hugo/releaser/releaser.go

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// Copyright 2024 The Hugo Authors. All rights reserved.
//
// 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 releaser implements a set of utilities to help automate the
// Hugo release process.
package releaser
import (
"fmt"
"log"
"os"
"path/filepath"
"regexp"
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"strings"
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"github.com/gohugoio/hugo/common/hexec"
"github.com/gohugoio/hugo/common/hugo"
)
const commitPrefix = "releaser:"
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// New initializes a ReleaseHandler.
func New(skipPush, try bool, step int) (*ReleaseHandler, error) {
if step < 1 || step > 2 {
return nil, fmt.Errorf("step must be 1 or 2")
}
prefix := "release-"
branch, err := git("rev-parse", "--abbrev-ref", "HEAD")
if err != nil {
return nil, err
}
branch = strings.TrimSpace(branch)
if !strings.HasPrefix(branch, prefix) {
return nil, fmt.Errorf("branch %q is not a release branch", branch)
}
version := strings.TrimPrefix(branch, prefix)
version = strings.TrimPrefix(version, "v")
logf("Branch: %s|Version: v%s\n", branch, version)
rh := &ReleaseHandler{branchVersion: version, skipPush: skipPush, try: try, step: step}
if try {
rh.git = func(args ...string) (string, error) {
logln("git", strings.Join(args, " "))
return "", nil
}
} else {
rh.git = git
}
return rh, nil
}
// ReleaseHandler provides functionality to release a new version of Hugo.
// Test this locally without doing an actual release:
// go run -tags release main.go release --skip-publish --try -r 0.90.0
// Or a variation of the above -- the skip-publish flag makes sure that any changes are performed to the local Git only.
type ReleaseHandler struct {
branchVersion string
// 1 or 2.
step int
// No remote pushes.
skipPush bool
// Just simulate, no actual changes.
try bool
git func(args ...string) (string, error)
}
// Run creates a new release.
func (r *ReleaseHandler) Run() error {
newVersion, finalVersion := r.calculateVersions()
version := newVersion.String()
tag := "v" + version
mainVersion := newVersion
mainVersion.PatchLevel = 0
r.gitPull()
defer r.gitPush()
if r.step == 1 {
if err := r.bumpVersions(newVersion); err != nil {
return err
}
if _, err := r.git("commit", "-a", "-m", fmt.Sprintf("%s Bump versions for release of %s\n\n[ci skip]", commitPrefix, newVersion)); err != nil {
return err
}
// The above commit will be the target for this release, so print it to the console in a env friendly way.
sha, err := git("rev-parse", "HEAD")
if err != nil {
return err
}
// Hugoreleaser will do the actual release using these values.
if err := r.replaceInFile("hugoreleaser.env",
`HUGORELEASER_TAG=(\S*)`, "HUGORELEASER_TAG="+tag,
`HUGORELEASER_COMMITISH=(\S*)`, "HUGORELEASER_COMMITISH="+sha,
); err != nil {
return err
}
logf("HUGORELEASER_TAG=%s\n", tag)
logf("HUGORELEASER_COMMITISH=%s\n", sha)
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return nil
}
if err := r.bumpVersions(finalVersion); err != nil {
return err
}
if _, err := r.git("commit", "-a", "-m", fmt.Sprintf("%s Prepare repository for %s\n\n[ci skip]", commitPrefix, finalVersion)); err != nil {
return err
}
return nil
}
func (r *ReleaseHandler) bumpVersions(ver hugo.Version) error {
toDev := ""
if ver.Suffix != "" {
toDev = ver.Suffix
}
if err := r.replaceInFile("common/hugo/version_current.go",
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`Minor:(\s*)(\d*),`, fmt.Sprintf(`Minor:${1}%d,`, ver.Minor),
`PatchLevel:(\s*)(\d*),`, fmt.Sprintf(`PatchLevel:${1}%d,`, ver.PatchLevel),
`Suffix:(\s*)".*",`, fmt.Sprintf(`Suffix:${1}"%s",`, toDev)); err != nil {
return err
}
var minVersion string
if ver.Suffix != "" {
// People use the DEV version in daily use, and we cannot create new themes
// with the next version before it is released.
minVersion = ver.Prev().String()
} else {
minVersion = ver.String()
}
if err := r.replaceInFile("commands/new.go",
`min_version = "(.*)"`, fmt.Sprintf(`min_version = "%s"`, minVersion)); err != nil {
return err
}
return nil
}
func (r ReleaseHandler) calculateVersions() (hugo.Version, hugo.Version) {
newVersion := hugo.MustParseVersion(r.branchVersion)
finalVersion := newVersion.Next()
finalVersion.PatchLevel = 0
if newVersion.Suffix != "-test" {
newVersion.Suffix = ""
}
finalVersion.Suffix = "-DEV"
return newVersion, finalVersion
}
func (r *ReleaseHandler) gitPull() {
if _, err := r.git("pull", "origin", "HEAD"); err != nil {
log.Fatal("pull failed:", err)
}
}
func (r *ReleaseHandler) gitPush() {
if r.skipPush {
return
}
if _, err := r.git("push", "origin", "HEAD"); err != nil {
log.Fatal("push failed:", err)
}
}
func (r *ReleaseHandler) replaceInFile(filename string, oldNew ...string) error {
filename = filepath.FromSlash(filename)
fi, err := os.Stat(filename)
if err != nil {
return err
}
if r.try {
logf("Replace in %q: %q\n", filename, oldNew)
return nil
}
b, err := os.ReadFile(filename)
if err != nil {
return err
}
newContent := string(b)
for i := 0; i < len(oldNew); i += 2 {
re := regexp.MustCompile(oldNew[i])
newContent = re.ReplaceAllString(newContent, oldNew[i+1])
}
return os.WriteFile(filename, []byte(newContent), fi.Mode())
}
func git(args ...string) (string, error) {
cmd, _ := hexec.SafeCommand("git", args...)
out, err := cmd.CombinedOutput()
if err != nil {
return "", fmt.Errorf("git failed: %q: %q (%q)", err, out, args)
}
return string(out), nil
}
func logf(format string, args ...interface{}) {
fmt.Fprintf(os.Stderr, format, args...)
}
func logln(args ...interface{}) {
fmt.Fprintln(os.Stderr, args...)
}