Detect reserved OS names

v2/app/BlockCompressor.go

@@ -155,13 +155,21 @@ func NewBlockCompressor(argsMap map[string]any) (*BlockCompressor, error) {
 	this.inputName = argsMap["inputName"].(string)
 	delete(argsMap, "inputName")
 
+	if internal.IsReservedName(this.inputName) {
+		return nil, fmt.Errorf("'%s' is a reserved name", this.inputName)
+	}
+
 	if len(this.inputName) == 0 {
 		this.inputName = _COMP_STDIN
 	}
 
 	this.outputName = argsMap["outputName"].(string)
 	delete(argsMap, "outputName")
 
+	if internal.IsReservedName(this.outputName) {
+		return nil, fmt.Errorf("'%s' is a reserved name", this.outputName)
+	}
+
 	if len(this.outputName) == 0 && this.inputName == _COMP_STDIN {
 		this.outputName = _COMP_STDOUT
 	}

v2/app/BlockDecompressor.go

@@ -99,13 +99,21 @@ func NewBlockDecompressor(argsMap map[string]any) (*BlockDecompressor, error) {
 	this.inputName = argsMap["inputName"].(string)
 	delete(argsMap, "inputName")
 
+	if internal.IsReservedName(this.inputName) {
+		return nil, fmt.Errorf("'%s' is a reserved name", this.inputName)
+	}
+
 	if len(this.inputName) == 0 {
 		this.inputName = _DECOMP_STDIN
 	}
 
 	this.outputName = argsMap["outputName"].(string)
 	delete(argsMap, "outputName")
 
+	if internal.IsReservedName(this.outputName) {
+		return nil, fmt.Errorf("'%s' is a reserved name", this.outputName)
+	}
+
 	if len(this.outputName) == 0 && this.inputName == _DECOMP_STDIN {
 		this.outputName = _DECOMP_STDOUT
 	}

v2/internal/File.go

@@ -19,6 +19,7 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 )
 
@@ -173,3 +174,28 @@ func CreateFileList(target string, fileList []FileData, isRecursive, ignoreLinks
 
 	return fileList, err
 }
+
+func IsReservedName(fileName string) bool {
+	if runtime.GOOS != "windows" {
+		return false
+	}
+
+	// Sorted list
+	var reserved = []string{"AUX", "COM0", "COM1", "COM2", "COM3", "COM4", "COM5", "COM6",
+		"COM7", "COM8", "COM9", "COM¹", "COM²", "COM³", "CON", "LPT0", "LPT1", "LPT2",
+		"LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9", "NUL", "PRN"}
+
+	for _, r := range reserved {
+		res := strings.Compare(fileName, r)
+
+		if res == 0 {
+			return true
+		}
+
+		if res < 0 {
+			break
+		}
+	}
+
+	return false
+}