Bugs fixes, Lint fixes, Refactoring

Sources/ColorTool/Parser/ColorFileParser.swift

@@ -0,0 +1,49 @@
+//
+//  File.swift
+//  
+//
+//  Created by Thibaut Schmitt on 29/08/2022.
+//
+
+import Foundation
+
+class ColorFileParser {
+    static func parse(_ inputFile: String, colorStyle: ColorStyle) -> [ParsedColor] {
+        // Get content of input file
+        let inputFileContent = try! String(contentsOfFile: inputFile, encoding: .utf8)
+        let colorsByLines = inputFileContent.components(separatedBy: CharacterSet.newlines)
+        
+        // Iterate on each line of input file
+        return colorsByLines.enumerated().compactMap { lineNumber, colorLine in
+            // Required format:
+            // colorName="#RGB/#ARGB", colorName "#RGB/#ARGB", colorName "#RGB/#ARGB" "#RGB/#ARGB"
+            let colorLineCleanedUp = colorLine
+                .removeTrailingWhitespace()
+                .replacingOccurrences(of: "=", with: "") // Keep compat with current file format
+            
+            guard colorLineCleanedUp.hasPrefix("#") == false, colorLineCleanedUp.isEmpty == false else {
+                print("[\(ColorTool.toolName)] ⚠️  BadFormat or empty line (line number: \(lineNumber + 1)). Skip this line")
+                return nil
+            }
+            
+            let colorContent = colorLineCleanedUp.split(separator: " ")
+            
+            guard colorContent.count >= 2 else {
+                let error = ColorToolError.badFormat(colorLine)
+                print(error.localizedDescription)
+                ColorTool.exit(withError: error)
+            }
+            
+            switch colorStyle {
+            case .light:
+                return ParsedColor(name: String(colorContent[0]), light: String(colorContent[1]), dark: String(colorContent[1]))
+                
+            case .all:
+                if colorContent.count == 3 {
+                    return ParsedColor(name: String(colorContent[0]), light: String(colorContent[1]), dark: String(colorContent[2]))
+                }
+                return ParsedColor(name: String(colorContent[0]), light: String(colorContent[1]), dark: String(colorContent[1]))
+            }
+        }
+    }
+}