mercurial/version.py
author Thomas Arendsen Hein <thomas@intevation.de>
Sun, 19 Jun 2005 14:21:38 +0100
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permissions -rw-r--r--
remember_version() only writes version if called in a Mercurial repository. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 remember_version() only writes version if called in a Mercurial repository. forget_version() resets version only if remember_version() wrote it. manifest hash: b30df9d93c233f4bf07150cc5067f294a98c16f4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFCtXFiW7P1GVgWeRoRAgkjAJ9jkwCAHf3yJyDI8R582XjNFNFeWgCZAe27 iqGPYzrRErf6gPKZcoBMsD4= =t2Bx -----END PGP SIGNATURE-----
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# Copyright (C) 2005 by Intevation GmbH
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# Author(s):
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# Thomas Arendsen Hein <thomas@intevation.de>
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#
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# This program is free software under the GNU GPL (>=v2)
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# Read the file COPYING coming with the software for details.
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"""
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Mercurial version
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"""
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import os
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import os.path
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import re
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import time
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unknown_version = 'unknown'
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remembered_version = False
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def get_version():
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    """Return version information if available."""
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    try:
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        from mercurial.__version__ import version
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    except ImportError:
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        version = unknown_version
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    return version
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def write_version(version):
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    """Overwrite version file."""
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    filename = os.path.join(os.path.dirname(__file__), '__version__.py')
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    f = open(filename, 'w')
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    f.write("# This file is auto-generated.\n")
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    f.write("version = %r\n" % version)
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    f.close()
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def remember_version():
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    """Store version information."""
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    global remembered_version
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    if os.access(".hg", os.F_OK):
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        f = os.popen("hg identify 2>/dev/null")  # use real hg installation
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        ident = f.read()[:-1]
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        if not f.close() and ident:
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            ids = ident.split(' ', 1)
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            version = ids.pop(0)
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            if version[-1] == '+':
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                version = version[:-1]
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                modified = True
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            else:
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                modified = False
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            if version.isalnum() and ids:
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                for tag in ids[0].split('/'):
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                    # is a tag is suitable as a version number?
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                    if re.match(r'^(\d+\.)+[\w.-]+$', tag):
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                        version = tag
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                        break
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            if modified:
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                version += time.strftime('+%Y%m%d')
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            remembered_version = True
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            write_version(version)
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def forget_version():
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    """Remove version information."""
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    if remembered_version:
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        write_version(unknown_version)
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