bottle.py中的路由解析代码
# Routing def compile_route(route): """ Compiles a route string and returns a precompiled RegexObject. Routes may contain regular expressions with named groups to support url parameters. Example: '/user/(?P<id>[0-9]+)' will match '/user/5' with {'id':'5'} A more human readable syntax is supported too. Example: '/user/:id/:action' will match '/user/5/kiss' with {'id':'5', 'action':'kiss'} Placeholders match everything up to the next slash. '/user/:id#[0-9]+#' will match '/user/5' but not '/user/tim' Instead of "#" you can use any single special char other than "/" """ route = route.strip().lstrip('$^/ ').rstrip('$^ ') # 将 /user/:id#[0-9]+#/ 转换为 /user/(?P<id>[0-9]+)/ route = re.sub(r':([a-zA-Z_]+)(?P<uniq>[^\w/])(?P<re>.+?)(?P=uniq)',r'(?P<\1>\g<re>)',route) # 将 /user/:id/ 转换为 /user/(?P<id>[^/]+)/ route = re.sub(r':([a-zA-Z_]+)',r'(?P<\1>[^/]+)', route) return re.compile('^/%s$' % route)