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iamjason/String+HTMLToNSAttributedString.swift

Last active March 9, 2017 21:10
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Revisions

  1. iamjason revised this gist Mar 9, 2017. 1 changed file with 5 additions and 2 deletions.
    7 changes: 5 additions & 2 deletions String+HTMLToNSAttributedString.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -2,9 +2,11 @@ import UIKit

    public extension String {

    static let htmlBase = "<html><head><style type='text/css'> body { color: %COLOR%; } h1 { font-family: 'GTWalsheimLight'; font-size: 34px; } h2 { font-family: 'GTWalsheimBold'; font-size: 24px; } h3 { font-family:'GTWalsheimLight'; font-size: 18px; } h4 { font-family:'GTWalsheimBold'; font-size: 14px; } h5 { font-family:'GTWalsheimBold'; font-size: 12px; } p { font-family: 'SourceSansPro-Regular'; font-size: 16px; } p.strong { font-family: 'SourceSansPro-Semibold'; font-size: 16px; } </style></head><body>%BODY%</body></html>"
    static let htmlBase = "<html><head><style type='text/css'> body { color: %COLOR%; } %STYLE% </style></head><body>%BODY%</body></html>"

    public func HTMLtoAttributedText(_ color:UIColor = UIColor.black) -> NSAttributedString? {
    static let cssBase = " h1 { font-family: 'GTWalsheimLight'; font-size: 34px; } h2 { font-family: 'GTWalsheimBold'; font-size: 24px; } h3 { font-family:'GTWalsheimLight'; font-size: 18px; } h4 { font-family:'GTWalsheimBold'; font-size: 14px; } h5 { font-family:'GTWalsheimBold'; font-size: 12px; } p { font-family: 'SourceSansPro-Regular'; font-size: 16px; } p.strong { font-family: 'SourceSansPro-Semibold'; font-size: 16px; }"

    public func HTMLtoAttributedText(_ color:UIColor = UIColor.black, css:String = String.cssBase) -> NSAttributedString? {

    // maybe break this out into a string extension, but
    // for now... lets just leave it here
    @@ -21,6 +23,7 @@ public extension String {
    let combined = (String.htmlBase as NSString)
    .replacingOccurrences(of: "%BODY%", with: self)
    .replacingOccurrences(of: "%COLOR%", with: hexString(color) )
    .replacingOccurrences(of: "%STYLE%", with: css)

    if let data = combined.data(using: .utf8) {
    do {
  2. iamjason created this gist Mar 9, 2017.
    37 changes: 37 additions & 0 deletions String+HTMLToNSAttributedString.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,37 @@
    import UIKit

    public extension String {

    static let htmlBase = "<html><head><style type='text/css'> body { color: %COLOR%; } h1 { font-family: 'GTWalsheimLight'; font-size: 34px; } h2 { font-family: 'GTWalsheimBold'; font-size: 24px; } h3 { font-family:'GTWalsheimLight'; font-size: 18px; } h4 { font-family:'GTWalsheimBold'; font-size: 14px; } h5 { font-family:'GTWalsheimBold'; font-size: 12px; } p { font-family: 'SourceSansPro-Regular'; font-size: 16px; } p.strong { font-family: 'SourceSansPro-Semibold'; font-size: 16px; } </style></head><body>%BODY%</body></html>"

    public func HTMLtoAttributedText(_ color:UIColor = UIColor.black) -> NSAttributedString? {

    // maybe break this out into a string extension, but
    // for now... lets just leave it here
    func hexString(_ c:UIColor) -> String {
    var r:CGFloat = 0
    var g:CGFloat = 0
    var b:CGFloat = 0
    var a:CGFloat = 0
    c.getRed(&r, green: &g, blue: &b, alpha: &a)
    let rgb:Int = (Int)(r*255)<<16 | (Int)(g*255)<<8 | (Int)(b*255)<<0
    return String(format:"#%06x", rgb)
    }

    let combined = (String.htmlBase as NSString)
    .replacingOccurrences(of: "%BODY%", with: self)
    .replacingOccurrences(of: "%COLOR%", with: hexString(color) )

    if let data = combined.data(using: .utf8) {
    do {
    return try NSAttributedString(data: data, options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType], documentAttributes: nil)
    }
    catch {
    print("error creating attributed string")
    }
    }

    return nil

    }
    }