A lightweight string extension for Swift

JGString

JGString is a lightweight string extension for Swift.

Installation

JGString is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "JGString"

Usage

import JGString

Methods

between(left, right)

"<a>foo</a>".between(left: "<a>", "</a>") // "foo"
"<a><a>foo</a></a>".between(left: "<a>", "</a>") // "<a>foo</a>"
"<a>foo".between(left: "<a>", "</a>") // nil
"Some strings } are very {weird}, dont you think?".between(left: "{", "}") // "weird"
"<a></a>".between(left: "<a>", "</a>") // nil
"<a>foo</a>".between(left: "<a>", "<a>") // nil

camelize()

"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(prefix: "foo") // "bar"
"foobar".chompLeft(prefix: "bar") // "foo"

chompRight(string)

"foobar".chompRight("bar") // "foo"
"foobar".chompRight("foo") // "bar"

collapseWhitespace()

"  String   \t libraries are   \n\n\t fun\n!  ".collapseWhitespace() // "String libraries are fun !")

contains(substring)

"foobar".contains("foo") // true
"foobar".contains("bar") // true
"foobar".contains("something") // false

count(string)

"hi hi ho hey hihey".count(substring: "hi") // 3

decodeHTML()

"The Weekend &#8216;King Of The Fall&#8217;".decodeHTML() // "The Weekend ‘King Of The Fall’"
"<strong> 4 &lt; 5 &amp; 3 &gt; 2 .</strong> Price: 12 &#x20ac;.  &#64; ".decodeHTML() // "<strong> 4 < 5 & 3 > 2 .</strong> Price: 12 €.  @ "
"this is so &quot;good&quot;".decodeHTML() // "this is so \"good\""

endsWith(suffix)

"hello world".endsWith(suffix: "world") // true
"hello world".endsWith(suffix: "foo") // false

ensureLeft(prefix)

"/subdir".ensureLeft(prefix: "/") // "/subdir"
"subdir".ensureLeft(prefix: "/") // "/subdir"

ensureRight(suffix)

"subdir/".ensureRight(suffix: "/") // "subdir/"
"subdir".ensureRight(suffix: "/") // "subdir/"

indexOf(substring)

"hello".indexOf(substring: "hell"), // 0
"hello".indexOf(substring: "lo"), // 3
"hello".indexOf(substring: "world") // nil

initials()

"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() // false

isAlphaNumeric()

"afaf35353afaf".isAlphaNumeric() // true
"FFFF99fff".isAlphaNumeric() // true
"99".isAlphaNumeric() // true
"afff".isAlphaNumeric() // true
"-33".isAlphaNumeric() // false
"aaff..".isAlphaNumeric() // false

isEmpty()

" ".isEmpty() // true
"\t\t\t ".isEmpty() // true
"\n\n".isEmpty() // true
"helo".isEmpty() // false

isNumeric()

"abc".isNumeric() // false
"123a".isNumeric() // false
"1".isNumeric() // true
"22".isNumeric() // true
"33.0".isNumeric() // true
"-63.0".isNumeric() // true

join(sequence)

",".join(elements: [1,2,3]) // "1,2,3"
",".join(elements: []) // ""
",".join(elements: ["a","b","c"]) // "a,b,c"
"! ".join(elements: ["hey","who are you?"]) // "hey! who are you?"

latinize()

"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!!"

startsWith(prefix)

"hello world".startsWith(prefix: "hello") // true
"hello world".startsWith(prefix: "foo") // false

split(separator)

"hello world".split(separator: " ")[0] // "hello"
"hello world".split(separator: " ")[1] // "world"
"helloworld".split(separator: " ")[0] // "helloworld"

times(n)

"hi".times(3) // "hihihi"
" ".times(10) // "          "

toBool()

"asdwads".toBool() // nil
"true".toBool() // true
"false".toBool() // false

toFloat()

"asdwads".toFloat() // nil
"2.00".toFloat() // 2.0
"2".toFloat() // 2.0

toInt()

"asdwads".toInt() // nil
"2.00".toInt() // 2
"2".toInt() // 2

toDate()

"asdwads".toDate() // nil
"2014-06-03".toDate() // NSDate

toDateTime()

"asdwads".toDateTime() // nil
"2014-06-03 13:15:01".toDateTime() // NSDate

toDouble()

"asdwads".toDouble() // nil
"2.00".toDouble() // 2.0
"2".toDouble() // 2.0

trimmedLeft()

"        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(startIndex: 0, length: 1) // "h"
"hello world".substring(startIndex: 0, length: 11) // "hello world"

[subscript]

""hello world"[0..<2] == "he"" // "he"
""hello world"[0..<1] == "h"" // "h"
""hello world"[0] == "h""
""hello world"[0..<11] == "hello world"" // "hello world"

Author

Jany Gee, 1321899953@qq.com

GitHub

https://github.com/JanyGee/JGString