Add a new route or replace the target for an existing route.
(self, rule, method, target, name=None)
| 325 | yield prefix+rule[offset:], None, None |
| 326 | |
| 327 | def add(self, rule, method, target, name=None): |
| 328 | ''' Add a new route or replace the target for an existing route. ''' |
| 329 | if rule in self.rules: |
| 330 | self.rules[rule][method] = target |
| 331 | if name: self.builder[name] = self.builder[rule] |
| 332 | return |
| 333 | |
| 334 | target = self.rules[rule] = {method: target} |
| 335 | |
| 336 | # Build pattern and other structures for dynamic routes |
| 337 | anons = 0 # Number of anonymous wildcards |
| 338 | pattern = '' # Regular expression pattern |
| 339 | filters = [] # Lists of wildcard input filters |
| 340 | builder = [] # Data structure for the URL builder |
| 341 | is_static = True |
| 342 | for key, mode, conf in self.parse_rule(rule): |
| 343 | if mode: |
| 344 | is_static = False |
| 345 | mask, in_filter, out_filter = self.filters[mode](conf) |
| 346 | if key: |
| 347 | pattern += '(?P<%s>%s)' % (key, mask) |
| 348 | else: |
| 349 | pattern += '(?:%s)' % mask |
| 350 | key = 'anon%d' % anons; anons += 1 |
| 351 | if in_filter: filters.append((key, in_filter)) |
| 352 | builder.append((key, out_filter or str)) |
| 353 | elif key: |
| 354 | pattern += re.escape(key) |
| 355 | builder.append((None, key)) |
| 356 | self.builder[rule] = builder |
| 357 | if name: self.builder[name] = builder |
| 358 | |
| 359 | if is_static and not self.strict_order: |
| 360 | self.static[self.build(rule)] = target |
| 361 | return |
| 362 | |
| 363 | def fpat_sub(m): |
| 364 | return m.group(0) if len(m.group(1)) % 2 else m.group(1) + '(?:' |
| 365 | flat_pattern = re.sub(r'(\\*)(\(\?P<[^>]*>|\((?!\?))', fpat_sub, pattern) |
| 366 | |
| 367 | try: |
| 368 | re_match = re.compile('^(%s)$' % pattern).match |
| 369 | except re.error, e: |
| 370 | raise RouteSyntaxError("Could not add Route: %s (%s)" % (rule, e)) |
| 371 | |
| 372 | def match(path): |
| 373 | """ Return an url-argument dictionary. """ |
| 374 | url_args = re_match(path).groupdict() |
| 375 | for name, wildcard_filter in filters: |
| 376 | try: |
| 377 | url_args[name] = wildcard_filter(url_args[name]) |
| 378 | except ValueError: |
| 379 | raise HTTPError(400, 'Path has wrong format.') |
| 380 | return url_args |
| 381 | |
| 382 | try: |
| 383 | combined = '%s|(^%s$)' % (self.dynamic[-1][0].pattern, flat_pattern) |
| 384 | self.dynamic[-1] = (re.compile(combined), self.dynamic[-1][1]) |