mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
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cc87bdf8c3
Some other people might use the official Windows build of darcs, and people who use my cygwin wrapper for darcs will be compatible with this patch as long as they use the latest version of the wrapper.
126 lines
4.1 KiB
Python
126 lines
4.1 KiB
Python
#! /usr/bin/env python
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"""
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Create src/allmydata/version.py, based upon the latest darcs release tag.
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If your source tree is coming from darcs (i.e. there exists a _darcs
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directory), this tool will determine the most recent release tag, count the
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patches that have been applied since then, and compute a version number to be
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written into version.py . This version number will be available by doing:
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from allmydata import __version__
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Source trees that do not come from darcs (release tarballs, nightly tarballs)
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do not have a _darcs directory. Instead, they should have a version.py that
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was generated before the tarball was produced. In this case, this script will
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quietly exit without modifying the existing version.py .
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FYI, src/allmydata/__init__.py will attempt to import version.py and use the
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version number therein. If it cannot, it will announce a version of
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'UNKNOWN'. This should only happen if someone manages to get hold of a
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non-_darcs/ source tree.
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'release tags' are tags in the tahoe source tree that match the following
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regexp:
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^allmydata-tahoe-\d+\.\d+\.\d+\w*$
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This excludes zfec tags (which start with 'zfec '). It also excludes
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'developer convenience tags', which look like 'hoping to fix bug -warner'.
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(the original goal was to use release tags that lacked the 'allmydata-tahoe-'
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prefix, but it turns out to be more efficient to keep it in, because I can't
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get 'darcs changes --from-tag=' to accept real regexps).
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"""
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import os, sys, re
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import xml.dom.minidom
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from subprocess import Popen, PIPE
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def get_text(nodelist):
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rc = ""
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for node in nodelist:
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if node.nodeType == node.TEXT_NODE:
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rc = rc + node.data
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return rc
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VERSION_BODY = '''
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from util.version import Version
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# This is the version of this tree, as created by misc/make-version.py from
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# the Darcs patch information: the main version number is taken from the most
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# recent release tag. If some patches have been added since the last release,
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# this will have a -NN "build number" suffix. Please see
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# allmydata.util.version for a description of what the different fields mean.
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verstr = "%s"
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__version__ = Version(verstr)
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'''
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def write_version_py(verstr):
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f = open("src/allmydata/version.py", "wt")
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f.write(VERSION_BODY % (verstr,))
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f.close()
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def update():
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if not os.path.exists("_darcs") or not os.path.isdir("_darcs"):
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if os.path.exists("src/allmydata/version.py"):
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print "no _darcs/ and version.py exists, leaving it alone"
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return 0
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print "no _darcs/ but no version.py either: how did you get this tree?"
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return 0
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cmd = ["darcs", "changes", "--from-tag=^allmydata-tahoe", "--xml-output"]
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try:
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p = Popen(cmd, stdout=PIPE)
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output = p.communicate()[0]
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rc = p.returncode
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except EnvironmentError, le:
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output = "There was an environment error: %s" % (le,)
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rc = -1
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if rc != 0:
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print "unable to run 'darcs changes':"
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print output
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print "so I'm leaving version.py alone"
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return 0
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try:
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doc = xml.dom.minidom.parseString(output)
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except xml.parsers.expat.ExpatError:
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print "unable to parse darcs XML output:"
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print output
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raise
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changelog = doc.getElementsByTagName("changelog")[0]
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patches = changelog.getElementsByTagName("patch")
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count = 0
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version_re = re.compile("^TAG allmydata-tahoe-(\d+\.\d+\.\d+\w*)$")
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for patch in patches:
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name = get_text(patch.getElementsByTagName("name")[0].childNodes)
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m = version_re.match(name)
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if m:
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last_tag = m.group(1)
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last_tag = last_tag.encode("ascii")
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break
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count += 1
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else:
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print "unable to find a matching tag"
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print output
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print "so I'm leaving version.py alone"
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return 0
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if count:
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# this is an interim version
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verstr = "%s-%d" % (last_tag, count)
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else:
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# this is a release
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verstr = last_tag
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write_version_py(verstr)
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print "wrote '%s' into src/allmydata/version.py" % (verstr,)
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return 0
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if __name__ == '__main__':
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rc = update()
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sys.exit(rc)
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