move platform specific code to dedicated platform files

pkg/commands/os.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"os"
 	"os/exec"
-	"runtime"
 	"strings"
 
 	"github.com/davecgh/go-spew/spew"
@@ -74,25 +73,6 @@ func sanitisedCommandOutput(output []byte, err error) (string, error) {
 	return outputString, nil
 }
 
-func getPlatform() *Platform {
-	switch runtime.GOOS {
-	case "windows":
-		return &Platform{
-			os:           "windows",
-			shell:        "cmd",
-			shellArg:     "/c",
-			escapedQuote: "\\\"",
-		}
-	default:
-		return &Platform{
-			os:           runtime.GOOS,
-			shell:        "bash",
-			shellArg:     "-c",
-			escapedQuote: "\"",
-		}
-	}
-}
-
 // GetOpenCommand get open command
 func (c *OSCommand) GetOpenCommand() (string, string, error) {
 	//NextStep open equivalents: xdg-open (linux), cygstart (cygwin), open (OSX)

pkg/commands/os_default_platform.go

@@ -0,0 +1,16 @@
+// +build !windows
+
+package commands
+
+import (
+	"runtime"
+)
+
+func getPlatform() *Platform {
+	return &Platform{
+		os:           runtime.GOOS,
+		shell:        "bash",
+		shellArg:     "-c",
+		escapedQuote: "\"",
+	}
+}

pkg/commands/os_windows.go

@@ -0,0 +1,10 @@
+package commands
+
+func getPlatform() *Platform {
+	return &Platform{
+		os:           "windows",
+		shell:        "cmd",
+		shellArg:     "/c",
+		escapedQuote: "\\\"",
+	}
+}