Drover's back, baby!

go/src/infra/tools/drover/util.go

Index: go/src/infra/tools/drover/util.go
diff --git a/go/src/infra/tools/drover/util.go b/go/src/infra/tools/drover/util.go
new file mode 100644
index 0000000000000000000000000000000000000000..63b6a1057613fc89e16ecf0b7df378efcb078df2
--- /dev/null
+++ b/go/src/infra/tools/drover/util.go
@@ -0,0 +1,35 @@
+package main
+
+import "fmt"
+import "os"
+import "os/exec"
+import "strings"
+
+func failIf(err error) {
+	if err != nil {
+		fmt.Println("fatal:", err)
+		os.Exit(1)

[M-A Ruel, 2014/10/18 00:47:06]

That's a bit severe and hard to test.

+	}
+}
+
+func SplitLines(data string) []string {
+	return strings.Split(strings.TrimRight(data, "\n"), "\n")
+}
+
+func Shell(dir string) bool {
+	shell := os.Getenv("SHELL")
+	if shell == "" {
+		shell = DefaultShell
+	}
+	shell, err := exec.LookPath(shell)
+	failIf(err)
+	p, err := os.StartProcess(shell, []string{shell}, &os.ProcAttr{
+		Dir:   dir,
+		Files: []*os.File{os.Stdin, os.Stdout, os.Stderr},
+	})
+	failIf(err)
+	s, err := p.Wait()
+	failIf(err)
+
+	return s.Success()
+}