def test_get_expression_extra_parens_2(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'gpl-2.0 OR bsd-simplified'
def test_get_expression_does_not_fail_on_empty(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = 'SPDX-License-Identifier: '
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression == None
def test_get_expression_with_parens_and_with(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) AND MIT) */'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'gpl-2.0 WITH linux-syscall-exception-gpl AND mit'
def get_spdx_expression(text, expression_symbols=None):
"""
Return a matched license expression string or None by matching the
``text`` as an SPDX license expression.
Use the ``expression_symbols`` mapping of {lowered key: LicenseSymbol} if
provided. Otherwise use the standard SPDX license symbols.
This is used to handle cases of mixed standard SPDX and non-standard SPDX-
like symbols used for instance in some package manifests.
"""
from licensedcode.cache import get_spdx_symbols
from licensedcode.cache import get_unknown_spdx_symbol
licensing = Licensing()
if not expression_symbols:
expression_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
_prefix, exp_text = prepare_text(text)
expression = get_expression(
text=exp_text,
licensing=licensing,
expression_symbols=expression_symbols,
unknown_symbol=unknown_symbol,
)
if expression is None:
return
return expression.render()
def test_get_expression_with_empty_expression_should_return_unknown(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier:'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert None == expression
def test_get_expression_license_ref(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '/* SPDX-License-Identifier: LicenseRef-ABC */'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'unknown-spdx'
def test_get_expression_simple(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: BSD-3-Clause'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'bsd-new'
def test_get_expression_with_plus(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: GPL-2.0+'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert 'gpl-2.0-plus' == expression.render()
def test_get_expression_with_extra_parens(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: (GPL-2.0+ OR MIT)'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'gpl-2.0-plus OR mit'
def test_get_expression_quoted(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '''LIST "SPDX-License-Identifier: GPL-2.0"'''
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'gpl-2.0'
def test_get_expression_multiple_or(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: (BSD-3-Clause OR EPL-1.0 OR Apache-2.0 OR MIT)'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'bsd-new OR epl-1.0 OR apache-2.0 OR mit'
def test_get_expression_with_empty_expression2_should_return_unknown(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = ''
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression == None
def test_get_expression_without_and_should_not_return_unknown(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression != unknown_symbol
def test_get_expression_simple_with(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */'
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
assert expression.render() == 'lgpl-2.0-plus WITH linux-syscall-exception-gpl'
def test__reparse_invalid_expression_with_non_balanced_parens_should_return_a_proper_expression(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '(GPL-2.0+ and (BSD-2-Clause '
expression = _reparse_invalid_expression(line_text, licensing, spdx_symbols, unknown_symbol)
expected = '(gpl-2.0-plus AND bsd-simplified) AND unknown-spdx'
assert expression.render() == expected
def spdx_id_match(idx, query_run, text):
"""
Return one LicenseMatch by matching the `text` as an SPDX license expression
using the `query_run` positions and `idx` index for support.
"""
from licensedcode.cache import get_spdx_symbols
from licensedcode.cache import get_unknown_spdx_symbol
if TRACE:
logger_debug('spdx_id_match: start:', 'text:', text, 'query_run:',
query_run)
licensing = Licensing()
symbols_by_spdx = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
_prefix, exp_text = prepare_text(text)
expression = get_expression(exp_text, licensing, symbols_by_spdx,
unknown_symbol)
if expression is None:
return
expression_str = expression.render()
match_len = len(query_run)
match_start = query_run.start
matched_tokens = query_run.tokens
# build synthetic rule
# TODO: ensure that all the SPDX license keys are known symbols
rule = SpdxRule(
license_expression=expression_str,
# FIXME: for now we are putting the original query text as a
# rule text: this is likely incorrect when it comes to properly
# computing the known and unknowns and high and lows for this rule.
# Alternatively we could use the expression string, padded with
# spdx-license-identifier: this may be wrong too, if the line was
# not padded originally with this tag
stored_text=text,
length=match_len)
# build match from parsed expression
# collect match start and end: e.g. the whole text
qspan = Span(range(match_start, query_run.end + 1))
# we use the query side to build the ispans
ispan = Span(range(0, match_len))
len_legalese = idx.len_legalese
hispan = Span(p for p, t in enumerate(matched_tokens) if t < len_legalese)
match = LicenseMatch(rule=rule,
qspan=qspan,
ispan=ispan,
hispan=hispan,
query_run_start=match_start,
matcher=MATCH_SPDX_ID,
query=query_run.query)
return match
def test__reparse_invalid_expression_without_or_should_return_a_proper_expression(self):
# this is a uboot-style legacy expression without OR
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = 'GPL-2.0+ BSD-2-Clause'
expression = _reparse_invalid_expression(line_text, licensing, spdx_symbols, unknown_symbol)
expected = 'gpl-2.0-plus OR bsd-simplified'
assert expression.render() == expected
def test__reparse_invalid_expression_with_improper_keyword_should_return_a_proper_expression(
self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: or GPL-2.0+ BSD-2-Clause '
expression = _reparse_invalid_expression(line_text, licensing,
spdx_symbols, unknown_symbol)
expected = '(gpl-2.0-plus AND bsd-simplified) AND unknown-spdx'
assert expected == expression.render()
def test__parse_expression_with_empty_expression_should_raise_ExpressionError(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier:'
try:
_parse_expression(line_text, licensing, spdx_symbols, unknown_symbol)
self.fail('ExpressionError not raised')
except ExpressionError:
pass
def test__parse_expression_without_and_raise_exception(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = '* SPDX-License-Identifier: GPL-2.0+ BSD-2-Clause'
try:
_parse_expression(line_text, licensing, spdx_symbols, unknown_symbol)
self.fail('exception should be raised')
except:
pass
def test_get_expression_without_lid(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = ('EPL-2.0 OR Apache-2.0 OR '
'GPL-2.0 WITH Classpath-exception-2.0 OR '
'GPL-2.0')
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
expected = 'epl-2.0 OR apache-2.0 OR gpl-2.0 WITH classpath-exception-2.0 OR gpl-2.0'
assert expression.render() == expected
expected = ['epl-2.0', u'apache-2.0', u'gpl-2.0', u'classpath-exception-2.0', u'gpl-2.0']
assert licensing.license_keys(expression, unique=False) == expected
assert all(s.wrapped for s in licensing.license_symbols(expression, decompose=True))
def test_get_expression_complex(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = ('* SPDX-License-Identifier: '
'EPL-2.0 OR aPache-2.0 OR '
'GPL-2.0 WITH classpath-exception-2.0 OR '
'GPL-2.0')
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
expected = 'epl-2.0 OR apache-2.0 OR gpl-2.0 WITH classpath-exception-2.0 OR gpl-2.0'
assert expected == expression.render()
expected = ['epl-2.0', u'apache-2.0', u'gpl-2.0', u'classpath-exception-2.0']
assert expected == licensing.license_keys(expression, unique=True)
assert all(s.wrapped for s in licensing.license_symbols(expression, decompose=True))
def test_get_expression_complex_with_unknown_symbols_and_refs(self):
licensing = Licensing()
spdx_symbols = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
line_text = ('* SPDX-License-Identifier: '
'EPL-2.0 OR Apache-2.0 '
'OR GPL-2.0 WITH Classpath-exception-2.0 '
'OR LicenseRef-GPL-2.0 WITH Assembly-exception')
expression = get_expression(line_text, licensing, spdx_symbols, unknown_symbol)
expected = 'epl-2.0 OR apache-2.0 OR gpl-2.0 WITH classpath-exception-2.0 OR unknown-spdx WITH unknown-spdx'
assert expression.render() == expected
expected = ['epl-2.0', 'apache-2.0', 'gpl-2.0', 'classpath-exception-2.0', 'unknown-spdx', 'unknown-spdx']
assert licensing.license_keys(expression, unique=False) == expected
assert all(s.wrapped for s in licensing.license_symbols(expression, decompose=True))
def test_get_expression_works_for_legacy_deprecated_old_spdx_symbols(self):
exp_by_old = {
'eCos-2.0': 'gpl-2.0-plus WITH ecos-exception-2.0',
'GPL-2.0-with-autoconf-exception': 'gpl-2.0 WITH autoconf-exception-2.0',
'GPL-2.0-with-bison-exception': 'gpl-2.0 WITH bison-exception-2.2',
'GPL-2.0-with-classpath-exception': 'gpl-2.0 WITH classpath-exception-2.0',
'GPL-2.0-with-font-exception': 'gpl-2.0 WITH font-exception-gpl',
'GPL-2.0-with-GCC-exception': 'gpl-2.0 WITH gcc-linking-exception-2.0',
'GPL-3.0-with-autoconf-exception': 'gpl-3.0 WITH autoconf-exception-3.0',
'GPL-3.0-with-GCC-exception': 'gpl-3.0 WITH gcc-exception-3.1',
'wxWindows': 'lgpl-2.0-plus WITH wxwindows-exception-3.1',
}
licensing = Licensing()
symbols_by_spdx = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
for test, expected in exp_by_old.items():
result = get_expression(
test, licensing, symbols_by_spdx, unknown_symbol).render()
assert result == expected
def test_get_unknown_spdx_symbol(self):
assert 'unknown-spdx' == cache.get_unknown_spdx_symbol().key
def test_get_unknown_spdx_symbol_from_defined_db(self):
test_dir = self.get_test_loc('spdx/db-unknown')
from licensedcode.models import load_licenses
test_licenses = load_licenses(test_dir)
assert 'unknown-spdx' == cache.get_unknown_spdx_symbol(_test_licenses=test_licenses).key
def spdx_id_match(idx, query_run, text):
"""
Return one LicenseMatch by matching the `text` as an SPDX license expression
using the `query_run` positions and `idx` index for support.
"""
from licensedcode.cache import get_spdx_symbols
from licensedcode.cache import get_unknown_spdx_symbol
if TRACE:
logger_debug('spdx_id_match: start:', 'text:', text, 'query_run:',
query_run)
licensing = Licensing()
symbols_by_spdx = get_spdx_symbols()
unknown_symbol = get_unknown_spdx_symbol()
expression = get_expression(text, licensing, symbols_by_spdx,
unknown_symbol)
expression_str = expression.render()
if TRACE:
logger_debug('spdx_id_match: expression:', repr(expression_str))
# how many known or unknown-spdx symbols occurence do we have?
known_syms = 0
unknown_syms = 0
for sym in licensing.license_symbols(expression,
unique=False,
decompose=True):
if sym == unknown_symbol:
unknown_syms += 1
else:
known_syms += 1
match_len = len(query_run)
match_start = query_run.start
matched_tokens = query_run.tokens
# are we starting with SPDX-License-Identifier or not? if yes: fix start
cleaned = clean_text(text).lower()
# FIXME: dnl and rem may not be known tokens hence the pos will be wrong
if cleaned.startswith((
'list',
'dnl',
'rem',
)):
match_start += 1
match_len -= 1
matched_tokens[1:]
# build synthetic rule
# TODO: ensure that all the SPDX license keys are known symbols
rule = SpdxRule(
license_expression=expression_str,
# FIXME: for now we are putting the original query text as a
# rule text: this is likely incorrect when it comes to properly
# computing the known and unknowns and high and lows for this rule.
# alternatively we could use the expression string, padded with
# spdx-license-identifier: this may be wrong too, if the line was
# not padded originally with this tag
stored_text=text,
length=match_len)
# build match from parsed expression
# collect match start and end: e.g. the whole text
qspan = Span(range(match_start, query_run.end + 1))
# we use the query side to build the ispans
ispan = Span(range(0, match_len))
len_junk = idx.len_junk
hispan = Span(p for p, t in enumerate(matched_tokens) if t >= len_junk)
match = LicenseMatch(rule=rule,
qspan=qspan,
ispan=ispan,
hispan=hispan,
query_run_start=match_start,
matcher=MATCH_SPDX_ID,
query=query_run.query)
if TRACE:
logger_debug('spdx_id_match: match found:', match)
return match
