72 lines
1.9 KiB
Python
72 lines
1.9 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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"""
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BitBake Utility Functions
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA.
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This file is part of the BitBake build tools.
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"""
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digits = "0123456789"
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ascii_letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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import re
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def explode_version(s):
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r = []
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alpha_regexp = re.compile('^([a-zA-Z]+)(.*)$')
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numeric_regexp = re.compile('^(\d+)(.*)$')
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while (s != ''):
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if s[0] in digits:
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m = numeric_regexp.match(s)
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r.append(int(m.group(1)))
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s = m.group(2)
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continue
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if s[0] in ascii_letters:
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m = alpha_regexp.match(s)
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r.append(m.group(1))
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s = m.group(2)
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continue
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s = s[1:]
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return r
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def vercmp_part(a, b):
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va = explode_version(a)
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vb = explode_version(b)
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while True:
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if va == []:
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ca = None
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else:
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ca = va.pop(0)
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if vb == []:
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cb = None
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else:
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cb = vb.pop(0)
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if ca == None and cb == None:
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return 0
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if ca > cb:
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return 1
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if ca < cb:
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return -1
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def vercmp(ta, tb):
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(va, ra) = ta
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(vb, rb) = tb
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r = vercmp_part(va, vb)
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if (r == 0):
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r = vercmp_part(ra, rb)
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return r
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