html.go

Documentation: github.com/alecthomas/chroma/v2/lexers

     1  package lexers
     2  
     3  import (
     4  	. "github.com/alecthomas/chroma/v2" // nolint
     5  )
     6  
     7  // HTML lexer.
     8  var HTML = Register(MustNewLexer(
     9  	&Config{
    10  		Name:            "HTML",
    11  		Aliases:         []string{"html"},
    12  		Filenames:       []string{"*.html", "*.htm", "*.xhtml", "*.xslt"},
    13  		MimeTypes:       []string{"text/html", "application/xhtml+xml"},
    14  		NotMultiline:    true,
    15  		DotAll:          true,
    16  		CaseInsensitive: true,
    17  	},
    18  	htmlRules,
    19  ))
    20  
    21  func htmlRules() Rules {
    22  	return Rules{
    23  		"root": {
    24  			{`[^<&]+`, Text, nil},
    25  			{`&\S*?;`, NameEntity, nil},
    26  			{`\<\!\[CDATA\[.*?\]\]\>`, CommentPreproc, nil},
    27  			{`<!--`, Comment, Push("comment")},
    28  			{`<\?.*?\?>`, CommentPreproc, nil},
    29  			{`<![^>]*>`, CommentPreproc, nil},
    30  			{`(<)(\s*)(script)(\s*)`, ByGroups(Punctuation, Text, NameTag, Text), Push("script-content", "tag")},
    31  			{`(<)(\s*)(style)(\s*)`, ByGroups(Punctuation, Text, NameTag, Text), Push("style-content", "tag")},
    32  			{`(<)(\s*)([\w:.-]+)`, ByGroups(Punctuation, Text, NameTag), Push("tag")},
    33  			{`(<)(\s*)(/)(\s*)([\w:.-]+)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation, Text, NameTag, Text, Punctuation), nil},
    34  		},
    35  		"comment": {
    36  			{`[^-]+`, Comment, nil},
    37  			{`-->`, Comment, Pop(1)},
    38  			{`-`, Comment, nil},
    39  		},
    40  		"tag": {
    41  			{`\s+`, Text, nil},
    42  			{`([\w:-]+\s*)(=)(\s*)`, ByGroups(NameAttribute, Operator, Text), Push("attr")},
    43  			{`[\w:-]+`, NameAttribute, nil},
    44  			{`(/?)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation), Pop(1)},
    45  		},
    46  		"script-content": {
    47  			{`(<)(\s*)(/)(\s*)(script)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation, Text, NameTag, Text, Punctuation), Pop(1)},
    48  			{`.+?(?=<\s*/\s*script\s*>)`, Using("Javascript"), nil},
    49  		},
    50  		"style-content": {
    51  			{`(<)(\s*)(/)(\s*)(style)(\s*)(>)`, ByGroups(Punctuation, Text, Punctuation, Text, NameTag, Text, Punctuation), Pop(1)},
    52  			{`.+?(?=<\s*/\s*style\s*>)`, Using("CSS"), nil},
    53  		},
    54  		"attr": {
    55  			{`".*?"`, LiteralString, Pop(1)},
    56  			{`'.*?'`, LiteralString, Pop(1)},
    57  			{`[^\s>]+`, LiteralString, Pop(1)},
    58  		},
    59  	}
    60  }
    61
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