Improve logging during element scanning

Sources/Generator/Files/FileSystem.swift

@@ -18,6 +18,8 @@ final class FileSystem {
         input.appendingPathComponent(FileSystem.tempFileName)
     }
 
+    let generatorInfoFolder: URL
+
     /**
      All files which should be copied to the output folder
      */
@@ -70,7 +72,7 @@ final class FileSystem {
         self.input = input
         self.output = output
         self.images = .init(input: input, output: output)
-
+        self.generatorInfoFolder = input.appendingPathComponent("run")
     }
 
     func urlInOutputFolder(_ path: String) -> URL {
@@ -100,20 +102,6 @@ final class FileSystem {
         }
     }
 
-    func dataOfOptionalFile(atPath path: String, source: String) -> Data? {
-        let url = input.appendingPathComponent(path)
-        guard exists(url) else {
-            return nil
-        }
-
-        do {
-            return try Data(contentsOf: url)
-        } catch {
-            log.failedToOpen(path, requiredBy: source, error: error)
-            return nil
-        }
-    }
-
     func contentOfOptionalFile(atPath path: String, source: String, createEmptyFileIfMissing: Bool = false) -> String? {
         let url = input.appendingPathComponent(path)
         guard exists(url) else {

Sources/Generator/Files/ValidationLog.swift

@@ -46,119 +46,7 @@ final class ValidationLog {
         add(info: .init(reason: reason, source: source, error: error))
     }
 
-    @discardableResult
-    func unused<T, R>(_ value: Optional<T>, _ name: String, source: String) -> Optional<R> {
-        if value != nil {
-            add(info: "Unused property '\(name)'", source: source)
-        }
-        return nil
-    }
-
-    func unknown(property: String, source: String) {
-        add(info: "Unknown property '\(property)'", source: source)
-    }
-
-    func required<T>(_ value: Optional<T>, name: String, source: String) -> Optional<T> {
-        guard let value = value else {
-            add(error: "Missing property '\(name)'", source: source)
-            return nil
-        }
-        return value
-    }
-
-    func unexpected<T>(_ value: Optional<T>, name: String, source: String) -> Optional<T> {
-        if let value = value {
-            add(error: "Unexpected property '\(name)' = '\(value)'", source: source)
-            return nil
-        }
-        return nil
-    }
-
-    func missing(_ file: String, requiredBy source: String) {
-        print("[ERROR] Missing file '\(file)' required by \(source)")
-    }
-
     func failedToOpen(_ file: String, requiredBy source: String, error: Error?) {
         print("[ERROR] Failed to open file '\(file)' required by \(source): \(error?.localizedDescription ?? "No error provided")")
     }
-
-    func state(_ raw: String?, source: String) -> PageState {
-        guard let raw = raw else {
-            return .standard
-        }
-        guard let state = PageState(rawValue: raw) else {
-            add(warning: "Invalid 'state' '\(raw)', using 'standard'", source: source)
-            return .standard
-        }
-        return state
-    }
-
-    func headerType(_ raw: String?, source: String) -> HeaderType {
-        guard let raw = raw else {
-            return .left
-        }
-        guard let type = HeaderType(rawValue: raw) else {
-            add(warning: "Invalid 'headerType' '\(raw)', using 'left'", source: source)
-            return .left
-        }
-        return type
-    }
-
-    func thumbnailStyle(_ raw: String?, source: String) -> ThumbnailStyle {
-        guard let raw = raw else {
-            return .large
-        }
-        guard let style = ThumbnailStyle(rawValue: raw) else {
-            add(warning: "Invalid 'thumbnailStyle' '\(raw)', using 'large'", source: source)
-            return .large
-        }
-        return style
-    }
-
-    func linkPreviewThumbnail(customFile: String?, for language: String, in folder: URL, source: String) -> String? {
-        guard let customFile = customFile else {
-            return nil
-        }
-        let customFileUrl: URL
-        if customFile.starts(with: "/") {
-            customFileUrl = URL(fileURLWithPath: customFile)
-        } else {
-            customFileUrl = folder.appendingPathComponent(customFile)
-        }
-        guard customFileUrl.exists else {
-            missing(customFile, requiredBy: "property 'linkPreviewImage' in metadata of \(source)")
-            return nil
-        }
-        return customFile
-    }
-
-    func moreLinkText(_ elementText: String?, parent parentText: String?, source: String) -> String {
-        if let elementText = elementText {
-            return elementText
-        }
-        let standard = Element.LocalizedMetadata.moreLinkDefaultText
-        guard let parentText = parentText, parentText != standard else {
-            add(error: "Missing property 'moreLinkText'", source: source)
-            return standard
-        }
-
-        return parentText
-    }
-
-    func date(from string: String?, property: String, source: String) -> Date? {
-        guard let string = string else {
-            return nil
-        }
-        guard let date = ValidationLog.metadataDate.date(from: string) else {
-            add(warning: "Invalid date string '\(string)' for property '\(property)'", source: source)
-            return nil
-        }
-        return date
-    }
-
-    private static let metadataDate: DateFormatter = {
-        let df = DateFormatter()
-        df.dateFormat = "dd.MM.yy"
-        return df
-    }()
 }