The "name" parameter was originally a workaround for the fact that function
pointers in Go never compare equal to each other (unless they are both nil).
Unfortunately, this presents a pretty terrible interface to the end programmer,
since they'll probably end up stuttering something like:
mux.Use("MyMiddleware", MyMiddleware)
Luckily, I found a workaround for doing function pointer equality (it doesn't
even require "unsafe"!), so we can get rid of the name parameter for good.
This change replaces a bit of API surface area (the Sub() method on Muxes) with
a slightly more expressive pattern syntax. I'm mostly doing this because it
seems cleaner: the "*" gets to take on a meaning very similar to what it means
in Sinatra (without growing regexp-like middle-of-a-path globbing, which sounds
terrifying and not particularly useful), and we get to nuke a useless function
from the API.
In order to avoid a dependency on the go.crypto terminal package, let's try to
do our own TTY sniffing. I think in practice this will work surprisingly well,
even if it feels incredibly sketchy.
Package web will now add a key to the environment when it fails to find a
valid route for the requested method, but when valid routes exist for other
methods.
This allows either the 404 handler or a sufficiently clever middleware layer to
provide support for OPTIONS automatically.
Add tests for both string and regular expression patterns. Also, reimplement
regexp.Regexp.Prefix() on top of the raw regexp/syntax representation, so we can
get a little more information out of regexps:
- Whether or not the regexp is left-anchored (at the beginning of the string)
- What the prefix of the regular expression is, even for left-anchored
expressions.
We do this by running the regular expression instructions ourselves, more or
less cargo-culting the original implementation from package regexp/syntax.
Unfortunately it's ~impossible to make this abstraction non-leaky, because the
regexp package doesn't give us information about whether or not it was
constructed using POSIX or Perl syntax, for example, or if the longest-match
setting was applied.
The upshot is that regexps are now probably pretty performant-ish. Maybe. (I
haven't actually benchmarked it).
They say that every programmer builds a web framework at some point. This one is
mine.
The basic idea behind this one is that I wanted a Sinatra for Go, and I couldn't
find one anywhere. Furthermore, net/http is in many ways really close to what I
want out of a Sinatra-in-Go, and many of the frameworks I did find seemed to
reinvent too much, or were incompatible with net/http in weird ways, or used too
much questionable reflection magic. So long story short, I wrote my own.
This implementation is only half-baked, and among other things it's missing a
whole lot of tests.
Package graceful provides graceful shutdown support for net/http servers,
net.Listeners and net.Conns. It does this through terrible, terrible hacks, but
"oh well!"
Package bind provides a convenient syntax for binding to sockets, as well as a
fair bit of magic to automatically Do The Right Thing in both development and
production.
Package param implements parameter parsing into a target struct (in much the
same way as encoding/json parses JSON into a struct). It targets the common
jQuery.param / Ruby on Rails style parameter serialization format.