6 files changed, 279 insertions, 0 deletions
diff --git a/src/scons/Sig/.aeignore b/src/scons/Sig/.aeignore
new file mode 100644
index 0000000..43fe851
--- /dev/null
+++ b/src/scons/Sig/.aeignore
@@ -0,0 +1,4 @@
+*,D
+*.pyc
+.*.swp
+.consign
diff --git a/src/scons/Sig/MD5.py b/src/scons/Sig/MD5.py
new file mode 100644
index 0000000..36e4230
--- /dev/null
+++ b/src/scons/Sig/MD5.py
@@ -0,0 +1,70 @@
+"""scons.Sig.MD5
+
+The MD5 signature package for the scons software construction
+utility.
+
+"""
+
+__revision__ = "Sig/MD5.py __REVISION__ __DATE__ __DEVELOPER__"
+
+import md5
+import string
+
+
+
+def hexdigest(s):
+    """Return a signature as a string of hex characters.
+    """
+    # NOTE:  This routine is a method in the Python 2.0 interface
+    # of the native md5 module, but we want scons to operate all
+    # the way back to at least Python 1.5.2, which doesn't have it.
+    h = string.hexdigits
+    r = ''
+    for c in s:
+	i = ord(c)
+	r = r + h[(i >> 4) & 0xF] + h[i & 0xF]
+    return r
+
+
+
+def _init():
+    pass	# XXX
+
+def _end():
+    pass	# XXX
+
+def current(obj, sig):
+    """Return whether a given object is up-to-date with the
+    specified signature.
+    """
+    return obj.signature() == sig
+
+def set():
+    pass	# XXX
+
+def invalidate():
+    pass	# XXX
+
+def collect(*objects):
+    """Collect signatures from a list of objects, returning the
+    aggregate signature of the list.
+    """
+    if len(objects) == 1:
+	sig = objects[0].signature()
+    else:
+	contents = string.join(map(lambda o: o.signature(), objects), ', ')
+	sig = signature(contents)
+#    if debug:
+#	pass
+    return sig
+
+def signature(contents):
+    """Generate a signature for a byte string.
+    """
+    return hexdigest(md5.new(contents).digest())
+
+def cmdsig():
+    pass	# XXX
+
+def srcsig():
+    pass	# XXX
diff --git a/src/scons/Sig/MD5Tests.py b/src/scons/Sig/MD5Tests.py
new file mode 100644
index 0000000..ac43f1b
--- /dev/null
+++ b/src/scons/Sig/MD5Tests.py
@@ -0,0 +1,76 @@
+__revision__ = "Sig/MD5Tests.py __REVISION__ __DATE__ __DEVELOPER__"
+
+import sys
+import unittest
+
+import scons.Sig.MD5
+
+
+
+class my_obj:
+    """A dummy object class that satisfies the interface
+    requirements of the MD5 class.
+    """
+
+    def __init__(self, value = ""):
+	self.value = value
+	self.sig = None
+
+    def signature(self):
+	if not self.sig:
+	    self.sig = scons.Sig.MD5.signature(self.value)
+	return self.sig
+
+    def current(self, sig):
+	return scons.Sig.MD5.current(self, sig)
+
+
+
+class MD5TestCase(unittest.TestCase):
+
+    def test__init(self):
+	pass	# XXX
+
+    def test__end(self):
+	pass	# XXX
+
+    def test_current(self):
+	"""Test the ability to decide if an object is up-to-date
+	with different signature values.
+	"""
+	o111 = my_obj(value = '111')
+	assert not o111.current(scons.Sig.MD5.signature('110'))
+	assert     o111.current(scons.Sig.MD5.signature('111'))
+	assert not o111.current(scons.Sig.MD5.signature('112'))
+
+    def test_set(self):
+	pass	# XXX
+
+    def test_invalidate(self):
+	pass	# XXX
+
+    def test_collect(self):
+	"""Test the ability to collect a sequence of object signatures
+	into a new signature value.
+	"""
+	o1 = my_obj(value = '111')
+	o2 = my_obj(value = '222')
+	o3 = my_obj(value = '333')
+	assert '698d51a19d8a121ce581499d7b701668' == scons.Sig.MD5.collect(o1)
+	assert '8980c988edc2c78cc43ccb718c06efd5' == scons.Sig.MD5.collect(o1, o2)
+	assert '53fd88c84ff8a285eb6e0a687e55b8c7' == scons.Sig.MD5.collect(o1, o2, o3)
+
+    def test_signature(self):
+	pass	# XXX
+
+    def test_cmdsig(self):
+	pass	# XXX
+
+    def test_srcsig(self):
+	pass	# XXX
+
+
+if __name__ == "__main__":
+    suite = unittest.makeSuite(MD5TestCase, 'test_')
+    if not unittest.TextTestRunner().run(suite).wasSuccessful():
+	sys.exit(1)
diff --git a/src/scons/Sig/TimeStamp.py b/src/scons/Sig/TimeStamp.py
new file mode 100644
index 0000000..cab44bf
--- /dev/null
+++ b/src/scons/Sig/TimeStamp.py
@@ -0,0 +1,49 @@
+"""scons.Sig.TimeStamp
+
+The TimeStamp signature package for the scons software construction
+utility.
+
+"""
+
+__revision__ = "Sig/TimeStamp.py __REVISION__ __DATE__ __DEVELOPER__"
+
+def _init():
+    pass	# XXX
+
+def _end():
+    pass	# XXX
+
+def current(obj, sig):
+    """Return whether the object's timestamp is up-to-date.
+    """
+    return obj.signature() >= sig
+
+def set():
+    pass	# XXX
+
+def invalidate():
+    pass	# XXX
+
+def collect(*objects):
+    """Collect timestamps from a list of objects, returning
+    the most-recent timestamp from the list.
+    """
+    r = 0
+    for obj in objects:
+	s = obj.signature()
+	if s > r:
+	    r = s
+    return r
+
+def signature(contents):
+    """Generate a timestamp.
+    """
+    pass	# XXX
+#    return md5.new(contents).hexdigest()	# 2.0
+    return hexdigest(md5.new(contents).digest())
+
+def cmdsig():
+    pass	# XXX
+
+def srcsig():
+    pass	# XXX
diff --git a/src/scons/Sig/TimeStampTests.py b/src/scons/Sig/TimeStampTests.py
new file mode 100644
index 0000000..aa61af8
--- /dev/null
+++ b/src/scons/Sig/TimeStampTests.py
@@ -0,0 +1,73 @@
+__revision__ = "Sig/TimeStampTests.py __REVISION__ __DATE__ __DEVELOPER__"
+
+import sys
+import unittest
+
+import scons.Sig.TimeStamp
+
+
+
+class my_obj:
+    """A dummy object class that satisfies the interface
+    requirements of the TimeStamp class.
+    """
+
+    def __init__(self, value = ""):
+	self.value = value
+
+    def signature(self):
+	return self.value
+
+
+
+class TimeStampTestCase(unittest.TestCase):
+
+    def test__init(self):
+	pass	# XXX
+
+    def test__init(self):
+	pass	# XXX
+
+    def test__end(self):
+	pass	# XXX
+
+    def test_current(self):
+	"""Test the ability to decide if an object is up-to-date
+	with different timestamp values.
+	"""
+	o1 = my_obj(value = 111)
+	assert scons.Sig.TimeStamp.current(o1, 110)
+	assert scons.Sig.TimeStamp.current(o1, 111)
+	assert not scons.Sig.TimeStamp.current(o1, 112)
+
+    def test_set(self):
+	pass	# XXX
+
+    def test_invalidate(self):
+	pass	# XXX
+
+    def test_collect(self):
+	"""Test the ability to collect a sequence of object timestamps
+	into a new timestamp value.
+	"""
+	o1 = my_obj(value = 111)
+	o2 = my_obj(value = 222)
+	o3 = my_obj(value = 333)
+	assert 111 == scons.Sig.TimeStamp.collect(o1)
+	assert 222 == scons.Sig.TimeStamp.collect(o1, o2)
+	assert 333 == scons.Sig.TimeStamp.collect(o1, o2, o3)
+
+    def test_signature(self):
+	pass	# XXX
+
+    def test_cmdsig(self):
+	pass	# XXX
+
+    def test_srcsig(self):
+	pass	# XXX
+
+
+if __name__ == "__main__":
+    suite = unittest.makeSuite(TimeStampTestCase, 'test_')
+    if not unittest.TextTestRunner().run(suite).wasSuccessful():
+	sys.exit(1)
diff --git a/src/scons/Sig/__init__.py b/src/scons/Sig/__init__.py
new file mode 100644
index 0000000..411a94b
--- /dev/null
+++ b/src/scons/Sig/__init__.py
@@ -0,0 +1,7 @@
+"""scons.Sig
+
+The Signature package for the scons software construction utility.
+
+"""
+
+__revision__ = "Sig/__init__.py __REVISION__ __DATE__ __DEVELOPER__"