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75 lines
1.7 KiB
Python
75 lines
1.7 KiB
Python
class PackageError(Exception):
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"""base class for all package related errors"""
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def __init__(self, msg):
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Exception.__init__(self)
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self.msg = msg
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class PackageQuery:
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"""abstract base class for all package types"""
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def read(self):
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raise NotImplementedError
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def name(self):
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raise NotImplementedError
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def version(self):
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raise NotImplementedError
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def release(self):
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raise NotImplementedError
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def epoch(self):
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raise NotImplementedError
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def arch(self):
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raise NotImplementedError
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def description(self):
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raise NotImplementedError
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def provides(self):
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raise NotImplementedError
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def requires(self):
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raise NotImplementedError
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def getTag(self):
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raise NotImplementedError
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def vercmp(self, pkgq):
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raise NotImplementedError
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@staticmethod
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def query(filename):
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f = open(filename, 'rb')
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magic = f.read(7)
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f.seek(0)
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pkgq = None
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if magic[:4] == '\xed\xab\xee\xdb':
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import rpmquery
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pkgq = rpmquery.RpmQuery(f)
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elif magic == '!<arch>':
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import debquery
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pkgq = debquery.DebQuery(f)
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else:
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raise PackageError('unsupported package type. magic: \'%s\' (%s)' % (magic, filename))
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pkgq.read()
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f.close()
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return pkgq
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if __name__ == '__main__':
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import sys
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try:
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pkgq = PackageQuery.query(sys.argv[1])
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except PackageError, e:
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print e.msg
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sys.exit(2)
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print pkgq.name()
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print pkgq.version()
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print pkgq.release()
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print pkgq.description()
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print '##########'
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print '\n'.join(pkgq.provides())
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print '##########'
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print '\n'.join(pkgq.requires())
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