Refactor in one unique command with subcommand + add a new command to generate ressources from a configuration file

Sources/ResgenSwift/Images/Parser/ImageFileParser.swift

@@ -0,0 +1,47 @@
+//
+//  ImageFileParser.swift
+//  
+//
+//  Created by Thibaut Schmitt on 24/01/2022.
+//
+
+import Foundation
+
+class ImageFileParser {
+    
+    static func parse(_ inputFile: String, platform: PlatormTag) -> [ParsedImage] {
+        let inputFileContent = try! String(contentsOfFile: inputFile, encoding: .utf8)
+        let stringsByLines = inputFileContent.components(separatedBy: .newlines)
+        
+        var imagesToGenerate = [ParsedImage]()
+        
+        // Parse file
+        stringsByLines.forEach {
+            guard $0.removeLeadingTrailingWhitespace().isEmpty == false, $0.first != "#" else {
+                return
+            }
+            
+            let splittedLine = $0.split(separator: " ")
+            
+            let width: Int = {
+                if splittedLine[2] == "?" {
+                    return -1
+                }
+                return Int(splittedLine[2])!
+            }()
+            let height: Int = {
+                if splittedLine[3] == "?" {
+                    return -1
+                }
+                return Int(splittedLine[3])!
+            }()
+            
+            let image = ParsedImage(name: String(splittedLine[1]), tags: String(splittedLine[0]), width: width, height: height)
+            imagesToGenerate.append(image)
+        }
+        
+        return imagesToGenerate.filter {
+            $0.tags.contains(platform.rawValue)
+        }
+    }
+}