Added --ignore-filename-regex

Sources/SwiftDocCoverage/Coverage.swift

@@ -28,14 +28,17 @@ extension String : LocalizedError {
   public var errorDescription: String? { self }
 }
 
-fileprivate func findFiles(path: String, ext: String, skipsHiddenFiles: Bool) throws -> [URL]  {
+fileprivate func findFiles(path: String, ext: String, skipsHiddenFiles: Bool, ignoreFilenameRegex: String) throws -> [URL]  {
   var isDirectory: ObjCBool = false
   guard FileManager.default.fileExists(atPath: path, isDirectory: &isDirectory) else {
     throw "Path not found."
   }
 
   if isDirectory.boolValue {
     var urls = [URL]()
+
+    let regex: NSRegularExpression? = ignoreFilenameRegex.isEmpty ? nil : try NSRegularExpression(pattern: ignoreFilenameRegex)
+
     let url = URL(fileURLWithPath: path)
     let resourceKeys = Set<URLResourceKey>([.nameKey, .isDirectoryKey])
     let options: FileManager.DirectoryEnumerationOptions = skipsHiddenFiles ? [.skipsHiddenFiles] : []
@@ -49,6 +52,15 @@ fileprivate func findFiles(path: String, ext: String, skipsHiddenFiles: Bool) th
           continue
         }
 
+        // Skip by regex
+        if let regex = regex {
+          let fileName = fileURL.lastPathComponent
+          let range = NSRange(location: 0, length: fileName.utf16.count)
+          if regex.firstMatch(in: fileName, range: range) != nil {
+            continue
+          }
+        }
+
         urls.append(fileURL)
       }
     }
@@ -74,8 +86,10 @@ public struct Coverage {
     return formatter
   }()
 
-  public init(paths: [String], skipsHiddenFiles: Bool = true, minAccessLevel: AccessLevel = .public, output: Output = TerminalOutput()) throws {
-    self.urls = try paths.flatMap { try findFiles(path: $0, ext: ".swift", skipsHiddenFiles: skipsHiddenFiles) }
+  public init(paths: [String], skipsHiddenFiles: Bool = true, ignoreFilenameRegex: String = "", minAccessLevel: AccessLevel = .public, output: Output = TerminalOutput()) throws {
+    self.urls = try paths.flatMap {
+      try findFiles(path: $0, ext: ".swift", skipsHiddenFiles: skipsHiddenFiles, ignoreFilenameRegex: ignoreFilenameRegex)
+    }
     guard urls.count > 0 else {
       throw "Swift files not found."
     }

Sources/swift-doc-coverage/main.swift

@@ -59,6 +59,9 @@ struct SwiftDocCoverage: ParsableCommand {
   @Option(name: .shortAndLong, help: "An option to skip hidden files.")
   var skipsHiddenFiles: Bool = true
 
+  @Option(name: .shortAndLong, help: "Skip source code files with file paths that match the given regular expression.")
+  var ignoreFilenameRegex: String = ""
+
   @Option(name: .shortAndLong, help: "The minimum access level of the symbols considered for coverage statistics: \(AccessLevelArgument.open), \(AccessLevelArgument.public), \(AccessLevelArgument.internal), \(AccessLevelArgument.fileprivate), \(AccessLevelArgument.private).")
   var minimumAccessLevel: AccessLevelArgument = .public
 
@@ -74,7 +77,12 @@ struct SwiftDocCoverage: ParsableCommand {
       out = try FileOutput(path: path)
     }
 
-    let coverage = try Coverage(paths: inputs, skipsHiddenFiles: skipsHiddenFiles, minAccessLevel: minimumAccessLevel.accessLevel, output: out)
+    let coverage = try Coverage(
+      paths: inputs,
+      skipsHiddenFiles: skipsHiddenFiles,
+      ignoreFilenameRegex: ignoreFilenameRegex,
+      minAccessLevel: minimumAccessLevel.accessLevel,
+      output: out)
 
     switch report {
       case .statistics: