add kotlin

Author: danielborowski

language/kotlin/kotlin.go

@@ -0,0 +1,29 @@
+package kotlin
+
+import (
+	"github.com/danielborowski/cb-code-runner/cmd"
+	"path/filepath"
+	"strings"
+)
+
+func Run(files []string, stdin string) (string, string, error) {
+	workDir := filepath.Dir(files[0])
+	fname := filepath.Base(files[0])
+
+	stdout, stderr, err := cmd.Run(workDir, "kotlinc", fname)
+	if err != nil {
+		return stdout, stderr, err
+	}
+
+	return cmd.RunStdin(workDir, stdin, "kotlin", className(fname))
+}
+
+func className(fname string) string {
+	if len(fname) < 5 {
+		return fname
+	}
+
+	ext := filepath.Ext(fname)
+	name := fname[0 : len(fname)-len(ext)]
+	return strings.ToUpper(string(name[0])) + name[1:] + "Kt"
+}

language/language.go

@@ -11,6 +11,7 @@ import (
 	"github.com/danielborowski/cb-code-runner/language/cpp"
 	"github.com/danielborowski/cb-code-runner/language/csharp"
 	"github.com/danielborowski/cb-code-runner/language/c"
+	"github.com/danielborowski/cb-code-runner/language/kotlin"
 )
 
 type runFn func([]string, string) (string, string, error)
@@ -26,6 +27,7 @@ var languages = map[string]runFn{
 	"cpp":          cpp.Run,
 	"csharp":       csharp.Run,
 	"c":            c.Run,
+	"kotlin":       kotlin.Run,
 }
 
 func IsSupported(lang string) bool {