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detail_.py
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detail_.py
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# -*- coding: utf-8 -*-
"""sconstool.cxxtestgen.detail_
Implementation details for cxxtestgen tool.
"""
#
# Copyright (c) 2018-2020 by Paweł Tomulik
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
import sys
import os
import re
try:
from site_tools.util import ToolFinder, Selector
except ImportError:
from sconstool.util import ToolFinder, Selector
__all__ = ('ToolFinder',
'Selector',
'findCxxTestGen',
'findCxxTestGenPython',
'shallWorkOnPy3')
def findCxxTestGen(env):
return _cxxTestGenFinder(env)
def findCxxTestGenPython(env, cxxtestgen):
if cxxtestgen:
if shallWorkOnPy3(cxxtestgen):
_python = ToolFinder('python', name=['python3', 'python'])
else:
_python = ToolFinder('python', name=['python2', 'python'])
python = _python(env)
else:
python = None
return python
def shallWorkOnPy3(cxxtestgen):
return not _has_issue_135(cxxtestgen) and _has_py3_impl(cxxtestgen)
class _CxxTestGenFinder(ToolFinder):
_binpath = os.path.pathsep.join([
os.path.join('$CXXTESTINSTALLDIR', 'bin'),
os.path.join('$CXXTESTINSTALLDIR', 'python', 'python3', 'scripts'),
os.path.join('$CXXTESTINSTALLDIR', 'python', 'scripts')
])
@property
def priority_path(self):
# Change the default value of priority_path
return self._kw.get('priority_path', '$CXXTESTBINPATH')
@property
def strip_path(self):
# Change the default value of strip_path
return self._kw.get('strip_path', False)
def __call__(self, env):
# Put it here, so 'exists' and 'generate' should get same results
env.SetDefault(CXXTESTINSTALLDIR=env.Dir('#/cxxtest').get_abspath())
env.SetDefault(CXXTESTBINPATH=self._binpath)
ret = ToolFinder.__call__(self, env)
if isinstance(ret, str):
if sys.platform == 'win32' and ret.lower().endswith('.bat'):
# Ironically, on Windows we shall avoid 'cxxtestgen.bat'.
# It's broken and doesn't work with SCons in most cases.
py = ret[:-4]
else:
py = ret
if self._is_cxxtestgen_py(py):
ret = py
return ret
def _is_small_file(self, fname):
if not os.path.isfile(fname):
return False
try:
si = os.stat(fname)
except IOError:
return False
# avoid large files; limiting to 256 standard lines should be enough
return (si.st_size <= 256*82)
def _is_cxxtestgen_py(self, fname):
if not self._is_small_file(fname):
return False
try:
with open(fname, 'r') as f:
content = f.read()
except IOError:
return False
return bool(re.search(r'\bcxxtest(?:gen)?\.main\s*\(', content, re.M))
_cxxTestGenFinder = _CxxTestGenFinder('cxxtestgen')
def _has_issue_135(script):
# See https://github.com/CxxTest/cxxtest/pull/135
with open(script, 'r') as f:
content = f.read()
regex = r'os\.path\.sep\.join\(\[currdir,\s*\'\.\.\',\s*python3\]\)'
return bool(re.search(regex, content, re.M))
def _has_py3_impl(script):
script = os.path.realpath(script) # resolve symlinks
scriptdir = os.path.dirname(script)
outerdir = os.path.dirname(scriptdir)
regex = re.compile(r'^\s*from\s+\.\s+import\s+__release__\s*$', re.M)
for parts in [(scriptdir, 'cxxtest', 'cxxtestgen.py'),
(scriptdir, 'python3', 'cxxtest', 'cxxtestgen.py'),
(outerdir, 'cxxtest', 'cxxtestgen.py'),
(outerdir, 'python3', 'cxxtest', 'cxxtestgen.py'),
(outerdir, 'python', 'cxxtest', 'cxxtestgen.py'),
(outerdir, 'python', 'python3', 'cxxtest', 'cxxtestgen.py')]:
fname = os.path.join(*parts)
try:
with open(fname, 'r') as f:
code = f.read()
except IOError:
pass
else:
if regex.search(code, re.M):
return True
return False
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4: