Implement the Depends() method.

1 files changed, 40 insertions, 0 deletions

diff --git a/src/engine/SCons/Util.py b/src/engine/SCons/Util.py
new file mode 100644
index 0000000..0167260
--- /dev/null
+++ b/src/engine/SCons/Util.py
@@ -0,0 +1,40 @@
+"""SCons.Util
+
+Various utility functions go here.
+
+"""
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+
+import types
+import string
+import SCons.Node.FS
+
+def scons_str2nodes(arg, fs=SCons.Node.FS.default_fs):
+    """This function converts a string or list into a list of Node instances.
+    It follows the rules outlined in the SCons design document by accepting
+    any of the following inputs:
+	- A single string containing names separated by spaces. These will be
+	  split apart at the spaces.
+	- A single Node instance,
+	- A list containingg either strings or Node instances. Any strings
+	  in the list are not split at spaces.
+    In all cases, the function returns a list of Node instances."""
+
+    narg = arg
+    if type(arg) is types.StringType:
+	narg = string.split(arg)
+    elif type(arg) is not types.ListType:
+	narg = [arg]
+
+    nodes = []
+    for v in narg:
+	if type(v) is types.StringType:
+	    nodes.append(fs.File(v))
+	elif issubclass(v.__class__, SCons.Node.Node):
+	    nodes.append(v)
+	else:
+	    raise TypeError
+
+    return nodes