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mirror of https://github.com/go-gitea/gitea synced 2024-12-24 09:34:26 +00:00
gitea/vendor/github.com/alecthomas/chroma/coalesce.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

36 lines
780 B
Go
Vendored

package chroma
// Coalesce is a Lexer interceptor that collapses runs of common types into a single token.
func Coalesce(lexer Lexer) Lexer { return &coalescer{lexer} }
type coalescer struct{ Lexer }
func (d *coalescer) Tokenise(options *TokeniseOptions, text string) (Iterator, error) {
var prev Token
it, err := d.Lexer.Tokenise(options, text)
if err != nil {
return nil, err
}
return func() Token {
for token := it(); token != (EOF); token = it() {
if len(token.Value) == 0 {
continue
}
if prev == EOF {
prev = token
} else {
if prev.Type == token.Type && len(prev.Value) < 8192 {
prev.Value += token.Value
} else {
out := prev
prev = token
return out
}
}
}
out := prev
prev = EOF
return out
}, nil
}