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@siberianisaev
Last active January 14, 2016 08:21
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Replace HTML table with spaces and new lines
extension UIFont {
func sizeOfString(string: NSString, constrainedToWidth width: Double) -> CGSize {
return string.boundingRectWithSize(CGSize(width: width, height: DBL_MAX), options: NSStringDrawingOptions.UsesLineFragmentOrigin, attributes: [NSFontAttributeName: self], context: nil).size
}
}
extension String {
static private var kPBegin = "<p>"
static private var kPEnd = "</p>"
static private var kBBegin = "<b>"
static private var kBEnd = "</b>"
static private var kBr = "<br>"
static private var kNewLine = "\n"
static private var kSpaceSymbol = " "
static private var kPreBegin = "<pre>"
static private var kPreEnd = "</pre>"
static private var kTableBegin = "<table"
static private var kTableEnd = "</table>"
static func replaceHTMLTablesWithFormattedText(htmlText: String?) -> String? {
if nil == htmlText {
return htmlText
}
let font = UIFont.systemFontOfSize(12)
let compareWidth = 10000.0
var result: NSString = htmlText!
var rangeStart = result.rangeOfString(kTableBegin, options: [.CaseInsensitiveSearch])
while rangeStart.location != NSNotFound {
let rangeEnd = result.rangeOfString(kTableEnd, options: [.CaseInsensitiveSearch])
if rangeEnd.location != NSNotFound {
let rangeTable = NSMakeRange(rangeStart.location, rangeEnd.location+rangeEnd.length - rangeStart.location)
let stringTable = result.substringWithRange(rangeTable)
let html = Ji(htmlString: stringTable)
if let table = html?.rootNode?.firstChild?.firstChild, body = table.firstChild { // html->body->table->tbody->...
var data = [[String]]()
let trs = body.children
if let maxTds = trs.first?.children.count {
for i in 0...maxTds-1 {
var columnData = [String]()
for tr in trs {
let tds = tr.children
if i < tds.count {
let td = tds[i]
if let content = String.stringByStripHTML(td.content) {
columnData.append(content)
}
continue
}
columnData.append("")
}
data.append(columnData)
}
}
var fixedTable = kBr
if data.count > 0 {
for i in 0...data[0].count-1 { // columns
var maxLength: CGFloat = 0
for j in 0...data.count-1 { // rows
let string = data[i][j]
let length = font.sizeOfString(string, constrainedToWidth: compareWidth).width
if length > maxLength {
maxLength = length
}
}
for j in 0...data.count-1 {
let string = data[i][j]
let length = font.sizeOfString(string, constrainedToWidth: compareWidth).width
var spaces = maxLength - length
if spaces > 0 {
spaces /= font.sizeOfString(kSpaceSymbol, constrainedToWidth: compareWidth).width
let count = Int(spaces)
if count > 0 {
data[i][j] = string + String(count: count, repeatedValue: kSpaceSymbol.characters.first!)
}
}
}
}
for i in 0...data.count-1 { // rows
var row = [String]()
for j in 0...data[0].count-1 { // columns
row.append(data[j][i])
}
fixedTable += kPreBegin + row.joinWithSeparator(kSpaceSymbol + kSpaceSymbol) + kPreEnd + kBr
}
}
result = result.stringByReplacingOccurrencesOfString(stringTable, withString: fixedTable)
} else {
return result as String
}
rangeStart = result.rangeOfString(kTableBegin, options: [.CaseInsensitiveSearch])
} else {
return result as String
}
}
return result as String
}
}
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