1#
2#  Copyright 2012  Sebastian Gottfried <sebastiangottfried@web.de>
3#
4#  This program is free software; you can redistribute it and/or
5#  modify it under the terms of the GNU General Public License as
6#  published by the Free Software Foundation; either version 2 of
7#  the License, or (at your option) any later version.
8#
9#  This program is distributed in the hope that it will be useful,
10#  but WITHOUT ANY WARRANTY; without even the implied warranty of
11#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12#  GNU General Public License for more details.
13#
14#  You should have received a copy of the GNU General Public License
15#  along with this program.  If not, see <https://www.gnu.org/licenses/>.
16#
17
18import argparse, os
19from lxml import etree
20
21def find_courses(data_dir, rel_path, root):
22    path = os.path.join(data_dir, rel_path)
23    course_elems = []
24    for filename in os.listdir(path):
25        if filename.endswith('.xml'):
26            course_tree = etree.parse(file(os.path.join(path, filename), 'r'))
27            elem = etree.Element("course")
28            title = etree.SubElement(elem, "title")
29            title.text, = course_tree.xpath("//course/title/text()")
30            description = etree.SubElement(elem, "description")
31            description.text, = course_tree.xpath("//course/description/text()")
32            keyboard_layout_name = etree.SubElement(elem, "keyboardLayout")
33            keyboard_layout_name.text, = course_tree.xpath("//course/keyboardLayout/text()")
34            id_ele = etree.SubElement(elem, "id")
35            id_ele.text, = course_tree.xpath("//course/id/text()")
36            path_ele = etree.SubElement(elem, "path")
37            path_ele.text = os.path.join(rel_path, filename)
38            course_elems.append(elem)
39    course_elems.sort(key=lambda elem: elem.xpath("path/text()"))
40    for elem in course_elems:
41        root.append(elem)
42
43def find_keyboard_layouts(data_dir, rel_path, root):
44    path = os.path.join(data_dir, rel_path)
45    keyboard_layout_elems = []
46    for filename in os.listdir(path):
47        if filename.endswith('.xml'):
48            keyboard_tree = etree.parse(file(os.path.join(path, filename), 'r'))
49            elem = etree.Element("keyboardLayout")
50            title = etree.SubElement(elem, "title")
51            title.text, = keyboard_tree.xpath("//keyboardLayout/title/text()")
52            name = etree.SubElement(elem, "name")
53            name.text, = keyboard_tree.xpath("//keyboardLayout/name/text()")
54            id_ele = etree.SubElement(elem, "id")
55            id_ele.text, = keyboard_tree.xpath("//keyboardLayout/id/text()")
56            path_ele = etree.SubElement(elem, "path")
57            path_ele.text = os.path.join(rel_path, filename)
58            keyboard_layout_elems.append(elem)
59    keyboard_layout_elems.sort(key=lambda elem: elem.xpath("path/text()"))
60    for elem in keyboard_layout_elems:
61        root.append(elem)
62
63
64if __name__ == '__main__':
65    def dir_arg(path):
66        if not os.path.exists(path):
67            msg = "{!r} doesn't exist".format(path)
68            raise argparse.ArgumentTypeError(msg)
69        if not os.path.isdir(path):
70            msg = "{!r} has to be a directory".format(path)
71            raise argparse.ArgumentTypeError(msg)
72        return path
73    parser = argparse.ArgumentParser(
74        description='builds data.xml index file'
75    )
76    parser.add_argument("datadir",
77        type=dir_arg,
78        help="the directory containing the data files",
79        metavar="DIR"
80    )
81    args = parser.parse_args()
82    root = etree.Element('data')
83    find_courses(args.datadir, 'courses', root)
84    find_keyboard_layouts(args.datadir, 'keyboardlayouts', root)
85    print etree.tostring(root)
86