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bash.js (3335B)

      1 /*
      2 Language: Bash
      3 Author: vah <vahtenberg@gmail.com>
      4 Contributrors: Benjamin Pannell <contact@sierrasoftworks.com>
      5 Website: https://www.gnu.org/software/bash/
      6 Category: common
      7 */
      8 
      9 /** @type LanguageFn */
     10 function bash(hljs) {
     11   const VAR = {};
     12   const BRACED_VAR = {
     13     begin: /\$\{/, end:/\}/,
     14     contains: [
     15       { begin: /:-/, contains: [VAR] } // default values
     16     ]
     17   };
     18   Object.assign(VAR,{
     19     className: 'variable',
     20     variants: [
     21       {begin: /\$[\w\d#@][\w\d_]*/},
     22       BRACED_VAR
     23     ]
     24   });
     25 
     26   const SUBST = {
     27     className: 'subst',
     28     begin: /\$\(/, end: /\)/,
     29     contains: [hljs.BACKSLASH_ESCAPE]
     30   };
     31   const QUOTE_STRING = {
     32     className: 'string',
     33     begin: /"/, end: /"/,
     34     contains: [
     35       hljs.BACKSLASH_ESCAPE,
     36       VAR,
     37       SUBST
     38     ]
     39   };
     40   SUBST.contains.push(QUOTE_STRING);
     41   const ESCAPED_QUOTE = {
     42     className: '',
     43     begin: /\\"/
     44 
     45   };
     46   const APOS_STRING = {
     47     className: 'string',
     48     begin: /'/, end: /'/
     49   };
     50   const ARITHMETIC = {
     51     begin: /\$\(\(/,
     52     end: /\)\)/,
     53     contains: [
     54       { begin: /\d+#[0-9a-f]+/, className: "number" },
     55       hljs.NUMBER_MODE,
     56       VAR
     57     ]
     58   };
     59   const SH_LIKE_SHELLS = [
     60     "fish",
     61     "bash",
     62     "zsh",
     63     "sh",
     64     "csh",
     65     "ksh",
     66     "tcsh",
     67     "dash",
     68     "scsh",
     69   ];
     70   const KNOWN_SHEBANG = hljs.SHEBANG({
     71     binary: `(${SH_LIKE_SHELLS.join("|")})`,
     72     relevance: 10
     73   });
     74   const FUNCTION = {
     75     className: 'function',
     76     begin: /\w[\w\d_]*\s*\(\s*\)\s*\{/,
     77     returnBegin: true,
     78     contains: [hljs.inherit(hljs.TITLE_MODE, {begin: /\w[\w\d_]*/})],
     79     relevance: 0
     80   };
     81 
     82   return {
     83     name: 'Bash',
     84     aliases: ['sh', 'zsh'],
     85     keywords: {
     86       $pattern: /\b-?[a-z\._-]+\b/,
     87       keyword:
     88         'if then else elif fi for while in do done case esac function',
     89       literal:
     90         'true false',
     91       built_in:
     92         // Shell built-ins
     93         // http://www.gnu.org/software/bash/manual/html_node/Shell-Builtin-Commands.html
     94         'break cd continue eval exec exit export getopts hash pwd readonly return shift test times ' +
     95         'trap umask unset ' +
     96         // Bash built-ins
     97         'alias bind builtin caller command declare echo enable help let local logout mapfile printf ' +
     98         'read readarray source type typeset ulimit unalias ' +
     99         // Shell modifiers
    100         'set shopt ' +
    101         // Zsh built-ins
    102         'autoload bg bindkey bye cap chdir clone comparguments compcall compctl compdescribe compfiles ' +
    103         'compgroups compquote comptags comptry compvalues dirs disable disown echotc echoti emulate ' +
    104         'fc fg float functions getcap getln history integer jobs kill limit log noglob popd print ' +
    105         'pushd pushln rehash sched setcap setopt stat suspend ttyctl unfunction unhash unlimit ' +
    106         'unsetopt vared wait whence where which zcompile zformat zftp zle zmodload zparseopts zprof ' +
    107         'zpty zregexparse zsocket zstyle ztcp',
    108       _:
    109         '-ne -eq -lt -gt -f -d -e -s -l -a' // relevance booster
    110     },
    111     contains: [
    112       KNOWN_SHEBANG, // to catch known shells and boost relevancy
    113       hljs.SHEBANG(), // to catch unknown shells but still highlight the shebang
    114       FUNCTION,
    115       ARITHMETIC,
    116       hljs.HASH_COMMENT_MODE,
    117       QUOTE_STRING,
    118       ESCAPED_QUOTE,
    119       APOS_STRING,
    120       VAR
    121     ]
    122   };
    123 }
    124 
    125 module.exports = bash;