Example documentation update

[senf.git] / Examples / Sniffer / site_scons / senfutil.py

diff --git a/Examples/Sniffer/site_scons/senfutil.py b/Examples/Sniffer/site_scons/senfutil.py
new file mode 100644 (file)
index 0000000..212819a
--- /dev/null
+++ b/Examples/Sniffer/site_scons/senfutil.py
@@ -0,0 +1,22 @@
+import sys, os
+
+def findsenf(sysdirs = ('/usr/local/lib/senf','/usr/lib/senf'),
+             subdirs = ('', 'senf', 'Senf', 'SENF')):
+    from os.path import join, sep, exists, normpath
+    from itertools import starmap, product, chain
+
+    def joinpaths(*p): return starmap(join, product(*p))
+    def existing(l):   return (e for e in l if exists(e))
+    def ancestors(d): p = d.split(sep); return (join(p[0]+sep,*p[1:i]) for i in range(len(p),0,-1))
+    def butfirst(l):
+        i = iter(l); i.next()
+        for e in i : yield e
+
+    try: return normpath(existing(butfirst(joinpaths(
+                    chain(ancestors(os.getcwd()),sysdirs),
+                    subdirs,('site_scons/senfutil.py',)))).next())
+    except StopIteration: raise ImportError, 'senfutil not found'
+
+__file__ = findsenf(); del findsenf
+sys.path.append(os.path.dirname(__file__))
+execfile(__file__, locals(), globals())