Update to tengo v2 (#976)

vendor/github.com/d5/tengo/v2/stdlib/os_exec.go

@@ -0,0 +1,119 @@
+package stdlib
+
+import (
+	"os/exec"
+
+	"github.com/d5/tengo/v2"
+)
+
+func makeOSExecCommand(cmd *exec.Cmd) *tengo.ImmutableMap {
+	return &tengo.ImmutableMap{
+		Value: map[string]tengo.Object{
+			// combined_output() => bytes/error
+			"combined_output": &tengo.UserFunction{
+				Name:  "combined_output",
+				Value: FuncARYE(cmd.CombinedOutput),
+			},
+			// output() => bytes/error
+			"output": &tengo.UserFunction{
+				Name:  "output",
+				Value: FuncARYE(cmd.Output),
+			}, //
+			// run() => error
+			"run": &tengo.UserFunction{
+				Name:  "run",
+				Value: FuncARE(cmd.Run),
+			}, //
+			// start() => error
+			"start": &tengo.UserFunction{
+				Name:  "start",
+				Value: FuncARE(cmd.Start),
+			}, //
+			// wait() => error
+			"wait": &tengo.UserFunction{
+				Name:  "wait",
+				Value: FuncARE(cmd.Wait),
+			}, //
+			// set_path(path string)
+			"set_path": &tengo.UserFunction{
+				Name: "set_path",
+				Value: func(args ...tengo.Object) (tengo.Object, error) {
+					if len(args) != 1 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+					s1, ok := tengo.ToString(args[0])
+					if !ok {
+						return nil, tengo.ErrInvalidArgumentType{
+							Name:     "first",
+							Expected: "string(compatible)",
+							Found:    args[0].TypeName(),
+						}
+					}
+					cmd.Path = s1
+					return tengo.UndefinedValue, nil
+				},
+			},
+			// set_dir(dir string)
+			"set_dir": &tengo.UserFunction{
+				Name: "set_dir",
+				Value: func(args ...tengo.Object) (tengo.Object, error) {
+					if len(args) != 1 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+					s1, ok := tengo.ToString(args[0])
+					if !ok {
+						return nil, tengo.ErrInvalidArgumentType{
+							Name:     "first",
+							Expected: "string(compatible)",
+							Found:    args[0].TypeName(),
+						}
+					}
+					cmd.Dir = s1
+					return tengo.UndefinedValue, nil
+				},
+			},
+			// set_env(env array(string))
+			"set_env": &tengo.UserFunction{
+				Name: "set_env",
+				Value: func(args ...tengo.Object) (tengo.Object, error) {
+					if len(args) != 1 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+
+					var env []string
+					var err error
+					switch arg0 := args[0].(type) {
+					case *tengo.Array:
+						env, err = stringArray(arg0.Value, "first")
+						if err != nil {
+							return nil, err
+						}
+					case *tengo.ImmutableArray:
+						env, err = stringArray(arg0.Value, "first")
+						if err != nil {
+							return nil, err
+						}
+					default:
+						return nil, tengo.ErrInvalidArgumentType{
+							Name:     "first",
+							Expected: "array",
+							Found:    arg0.TypeName(),
+						}
+					}
+					cmd.Env = env
+					return tengo.UndefinedValue, nil
+				},
+			},
+			// process() => imap(process)
+			"process": &tengo.UserFunction{
+				Name: "process",
+				Value: func(args ...tengo.Object) (tengo.Object, error) {
+					if len(args) != 0 {
+						return nil, tengo.ErrWrongNumArguments
+					}
+					return makeOSProcess(cmd.Process), nil
+				},
+			},
+		},
+	}
+}