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#! /usr/bin/python

# This script is based on Python2.6 Ubuntu package script by Marc Deslauriers

import formatter, htmllib
import os, sys, re

class PyHTMLParser(htmllib.HTMLParser):
    pages_to_include = set(('index.html', 'PySide/QtHelp/index.html', 'PySide/QtSvg/index.html',
                        'PySide/QtGui/index.html', 'PySide/QtNetwork/index.html', 'PySide/QtWebKit/index.html',
                        'PySide/QtUiTools/index.html', 'PySide/QtXml/index.html', 'PySide/QtCore/index.html',
                        'PySide/QtScriptTools/index.html', 'PySide/QtOpenGL/index.html', 'PySide/QtScript/index.html',
                        'PySide/QtSql/index.html', 'howto-build/index.html'))

    def __init__(self, formatter, basedir, fn, indent, parents=set()):
        htmllib.HTMLParser.__init__(self, formatter)
        self.basedir = basedir
        self.dir, self.fn = os.path.split(fn)
        self.data = ''
        self.parents = parents
        self.link = {}
        self.indent = indent
        self.last_indent = indent - 1
        self.sub_indent = 0
        self.sub_count = 0
        self.next_link = False

    def process_link(self):
        new_href = os.path.join(self.dir, self.link['href'])
        text = self.link['text']
        indent = self.indent + self.sub_indent
        if self.last_indent == indent:
            print '%s</sub>' % ('  ' * self.last_indent)
            self.sub_count -= 1
        print '%s<sub link="%s" name="%s">' % ('  ' * indent, new_href, text)
        self.sub_count += 1
        self.last_indent = self.indent + self.sub_indent

    def start_li(self, attrs):
        self.sub_indent += 1
        self.next_link = True

    def end_li(self):
        indent = self.indent + self.sub_indent
        if self.sub_count > 0:
            print '%s</sub>' % ('  ' * self.last_indent)
            self.sub_count -= 1
            self.last_indent -= 1
        self.sub_indent -= 1

    def start_a(self, attrs):
        self.link = {}
        for attr in attrs:
            self.link[attr[0]] = attr[1]
        self.data = ''
        
    def end_a(self):
        process = False
        text = self.data.replace('\t', '').replace('\n', ' ').replace('&', '&amp;').replace('<', '&lt;').replace('>', '&gt;')
        self.link['text'] = text
        # handle a tag without href attribute
        try:
            href = self.link['href']
        except KeyError:
            return

        abs_href = os.path.join(self.basedir, href)
        if abs_href in self.parents:
            return
        if href.startswith('..') or href.startswith('http:') \
               or href.startswith('mailto:') or href.startswith('news:'):
            return
        if href in ('', 'about.html', 'modindex.html', 'genindex.html', 'glossary.html',
                    'search.html', 'contents.html', 'download.html', 'bugs.html',
                    'license.html', 'copyright.html'):
            return

        if self.link.has_key('class'):
            if self.link['class'] in ('biglink'):
                process = True
            if self.link['class'] in ('reference external'):
                if self.next_link:
                    process = True
                    next_link = False

        if process == True:
            self.process_link()
            if href in self.pages_to_include:
                self.parse_file(os.path.join(self.dir, href))

    def finish(self):
        if self.sub_count > 0:
            print '%s</sub>' % ('  ' * self.last_indent)

    def handle_data(self, data):
        self.data += data

    def parse_file(self, href):
        # TODO basedir bestimmen
        parent = os.path.join(self.basedir, self.fn)
        self.parents.add(parent)
        parser = PyHTMLParser(formatter.NullFormatter(),
                              self.basedir, href, self.indent + 1,
                              self.parents)
        text = file(self.basedir + '/' + href).read()
        parser.feed(text)
        parser.finish()
        parser.close()
        if parent in self.parents:
            self.parents.remove(parent)

class PyIdxHTMLParser(htmllib.HTMLParser):
    def __init__(self, formatter, basedir, fn, indent):
        htmllib.HTMLParser.__init__(self, formatter)
        self.basedir = basedir
        self.dir, self.fn = os.path.split(fn)
        self.data = ''
        self.link = {}
        self.indent = indent
        self.active = False
        self.indented = False
        self.nolink = False
        self.header = ''
        self.last_letter = 'Z'
        self.last_text = ''

    def process_link(self):
        new_href = os.path.join(self.dir, self.link['href'])
        text = self.link['text']
        if not self.active:
            return
        if text.startswith('['):
            return
        if self.link.get('rel', None) in ('prev', 'parent', 'next', 'contents', 'index'):
            return
        if self.indented:
            text = self.last_text + ' ' + text
        else:
            # Save it in case we need it again
            self.last_text = re.sub(' \([\w\-\.\s]+\)', '', text)
        indent = self.indent
        print '%s<function link="%s" name="%s"/>' % ('  ' * indent, new_href, text)

    def start_dl(self, attrs):
        if self.last_text:
            # Looks like we found the second part to a command
            self.indented = True

    def end_dl(self):
        self.indented = False

    def start_dt(self, attrs):
        self.data = ''
        self.nolink = True

    def end_dt(self):
        if not self.active:
            return
        if self.nolink == True:
            # Looks like we found the first part to a command
            self.last_text = re.sub(' \([\w\-\.\s]+\)', '', self.data)
            self.nolink = False

    def start_h2(self, attrs):
        for k, v in attrs:
            if k == 'id':
                self.header = v
                if v == '_':
                    self.active = True

    def start_td(self, attrs):
        self.indented = False
        self.last_text = ''

    def start_table(self, attrs):
        pass

    def end_table(self):
        if self.header == self.last_letter:
            self.active = False

    def start_a(self, attrs):
        self.nolink = False
        self.link = {}
        for attr in attrs:
            self.link[attr[0]] = attr[1]
        self.data = ''
        
    def end_a(self):
        text = self.data.replace('\t', '').replace('\n', ' ').replace('&', '&amp;').replace('<', '&lt;').replace('>', '&gt;')
        self.link['text'] = text
        # handle a tag without href attribute
        try:
            href = self.link['href']
        except KeyError:
            return
        self.process_link()

    def handle_data(self, data):
        self.data += data

def main():
    base = sys.argv[1]
    fn = sys.argv[2]

    parser = PyHTMLParser(formatter.NullFormatter(), base, fn, indent=0)
    print '<?xml version="1.0" encoding="iso-8859-1"?>'
    print '<book title="PySide %s Documentation" name="PySide" version="%s" link="index.html">' % (sys.argv[3], sys.argv[3])
    print '<chapters>'
    parser.parse_file(fn)
    print '</chapters>'

    print '<functions>'

    fn = 'genindex.html'
    parser = PyIdxHTMLParser(formatter.NullFormatter(), base, fn, indent=1)
    text = file(base + '/' + fn).read()
    parser.feed(text)
    parser.close()

    print '</functions>'
    print '</book>'

main()