Mercurial > hg
annotate mercurial/statichttprepo.py @ 45434:5523e3e1bc71
statichttprepo: use LockUnavailable() instead of Abort() for lock (API)
If we try to get a lock on statichttprepo, we get `error.Abort()` instead of
subclass of `error.LockError()`. The callers which catches `error.LockError`
fails to catch this case as the correct error is not raised.
Raising `error.LockUnavaible()` is same as what is done for wlock also.
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Thu, 10 Sep 2020 13:37:35 +0530 |
parents | 9f70512ae2cf |
children | 5135b393884b |
rev | line source |
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1101 | 1 # statichttprepo.py - simple http repository class for mercurial |
2 # | |
3 # This provides read-only repo access to repositories exported via static http | |
4 # | |
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5 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
1101 | 6 # |
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7 # This software may be used and distributed according to the terms of the |
10263 | 8 # GNU General Public License version 2 or any later version. |
1101 | 9 |
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10 from __future__ import absolute_import |
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11 |
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12 import errno |
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13 |
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14 from .i18n import _ |
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15 from . import ( |
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16 branchmap, |
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17 changelog, |
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18 error, |
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19 localrepo, |
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20 manifest, |
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21 namespaces, |
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22 pathutil, |
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23 pycompat, |
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24 url, |
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25 util, |
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26 vfs as vfsmod, |
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27 ) |
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28 |
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29 urlerr = util.urlerr |
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30 urlreq = util.urlreq |
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31 |
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32 |
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33 class httprangereader(object): |
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34 def __init__(self, url, opener): |
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35 # we assume opener has HTTPRangeHandler |
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36 self.url = url |
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37 self.pos = 0 |
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38 self.opener = opener |
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39 self.name = url |
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40 |
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41 def __enter__(self): |
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42 return self |
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43 |
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44 def __exit__(self, exc_type, exc_value, traceback): |
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45 self.close() |
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46 |
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47 def seek(self, pos): |
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48 self.pos = pos |
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49 |
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50 def read(self, bytes=None): |
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51 req = urlreq.request(pycompat.strurl(self.url)) |
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52 end = b'' |
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53 if bytes: |
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54 end = self.pos + bytes - 1 |
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55 if self.pos or end: |
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56 req.add_header('Range', 'bytes=%d-%s' % (self.pos, end)) |
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57 |
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58 try: |
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59 f = self.opener.open(req) |
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60 data = f.read() |
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61 code = f.code |
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62 except urlerr.httperror as inst: |
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63 num = inst.code == 404 and errno.ENOENT or None |
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64 raise IOError(num, inst) |
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65 except urlerr.urlerror as inst: |
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66 raise IOError(None, inst.reason) |
1101 | 67 |
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68 if code == 200: |
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69 # HTTPRangeHandler does nothing if remote does not support |
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70 # Range headers and returns the full entity. Let's slice it. |
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71 if bytes: |
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72 data = data[self.pos : self.pos + bytes] |
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73 else: |
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74 data = data[self.pos :] |
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75 elif bytes: |
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76 data = data[:bytes] |
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77 self.pos += len(data) |
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78 return data |
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79 |
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80 def readlines(self): |
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81 return self.read().splitlines(True) |
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82 |
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83 def __iter__(self): |
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84 return iter(self.readlines()) |
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85 |
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86 def close(self): |
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87 pass |
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88 |
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89 |
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90 # _RangeError and _HTTPRangeHandler were originally in byterange.py, |
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91 # which was itself extracted from urlgrabber. See the last version of |
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92 # byterange.py from history if you need more information. |
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93 class _RangeError(IOError): |
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94 """Error raised when an unsatisfiable range is requested.""" |
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95 |
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96 |
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97 class _HTTPRangeHandler(urlreq.basehandler): |
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98 """Handler that enables HTTP Range headers. |
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99 |
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100 This was extremely simple. The Range header is a HTTP feature to |
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101 begin with so all this class does is tell urllib2 that the |
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102 "206 Partial Content" response from the HTTP server is what we |
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103 expected. |
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104 """ |
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105 |
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106 def http_error_206(self, req, fp, code, msg, hdrs): |
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107 # 206 Partial Content Response |
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108 r = urlreq.addinfourl(fp, hdrs, req.get_full_url()) |
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109 r.code = code |
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110 r.msg = msg |
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111 return r |
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112 |
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113 def http_error_416(self, req, fp, code, msg, hdrs): |
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114 # HTTP's Range Not Satisfiable error |
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115 raise _RangeError(b'Requested Range Not Satisfiable') |
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116 |
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117 |
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118 def build_opener(ui, authinfo): |
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119 # urllib cannot handle URLs with embedded user or passwd |
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120 urlopener = url.opener(ui, authinfo) |
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121 urlopener.add_handler(_HTTPRangeHandler()) |
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122 |
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123 class statichttpvfs(vfsmod.abstractvfs): |
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124 def __init__(self, base): |
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125 self.base = base |
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126 self.options = {} |
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127 |
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128 def __call__(self, path, mode=b'r', *args, **kw): |
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129 if mode not in (b'r', b'rb'): |
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130 raise IOError(b'Permission denied') |
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131 f = b"/".join((self.base, urlreq.quote(path))) |
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132 return httprangereader(f, urlopener) |
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133 |
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134 def join(self, path): |
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135 if path: |
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136 return pathutil.join(self.base, path) |
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137 else: |
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138 return self.base |
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139 |
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140 return statichttpvfs |
1101 | 141 |
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142 |
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143 class statichttppeer(localrepo.localpeer): |
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144 def local(self): |
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145 return None |
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146 |
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147 def canpush(self): |
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148 return False |
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149 |
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150 |
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151 class statichttprepository( |
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152 localrepo.localrepository, localrepo.revlogfilestorage |
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153 ): |
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154 supported = localrepo.localrepository._basesupported |
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155 |
1101 | 156 def __init__(self, ui, path): |
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157 self._url = path |
1101 | 158 self.ui = ui |
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159 |
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160 self.root = path |
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161 u = util.url(path.rstrip(b'/') + b"/.hg") |
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162 self.path, authinfo = u.authinfo() |
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163 |
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164 vfsclass = build_opener(ui, authinfo) |
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165 self.vfs = vfsclass(self.path) |
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166 self.cachevfs = vfsclass(self.vfs.join(b'cache')) |
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167 self._phasedefaults = [] |
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168 |
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169 self.names = namespaces.namespaces() |
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170 self.filtername = None |
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171 self._extrafilterid = None |
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172 |
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173 try: |
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174 requirements = set(self.vfs.read(b'requires').splitlines()) |
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175 except IOError as inst: |
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176 if inst.errno != errno.ENOENT: |
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177 raise |
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178 requirements = set() |
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179 |
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180 # check if it is a non-empty old-style repository |
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181 try: |
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182 fp = self.vfs(b"00changelog.i") |
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183 fp.read(1) |
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184 fp.close() |
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185 except IOError as inst: |
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186 if inst.errno != errno.ENOENT: |
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187 raise |
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188 # we do not care about empty old-style repositories here |
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189 msg = _(b"'%s' does not appear to be an hg repository") % path |
7637 | 190 raise error.RepoError(msg) |
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191 |
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192 supportedrequirements = localrepo.gathersupportedrequirements(ui) |
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193 localrepo.ensurerequirementsrecognized( |
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194 requirements, supportedrequirements |
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195 ) |
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196 localrepo.ensurerequirementscompatible(ui, requirements) |
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197 |
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198 # setup store |
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199 self.store = localrepo.makestore(requirements, self.path, vfsclass) |
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200 self.spath = self.store.path |
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201 self.svfs = self.store.opener |
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202 self.sjoin = self.store.join |
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203 self._filecache = {} |
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204 self.requirements = requirements |
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205 |
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206 rootmanifest = manifest.manifestrevlog(self.svfs) |
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207 self.manifestlog = manifest.manifestlog( |
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208 self.svfs, self, rootmanifest, self.narrowmatch() |
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209 ) |
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210 self.changelog = changelog.changelog(self.svfs) |
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211 self._tags = None |
1101 | 212 self.nodetagscache = None |
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213 self._branchcaches = branchmap.BranchMapCache() |
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214 self._revbranchcache = None |
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215 self.encodepats = None |
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216 self.decodepats = None |
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217 self._transref = None |
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218 |
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219 def _restrictcapabilities(self, caps): |
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220 caps = super(statichttprepository, self)._restrictcapabilities(caps) |
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221 return caps.difference([b"pushkey"]) |
1101 | 222 |
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223 def url(self): |
7211 | 224 return self._url |
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225 |
1101 | 226 def local(self): |
227 return False | |
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228 |
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229 def peer(self): |
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230 return statichttppeer(self) |
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231 |
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statichttprepo: implement wlock() (issue5613)
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232 def wlock(self, wait=True): |
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233 raise error.LockUnavailable( |
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234 0, |
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235 _(b'lock not available'), |
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236 b'lock', |
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237 _(b'cannot lock static-http repository'), |
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238 ) |
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239 |
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do not pretend to lock static-http repositories (issue994)
Martin Geisler <mg@daimi.au.dk>
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240 def lock(self, wait=True): |
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241 raise error.LockUnavailable( |
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242 0, |
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243 _(b'lock not available'), |
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244 b'lock', |
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245 _(b'cannot lock static-http repository'), |
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246 ) |
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247 |
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statichttprepo: do not try to write caches
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
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248 def _writecaches(self): |
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249 pass # statichttprepository are read only |
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250 |
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251 |
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hg: allow extra arguments to be passed to repo creation (API)
Gregory Szorc <gregory.szorc@gmail.com>
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252 def instance(ui, path, create, intents=None, createopts=None): |
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clean up hg.py: move repo constructor code into each repo module
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253 if create: |
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254 raise error.Abort(_(b'cannot create new static-http repository')) |
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Removed deprecated hg:// and old-http:// protocols (issue406)
Thomas Arendsen Hein <thomas@intevation.de>
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255 return statichttprepository(ui, path[7:]) |