# MIT License
#
# Copyright The SCons Foundation
#
# 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 os
import SCons.Node
import SCons.Node.FS
import SCons.Scanner
from SCons.Util import flatten, is_String
[docs]def _subst_paths(env, paths) -> list:
"""Return a list of substituted path elements.
If *paths* is a string, it is split on the search-path separator.
Otherwise, substitution is done on string-valued list elements but
they are not split.
Note helps support behavior like pulling in the external ``CLASSPATH``
and setting it directly into ``JAVACLASSPATH``, however splitting on
``os.pathsep`` makes the interpretation system-specific (this is
warned about in the manpage entry for ``JAVACLASSPATH``).
"""
if is_String(paths):
paths = env.subst(paths)
if SCons.Util.is_String(paths):
paths = paths.split(os.pathsep)
else:
# TODO: may want to revisit splitting list-element strings if requested
paths = flatten(paths)
paths = [env.subst(path) if is_String(path) else path for path in paths]
return paths
[docs]def _collect_classes(classlist, dirname, files):
for fname in files:
if fname.endswith(".class"):
classlist.append(os.path.join(str(dirname), fname))
[docs]def scan(node, env, libpath=()) -> list:
"""Scan for files both on JAVACLASSPATH and JAVAPROCESSORPATH.
JAVACLASSPATH/JAVAPROCESSORPATH path can contain:
- Explicit paths to JAR/Zip files
- Wildcards (*)
- Directories which contain classes in an unnamed package
- Parent directories of the root package for classes in a named package
Class path entries that are neither directories nor archives (.zip
or JAR files) nor the asterisk (*) wildcard character are ignored.
"""
classpath = []
for var in ['JAVACLASSPATH', 'JAVAPROCESSORPATH']:
classpath += _subst_paths(env, env.get(var, []))
result = []
for path in classpath:
if is_String(path) and "*" in path:
# This matches more than the Java docs describe: a '*' only
# matches jar files. The filter later should trim this down.
# TODO: should we filter here? use .endswith('*') rather than "in"?
libs = env.Glob(path)
else:
libs = [path]
for lib in libs:
if os.path.isdir(str(lib)):
# grab the in-memory nodes
env.Dir(lib).walk(_collect_classes, result)
# now the on-disk ones
for root, dirs, files in os.walk(str(lib)):
_collect_classes(result, root, files)
else:
result.append(lib)
return list(filter(lambda x: os.path.splitext(str(x))[1] in [".class", ".zip", ".jar"], result))
[docs]def JavaScanner():
"""Scanner for .java files.
.. versionadded:: 4.4
"""
return SCons.Scanner.Base(scan, 'JavaScanner', skeys=['.java'])
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4: