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

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* 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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336 changed files with 37293 additions and 769 deletions
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59
vendor/github.com/alecthomas/chroma/lexers/h/html.go generated vendored Normal file
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@ -0,0 +1,59 @@
package h
import (
. "github.com/alecthomas/chroma" // nolint
. "github.com/alecthomas/chroma/lexers/c" // nolint
"github.com/alecthomas/chroma/lexers/internal"
. "github.com/alecthomas/chroma/lexers/j" // nolint
)
// HTML lexer.
var HTML = internal.Register(MustNewLexer(
&Config{
Name: "HTML",
Aliases: []string{"html"},
Filenames: []string{"*.html", "*.htm", "*.xhtml", "*.xslt"},
MimeTypes: []string{"text/html", "application/xhtml+xml"},
NotMultiline: true,
DotAll: true,
CaseInsensitive: true,
},
Rules{
"root": {
{`[^<&]+`, Text, nil},
{`&\S*?;`, NameEntity, nil},
{`\<\!\[CDATA\[.*?\]\]\>`, CommentPreproc, nil},
{`<!--`, Comment, Push("comment")},
{`<\?.*?\?>`, CommentPreproc, nil},
{`<![^>]*>`, CommentPreproc, nil},
{`(<)(\s*)(script)(\s*)`, ByGroups(Punctuation, Text, NameTag, Text), Push("script-content", "tag")},
{`(<)(\s*)(style)(\s*)`, ByGroups(Punctuation, Text, NameTag, Text), Push("style-content", "tag")},
{`(<)(\s*)([\w:.-]+)`, ByGroups(Punctuation, Text, NameTag), Push("tag")},
{`(<)(\s*)(/)(\s*)([\w:.-]+)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation, Text, NameTag, Text, Punctuation), nil},
},
"comment": {
{`[^-]+`, Comment, nil},
{`-->`, Comment, Pop(1)},
{`-`, Comment, nil},
},
"tag": {
{`\s+`, Text, nil},
{`([\w:-]+\s*)(=)(\s*)`, ByGroups(NameAttribute, Operator, Text), Push("attr")},
{`[\w:-]+`, NameAttribute, nil},
{`(/?)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation), Pop(1)},
},
"script-content": {
{`(<)(\s*)(/)(\s*)(script)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation, Text, NameTag, Text, Punctuation), Pop(1)},
{`.+?(?=<\s*/\s*script\s*>)`, Using(Javascript), nil},
},
"style-content": {
{`(<)(\s*)(/)(\s*)(style)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation, Text, NameTag, Text, Punctuation), Pop(1)},
{`.+?(?=<\s*/\s*style\s*>)`, Using(CSS), nil},
},
"attr": {
{`".*?"`, LiteralString, Pop(1)},
{`'.*?'`, LiteralString, Pop(1)},
{`[^\s>]+`, LiteralString, Pop(1)},
},
},
))