Replace bash release helper scripts with Go progam

cmd/gorepomod/internal/edit/editor.go

@@ -0,0 +1,82 @@
+package edit
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/misc"
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/semver"
+)
+
+// Editor runs `go mod` commands on an instance of Module.
+// If doIt is false, the command is printed, but not run.
+type Editor struct {
+	module misc.LaModule
+	doIt   bool
+}
+
+func New(m misc.LaModule, doIt bool) *Editor {
+	return &Editor{
+		doIt:   doIt,
+		module: m,
+	}
+}
+
+func (e *Editor) run(args ...string) error {
+	c := exec.Command(
+		"go",
+		append([]string{"mod"}, args...)...)
+	c.Dir = string(e.module.ShortName())
+	if e.doIt {
+		out, err := c.CombinedOutput()
+		if err != nil {
+			return fmt.Errorf("%s out=%q", err.Error(), out)
+		}
+	} else {
+		fmt.Printf("in %-60s; %s\n", c.Dir, c.String())
+	}
+	return nil
+}
+
+func upstairs(depth int) string {
+	var b strings.Builder
+	for i := 0; i < depth; i++ {
+		b.WriteString("../")
+	}
+	return b.String()
+}
+
+func (e *Editor) Tidy() error {
+	return e.run("tidy")
+}
+
+func (e *Editor) Pin(target misc.LaModule, oldV, newV semver.SemVer) error {
+	err := e.run(
+		"edit",
+		"-dropreplace="+target.ImportPath()+"@"+oldV.String(),
+		"-require="+target.ImportPath()+"@"+newV.String(),
+	)
+	if err != nil {
+		return err
+	}
+	return e.run("tidy")
+}
+
+func (e *Editor) UnPin(target misc.LaModule, oldV semver.SemVer) error {
+	var r strings.Builder
+	r.WriteString(target.ImportPath())
+	r.WriteString("@")
+	r.WriteString(oldV.String())
+	r.WriteString("=")
+	r.WriteString(upstairs(e.module.ShortName().Depth()))
+	r.WriteString(string(target.ShortName()))
+	err := e.run(
+		"edit",
+		"-replace="+r.String(),
+	)
+	if err != nil {
+		return err
+	}
+	return e.run("tidy")
+}