annotate hgext/schemes.py @ 48663:bf424fe4f814

lfs: take lock before writing requirements With `share-safe`, we will also write file in the store, so we take the store lock before writing requirements. Differential Revision: https://phab.mercurial-scm.org/D11991
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 07 Jan 2022 17:33:27 +0100
parents ffd3e823a7e5
children 6000f5b25c9b
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1 # Copyright 2009, Alexander Solovyov <piranha@piranha.org.ua>
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2 #
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3 # This software may be used and distributed according to the terms of the
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4 # GNU General Public License version 2 or any later version.
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5
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6 """extend schemes with shortcuts to repository swarms
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7
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8 This extension allows you to specify shortcuts for parent URLs with a
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9 lot of repositories to act like a scheme, for example::
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10
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11 [schemes]
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12 py = http://code.python.org/hg/
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13
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14 After that you can use it like::
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15
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16 hg clone py://trunk/
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17
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18 Additionally there is support for some more complex schemas, for
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19 example used by Google Code::
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20
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21 [schemes]
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22 gcode = http://{1}.googlecode.com/hg/
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23
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24 The syntax is taken from Mercurial templates, and you have unlimited
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25 number of variables, starting with ``{1}`` and continuing with
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26 ``{2}``, ``{3}`` and so on. This variables will receive parts of URL
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27 supplied, split by ``/``. Anything not specified as ``{part}`` will be
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28 just appended to an URL.
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29
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30 For convenience, the extension adds these schemes by default::
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31
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32 [schemes]
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33 py = http://hg.python.org/
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34 bb = https://bitbucket.org/
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35 bb+ssh = ssh://hg@bitbucket.org/
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36 gcode = https://{1}.googlecode.com/hg/
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37 kiln = https://{1}.kilnhg.com/Repo/
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38
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39 You can override a predefined scheme by defining a new scheme with the
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40 same name.
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41 """
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42 from __future__ import absolute_import
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43
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44 import os
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45 import re
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46
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47 from mercurial.i18n import _
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48 from mercurial import (
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49 error,
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50 extensions,
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51 hg,
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52 pycompat,
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53 registrar,
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54 templater,
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55 )
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56 from mercurial.utils import (
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57 urlutil,
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58 )
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59
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60 cmdtable = {}
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61 command = registrar.command(cmdtable)
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62 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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63 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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64 # be specifying the version(s) of Mercurial they are tested with, or
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65 # leave the attribute unspecified.
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66 testedwith = b'ships-with-hg-core'
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67
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68 _partre = re.compile(br'{(\d+)\}')
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69
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70
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71 class ShortRepository(object):
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72 def __init__(self, url, scheme, templater):
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73 self.scheme = scheme
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74 self.templater = templater
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75 self.url = url
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76 try:
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77 self.parts = max(map(int, _partre.findall(self.url)))
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78 except ValueError:
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79 self.parts = 0
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80
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81 def __repr__(self):
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82 return b'<ShortRepository: %s>' % self.scheme
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83
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84 def instance(self, ui, url, create, intents=None, createopts=None):
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85 url = self.resolve(url)
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86 return hg._peerlookup(url).instance(
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87 ui, url, create, intents=intents, createopts=createopts
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88 )
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89
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90 def resolve(self, url):
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91 # Should this use the urlutil.url class, or is manual parsing better?
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92 try:
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93 url = url.split(b'://', 1)[1]
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94 except IndexError:
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95 raise error.Abort(_(b"no '://' in scheme url '%s'") % url)
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96 parts = url.split(b'/', self.parts)
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97 if len(parts) > self.parts:
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98 tail = parts[-1]
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99 parts = parts[:-1]
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100 else:
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101 tail = b''
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102 context = {b'%d' % (i + 1): v for i, v in enumerate(parts)}
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103 return b''.join(self.templater.process(self.url, context)) + tail
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104
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105
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106 def hasdriveletter(orig, path):
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107 if path:
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108 for scheme in schemes:
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109 if path.startswith(scheme + b':'):
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110 return False
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111 return orig(path)
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112
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113
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114 schemes = {
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115 b'py': b'http://hg.python.org/',
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116 b'bb': b'https://bitbucket.org/',
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117 b'bb+ssh': b'ssh://hg@bitbucket.org/',
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118 b'gcode': b'https://{1}.googlecode.com/hg/',
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119 b'kiln': b'https://{1}.kilnhg.com/Repo/',
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120 }
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121
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122
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123 def extsetup(ui):
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124 schemes.update(dict(ui.configitems(b'schemes')))
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125 t = templater.engine(templater.parse)
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126 for scheme, url in schemes.items():
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127 if (
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128 pycompat.iswindows
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129 and len(scheme) == 1
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130 and scheme.isalpha()
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131 and os.path.exists(b'%s:\\' % scheme)
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132 ):
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133 raise error.Abort(
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134 _(
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135 b'custom scheme %s:// conflicts with drive '
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136 b'letter %s:\\\n'
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137 )
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138 % (scheme, scheme.upper())
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139 )
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140 hg.schemes[scheme] = ShortRepository(url, scheme, t)
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141
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142 extensions.wrapfunction(urlutil, b'hasdriveletter', hasdriveletter)
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143
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144
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145 @command(b'debugexpandscheme', norepo=True)
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146 def expandscheme(ui, url, **opts):
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147 """given a repo path, provide the scheme-expanded path"""
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148 repo = hg._peerlookup(url)
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149 if isinstance(repo, ShortRepository):
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150 url = repo.resolve(url)
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151 ui.write(url + b'\n')