Mercurial > hg
annotate mercurial/commandserver.py @ 16719:e7bf09acd410
localrepo: add branchtip() method for faster single-branch lookups
For the PyPy repo with 744 branches and 843 branch heads, this brings
hg log -r default over NFS from:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
3249 0 1.3222 1.3222 <open>
3244 0 0.6211 0.6211 <method 'close' of 'file' objects>
3243 0 0.0800 0.0800 <method 'read' of 'file' objects>
3241 0 0.0660 0.0660 <method 'seek' of 'file' objects>
3905 0 0.0476 0.0476 <zlib.decompress>
3281 0 2.6756 0.0472 mercurial.changelog:182(read)
+3281 0 2.5256 0.0453 +mercurial.revlog:881(revision)
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3241 0 2.2464 0.0456 mercurial.revlog:818(_loadchunk)
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+3241 0 0.0765 0.0765 +<method 'read' of 'file' objects>
+3241 0 0.0660 0.0660 +<method 'seek' of 'file' objects>
+3241 0 1.4209 0.0135 +mercurial.store:374(__call__)
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3281 0 2.5256 0.0453 mercurial.revlog:881(revision)
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+3281 0 0.0040 0.0040 +<mercurial.mpatch.patches>
13682 0 0.0479 0.0248 <method 'decode' of 'str' objects>
+7418 0 0.0228 0.0076 +encodings.utf_8:15(decode)
+1 0 0.0003 0.0000 +encodings:71(search_function)
3248 0 1.3995 0.0246 mercurial.scmutil:218(__call__)
+3248 0 1.3222 1.3222 +<open>
+3248 0 0.0235 0.0184 +os.path:80(split)
+3248 0 0.0084 0.0068 +mercurial.scmutil:92(__call__)
Time: real 2.750 secs (user 0.680+0.000 sys 0.360+0.000)
down to:
CallCount Recursive Total(ms) Inline(ms) module:lineno(function)
55 31 0.0197 0.0163 <__import__>
+1 0 0.0006 0.0002 +mercurial.context:8(<module>)
+1 0 0.0042 0.0001 +mercurial.revlog:12(<module>)
+1 0 0.0002 0.0001 +mercurial.match:8(<module>)
+1 0 0.0003 0.0001 +mercurial.dirstate:7(<module>)
+1 0 0.0057 0.0001 +mercurial.changelog:8(<module>)
1 0 0.0117 0.0032 mercurial.localrepo:525(_readbranchcache)
+844 0 0.0015 0.0015 +<binascii.unhexlify>
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+843 0 0.0045 0.0009 +mercurial.encoding:61(tolocal)
+843 0 0.0004 0.0004 +<method 'setdefault' of 'dict' objects>
+1 0 0.0003 0.0003 +<method 'close' of 'file' objects>
3 0 0.0029 0.0029 <method 'read' of 'file' objects>
9 0 0.0018 0.0018 <open>
990 0 0.0017 0.0017 <binascii.unhexlify>
53 0 0.0016 0.0016 mercurial.demandimport:43(__init__)
862 0 0.0015 0.0015 <_codecs.utf_8_decode>
862 0 0.0037 0.0014 <method 'decode' of 'str' objects>
+862 0 0.0023 0.0008 +encodings.utf_8:15(decode)
981 0 0.0011 0.0011 <method 'split' of 'str' objects>
861 0 0.0046 0.0009 mercurial.encoding:61(tolocal)
+861 0 0.0037 0.0014 +<method 'decode' of 'str' objects>
862 0 0.0023 0.0008 encodings.utf_8:15(decode)
+862 0 0.0015 0.0015 +<_codecs.utf_8_decode>
4 0 0.0008 0.0008 <method 'close' of 'file' objects>
179 154 0.0202 0.0004 mercurial.demandimport:83(__getattribute__)
+36 11 0.0199 0.0003 +mercurial.demandimport:55(_load)
+72 0 0.0001 0.0001 +mercurial.demandimport:83(__getattribute__)
+36 0 0.0000 0.0000 +<getattr>
1 0 0.0015 0.0004 mercurial.tags:148(_readtagcache)
Time: real 0.060 secs (user 0.030+0.000 sys 0.010+0.000)
author | Brodie Rao <brodie@sf.io> |
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date | Sun, 13 May 2012 14:04:04 +0200 |
parents | e34106fa0dc3 |
children | e95ec38f86b0 |
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1 # commandserver.py - communicate with Mercurial's API over a pipe |
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2 # |
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3 # Copyright 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 |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from i18n import _ |
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9 import struct |
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10 import sys, os |
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11 import dispatch, encoding, util |
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12 |
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13 logfile = None |
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14 |
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15 def log(*args): |
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16 if not logfile: |
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17 return |
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18 |
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19 for a in args: |
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20 logfile.write(str(a)) |
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21 |
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22 logfile.flush() |
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23 |
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24 class channeledoutput(object): |
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25 """ |
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26 Write data from in_ to out in the following format: |
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27 |
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28 data length (unsigned int), |
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29 data |
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30 """ |
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31 def __init__(self, in_, out, channel): |
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32 self.in_ = in_ |
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33 self.out = out |
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34 self.channel = channel |
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35 |
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36 def write(self, data): |
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37 if not data: |
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38 return |
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39 self.out.write(struct.pack('>cI', self.channel, len(data))) |
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40 self.out.write(data) |
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41 self.out.flush() |
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42 |
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43 def __getattr__(self, attr): |
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44 if attr in ('isatty', 'fileno'): |
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45 raise AttributeError, attr |
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46 return getattr(self.in_, attr) |
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47 |
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48 class channeledinput(object): |
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49 """ |
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50 Read data from in_. |
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51 |
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52 Requests for input are written to out in the following format: |
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53 channel identifier - 'I' for plain input, 'L' line based (1 byte) |
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54 how many bytes to send at most (unsigned int), |
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55 |
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56 The client replies with: |
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57 data length (unsigned int), 0 meaning EOF |
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58 data |
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59 """ |
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60 |
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61 maxchunksize = 4 * 1024 |
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62 |
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63 def __init__(self, in_, out, channel): |
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64 self.in_ = in_ |
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65 self.out = out |
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66 self.channel = channel |
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67 |
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68 def read(self, size=-1): |
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69 if size < 0: |
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70 # if we need to consume all the clients input, ask for 4k chunks |
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71 # so the pipe doesn't fill up risking a deadlock |
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72 size = self.maxchunksize |
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73 s = self._read(size, self.channel) |
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74 buf = s |
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75 while s: |
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76 s = self._read(size, self.channel) |
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77 buf += s |
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78 |
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79 return buf |
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80 else: |
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81 return self._read(size, self.channel) |
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82 |
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83 def _read(self, size, channel): |
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84 if not size: |
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85 return '' |
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86 assert size > 0 |
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87 |
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88 # tell the client we need at most size bytes |
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89 self.out.write(struct.pack('>cI', channel, size)) |
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90 self.out.flush() |
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91 |
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92 length = self.in_.read(4) |
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93 length = struct.unpack('>I', length)[0] |
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94 if not length: |
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95 return '' |
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96 else: |
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97 return self.in_.read(length) |
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98 |
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99 def readline(self, size=-1): |
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100 if size < 0: |
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101 size = self.maxchunksize |
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102 s = self._read(size, 'L') |
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103 buf = s |
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104 # keep asking for more until there's either no more or |
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105 # we got a full line |
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106 while s and s[-1] != '\n': |
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107 s = self._read(size, 'L') |
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108 buf += s |
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109 |
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110 return buf |
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111 else: |
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112 return self._read(size, 'L') |
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113 |
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114 def __iter__(self): |
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115 return self |
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116 |
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117 def next(self): |
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118 l = self.readline() |
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119 if not l: |
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120 raise StopIteration |
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121 return l |
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122 |
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123 def __getattr__(self, attr): |
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124 if attr in ('isatty', 'fileno'): |
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125 raise AttributeError, attr |
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126 return getattr(self.in_, attr) |
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127 |
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128 class server(object): |
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129 """ |
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130 Listens for commands on stdin, runs them and writes the output on a channel |
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131 based stream to stdout. |
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132 """ |
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133 def __init__(self, ui, repo, mode): |
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134 self.cwd = os.getcwd() |
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135 |
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136 logpath = ui.config("cmdserver", "log", None) |
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137 if logpath: |
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138 global logfile |
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139 if logpath == '-': |
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140 # write log on a special 'd'ebug channel |
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141 logfile = channeledoutput(sys.stdout, sys.stdout, 'd') |
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142 else: |
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143 logfile = open(logpath, 'a') |
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144 |
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146 # up with its local configuration | |
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147 self.ui = repo.baseui |
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148 self.repo = repo |
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149 self.repoui = repo.ui |
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150 |
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151 if mode == 'pipe': |
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152 self.cerr = channeledoutput(sys.stderr, sys.stdout, 'e') |
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153 self.cout = channeledoutput(sys.stdout, sys.stdout, 'o') |
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154 self.cin = channeledinput(sys.stdin, sys.stdout, 'I') |
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155 self.cresult = channeledoutput(sys.stdout, sys.stdout, 'r') |
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156 |
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157 self.client = sys.stdin |
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158 else: |
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159 raise util.Abort(_('unknown mode %s') % mode) |
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160 |
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161 def _read(self, size): |
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162 if not size: |
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163 return '' |
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164 |
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165 data = self.client.read(size) |
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166 |
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167 # is the other end closed? |
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168 if not data: |
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169 raise EOFError |
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170 |
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171 return data |
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172 |
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173 def runcommand(self): |
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174 """ reads a list of \0 terminated arguments, executes |
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175 and writes the return code to the result channel """ |
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176 |
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177 length = struct.unpack('>I', self._read(4))[0] |
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178 if not length: |
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179 args = [] |
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180 else: |
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181 args = self._read(length).split('\0') |
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182 |
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183 # copy the uis so changes (e.g. --config or --verbose) don't |
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184 # persist between requests |
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185 copiedui = self.ui.copy() |
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186 self.repo.baseui = copiedui |
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187 self.repo.ui = self.repo.dirstate._ui = self.repoui.copy() |
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188 self.repo.invalidate() |
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189 self.repo.invalidatedirstate() |
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190 |
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191 req = dispatch.request(args[:], copiedui, self.repo, self.cin, |
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192 self.cout, self.cerr) |
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193 |
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194 ret = dispatch.dispatch(req) or 0 # might return None |
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195 |
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196 # restore old cwd |
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197 if '--cwd' in args: |
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198 os.chdir(self.cwd) |
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199 |
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200 self.cresult.write(struct.pack('>i', int(ret))) |
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201 |
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202 def getencoding(self): |
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203 """ writes the current encoding to the result channel """ |
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204 self.cresult.write(encoding.encoding) |
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205 |
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206 def serveone(self): |
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207 cmd = self.client.readline()[:-1] |
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208 if cmd: |
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209 handler = self.capabilities.get(cmd) |
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210 if handler: |
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211 handler(self) |
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212 else: |
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213 # clients are expected to check what commands are supported by |
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214 # looking at the servers capabilities |
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215 raise util.Abort(_('unknown command %s') % cmd) |
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216 |
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217 return cmd != '' |
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218 |
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219 capabilities = {'runcommand' : runcommand, |
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220 'getencoding' : getencoding} |
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221 |
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222 def serve(self): |
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223 hellomsg = 'capabilities: ' + ' '.join(self.capabilities.keys()) |
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224 hellomsg += '\n' |
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225 hellomsg += 'encoding: ' + encoding.encoding |
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226 |
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227 # write the hello msg in -one- chunk |
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228 self.cout.write(hellomsg) |
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229 |
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230 try: |
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231 while self.serveone(): |
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232 pass |
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233 except EOFError: |
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234 # we'll get here if the client disconnected while we were reading |
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235 # its request |
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236 return 1 |
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237 |
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238 return 0 |