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Server-side syntax highlighting for all code (#12047)

* Server-side syntax hilighting for all code

This PR does a few things:

* Remove all traces of highlight.js
* Use chroma library to provide fast syntax hilighting directly on the server
* Provide syntax hilighting for diffs
* Re-style both unified and split diffs views
* Add custom syntax hilighting styling for both regular and arc-green

Fixes #7729
Fixes #10157
Fixes #11825
Fixes #7728
Fixes #3872
Fixes #3682

And perhaps gets closer to #9553

* fix line marker

* fix repo search

* Fix single line select

* properly load settings

* npm uninstall highlight.js

* review suggestion

* code review

* forgot to call function

* fix test

* Apply suggestions from code review

suggestions from @silverwind thanks

Co-authored-by: silverwind <me@silverwind.io>

* code review

* copy/paste error

* Use const for highlight size limit

* Update web_src/less/_repository.less

Co-authored-by: Lauris BH <lauris@nix.lv>

* update size limit to 1MB and other styling tweaks

* fix highlighting for certain diff sections

* fix test

* add worker back as suggested

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
This commit is contained in:
mrsdizzie 2020-06-30 17:34:03 -04:00 committed by GitHub
parent ce5f2b9845
commit af7ffaa279
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GPG key ID: 4AEE18F83AFDEB23
336 changed files with 37293 additions and 769 deletions

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@ -32,37 +32,19 @@ func (r *Router) useInterface(mw middleware) {
r.middlewares = append(r.middlewares, mw)
}
// CORSMethodMiddleware sets the Access-Control-Allow-Methods response header
// on a request, by matching routes based only on paths. It also handles
// OPTIONS requests, by settings Access-Control-Allow-Methods, and then
// returning without calling the next http handler.
// CORSMethodMiddleware automatically sets the Access-Control-Allow-Methods response header
// on requests for routes that have an OPTIONS method matcher to all the method matchers on
// the route. Routes that do not explicitly handle OPTIONS requests will not be processed
// by the middleware. See examples for usage.
func CORSMethodMiddleware(r *Router) MiddlewareFunc {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
var allMethods []string
err := r.Walk(func(route *Route, _ *Router, _ []*Route) error {
for _, m := range route.matchers {
if _, ok := m.(*routeRegexp); ok {
if m.Match(req, &RouteMatch{}) {
methods, err := route.GetMethods()
if err != nil {
return err
}
allMethods = append(allMethods, methods...)
}
break
}
}
return nil
})
allMethods, err := getAllMethodsForRoute(r, req)
if err == nil {
w.Header().Set("Access-Control-Allow-Methods", strings.Join(append(allMethods, "OPTIONS"), ","))
if req.Method == "OPTIONS" {
return
for _, v := range allMethods {
if v == http.MethodOptions {
w.Header().Set("Access-Control-Allow-Methods", strings.Join(allMethods, ","))
}
}
}
@ -70,3 +52,28 @@ func CORSMethodMiddleware(r *Router) MiddlewareFunc {
})
}
}
// getAllMethodsForRoute returns all the methods from method matchers matching a given
// request.
func getAllMethodsForRoute(r *Router, req *http.Request) ([]string, error) {
var allMethods []string
err := r.Walk(func(route *Route, _ *Router, _ []*Route) error {
for _, m := range route.matchers {
if _, ok := m.(*routeRegexp); ok {
if m.Match(req, &RouteMatch{}) {
methods, err := route.GetMethods()
if err != nil {
return err
}
allMethods = append(allMethods, methods...)
}
break
}
}
return nil
})
return allMethods, err
}