`--listed-incremental` (optional, if time allows) #136

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opened 2026-04-09 16:59:36 +00:00 by fuzzy · 1 comment

fuzzy commented

2026-04-09 16:59:36 +00:00

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fuzzy added this to the Phase 7: GNU tar Compatibility and Advanced Features milestone

2026-04-09 16:59:36 +00:00

fuzzy self-assigned this

2026-04-09 16:59:36 +00:00

fuzzy referenced this issue

2026-04-09 16:59:37 +00:00

Complete CLI flag parity with GNU tar #141

fuzzy commented

2026-04-12 10:58:08 +00:00

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Implemented --listed-incremental flag for --create and --extract modes.

Create mode: Reads a snapshot file (JSON format) containing previous backup state (path, mtime, size). Files unchanged since the snapshot are skipped; changed or new files are added. After the archive is created, the snapshot is updated with current file metadata.

Extract mode: Updates the snapshot with metadata of extracted files (as stored in the archive), so future incremental backups treat them as up-to-date.

Snapshot format is JSON for simplicity; each entry includes absolute path, modification time, and size. Directories and symlinks are also recorded (size 0).

This provides GNU tar‑style incremental backup support within reptar’s multi‑format architecture.

Implemented `--listed-incremental` flag for `--create` and `--extract` modes. **Create mode:** Reads a snapshot file (JSON format) containing previous backup state (path, mtime, size). Files unchanged since the snapshot are skipped; changed or new files are added. After the archive is created, the snapshot is updated with current file metadata. **Extract mode:** Updates the snapshot with metadata of extracted files (as stored in the archive), so future incremental backups treat them as up-to-date. Snapshot format is JSON for simplicity; each entry includes absolute path, modification time, and size. Directories and symlinks are also recorded (size 0). This provides GNU tar‑style incremental backup support within reptar’s multi‑format architecture.

fuzzy closed this issue

2026-04-12 10:58:15 +00:00