1 files changed, 25 insertions, 0 deletions
diff --git a/tools/build/src/util/regex.py b/tools/build/src/util/regex.py
new file mode 100644
index 000000000..29e26ecf4
--- /dev/null
+++ b/tools/build/src/util/regex.py
@@ -0,0 +1,25 @@
+#  (C) Copyright David Abrahams 2001. Permission to copy, use, modify, sell and
+#  distribute this software is granted provided this copyright notice appears in
+#  all copies. This software is provided "as is" without express or implied
+#  warranty, and with no claim as to its suitability for any purpose.
+
+import re
+
+def transform (list, pattern, indices = [1]):
+    """ Matches all elements of 'list' agains the 'pattern' 
+        and returns a list of the elements indicated by indices of 
+        all successfull matches. If 'indices' is omitted returns
+        a list of first paranthethised groups of all successfull
+        matches.
+    """
+    result = []
+
+    for e in list:
+        m = re.match (pattern, e)
+
+        if m:
+            for i in indices:
+                result.append (m.group (i))
+
+    return result
+