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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2021-2022 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
import ArgumentParser
import _RegexParser
import _StringProcessing
@main
@available(SwiftStdlib 5.8, *)
struct RegexTester: ParsableCommand {
typealias MatchFunctionType = (String) throws -> Regex<AnyRegexOutput>.Match?
@Argument(help: "The regex pattern to test.")
var pattern: String
@Argument(help: "One or more input strings to test against <pattern>.")
var inputs: [String]
@Flag(
name: [.customShort("p"), .customLong("partial")],
help: "Allow partial matches.")
var allowPartialMatch: Bool = false
mutating func run() throws {
print("Using pattern \(pattern.halfWidthCornerQuoted)")
let regex = try Regex(pattern)
for input in inputs {
print("Input \(input.halfWidthCornerQuoted)")
let matchFunc: MatchFunctionType = allowPartialMatch
? regex.firstMatch(in:)
: regex.wholeMatch(in:)
if let result = try matchFunc(input) {
print(" matched: \(result.0.halfWidthCornerQuoted)")
} else {
print(" no match")
}
}
}
}
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