added capaxmlconverter app to convert xml into json format

cms/djangoapps/capaconverter/management/commands/convert.py

+###
+### One-off script for importing courseware form XML format
+###
+
+from django.core.management.base import BaseCommand, CommandError
+import json
+from capaconverter import CapaXMLConverter
+
+
+class Command(BaseCommand):
+    help = \
+'''Import the specified data directory into the default ModuleStore'''
+
+    def handle(self, *args, **options):
+        self.converter = CapaXMLConverter()
+        # print json.dumps(self.converter.convert_xml_file("/Users/ccp/code/mitx_all/mitx/1.xml"), indent=2)
+        print json.dumps(self.converter.convert_xml_file("/Users/ccp/code/mitx_all/data/6.002x/problems/HW3ID1.xml"), indent=2)
+        # print json.dumps(self.converter.convert_xml_file("/Users/ccp/code/mitx_all/data/6.002x/problems/multichoice.xml"), indent=2)

cms/djangoapps/capaconverter/tests.py

+#!/usr/bin/env python
+
+from django.utils import unittest
+import logging
+import os.path
+from __init__ import CapaXMLConverter
+import json
+import sys
+from lxml import etree
+
+
+class CapaXMLConverterTestCase(unittest.TestCase):
+    def setUp(self):
+        self.converter = CapaXMLConverter()
+        self.converter.logger.setLevel(logging.DEBUG)
+        self.problems_folder = os.path.join(os.path.dirname(os.path.realpath(__file__)), "problems")
+        logging.info("Testing problems from folder %s" % self.problems_folder)
+        self.problem_files = map(lambda filename: os.path.join(self.problems_folder, filename),
+                        filter(lambda filename: filename.endswith(".xml"), 
+                        os.listdir(self.problems_folder)))
+        logging.info("Found %d lon-CAPA XML files. " % len(self.problem_files))
+
+    def test_center(self):
+        xml = '<center><img src="/aa" /></center>'
+        elements = self.converter.picky_center_element_format(etree.fromstring(xml))
+        self.assertEqual(elements, [{'url': '/aa', '_tag_': 'img', 'type': 'image'}])
+
+        xml = '<center><img src="/aa" />title</center>'
+        elements = self.converter.picky_center_element_format(etree.fromstring(xml))
+        self.assertEqual(elements, [{'url': '/aa', '_tag_': 'img', 'type': 'image', 'title': 'title'}])
+
+        xml = '<center><img src="/aa" />title<input /></center>'
+        elements = self.converter.picky_center_element_format(etree.fromstring(xml))
+        self.assertEqual(elements, None)
+
+    def test_iterator(self):
+        xml = """<text>In this problem we will investigate a fun idea called "duality."
+<br />
+Consider the series circuit in the diagram shown.
+<center>
+<img src="/static/images/circuits/duality.gif" />
+</center>
+We are given device parameters \(V=$V\)V, \(R_1=$R1\Omega\), and \(R_2=$R2\Omega\).
+All of the unknown voltages and currents are labeled in associated reference
+directions.  Solve this circuit for the unknowns and enter them into
+the boxes given.
+<br />
+The value (in Volts) of \(v_1\) is: </text>"""
+        elements = list(self.converter.iterate_element(etree.fromstring(xml)))
+        self.assertEqual(7, len(elements))
+
+    def test_xmls(self):
+        for filepath in self.problem_files:
+            try:
+                out = self.converter.convert_xml_file(filepath)
+            except:
+                print "Failed to convert file %s" % filepath
+                raise
+            f = open(filepath.replace(".xml", ".json"), "w")
+            json.dump(out, f, indent=2)
+            f.close()
+
+
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file

cms/djangoapps/contentstore/management/commands/convert.py

-###
-### One-off script for importing courseware form XML format
-###
-
-from django.core.management.base import BaseCommand, CommandError
-import json
-from lxml import etree
-
-
-class CapaXMLConverter(object):
-    def convert_from_xml(self, filename):
-        out = {'scripts': [], 'contents': []}
-        temp = {'text':'', 'response':None}
-        with open(filename, "r") as f:
-            for event, element in etree.iterparse(f, events=("start", "end")):
-                if event == "start" and element.tag == "br":
-                    temp['text'] += '\n\n'
-
-                elif event == "start" and element.text:
-                    temp['text'] += element.text
-                elif event == "end" and element.tail:
-                    temp['text'] += element.tail
-
-                if event == "start":
-                    if element.tag == 'multiplechoiceresponse':
-                        temp['group'] = {'type': 'multiple_choice', 'choices': []}
-                    elif element.tag == 'truefalseresponse':
-                        temp['group'] = {'type': 'true_false', 'statements': []}
-                    elif element.tag == "choice":
-                        if temp['group']['type'] == 'multiple_choice':
-                            temp['response'] = {'type':'choice', 'text': '', 'correct': element.get('correct') == "true"}
-                        elif temp['group']['type'] == 'true_false':
-                            temp['response'] = {'type':'statement', 'text': '', 'correct': element.get('correct') == "true"}
-
-                elif event == "end":
-                    if element.tag == "endouttext":
-                        if temp['response']:
-                            temp['response']['text'] += temp['text'].strip()
-                        else:
-                            out['contents'].append({'type':'paragraph', 'text': temp['text'].strip()})
-                        temp['text'] = ''
-                    elif element.tag in ["multiplechoiceresponse", "truefalseresponse"]:
-                        out['contents'].append(temp['group'])
-                        temp['group'] = None
-                    elif element.tag == "choice":
-                        if temp['group']['type'] == 'true_false':
-                            temp['group']['statements'].append(temp['response'])
-                        elif temp['group']['type'] == 'multiple_choice':
-                            temp['group']['choices'].append(temp['response'])
-                        temp['response'] = None
-
-        # self.parse_tree(tree, out)
-        return out
-
-
-class Command(BaseCommand):
-    help = \
-'''Import the specified data directory into the default ModuleStore'''
-
-    def handle(self, *args, **options):
-        self.converter = CapaXMLConverter()
-        
-        # print json.dumps(self.converter.convert_from_xml("/Users/ccp/code/mitx_all/data/6.002x/problems/HW3ID1.xml"), indent=2)
-        print json.dumps(self.converter.convert_from_xml("/Users/ccp/code/mitx_all/data/6.002x/problems/multichoice.xml"), indent=2)

cms/envs/common.py

@@ -311,6 +311,7 @@ INSTALLED_APPS = (
     'contentstore',
     'github_sync',
     'student',  # misleading name due to sharing with lms
+    'capaconverter',
 
     # For asset pipelining
     'pipeline',

format.ref → cms/static/grammars/format.ref

-- scripts:
-  - type: 'script'
+scripts:
+- type: 'script'
   language: 'python'
   code: 'print "Hello world!"'
-- contents:
-  - type: 'text'
-    text: 'This is a sample paragraph. The linebreaks here should matter..?'
-  - type: 'linebreaks'
-    count: 2
-  - type: 'multiple_choice'
+contents:
+- type: 'text'
+  text: 'This is a sample paragraph. The linebreaks here matter.\n\n'
+- type: 'multiple_choice'
   randomize: true
   choices:
   - type: 'choice'
@@ -19,7 +17,7 @@
   - type: 'choice'
     text: 'Choice C'
     correct: true
-  - type: 'true_false'
+- type: 'true_false'
   statements:
   - type: 'statement'
     text: 'Sun revolves around Earth. '
@@ -27,12 +25,12 @@
   - type: 'statement'
     text: 'This is a true statement. '
     correct: true
-  - type: 'string'
+- type: 'string'
   answer: 'banana'
-  - type: 'numerical'
+- type: 'numerical'
   tolerance: '5%'
   answer: 6
-  - type: 'formula'
+- type: 'formula'
   answer: '-A*(RF/RS)'
   samples: 10
   tolerance: '5%'
@@ -52,7 +50,7 @@
   - type: 'variable'
     symbol: 'T'
     range: '1-3'
-  - type: 'custom'
+- type: 'custom'
   script:
   - type: 'script'
     language: 'python'