~bzr-pqm/bzr/bzr.dev

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#!/usr/bin/env python

import errno
import os
from StringIO import StringIO
import sys

try:
    from docutils.core import publish_file
    from docutils.parsers import rst
except ImportError:
    print "Missing dependency.  Please install docutils."
    sys.exit(1)
try:
    from elementtree.ElementTree import XML
    from elementtree import HTMLTreeBuilder
except ImportError:
    print "Missing dependency.  Please install ElementTree."
    sys.exit(1)
try:
    import kid
except ImportError:
    print "Missing dependency.  Please install Kid."
    sys.exit(1)


def kidified_rest(rest_file, template_name):
    xhtml_file = StringIO()
    # prevent docutils from autoclosing the StringIO
    xhtml_file.close = lambda: None
    xhtml = publish_file(rest_file, writer_name='html', destination=xhtml_file,
                         settings_overrides={"doctitle_xform": 0} 
    
    )
    xhtml_file.seek(0)
    xml = HTMLTreeBuilder.parse(xhtml_file)
    head = xml.find('head')
    body = xml.find('body')
    assert head is not None
    assert body is not None
    template=kid.Template(file=template_name, 
                          head=head, body=body)
    return (template.serialize(output="html"))


def safe_open(filename, mode):
    try:
        return open(filename, mode + 'b')
    except IOError, e:
        if e.errno != errno.ENOENT:
            raise
        sys.stderr.write('file not found: %s\n' % sys.argv[2])
        sys.exit(3)


def main(template, source=None, target=None):
    if source is not None:
        rest_file = safe_open(source, 'r')
    else:
        rest_file = sys.stdin
    if target is not None:
        out_file = safe_open(target, 'w')
    else:
        out_file = sys.stdout
    out_file.write(kidified_rest(rest_file, template))

assert len(sys.argv) > 1

main(*sys.argv[1:])