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b7f0d2a103
The introduction of the new URL parsing code has created a startup time regression. This is mainly due to the use of url.hasscheme() in the ui class. It ends up importing many libraries that the url module requires. This fix helps marginally, but if we can get rid of the urllib import in the URL parser all together, startup time will go back to normal. perfstartup time before the URL refactoring (707e4b1e8064): ! wall 0.050692 comb 0.000000 user 0.000000 sys 0.000000 (best of 100) current startup time (9ad1dce9e7f4): ! wall 0.070685 comb 0.000000 user 0.000000 sys 0.000000 (best of 100) after this change: ! wall 0.064667 comb 0.000000 user 0.000000 sys 0.000000 (best of 100)
99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
# Copyright 2009, Alexander Solovyov <piranha@piranha.org.ua>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""extend schemes with shortcuts to repository swarms
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This extension allows you to specify shortcuts for parent URLs with a
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lot of repositories to act like a scheme, for example::
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[schemes]
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py = http://code.python.org/hg/
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After that you can use it like::
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hg clone py://trunk/
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Additionally there is support for some more complex schemas, for
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example used by Google Code::
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[schemes]
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gcode = http://{1}.googlecode.com/hg/
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The syntax is taken from Mercurial templates, and you have unlimited
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number of variables, starting with ``{1}`` and continuing with
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``{2}``, ``{3}`` and so on. This variables will receive parts of URL
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supplied, split by ``/``. Anything not specified as ``{part}`` will be
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just appended to an URL.
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For convenience, the extension adds these schemes by default::
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[schemes]
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py = http://hg.python.org/
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bb = https://bitbucket.org/
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bb+ssh = ssh://hg@bitbucket.org/
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gcode = https://{1}.googlecode.com/hg/
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kiln = https://{1}.kilnhg.com/Repo/
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You can override a predefined scheme by defining a new scheme with the
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same name.
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"""
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import os, re
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from mercurial import extensions, hg, templater, util
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from mercurial.i18n import _
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class ShortRepository(object):
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def __init__(self, url, scheme, templater):
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self.scheme = scheme
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self.templater = templater
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self.url = url
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try:
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self.parts = max(map(int, re.findall(r'\{(\d+)\}', self.url)))
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except ValueError:
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self.parts = 0
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def __repr__(self):
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return '<ShortRepository: %s>' % self.scheme
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def instance(self, ui, url, create):
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# Should this use urlmod.url(), or is manual parsing better?
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url = url.split('://', 1)[1]
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parts = url.split('/', self.parts)
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if len(parts) > self.parts:
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tail = parts[-1]
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parts = parts[:-1]
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else:
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tail = ''
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context = dict((str(i + 1), v) for i, v in enumerate(parts))
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url = ''.join(self.templater.process(self.url, context)) + tail
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return hg._lookup(url).instance(ui, url, create)
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def hasdriveletter(orig, path):
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for scheme in schemes:
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if path.startswith(scheme + ':'):
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return False
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return orig(path)
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schemes = {
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'py': 'http://hg.python.org/',
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'bb': 'https://bitbucket.org/',
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'bb+ssh': 'ssh://hg@bitbucket.org/',
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'gcode': 'https://{1}.googlecode.com/hg/',
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'kiln': 'https://{1}.kilnhg.com/Repo/'
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}
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def extsetup(ui):
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schemes.update(dict(ui.configitems('schemes')))
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t = templater.engine(lambda x: x)
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for scheme, url in schemes.items():
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if (os.name == 'nt' and len(scheme) == 1 and scheme.isalpha()
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and os.path.exists('%s:\\' % scheme)):
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raise util.Abort(_('custom scheme %s:// conflicts with drive '
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'letter %s:\\\n') % (scheme, scheme.upper()))
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hg.schemes[scheme] = ShortRepository(url, scheme, t)
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extensions.wrapfunction(util, 'hasdriveletter', hasdriveletter)
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