From b2dd71d96f74a48169e621670e35e4736ddafb8d Mon Sep 17 00:00:00 2001
From: Darby Sauter <darbysauter@gmail.com>
Date: Wed, 16 Jun 2021 15:13:42 -0600
Subject: [PATCH] Added an example of defaults as styling without all fields is
 still valid and is parsed by Google Maps. The example in this case is
 LineStyle which would not parse without ID, width, and color. I filled in the
 defaults with the values from
 https://developers.google.com/kml/documentation/kmlreference#linestyle

For the ID field I fill this in with the empty string and then when the
styles are looked up if the ID is null that is changed to an empty
string.
---
 KMLParser/Classes/KMLParser.swift | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/KMLParser/Classes/KMLParser.swift b/KMLParser/Classes/KMLParser.swift
index 0810e11..d671a47 100644
--- a/KMLParser/Classes/KMLParser.swift
+++ b/KMLParser/Classes/KMLParser.swift
@@ -87,7 +87,6 @@ open class KMLParser: NSObject, XMLParserDelegate {
         _ = features.compactMap { [weak self] feature -> [MKAnnotation]? in
             
             ///guard let `self` = self else { return annotations
-            
                 let styles = self?.styles(with: feature.styleId)
             
                 let annotations = feature.annotation(styles: styles)
@@ -266,14 +265,14 @@ open class KMLParser: NSObject, XMLParserDelegate {
                 kmlObjectLookup.removeValue(forKey: .width)
                 kmlObjectLookup.removeValue(forKey: .color)
             }
-            guard
-                let width = kmlObjectLookup[.width] as? KMLFloatValue,
-                let color = kmlObjectLookup[.color] as? KMLColorValue,
-                let id = currentStyleId
-                 else {
-                    return
-                }
-    
+            let width: KMLFloatValue = kmlObjectLookup[.width] as? KMLFloatValue ?? KMLFloatValue(value: 1.0)
+            let color: KMLColorValue = kmlObjectLookup[.color] as? KMLColorValue ?? KMLColorValue(value: UIColor.init(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0))
+            if currentStyleId == nil {
+                let styleID = ""
+                currentStyleId = styleID
+                styles[styleID] = []
+            }
+            let id: String = currentStyleId ?? ""
             styles[id]?.append(KMLStyle.line(color: color.value, width: width.value))
         case .polyStyle:
             defer {
@@ -405,7 +404,7 @@ open class KMLParser: NSObject, XMLParserDelegate {
         return coordinates
     }
     
-    /// 
+    ///
     private static func findParentGeometryElement(in path: KMLElementPath) -> KMLElement? {
         let reversedPath = path.reversed()
         for i in reversedPath.indices {
@@ -419,7 +418,7 @@ open class KMLParser: NSObject, XMLParserDelegate {
     ///
     private func styles(with styleId: String?) -> [KMLStyle]? {
         
-        guard let styleId = styleId else { return nil }
+        let styleId = styleId ?? ""
         
         let style = styleMaps[styleId]?["normal"] ?? styleId