1 package b
2
3 import (
4 "regexp"
5
6 . "github.com/alecthomas/chroma"
7 "github.com/alecthomas/chroma/lexers/internal"
8 )
9
10
11 var bashAnalyserRe = regexp.MustCompile(`(?m)^#!.*/bin/(?:env |)(?:bash|zsh|sh|ksh)`)
12
13
14 var Bash = internal.Register(MustNewLazyLexer(
15 &Config{
16 Name: "Bash",
17 Aliases: []string{"bash", "sh", "ksh", "zsh", "shell"},
18 Filenames: []string{"*.sh", "*.ksh", "*.bash", "*.ebuild", "*.eclass", ".env", "*.env", "*.exheres-0", "*.exlib", "*.zsh", "*.zshrc", ".bashrc", "bashrc", ".bash_*", "bash_*", "zshrc", ".zshrc", "PKGBUILD"},
19 MimeTypes: []string{"application/x-sh", "application/x-shellscript"},
20 },
21 bashRules,
22 ).SetAnalyser(func(text string) float32 {
23 if bashAnalyserRe.FindString(text) != "" {
24 return 1.0
25 }
26 return 0.0
27 }))
28
29 func bashRules() Rules {
30 return Rules{
31 "root": {
32 Include("basic"),
33 {"`", LiteralStringBacktick, Push("backticks")},
34 Include("data"),
35 Include("interp"),
36 },
37 "interp": {
38 {`\$\(\(`, Keyword, Push("math")},
39 {`\$\(`, Keyword, Push("paren")},
40 {`\$\{#?`, LiteralStringInterpol, Push("curly")},
41 {`\$[a-zA-Z_]\w*`, NameVariable, nil},
42 {`\$(?:\d+|[#$?!_*@-])`, NameVariable, nil},
43 {`\$`, Text, nil},
44 },
45 "basic": {
46 {`\b(if|fi|else|while|do|done|for|then|return|function|case|select|continue|until|esac|elif)(\s*)\b`, ByGroups(Keyword, Text), nil},
47 {"\\b(alias|bg|bind|break|builtin|caller|cd|command|compgen|complete|declare|dirs|disown|echo|enable|eval|exec|exit|export|false|fc|fg|getopts|hash|help|history|jobs|kill|let|local|logout|popd|printf|pushd|pwd|read|readonly|set|shift|shopt|source|suspend|test|time|times|trap|true|type|typeset|ulimit|umask|unalias|unset|wait)(?=[\\s)`])", NameBuiltin, nil},
48 {`\A#!.+\n`, CommentPreproc, nil},
49 {`#.*(\S|$)`, CommentSingle, nil},
50 {`\\[\w\W]`, LiteralStringEscape, nil},
51 {`(\b\w+)(\s*)(\+?=)`, ByGroups(NameVariable, Text, Operator), nil},
52 {`[\[\]{}()=]`, Operator, nil},
53 {`<<<`, Operator, nil},
54 {`<<-?\s*(\'?)\\?(\w+)[\w\W]+?\2`, LiteralString, nil},
55 {`&&|\|\|`, Operator, nil},
56 },
57 "data": {
58 {`(?s)\$?"(\\\\|\\[0-7]+|\\.|[^"\\$])*"`, LiteralStringDouble, nil},
59 {`"`, LiteralStringDouble, Push("string")},
60 {`(?s)\$'(\\\\|\\[0-7]+|\\.|[^'\\])*'`, LiteralStringSingle, nil},
61 {`(?s)'.*?'`, LiteralStringSingle, nil},
62 {`;`, Punctuation, nil},
63 {`&`, Punctuation, nil},
64 {`\|`, Punctuation, nil},
65 {`\s+`, Text, nil},
66 {`\d+(?= |$)`, LiteralNumber, nil},
67 {"[^=\\s\\[\\]{}()$\"\\'`\\\\<&|;]+", Text, nil},
68 {`<`, Text, nil},
69 },
70 "string": {
71 {`"`, LiteralStringDouble, Pop(1)},
72 {`(?s)(\\\\|\\[0-7]+|\\.|[^"\\$])+`, LiteralStringDouble, nil},
73 Include("interp"),
74 },
75 "curly": {
76 {`\}`, LiteralStringInterpol, Pop(1)},
77 {`:-`, Keyword, nil},
78 {`\w+`, NameVariable, nil},
79 {"[^}:\"\\'`$\\\\]+", Punctuation, nil},
80 {`:`, Punctuation, nil},
81 Include("root"),
82 },
83 "paren": {
84 {`\)`, Keyword, Pop(1)},
85 Include("root"),
86 },
87 "math": {
88 {`\)\)`, Keyword, Pop(1)},
89 {`[-+*/%^|&]|\*\*|\|\|`, Operator, nil},
90 {`\d+#\d+`, LiteralNumber, nil},
91 {`\d+#(?! )`, LiteralNumber, nil},
92 {`\d+`, LiteralNumber, nil},
93 Include("root"),
94 },
95 "backticks": {
96 {"`", LiteralStringBacktick, Pop(1)},
97 Include("root"),
98 },
99 }
100 }
101
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