A site layout ("site map") of the web application, including URL regular
expression patterns, Django views, and metadata for constructing sidebar menus
and (eventually) breadcrumbs.
One function, soc.logic.site.map.getDjangoUrlPatterns(), converts these details
into urlpatterns for use by Django.
Patch by: Todd Larsen
Review by: to-be-reviewed
import os
import re
from webob import Request, Response
from webob import exc
from tempita import HTMLTemplate
VIEW_TEMPLATE = HTMLTemplate("""\
<html>
<head>
<title>{{page.title}}</title>
</head>
<body>
<h1>{{page.title}}</h1>
{{if message}}
<div style="background-color: #99f">{{message}}</div>
{{endif}}
<div>{{page.content|html}}</div>
<hr>
<a href="{{req.url}}?action=edit">Edit</a>
</body>
</html>
""")
EDIT_TEMPLATE = HTMLTemplate("""\
<html>
<head>
<title>Edit: {{page.title}}</title>
</head>
<body>
{{if page.exists}}
<h1>Edit: {{page.title}}</h1>
{{else}}
<h1>Create: {{page.title}}</h1>
{{endif}}
<form action="{{req.path_url}}" method="POST">
<input type="hidden" name="mtime" value="{{page.mtime}}">
Title: <input type="text" name="title" style="width: 70%" value="{{page.title}}"><br>
Content: <input type="submit" value="Save">
<a href="{{req.path_url}}">Cancel</a>
<br>
<textarea name="content" style="width: 100%; height: 75%" rows="40">{{page.content}}</textarea>
<br>
<input type="submit" value="Save">
<a href="{{req.path_url}}">Cancel</a>
</form>
</body></html>
""")
class WikiApp(object):
view_template = VIEW_TEMPLATE
edit_template = EDIT_TEMPLATE
def __init__(self, storage_dir):
self.storage_dir = os.path.abspath(os.path.normpath(storage_dir))
def __call__(self, environ, start_response):
req = Request(environ)
action = req.params.get('action', 'view')
page = self.get_page(req.path_info)
try:
try:
meth = getattr(self, 'action_%s_%s' % (action, req.method))
except AttributeError:
raise exc.HTTPBadRequest('No such action %r' % action).exception
resp = meth(req, page)
except exc.HTTPException, e:
resp = e
return resp(environ, start_response)
def get_page(self, path):
path = path.lstrip('/')
if not path:
path = 'index'
path = os.path.join(self.storage_dir)
path = os.path.normpath(path)
if path.endswith('/'):
path += 'index'
if not path.startswith(self.storage_dir):
raise exc.HTTPBadRequest("Bad path").exception
path += '.html'
return Page(path)
def action_view_GET(self, req, page):
if not page.exists:
return exc.HTTPTemporaryRedirect(
location=req.url + '?action=edit')
if req.cookies.get('message'):
message = req.cookies['message']
else:
message = None
text = self.view_template.substitute(
page=page, req=req, message=message)
resp = Response(text)
if message:
resp.delete_cookie('message')
else:
resp.last_modified = page.mtime
resp.conditional_response = True
return resp
def action_view_POST(self, req, page):
submit_mtime = int(req.params.get('mtime') or '0') or None
if page.mtime != submit_mtime:
return exc.HTTPPreconditionFailed(
"The page has been updated since you started editing it")
page.set(
title=req.params['title'],
content=req.params['content'])
resp = exc.HTTPSeeOther(
location=req.path_url)
resp.set_cookie('message', 'Page updated')
return resp
def action_edit_GET(self, req, page):
text = self.edit_template.substitute(
page=page, req=req)
return Response(text)
class Page(object):
def __init__(self, filename):
self.filename = filename
@property
def exists(self):
return os.path.exists(self.filename)
@property
def title(self):
if not self.exists:
# we need to guess the title
basename = os.path.splitext(os.path.basename(self.filename))[0]
basename = re.sub(r'[_-]', ' ', basename)
return basename.capitalize()
content = self.full_content
match = re.search(r'<title>(.*?)</title>', content, re.I|re.S)
return match.group(1)
@property
def full_content(self):
f = open(self.filename, 'rb')
try:
return f.read()
finally:
f.close()
@property
def content(self):
if not self.exists:
return ''
content = self.full_content
match = re.search(r'<body[^>]*>(.*?)</body>', content, re.I|re.S)
return match.group(1)
@property
def mtime(self):
if not self.exists:
return None
else:
return os.stat(self.filename).st_mtime
def set(self, title, content):
dir = os.path.dirname(self.filename)
if not os.path.exists(dir):
os.makedirs(dir)
new_content = """<html><head><title>%s</title></head><body>%s</body></html>""" % (
title, content)
f = open(self.filename, 'wb')
f.write(new_content)
f.close()
if __name__ == '__main__':
import optparse
parser = optparse.OptionParser(
usage='%prog --port=PORT'
)
parser.add_option(
'-p', '--port',
default='8080',
dest='port',
type='int',
help='Port to serve on (default 8080)')
parser.add_option(
'--wiki-data',
default='./wiki',
dest='wiki_data',
help='Place to put wiki data into (default ./wiki/)')
options, args = parser.parse_args()
print 'Writing wiki pages to %s' % options.wiki_data
app = WikiApp(options.wiki_data)
from wsgiref.simple_server import make_server
httpd = make_server('localhost', options.port, app)
print 'Serving on http://localhost:%s' % options.port
try:
httpd.serve_forever()
except KeyboardInterrupt:
print '^C'