Mercurial > hg
annotate mercurial/manifest.py @ 26390:0f0cda81e9b0
gitweb: provide links to branches, tags and bookmarks by name
This is adapted from cd842821db2c, that was added to paper for 3.5 release.
It adds another way to refer to branches, tags and bookmarks in urls: by name.
It's still possible to navigate to a specific changeset hash, but now you can
get more descriptive urls straight from /summary page, for example.
branchentry template (and so the whole branches table on /summary and
/branches) lost the column that had a plain changeset hash, because tags and
bookmarks don't have this column and also because there is already a way to
address branch by its changeset hash (changeset link just next to it). Maybe we
can instead bring this column with a plain changeset hash to tags and
bookmarks, but this, more terse, new look feels fine.
author | Anton Shestakov <av6@dwimlabs.net> |
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date | Sat, 26 Sep 2015 17:15:58 +0800 |
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): |
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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().''' |
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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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|
705 # yield this dir's files and walk its submanifests |
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706 self._load() |
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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 |
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855 class manifest(revlog.revlog): |
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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 |
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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 |
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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) |
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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 |
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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) |
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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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manifest: add readfast method
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|
933 return self.read(node) |
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|
934 |
0
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Add back links from file revisions to changeset revisions
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|
935 def read(self, node): |
7634
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revlog: kill from-style imports
Matt Mackall <mpm@selenic.com>
parents:
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diff
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|
936 if node == revlog.nullid: |
24402
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treemanifest: add configuration for using treemanifest type
Martin von Zweigbergk <martinvonz@google.com>
parents:
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|
937 return self._newmanifest() # don't upset local cache |
18604
a1141f04e368
manifest: use a size 3 LRU cache to store parsed manifests
Siddharth Agarwal <sid0@fb.com>
parents:
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diff
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|
938 if node in self._mancache: |
a1141f04e368
manifest: use a size 3 LRU cache to store parsed manifests
Siddharth Agarwal <sid0@fb.com>
parents:
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|
939 return self._mancache[node][0] |
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|
940 if self._treeondisk: |
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treemanifest: lazily load manifests
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|
941 def gettext(): |
0de132d5328a
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|
942 return self.revision(node) |
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|
943 def readsubtree(dir, subm): |
25185
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|
944 return self.dirlog(dir).read(subm) |
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|
945 m = self._newmanifest() |
25222
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diff
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|
946 m.read(gettext, readsubtree) |
25091
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|
947 m.setnode(node) |
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|
948 arraytext = None |
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|
949 else: |
25222
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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 |
0
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|
955 |
2320
dbdce3b99988
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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diff
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|
956 def find(self, node, f): |
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Vadim Gelfer <vadim.gelfer@gmail.com>
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|
957 '''look up entry for a single file efficiently. |
4159
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fix manifest.find
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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|
958 return (node, flags) pair if found, (None, None) if not.''' |
24292
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|
959 m = self.read(node) |
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manifest: split manifestdict into high-level and low-level logic
Augie Fackler <augie@google.com>
parents:
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diff
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|
960 try: |
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|
961 return m.find(f) |
24225
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parents:
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diff
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|
962 except KeyError: |
2320
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|
963 return None, None |
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|
964 |
24147
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changeset
|
965 def add(self, m, transaction, link, p1, p2, added, removed): |
24701
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parents:
24700
diff
changeset
|
966 if (p1 in self._mancache and not self._treeinmem |
24527
8aead3bc5ff8
manifestv2: disable fastdelta optimization
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parents:
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diff
changeset
|
967 and not self._usemanifestv2): |
22788
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manifest: rearrange add() method and add comments for clarity
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parents:
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diff
changeset
|
968 # If our first parent is in the manifest cache, we can |
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manifest: rearrange add() method and add comments for clarity
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parents:
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diff
changeset
|
969 # compute a delta here using properties we know about the |
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parents:
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diff
changeset
|
970 # manifest up-front, which may save time later for the |
160efd225b24
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parents:
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diff
changeset
|
971 # revlog layer. |
644 | 972 |
22415
65ec6c5c0fb3
manifest: mark addlistdelta and checkforbidden as module-private
Augie Fackler <raf@durin42.com>
parents:
22409
diff
changeset
|
973 _checkforbidden(added) |
26199
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manifest: switch add() to heapq.merge (available in Py2.6+)
timeless@mozdev.org
parents:
25276
diff
changeset
|
974 # combine the changed lists into one sorted iterator |
5411059d93f8
manifest: switch add() to heapq.merge (available in Py2.6+)
timeless@mozdev.org
parents:
25276
diff
changeset
|
975 work = heapq.merge([(x, False) for x in added], |
5411059d93f8
manifest: switch add() to heapq.merge (available in Py2.6+)
timeless@mozdev.org
parents:
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diff
changeset
|
976 [(x, True) for x in removed]) |
644 | 977 |
24147
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parents:
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diff
changeset
|
978 arraytext, deltatext = m.fastdelta(self._mancache[p1][1], work) |
22931
48c0b101a9de
manifest: add fastdelta method to manifestdict
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parents:
22930
diff
changeset
|
979 cachedelta = self.rev(p1), deltatext |
15657
d976b1ef6760
util: don't mess with builtins to emulate buffer()
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parents:
14632
diff
changeset
|
980 text = util.buffer(arraytext) |
24780
4ea521b3c554
manifest: duplicate call to addrevision()
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parents:
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diff
changeset
|
981 n = self.addrevision(text, transaction, link, p1, p2, cachedelta) |
22788
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manifest: rearrange add() method and add comments for clarity
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parents:
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diff
changeset
|
982 else: |
160efd225b24
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Augie Fackler <raf@durin42.com>
parents:
22787
diff
changeset
|
983 # The first parent manifest isn't already loaded, so we'll |
160efd225b24
manifest: rearrange add() method and add comments for clarity
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parents:
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diff
changeset
|
984 # just encode a fulltext of the manifest and pass that |
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parents:
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diff
changeset
|
985 # through to the revlog layer, and let it handle the delta |
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parents:
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diff
changeset
|
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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diff
changeset
|
993 text = m.text(self._usemanifestv2) |
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diff
changeset
|
994 n = self.addrevision(text, transaction, link, p1, p2) |
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changeset
|
995 arraytext = array.array('c', text) |
1534 | 996 |
24147
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|
997 self._mancache[n] = (m, arraytext) |
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|
998 |
9117c6561b0b
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diff
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|
999 return n |
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diff
changeset
|
1000 |
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parents:
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diff
changeset
|
1001 def _addtree(self, m, transaction, link, m1, m2): |
25221
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parents:
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diff
changeset
|
1002 # If the manifest is unchanged compared to one parent, |
eafa06e9edde
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|
1003 # don't write a new revision |
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diff
changeset
|
1004 if m.unmodifiedsince(m1) or m.unmodifiedsince(m2): |
eafa06e9edde
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changeset
|
1005 return m.node() |
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|
1006 def writesubtree(subm, subp1, subp2): |
25185
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diff
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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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changeset
|
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 |
25091
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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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changeset
|
1017 n = self.addrevision(text, transaction, link, m1.node(), m2.node()) |
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parents:
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|
1018 # Save nodeid so parent manifest can calculate its nodeid |
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|
1019 m.setnode(n) |
b5052fc73300
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|
1020 return n |