Mercurial > hg
annotate mercurial/changelog.py @ 39620:b220851999b5
py3: use '%d' for integers instead of '%s'
Differential Revision: https://phab.mercurial-scm.org/D4593
author | Pulkit Goyal <pulkit@yandex-team.ru> |
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date | Sat, 15 Sep 2018 00:24:05 +0300 |
parents | 5763216ba311 |
children | b63dee7bd0d9 |
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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 __future__ import absolute_import |
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9 |
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10 from .i18n import _ |
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11 from .node import ( |
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12 bin, |
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13 hex, |
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14 nullid, |
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15 ) |
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16 from .thirdparty import ( |
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17 attr, |
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18 ) |
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19 |
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20 from . import ( |
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21 encoding, |
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22 error, |
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23 pycompat, |
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24 revlog, |
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25 ) |
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26 from .utils import ( |
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27 dateutil, |
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28 stringutil, |
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29 ) |
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30 |
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31 _defaultextra = {'branch': 'default'} |
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32 |
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[extendedchangelog] encode/decode function
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33 def _string_escape(text): |
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34 """ |
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35 >>> from .pycompat import bytechr as chr |
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36 >>> d = {b'nl': chr(10), b'bs': chr(92), b'cr': chr(13), b'nul': chr(0)} |
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37 >>> s = b"ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d |
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38 >>> s |
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39 'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n' |
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40 >>> res = _string_escape(s) |
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41 >>> s == stringutil.unescapestr(res) |
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42 True |
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43 """ |
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44 # subset of the string_escape codec |
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45 text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r') |
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46 return text.replace('\0', '\\0') |
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47 |
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48 def decodeextra(text): |
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49 """ |
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50 >>> from .pycompat import bytechr as chr |
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51 >>> sorted(decodeextra(encodeextra({b'foo': b'bar', b'baz': chr(0) + b'2'}) |
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52 ... ).items()) |
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53 [('baz', '\\x002'), ('branch', 'default'), ('foo', 'bar')] |
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54 >>> sorted(decodeextra(encodeextra({b'foo': b'bar', |
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55 ... b'baz': chr(92) + chr(0) + b'2'}) |
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56 ... ).items()) |
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57 [('baz', '\\\\\\x002'), ('branch', 'default'), ('foo', 'bar')] |
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58 """ |
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59 extra = _defaultextra.copy() |
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60 for l in text.split('\0'): |
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61 if l: |
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62 if '\\0' in l: |
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63 # fix up \0 without getting into trouble with \\0 |
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64 l = l.replace('\\\\', '\\\\\n') |
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65 l = l.replace('\\0', '\0') |
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66 l = l.replace('\n', '') |
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67 k, v = stringutil.unescapestr(l).split(':', 1) |
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68 extra[k] = v |
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69 return extra |
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70 |
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71 def encodeextra(d): |
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72 # keys must be sorted to produce a deterministic changelog entry |
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73 items = [_string_escape('%s:%s' % (k, d[k])) for k in sorted(d)] |
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74 return "\0".join(items) |
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75 |
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76 def stripdesc(desc): |
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77 """strip trailing whitespace and leading and trailing empty lines""" |
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78 return '\n'.join([l.rstrip() for l in desc.splitlines()]).strip('\n') |
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79 |
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80 class appender(object): |
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81 '''the changelog index must be updated last on disk, so we use this class |
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82 to delay writes to it''' |
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83 def __init__(self, vfs, name, mode, buf): |
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84 self.data = buf |
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85 fp = vfs(name, mode) |
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86 self.fp = fp |
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87 self.offset = fp.tell() |
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88 self.size = vfs.fstat(fp).st_size |
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89 self._end = self.size |
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90 |
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91 def end(self): |
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92 return self._end |
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93 def tell(self): |
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94 return self.offset |
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95 def flush(self): |
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96 pass |
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97 |
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98 @property |
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99 def closed(self): |
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100 return self.fp.closed |
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101 |
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102 def close(self): |
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103 self.fp.close() |
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104 |
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105 def seek(self, offset, whence=0): |
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106 '''virtual file offset spans real file and data''' |
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107 if whence == 0: |
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108 self.offset = offset |
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109 elif whence == 1: |
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110 self.offset += offset |
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111 elif whence == 2: |
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112 self.offset = self.end() + offset |
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113 if self.offset < self.size: |
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114 self.fp.seek(self.offset) |
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115 |
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116 def read(self, count=-1): |
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117 '''only trick here is reads that span real file and data''' |
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118 ret = "" |
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119 if self.offset < self.size: |
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120 s = self.fp.read(count) |
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121 ret = s |
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122 self.offset += len(s) |
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123 if count > 0: |
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124 count -= len(s) |
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125 if count != 0: |
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126 doff = self.offset - self.size |
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127 self.data.insert(0, "".join(self.data)) |
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128 del self.data[1:] |
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129 s = self.data[0][doff:doff + count] |
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130 self.offset += len(s) |
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131 ret += s |
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132 return ret |
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133 |
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134 def write(self, s): |
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135 self.data.append(bytes(s)) |
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136 self.offset += len(s) |
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137 self._end += len(s) |
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138 |
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139 def __enter__(self): |
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140 self.fp.__enter__() |
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141 return self |
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142 |
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143 def __exit__(self, *args): |
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144 return self.fp.__exit__(*args) |
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145 |
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146 def _divertopener(opener, target): |
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147 """build an opener that writes in 'target.a' instead of 'target'""" |
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148 def _divert(name, mode='r', checkambig=False): |
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149 if name != target: |
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150 return opener(name, mode) |
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151 return opener(name + ".a", mode) |
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152 return _divert |
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153 |
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154 def _delayopener(opener, target, buf): |
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155 """build an opener that stores chunks in 'buf' instead of 'target'""" |
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156 def _delay(name, mode='r', checkambig=False): |
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157 if name != target: |
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158 return opener(name, mode) |
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159 return appender(opener, name, mode, buf) |
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160 return _delay |
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161 |
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162 @attr.s |
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163 class _changelogrevision(object): |
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164 # Extensions might modify _defaultextra, so let the constructor below pass |
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165 # it in |
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166 extra = attr.ib() |
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167 manifest = attr.ib(default=nullid) |
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168 user = attr.ib(default='') |
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169 date = attr.ib(default=(0, 0)) |
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170 files = attr.ib(default=attr.Factory(list)) |
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171 description = attr.ib(default='') |
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172 |
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173 class changelogrevision(object): |
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174 """Holds results of a parsed changelog revision. |
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175 |
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176 Changelog revisions consist of multiple pieces of data, including |
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177 the manifest node, user, and date. This object exposes a view into |
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178 the parsed object. |
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179 """ |
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180 |
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181 __slots__ = ( |
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182 u'_offsets', |
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183 u'_text', |
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184 ) |
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185 |
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186 def __new__(cls, text): |
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187 if not text: |
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188 return _changelogrevision(extra=_defaultextra) |
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189 |
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190 self = super(changelogrevision, cls).__new__(cls) |
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191 # We could return here and implement the following as an __init__. |
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192 # But doing it here is equivalent and saves an extra function call. |
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193 |
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194 # format used: |
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195 # nodeid\n : manifest node in ascii |
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196 # user\n : user, no \n or \r allowed |
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197 # time tz extra\n : date (time is int or float, timezone is int) |
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198 # : extra is metadata, encoded and separated by '\0' |
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199 # : older versions ignore it |
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200 # files\n\n : files modified by the cset, no \n or \r allowed |
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201 # (.*) : comment (free text, ideally utf-8) |
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202 # |
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203 # changelog v0 doesn't use extra |
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204 |
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205 nl1 = text.index('\n') |
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206 nl2 = text.index('\n', nl1 + 1) |
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207 nl3 = text.index('\n', nl2 + 1) |
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208 |
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209 # The list of files may be empty. Which means nl3 is the first of the |
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210 # double newline that precedes the description. |
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211 if text[nl3 + 1:nl3 + 2] == '\n': |
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212 doublenl = nl3 |
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213 else: |
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214 doublenl = text.index('\n\n', nl3 + 1) |
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215 |
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216 self._offsets = (nl1, nl2, nl3, doublenl) |
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217 self._text = text |
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218 |
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219 return self |
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220 |
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221 @property |
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222 def manifest(self): |
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223 return bin(self._text[0:self._offsets[0]]) |
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224 |
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225 @property |
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226 def user(self): |
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227 off = self._offsets |
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228 return encoding.tolocal(self._text[off[0] + 1:off[1]]) |
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229 |
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230 @property |
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231 def _rawdate(self): |
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232 off = self._offsets |
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233 dateextra = self._text[off[1] + 1:off[2]] |
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234 return dateextra.split(' ', 2)[0:2] |
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235 |
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236 @property |
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237 def _rawextra(self): |
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238 off = self._offsets |
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239 dateextra = self._text[off[1] + 1:off[2]] |
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240 fields = dateextra.split(' ', 2) |
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241 if len(fields) != 3: |
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242 return None |
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243 |
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244 return fields[2] |
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245 |
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246 @property |
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247 def date(self): |
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248 raw = self._rawdate |
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249 time = float(raw[0]) |
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250 # Various tools did silly things with the timezone. |
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251 try: |
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252 timezone = int(raw[1]) |
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253 except ValueError: |
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254 timezone = 0 |
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255 |
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256 return time, timezone |
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257 |
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258 @property |
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259 def extra(self): |
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260 raw = self._rawextra |
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261 if raw is None: |
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262 return _defaultextra |
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263 |
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264 return decodeextra(raw) |
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265 |
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266 @property |
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267 def files(self): |
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268 off = self._offsets |
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269 if off[2] == off[3]: |
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270 return [] |
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271 |
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272 return self._text[off[2] + 1:off[3]].split('\n') |
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273 |
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274 @property |
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275 def description(self): |
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276 return encoding.tolocal(self._text[self._offsets[3] + 2:]) |
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277 |
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278 class changelog(revlog.revlog): |
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279 def __init__(self, opener, trypending=False): |
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280 """Load a changelog revlog using an opener. |
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281 |
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282 If ``trypending`` is true, we attempt to load the index from a |
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283 ``00changelog.i.a`` file instead of the default ``00changelog.i``. |
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284 The ``00changelog.i.a`` file contains index (and possibly inline |
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285 revision) data for a transaction that hasn't been finalized yet. |
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286 It exists in a separate file to facilitate readers (such as |
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287 hooks processes) accessing data before a transaction is finalized. |
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288 """ |
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289 if trypending and opener.exists('00changelog.i.a'): |
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290 indexfile = '00changelog.i.a' |
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291 else: |
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292 indexfile = '00changelog.i' |
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293 |
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294 datafile = '00changelog.d' |
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295 revlog.revlog.__init__(self, opener, indexfile, datafile=datafile, |
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296 checkambig=True, mmaplargeindex=True) |
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297 |
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298 if self._initempty: |
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299 # changelogs don't benefit from generaldelta |
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300 self.version &= ~revlog.FLAG_GENERALDELTA |
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301 self._generaldelta = False |
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302 |
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303 # Delta chains for changelogs tend to be very small because entries |
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304 # tend to be small and don't delta well with each. So disable delta |
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305 # chains. |
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306 self._storedeltachains = False |
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307 |
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|
308 self._realopener = opener |
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309 self._delayed = False |
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310 self._delaybuf = None |
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311 self._divert = False |
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312 self.filteredrevs = frozenset() |
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313 |
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314 def tiprev(self): |
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315 for i in pycompat.xrange(len(self) -1, -2, -1): |
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316 if i not in self.filteredrevs: |
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317 return i |
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318 |
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319 def tip(self): |
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320 """filtered version of revlog.tip""" |
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321 return self.node(self.tiprev()) |
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322 |
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323 def __contains__(self, rev): |
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324 """filtered version of revlog.__contains__""" |
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325 return (0 <= rev < len(self) |
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326 and rev not in self.filteredrevs) |
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327 |
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328 def __iter__(self): |
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329 """filtered version of revlog.__iter__""" |
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330 if len(self.filteredrevs) == 0: |
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331 return revlog.revlog.__iter__(self) |
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332 |
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333 def filterediter(): |
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334 for i in pycompat.xrange(len(self)): |
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335 if i not in self.filteredrevs: |
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336 yield i |
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337 |
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338 return filterediter() |
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339 |
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340 def revs(self, start=0, stop=None): |
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341 """filtered version of revlog.revs""" |
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342 for i in super(changelog, self).revs(start, stop): |
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343 if i not in self.filteredrevs: |
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344 yield i |
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345 |
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346 def reachableroots(self, minroot, heads, roots, includepath=False): |
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347 return self.index.reachableroots2(minroot, heads, roots, includepath) |
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348 |
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349 def headrevs(self): |
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350 if self.filteredrevs: |
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351 try: |
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352 return self.index.headrevsfiltered(self.filteredrevs) |
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353 # AttributeError covers non-c-extension environments and |
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354 # old c extensions without filter handling. |
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355 except AttributeError: |
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356 return self._headrevs() |
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357 |
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358 return super(changelog, self).headrevs() |
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359 |
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360 def strip(self, *args, **kwargs): |
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361 # XXX make something better than assert |
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362 # We can't expect proper strip behavior if we are filtered. |
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363 assert not self.filteredrevs |
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364 super(changelog, self).strip(*args, **kwargs) |
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365 |
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366 def rev(self, node): |
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367 """filtered version of revlog.rev""" |
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368 r = super(changelog, self).rev(node) |
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369 if r in self.filteredrevs: |
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370 raise error.FilteredLookupError(hex(node), self.indexfile, |
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371 _('filtered node')) |
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372 return r |
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373 |
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374 def node(self, rev): |
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375 """filtered version of revlog.node""" |
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376 if rev in self.filteredrevs: |
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377 raise error.FilteredIndexError(rev) |
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378 return super(changelog, self).node(rev) |
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379 |
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380 def linkrev(self, rev): |
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381 """filtered version of revlog.linkrev""" |
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382 if rev in self.filteredrevs: |
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383 raise error.FilteredIndexError(rev) |
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384 return super(changelog, self).linkrev(rev) |
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385 |
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386 def parentrevs(self, rev): |
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387 """filtered version of revlog.parentrevs""" |
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388 if rev in self.filteredrevs: |
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389 raise error.FilteredIndexError(rev) |
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390 return super(changelog, self).parentrevs(rev) |
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391 |
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392 def flags(self, rev): |
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393 """filtered version of revlog.flags""" |
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394 if rev in self.filteredrevs: |
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395 raise error.FilteredIndexError(rev) |
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396 return super(changelog, self).flags(rev) |
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9117c6561b0b
Add back links from file revisions to changeset revisions
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397 |
23203
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398 def delayupdate(self, tr): |
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399 "delay visibility of index updates to other readers" |
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400 |
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401 if not self._delayed: |
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402 if len(self) == 0: |
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403 self._divert = True |
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404 if self._realopener.exists(self.indexfile + '.a'): |
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|
405 self._realopener.unlink(self.indexfile + '.a') |
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406 self.opener = _divertopener(self._realopener, self.indexfile) |
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407 else: |
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408 self._delaybuf = [] |
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409 self.opener = _delayopener(self._realopener, self.indexfile, |
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|
410 self._delaybuf) |
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|
411 self._delayed = True |
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|
412 tr.addpending('cl-%i' % id(self), self._writepending) |
23281
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transaction: pass the transaction to 'finalize' callback
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413 tr.addfinalize('cl-%i' % id(self), self._finalize) |
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414 |
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|
415 def _finalize(self, tr): |
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416 "finalize index updates" |
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417 self._delayed = False |
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418 self.opener = self._realopener |
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419 # move redirected index data back into place |
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420 if self._divert: |
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|
421 assert not self._delaybuf |
19898
3f92e749d381
changelog: use "vfs.rename()" instead of "util.rename()"
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parents:
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|
422 tmpname = self.indexfile + ".a" |
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|
423 nfile = self.opener.open(tmpname) |
14207
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changelog: fixes leaked file handle
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14004
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|
424 nfile.close() |
29999
003c41edc5f5
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|
425 self.opener.rename(tmpname, self.indexfile, checkambig=True) |
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426 elif self._delaybuf: |
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427 fp = self.opener(self.indexfile, 'a', checkambig=True) |
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428 fp.write("".join(self._delaybuf)) |
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429 fp.close() |
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430 self._delaybuf = None |
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431 self._divert = False |
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432 # split when we're done |
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revlog: rename 'self.checkinlinesize' into '_enforceinlinesize'
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|
433 self._enforceinlinesize(tr) |
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434 |
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|
435 def _writepending(self, tr): |
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Introduce HG_PREPEND to solve pretxn races
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|
436 "create a file containing the unfinalized state for pretxnchangegroup" |
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437 if self._delaybuf: |
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438 # make a temporary copy of the index |
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439 fp1 = self._realopener(self.indexfile) |
23292
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|
440 pendingfilename = self.indexfile + ".a" |
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441 # register as a temp file to ensure cleanup on failure |
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442 tr.registertmp(pendingfilename) |
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443 # write existing data |
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|
444 fp2 = self._realopener(pendingfilename, "w") |
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|
445 fp2.write(fp1.read()) |
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|
446 # add pending data |
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|
447 fp2.write("".join(self._delaybuf)) |
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|
448 fp2.close() |
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449 # switch modes so finalize can simply rename |
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450 self._delaybuf = None |
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451 self._divert = True |
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452 self.opener = _divertopener(self._realopener, self.indexfile) |
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453 |
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454 if self._divert: |
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455 return True |
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changeset
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456 |
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457 return False |
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parents:
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changeset
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458 |
35974
9ba1d0c724e2
revlog: rename 'self.checkinlinesize' into '_enforceinlinesize'
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parents:
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diff
changeset
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459 def _enforceinlinesize(self, tr, fp=None): |
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460 if not self._delayed: |
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parents:
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diff
changeset
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461 revlog.revlog._enforceinlinesize(self, tr, fp) |
4261
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restructure changelog file appending
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changeset
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462 |
5744
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changelog: remove extract function
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463 def read(self, node): |
28487
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464 """Obtain data from a parsed changelog revision. |
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465 |
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466 Returns a 6-tuple of: |
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467 |
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468 - manifest node in binary |
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469 - author/user as a localstr |
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470 - date as a 2-tuple of (time, timezone) |
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471 - list of files |
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472 - commit message as a localstr |
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473 - dict of extra metadata |
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474 |
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475 Unless you need to access all fields, consider calling |
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476 ``changelogrevision`` instead, as it is faster for partial object |
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477 access. |
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document changelog format
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478 """ |
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479 c = changelogrevision(self.revision(node)) |
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480 return ( |
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481 c.manifest, |
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482 c.user, |
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483 c.date, |
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484 c.files, |
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485 c.description, |
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486 c.extra |
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487 ) |
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488 |
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489 def changelogrevision(self, nodeorrev): |
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490 """Obtain a ``changelogrevision`` for a node or revision.""" |
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491 return changelogrevision(self.revision(nodeorrev)) |
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492 |
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493 def readfiles(self, node): |
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494 """ |
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495 short version of read that only returns the files modified by the cset |
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496 """ |
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497 text = self.revision(node) |
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498 if not text: |
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499 return [] |
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500 last = text.index("\n\n") |
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501 l = text[:last].split('\n') |
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502 return l[3:] |
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|
503 |
8422
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changelog: removed bad default arguments in add method
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504 def add(self, manifest, files, desc, transaction, p1, p2, |
9677
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505 user, date=None, extra=None): |
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506 # Convert to UTF-8 encoded bytestrings as the very first |
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507 # thing: calling any method on a localstr object will turn it |
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508 # into a str object and the cached UTF-8 string is thus lost. |
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|
509 user, desc = encoding.fromlocal(user), encoding.fromlocal(desc) |
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|
510 |
7035
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forbid username with '\n' at the changelog level
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511 user = user.strip() |
8424
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|
512 # An empty username or a username with a "\n" will make the |
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513 # revision text contain two "\n\n" sequences -> corrupt |
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514 # repository since read cannot unpack the revision. |
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515 if not user: |
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|
516 raise error.RevlogError(_("empty username")) |
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changeset
|
517 if "\n" in user: |
36228
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py3: use pycompat.bytestr to convert str to bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents:
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|
518 raise error.RevlogError(_("username %r contains a newline") |
ddeb7653b31c
py3: use pycompat.bytestr to convert str to bytes
Pulkit Goyal <7895pulkit@gmail.com>
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|
519 % pycompat.bytestr(user)) |
8499
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commit: move description trimming into changelog
Matt Mackall <mpm@selenic.com>
parents:
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changeset
|
520 |
17810
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changelog: extract description cleaning logic in a dedicated function
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
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|
521 desc = stripdesc(desc) |
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commit: move description trimming into changelog
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parents:
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changeset
|
522 |
1195
f92af8d53330
Validate user input of dates when adding a changelog entry.
Bryan O'Sullivan <bos@serpentine.com>
parents:
1095
diff
changeset
|
523 if date: |
36607
c6061cadb400
util: extract all date-related utils in utils/dateutil module
Boris Feld <boris.feld@octobus.net>
parents:
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diff
changeset
|
524 parseddate = "%d %d" % dateutil.parsedate(date) |
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Validate user input of dates when adding a changelog entry.
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|
525 else: |
36607
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Boris Feld <boris.feld@octobus.net>
parents:
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|
526 parseddate = "%d %d" % dateutil.makedate() |
10417
58e040c51231
branch: avoid using reserved tag names
Wagner Bruna <wbruna@softwareexpress.com.br>
parents:
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changeset
|
527 if extra: |
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|
528 branch = extra.get("branch") |
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|
529 if branch in ("default", ""): |
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|
530 del extra["branch"] |
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parents:
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|
531 elif branch in (".", "null", "tip"): |
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parents:
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diff
changeset
|
532 raise error.RevlogError(_('the name \'%s\' is reserved') |
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diff
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|
533 % branch) |
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|
534 if extra: |
8443
53ff4a5af284
changelog: turn {de,en}code_extra methods into functions
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parents:
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changeset
|
535 extra = encodeextra(extra) |
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|
536 parseddate = "%s %s" % (parseddate, extra) |
8209
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replace util.sort with sorted built-in
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parents:
7948
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changeset
|
537 l = [hex(manifest), user, parseddate] + sorted(files) + ["", desc] |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
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diff
changeset
|
538 text = "\n".join(l) |
6750
fb42030d79d6
add __len__ and __iter__ methods to repo and revlog
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parents:
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diff
changeset
|
539 return self.addrevision(text, transaction, len(self), p1, p2) |
18306
06185554e7e3
changelog: add a `branch` method, bypassing changectx
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
18231
diff
changeset
|
540 |
20185
7d4219512823
branchmap: cache open/closed branch head information
Brodie Rao <brodie@sf.io>
parents:
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diff
changeset
|
541 def branchinfo(self, rev): |
7d4219512823
branchmap: cache open/closed branch head information
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parents:
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diff
changeset
|
542 """return the branch name and open/close state of a revision |
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parents:
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diff
changeset
|
543 |
18308
4e27b06a0fd9
changelog: please check-code and remove tabs
Mads Kiilerich <mads@kiilerich.com>
parents:
18306
diff
changeset
|
544 This function exists because creating a changectx object |
4e27b06a0fd9
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diff
changeset
|
545 just to access this is costly.""" |
20185
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parents:
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changeset
|
546 extra = self.read(rev)[5] |
7d4219512823
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parents:
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diff
changeset
|
547 return encoding.tolocal(extra.get("branch")), 'close' in extra |