class DitaBuilder(Builder):
    name = "dita"
    format = 'dita'
    out_suffix = '.dita'
    _publisher = None
    supported_image_types = ['image/png', 'image/jpeg']



    def init(self):
        print('DitaBuilder.init()')

    def get_outdated_docs(self):
        for docname in self.env.found_docs:
            if docname not in self.env.all_docs:
                yield docname
                continue
            targetname = self.env.doc2path(docname, self.outdir,
                                           self.out_suffix)
            try:
                targetmtime = path.getmtime(targetname)
            except Exception:
                targetmtime = 0
            try:
                srcmtime = path.getmtime(self.env.doc2path(docname))
                if srcmtime > targetmtime:
                    yield docname
            except EnvironmentError:
                # source doesn't exist anymore
                pass


    def prepare_writing(self, docnames):
        self.writer = DitaWriter(self)

    def get_target_uri(self, docname, typ=None):
        return docname + self.out_suffix

    def write_doc(self, docname, doctree):
        self.docname = docname
        destination = StringOutput(encoding='utf-8')
        self.writer.write(doctree, destination)
        outfilename = path.join(self.outdir, os_path(docname) + self.out_suffix)
        ensuredir(path.dirname(outfilename))
        try:
            f = codecs.open(outfilename, 'w', 'utf-8')
            try:
                f.write(self.writer.output)
            finally:
                f.close()
        except (IOError, OSError), err:
            self.warn("error writing file %s: %s" % (outfilename, err))
        self.post_process_images(doctree)
 def prepare_writing(self, docnames):
     self.writer = DitaWriter(self)