 self._dirty = True # Mark flat manifest dirty after parsing |
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463 |
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464 def _subpath(self, path): |
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465 return self._dir + path |
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466 |
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467 def __len__(self): |
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468 self._load() |
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469 size = len(self._files) |
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470 for m in self._dirs.values(): |
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471 size += m.__len__() |
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472 return size |
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473 |
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474 def _isempty(self): |
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475 self._load() # for consistency; already loaded by all callers |
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476 return (not self._files and (not self._dirs or |
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477 all(m._isempty() for m in self._dirs.values()))) |
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478 |
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479 def __str__(self): |
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480 return ('<treemanifest dir=%s, node=%s, loaded=%s, dirty=%s>' % |
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481 (self._dir, revlog.hex(self._node), |
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482 bool(self._load is _noop), |
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483 self._dirty)) |
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484 |
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485 def dir(self): |
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486 '''The directory that this tree manifest represents, including a |
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487 trailing '/'. Empty string for the repo root directory.''' |
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488 return self._dir |
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489 |
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490 def node(self): |
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491 '''This node of this instance. nullid for unsaved instances. Should |
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492 be updated when the instance is read or written from a revlog. |
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493 ''' |
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494 assert not self._dirty |
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495 return self._node |
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496 |
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497 def setnode(self, node): |
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498 self._node = node |
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499 self._dirty = False |
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500 |
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501 def iteritems(self): |
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502 self._load() |
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503 for p, n in sorted(self._dirs.items() + self._files.items()): |
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504 if p in self._files: |
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505 yield self._subpath(p), n |
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506 else: |
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507 for f, sn in n.iteritems(): |
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508 yield f, sn |
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509 |
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510 def iterkeys(self): |
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511 self._load() |
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512 for p in sorted(self._dirs.keys() + self._files.keys()): |
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513 if p in self._files: |
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514 yield self._subpath(p) |
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515 else: |
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516 for f in self._dirs[p].iterkeys(): |
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517 yield f |
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518 |
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519 def keys(self): |
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520 return list(self.iterkeys()) |
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521 |
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522 def __iter__(self): |
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523 return self.iterkeys() |
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|
524 |
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525 def __contains__(self, f): |
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526 if f is None: |
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527 return False |
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528 self._load() |
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529 dir, subpath = _splittopdir(f) |
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530 if dir: |
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531 if dir not in self._dirs: |
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532 return False |
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533 return self._dirs[dir].__contains__(subpath) |
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534 else: |
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535 return f in self._files |
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536 |
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537 def get(self, f, default=None): |
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538 self._load() |
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539 dir, subpath = _splittopdir(f) |
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540 if dir: |
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541 if dir not in self._dirs: |
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542 return default |
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543 return self._dirs[dir].get(subpath, default) |
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544 else: |
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545 return self._files.get(f, default) |
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|
546 |
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|
547 def __getitem__(self, f): |
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|
548 self._load() |
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549 dir, subpath = _splittopdir(f) |
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550 if dir: |
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551 return self._dirs[dir].__getitem__(subpath) |
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552 else: |
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553 return self._files[f] |
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|
554 |
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|
555 def flags(self, f): |
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556 self._load() |
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557 dir, subpath = _splittopdir(f) |
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558 if dir: |
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|
559 if dir not in self._dirs: |
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|
560 return '' |
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561 return self._dirs[dir].flags(subpath) |
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562 else: |
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563 if f in self._dirs: |
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564 return '' |
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|
565 return self._flags.get(f, '') |
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|
566 |
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|
567 def find(self, f): |
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568 self._load() |
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|
569 dir, subpath = _splittopdir(f) |
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570 if dir: |
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571 return self._dirs[dir].find(subpath) |
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572 else: |
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573 return self._files[f], self._flags.get(f, '') |
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|
574 |
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575 def __delitem__(self, f): |
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576 self._load() |
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577 dir, subpath = _splittopdir(f) |
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578 if dir: |
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|
579 self._dirs[dir].__delitem__(subpath) |
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580 # If the directory is now empty, remove it |
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|
581 if self._dirs[dir]._isempty(): |
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582 del self._dirs[dir] |
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583 else: |
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584 del self._files[f] |
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585 if f in self._flags: |
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586 del self._flags[f] |
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587 self._dirty = True |
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|
588 |
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|
589 def __setitem__(self, f, n): |
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590 assert n is not None |
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591 self._load() |
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592 dir, subpath = _splittopdir(f) |
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593 if dir: |
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594 if dir not in self._dirs: |
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595 self._dirs[dir] = treemanifest(self._subpath(dir)) |
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596 self._dirs[dir].__setitem__(subpath, n) |
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597 else: |
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598 self._files[f] = n[:21] # to match manifestdict's behavior |
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599 self._dirty = True |
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600 |
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601 def setflag(self, f, flags): |
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602 """Set the flags (symlink, executable) for path f.""" |
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603 assert 'd' not in flags |
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604 self._load() |
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605 dir, subpath = _splittopdir(f) |
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606 if dir: |
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607 if dir not in self._dirs: |
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608 self._dirs[dir] = treemanifest(self._subpath(dir)) |
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609 self._dirs[dir].setflag(subpath, flags) |
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610 else: |
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611 self._flags[f] = flags |
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612 self._dirty = True |
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613 |
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614 def copy(self): |
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615 copy = treemanifest(self._dir) |
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616 copy._node = self._node |
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617 copy._dirty = self._dirty |
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618 def _load(): |
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619 self._load() |
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620 for d in self._dirs: |
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621 copy._dirs[d] = self._dirs[d].copy() |
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622 copy._files = dict.copy(self._files) |
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623 copy._flags = dict.copy(self._flags) |
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624 copy._load = _noop |
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625 copy._load = _load |
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626 if self._load == _noop: |
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627 # Chaining _load if it's _noop is functionally correct, but the |
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628 # chain may end up excessively long (stack overflow), and |
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629 # will prevent garbage collection of 'self'. |
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630 copy._load() |
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631 return copy |
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632 |
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633 def filesnotin(self, m2): |
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634 '''Set of files in this manifest that are not in the other''' |
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635 files = set() |
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636 def _filesnotin(t1, t2): |
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637 if t1._node == t2._node and not t1._dirty and not t2._dirty: |
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|
638 return |
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639 t1._load() |
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640 t2._load() |
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641 for d, m1 in t1._dirs.iteritems(): |
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642 if d in t2._dirs: |
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643 m2 = t2._dirs[d] |
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644 _filesnotin(m1, m2) |
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645 else: |
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646 files.update(m1.iterkeys()) |
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647 |
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648 for fn in t1._files.iterkeys(): |
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|
649 if fn not in t2._files: |
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650 files.add(t1._subpath(fn)) |
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651 |
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652 _filesnotin(self, m2) |
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653 return files |
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|
654 |
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|
655 @propertycache |
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|
656 def _alldirs(self): |
24635
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657 return util.dirs(self) |
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658 |
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659 def dirs(self): |
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660 return self._alldirs |
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661 |
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|
662 def hasdir(self, dir): |
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663 self._load() |
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664 topdir, subdir = _splittopdir(dir) |
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665 if topdir: |
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666 if topdir in self._dirs: |
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667 return self._dirs[topdir].hasdir(subdir) |
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668 return False |
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669 return (dir + '/') in self._dirs |
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670 |
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671 def walk(self, match): |
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672 '''Generates matching file names. |
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673 |
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674 Equivalent to manifest.matches(match).iterkeys(), but without creating |
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675 an entirely new manifest. |
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676 |
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677 It also reports nonexistent files by marking them bad with match.bad(). |
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678 ''' |
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679 if match.always(): |
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680 for f in iter(self): |
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681 yield f |
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682 return |
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|
683 |
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684 fset = set(match.files()) |
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685 |
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|
686 for fn in self._walk(match): |
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687 if fn in fset: |
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688 # specified pattern is the exact name |
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689 fset.remove(fn) |
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690 yield fn |
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|
691 |
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692 # for dirstate.walk, files=['.'] means "walk the whole tree". |
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693 # follow that here, too |
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694 fset.discard('.') |
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695 |
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|
696 for fn in sorted(fset): |
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697 if not self.hasdir(fn): |
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698 match.bad(fn, None) |
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|
699 |
25188
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|
700 def _walk(self, match): |
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701 '''Recursively generates matching file names for walk().''' |
2773540c3650
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702 if not match.visitdir(self._dir[:-1] or '.'): |
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703 return |
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|
704 |
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changeset
|
705 # yield this dir's files and walk its submanifests |
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706 self._load() |
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changeset
|
707 for p in sorted(self._dirs.keys() + self._files.keys()): |
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708 if p in self._files: |
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709 fullp = self._subpath(p) |
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710 if match(fullp): |
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|
711 yield fullp |
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712 else: |
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713 for f in self._dirs[p]._walk(match): |
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714 yield f |
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|
715 |
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716 def matches(self, match): |
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717 '''generate a new manifest filtered by the match argument''' |
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718 if match.always(): |
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719 return self.copy() |
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720 |
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721 return self._matches(match) |
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722 |
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723 def _matches(self, match): |
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724 '''recursively generate a new manifest filtered by the match argument. |
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725 ''' |
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726 ret = treemanifest(self._dir) |
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727 |
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728 if not match.visitdir(self._dir[:-1] or '.'): |
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729 return ret |
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|
730 |
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|
731 self._load() |
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732 for fn in self._files: |
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733 fullp = self._subpath(fn) |
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734 if not match(fullp): |
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735 continue |
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736 ret._files[fn] = self._files[fn] |
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737 if fn in self._flags: |
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738 ret._flags[fn] = self._flags[fn] |
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|
739 |
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740 for dir, subm in self._dirs.iteritems(): |
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741 m = subm._matches(match) |
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742 if not m._isempty(): |
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743 ret._dirs[dir] = m |
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744 |
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745 if not ret._isempty(): |
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746 ret._dirty = True |
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747 return ret |
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748 |
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749 def diff(self, m2, clean=False): |
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750 '''Finds changes between the current manifest and m2. |
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751 |
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|
752 Args: |
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753 m2: the manifest to which this manifest should be compared. |
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754 clean: if true, include files unchanged between these manifests |
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755 with a None value in the returned dictionary. |
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|
756 |
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757 The result is returned as a dict with filename as key and |
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758 values of the form ((n1,fl1),(n2,fl2)), where n1/n2 is the |
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759 nodeid in the current/other manifest and fl1/fl2 is the flag |
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760 in the current/other manifest. Where the file does not exist, |
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|
761 the nodeid will be None and the flags will be the empty |
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|
762 string. |
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|
763 ''' |
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|
764 result = {} |
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|
765 emptytree = treemanifest() |
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|
766 def _diff(t1, t2): |
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767 if t1._node == t2._node and not t1._dirty and not t2._dirty: |
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|
768 return |
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|
769 t1._load() |
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|
770 t2._load() |
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771 for d, m1 in t1._dirs.iteritems(): |
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772 m2 = t2._dirs.get(d, emptytree) |
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|
773 _diff(m1, m2) |
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|
774 |
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|
775 for d, m2 in t2._dirs.iteritems(): |
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|
776 if d not in t1._dirs: |
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|
777 _diff(emptytree, m2) |
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|
778 |
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|
779 for fn, n1 in t1._files.iteritems(): |
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|
780 fl1 = t1._flags.get(fn, '') |
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781 n2 = t2._files.get(fn, None) |
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782 fl2 = t2._flags.get(fn, '') |
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|
783 if n1 != n2 or fl1 != fl2: |
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|
784 result[t1._subpath(fn)] = ((n1, fl1), (n2, fl2)) |
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785 elif clean: |
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|
786 result[t1._subpath(fn)] = None |
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|
787 |
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|
788 for fn, n2 in t2._files.iteritems(): |
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|
789 if fn not in t1._files: |
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790 fl2 = t2._flags.get(fn, '') |
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791 result[t2._subpath(fn)] = ((None, ''), (n2, fl2)) |
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|
792 |
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|
793 _diff(self, m2) |
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|
794 return result |
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|
795 |
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|
796 def unmodifiedsince(self, m2): |
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797 return not self._dirty and not m2._dirty and self._node == m2._node |
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|
798 |
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|
799 def parse(self, text, readsubtree): |
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|
800 for f, n, fl in _parse(text): |
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|
801 if fl == 'd': |
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|
802 f = f + '/' |
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|
803 self._dirs[f] = readsubtree(self._subpath(f), n) |
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804 elif '/' in f: |
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|
805 # This is a flat manifest, so use __setitem__ and setflag rather |
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|
806 # than assigning directly to _files and _flags, so we can |
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|
807 # assign a path in a subdirectory, and to mark dirty (compared |
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|
808 # to nullid). |
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|
809 self[f] = n |
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|
810 if fl: |
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|
811 self.setflag(f, fl) |
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812 else: |
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|
813 # Assigning to _files and _flags avoids marking as dirty, |
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814 # and should be a little faster. |
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815 self._files[f] = n |
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816 if fl: |
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|
817 self._flags[f] = fl |
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|
818 |
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|
819 def text(self, usemanifestv2=False): |
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820 """Get the full data of this manifest as a bytestring.""" |
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|
821 self._load() |
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822 flags = self.flags |
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823 return _text(((f, self[f], flags(f)) for f in self.keys()), |
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|
824 usemanifestv2) |
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825 |
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|
826 def dirtext(self, usemanifestv2=False): |
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827 """Get the full data of this directory as a bytestring. Make sure that |
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828 any submanifests have been written first, so their nodeids are correct. |
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829 """ |
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830 self._load() |
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831 flags = self.flags |
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832 dirs = [(d[:-1], self._dirs[d]._node, 'd') for d in self._dirs] |
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833 files = [(f, self._files[f], flags(f)) for f in self._files] |
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834 return _text(sorted(dirs + files), usemanifestv2) |
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|
835 |
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836 def read(self, gettext, readsubtree): |
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|
837 def _load(): |
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838 # Mark as loaded already here, so __setitem__ and setflag() don't |
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839 # cause infinite loops when they try to load. |
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840 self._load = _noop |
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841 self.parse(gettext(), readsubtree) |
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|
842 self._dirty = False |
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|
843 self._load = _load |
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844 |
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845 def writesubtrees(self, m1, m2, writesubtree): |
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846 self._load() # for consistency; should never have any effect here |
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847 emptytree = treemanifest() |
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848 for d, subm in self._dirs.iteritems(): |
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849 subp1 = m1._dirs.get(d, emptytree)._node |
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850 subp2 = m2._dirs.get(d, emptytree)._node |
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851 if subp1 == revlog.nullid: |
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852 subp1, subp2 = subp2, subp1 |
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853 writesubtree(subm, subp1, subp2) |
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|
854 |
7634
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|
855 class manifest(revlog.revlog): |
25185
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856 def __init__(self, opener, dir='', dirlogcache=None): |
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857 '''The 'dir' and 'dirlogcache' arguments are for internal use by |
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858 manifest.manifest only. External users should create a root manifest |
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859 log with manifest.manifest(opener) and call dirlog() on it. |
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860 ''' |
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861 # During normal operations, we expect to deal with not more than four |
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862 # revs at a time (such as during commit --amend). When rebasing large |
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863 # stacks of commits, the number can go up, hence the config knob below. |
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864 cachesize = 4 |
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865 usetreemanifest = False |
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866 usemanifestv2 = False |
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867 opts = getattr(opener, 'options', None) |
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868 if opts is not None: |
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869 cachesize = opts.get('manifestcachesize', cachesize) |
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870 usetreemanifest = opts.get('treemanifest', usetreemanifest) |
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871 usemanifestv2 = opts.get('manifestv2', usemanifestv2) |
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872 self._mancache = util.lrucachedict(cachesize) |
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873 self._treeinmem = usetreemanifest |
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874 self._treeondisk = usetreemanifest |
24526
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875 self._usemanifestv2 = usemanifestv2 |
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876 indexfile = "00manifest.i" |
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877 if dir: |
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|
878 assert self._treeondisk |
25119
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|
879 if not dir.endswith('/'): |
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880 dir = dir + '/' |
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881 indexfile = "meta/" + dir + "00manifest.i" |
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|
882 revlog.revlog.__init__(self, opener, indexfile) |
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883 self._dir = dir |
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884 # The dirlogcache is kept on the root manifest log |
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885 if dir: |
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|
886 self._dirlogcache = dirlogcache |
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|
887 else: |
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|
888 self._dirlogcache = {'': self} |
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889 |
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|
890 def _newmanifest(self, data=''): |
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891 if self._treeinmem: |
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|
892 return treemanifest(self._dir, data) |
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893 return manifestdict(data) |
0
9117c6561b0b
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|
894 |
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|
895 def dirlog(self, dir): |
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896 assert self._treeondisk |
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|
897 if dir not in self._dirlogcache: |
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898 self._dirlogcache[dir] = manifest(self.opener, dir, |
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|
899 self._dirlogcache) |
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|
900 return self._dirlogcache[dir] |
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|
901 |
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|
902 def _slowreaddelta(self, node): |
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|
903 r0 = self.deltaparent(self.rev(node)) |
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|
904 m0 = self.read(self.node(r0)) |
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|
905 m1 = self.read(node) |
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|
906 md = self._newmanifest() |
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|
907 for f, ((n0, fl0), (n1, fl1)) in m0.diff(m1).iteritems(): |
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|
908 if n1: |
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|
909 md[f] = n1 |
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|
910 if fl1: |
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|
911 md.setflag(f, fl1) |
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|
912 return md |
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|
913 |
3196
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|
914 def readdelta(self, node): |
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915 if self._usemanifestv2 or self._treeondisk: |
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916 return self._slowreaddelta(node) |
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|
917 r = self.rev(node) |
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|
918 d = mdiff.patchtext(self.revdiff(self.deltaparent(r), r)) |
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919 return self._newmanifest(d) |
3223
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|
920 |
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921 def readfast(self, node): |
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922 '''use the faster of readdelta or read |
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923 |
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924 This will return a manifest which is either only the files |
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925 added/modified relative to p1, or all files in the |
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926 manifest. Which one is returned depends on the codepath used |
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|
927 to retrieve the data. |
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|
928 ''' |
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|
929 r = self.rev(node) |
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|
930 deltaparent = self.deltaparent(r) |
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|
931 if deltaparent != revlog.nullrev and deltaparent in self.parentrevs(r): |
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932 return self.readdelta(node) |
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933 return self.read(node) |
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934 |
0
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935 def read(self, node): |
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936 if node == revlog.nullid: |
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937 return self._newmanifest() # don't upset local cache |
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938 if node in self._mancache: |
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939 return self._mancache[node][0] |
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940 if self._treeondisk: |
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941 def gettext(): |
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942 return self.revision(node) |
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943 def readsubtree(dir, subm): |
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944 return self.dirlog(dir).read(subm) |
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945 m = self._newmanifest() |
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946 m.read(gettext, readsubtree) |
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947 m.setnode(node) |
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948 arraytext = None |
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949 else: |
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950 text = self.revision(node) |
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951 m = self._newmanifest(text) |
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952 arraytext = array.array('c', text) |
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953 self._mancache[node] = (m, arraytext) |
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954 return m |
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955 |
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956 def find(self, node, f): |
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957 '''look up entry for a single file efficiently. |
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958 return (node, flags) pair if found, (None, None) if not.''' |
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959 m = self.read(node) |
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960 try: |
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961 return m.find(f) |
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962 except KeyError: |
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963 return None, None |
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964 |
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965 def add(self, m, transaction, link, p1, p2, added, removed): |
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966 if (p1 in self._mancache and not self._treeinmem |
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967 and not self._usemanifestv2): |
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968 # If our first parent is in the manifest cache, we can |
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969 # compute a delta here using properties we know about the |
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970 # manifest up-front, which may save time later for the |
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971 # revlog layer. |
644 | 972 |
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973 _checkforbidden(added) |
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974 # combine the changed lists into one sorted iterator |
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975 work = heapq.merge([(x, False) for x in added], |
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976 [(x, True) for x in removed]) |
644 | 977 |
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978 arraytext, deltatext = m.fastdelta(self._mancache[p1][1], work) |
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979 cachedelta = self.rev(p1), deltatext |
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980 text = util.buffer(arraytext) |
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981 n = self.addrevision(text, transaction, link, p1, p2, cachedelta) |
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982 else: |
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983 # The first parent manifest isn't already loaded, so we'll |
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984 # just encode a fulltext of the manifest and pass that |
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985 # through to the revlog layer, and let it handle the delta |
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986 # process. |
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987 if self._treeondisk: |
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988 m1 = self.read(p1) |
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989 m2 = self.read(p2) |
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990 n = self._addtree(m, transaction, link, m1, m2) |
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991 arraytext = None |
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992 else: |
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993 text = m.text(self._usemanifestv2) |
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994 n = self.addrevision(text, transaction, link, p1, p2) |
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995 arraytext = array.array('c', text) |
1534 | 996 |
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997 self._mancache[n] = (m, arraytext) |
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998 |
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999 return n |
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1000 |
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1001 def _addtree(self, m, transaction, link, m1, m2): |
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1002 # If the manifest is unchanged compared to one parent, |
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1003 # don't write a new revision |
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1004 if m.unmodifiedsince(m1) or m.unmodifiedsince(m2): |
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1005 return m.node() |
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1006 def writesubtree(subm, subp1, subp2): |
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1007 sublog = self.dirlog(subm.dir()) |
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1008 sublog.add(subm, transaction, link, subp1, subp2, None, None) |
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1009 m.writesubtrees(m1, m2, writesubtree) |
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1010 text = m.dirtext(self._usemanifestv2) |
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1011 # Double-check whether contents are unchanged to one parent |
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1012 if text == m1.dirtext(self._usemanifestv2): |
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1013 n = m1.node() |
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1014 elif text == m2.dirtext(self._usemanifestv2): |
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1015 n = m2.node() |
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1016 else: |
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1017 n = self.addrevision(text, transaction, link, m1.node(), m2.node()) |
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1018 # Save nodeid so parent manifest can calculate its nodeid |
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1019 m.setnode(n) |
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1020 return n |