Mercurial > hg
annotate mercurial/changelog.py @ 18038:f8aee8033ab2
graft: move commit info building
This moves the logic for generating the commit metadata ahead of the
merge operation. The only purposae of this patch is to make
subsequent patches easier to read, and there should be no behavior
changes.
author | David Schleimer <dschleimer@fb.com> |
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date | Tue, 04 Dec 2012 12:54:18 -0800 |
parents | 6f79c32c0bdf |
children | c0c943ef4e55 |
rev | line source |
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1095 | 1 # changelog.py - changelog 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 |
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8 from node import bin, hex, nullid |
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9 from i18n import _ |
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10 import util, error, revlog, encoding |
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11 |
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12 _defaultextra = {'branch': 'default'} |
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13 |
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14 def _string_escape(text): |
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15 """ |
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16 >>> d = {'nl': chr(10), 'bs': chr(92), 'cr': chr(13), 'nul': chr(0)} |
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17 >>> s = "ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d |
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18 >>> s |
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19 'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n' |
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20 >>> res = _string_escape(s) |
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21 >>> s == res.decode('string_escape') |
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22 True |
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23 """ |
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24 # subset of the string_escape codec |
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25 text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r') |
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26 return text.replace('\0', '\\0') |
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27 |
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28 def decodeextra(text): |
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29 """ |
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30 >>> decodeextra(encodeextra({'foo': 'bar', 'baz': chr(0) + '2'})) |
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31 {'foo': 'bar', 'baz': '\\x002', 'branch': 'default'} |
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32 >>> decodeextra(encodeextra({'foo': 'bar', 'baz': chr(92) + chr(0) + '2'})) |
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33 {'foo': 'bar', 'baz': '\\\\\\x002', 'branch': 'default'} |
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34 """ |
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35 extra = _defaultextra.copy() |
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36 for l in text.split('\0'): |
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37 if l: |
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38 if '\\0' in l: |
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39 # fix up \0 without getting into trouble with \\0 |
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40 l = l.replace('\\\\', '\\\\\n') |
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41 l = l.replace('\\0', '\0') |
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42 l = l.replace('\n', '') |
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43 k, v = l.decode('string_escape').split(':', 1) |
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44 extra[k] = v |
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45 return extra |
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46 |
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47 def encodeextra(d): |
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48 # keys must be sorted to produce a deterministic changelog entry |
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49 items = [_string_escape('%s:%s' % (k, d[k])) for k in sorted(d)] |
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50 return "\0".join(items) |
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51 |
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52 def stripdesc(desc): |
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53 """strip trailing whitespace and leading and trailing empty lines""" |
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54 return '\n'.join([l.rstrip() for l in desc.splitlines()]).strip('\n') |
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55 |
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56 class appender(object): |
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57 '''the changelog index must be updated last on disk, so we use this class |
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58 to delay writes to it''' |
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59 def __init__(self, fp, buf): |
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60 self.data = buf |
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61 self.fp = fp |
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62 self.offset = fp.tell() |
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63 self.size = util.fstat(fp).st_size |
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64 |
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65 def end(self): |
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66 return self.size + len("".join(self.data)) |
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67 def tell(self): |
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68 return self.offset |
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69 def flush(self): |
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70 pass |
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71 def close(self): |
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72 self.fp.close() |
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73 |
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74 def seek(self, offset, whence=0): |
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75 '''virtual file offset spans real file and data''' |
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76 if whence == 0: |
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77 self.offset = offset |
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78 elif whence == 1: |
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79 self.offset += offset |
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80 elif whence == 2: |
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81 self.offset = self.end() + offset |
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82 if self.offset < self.size: |
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83 self.fp.seek(self.offset) |
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84 |
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85 def read(self, count=-1): |
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86 '''only trick here is reads that span real file and data''' |
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87 ret = "" |
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88 if self.offset < self.size: |
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89 s = self.fp.read(count) |
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90 ret = s |
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91 self.offset += len(s) |
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92 if count > 0: |
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93 count -= len(s) |
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94 if count != 0: |
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95 doff = self.offset - self.size |
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96 self.data.insert(0, "".join(self.data)) |
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97 del self.data[1:] |
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98 s = self.data[0][doff:doff + count] |
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99 self.offset += len(s) |
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100 ret += s |
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101 return ret |
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102 |
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103 def write(self, s): |
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104 self.data.append(str(s)) |
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105 self.offset += len(s) |
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106 |
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107 def delayopener(opener, target, divert, buf): |
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108 def o(name, mode='r'): |
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109 if name != target: |
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110 return opener(name, mode) |
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111 if divert: |
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112 return opener(name + ".a", mode.replace('a', 'w')) |
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113 # otherwise, divert to memory |
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114 return appender(opener(name, mode), buf) |
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115 return o |
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116 |
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117 class changelog(revlog.revlog): |
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118 def __init__(self, opener): |
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119 revlog.revlog.__init__(self, opener, "00changelog.i") |
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120 if self._initempty: |
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121 # changelogs don't benefit from generaldelta |
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122 self.version &= ~revlog.REVLOGGENERALDELTA |
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123 self._generaldelta = False |
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124 self._realopener = opener |
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125 self._delayed = False |
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126 self._divert = False |
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127 self.filteredrevs = () |
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128 |
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129 def tip(self): |
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130 """filtered version of revlog.tip""" |
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131 for i in xrange(len(self) -1, -2, -1): |
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132 if i not in self.filteredrevs: |
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133 return self.node(i) |
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134 |
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135 def __iter__(self): |
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136 """filtered version of revlog.__iter__""" |
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137 if len(self.filteredrevs) == 0: |
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138 return revlog.revlog.__iter__(self) |
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139 |
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140 def filterediter(): |
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141 for i in xrange(len(self)): |
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142 if i not in self.filteredrevs: |
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143 yield i |
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144 |
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145 return filterediter() |
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146 |
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147 def revs(self, start=0, stop=None): |
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148 """filtered version of revlog.revs""" |
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149 for i in super(changelog, self).revs(start, stop): |
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150 if i not in self.filteredrevs: |
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151 yield i |
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152 |
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153 @util.propertycache |
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154 def nodemap(self): |
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155 # XXX need filtering too |
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156 self.rev(self.node(0)) |
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157 return self._nodecache |
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158 |
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159 def hasnode(self, node): |
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160 """filtered version of revlog.hasnode""" |
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161 try: |
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162 i = self.rev(node) |
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163 return i not in self.filteredrevs |
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164 except KeyError: |
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165 return False |
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166 |
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167 def headrevs(self): |
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168 if self.filteredrevs: |
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169 # XXX we should fix and use the C version |
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170 return self._headrevs() |
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171 return super(changelog, self).headrevs() |
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172 |
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173 def strip(self, *args, **kwargs): |
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174 # XXX make something better than assert |
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175 # We can't expect proper strip behavior if we are filtered. |
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176 assert not self.filteredrevs |
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177 super(changelog, self).strip(*args, **kwargs) |
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178 |
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179 def rev(self, node): |
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180 """filtered version of revlog.rev""" |
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181 r = super(changelog, self).rev(node) |
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182 if r in self.filteredrevs: |
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183 raise error.LookupError(node, self.indexfile, _('no node')) |
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184 return r |
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185 |
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186 def node(self, rev): |
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187 """filtered version of revlog.node""" |
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188 if rev in self.filteredrevs: |
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189 raise IndexError(rev) |
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190 return super(changelog, self).node(rev) |
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191 |
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192 def linkrev(self, rev): |
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193 """filtered version of revlog.linkrev""" |
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194 if rev in self.filteredrevs: |
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195 raise IndexError(rev) |
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196 return super(changelog, self).linkrev(rev) |
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197 |
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198 def parentrevs(self, rev): |
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199 """filtered version of revlog.parentrevs""" |
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200 if rev in self.filteredrevs: |
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201 raise IndexError(rev) |
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202 return super(changelog, self).parentrevs(rev) |
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203 |
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204 def flags(self, rev): |
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205 """filtered version of revlog.flags""" |
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206 if rev in self.filteredrevs: |
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207 raise IndexError(rev) |
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208 return super(changelog, self).flags(rev) |
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209 |
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210 def delayupdate(self): |
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211 "delay visibility of index updates to other readers" |
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212 self._delayed = True |
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213 self._divert = (len(self) == 0) |
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214 self._delaybuf = [] |
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215 self.opener = delayopener(self._realopener, self.indexfile, |
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216 self._divert, self._delaybuf) |
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217 |
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218 def finalize(self, tr): |
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219 "finalize index updates" |
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220 self._delayed = False |
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221 self.opener = self._realopener |
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222 # move redirected index data back into place |
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223 if self._divert: |
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224 nfile = self.opener(self.indexfile + ".a") |
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225 n = nfile.name |
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226 nfile.close() |
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227 util.rename(n, n[:-2]) |
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228 elif self._delaybuf: |
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229 fp = self.opener(self.indexfile, 'a') |
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230 fp.write("".join(self._delaybuf)) |
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231 fp.close() |
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232 self._delaybuf = [] |
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233 # split when we're done |
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234 self.checkinlinesize(tr) |
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235 |
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236 def readpending(self, file): |
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237 r = revlog.revlog(self.opener, file) |
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238 self.index = r.index |
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239 self.nodemap = r.nodemap |
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240 self._nodecache = r._nodecache |
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241 self._chunkcache = r._chunkcache |
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242 |
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243 def writepending(self): |
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244 "create a file containing the unfinalized state for pretxnchangegroup" |
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245 if self._delaybuf: |
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246 # make a temporary copy of the index |
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247 fp1 = self._realopener(self.indexfile) |
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248 fp2 = self._realopener(self.indexfile + ".a", "w") |
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249 fp2.write(fp1.read()) |
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250 # add pending data |
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251 fp2.write("".join(self._delaybuf)) |
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252 fp2.close() |
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253 # switch modes so finalize can simply rename |
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254 self._delaybuf = [] |
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255 self._divert = True |
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256 |
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257 if self._divert: |
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258 return True |
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259 |
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260 return False |
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261 |
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262 def checkinlinesize(self, tr, fp=None): |
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263 if not self._delayed: |
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264 revlog.revlog.checkinlinesize(self, tr, fp) |
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265 |
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266 def read(self, node): |
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267 """ |
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268 format used: |
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269 nodeid\n : manifest node in ascii |
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270 user\n : user, no \n or \r allowed |
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271 time tz extra\n : date (time is int or float, timezone is int) |
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272 : extra is metadata, encoded and separated by '\0' |
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273 : older versions ignore it |
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274 files\n\n : files modified by the cset, no \n or \r allowed |
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275 (.*) : comment (free text, ideally utf-8) |
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276 |
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277 changelog v0 doesn't use extra |
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278 """ |
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279 text = self.revision(node) |
37 | 280 if not text: |
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281 return (nullid, "", (0, 0), [], "", _defaultextra) |
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282 last = text.index("\n\n") |
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283 desc = encoding.tolocal(text[last + 2:]) |
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284 l = text[:last].split('\n') |
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285 manifest = bin(l[0]) |
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286 user = encoding.tolocal(l[1]) |
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287 |
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288 tdata = l[2].split(' ', 2) |
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289 if len(tdata) != 3: |
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290 time = float(tdata[0]) |
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291 try: |
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292 # various tools did silly things with the time zone field. |
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293 timezone = int(tdata[1]) |
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294 except ValueError: |
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295 timezone = 0 |
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296 extra = _defaultextra |
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297 else: |
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298 time, timezone = float(tdata[0]), int(tdata[1]) |
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299 extra = decodeextra(tdata[2]) |
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300 |
0
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301 files = l[3:] |
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302 return (manifest, user, (time, timezone), files, desc, extra) |
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303 |
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|
304 def add(self, manifest, files, desc, transaction, p1, p2, |
9677
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305 user, date=None, extra=None): |
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|
306 # Convert to UTF-8 encoded bytestrings as the very first |
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307 # thing: calling any method on a localstr object will turn it |
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308 # into a str object and the cached UTF-8 string is thus lost. |
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309 user, desc = encoding.fromlocal(user), encoding.fromlocal(desc) |
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310 |
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311 user = user.strip() |
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312 # An empty username or a username with a "\n" will make the |
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313 # revision text contain two "\n\n" sequences -> corrupt |
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314 # repository since read cannot unpack the revision. |
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315 if not user: |
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|
316 raise error.RevlogError(_("empty username")) |
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|
317 if "\n" in user: |
7633 | 318 raise error.RevlogError(_("username %s contains a newline") |
319 % repr(user)) | |
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320 |
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321 desc = stripdesc(desc) |
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322 |
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323 if date: |
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324 parseddate = "%d %d" % util.parsedate(date) |
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325 else: |
2522
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Allow the use of human readable dates (issue 251)
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|
326 parseddate = "%d %d" % util.makedate() |
10417
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327 if extra: |
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328 branch = extra.get("branch") |
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329 if branch in ("default", ""): |
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330 del extra["branch"] |
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|
331 elif branch in (".", "null", "tip"): |
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|
332 raise error.RevlogError(_('the name \'%s\' is reserved') |
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|
333 % branch) |
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334 if extra: |
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|
335 extra = encodeextra(extra) |
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|
336 parseddate = "%s %s" % (parseddate, extra) |
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replace util.sort with sorted built-in
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337 l = [hex(manifest), user, parseddate] + sorted(files) + ["", desc] |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
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changeset
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338 text = "\n".join(l) |
6750
fb42030d79d6
add __len__ and __iter__ methods to repo and revlog
Matt Mackall <mpm@selenic.com>
parents:
6259
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changeset
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339 return self.addrevision(text, transaction, len(self), p1, p2) |