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print_go_mod.go
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/
print_go_mod.go
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// Copyright 2019 The Operator-SDK Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package deps
import (
"bytes"
"fmt"
"html/template"
"io"
"text/tabwriter"
"github.com/operator-framework/operator-sdk/internal/util/projutil"
"github.com/rogpeppe/go-internal/modfile"
)
func ExecGoModTmpl(tmpl string) ([]byte, error) {
projutil.MustInProjectRoot()
repo := projutil.CheckAndGetProjectGoPkg()
t, err := template.New("").Parse(tmpl)
if err != nil {
return nil, fmt.Errorf("failed to parse go mod template: (%v)", err)
}
buf := &bytes.Buffer{}
if err := t.Execute(buf, struct{ Repo string }{Repo: repo}); err != nil {
return nil, fmt.Errorf("failed to execute go mod template: (%v)", err)
}
return buf.Bytes(), nil
}
func PrintGoMod(b []byte) error {
modFile, err := modfile.Parse("go.mod", b, nil)
if err != nil {
return err
}
mods := &GoModFile{modFile}
buf := &bytes.Buffer{}
w := tabwriter.NewWriter(buf, 16, 8, 0, '\t', 0)
if err = mods.writeRequireSection(w); err != nil {
return err
}
if len(mods.Replace) > 0 {
if err = mods.writeReplaceSection(w); err != nil {
return err
}
}
if len(mods.Exclude) > 0 {
if err = mods.writeExcludeSection(w); err != nil {
return err
}
}
if err := w.Flush(); err != nil {
return err
}
fmt.Print(buf.String())
return nil
}
type GoModFile struct {
*modfile.File
}
func (g *GoModFile) writeRequireSection(w io.Writer) error {
_, err := w.Write([]byte("REQUIRE\t\n"))
if err != nil {
return err
}
_, err = w.Write([]byte("Name\tVersion\tIndirect\t\n"))
if err != nil {
return err
}
for _, r := range g.Require {
if err = writeRowRequire(w, r); err != nil {
return err
}
}
return nil
}
func (g *GoModFile) writeReplaceSection(w io.Writer) error {
_, err := w.Write([]byte("\nREPLACE\t\n"))
if err != nil {
return err
}
_, err = w.Write([]byte("Old Name\tOld Version\tNew Name\tNew Version\t\n"))
if err != nil {
return err
}
for _, r := range g.Replace {
if err = writeRowReplace(w, r); err != nil {
return err
}
}
return nil
}
func (g *GoModFile) writeExcludeSection(w io.Writer) error {
_, err := w.Write([]byte("\nEXCLUDE\t\n"))
if err != nil {
return err
}
_, err = w.Write([]byte("Name\tVersion\t\n"))
if err != nil {
return err
}
for _, e := range g.Exclude {
if err = writeRowExclude(w, e); err != nil {
return err
}
}
return nil
}
func writeRowRequire(w io.Writer, r *modfile.Require) error {
row := fmt.Sprintf("%v\t%v\t", r.Mod.Path, r.Mod.Version)
if r.Indirect {
row += "true\t\n"
} else {
row += "\n"
}
_, err := w.Write([]byte(row))
return err
}
func writeRowReplace(w io.Writer, r *modfile.Replace) error {
row := fmt.Sprintf("%v\t%v\t%v\t%v\t\n", r.Old.Path, r.Old.Version, r.New.Path, r.New.Version)
_, err := w.Write([]byte(row))
return err
}
func writeRowExclude(w io.Writer, e *modfile.Exclude) error {
row := fmt.Sprintf("%v\t%v\t\n", e.Mod.Path, e.Mod.Version)
_, err := w.Write([]byte(row))
return err
}