Source file src/github.com/alecthomas/chroma/v2/lexers/docker.go

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

     1  package lexers
     2  
     3  import (
     4  	. "github.com/alecthomas/chroma/v2" // nolint
     5  )
     6  
     7  // Docker lexer.
     8  var Docker = Register(MustNewLexer(
     9  	&Config{
    10  		Name:            "Docker",
    11  		Aliases:         []string{"docker", "dockerfile"},
    12  		Filenames:       []string{"Dockerfile", "Dockerfile.*", "*.docker"},
    13  		MimeTypes:       []string{"text/x-dockerfile-config"},
    14  		CaseInsensitive: true,
    15  	},
    16  	dockerRules,
    17  ))
    18  
    19  func dockerRules() Rules {
    20  	return Rules{
    21  		"root": {
    22  			{`#.*`, Comment, nil},
    23  			{`(ONBUILD)((?:\s*\\?\s*))`, ByGroups(Keyword, Using("Bash")), nil},
    24  			{`(HEALTHCHECK)(((?:\s*\\?\s*)--\w+=\w+(?:\s*\\?\s*))*)`, ByGroups(Keyword, Using("Bash")), nil},
    25  			{`(VOLUME|ENTRYPOINT|CMD|SHELL)((?:\s*\\?\s*))(\[.*?\])`, ByGroups(Keyword, Using("Bash"), Using("JSON")), nil},
    26  			{`(LABEL|ENV|ARG)((?:(?:\s*\\?\s*)\w+=\w+(?:\s*\\?\s*))*)`, ByGroups(Keyword, Using("Bash")), nil},
    27  			{`((?:FROM|MAINTAINER|EXPOSE|WORKDIR|USER|STOPSIGNAL)|VOLUME)\b(.*)`, ByGroups(Keyword, LiteralString), nil},
    28  			{`((?:RUN|CMD|ENTRYPOINT|ENV|ARG|LABEL|ADD|COPY))`, Keyword, nil},
    29  			{`(.*\\\n)*.+`, Using("Bash"), nil},
    30  		},
    31  	}
    32  }
    33  

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