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import templates, pygments, cgi, db, datetime, settings, os, mimetypes, Cookie, random
from pygments import highlight
from pygments.lexers import get_all_lexers, get_lexer_by_name
from pygments.formatters import HtmlFormatter
base62_alphabet = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
class CustomHtmlFormatter(HtmlFormatter):
def wrap(self, source, outfile):
yield 0, '<pre>'
line = 1
for i, t in source:
yield i, '<span id="codeline-%d">%s</span>' % (line, t)
line += 1
yield 0, '<pre>'
class Paste(object):
def __init__(self):
lexers = dict([(x[0], x[1][0]) for x in get_all_lexers()])
self.lexers = []
removed = []
for cat, ls in settings.categories:
for l in ls:
removed.append(l)
self.lexers.append((cat, [(x, lexers[x]) for x in ls]))
for l in removed:
try:
del lexers[l]
except KeyError:
pass
self.lexers.append(('Others' if settings.categories else 'Syntax', sorted(lexers.items(), cmp = lambda a, b: cmp(a[0], b[0]))))
self.formatter = CustomHtmlFormatter(linenos = 'table', lineanchors = 'line', anchorlinenos = True)
random.seed()
def message(self, msg, title = 'Message'):
self.start_response('200 OK', [('Content-Type', 'text/html')])
return [str(templates.message(searchList = {
'title': '%s – %s' % (settings.pastebin_name, title),
'header': title,
'text': msg,
}))]
def paste(self):
c = Cookie.SimpleCookie(self.environ['HTTP_COOKIE'] if 'HTTP_COOKIE' in self.environ else None)
if self.environ['REQUEST_METHOD'] == 'POST':
mp = cgi.FieldStorage(fp = self.environ['wsgi.input'], environ = self.environ, keep_blank_values = True)
if mp['type'].value == 'Preview':
return self.preview(mp)
elif mp['type'].value == 'Paste':
return self.add_paste(mp)
else:
return self.message('Invalid type "%s".' % mp['type'].value, 'Error')
self.start_response('200 OK', [('Content-Type', 'text/html')])
return [str(templates.paste(searchList = {
'title': settings.pastebin_name,
'header': settings.pastebin_name,
'lexers': self.lexers,
'default': settings.default,
'nick': c['nick'].value if 'nick' in c else 'Anonymous',
'remembered': 'nick' in c,
}))]
def preview(self, mp):
try:
lex = get_lexer_by_name(mp['syntax'].value.decode('utf8'))
lexername = lex.name
text = highlight(mp['text'].value.decode('utf8'), lex, self.formatter)
except:
return self.message('Could not find the lexer "%s".' % mp['syntax'].value, 'Error')
self.start_response('200 OK', [('Content-Type', 'text/html')])
return [str(templates.view(searchList = {
'title': settings.pastebin_name,
'header': '%s – Preview' % settings.pastebin_name,
'hash': None,
'date': datetime.datetime.utcnow().ctime(),
'nick': mp['nick'].value.decode('utf8') or 'Anoynmous',
'syntax': lexername,
'pastetitle': mp['title'].value.decode('utf8') or 'Untitled',
'text': text,
}))]
def add_paste(self, mp):
nick = mp['nick'].value.decode('utf8') or None
syntax = mp['syntax'].value.decode('utf8') or None
title = mp['title'].value.decode('utf8') or None
text = mp['text'].value.decode('utf8').replace('\r', '') or None
hash = ''.join(random.choice(base62_alphabet) for x in xrange(5))
try:
session = db.Session()
paste = db.Paste(hash, nick, datetime.datetime.utcnow(), syntax, title, text)
session.add(paste)
session.commit()
finally:
session.close()
headers = [('Location', '/view/%s' % hash)]
c = Cookie.SimpleCookie()
c['nick'] = nick
dt = (datetime.datetime.utcnow() + datetime.timedelta(days = 30)) if 'remember_me' in mp else datetime.datetime.utcfromtimestamp(0)
c['nick']['expires'] = dt.strftime('%a, %d-%b-%y %H:%M:%S GMT')
headers.append(('Set-Cookie', c['nick'].OutputString()))
self.start_response('302 Found', headers)
return []
def view(self):
def get_formatted(syntax, text):
lex = get_lexer_by_name(syntax or 'text')
lexername = lex.name
text = highlight(text, lex, self.formatter)
return (lexername, text)
hash = self.path[1]
try:
session = db.Session()
try:
cache = session.query(db.Cache).filter_by(paste_hash = hash).one()
paste = cache.paste
except: # No cache found, generate it.
paste = session.query(db.Paste).filter_by(hash = hash).one()
try:
lexername, text = get_formatted(paste.syntax, paste.text if type(str) == unicode else paste.text.decode('utf8'))
except:
return self.message('Could not find the lexer "%s".' % paste.syntax, 'Error')
cache = db.Cache(hash, lexername, text)
session.add(cache)
session.commit()
# Workaround for attribute refresh.
paste = cache.paste
finally:
session.close()
self.start_response('200 OK', [('Content-Type', 'text/html')])
return [str(templates.view(searchList = {
'title': '%s – View paste – %s' % (settings.pastebin_name, paste.title or 'Untitled'),
'header': '%s – View paste' % settings.pastebin_name,
'hash': hash,
'date': paste.date.ctime(),
'nick': paste.nick or 'Anonymous',
'syntax': cache.syntax_name,
'pastetitle': paste.title or 'Untitled',
'text': cache.text,
}))]
def raw(self):
hash = self.path[1]
try:
session = db.Session()
paste = session.query(db.Paste).filter_by(hash = hash).one()
finally:
session.close()
self.start_response('200 OK', [('Content-Type', 'text/plain')])
return [str(paste.text)]
def highlight_stylesheet(self):
self.start_response('200 OK', [('Content-Type', 'text/css')])
return [self.formatter.get_style_defs()]
def static(self):
filename = settings.static_root + os.path.sep + self.path[1]
if not self.path[1] in ('paste.css', 'edit.js', 'view.js') or not os.path.exists(filename):
self.start_response('404 Not Found', [('Content-Type', 'text/html'), ('Location', '/')])
return ['<a href="/">asdf</a>']
self.start_response('200 OK', [('Content-Type', mimetypes.guess_type(filename)[0] or 'text/plain')])
return open(filename)
def __call__(self, environ, start_response):
self.environ = environ
self.start_response = start_response
path = self.environ['PATH_INFO'].split('/')[1:]
module = path[0] or 'paste'
if module in ('list', 'paste', 'view', 'raw', 'static', 'highlight_stylesheet'):
self.path = path
return getattr(self, module)()
else:
return self.message('Invalid module requested.', 'Error')
if __name__ == '__main__':
from wsgiref.simple_server import make_server
httpd = make_server('', 8000, Paste())
httpd.serve_forever()
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