Replace bash release helper scripts with Go progam

cmd/gorepomod/internal/misc/interfaces.go

@@ -0,0 +1,126 @@
+package misc
+
+import (
+	"fmt"
+
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/semver"
+)
+
+// ModFunc is a function accepting a module, and returning an error.
+type ModFunc func(LaModule) error
+
+type LaRepository interface {
+	// RepoPath is the import of the of repository,
+	// e.g. github.com/kubernetes-sigs/kustomize
+	// The directory {srcRoot}/{importPath} should contain a
+	// dotGit directory.
+	// This directory might be a Go module, or contain directories
+	// that are Go modules, or both.
+	RepoPath() string
+
+	// AbsPath is the full local filesystem path.
+	AbsPath() string
+
+	// FindModule returns a module or nil.
+	FindModule(ModuleShortName) LaModule
+}
+
+type LaModule interface {
+	// ShortName is the module's name without the repo.
+	ShortName() ModuleShortName
+
+	// ImportPath is the relative path below the Go src root,
+	// which is the same path as would be used to
+	// import the module.
+	ImportPath() string
+
+	// AbsPath is the absolute path to the module's
+	// go.mod file on the local file system.
+	AbsPath() string
+
+	// Latest version tagged locally.
+	VersionLocal() semver.SemVer
+
+	// Latest version tagged remotely.
+	VersionRemote() semver.SemVer
+
+	// Does this module depend on the argument, and
+	// if so at what version?
+	DependsOn(LaModule) (bool, semver.SemVer)
+
+	// GetReplacements returns a list of replacements.
+	GetReplacements() []string
+}
+
+// VersionMap holds the versions associated with modules.
+type VersionMap map[ModuleShortName]semver.Versions
+
+func (m VersionMap) Report() {
+	for n, versions := range m {
+		fmt.Println(n)
+		for _, v := range versions {
+			fmt.Print("  ")
+			fmt.Println(v)
+		}
+	}
+}
+
+func (m VersionMap) Latest(
+	n ModuleShortName) semver.SemVer {
+	versions := m[n]
+	if versions == nil {
+		return semver.Zero()
+	}
+	return versions[0]
+}
+
+type LesModules []LaModule
+
+func (s LesModules) LenLongestName() (ans int) {
+	for _, m := range s {
+		l := len(m.ShortName())
+		if l > ans {
+			ans = l
+		}
+	}
+	return
+}
+
+func (s LesModules) Apply(f ModFunc) error {
+	for _, m := range s {
+		err := f(m)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (s LesModules) Find(target ModuleShortName) LaModule {
+	for _, m := range s {
+		if m.ShortName() == target {
+			return m
+		}
+	}
+	return nil
+}
+
+func (s LesModules) GetAllThatDependOn(
+	target LaModule) (result TaggedModules) {
+	for _, m := range s {
+		if yes, v := m.DependsOn(target); yes {
+			result = append(result, TaggedModule{M: m, V: v})
+		}
+	}
+	return
+}
+
+func (s LesModules) InternalDeps(
+	target LaModule) (result TaggedModules) {
+	for _, m := range s {
+		if yes, v := target.DependsOn(m); yes {
+			result = append(result, TaggedModule{M: m, V: v})
+		}
+	}
+	return
+}

cmd/gorepomod/internal/misc/moduleshortname.go

@@ -0,0 +1,23 @@
+package misc
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+// ModuleShortName is the in-repo path to the directory holding the module
+// (holding the go.mod file).  It's the unique in-repo name of the module.
+// It's the name used to tag the repo at a particular module version.
+// E.g. "" (empty), "kyaml", "cmd/config", "plugin/example/whatever".
+type ModuleShortName string
+
+// Never used in a tag.
+const ModuleAtTop = ModuleShortName("{top}")
+const ModuleUnknown = ModuleShortName("{unknown}")
+
+func (m ModuleShortName) Depth() int {
+	if m == ModuleAtTop || m == ModuleUnknown {
+		return 0
+	}
+	return strings.Count(string(m), string(filepath.Separator)) + 1
+}

cmd/gorepomod/internal/misc/moduleshortname_test.go

@@ -0,0 +1,36 @@
+package misc_test
+
+import (
+	"testing"
+
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/misc"
+)
+
+func TestDepth(t *testing.T) {
+	var testCases = map[string]struct {
+		path          string
+		expectedDepth int
+	}{
+		"zero": {
+			path:          "{top}",
+			expectedDepth: 0,
+		},
+		"one": {
+			path:          "one",
+			expectedDepth: 1,
+		},
+		"three": {
+			path:          "one/two/three",
+			expectedDepth: 3,
+		},
+	}
+	for n, tc := range testCases {
+		m := misc.ModuleShortName(tc.path)
+		d := m.Depth()
+		if d != tc.expectedDepth {
+			t.Fatalf(
+				"%s: %s, expected %d, got %d",
+				n, tc.path, tc.expectedDepth, d)
+		}
+	}
+}

cmd/gorepomod/internal/misc/taggedmodule.go

@@ -0,0 +1,42 @@
+package misc
+
+import (
+	"fmt"
+	"strings"
+
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/semver"
+)
+
+// TaggedModule is a module known to be tagged with the given version.
+type TaggedModule struct {
+	M LaModule
+	V semver.SemVer
+}
+
+func (p TaggedModule) String() string {
+	if p.V.IsZero() {
+		return string(p.M.ShortName())
+	}
+	return string(p.M.ShortName()) + "/" + p.V.String()
+}
+
+type TaggedModules []TaggedModule
+
+func (s TaggedModules) String() string {
+	// format := "%-"+strconv.Itoa(s.LenLongestString()+2)+"s"
+	var b strings.Builder
+	for i := range s {
+		b.WriteString(fmt.Sprintf("%-15s", s[i]))
+	}
+	return b.String()
+}
+
+func (s TaggedModules) LenLongestString() (ans int) {
+	for _, m := range s {
+		l := len(m.String())
+		if l > ans {
+			ans = l
+		}
+	}
+	return
+}

cmd/gorepomod/internal/misc/trackedrepo.go

@@ -0,0 +1,4 @@
+package misc
+
+// TrackedRepo identifies a git remote repository.
+type TrackedRepo string