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a57de1ac9d
In addition to moving this functionality to oe.license, makes the string preparation more picky before passing it off to the ast compilation. This ensures that LICENSE entries like 'GPL/BSD' are seen as invalid (due to the presence of the unsupported '/'). (From OE-Core rev: 20d4068045c76e9dc2aff0c152dd02d6a109c9dd) Signed-off-by: Christopher Larson <kergoth@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
33 lines
1.1 KiB
Python
33 lines
1.1 KiB
Python
# vi:sts=4:sw=4:et
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"""Code for parsing OpenEmbedded license strings"""
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import ast
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import re
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class InvalidLicense(StandardError):
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def __init__(self, license):
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self.license = license
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StandardError.__init__(self)
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def __str__(self):
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return "invalid license '%s'" % self.license
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license_operator = re.compile('([&|() ])')
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license_pattern = re.compile('[a-zA-Z0-9.+_\-]+$')
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class LicenseVisitor(ast.NodeVisitor):
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"""Syntax tree visitor which can accept OpenEmbedded license strings"""
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def visit_string(self, licensestr):
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new_elements = []
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elements = filter(lambda x: x.strip(), license_operator.split(licensestr))
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for pos, element in enumerate(elements):
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if license_pattern.match(element):
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if pos > 0 and license_pattern.match(elements[pos-1]):
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new_elements.append('&')
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element = '"' + element + '"'
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elif not license_operator.match(element):
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raise InvalidLicense(element)
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new_elements.append(element)
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self.visit(ast.parse(' '.join(new_elements)))
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