source: node_modules/prismjs/components/prism-log.js

// This is a language definition for generic log files.
// Since there is no one log format, this language definition has to support all formats to some degree.
//
// Based on https://github.com/MTDL9/vim-log-highlighting

Prism.languages.log = {
        'string': {
                // Single-quoted strings must not be confused with plain text. E.g. Can't isn't Susan's Chris' toy
                pattern: /"(?:[^"\\\r\n]|\\.)*"|'(?![st] | \w)(?:[^'\\\r\n]|\\.)*'/,
                greedy: true,
        },

        'exception': {
                pattern: /(^|[^\w.])[a-z][\w.]*(?:Error|Exception):.*(?:(?:\r\n?|\n)[ \t]*(?:at[ \t].+|\.{3}.*|Caused by:.*))+(?:(?:\r\n?|\n)[ \t]*\.\.\. .*)?/,
                lookbehind: true,
                greedy: true,
                alias: ['javastacktrace', 'language-javastacktrace'],
                inside: Prism.languages['javastacktrace'] || {
                        'keyword': /\bat\b/,
                        'function': /[a-z_][\w$]*(?=\()/,
                        'punctuation': /[.:()]/
                }
        },

        'level': [
                {
                        pattern: /\b(?:ALERT|CRIT|CRITICAL|EMERG|EMERGENCY|ERR|ERROR|FAILURE|FATAL|SEVERE)\b/,
                        alias: ['error', 'important']
                },
                {
                        pattern: /\b(?:WARN|WARNING|WRN)\b/,
                        alias: ['warning', 'important']
                },
                {
                        pattern: /\b(?:DISPLAY|INF|INFO|NOTICE|STATUS)\b/,
                        alias: ['info', 'keyword']
                },
                {
                        pattern: /\b(?:DBG|DEBUG|FINE)\b/,
                        alias: ['debug', 'keyword']
                },
                {
                        pattern: /\b(?:FINER|FINEST|TRACE|TRC|VERBOSE|VRB)\b/,
                        alias: ['trace', 'comment']
                }
        ],

        'property': {
                pattern: /((?:^|[\]|])[ \t]*)[a-z_](?:[\w-]|\b\/\b)*(?:[. ]\(?\w(?:[\w-]|\b\/\b)*\)?)*:(?=\s)/im,
                lookbehind: true
        },

        'separator': {
                pattern: /(^|[^-+])-{3,}|={3,}|\*{3,}|- - /m,
                lookbehind: true,
                alias: 'comment'
        },

        'url': /\b(?:file|ftp|https?):\/\/[^\s|,;'"]*[^\s|,;'">.]/,
        'email': {
                pattern: /(^|\s)[-\w+.]+@[a-z][a-z0-9-]*(?:\.[a-z][a-z0-9-]*)+(?=\s)/,
                lookbehind: true,
                alias: 'url'
        },

        'ip-address': {
                pattern: /\b(?:\d{1,3}(?:\.\d{1,3}){3})\b/,
                alias: 'constant'
        },
        'mac-address': {
                pattern: /\b[a-f0-9]{2}(?::[a-f0-9]{2}){5}\b/i,
                alias: 'constant'
        },
        'domain': {
                pattern: /(^|\s)[a-z][a-z0-9-]*(?:\.[a-z][a-z0-9-]*)*\.[a-z][a-z0-9-]+(?=\s)/,
                lookbehind: true,
                alias: 'constant'
        },

        'uuid': {
                pattern: /\b[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\b/i,
                alias: 'constant'
        },
        'hash': {
                pattern: /\b(?:[a-f0-9]{32}){1,2}\b/i,
                alias: 'constant'
        },

        'file-path': {
                pattern: /\b[a-z]:[\\/][^\s|,;:(){}\[\]"']+|(^|[\s:\[\](>|])\.{0,2}\/\w[^\s|,;:(){}\[\]"']*/i,
                lookbehind: true,
                greedy: true,
                alias: 'string'
        },

        'date': {
                pattern: RegExp(
                        /\b\d{4}[-/]\d{2}[-/]\d{2}(?:T(?=\d{1,2}:)|(?=\s\d{1,2}:))/.source +
                        '|' +
                        /\b\d{1,4}[-/ ](?:\d{1,2}|Apr|Aug|Dec|Feb|Jan|Jul|Jun|Mar|May|Nov|Oct|Sep)[-/ ]\d{2,4}T?\b/.source +
                        '|' +
                        /\b(?:(?:Fri|Mon|Sat|Sun|Thu|Tue|Wed)(?:\s{1,2}(?:Apr|Aug|Dec|Feb|Jan|Jul|Jun|Mar|May|Nov|Oct|Sep))?|Apr|Aug|Dec|Feb|Jan|Jul|Jun|Mar|May|Nov|Oct|Sep)\s{1,2}\d{1,2}\b/.source,
                        'i'
                ),
                alias: 'number'
        },
        'time': {
                pattern: /\b\d{1,2}:\d{1,2}:\d{1,2}(?:[.,:]\d+)?(?:\s?[+-]\d{2}:?\d{2}|Z)?\b/,
                alias: 'number'
        },

        'boolean': /\b(?:false|null|true)\b/i,
        'number': {
                pattern: /(^|[^.\w])(?:0x[a-f0-9]+|0o[0-7]+|0b[01]+|v?\d[\da-f]*(?:\.\d+)*(?:e[+-]?\d+)?[a-z]{0,3}\b)\b(?!\.\w)/i,
                lookbehind: true
        },

        'operator': /[;:?<=>~/@!$%&+\-|^(){}*#]/,
        'punctuation': /[\[\].,]/
};