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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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95
vendor/github.com/alecthomas/chroma/lexers/b/bash.go generated vendored Normal file
View file

@ -0,0 +1,95 @@
package b
import (
"regexp"
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
var bashAnalyserRe = regexp.MustCompile(`(?m)^#!.*/bin/(?:env |)(?:bash|zsh|sh|ksh)`)
// Bash lexer.
var Bash = internal.Register(MustNewLexer(
&Config{
Name: "Bash",
Aliases: []string{"bash", "sh", "ksh", "zsh", "shell"},
Filenames: []string{"*.sh", "*.ksh", "*.bash", "*.ebuild", "*.eclass", "*.exheres-0", "*.exlib", "*.zsh", "*.zshrc", ".bashrc", "bashrc", ".bash_*", "bash_*", "zshrc", ".zshrc", "PKGBUILD"},
MimeTypes: []string{"application/x-sh", "application/x-shellscript"},
},
Rules{
"root": {
Include("basic"),
{"`", LiteralStringBacktick, Push("backticks")},
Include("data"),
Include("interp"),
},
"interp": {
{`\$\(\(`, Keyword, Push("math")},
{`\$\(`, Keyword, Push("paren")},
{`\$\{#?`, LiteralStringInterpol, Push("curly")},
{`\$[a-zA-Z_]\w*`, NameVariable, nil},
{`\$(?:\d+|[#$?!_*@-])`, NameVariable, nil},
{`\$`, Text, nil},
},
"basic": {
{`\b(if|fi|else|while|do|done|for|then|return|function|case|select|continue|until|esac|elif)(\s*)\b`, ByGroups(Keyword, Text), nil},
{"\\b(alias|bg|bind|break|builtin|caller|cd|command|compgen|complete|declare|dirs|disown|echo|enable|eval|exec|exit|export|false|fc|fg|getopts|hash|help|history|jobs|kill|let|local|logout|popd|printf|pushd|pwd|read|readonly|set|shift|shopt|source|suspend|test|time|times|trap|true|type|typeset|ulimit|umask|unalias|unset|wait)(?=[\\s)`])", NameBuiltin, nil},
{`\A#!.+\n`, CommentPreproc, nil},
{`#.*\S`, CommentSingle, nil},
{`\\[\w\W]`, LiteralStringEscape, nil},
{`(\b\w+)(\s*)(\+?=)`, ByGroups(NameVariable, Text, Operator), nil},
{`[\[\]{}()=]`, Operator, nil},
{`<<<`, Operator, nil},
{`<<-?\s*(\'?)\\?(\w+)[\w\W]+?\2`, LiteralString, nil},
{`&&|\|\|`, Operator, nil},
},
"data": {
{`(?s)\$?"(\\\\|\\[0-7]+|\\.|[^"\\$])*"`, LiteralStringDouble, nil},
{`"`, LiteralStringDouble, Push("string")},
{`(?s)\$'(\\\\|\\[0-7]+|\\.|[^'\\])*'`, LiteralStringSingle, nil},
{`(?s)'.*?'`, LiteralStringSingle, nil},
{`;`, Punctuation, nil},
{`&`, Punctuation, nil},
{`\|`, Punctuation, nil},
{`\s+`, Text, nil},
{`\d+(?= |$)`, LiteralNumber, nil},
{"[^=\\s\\[\\]{}()$\"\\'`\\\\<&|;]+", Text, nil},
{`<`, Text, nil},
},
"string": {
{`"`, LiteralStringDouble, Pop(1)},
{`(?s)(\\\\|\\[0-7]+|\\.|[^"\\$])+`, LiteralStringDouble, nil},
Include("interp"),
},
"curly": {
{`\}`, LiteralStringInterpol, Pop(1)},
{`:-`, Keyword, nil},
{`\w+`, NameVariable, nil},
{"[^}:\"\\'`$\\\\]+", Punctuation, nil},
{`:`, Punctuation, nil},
Include("root"),
},
"paren": {
{`\)`, Keyword, Pop(1)},
Include("root"),
},
"math": {
{`\)\)`, Keyword, Pop(1)},
{`[-+*/%^|&]|\*\*|\|\|`, Operator, nil},
{`\d+#\d+`, LiteralNumber, nil},
{`\d+#(?! )`, LiteralNumber, nil},
{`\d+`, LiteralNumber, nil},
Include("root"),
},
"backticks": {
{"`", LiteralStringBacktick, Pop(1)},
Include("root"),
},
},
).SetAnalyser(func(text string) float32 {
if bashAnalyserRe.FindString(text) != "" {
return 1.0
}
return 0.0
}))