SwiftString
SwiftString is a lightweight string extension for Swift 3 and 4. This library was motivated by having to search StackOverflow for common string operations, and wanting them to be in one place with test coverage.
Note the original client side Swift 2 repo can be found here: https://github.com/amayne/SwiftString
This Fork
This fork is intended as a server side utility.
- It is Swift 3.x, 4.0 and Swift Package Manager (SPM) ready.
- Added sigificant test coverage
Swift 3.0.2, 3.1 only
If you are targeting Swift 3.0.2 or 3.1 only, please use the majorVersion:1 in your Package.swift file:
.Package(url: "https://github.com/iamjono/SwiftString.git", majorVersion: 1),This release works for both Swift 3.0.2 and 3.1, on macOS and Linux.
Swift 3.0.2, 3.1, 3.2 and Swift 4.0
If you have updated to Swift 4, or plan to in the near future, use the majorVersion:2 in your Package.swift file. This version brings compatibility with Swift 4, and is backwards compatible with the 3.x codebases.
.Package(url: "https://github.com/iamjono/SwiftString.git", majorVersion: 2),The latest release works for Swift 3.x and Swift 4 on macOS and Linux.
Usage
import SwiftStringMethods
between(left, right)
"<a>foo</a>".between("<a>", "</a>") // "foo"
"<a><a>foo</a></a>".between("<a>", "</a>") // "<a>foo</a>"
"<a>foo".between("<a>", "</a>") // nil
"Some strings } are very {weird}, dont you think?".between("{", "}") // "weird"
"<a></a>".between("<a>", "</a>") // nil
"<a>foo</a>".between("<a>", "<a>") // nilcamelize()
"os version".camelize() // "osVersion"
"HelloWorld".camelize() // "helloWorld"
"someword With Characters".camelize() // "somewordWithCharacters"
"data_rate".camelize() // "dataRate"
"background-color".camelize() // "backgroundColor"capitalize()
"hello world".capitalize() // "Hello World"chompLeft(string)
"foobar".chompLeft("foo") // "bar"
"foobar".chompLeft("bar") // "foo"chompRight(string)
"foobar".chompRight("bar") // "foo"
"foobar".chompRight("foo") // "bar"cleanPath()
var foo = "hello//world/..///stuff.txt"
foo.cleanPath() // foo == "hello/stuff.txt"cleanedPath()
"hello//world/..///stuff.txt".cleanedPath() // "hello/stuff.txt"collapseWhitespace()
" String \t libraries are \n\n\t fun\n! ".collapseWhitespace() // "String libraries are fun !")count(string)
"hi hi ho hey hihey".count("hi") // 3decodeHTML()
"The Weekend ‘King Of The Fall’".decodeHTML() // "The Weekend ‘King Of The Fall’"
"<strong> 4 < 5 & 3 > 2 .</strong> Price: 12 €. @ ".decodeHTML() // "<strong> 4 < 5 & 3 > 2 .</strong> Price: 12 €. @ "
"this is so "good"".decodeHTML() // "this is so \"good\""endsWith(suffix)
"hello world".endsWith("world") // true
"hello world".endsWith("foo") // falseensureLeft(prefix)
"/subdir".ensureLeft("/") // "/subdir"
"subdir".ensureLeft("/") // "/subdir"ensureRight(suffix)
"subdir/".ensureRight("/") // "subdir/"
"subdir".ensureRight("/") // "subdir/"extension
"/hello/world.txt".extension // "txt"
"/hello/world.tmp.txt".extension // "txt"file
"/hello/world.txt".file // "world.txt"
"/hello/there/".file // "there"fileName
"/hello/world.txt".fileName // "world"
"/hello/there/".fileName // "there"index(of: substring)
"hello".index(of: "hell"), // 0
"hello".index(of: "lo"), // 3
"hello".index(of: "world") // -1
"hellohello".index(of: "hel", after: 2) // 5indexOf(substring) - deprecated in favor of index(of:) above
"hello".indexOf("hell"), // 0
"hello".indexOf("lo"), // 3
"hello".indexOf("world") // nilinitials()
"First".initials(), // "F"
"First Last".initials(), // "FL"
"First Middle1 Middle2 Middle3 Last".initials() // "FMMML"initialsFirstAndLast()
"First Last".initialsFirstAndLast(), // "FL"
"First Middle1 Middle2 Middle3 Last".initialsFirstAndLast() // "FL"isAlpha()
"fdafaf3".isAlpha() // false
"afaf".isAlpha() // true
"dfdf--dfd".isAlpha() // falseisAlphaNumeric()
"afaf35353afaf".isAlphaNumeric() // true
"FFFF99fff".isAlphaNumeric() // true
"99".isAlphaNumeric() // true
"afff".isAlphaNumeric() // true
"-33".isAlphaNumeric() // false
"aaff..".isAlphaNumeric() // falseisEmpty()
" ".isEmpty() // true
"\t\t\t ".isEmpty() // true
"\n\n".isEmpty() // true
"helo".isEmpty() // falseisNumeric()
"abc".isNumeric() // false
"123a".isNumeric() // false
"1".isNumeric() // true
"22".isNumeric() // true
"33.0".isNumeric() // true
"-63.0".isNumeric() // truejoin(paths...)
var root = "/foo"
root.join("bar", "/baz", "..", "//somedata.txt") // root == "/foo/bar/somedata.txt"
var root = "/foo"
root.join(paths: ["bar", "/baz", "..", "//somedata.txt"]) // root == "/foo/bar/somedata.txt"joining(paths...)
"/foo".joining("bar", "/baz", "..", "//somedata.txt") // "/foo/bar/somedata.txt"
"/foo".joining(paths: ["bar", "/baz", "..", "//somedata.txt"]) // "/foo/bar/somedata.txt"lastIndex(of: substring)
"hellohellohello".lastIndex(of: "hell"), // 10
"hellohellohello".lastIndex(of: "lo"), // 13
"hellohellohello".lastIndex(of: "world") // -1
"hellohellohello".lastIndex(of: "hel", before: 10) // 5latinize()
"šÜįéïöç".latinize() // "sUieioc"
"crème brûlée".latinize() // "creme brulee"lines()
"test".lines() // ["test"]
"test\nsentence".lines() // ["test", "sentence"]
"test \nsentence".lines() // ["test ", "sentence"]pad(n, string)
"hello".pad(2) // " hello "
"hello".pad(1, "\t") // "\thello\t"padLeft(n, string)
"hello".padLeft(10) // " hello"
"what?".padLeft(2, "!") // "!!what?"padRight(n, string)
"hello".padRight(10) // "hello "
"hello".padRight(2, "!") // "hello!!"parent
"/hello/there/world.txt".parent // "/hello/there"
"/hello/there".parent // "/hello"startsWith(prefix)
"hello world".startsWith("hello") // true
"hello world".startsWith("foo") // falsesplit(separator)
"hello world".split(" ")[0] // "hello"
"hello world".split(" ")[1] // "world"
"helloworld".split(" ")[0] // "helloworld"times(n)
"hi".times(3) // "hihihi"
" ".times(10) // " "toBool()
"asdwads".toBool() // nil
"true".toBool() // true
"false".toBool() // falsetoFloat()
"asdwads".toFloat() // nil
"2.00".toFloat() // 2.0
"2".toFloat() // 2.0toInt()
"asdwads".toInt() // nil
"2.00".toInt() // 2
"2".toInt() // 2toDate()
"asdwads".toDate() // nil
"2014-06-03".toDate() // NSDatetoDateTime()
"asdwads".toDateTime() // nil
"2014-06-03 13:15:01".toDateTime() // NSDatetoDouble()
"asdwads".toDouble() // nil
"2.00".toDouble() // 2.0
"2".toDouble() // 2.0trimmedLeft()
" How are you? ".trimmedLeft() // "How are you? "trimmedRight()
" How are you? ".trimmedRight() // " How are you?"trimmed()
" How are you? ".trimmed() // "How are you?"slugify()
"Global Thermonuclear Warfare".slugify() // "global-thermonuclear-warfare"
"Crème brûlée".slugify() // "creme-brulee"stripPunctuation()
"My, st[ring] *full* of %punct)".stripPunctuation() // "My string full of punct"substring(startIndex, length)
"hello world".substring(0, length: 1) // "h"
"hello world".substring(0, length: 11) // "hello world"[subscript]
"hello world"[0...1] // "he"
"hello world"[0..<1] // "h"
"hello world"[0] // "h"
"hello world"[0...10] // "hello world"
"hello world"[safe: -1...1] // "he"
"hello world"[safe: 9...20] // "ld"Requirements
- Swift version 3.x or Swift 4. Please see notes above.
Installation
Install via Swift Package Manager
- Add the following to your
Package.swiftfile:
.Package(
url: "https://github.com/iamjono/SwiftString.git",
majorVersion: 2
),Then, regenerate your Xcode project:
swift package generate-xcodeproj
Install via Cocoapods
pod "String+Extensions"Author
Andrew Mayne, andrew@redbricklab.com
Swift 3 & 4 SPM module, Jonathan Guthrie, jono@guthrie.net.nz
Cocoapods, Koji Murata, malt.koji@gmail.com
License
SwiftString is available under the MIT license. See the LICENSE file for more info.