execext package: support context command

execext/exec.go

@@ -1,6 +1,7 @@
 package execext
 
 import (
+	"context"
 	"os/exec"
 )
 
@@ -17,6 +18,6 @@ func init() {
 	ShExists = err == nil
 }
 
-func newShCommand(c string) *exec.Cmd {
-	return exec.Command(ShPath, "-c", c)
+func newShCommand(ctx context.Context, c string) *exec.Cmd {
+	return exec.CommandContext(ctx, ShPath, "-c", c)
 }

execext/exec_other.go

@@ -3,11 +3,12 @@
 package execext
 
 import (
+	"context"
 	"os/exec"
 )
 
 // NewCommand returns a new command that runs on "sh" is available or on "cmd"
 // otherwise on Windows
-func NewCommand(c string) *exec.Cmd {
-	return newShCommand(c)
+func NewCommand(ctx context.Context, c string) *exec.Cmd {
+	return newShCommand(ctx, c)
 }

execext/exec_win.go

@@ -3,18 +3,19 @@
 package execext
 
 import (
+	"context"
 	"os/exec"
 )
 
 // NewCommand returns a new command that runs on "sh" is available or on "cmd"
 // otherwise on Windows
-func NewCommand(c string) *exec.Cmd {
+func NewCommand(ctx context.Context, c string) *exec.Cmd {
 	if ShExists {
-		return newShCommand(c)
+		return newShCommand(ctx, c)
 	}
-	return newCmdCommand(c)
+	return newCmdCommand(ctx, c)
 }
 
-func newCmdCommand(c string) *exec.Cmd {
-	return exec.Command("cmd", "/C", c)
+func newCmdCommand(ctx context.Context, c string) *exec.Cmd {
+	return exec.CommandContext(ctx, "cmd", "/C", c)
 }