const regex = /^([0-9]{2}\s[A-Za-z]{3}\s[0-9]{4}\s[0-9]{2}:[0-9]{2}:[0-9]{2}(?:,[0-9]{3})?)\s(?:\^\[\[[0-9]{2}m)\[([A-Za-z]+)\](?:\^\[\[m)\s*([0-9a-fA-F\-]*)\s\(([^\)]+)\)\s((?:[a-zA-Z0-9-]+\.)+[A-Za-z0-9$]+):\s(?:\s\-\s)?(?:(?!^[0-9]{2}\s[A-Za-z]{3}\s[0-9]{4}\s[0-9]{2}:[0-9]{2}:[0-9]{2}).*(?:\r?\n)?)*/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^([0-9]{2}\\s[A-Za-z]{3}\\s[0-9]{4}\\s[0-9]{2}:[0-9]{2}:[0-9]{2}(?:,[0-9]{3})?)\\s(?:\\^\\[\\[[0-9]{2}m)\\[([A-Za-z]+)\\](?:\\^\\[\\[m)\\s*([0-9a-fA-F\\-]*)\\s\\(([^\\)]+)\\)\\s((?:[a-zA-Z0-9-]+\\.)+[A-Za-z0-9$]+):\\s(?:\\s\\-\\s)?(?:(?!^[0-9]{2}\\s[A-Za-z]{3}\\s[0-9]{4}\\s[0-9]{2}:[0-9]{2}:[0-9]{2}).*(?:\\r?\\n)?)*', 'gm')
const str = `02 Jan 2018 05:25:56,546 ^[[32m[TEXT]^[[m aabb33-ddee33-54321 (host-1-usa-east) this.is.sample.log: service is responding normal
extra line 1
extra line 2
03 Jan 2018 08:25:56,546 ^[[32m[TEXT]^[[m aabb33-ddee33-54321 (host-1-usa-east) this.is.sample.log: service is responding normal`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions