# usage:
#    droid.py -d <directory> 
#    
#    <directory> is a folder, with subfolders, containing .svg files.  In each svg file in the directory or its children
#    replace 'Droid Sans' with DroidSans

import getopt, sys, os, re
    
def usage():
    print """
usage:
    droid.py -d [directory]
    
    directory is a folder containing .svg files.  
    In each svg file in the directory or its subfolders,
    replace 'Droid Sans' with DroidSans.
    """
    
  	
	   
def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], "hd:", ["help", "directory"])
    except getopt.GetoptError, err:
        # print help information and exit:
        print str(err) # will print something like "option -a not recognized"
        usage()
        sys.exit(2)
    outputDir = None
    
    for o, a in opts:
        #print o
        #print a
        if o in ("-d", "--directory"):
            outputDir = a
        elif o in ("-h", "--help"):
            usage()
            sys.exit(2)
        else:
            assert False, "unhandled option"
    
    if(not(outputDir)):
        usage()
        sys.exit(2)
        
    
    for root, dirs, files in os.walk(outputDir, topdown=False):
        for filename in files:
            if (filename.endswith(".svg")):  
                infile = open(os.path.join(root, filename), "r")
                svg = infile.read();
                infile.close();
                svg1 = svg.replace("'Droid Sans'", "DroidSans");
                svg2 = svg1.replace("Droid Sans", "DroidSans");
                svg3 = svg2.replace("'DroidSans'", "DroidSans");
                
                if (len(svg3) != len(svg)):               
                    outfile = open(os.path.join(root, filename), "w")
                    outfile.write(svg3);
                    outfile.close()
                    print "{0}".format(os.path.join(root, filename))

                
  
    
if __name__ == "__main__":
    main()