cmd/index-pack: Split files

1 files changed, 95 insertions, 0 deletions

diff --git a/cmd/index-pack/run.go b/cmd/index-pack/run.go
new file mode 100644
index 00000000..80e1db25
--- /dev/null
+++ b/cmd/index-pack/run.go
@@ -0,0 +1,95 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"codeberg.org/lindenii/furgit/format/packfile/ingest"
+	objectid "codeberg.org/lindenii/furgit/object/id"
+	objectstore "codeberg.org/lindenii/furgit/object/store"
+	"codeberg.org/lindenii/furgit/repository"
+)
+
+func run(repoPath, destinationPath, objectFormat string, fixThin, writeRev bool) error {
+	var (
+		algo objectid.Algorithm
+		base objectstore.ReadingStore
+		repo *repository.Repository
+	)
+
+	if repoPath != "" {
+		repoRoot, err := os.OpenRoot(repoPath)
+		if err != nil {
+			return fmt.Errorf("open repo root: %w", err)
+		}
+
+		defer func() { _ = repoRoot.Close() }()
+
+		repo, err = repository.Open(repoRoot)
+		if err != nil {
+			return fmt.Errorf("open repository: %w", err)
+		}
+
+		defer func() { _ = repo.Close() }()
+	}
+
+	algo, err := resolveAlgorithm(repo, objectFormat)
+	if err != nil {
+		return err
+	}
+
+	if fixThin {
+		if repo == nil {
+			return fmt.Errorf("fix-thin requires -r <repo>")
+		}
+
+		if repo.Algorithm() != algo {
+			return fmt.Errorf("algorithm mismatch: repo=%s flag=%s", repo.Algorithm(), algo)
+		}
+
+		base = repo.Objects()
+	}
+
+	absDestination, err := filepath.Abs(destinationPath)
+	if err != nil {
+		return fmt.Errorf("absolute destination path: %w", err)
+	}
+
+	destinationRoot, err := os.OpenRoot(absDestination)
+	if err != nil {
+		return fmt.Errorf("open destination root: %w", err)
+	}
+
+	defer func() { _ = destinationRoot.Close() }()
+
+	pending, err := ingest.Ingest(os.Stdin, algo, ingest.Options{
+		FixThin:            fixThin,
+		WriteRev:           writeRev,
+		Base:               base,
+		RequireTrailingEOF: true,
+	})
+	if err != nil {
+		return err
+	}
+
+	if pending.Header().ObjectCount == 0 {
+		discarded, err := pending.Discard()
+		if err != nil {
+			return err
+		}
+
+		_, _ = fmt.Fprintf(os.Stdout, "pack\t%s\n", discarded.PackHash.String())
+
+		return nil
+	}
+
+	result, err := pending.Continue(destinationRoot)
+	if err != nil {
+		return err
+	}
+
+	_, _ = fmt.Fprintf(os.Stdout, "pack\t%s\n", result.PackHash.String())
+
+	return nil
+}