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|
from lxml import etree
from docutils import nodes, writers
from os import path
XML_HEAD = u"""<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
"""
class DitaWriter(writers.Writer):
def __init__(self, builder):
writers.Writer.__init__(self)
self.builder = builder
self.topics = etree.TreeBuilder()
def translate(self):
visitor = DitaTranslator(self.document, self.builder)
self.document.walkabout(visitor)
self.output = XML_HEAD
self.output += visitor.body
class DitaTranslator(nodes.NodeVisitor):
def __init__(self, document, builder):
nodes.NodeVisitor.__init__(self, document)
self.builder = builder
self.tree = etree.TreeBuilder()
# trace if we are inside a body element
self.inBody = False
# trace if we have an empty document
self.hasContent = False
def visit_document(self, node):
pass
def depart_document(self, node):
if not self.hasContent:
self.body = u'<topic id="none"></topic>'
else:
root = self.tree.close()
self.body = etree.tostring(root, pretty_print=True)
def visit_comment(self, node):
raise nodes.SkipNode
def depart_comment(self, node):
pass
def visit_Text(self, node):
self.tree.data(node.astext())
def depart_Text(self, node):
pass
def visit_section(self, node):
if self.inBody:
self.tree.end('body')
self.inBody = False
id = node.get('ids')[0]
self.tree.start('topic', {'id':id})
self.hasContent = True
def depart_section(self, node):
if self.inBody:
self.tree.end('body')
self.inBody = False
self.tree.end('topic')
def visit_title(self, node):
self.tree.start('title', {})
def depart_title(self, node):
self.tree.end('title')
self.tree.start('body', {})
self.inBody = True
def visit_paragraph(self, node):
self.tree.start('p', {})
def depart_paragraph(self, node):
self.tree.end('p')
def visit_compound(self, node):
raise nodes.SkipNode
def depart_compound(self, node):
pass
def visit_compact_paragraph(self, node):
self.tree.start('p', {})
def depart_compact_paragraph(self, node):
self.tree.end('p')
def visit_bullet_list(self, node):
self.tree.start('ul', {})
def depart_bullet_list(self, node):
self.tree.end('ul')
def visit_list_item(self, node):
self.tree.start('li', {})
def depart_list_item(self, node):
self.tree.end('li')
def visit_enumerated_list(self, node):
self.tree.start('ol', {})
def depart_enumerated_list(self, node):
self.tree.end('ol')
def visit_reference(self, node):
refuri = node['refuri']
format = ''
if refuri.startswith('http://'):
format = 'html'
name, ext = path.splitext(node.get('refuri'))
if ext:
format = ext[1:]
self.tree.start('xref', {'href':refuri, 'format':format})
def depart_reference(self, node):
self.tree.end('xref')
def visit_emphasis(self, node):
self.tree.start('i', {})
def depart_emphasis(self, node):
self.tree.end('i')
def visit_strong(self, node):
self.tree.start('b', {})
def depart_strong(self, node):
self.tree.end('b')
def visit_literal(self, node):
self.tree.start('tt', {})
def depart_literal(self, node):
self.tree.end('tt')
def visit_target(self, node):
raise nodes.SkipNode
def depart_target(self, node):
pass
def visit_image(self, node):
args = {}
args['href'] = path.relpath(node['uri'], path.dirname(self.builder.docname))
if node.has_key('align'):
args['align'] = node['align']
self.tree.start('image', args)
def depart_image(self, node):
self.tree.end('image')
def visit_problematic(self, node):
raise nodes.SkipNode
def depart_problematic(self, node):
pass
def visit_title_reference(self, node):
pass
def depart_title_reference(self, node):
pass
def visit_rubric(self, node):
self.tree.start('note', {'type':'notice'})
def depart_rubric(self, node):
self.tree.end('note')
def visit_note(self, node):
self.tree.start('note', {'type':'note'})
def depart_note(self, node):
self.tree.end('note')
def visit_warning(self, node):
self.tree.start('note', {'type':'warning'})
def depart_warning(self, node):
self.tree.end('note')
def visit_literal_block(self, node):
self.tree.start('codeblock', {})
def depart_literal_block(self, node):
self.tree.end('codeblock')
def visit_table(self, node):
self.tree.start('table', {})
def depart_table(self, node):
self.tree.end('table')
def visit_tgroup(self, node):
self.tree.start('tgroup', {'cols':str(node.get('cols'))})
def depart_tgroup(self, node):
self.tree.end('tgroup')
def visit_tbody(self, node):
self.tree.start('tbody', {})
def depart_tbody(self, node):
self.tree.end('tbody')
def visit_thead(self, node):
self.tree.start('thead', {})
def depart_thead(self, node):
self.tree.end('thead')
def visit_colspec(self, node):
self.tree.start('colspec', {})
def depart_colspec(self, node):
self.tree.end('colspec')
def visit_row(self, node):
self.tree.start('row', {})
def depart_row(self, node):
self.tree.end('row')
def visit_entry(self, node):
self.tree.start('entry', {})
def depart_entry(self, node):
self.tree.end('entry')
def visit_definition_list(self, node):
self.tree.start('dl', {})
def depart_definition_list(self, node):
self.tree.end('dl')
def visit_definition_list_item(self, node):
self.tree.start('dlentry', {})
def depart_definition_list_item(self, node):
self.tree.end('dlentry')
def visit_term(self, node):
self.tree.start('dt', {})
def depart_term(self, node):
self.tree.end('dt')
def visit_definition(self, node):
self.tree.start('dd', {})
def depart_definition(self, node):
self.tree.end('dd')
def visit_footnote_reference(self, node):
raise nodes.SkipNode
def depart_footnote_reference(self, node):
pass
def visit_footnote(self, node):
raise nodes.SkipNode
def depart_footnote(self, node):
pass
def visit_label(self, node):
raise nodes.SkipNode
def depart_label(self, node):
pass
def visit_inline(self, node):
print('inlines are not supported yet')
raise nodes.SkipNode
def depart_inline(self, node):
pass
def visit_seealso(self, node):
print('seealsos are not supported yet')
raise nodes.SkipNode
def depart_seealso(self, node):
pass
def visit_topic(self, node):
print('topics are not supported yet')
raise nodes.SkipNode
def depart_topic(self, node):
pass
def visit_block_quote(self, node):
self.tree.start('lq', {})
def depart_block_quote(self, node):
self.tree.end('lq')
def visit_line_block(self, node):
self.tree.start('lines', {})
def depart_line_block(self, node):
self.tree.end('lines')
def visit_line(self, node):
pass
def depart_line(self, node):
self.tree.data('\n')
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