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Reviewed-on: #1

Sources/ResgenSwift/Colors/Parser/ColorFileParser.swift

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+//
+//  ColorFileParser.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 parseLines(lines: colorsByLines, colorStyle: colorStyle)
+    }
+    
+    static func parseLines(lines: [String], colorStyle: ColorStyle) -> [ParsedColor] {
+        lines
+            .enumerated()
+            .compactMap { lineNumber, colorLine in
+                // Required format:
+                // colorName = "#RGB/#ARGB", colorName "#RGB/#ARGB", colorName "#RGB/#ARGB" "#RGB/#ARGB"
+                let colorLineCleanedUp = colorLine
+                    .removeLeadingWhitespace()
+                    .removeTrailingWhitespace()
+                    .replacingOccurrences(of: "=", with: "") // Keep compat with current file format
+                
+                guard colorLineCleanedUp.hasPrefix("#") == false, colorLineCleanedUp.isEmpty == false else {
+                    // debugPrint("[\(Colors.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 = ColorsToolError.badFormat(colorLine)
+                    print(error.localizedDescription)
+                    Colors.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]))
+                }
+            }
+    }
+}