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Adding some helpful string extensions
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Erik Sargent
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May 17, 2017
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // | ||
| // StringTests.swift | ||
| // LKAPI | ||
| // | ||
| // Created by Erik Sargent on 5/17/17. | ||
| // Copyright © 2017 CocoaPods. All rights reserved. | ||
| // | ||
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| import XCTest | ||
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| class StringTests: XCTestCase { | ||
| let camel = "thisIsWonderfulCamelCase" | ||
| let snakedCamel = "this_is_wonderful_camel_case" | ||
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| let SuperCamel = "ThisIsWonderfulCamelCase" | ||
| let snakedSuperCamel = "this_is_wonderful_camel_case" | ||
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| let snake = "this_is_horrible_snake_case" | ||
| let cameledSnake = "thisIsHorribleSnakeCase" | ||
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| let capitalSnake = "This_Is_Horrible_Snake_Case" | ||
| let cameledCapitalSnake = "ThisIsHorribleSnakeCase" | ||
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| let spaced = "this is what we are used to" | ||
| let blank = "" | ||
| let emoji = "😀_😃" | ||
| let cameledEmoji = "😀😃" | ||
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| let kata = "カ_ヌ" | ||
| let cameledKata = "カヌ" | ||
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| let accented = "résumé" | ||
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| let date = "2017-04-03" | ||
| let dateTime = "2017-5-4T02:40:90" | ||
| let dateTimeZ = "2017-5-4T02:40:90Z" | ||
| let dateTimeZone = "2017-5-4T02:40:90-0700" | ||
| let dateGarbage = "2017-5-4stuff" | ||
| let dateTimeGarbage = "2017-5-4T02:40:90Stuff" | ||
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| func testToCamel() { | ||
| XCTAssertEqual(camel.toCamel, camel) | ||
| XCTAssertEqual(SuperCamel.toCamel, SuperCamel) | ||
| XCTAssertEqual(snake.toCamel, cameledSnake) | ||
| XCTAssertEqual(capitalSnake.toCamel, cameledCapitalSnake) | ||
| XCTAssertEqual(spaced.toCamel, spaced) | ||
| XCTAssertEqual(blank.toCamel, blank) | ||
| XCTAssertEqual(emoji.toCamel, cameledEmoji) | ||
| XCTAssertEqual(kata.toCamel, cameledKata) | ||
| XCTAssertEqual(accented.toCamel, accented) | ||
| } | ||
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| func testToSnake() { | ||
| XCTAssertEqual(camel.toSnake, snakedCamel) | ||
| XCTAssertEqual(SuperCamel.toSnake, snakedSuperCamel) | ||
| XCTAssertEqual(snake.toSnake, snake) | ||
| XCTAssertEqual(capitalSnake.toSnake, capitalSnake.lowercased()) | ||
| XCTAssertEqual(spaced.toSnake, spaced) | ||
| XCTAssertEqual(blank.toSnake, blank) | ||
| XCTAssertEqual(emoji.toSnake, emoji) | ||
| XCTAssertEqual(kata.toSnake, kata) | ||
| XCTAssertEqual(accented.toSnake, accented) | ||
| } | ||
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| func testIsDate() { | ||
| XCTAssertTrue(date.isDate) | ||
| XCTAssertFalse(dateTime.isDate) | ||
| XCTAssertFalse(dateTimeZ.isDate) | ||
| XCTAssertFalse(dateTimeZone.isDate) | ||
| XCTAssertFalse(dateGarbage.isDate) | ||
| XCTAssertFalse(dateTimeGarbage.isDate) | ||
| } | ||
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| func testIsDateTime() { | ||
| XCTAssertFalse(date.isDateTime) | ||
| XCTAssertTrue(dateTime.isDateTime) | ||
| XCTAssertTrue(dateTimeZ.isDateTime) | ||
| XCTAssertTrue(dateTimeZone.isDateTime) | ||
| XCTAssertFalse(dateGarbage.isDateTime) | ||
| XCTAssertFalse(dateTimeGarbage.isDateTime) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // | ||
| // String.swift | ||
| // Pods | ||
| // | ||
| // Created by Erik Sargent on 5/17/17. | ||
| // | ||
| // | ||
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| import Foundation | ||
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| extension String { | ||
| public var toCamel: String { | ||
| let comps = self.components(separatedBy: "_") | ||
| let notFirst = comps.dropFirst() | ||
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| guard !comps.isEmpty else { | ||
| return "" | ||
| } | ||
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| var value = comps.first! | ||
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| notFirst.forEach { comp in | ||
| value += comp.capitalized | ||
| } | ||
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| return value | ||
| } | ||
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| public var toSnake: String { | ||
| var value = self | ||
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| while true { | ||
| if let range = value.rangeOfCharacter(from: .uppercaseLetters) { | ||
| var letter = value.substring(with: range).lowercased() | ||
| if value.distance(from: value.startIndex, to: range.lowerBound) > 0 && !value.substring(with: value.index(before: range.lowerBound)..<range.upperBound).contains("_") { | ||
| letter = "_" + letter | ||
| } | ||
| value.replaceSubrange(range, with: letter) | ||
| } else { | ||
| break | ||
| } | ||
| } | ||
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| return value | ||
| } | ||
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| public var isDate: Bool { | ||
| guard let regex = try? NSRegularExpression(pattern: "^\\d{1,4}-\\d{1,2}-\\d{1,2}$", options: []) else { | ||
| return false | ||
| } | ||
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| let matches = regex.matches(in: self, options: [], range: NSRange(location: 0, length: self.characters.count)) | ||
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| return matches.count > 0 | ||
| } | ||
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| public var isDateTime: Bool { | ||
| guard let regex = try? NSRegularExpression(pattern: "^\\d{1,4}-\\d{1,2}-\\d{1,2}T\\d\\d:\\d\\d:\\d\\d(Z|-\\d\\d\\d\\d)?$", options: []) else { | ||
| return false | ||
| } | ||
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| let matches = regex.matches(in: self, options: [], range: NSRange(location: 0, length: self.characters.count)) | ||
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| return matches.count > 0 | ||
| } | ||
| } |