From e5b7380c874745c989d1816b8f552504f038e1bc Mon Sep 17 00:00:00 2001
From: lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>
Date: Thu, 26 Sep 2013 20:33:20 +0000
Subject: 2.0 branch for possible maintenance release

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68
---
 .../src/main/resources/rssutil.py                  | 119 +++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 sca-java-2.x/branches/2.0/modules/implementation-python-runtime/src/main/resources/rssutil.py

(limited to 'sca-java-2.x/branches/2.0/modules/implementation-python-runtime/src/main/resources/rssutil.py')

diff --git a/sca-java-2.x/branches/2.0/modules/implementation-python-runtime/src/main/resources/rssutil.py b/sca-java-2.x/branches/2.0/modules/implementation-python-runtime/src/main/resources/rssutil.py
new file mode 100644
index 0000000000..4f060d2321
--- /dev/null
+++ b/sca-java-2.x/branches/2.0/modules/implementation-python-runtime/src/main/resources/rssutil.py
@@ -0,0 +1,119 @@
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#  
+#    http://www.apache.org/licenses/LICENSE-2.0
+#    
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+
+# RSS data conversion functions
+
+from util import *
+from elemutil import *
+from xmlutil import *
+
+# Convert a list of elements to a list of values representing an RSS entry
+def entryElementsToValues(e):
+    lt = filter(selector((element, "'title")), e)
+    t = "" if isNil(lt) else elementValue(car(lt))
+    li = filter(selector((element, "'link")), e)
+    i = "" if isNil(li) else elementValue(car(li))
+    lc = filter(selector((element, "'description")), e)
+    return (t, i, elementValue(car(lc)))
+
+# Convert a list of elements to a list of values representing RSS entries
+def entriesElementsToValues(e):
+    if isNil(e):
+        return e
+    return cons(entryElementsToValues(car(e)), entriesElementsToValues(cdr(e)))
+
+# Convert a list of strings to a list of values representing an RSS entry
+def readRSSEntry(l):
+    e = readXML(l)
+    if isNil(e):
+        return ()
+    return entryElementsToValues(car(e))
+
+# Convert a list of values representy an RSS entry to a value
+def entryValue(e):
+    v = elementsToValues((caddr(e),))
+    return cons(car(e), (cadr(e), cdr(car(v))))
+
+# Return true if a list of strings represents an RSS feed
+def isRSSFeed(l):
+    if isNil(l):
+        return False
+    if car(l)[0:5] != "<?xml":
+        return False
+    return contains(car(l), "<rss")
+
+# Convert a list of strings to a list of values representing an RSS feed
+def readRSSFeed(l):
+    f = readXML(l)
+    if isNil(f):
+        return ()
+    c = filter(selector((element, "'channel")), car(f))
+    t = filter(selector((element, "'title")), car(c))
+    i = filter(selector((element, "'link")), car(c))
+    e = filter(selector((element, "'item")), car(c))
+    if isNil(e):
+        return (elementValue(car(t)), elementValue(car(i)))
+    return cons(elementValue(car(t)), cons(elementValue(car(i)), entriesElementsToValues(e)))
+
+# Convert an RSS feed containing elements to an RSS feed containing values
+def feedValuesLoop(e):
+    if (isNil(e)):
+        return e
+    return cons(entryValue(car(e)), feedValuesLoop(cdr(e)))
+
+def feedValues(e):
+    return cons(car(e), cons(cadr(e), feedValuesLoop(cddr(e))))
+
+# Convert a list of values representy an RSS entry to a list of elements
+def entryElement(l):
+    return (element, "'item",
+            (element, "'title", car(l)),
+            (element, "'link", cadr(l)),
+            (element, "'description", caddr(l)))
+
+# Convert a list of values representing RSS entries to a list of elements
+def entriesElements(l):
+    if isNil(l):
+        return l
+    return cons(entryElement(car(l)), entriesElements(cdr(l)))
+
+# Convert a list of values representing an RSS entry to an RSS entry
+def writeRSSEntry(l):
+    return writeXML((entryElement(l),), True)
+
+# Convert a list of values representing an RSS feed to an RSS feed
+def writeRSSFeed(l):
+    c = ((element, "'title", car(l)),
+            (element, "'link", cadr(l)),
+            (element, "'description", car(l)))
+    ce = c if isNil(cddr(l)) else append(c, entriesElements(cddr(l)))
+    fe = (element, "'rss", (attribute, "'version", "2.0"), append((element, "'channel"), ce))
+    return writeXML((fe,), True)
+
+# Convert an RSS entry containing a value to an RSS entry containing an item element
+def entryValuesToElements(v):
+    return cons(car(v), cons(cadr(v), valuesToElements((cons("'item", caddr(v)),))))
+
+# Convert an RSS feed containing values to an RSS feed containing elements
+def feedValuesToElementsLoop(v):
+    if isNil(v):
+        return v
+    return cons(entryValuesToElements(car(v)), feedValuesToElementsLoop(cdr(v)))
+
+def feedValuesToElements(v):
+    return cons(car(v), cons(cadr(v), feedValuesToElementsLoop(cddr(v))))
+
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