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#
# Copyright (c) 2001, 2002 Steven Knight
#
# 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 copy
import string
import SCons.Node
import SCons.Node.FS
import SCons.Scanner
import SCons.Util
class NullProgScanner:
"""A do-nothing ProgScanner for Environments that have no LIBS."""
def scan(node, env, args = []):
return []
null_scanner = NullProgScanner()
def ProgScan(fs = SCons.Node.FS.default_fs):
"""Return a prototype Scanner instance for scanning executable
files for static-lib dependencies"""
ps = ProgScanner(scan, "ProgScan")
ps.fs = fs
return ps
class ProgScanner(SCons.Scanner.Base):
def __init__(self, *args, **kw):
apply(SCons.Scanner.Base.__init__, (self,) + args, kw)
self.hash = None
self.pathscanners = {}
def instance(self, env):
"""
Return a unique instance of a Prog scanner object for a
given environment.
"""
try:
libs = env.Dictionary('LIBS')
except KeyError:
# There are no LIBS in this environment, so just return the
# fake "scanner" instance that always returns a null list.
return null_scanner
if SCons.Util.is_String(libs):
libs = string.split(libs)
try:
dirs = tuple(SCons.Node.arg2nodes(env.Dictionary('LIBPATH'),
self.fs.Dir))
except:
dirs = ()
try:
prefix = env.Dictionary('LIBPREFIX')
except KeyError:
prefix = ''
try:
suffix = env.Dictionary('LIBSUFFIX')
except KeyError:
suffix = ''
key = (dirs, tuple(libs), prefix, suffix)
if not self.pathscanners.has_key(key):
clone = copy.copy(self)
clone.hash = key
clone.argument = [self.fs, dirs, libs, prefix, suffix] # XXX reaching into object
self.pathscanners[key] = clone
return self.pathscanners[key]
def __hash__(self):
return hash(self.hash)
def scan(node, env, args = [SCons.Node.FS.default_fs, (), [], '', '']):
"""
This scanner scans program files for static-library
dependencies. It will search the LIBPATH environment variable
for libraries specified in the LIBS variable, returning any
files it finds as dependencies.
"""
fs, libpath, libs, prefix, suffix = args
libs = map(lambda x, s=suffix, p=prefix: p + x + s, libs)
return SCons.Node.FS.find_files(libs, libpath, fs.File)
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