gproj-update

#!/usr/bin/python
data_folder = 'data'

import os
import sys
from lxml import etree as ET

if len(sys.argv) < 2 :
    sys.exit("Usage: gproj-update my_project.gproj [data_filename='data']")

if len(sys.argv) >= 3 :
    data_folder = sys.argv[2]

filename = sys.argv[1]

parser = ET.XMLParser(remove_blank_text=True)
tree = ET.parse(filename, parser)
root = tree.getroot()
data = None

for folder in root.findall('folder') :
    if folder.attrib['name'] == data_folder :
        data = folder
        for child in folder :
            folder.remove(child)

def walk(root, tag) :
    for item in os.listdir(root) :
        path = os.path.join(root, item)
        print(path)
        if os.path.isdir(path) :
            folder = ET.SubElement(tag, 'folder')
            folder.attrib['name'] = item
            walk(path, folder)
        else :
            file = ET.SubElement(tag, 'file')
            file.attrib['source'] = path

walk(data_folder, data)
tree.write(filename, pretty_print=True)