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laevandus/FastfileParser.swift Secret

Last active Mar 1, 2021
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let descExpression = try! NSRegularExpression(pattern: "^\\s*desc [\"']{1}([^\"]*)[\"']{1}", options: [])
let description = (0..<lineIndex)
.prefixMap({ index -> String? in
// Get a line
let line = lines[index]
// Use regular expression
guard let match = descExpression.firstMatch(in: line) else { return nil }
// Regular expression contains a capture group, therefore looking for 2 ranges
guard match.numberOfRanges >= 2 else { return nil }
// When there are matches then extract description
guard let range = Range(match.range(at: 1), in: line) else { return nil }
return String(line[range])
.joined(separator: "\n")
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