Example: File Processing

A script that parses a log file and extracts formatted records:

use file
use regex

let logFile = "app.log"
if not file.exists(logFile)
    # Seed dummy log
    file.write(logFile, "[INFO] Started\n[ERROR] DB Connection failed\n[INFO] Retrying\n")
end

let pattern = regex.compile("\\[(INFO|ERROR)\\] (.*)")
let lines = file.readLines(logFile)

for idx, line in enumerate(lines)
    let match = pattern.search(line)
    if !isNull(match)
        let level = match.group(1)
        let msg = match.group(2)
        print("Line ${idx + 1}: [${level}] - Message: ${msg}")
    end
end