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|
(function (Prism) {
// Many of the following regexes will contain negated lookaheads like `[ \t]+(?![ \t])`. This is a trick to ensure
// that quantifiers behave *atomically*. Atomic quantifiers are necessary to prevent exponential backtracking.
var spaceAfterBackSlash =
/\\[\r\n](?:\s|\\[\r\n]|#.*(?!.))*(?![\s#]|\\[\r\n])/.source;
// At least one space, comment, or line break
var space = /(?:[ \t]+(?![ \t])(?:<SP_BS>)?|<SP_BS>)/.source.replace(
/<SP_BS>/g,
function () {
return spaceAfterBackSlash;
}
);
var string =
/"(?:[^"\\\r\n]|\\(?:\r\n|[\s\S]))*"|'(?:[^'\\\r\n]|\\(?:\r\n|[\s\S]))*'/
.source;
var option = /--[\w-]+=(?:<STR>|(?!["'])(?:[^\s\\]|\\.)+)/.source.replace(
/<STR>/g,
function () {
return string;
}
);
var stringRule = {
pattern: RegExp(string),
greedy: true,
};
var commentRule = {
pattern: /(^[ \t]*)#.*/m,
lookbehind: true,
greedy: true,
};
/**
* @param {string} source
* @param {string} flags
* @returns {RegExp}
*/
function re(source, flags) {
source = source
.replace(/<OPT>/g, function () {
return option;
})
.replace(/<SP>/g, function () {
return space;
});
return RegExp(source, flags);
}
Prism.languages.docker = {
instruction: {
pattern:
/(^[ \t]*)(?:ADD|ARG|CMD|COPY|ENTRYPOINT|ENV|EXPOSE|FROM|HEALTHCHECK|LABEL|MAINTAINER|ONBUILD|RUN|SHELL|STOPSIGNAL|USER|VOLUME|WORKDIR)(?=\s)(?:\\.|[^\r\n\\])*(?:\\$(?:\s|#.*$)*(?![\s#])(?:\\.|[^\r\n\\])*)*/im,
lookbehind: true,
greedy: true,
inside: {
options: {
pattern: re(
/(^(?:ONBUILD<SP>)?\w+<SP>)<OPT>(?:<SP><OPT>)*/.source,
'i'
),
lookbehind: true,
greedy: true,
inside: {
property: {
pattern: /(^|\s)--[\w-]+/,
lookbehind: true,
},
string: [
stringRule,
{
pattern: /(=)(?!["'])(?:[^\s\\]|\\.)+/,
lookbehind: true,
},
],
operator: /\\$/m,
punctuation: /=/,
},
},
keyword: [
{
// https://docs.docker.com/engine/reference/builder/#healthcheck
pattern: re(
/(^(?:ONBUILD<SP>)?HEALTHCHECK<SP>(?:<OPT><SP>)*)(?:CMD|NONE)\b/
.source,
'i'
),
lookbehind: true,
greedy: true,
},
{
// https://docs.docker.com/engine/reference/builder/#from
pattern: re(
/(^(?:ONBUILD<SP>)?FROM<SP>(?:<OPT><SP>)*(?!--)[^ \t\\]+<SP>)AS/
.source,
'i'
),
lookbehind: true,
greedy: true,
},
{
// https://docs.docker.com/engine/reference/builder/#onbuild
pattern: re(/(^ONBUILD<SP>)\w+/.source, 'i'),
lookbehind: true,
greedy: true,
},
{
pattern: /^\w+/,
greedy: true,
},
],
comment: commentRule,
string: stringRule,
variable: /\$(?:\w+|\{[^{}"'\\]*\})/,
operator: /\\$/m,
},
},
comment: commentRule,
};
Prism.languages.dockerfile = Prism.languages.docker;
})(Prism);
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