import libxml2


def Eval(ctx,xp):
    for p in xp:
        if p:    
            print "Searching for ",p
            nodes = ctx.xpointerEval(p)
            print "Found:\n",nodes,"\n"
            if p.find("range") >=0:            
                if p.find("-point")>=0:
                    for tup in nodes:
                        print "'" + tup[0].get_content().replace(' ','X') + "'" + "\n"
                else:
		    for result in nodes:
                        for tup in result:
                            print "'" + tup[0].get_content().replace(' ','X') + "'" + "\n"

def loadXML(XMLFile,QueryFile):
    doc=libxml2.parseFile(XMLFile)
    root=doc.getRootElement()
    ctx=root.xpointerNewContext(doc,None)
    doc.validateDocument(ctx)
    xp = []
    file = open(QueryFile,"r")
    line = file.readline()
    while line:
        #print line
        xp.append(line[:-1])
        line = file.readline()
    file.close()
    return ctx,xp

#Testing:
print "Running tests to check the string-range case for xpointerEval().\nSpaces in the returned nodes are replaced by X's to see the exact number of characters.\n"

print "Loading xpointer queries from file 'tstXpointers' on xml 'm10035.cnxml'\n"
ctx,xp = loadXML('m10035.cnxml',"tstXpointers")
Eval(ctx,xp)

print "Loading xpointer queries from file 'strpoint' on xml 'str'\n"
ctx,xp = loadXML('../../test/XPath/docs/str','../../test/XPath/xptr/strpoint')
Eval(ctx,xp)

print "Loading xpointer queries from file 'strrange' on xml 'str'\n"
ctx,xp = loadXML('../../test/XPath/docs/str','../../test/XPath/xptr/strrange')
Eval(ctx,xp)

print "Loading xpointer queries from file 'strrange2' on xml 'str'\n"
ctx,xp = loadXML('../../test/XPath/docs/str','../../test/XPath/xptr/strrange2')
Eval(ctx,xp)

print "Loading xpointer queries from file 'strrange3' on xml 'str'\n"
ctx,xp = loadXML('../../test/XPath/docs/str','../../test/XPath/xptr/strrange3')
Eval(ctx,xp)

#Below tests don't work, since the xpointers use id(), and the document has no DTD to validate against

#print "Loading xpointer queries from file 'vidbase' on xml 'chapters'\n"
#ctx,xp = loadXML('../test/XPath/docs/chapters','../test/XPath/xptr/vidbase')
#ctx,xp = loadXML('../test/XPath/docs/chapters','vidbase2')
#node = ctx.xpointerEval('xpointer(/1)')
#print node[0]
#Eval(ctx,xp)

#print "Loading xpointer queries from file 'chaptersrange' on xml 'chapters'\n"
#ctx,xp = loadXML('../test/XPath/docs/chapters','../test/XPath/xptr/chaptersrange')
#Eval(ctx,xp)