Mercurial > hg
annotate mercurial/changelog.py @ 29268:f200b58497f1
sslutil: reference appropriate config section in messaging
Error messages reference the config section defining the host
fingerprint. Now that we have multiple sections where this config
setting could live, we need to point the user at the appropriate
one.
We default to the new "hostsecurity" section. But we will still
refer them to the "hostfingerprint" section if a value is defined
there.
There are some corner cases where the messaging might be off. e.g.
they could define a SHA-1 fingerprint in both sections. IMO the
messaging needs a massive overhaul. I plan to do this as part
of future refactoring to security settings.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 28 May 2016 12:58:46 -0700 |
parents | 70c2f8a98276 |
children | 2f64e5a6efb8 |
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 __future__ import absolute_import |
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9 |
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10 import collections |
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11 |
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12 from .i18n import _ |
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13 from .node import ( |
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14 bin, |
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15 hex, |
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16 nullid, |
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17 ) |
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18 |
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19 from . import ( |
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20 encoding, |
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21 error, |
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22 revlog, |
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23 util, |
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24 ) |
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25 |
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26 _defaultextra = {'branch': 'default'} |
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27 |
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28 def _string_escape(text): |
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29 """ |
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30 >>> d = {'nl': chr(10), 'bs': chr(92), 'cr': chr(13), 'nul': chr(0)} |
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31 >>> s = "ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d |
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32 >>> s |
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33 'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n' |
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34 >>> res = _string_escape(s) |
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35 >>> s == res.decode('string_escape') |
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36 True |
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37 """ |
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38 # subset of the string_escape codec |
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39 text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r') |
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40 return text.replace('\0', '\\0') |
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41 |
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42 def decodeextra(text): |
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43 """ |
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44 >>> sorted(decodeextra(encodeextra({'foo': 'bar', 'baz': chr(0) + '2'}) |
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45 ... ).iteritems()) |
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46 [('baz', '\\x002'), ('branch', 'default'), ('foo', 'bar')] |
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47 >>> sorted(decodeextra(encodeextra({'foo': 'bar', |
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48 ... 'baz': chr(92) + chr(0) + '2'}) |
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49 ... ).iteritems()) |
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50 [('baz', '\\\\\\x002'), ('branch', 'default'), ('foo', 'bar')] |
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51 """ |
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52 extra = _defaultextra.copy() |
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53 for l in text.split('\0'): |
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54 if l: |
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55 if '\\0' in l: |
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56 # fix up \0 without getting into trouble with \\0 |
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57 l = l.replace('\\\\', '\\\\\n') |
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58 l = l.replace('\\0', '\0') |
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59 l = l.replace('\n', '') |
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60 k, v = l.decode('string_escape').split(':', 1) |
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61 extra[k] = v |
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62 return extra |
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63 |
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64 def encodeextra(d): |
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65 # keys must be sorted to produce a deterministic changelog entry |
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66 items = [_string_escape('%s:%s' % (k, d[k])) for k in sorted(d)] |
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67 return "\0".join(items) |
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68 |
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69 def stripdesc(desc): |
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70 """strip trailing whitespace and leading and trailing empty lines""" |
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71 return '\n'.join([l.rstrip() for l in desc.splitlines()]).strip('\n') |
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72 |
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73 class appender(object): |
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74 '''the changelog index must be updated last on disk, so we use this class |
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75 to delay writes to it''' |
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76 def __init__(self, vfs, name, mode, buf): |
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77 self.data = buf |
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78 fp = vfs(name, mode) |
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79 self.fp = fp |
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80 self.offset = fp.tell() |
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81 self.size = vfs.fstat(fp).st_size |
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82 |
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83 def end(self): |
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84 return self.size + len("".join(self.data)) |
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85 def tell(self): |
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86 return self.offset |
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87 def flush(self): |
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88 pass |
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89 def close(self): |
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90 self.fp.close() |
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91 |
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92 def seek(self, offset, whence=0): |
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93 '''virtual file offset spans real file and data''' |
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94 if whence == 0: |
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95 self.offset = offset |
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96 elif whence == 1: |
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97 self.offset += offset |
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98 elif whence == 2: |
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99 self.offset = self.end() + offset |
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100 if self.offset < self.size: |
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101 self.fp.seek(self.offset) |
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102 |
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103 def read(self, count=-1): |
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104 '''only trick here is reads that span real file and data''' |
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105 ret = "" |
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106 if self.offset < self.size: |
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107 s = self.fp.read(count) |
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108 ret = s |
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109 self.offset += len(s) |
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110 if count > 0: |
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111 count -= len(s) |
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112 if count != 0: |
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113 doff = self.offset - self.size |
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114 self.data.insert(0, "".join(self.data)) |
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115 del self.data[1:] |
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116 s = self.data[0][doff:doff + count] |
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117 self.offset += len(s) |
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118 ret += s |
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119 return ret |
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120 |
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121 def write(self, s): |
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122 self.data.append(str(s)) |
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123 self.offset += len(s) |
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124 |
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125 def _divertopener(opener, target): |
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126 """build an opener that writes in 'target.a' instead of 'target'""" |
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127 def _divert(name, mode='r'): |
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128 if name != target: |
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129 return opener(name, mode) |
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130 return opener(name + ".a", mode) |
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131 return _divert |
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132 |
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133 def _delayopener(opener, target, buf): |
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134 """build an opener that stores chunks in 'buf' instead of 'target'""" |
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135 def _delay(name, mode='r'): |
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136 if name != target: |
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137 return opener(name, mode) |
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138 return appender(opener, name, mode, buf) |
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139 return _delay |
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140 |
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141 _changelogrevision = collections.namedtuple('changelogrevision', |
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142 ('manifest', 'user', 'date', |
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143 'files', 'description', 'extra')) |
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144 |
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145 class changelogrevision(object): |
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146 """Holds results of a parsed changelog revision. |
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147 |
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148 Changelog revisions consist of multiple pieces of data, including |
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149 the manifest node, user, and date. This object exposes a view into |
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150 the parsed object. |
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151 """ |
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152 |
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153 __slots__ = ( |
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154 '_offsets', |
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155 '_text', |
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156 ) |
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157 |
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158 def __new__(cls, text): |
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159 if not text: |
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160 return _changelogrevision( |
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161 manifest=nullid, |
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162 user='', |
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163 date=(0, 0), |
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164 files=[], |
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165 description='', |
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166 extra=_defaultextra, |
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167 ) |
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168 |
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169 self = super(changelogrevision, cls).__new__(cls) |
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170 # We could return here and implement the following as an __init__. |
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171 # But doing it here is equivalent and saves an extra function call. |
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172 |
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173 # format used: |
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174 # nodeid\n : manifest node in ascii |
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175 # user\n : user, no \n or \r allowed |
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176 # time tz extra\n : date (time is int or float, timezone is int) |
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177 # : extra is metadata, encoded and separated by '\0' |
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178 # : older versions ignore it |
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179 # files\n\n : files modified by the cset, no \n or \r allowed |
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180 # (.*) : comment (free text, ideally utf-8) |
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181 # |
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182 # changelog v0 doesn't use extra |
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183 |
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184 nl1 = text.index('\n') |
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185 nl2 = text.index('\n', nl1 + 1) |
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186 nl3 = text.index('\n', nl2 + 1) |
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187 |
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188 # The list of files may be empty. Which means nl3 is the first of the |
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189 # double newline that precedes the description. |
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190 if text[nl3 + 1] == '\n': |
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191 doublenl = nl3 |
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192 else: |
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193 doublenl = text.index('\n\n', nl3 + 1) |
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194 |
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195 self._offsets = (nl1, nl2, nl3, doublenl) |
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196 self._text = text |
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197 |
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198 return self |
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199 |
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200 @property |
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201 def manifest(self): |
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202 return bin(self._text[0:self._offsets[0]]) |
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203 |
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204 @property |
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205 def user(self): |
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206 off = self._offsets |
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207 return encoding.tolocal(self._text[off[0] + 1:off[1]]) |
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208 |
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209 @property |
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210 def _rawdate(self): |
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211 off = self._offsets |
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212 dateextra = self._text[off[1] + 1:off[2]] |
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213 return dateextra.split(' ', 2)[0:2] |
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214 |
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215 @property |
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216 def _rawextra(self): |
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217 off = self._offsets |
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218 dateextra = self._text[off[1] + 1:off[2]] |
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219 fields = dateextra.split(' ', 2) |
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220 if len(fields) != 3: |
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221 return None |
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222 |
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223 return fields[2] |
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224 |
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225 @property |
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226 def date(self): |
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227 raw = self._rawdate |
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228 time = float(raw[0]) |
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229 # Various tools did silly things with the timezone. |
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230 try: |
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231 timezone = int(raw[1]) |
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232 except ValueError: |
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233 timezone = 0 |
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234 |
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235 return time, timezone |
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236 |
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237 @property |
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238 def extra(self): |
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239 raw = self._rawextra |
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240 if raw is None: |
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241 return _defaultextra |
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242 |
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243 return decodeextra(raw) |
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244 |
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245 @property |
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246 def files(self): |
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247 off = self._offsets |
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248 if off[2] == off[3]: |
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249 return [] |
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250 |
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251 return self._text[off[2] + 1:off[3]].split('\n') |
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252 |
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253 @property |
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254 def description(self): |
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255 return encoding.tolocal(self._text[self._offsets[3] + 2:]) |
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256 |
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257 class changelog(revlog.revlog): |
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258 def __init__(self, opener): |
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259 revlog.revlog.__init__(self, opener, "00changelog.i") |
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260 if self._initempty: |
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261 # changelogs don't benefit from generaldelta |
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262 self.version &= ~revlog.REVLOGGENERALDELTA |
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263 self._generaldelta = False |
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264 self._realopener = opener |
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265 self._delayed = False |
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266 self._delaybuf = None |
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267 self._divert = False |
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268 self.filteredrevs = frozenset() |
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269 |
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270 def tip(self): |
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271 """filtered version of revlog.tip""" |
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272 for i in xrange(len(self) -1, -2, -1): |
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273 if i not in self.filteredrevs: |
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274 return self.node(i) |
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275 |
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276 def __contains__(self, rev): |
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277 """filtered version of revlog.__contains__""" |
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278 return (0 <= rev < len(self) |
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279 and rev not in self.filteredrevs) |
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280 |
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281 def __iter__(self): |
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282 """filtered version of revlog.__iter__""" |
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283 if len(self.filteredrevs) == 0: |
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284 return revlog.revlog.__iter__(self) |
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285 |
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286 def filterediter(): |
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287 for i in xrange(len(self)): |
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288 if i not in self.filteredrevs: |
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289 yield i |
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290 |
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291 return filterediter() |
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292 |
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293 def revs(self, start=0, stop=None): |
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294 """filtered version of revlog.revs""" |
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295 for i in super(changelog, self).revs(start, stop): |
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296 if i not in self.filteredrevs: |
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297 yield i |
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298 |
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299 @util.propertycache |
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300 def nodemap(self): |
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301 # XXX need filtering too |
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302 self.rev(self.node(0)) |
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303 return self._nodecache |
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304 |
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305 def reachableroots(self, minroot, heads, roots, includepath=False): |
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306 return self.index.reachableroots2(minroot, heads, roots, includepath) |
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307 |
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308 def headrevs(self): |
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309 if self.filteredrevs: |
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310 try: |
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311 return self.index.headrevsfiltered(self.filteredrevs) |
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312 # AttributeError covers non-c-extension environments and |
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313 # old c extensions without filter handling. |
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314 except AttributeError: |
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315 return self._headrevs() |
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316 |
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317 return super(changelog, self).headrevs() |
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318 |
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319 def strip(self, *args, **kwargs): |
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320 # XXX make something better than assert |
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321 # We can't expect proper strip behavior if we are filtered. |
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322 assert not self.filteredrevs |
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323 super(changelog, self).strip(*args, **kwargs) |
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324 |
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325 def rev(self, node): |
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326 """filtered version of revlog.rev""" |
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327 r = super(changelog, self).rev(node) |
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328 if r in self.filteredrevs: |
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329 raise error.FilteredLookupError(hex(node), self.indexfile, |
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330 _('filtered node')) |
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331 return r |
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332 |
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333 def node(self, rev): |
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334 """filtered version of revlog.node""" |
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335 if rev in self.filteredrevs: |
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336 raise error.FilteredIndexError(rev) |
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337 return super(changelog, self).node(rev) |
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338 |
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339 def linkrev(self, rev): |
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340 """filtered version of revlog.linkrev""" |
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341 if rev in self.filteredrevs: |
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342 raise error.FilteredIndexError(rev) |
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343 return super(changelog, self).linkrev(rev) |
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344 |
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345 def parentrevs(self, rev): |
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346 """filtered version of revlog.parentrevs""" |
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347 if rev in self.filteredrevs: |
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348 raise error.FilteredIndexError(rev) |
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349 return super(changelog, self).parentrevs(rev) |
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350 |
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351 def flags(self, rev): |
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352 """filtered version of revlog.flags""" |
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353 if rev in self.filteredrevs: |
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354 raise error.FilteredIndexError(rev) |
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355 return super(changelog, self).flags(rev) |
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356 |
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357 def delayupdate(self, tr): |
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358 "delay visibility of index updates to other readers" |
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359 |
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360 if not self._delayed: |
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361 if len(self) == 0: |
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362 self._divert = True |
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363 if self._realopener.exists(self.indexfile + '.a'): |
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364 self._realopener.unlink(self.indexfile + '.a') |
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365 self.opener = _divertopener(self._realopener, self.indexfile) |
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366 else: |
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367 self._delaybuf = [] |
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368 self.opener = _delayopener(self._realopener, self.indexfile, |
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369 self._delaybuf) |
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370 self._delayed = True |
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371 tr.addpending('cl-%i' % id(self), self._writepending) |
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372 tr.addfinalize('cl-%i' % id(self), self._finalize) |
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373 |
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374 def _finalize(self, tr): |
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375 "finalize index updates" |
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376 self._delayed = False |
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377 self.opener = self._realopener |
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378 # move redirected index data back into place |
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379 if self._divert: |
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380 assert not self._delaybuf |
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381 tmpname = self.indexfile + ".a" |
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382 nfile = self.opener.open(tmpname) |
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383 nfile.close() |
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384 self.opener.rename(tmpname, self.indexfile) |
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385 elif self._delaybuf: |
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386 fp = self.opener(self.indexfile, 'a') |
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387 fp.write("".join(self._delaybuf)) |
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388 fp.close() |
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389 self._delaybuf = None |
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390 self._divert = False |
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391 # split when we're done |
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392 self.checkinlinesize(tr) |
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393 |
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394 def readpending(self, file): |
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395 """read index data from a "pending" file |
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396 |
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397 During a transaction, the actual changeset data is already stored in the |
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398 main file, but not yet finalized in the on-disk index. Instead, a |
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399 "pending" index is written by the transaction logic. If this function |
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400 is running, we are likely in a subprocess invoked in a hook. The |
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401 subprocess is informed that it is within a transaction and needs to |
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402 access its content. |
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403 |
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404 This function will read all the index data out of the pending file and |
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405 overwrite the main index.""" |
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406 |
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407 if not self.opener.exists(file): |
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408 return # no pending data for changelog |
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409 r = revlog.revlog(self.opener, file) |
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410 self.index = r.index |
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411 self.nodemap = r.nodemap |
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412 self._nodecache = r._nodecache |
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413 self._chunkcache = r._chunkcache |
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414 |
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415 def _writepending(self, tr): |
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416 "create a file containing the unfinalized state for pretxnchangegroup" |
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417 if self._delaybuf: |
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418 # make a temporary copy of the index |
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419 fp1 = self._realopener(self.indexfile) |
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420 pendingfilename = self.indexfile + ".a" |
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421 # register as a temp file to ensure cleanup on failure |
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422 tr.registertmp(pendingfilename) |
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423 # write existing data |
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424 fp2 = self._realopener(pendingfilename, "w") |
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425 fp2.write(fp1.read()) |
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426 # add pending data |
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427 fp2.write("".join(self._delaybuf)) |
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428 fp2.close() |
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429 # switch modes so finalize can simply rename |
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430 self._delaybuf = None |
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431 self._divert = True |
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432 self.opener = _divertopener(self._realopener, self.indexfile) |
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433 |
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434 if self._divert: |
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435 return True |
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436 |
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437 return False |
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438 |
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439 def checkinlinesize(self, tr, fp=None): |
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440 if not self._delayed: |
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441 revlog.revlog.checkinlinesize(self, tr, fp) |
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442 |
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443 def read(self, node): |
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444 """Obtain data from a parsed changelog revision. |
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445 |
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446 Returns a 6-tuple of: |
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447 |
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448 - manifest node in binary |
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449 - author/user as a localstr |
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450 - date as a 2-tuple of (time, timezone) |
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451 - list of files |
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452 - commit message as a localstr |
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453 - dict of extra metadata |
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454 |
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455 Unless you need to access all fields, consider calling |
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456 ``changelogrevision`` instead, as it is faster for partial object |
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457 access. |
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458 """ |
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459 c = changelogrevision(self.revision(node)) |
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460 return ( |
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461 c.manifest, |
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462 c.user, |
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463 c.date, |
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464 c.files, |
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465 c.description, |
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466 c.extra |
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467 ) |
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468 |
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469 def changelogrevision(self, nodeorrev): |
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470 """Obtain a ``changelogrevision`` for a node or revision.""" |
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471 return changelogrevision(self.revision(nodeorrev)) |
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472 |
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473 def readfiles(self, node): |
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474 """ |
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475 short version of read that only returns the files modified by the cset |
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476 """ |
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477 text = self.revision(node) |
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478 if not text: |
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479 return [] |
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480 last = text.index("\n\n") |
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481 l = text[:last].split('\n') |
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482 return l[3:] |
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483 |
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484 def add(self, manifest, files, desc, transaction, p1, p2, |
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485 user, date=None, extra=None): |
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486 # Convert to UTF-8 encoded bytestrings as the very first |
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487 # thing: calling any method on a localstr object will turn it |
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488 # into a str object and the cached UTF-8 string is thus lost. |
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489 user, desc = encoding.fromlocal(user), encoding.fromlocal(desc) |
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490 |
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491 user = user.strip() |
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492 # An empty username or a username with a "\n" will make the |
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493 # revision text contain two "\n\n" sequences -> corrupt |
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494 # repository since read cannot unpack the revision. |
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495 if not user: |
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496 raise error.RevlogError(_("empty username")) |
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497 if "\n" in user: |
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499 % repr(user)) | |
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500 |
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501 desc = stripdesc(desc) |
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502 |
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503 if date: |
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504 parseddate = "%d %d" % util.parsedate(date) |
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505 else: |
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506 parseddate = "%d %d" % util.makedate() |
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507 if extra: |
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508 branch = extra.get("branch") |
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509 if branch in ("default", ""): |
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510 del extra["branch"] |
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511 elif branch in (".", "null", "tip"): |
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512 raise error.RevlogError(_('the name \'%s\' is reserved') |
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513 % branch) |
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514 if extra: |
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515 extra = encodeextra(extra) |
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516 parseddate = "%s %s" % (parseddate, extra) |
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517 l = [hex(manifest), user, parseddate] + sorted(files) + ["", desc] |
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518 text = "\n".join(l) |
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519 return self.addrevision(text, transaction, len(self), p1, p2) |
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520 |
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521 def branchinfo(self, rev): |
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522 """return the branch name and open/close state of a revision |
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523 |
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524 This function exists because creating a changectx object |
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525 just to access this is costly.""" |
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526 extra = self.read(rev)[5] |
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527 return encoding.tolocal(extra.get("branch")), 'close' in extra |