| 1 | (function (Prism) {
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| 2 |
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| 3 | // Many of the following regexes will contain negated lookaheads like `[ \t]+(?![ \t])`. This is a trick to ensure
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| 4 | // that quantifiers behave *atomically*. Atomic quantifiers are necessary to prevent exponential backtracking.
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| 5 |
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| 6 | var spaceAfterBackSlash = /\\[\r\n](?:\s|\\[\r\n]|#.*(?!.))*(?![\s#]|\\[\r\n])/.source;
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| 7 | // At least one space, comment, or line break
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| 8 | var space = /(?:[ \t]+(?![ \t])(?:<SP_BS>)?|<SP_BS>)/.source
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| 9 | .replace(/<SP_BS>/g, function () { return spaceAfterBackSlash; });
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| 10 |
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| 11 | var string = /"(?:[^"\\\r\n]|\\(?:\r\n|[\s\S]))*"|'(?:[^'\\\r\n]|\\(?:\r\n|[\s\S]))*'/.source;
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| 12 | var option = /--[\w-]+=(?:<STR>|(?!["'])(?:[^\s\\]|\\.)+)/.source.replace(/<STR>/g, function () { return string; });
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| 13 |
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| 14 | var stringRule = {
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| 15 | pattern: RegExp(string),
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| 16 | greedy: true
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| 17 | };
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| 18 | var commentRule = {
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| 19 | pattern: /(^[ \t]*)#.*/m,
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| 20 | lookbehind: true,
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| 21 | greedy: true
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| 22 | };
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| 23 |
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| 24 | /**
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| 25 | * @param {string} source
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| 26 | * @param {string} flags
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| 27 | * @returns {RegExp}
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| 28 | */
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| 29 | function re(source, flags) {
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| 30 | source = source
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| 31 | .replace(/<OPT>/g, function () { return option; })
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| 32 | .replace(/<SP>/g, function () { return space; });
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| 33 |
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| 34 | return RegExp(source, flags);
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| 35 | }
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| 36 |
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| 37 | Prism.languages.docker = {
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| 38 | 'instruction': {
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| 39 | pattern: /(^[ \t]*)(?:ADD|ARG|CMD|COPY|ENTRYPOINT|ENV|EXPOSE|FROM|HEALTHCHECK|LABEL|MAINTAINER|ONBUILD|RUN|SHELL|STOPSIGNAL|USER|VOLUME|WORKDIR)(?=\s)(?:\\.|[^\r\n\\])*(?:\\$(?:\s|#.*$)*(?![\s#])(?:\\.|[^\r\n\\])*)*/im,
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| 40 | lookbehind: true,
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| 41 | greedy: true,
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| 42 | inside: {
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| 43 | 'options': {
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| 44 | pattern: re(/(^(?:ONBUILD<SP>)?\w+<SP>)<OPT>(?:<SP><OPT>)*/.source, 'i'),
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| 45 | lookbehind: true,
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| 46 | greedy: true,
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| 47 | inside: {
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| 48 | 'property': {
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| 49 | pattern: /(^|\s)--[\w-]+/,
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| 50 | lookbehind: true
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| 51 | },
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| 52 | 'string': [
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| 53 | stringRule,
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| 54 | {
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| 55 | pattern: /(=)(?!["'])(?:[^\s\\]|\\.)+/,
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| 56 | lookbehind: true
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| 57 | }
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| 58 | ],
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| 59 | 'operator': /\\$/m,
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| 60 | 'punctuation': /=/
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| 61 | }
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| 62 | },
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| 63 | 'keyword': [
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| 64 | {
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| 65 | // https://docs.docker.com/engine/reference/builder/#healthcheck
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| 66 | pattern: re(/(^(?:ONBUILD<SP>)?HEALTHCHECK<SP>(?:<OPT><SP>)*)(?:CMD|NONE)\b/.source, 'i'),
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| 67 | lookbehind: true,
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| 68 | greedy: true
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| 69 | },
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| 70 | {
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| 71 | // https://docs.docker.com/engine/reference/builder/#from
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| 72 | pattern: re(/(^(?:ONBUILD<SP>)?FROM<SP>(?:<OPT><SP>)*(?!--)[^ \t\\]+<SP>)AS/.source, 'i'),
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| 73 | lookbehind: true,
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| 74 | greedy: true
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| 75 | },
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| 76 | {
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| 77 | // https://docs.docker.com/engine/reference/builder/#onbuild
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| 78 | pattern: re(/(^ONBUILD<SP>)\w+/.source, 'i'),
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| 79 | lookbehind: true,
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| 80 | greedy: true
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| 81 | },
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| 82 | {
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| 83 | pattern: /^\w+/,
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| 84 | greedy: true
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| 85 | }
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| 86 | ],
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| 87 | 'comment': commentRule,
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| 88 | 'string': stringRule,
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| 89 | 'variable': /\$(?:\w+|\{[^{}"'\\]*\})/,
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| 90 | 'operator': /\\$/m
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| 91 | }
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| 92 | },
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| 93 | 'comment': commentRule
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| 94 | };
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| 95 |
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| 96 | Prism.languages.dockerfile = Prism.languages.docker;
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| 97 |
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| 98 | }(Prism));
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