feat: update version references in any files

action.yml

@@ -12,14 +12,19 @@ inputs:
     description: 'GitHub token for creating and grooming release PRs, defaults to using secrets.GITHUB_TOKEN'
     required: false
     default: ${{ github.token }}
+  extra-files:
+    description: 'List of files that are scanned for version references.'
+    required: false
+    default: ""
 outputs: {}
 runs:
   using: 'docker'
-  image: ghcr.io/apricote/releaser-pleaser:v0.1.0
+  image: ghcr.io/apricote/releaser-pleaser:v0.1.0 # x-releaser-pleaser-version
   args:
     - run
     - --forge=github
     - --branch=${{ inputs.branch }}
+    - --extra-files="${{ inputs.extra-files }}"
   env:
     GITHUB_TOKEN: ${{ inputs.token }}
     GITHUB_USER: "oauth2"

cmd/rp/cmd/run.go

@@ -1,6 +1,8 @@
 package cmd
 
 import (
+	"strings"
+
 	"github.com/spf13/cobra"
 
 	rp "github.com/apricote/releaser-pleaser"
@@ -17,6 +19,7 @@ var (
 	flagBranch     string
 	flagOwner      string
 	flagRepo       string
+	flagExtraFiles string
 )
 
 func init() {
@@ -28,6 +31,7 @@ func init() {
 	runCmd.PersistentFlags().StringVar(&flagBranch, "branch", "main", "")
 	runCmd.PersistentFlags().StringVar(&flagOwner, "owner", "", "")
 	runCmd.PersistentFlags().StringVar(&flagRepo, "repo", "", "")
+	runCmd.PersistentFlags().StringVar(&flagExtraFiles, "extra-files", "", "")
 }
 
 func run(cmd *cobra.Command, _ []string) error {
@@ -59,7 +63,31 @@ func run(cmd *cobra.Command, _ []string) error {
 		})
 	}
 
-	releaserPleaser := rp.New(forge, logger, flagBranch, rp.NewConventionalCommitsParser(), rp.SemVerNextVersion)
+	extraFiles := parseExtraFiles(flagExtraFiles)
+
+	releaserPleaser := rp.New(
+		forge,
+		logger,
+		flagBranch,
+		rp.NewConventionalCommitsParser(),
+		rp.SemVerNextVersion,
+		extraFiles,
+		[]rp.Updater{&rp.GenericUpdater{}},
+	)
 
 	return releaserPleaser.Run(ctx)
 }
+
+func parseExtraFiles(input string) []string {
+	lines := strings.Split(input, "\n")
+
+	extraFiles := make([]string, 0, len(lines))
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if len(line) > 0 {
+			extraFiles = append(extraFiles, line)
+		}
+	}
+
+	return extraFiles
+}

releaserpleaser.go

@@ -3,7 +3,9 @@ package rp
 import (
 	"context"
 	"fmt"
+	"io"
 	"log/slog"
+	"os"
 
 	"github.com/go-git/go-git/v5"
 	"github.com/go-git/go-git/v5/config"
@@ -20,15 +22,19 @@ type ReleaserPleaser struct {
 	targetBranch string
 	commitParser CommitParser
 	nextVersion  VersioningStrategy
+	extraFiles   []string
+	updaters     []Updater
 }
 
-func New(forge Forge, logger *slog.Logger, targetBranch string, commitParser CommitParser, versioningStrategy VersioningStrategy) *ReleaserPleaser {
+func New(forge Forge, logger *slog.Logger, targetBranch string, commitParser CommitParser, versioningStrategy VersioningStrategy, extraFiles []string, updaters []Updater) *ReleaserPleaser {
 	return &ReleaserPleaser{
 		forge:        forge,
 		logger:       logger,
 		targetBranch: targetBranch,
 		commitParser: commitParser,
 		nextVersion:  versioningStrategy,
+		extraFiles:   extraFiles,
+		updaters:     updaters,
 	}
 }
 
@@ -236,21 +242,60 @@ func (rp *ReleaserPleaser) runReconcileReleasePR(ctx context.Context) error {
 		return fmt.Errorf("failed to check out branch: %w", err)
 	}
 
-	err = RunUpdater(ctx, nextVersion, worktree)
-	if err != nil {
-		return fmt.Errorf("failed to update files with new version: %w", err)
-	}
-
 	changelogEntry, err := NewChangelogEntry(analyzedCommits, nextVersion, rp.forge.ReleaseURL(nextVersion), releaseOverrides.Prefix, releaseOverrides.Suffix)
 	if err != nil {
 		return fmt.Errorf("failed to build changelog entry: %w", err)
 	}
 
+	// TODO: Fold UpdateChangelogFile into generalized Updater
 	err = UpdateChangelogFile(worktree, changelogEntry)
 	if err != nil {
 		return fmt.Errorf("failed to update changelog file: %w", err)
 	}
 
+	for _, extraFile := range rp.extraFiles {
+		_, err := worktree.Filesystem.Stat(extraFile)
+		if err != nil {
+			// TODO: Check for non existing file or dirs
+			return fmt.Errorf("failed to run file updater: %w", err)
+		}
+
+		file, err := worktree.Filesystem.OpenFile(extraFile, os.O_RDWR, 0)
+		if err != nil {
+			return err
+		}
+		defer file.Close()
+
+		content, err := io.ReadAll(file)
+		if err != nil {
+			return err
+		}
+
+		updatedContent := string(content)
+
+		for _, updater := range rp.updaters {
+			updatedContent = updater.UpdateContent(updatedContent, nextVersion)
+		}
+
+		err = file.Truncate(0)
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+		_, err = file.Seek(0, 0)
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+		_, err = file.Write([]byte(updatedContent))
+		if err != nil {
+			return fmt.Errorf("failed to replace file content: %w", err)
+		}
+
+		_, err = worktree.Add(extraFile)
+		if err != nil {
+			return fmt.Errorf("failed to add updated file to git worktree: %w", err)
+		}
+	}
+
 	releaseCommitMessage := fmt.Sprintf("chore(%s): release %s", rp.targetBranch, nextVersion)
 	releaseCommitHash, err := worktree.Commit(releaseCommitMessage, &git.CommitOptions{
 		Author:    GitSignature(),

updater.go

@@ -1,12 +1,38 @@
 package rp
 
 import (
-	"context"
-
-	"github.com/go-git/go-git/v5"
+	"regexp"
+	"strings"
 )
 
-func RunUpdater(ctx context.Context, version string, worktree *git.Worktree) error {
-	// TODO: Implement updater for Go,Python,ExtraFilesMarkers
-	return nil
+const (
+	InlineUpdateMarker = "x-releaser-pleaser-version"
+)
+
+var (
+	SemVerRegex = regexp.MustCompile(`(?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)(-(?<preRelease>[\w.]+))?(\+(?<build>[-\w.]+))?`)
+)
+
+type Updater interface {
+	UpdateContent(content, version string) string
+}
+
+type GenericUpdater struct{}
+
+func (u *GenericUpdater) UpdateContent(content, version string) string {
+	// TODO: use buffered input/output
+	output := strings.Builder{}
+	output.Grow(len(content))
+	for _, line := range strings.Split(content, "\n") {
+		if strings.Contains(line, InlineUpdateMarker) {
+			// We strip the "v" prefix to avoid adding/removing it from the users input.
+			line = SemVerRegex.ReplaceAllLiteralString(line, strings.TrimPrefix(version, "v"))
+		}
+
+		output.WriteString(line)
+		// TODO: Fix added newline
+		output.WriteByte('\n')
+	}
+
+	return output.String()
 }