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- Committer: stevenbird
- Date: 2008-02-19 23:12:46 UTC
- Revision ID: svn-v3-trunk0:2b9c9e99-6f39-0410-b283-7f802c844ae2:trunk:515
Propagated "problem" -> "exercise" nomenclature change.
added
removed
www/apps/tutorial/__init__.py
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# Date: 25/1/2008
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# Tutorial application.
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# Displays tutorial content with editable problems, allowing students to test
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# and submit their solutions to problems and have them auto-tested.
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# Displays tutorial content with editable exercises, allowing students to test
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# and submit their solutions to exercises and have them auto-tested.
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# URL syntax
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# All path segments are optional (omitted path segments will show menus).
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% (cgi.escape(subject), cgi.escape(worksheetname)))
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# Write each element
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problemid = 0
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exerciseid = 0
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for node in worksheetdom.childNodes:
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problemid = present_worksheet_node(req, node, problemid)
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exerciseid = present_worksheet_node(req, node, exerciseid)
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req.write("</div>\n") # tutorialbody
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def present_worksheet_node(req, node, problemid):
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def present_worksheet_node(req, node, exerciseid):
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"""Given a node of a worksheet XML document, writes it out to the
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request. This recursively searches for "problem" elements and handles
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those specially (presenting their XML problem spec and input box), and
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request. This recursively searches for "exercise" elements and handles
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those specially (presenting their XML exercise spec and input box), and
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just dumps the other elements as regular HTML.
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problemid is the ID to use for the first problem.
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Returns the new problemid after all the problems have been written
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(since we need unique IDs for each problem).
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exerciseid is the ID to use for the first exercise.
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Returns the new exerciseid after all the exercises have been written
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(since we need unique IDs for each exercise).
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"""
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if node.nodeType == node.ELEMENT_NODE:
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if node.tagName == "problem":
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present_problem(req, node.getAttribute("src"), problemid)
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problemid += 1
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if node.tagName == "exercise":
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present_exercise(req, node.getAttribute("src"), exerciseid)
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exerciseid += 1
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else:
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# Some other element. Write out its head and foot, and recurse.
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req.write("<" + node.tagName)
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req.write(" " + ' '.join(attrs))
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req.write(">")
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for childnode in node.childNodes:
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problemid = present_worksheet_node(req, childnode, problemid)
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exerciseid = present_worksheet_node(req, childnode, exerciseid)
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req.write("</" + node.tagName + ">")
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else:
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# No need to recurse, so just print this node's contents
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req.write(node.toxml())
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return problemid
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return exerciseid
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def innerXML(elem):
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"""Given an element, returns its children as XML strings concatenated
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return data.strip()
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def present_problem(req, problemsrc, problemid):
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"""Open a problem file, and write out the problem to the request in HTML.
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problemsrc: "src" of the problem file. A path relative to the top-level
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problems base directory, as configured in conf.
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def present_exercise(req, exercisesrc, exerciseid):
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"""Open a exercise file, and write out the exercise to the request in HTML.
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exercisesrc: "src" of the exercise file. A path relative to the top-level
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exercises base directory, as configured in conf.
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"""
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req.write('<div class="tuteproblem" id="problem%d">\n'
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% problemid)
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req.write('<div class="exercise" id="exercise%d">\n'
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% exerciseid)
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# First normalise the path
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problemsrc = os.path.normpath(problemsrc)
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exercisesrc = os.path.normpath(exercisesrc)
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# Now if it begins with ".." or separator, then it's illegal
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if problemsrc.startswith("..") or problemsrc.startswith(os.sep):
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problemfile = None
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if exercisesrc.startswith("..") or exercisesrc.startswith(os.sep):
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exercisefile = None
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else:
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problemfile = os.path.join(conf.problems_base, problemsrc)
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exercisefile = os.path.join(conf.exercises_base, exercisesrc)
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try:
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problemfile = open(problemfile)
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except (TypeError, IOError): # TypeError if problemfile == None
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exercisefile = open(exercisefile)
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except (TypeError, IOError): # TypeError if exercisefile == None
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req.write("<p><b>Server Error</b>: "
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+ "Problem file could not be opened.</p>\n")
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+ "Exercise file could not be opened.</p>\n")
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req.write("</div>\n")
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return
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# Read problem file and present the problem
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# Read exercise file and present the exercise
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# Note: We do not use the testing framework because it does a lot more
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# work than we need. We just need to get the problem name and a few other
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# work than we need. We just need to get the exercise name and a few other
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# fields from the XML.
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problemdom = minidom.parse(problemfile)
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problemfile.close()
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problemdom = problemdom.documentElement
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if problemdom.tagName != "problem":
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exercisedom = minidom.parse(exercisefile)
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exercisefile.close()
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exercisedom = exercisedom.documentElement
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if exercisedom.tagName != "exercise":
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# TODO: Nicer error message, to help authors
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req.throw_error(req.HTTP_INTERNAL_SERVER_ERROR)
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problemname = problemdom.getAttribute("name")
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rows = problemdom.getAttribute("rows")
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exercisename = exercisedom.getAttribute("name")
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rows = exercisedom.getAttribute("rows")
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if not rows:
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rows = "12"
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# Look for some other fields we need, which are elements:
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# - desc
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# - partial
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problemdesc = None
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problempartial= ""
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for elem in problemdom.childNodes:
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exercisedesc = None
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exercisepartial= ""
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for elem in exercisedom.childNodes:
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if elem.nodeType == elem.ELEMENT_NODE:
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if elem.tagName == "desc":
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problemdesc = innerXML(elem).strip()
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exercisedesc = innerXML(elem).strip()
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if elem.tagName == "partial":
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problempartial= getTextData(elem) + '\n'
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exercisepartial= getTextData(elem) + '\n'
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# Print this problem out to HTML
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req.write("<p><b>Exercise:</b> %s</p>\n" % problemname)
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if problemdesc is not None:
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req.write("<div>%s</div>\n" % problemdesc)
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req.write('<textarea class="problembox" cols="80" rows="%s">%s</textarea>'
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% (rows, problempartial))
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filename = cgi.escape(cjson.encode(problemsrc), quote=True)
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req.write("""\n<div class="problembuttons">
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# Print this exercise out to HTML
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req.write("<p><b>Exercise:</b> %s</p>\n" % exercisename)
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if exercisedesc is not None:
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req.write("<div>%s</div>\n" % exercisedesc)
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req.write('<textarea class="exercisebox" cols="80" rows="%s">%s</textarea>'
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% (rows, exercisepartial))
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filename = cgi.escape(cjson.encode(exercisesrc), quote=True)
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req.write("""\n<div class="exercisebuttons">
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<input type="button" value="Run"
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onclick="runproblem("problem%d", %s)" />
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onclick="runexercise("exercise%d", %s)" />
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<input type="button" value="Submit"
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onclick="submitproblem("problem%d", %s)" />
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onclick="submitexercise("exercise%d", %s)" />
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</div>
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<div class="testoutput">
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</div>
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""" % (problemid, filename, problemid, filename))
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""" % (exerciseid, filename, exerciseid, filename))
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req.write("</div>\n")
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