LargeValueFormatter.swift

//

//  ChartsDemo-OSX
//
//  Copyright 2015 Daniel Cohen Gindi & Philipp Jahoda
//  Copyright © 2017 thierry Hentic.
//  A port of MPAndroidChart for iOS
//  Licensed under Apache License 2.0
//
//  https://github.com/danielgindi/ios-charts
//  https://en.wikipedia.org/wiki/Metric_prefix

import Foundation
import Charts

open class LargeValueFormatter: NSObject, IValueFormatter, IAxisValueFormatter
{
    fileprivate static let MAX_LENGTH = 5
    
    /// Suffix to be appended after the values.
    ///
    /// **default**: suffix: ["", "k", "m", "b", "t"]
      @objc open var suffix = ["", "k", "L", "Cr", "Ar"]

    
    /// An appendix text to be added at the end of the formatted value.
    @objc open var appendix: String?
    
    public override init()
    {
        
    }
    @objc public init(appendix: String?)
    {
        self.appendix = appendix
    }
    
    fileprivate func format(value: Double) -> String
    {
        var sig = value
        //        var length = 0
        var length = 3
//        let maxLength = suffix.count - 1
        
        
        
        if (sig >= 10000000)  {
            sig = (sig / 10000000) //Cr
            length -= 0
        } else if (sig >= 100000) {
            sig = (sig / 100000) // ' Lac';
            length -= 1
        }
        else if(sig >= 1000){
            sig = (sig/1000) //' K'
            length -= 2
        }
        else{
            length -= 3  // ""
        }
        
        //old condition
        //        while sig >= 1000.0 && length < maxLength
        //        {
        //            sig /= 1000.0
        //            length += 1
        //        }
        
        var r = String(format: "%2.f", sig ) + suffix[length]
        
        if appendix != nil
        {
            r += appendix!
        }
        
        return r
    }
    
    open func stringForValue(
        _ value: Double, axis: AxisBase?) -> String
    {
        return format(value: value)
    }
    
    open func stringForValue(
        _ value: Double,
        entry: ChartDataEntry,
        dataSetIndex: Int,
        viewPortHandler: ViewPortHandler?) -> String
    {
        return format(value: value)
    }
}
//*/