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Sources/ResgenSwift/Images/Generator/ImageExtensionGenerator.swift

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+//
+//  ImageExtensionGenerator.swift
+//  
+//
+//  Created by Thibaut Schmitt on 14/02/2022.
+//
+
+import ToolCore
+import Foundation
+
+class ImageExtensionGenerator {
+    
+    // MARK: - pragm
+    
+    static func generateExtensionFile(images: [ParsedImage],
+                                      staticVar: Bool,
+                                      inputFilename: String,
+                                      extensionName: String,
+                                      extensionFilePath: String) {
+        // Create extension conten1t
+        let extensionContent = Self.getExtensionContent(images: images,
+                                                        staticVar: staticVar,
+                                                        extensionName: extensionName,
+                                                        inputFilename: inputFilename)
+        
+        // Write content
+        let extensionFilePathURL = URL(fileURLWithPath: extensionFilePath)
+        do {
+            try extensionContent.write(to: extensionFilePathURL, atomically: false, encoding: .utf8)
+        } catch (let error) {
+            let error = ImagesError.writeFile(extensionFilePath, error.localizedDescription)
+            print(error.localizedDescription)
+            Images.exit(withError: error)
+        }
+    }
+    
+    // MARK: - Extension content
+    
+    static func getExtensionContent(images: [ParsedImage], staticVar: Bool, extensionName: String, inputFilename: String) -> String {
+        [
+            Self.getHeader(inputFilename: inputFilename, extensionClassname: extensionName),
+            Self.getProperties(images: images, staticVar: staticVar),
+            Self.getFooter()
+        ]
+            .joined(separator: "\n")
+    }
+    
+    // MARK: - Extension part
+    
+    private static func getHeader(inputFilename: String, extensionClassname: String) -> String {
+        """
+        // Generated by ResgenSwift.\(Images.toolName) \(ResgenSwiftVersion)
+        // Images from \(inputFilename)
+        
+        import UIKit
+        
+        extension \(extensionClassname) {
+        """
+    }
+    
+    private static func getProperties(images: [ParsedImage], staticVar: Bool) -> String {
+        if staticVar {
+            return images
+                .map { "\n\($0.getStaticImageProperty())" }
+                .joined(separator: "\n")
+        }
+        return images
+            .map { "\n\($0.getImageProperty())" }
+            .joined(separator: "\n")
+    }
+    
+    private static func getFooter() -> String {
+        """
+        }
+        """
+    }
+}

Sources/ResgenSwift/Images/Generator/XcassetsGenerator.swift

@@ -0,0 +1,171 @@
+//
+//  XcassetsGenerator.swift
+//  
+//
+//  Created by Thibaut Schmitt on 24/01/2022.
+//
+
+import Foundation
+import ToolCore
+
+class XcassetsGenerator {
+    
+    static let outputImageExtension = "png"
+    
+    let forceGeneration: Bool
+    
+    // MARK: - Init
+    
+    init(forceGeneration: Bool) {
+        self.forceGeneration = forceGeneration
+    }
+    
+    // MARK: - Assets generation
+    
+    func generateXcassets(inputPath: String, imagesToGenerate: [ParsedImage], xcassetsPath: String) {
+        let fileManager = FileManager()
+        let svgConverter = Images.getSvgConverterPath()
+        let allSubFiles = fileManager.getAllRegularFileIn(directory: inputPath)
+        
+        var generatedAssetsPaths = [String]()
+        
+        // Generate new assets
+        imagesToGenerate.forEach { parsedImage in
+            // Get image path
+            let imageData: (path: String, ext: String) = {
+                for subfile in allSubFiles {
+                    if subfile.hasSuffix("/" + parsedImage.name + ".svg") {
+                        return (subfile, "svg")
+                    }
+                    if subfile.hasSuffix("/" + parsedImage.name + ".png") {
+                        return (subfile, "png")
+                    }
+                    if subfile.hasSuffix("/" + parsedImage.name + ".jpg") {
+                        return (subfile, "jpg")
+                    }
+                    if subfile.hasSuffix("/" + parsedImage.name + ".jepg") {
+                        return (subfile, "jepg")
+                    }
+                }
+                let error = ImagesError.unknownImageExtension(parsedImage.name)
+                print(error.localizedDescription)
+                Images.exit(withError: error)
+            }()
+            
+            // Create imageset folder name
+            let imagesetName = "\(parsedImage.name).imageset"
+            let imagesetPath = "\(xcassetsPath)/\(imagesetName)"
+            
+            // Store managed images path
+            generatedAssetsPaths.append(imagesetName)
+            
+            // Generate output images path
+            let output1x = "\(imagesetPath)/\(parsedImage.name).\(XcassetsGenerator.outputImageExtension)"
+            let output2x = "\(imagesetPath)/\(parsedImage.name)@2x.\(XcassetsGenerator.outputImageExtension)"
+            let output3x = "\(imagesetPath)/\(parsedImage.name)@3x.\(XcassetsGenerator.outputImageExtension)"
+            
+            // Check if we need to convert image
+            guard self.shouldGenerate(inputImagePath: imageData.path, xcassetImagePath: output1x) else {
+                //print("\(parsedImage.name) -> Not regenerating")
+                return
+            }
+            
+            // Create imageset folder
+            if fileManager.fileExists(atPath: imagesetPath) == false {
+                do {
+                    try fileManager.createDirectory(atPath: imagesetPath,
+                                                    withIntermediateDirectories: true)
+                } catch {
+                    let error = ImagesError.createAssetFolder(imagesetPath)
+                    print(error.localizedDescription)
+                    Images.exit(withError: error)
+                }
+            }
+            
+            // Convert image
+            let convertArguments = parsedImage.convertArguments
+            if imageData.ext == "svg" {
+                // /usr/local/bin/rsvg-convert path/to/image.png -w 200 -h 300 -o path/to/output.png
+                // /usr/local/bin/rsvg-convert path/to/image.png -w 200 -o path/to/output.png
+                // /usr/local/bin/rsvg-convert path/to/image.png -h 300 -o path/to/output.png
+                var command1x = ["\(svgConverter)", "\(imageData.path)"]
+                var command2x = ["\(svgConverter)", "\(imageData.path)"]
+                var command3x = ["\(svgConverter)", "\(imageData.path)"]
+                
+                self.addConvertArgument(command: &command1x, convertArgument: convertArguments.x1)
+                self.addConvertArgument(command: &command2x, convertArgument: convertArguments.x2)
+                self.addConvertArgument(command: &command3x, convertArgument: convertArguments.x3)
+                
+                command1x.append(contentsOf: ["-o", output1x])
+                command2x.append(contentsOf: ["-o", output2x])
+                command3x.append(contentsOf: ["-o", output3x])
+                
+                Shell.shell(command1x)
+                Shell.shell(command2x)
+                Shell.shell(command3x)
+            } else {
+                // convert path/to/image.png -resize 200x300 path/to/output.png
+                // convert path/to/image.png -resize 200x path/to/output.png
+                // convert path/to/image.png -resize x300 path/to/output.png
+                Shell.shell(["convert", "\(imageData.path)",
+                             "-resize", "\(convertArguments.x1.width ?? "")x\(convertArguments.x1.height ?? "")",
+                             output1x])
+                Shell.shell(["convert", "\(imageData.path)",
+                             "-resize", "\(convertArguments.x2.width ?? "")x\(convertArguments.x2.height ?? "")",
+                             output2x])
+                Shell.shell(["convert", "\(imageData.path)",
+                             "-resize", "\(convertArguments.x3.width ?? "")x\(convertArguments.x3.height ?? "")",
+                             output3x])
+            }
+            
+            // Write Content.json
+            let imagesetContentJson = parsedImage.contentJson
+            let contentJsonFilePath = "\(imagesetPath)/Contents.json"
+            
+            let contentJsonFilePathURL = URL(fileURLWithPath: contentJsonFilePath)
+            try! imagesetContentJson.write(to: contentJsonFilePathURL, atomically: false, encoding: .utf8)
+            
+            print("\(parsedImage.name) -> Generated")
+        }
+        
+        // Success info
+        let generatedAssetsCount = generatedAssetsPaths.count
+        print("Images generated: \(generatedAssetsCount)")
+        
+        // Delete old assets
+        let allImagesetName = Set(fileManager.getAllImageSetFolderIn(directory: xcassetsPath))        
+        let imagesetToRemove = allImagesetName.subtracting(Set(generatedAssetsPaths))
+        
+        imagesetToRemove.forEach {
+            print("Will remove: \($0)")
+        }
+        
+        imagesetToRemove.forEach { itemToRemove in
+            try! fileManager.removeItem(atPath: "\(xcassetsPath)/\(itemToRemove)")
+        }
+        print("Removed \(imagesetToRemove.count) images")
+    }
+    
+    // MARK: - Helpers: SVG command
+    
+    private func addConvertArgument(command: inout [String], convertArgument: ConvertArgument) {
+        if let width = convertArgument.width, width.isEmpty == false {
+            command.append("-w")
+            command.append("\(width)")
+        }
+        if let height = convertArgument.height, height.isEmpty == false {
+            command.append("-h")
+            command.append("\(height)")
+        }
+    }
+    
+    // MARK: - Helpers: bypass generation
+    
+    private func shouldGenerate(inputImagePath: String, xcassetImagePath: String) -> Bool {
+        if forceGeneration {
+            return true
+        }
+        
+        return GeneratorChecker.isFile(inputImagePath, moreRecenThan: xcassetImagePath)
+    }
+}