forgejo/vendor/github.com/alecthomas/chroma/formatter.go
mrsdizzie af7ffaa279
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>
2020-07-01 00:34:03 +03:00

44 lines
1 KiB
Go

package chroma
import (
"io"
)
// A Formatter for Chroma lexers.
type Formatter interface {
// Format returns a formatting function for tokens.
//
// If the iterator panics, the Formatter should recover.
Format(w io.Writer, style *Style, iterator Iterator) error
}
// A FormatterFunc is a Formatter implemented as a function.
//
// Guards against iterator panics.
type FormatterFunc func(w io.Writer, style *Style, iterator Iterator) error
func (f FormatterFunc) Format(w io.Writer, s *Style, it Iterator) (err error) { // nolint
defer func() {
if perr := recover(); perr != nil {
err = perr.(error)
}
}()
return f(w, s, it)
}
type recoveringFormatter struct {
Formatter
}
func (r recoveringFormatter) Format(w io.Writer, s *Style, it Iterator) (err error) {
defer func() {
if perr := recover(); perr != nil {
err = perr.(error)
}
}()
return r.Formatter.Format(w, s, it)
}
// RecoveringFormatter wraps a formatter with panic recovery.
func RecoveringFormatter(formatter Formatter) Formatter { return recoveringFormatter{formatter} }