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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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GPG key ID: 4AEE18F83AFDEB23
336 changed files with 37293 additions and 769 deletions
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76
vendor/github.com/alecthomas/chroma/lexers/r/ragel.go generated vendored Normal file
View file

@ -0,0 +1,76 @@
package r
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Ragel lexer.
var Ragel = internal.Register(MustNewLexer(
&Config{
Name: "Ragel",
Aliases: []string{"ragel"},
Filenames: []string{},
MimeTypes: []string{},
},
Rules{
"whitespace": {
{`\s+`, TextWhitespace, nil},
},
"comments": {
{`\#.*$`, Comment, nil},
},
"keywords": {
{`(access|action|alphtype)\b`, Keyword, nil},
{`(getkey|write|machine|include)\b`, Keyword, nil},
{`(any|ascii|extend|alpha|digit|alnum|lower|upper)\b`, Keyword, nil},
{`(xdigit|cntrl|graph|print|punct|space|zlen|empty)\b`, Keyword, nil},
},
"numbers": {
{`0x[0-9A-Fa-f]+`, LiteralNumberHex, nil},
{`[+-]?[0-9]+`, LiteralNumberInteger, nil},
},
"literals": {
{`"(\\\\|\\"|[^"])*"`, LiteralString, nil},
{`'(\\\\|\\'|[^'])*'`, LiteralString, nil},
{`\[(\\\\|\\\]|[^\]])*\]`, LiteralString, nil},
{`/(?!\*)(\\\\|\\/|[^/])*/`, LiteralStringRegex, nil},
},
"identifiers": {
{`[a-zA-Z_]\w*`, NameVariable, nil},
},
"operators": {
{`,`, Operator, nil},
{`\||&|--?`, Operator, nil},
{`\.|<:|:>>?`, Operator, nil},
{`:`, Operator, nil},
{`->`, Operator, nil},
{`(>|\$|%|<|@|<>)(/|eof\b)`, Operator, nil},
{`(>|\$|%|<|@|<>)(!|err\b)`, Operator, nil},
{`(>|\$|%|<|@|<>)(\^|lerr\b)`, Operator, nil},
{`(>|\$|%|<|@|<>)(~|to\b)`, Operator, nil},
{`(>|\$|%|<|@|<>)(\*|from\b)`, Operator, nil},
{`>|@|\$|%`, Operator, nil},
{`\*|\?|\+|\{[0-9]*,[0-9]*\}`, Operator, nil},
{`!|\^`, Operator, nil},
{`\(|\)`, Operator, nil},
},
"root": {
Include("literals"),
Include("whitespace"),
Include("comments"),
Include("keywords"),
Include("numbers"),
Include("identifiers"),
Include("operators"),
{`\{`, Punctuation, Push("host")},
{`=`, Operator, nil},
{`;`, Punctuation, nil},
},
"host": {
{`([^{}\'"/#]+|[^\\]\\[{}]|"(\\\\|\\"|[^"])*"|'(\\\\|\\'|[^'])*'|//.*$\n?|/\*(.|\n)*?\*/|\#.*$\n?|/(?!\*)(\\\\|\\/|[^/])*/|/)+`, Other, nil},
{`\{`, Punctuation, Push()},
{`\}`, Punctuation, Pop(1)},
},
},
))