Bug fixes, aria, cross platform support.

Plugins/BindingPlugin/source.swift

@@ -54,7 +54,6 @@ extension BindingPlugin: BuildToolPlugin {
 #if canImport(XcodeProjectPlugin)
 
     import XcodeProjectPlugin
-import System
 
     // The entry point for Xcode project builds.
     extension BindingPlugin: XcodeBuildToolPlugin {
@@ -149,15 +148,22 @@ struct BindingPlugin {
             let extIndex = fileName.index(fileName.startIndex, offsetBy: fileName.count - (ext.count + 1))
             let withoutExt = String(fileName[fileName.startIndex..<extIndex])
             let targetFileName = "\(withoutExt.uppercaseFirstLetter()).swift"
-            
-            let rootFP = FilePath(rootPath.path)
-            var inputFP = FilePath(eachFile.path)
-            let outputDirFP = FilePath(outputDir.path)
-            
-            let _ = inputFP.removePrefix(rootFP)
-            inputFP.removeLastComponent()
-            //let idk = outputDirFP.pushing(inputFP)
-            let outputFileA = outputDir.appendingPathComponent(inputFP.string)
+
+            let rootPathP = Path(rootPath.path)
+            let fileDirP = Path(eachFile.deletingLastPathComponent().path)
+            let relativeDir: String
+            let baseDir = rootPathP.string.hasSuffix("/") ? rootPathP.string : rootPathP.string + "/"
+            if fileDirP.string == rootPathP.string {
+                relativeDir = ""
+            } else if fileDirP.string.hasPrefix(baseDir) {
+                relativeDir = String(fileDirP.string.dropFirst(baseDir.count))
+            } else {
+                relativeDir = ""
+            }
+
+            let outputFileA = relativeDir.isEmpty
+                ? outputDir
+                : outputDir.appendingPathComponent(relativeDir)
             let outputFile = outputFileA.appendingPathComponent(targetFileName)
             print("Expected path: \(outputFile.path)")