pptx-export-notes.py

#############################################################################
#############################################################################
###                                                                       ###
###        pptx notes exporter v1.0 copyright Eric Jang 2012              ###
###        ericjang2004@gmail.com                                         ###
###                                                                       ###
#############################################################################
#############################################################################

#!/usr/bin/env python
import argparse, os, glob
from zipfile import ZipFile
from xml.dom.minidom import parse


def slide_number_from_xml_file(filename):
    """
    Integer slide number from filename

    Assumes /path/to/Slidefile/somekindofSlide36.something
    """
    return int(filename[filename.rfind("Slide") + 5:filename.rfind(".")])

#main function
def run():
    parser = argparse.ArgumentParser(description='exports speaker notes from pptx files by parsing the XML')
    parser.add_argument('-v', action='version', version='%(prog)s 1.0')
    parser.add_argument('-p', metavar='<path/to/pptx/file>', help='path to the Powerpoint 2007+ file', action='store',
                        type=file, dest='pptxfile')
    #add more arguments here in future if you wish to expand
    args = parser.parse_args()
    #extract the pptx file as a zip archive
    #note: only extract from pptx files that you trust. they could potentially overwrite your important files.
    ZipFile(args.pptxfile).extractall(path='/tmp/', pwd=None)
    path = '/tmp/ppt/notesSlides/'

    notesDict = {}
    #open up the file that you wish to write to
    writepath = os.path.dirname(args.pptxfile.name) + '/' + os.path.basename(args.pptxfile.name).rsplit('.', 1)[
        0] + '_presenter_notes.txt'
    print writepath

    # Get the xml we extracted from the zip file
    xmlfiles = glob.glob(os.path.join(path, '*.xml'))

    with open(writepath, 'w') as f:
        for infile in sorted(xmlfiles, key=slide_number_from_xml_file):
            #parse each XML notes file from the notes folder.
            dom = parse(infile)
            noteslist = dom.getElementsByTagName('a:t')
            if len(noteslist) == 0:
                continue

            #separate last element of noteslist for use as the slide marking.
            slideNumber = slide_number_from_xml_file(infile)
            #start with this empty string to build the presenter note itself
            tempstring = ''

            for node in noteslist:
                xmlTag = node.toxml()
                xmlData = xmlTag.replace('<a:t>', '').replace('</a:t>', '')
                #concatenate the xmlData to the tempstring for the particular slideNumber index.
                tempstring = tempstring + xmlData

            #store the tempstring in the dictionary under the slide number
            notesDict[slideNumber] = tempstring

        #print/write the dictionary to file in sorted order by key value.
        for x in [key for key in sorted(notesDict.keys(), key=int)]:
            f.write('Slide ' + str(x) + '\n')
            notes_string = notesDict[x]
            f.write(notes_string.encode('utf-8', 'ignore') + '\n')

        print 'file successfully written to' + '\'' + writepath + '\''


if __name__ == "__main__":
    try:
        run()
    except (KeyboardInterrupt, SystemExit):
        raise