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"""
nwcPy2nwcXml.py Translates 
	FROM: nwcPythonListDictFormat (kahman's nwctxt to python converter pyNWC-a output) 
	TO: jdorocak's homegrown xml (So I can use data folding in a text editor.) :)

Usage:   nwcPy2nwcXml.py infileName  outfileName
Example: nwcPy2nwcXml.py mySong.py   mySong.xml
Author:  Joe Dorocak
License: Use this as you please. :) 
         Use with caution - I have done minimal testing. No warranty is implied. :) 
"""

class ConvertToXML():
    """
    Converts 
        FROM: nwcPythonListDictFormat (NWC Virtuoso kahman's nwctxt to python converter pyNWC-a output) 
        TO: jdorocak's homegrown xml (So I can use data folding in a text editor.) :)
    rs == resultString; il == indentationLevel; aprs(il,str) == appendToResultString(indentationLevel,strToAppend)
    data == string output of kahman's nwctxt to python converter 
    ix == index of current pythonListDict item;
    joe's xml syntax for nwctxtPy files inferred from analysis of data (i added elements named j*):

    <jNwctxtPy>
        <SongInfo count=1></SongInfo>
        <PgSetup count=1></PgSetup>
        <jFonts><Font count=12></Font></jFonts>
        <PgMargins count=1></PgMargins>
        <jStaves>
            <jStaff>
                <AddStaff count=1></AddStaff>
                <StaffProperties count=2></StaffProperties>
                <StaffInstrument count=1></StaffInstrument>
                <Clef count=n></Clef>  
                <Key count=n></Key>
                <Tempo count=n></Tempo>	
                <Note count=n></Note>	
                <Chord count=n></Chord>	
                <Bar count=n></Bar>			
            </jStaff>			
    </jStaves>
    </jNwctxtPy>
    """
    def __init__(self, indata):
        """
        data == data to be converted.  FROM: nwcPythonListDictFormat (kahman's nwctxt to python converter pyNWC-a output) 
        rs == resultString; converted data jdorocak's homegrown xml (So I can use data folding in a text editor.) :)
        """
        self.data = eval(indata)
        self.data.append(['End', {'Joe': 'End', 'Pos': 'Whatever'}])
        self.rs = ''          
		
    def toxml(self):
        self.aprs(0,'<jNwctxtPy>')


        #SongInfo
        self.aprs(1,'<SongInfo count=1>')
        ix = 0
        print len(self.data)
        for k,v in self.data[ix][1].iteritems():
            self.aprs (2,'<' + k + '>' + str(v) + '</' + k + '>')
        self.aprs (1,'</SongInfo>')

        #PgSetup
        self.aprs (1,'<PgSetup count=1>')
        ix = 1 
        for k,v in self.data[ix][1].iteritems():
            self.aprs (2,'<' + k + '>' + str(v) + '</' + k + '>'   )
        self.aprs (1,'</PgSetup>')

        #Fonts
        self.aprs (1,'<jFonts>')
        for ix in range(2,14):
            self.aprs (2,'<Font count=12>')
            for k,v in self.data[ix][1].iteritems():
                self.aprs (3,'<' + k + '>' + str(v) + '</' + k + '>'   )
            self.aprs (2,'</Font>')
        self.aprs (1,'</jFonts>')

        #PgMargins
        self.aprs (1,'<PgSetup count=1>')
        ix = 15 
        for k,v in self.data[ix][1].iteritems():
            self.aprs (2,'<' + k + '>' + str(v) + '</' + k + '>'   )
        self.aprs (1,'</PgSetup>')



        self.aprs (1,'<jStaves>')
        self.aprs (2,'<jStaff>')
        #AddStaff 
        ix = 16
        for ix in range(ix,len(self.data)-1):
            #if self.data[ix+1][0] == 'AddStaff': self.aprs (2,'<jStaff>')    #ix+1 needed to add ['End',{'Joe':'whatever'}]
            self.aprs (3,'<'+ self.data[ix][0] +'>')
            for k,v in self.data[ix][1].iteritems():
                self.aprs (4,'<' + k + '>' + str(v) + '</' + k + '>'   )
            self.aprs (3,'</'+ self.data[ix][0] +'>')
            if self.data[ix+1][0] == 'AddStaff': #ix+1 needed to add ['End',{'Joe':'whatever'}]
                self.aprs (2,'</jStaff>')   
                self.aprs (2,'<jStaff>')

        self.aprs (2,'</jStaff>')
        self.aprs (1,'</jStaves>')


        self.aprs(0,'</jNwctxtPy>')
        return self.rs

    def aprs(self, il, strToAppend):
        """aprs(il,str) == appendToResultString(indentationLevel,strToAppend)"""
        self.rs = ''.join([self.rs, il*2*' '+strToAppend+'\n'])
        #print il*2*' '+strToAppend
    
		
import sys

N_ARGS = 2  

def main(argv=None):
    if argv == None: argv=sys.argv
    args = argv[1:]  #NOTE: args[0] != argv[0] == <full path to example.py>
    if len(args) != N_ARGS or "-h" in args or "--help" in args:
        print __doc__
        sys.exit(2)

    f = open(args[0], 'r'); s = f.read(); f.close()          # get the input file into s
    cx = ConvertToXML(s)                                     # make a new converter for s 
    sXml = cx.toxml()                                        # translate s into sXml
    f = open(args[1], 'w'); f.write(sXml); f.close()    # write str(s2) into the output file
    print 'Translated ' + str(args[0]) + ' yielding ' + str(args[1])
	

if __name__ == '__main__':
    sys.exit(main())