mercurial/version.py
author mpm@selenic.com
Wed, 29 Jun 2005 11:05:09 -0800
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child 1977 7eb694a1c1af
permissions -rw-r--r--
Add a CONTRIBUTORS file -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Add a CONTRIBUTORS file Compiled by Rafael Villar Burke <pachi@mmn-arquitectos.com> manifest hash: 20acfff6abdd47408d8262d15b19099c33b85151 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCwvDlywK+sNU5EO8RAuujAJ4wYp+deMoUO54W8qBAFXKY3IHGPACeJNpO x1rRm1amHz3V2RAfk/Rh9ZM= =8t0h -----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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import util
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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(version=None):
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    """Store version information."""
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    global remembered_version
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    if not version and os.path.isdir(".hg"):
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        f = os.popen("hg identify 2> %s" % util.nulldev)  # 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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    if version:
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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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