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"""SCons.Tool.swig
Tool-specific initialization for swig.
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
"""
#
# __COPYRIGHT__
#
# 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.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import SCons.Action
import SCons.Defaults
import SCons.Tool
import SCons.Util
from SCons.Scanner import Scanner
import os
import re
SwigAction = SCons.Action.Action('$SWIGCOM', '$SWIGCOMSTR')
def swigSuffixEmitter(env, source):
if '-c++' in SCons.Util.CLVar(env.subst("$SWIGFLAGS")):
return '$SWIGCXXFILESUFFIX'
else:
return '$SWIGCFILESUFFIX'
_reSwig = re.compile(r"%include\s+(\S+)")
def recurse(path, searchPath):
global _reSwig
f = open(path)
try: contents = f.read()
finally: f.close()
found = []
# Better code for when we drop Python 1.5.2.
#for m in _reSwig.finditer(contents):
# fname = m.group(1)
for fname in _reSwig.findall(contents):
for dpath in searchPath:
absPath = os.path.join(dpath, fname)
if os.path.isfile(absPath):
found.append(absPath)
break
# Equivalent code for when we drop Python 1.5.2.
#for f in [f for f in found if os.path.splitext(f)[1] == ".i"]:
# found += recurse(f, searchPath)
for f in filter(lambda f: os.path.splitext(f)[1] == ".i", found):
found = found + recurse(f, searchPath)
return found
def _scanSwig(node, env, path):
import sys
r = recurse(str(node), [os.path.abspath(os.path.dirname(str(node))), os.path.abspath(os.path.join("include", "swig"))])
return r
def _swigEmitter(target, source, env):
for src in source:
src = str(src)
mname = None
if "-python" in SCons.Util.CLVar(env.subst("$SWIGFLAGS")):
f = open(src)
try:
for l in f.readlines():
m = re.match("%module (.+)", l)
if m:
mname = m.group(1)
finally:
f.close()
if mname is not None:
target.append(mname + ".py")
return (target, source)
def generate(env):
"""Add Builders and construction variables for swig to an Environment."""
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
c_file.suffix['.i'] = swigSuffixEmitter
cxx_file.suffix['.i'] = swigSuffixEmitter
c_file.add_action('.i', SwigAction)
c_file.add_emitter('.i', _swigEmitter)
cxx_file.add_action('.i', SwigAction)
cxx_file.add_emitter('.i', _swigEmitter)
env['SWIG'] = 'swig'
env['SWIGFLAGS'] = SCons.Util.CLVar('')
env['SWIGCFILESUFFIX'] = '_wrap$CFILESUFFIX'
env['SWIGCXXFILESUFFIX'] = '_wrap$CXXFILESUFFIX'
env['SWIGCOM'] = '$SWIG $SWIGFLAGS -o $TARGET $SOURCES'
env.Append(SCANNERS=Scanner(function=_scanSwig, skeys=[".i"]))
def exists(env):
return env.Detect(['swig'])
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