# coding: utf-8
"""
weasyprint.navigator
--------------------
A WeasyPrint-based web browser. In your web browser.
:copyright: Copyright 2011-2014 Simon Sapin and contributors, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
# Do NOT import unicode_literals here. Raw WSGI requires native strings.
from __future__ import division
import os.path
from wsgiref.simple_server import make_server
from weasyprint import CSS, HTML
from weasyprint.compat import base64_encode, iteritems, parse_qs
from weasyprint.urls import url_is_absolute
FAVICON = os.path.join(os.path.dirname(__file__),
'tests', 'resources', 'icon.png')
STYLESHEET = CSS(string='''
:root { font-size: 10pt }
''')
def get_pages(html):
document = html.render(enable_hinting=True, stylesheets=[STYLESHEET])
for page in document.pages:
png_bytes, width, height = document.copy([page]).write_png()
data_url = 'data:image/png;base64,' + (
base64_encode(png_bytes).decode('ascii').replace('\n', ''))
yield width, height, data_url, page.links, page.anchors
def render_template(url):
parts = ['''\
WeasyPrint Navigator
\n')
if url:
for width, height, data_url, links, anchors in get_pages(html):
write('\n'
' 
\n'.format(width, height, data_url))
for link_type, target, (pos_x, pos_y, width, height) in links:
href = ('#' + target if link_type == 'internal'
else '/view/' + target)
write(' \n'
.format(pos_x, pos_y, width, height, href))
for anchor_name, (pos_x, pos_y) in iteritems(anchors):
# Remove 60px to pos_y so that the real pos is below
# the address bar.
write(' \n'
.format(pos_x, pos_y - 60, anchor_name))
write('\n')
else:
write('''
''')
return ''.join(parts).encode('utf8')
def normalize_url(url, query_string=None):
if url:
if query_string:
url += '?' + query_string
if not url_is_absolute(url):
# Default to HTTP rather than relative filenames
url = 'http://' + url
return url
def app(environ, start_response):
def make_response(body, status='200 OK', headers=(),
content_type='text/html; charset=UTF-8'):
start_response(status, [
('Content-Type', content_type),
('Content-Length', str(len(body))),
] + list(headers))
return [body]
path = environ['PATH_INFO']
if path == '/favicon.ico':
with open(FAVICON, 'rb') as fd:
return make_response(fd.read(), content_type='image/x-icon')
elif path.startswith('/pdf/') and len(path) > 5: # len('/pdf/') == 5
url = normalize_url(path[5:], environ.get('QUERY_STRING'))
body = HTML(url=url).write_pdf(stylesheets=[STYLESHEET])
filename = url.rstrip('/').rsplit('/', 1)[-1] or 'out'
return make_response(
body, content_type='application/pdf',
headers=[('Content-Disposition',
'attachment; filename=%s.pdf' % filename)])
elif path.startswith('/view/'):
url = normalize_url(path[6:], environ.get('QUERY_STRING'))
return make_response(render_template(url))
elif path == '/':
args = parse_qs(environ.get('QUERY_STRING') or '')
url = normalize_url(args.get('url', [''])[0])
return make_response(render_template(url))
return make_response(b'Not Found
', status='404 Not Found')
def run(port=5000):
host = '127.0.0.1'
server = make_server(host, port, app)
print('Listening on http://%s:%s/ ...' % (host, port))
server.serve_forever()
if __name__ == '__main__':
run()