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syncdr 0.1.2

Security and robustness improvements

This release improves input validation, path handling, and error recovery across synchronization functions following an internal review. No new user-facing features are added.

Path handling improvements

• Improved internal path normalization and relative path computation to ensure consistent behavior across platforms and working directories.
• Reduced risk of incorrect path resolution when directory names contain special characters.

Input validation

• Added stricter validation for directory inputs to ensure they are valid, existing directories.
• Prevented use of identical or nested directories in synchronization operations.
• Added validation to ensure sync status objects are of the expected class.
• Added validation to prevent backup directories from overlapping with synchronization targets.

Backup and recovery improvements

• Centralized backup handling to improve consistency across synchronization functions.
• Improved verification of backup completion before modifications proceed.
• Enhanced backup directory naming to avoid overwriting previous backups.
• Added warning when temporary directories are used for backups.

Error handling improvements

• Improved handling of file permission issues with early checks before file operations.
• Enhanced resilience to individual file copy or deletion failures.
• Improved handling of files that change during synchronization.

Staleness detection

• Added timestamp tracking to synchronization status objects.
• Added warning when synchronization results may be outdated (configurable via options(syncdr.staleness_threshold_secs)).

API changes

• Default value of force changed from TRUE to FALSE in all sync functions.
• Default value of delete_in_right changed from TRUE to FALSE.
• overwrite is now an explicit user-controllable argument (default TRUE).

Documentation

• Improved documentation of synchronization parameters.
• Added package-level note on concurrency limitations and recommended use of file locking packages.

syncdr 0.1.0

Initial CRAN release.

Directory comparison

• Added compare_directories() to compare two directories by modification date, file content, or date-then-content.
• Detects newer/older/same-date files as well as files present only in one directory.
• Added print.syncdr_status() for formatted summaries of comparison results.

Visualization

• Added display_sync_status() for interactive visualization of comparison output.
• Added display_dir_tree() to show directory trees for one or two paths.

Asymmetric synchronization (left → right)

• Added full_asym_sync_to_right() for complete one-way synchronization.
• Added partial sync helpers:
  • common_files_asym_sync_to_right()
  • update_missing_files_asym_to_right()
  • partial_update_missing_files_asym_to_right()

Symmetric synchronization

• Added full_symmetric_sync() for two-way synchronization with conflict handling.
• Added partial_symmetric_sync_common_files() for partial symmetric updates.

Utilities

• Added toy_dirs() to create reproducible example directory structures.
• Added copy_temp_environment() for safe testing of directory operations.
• Added search_duplicates() for content-based duplicate detection.
• Added save_sync_status() to persist comparison results.

Documentation and tests

• Added introductory and workflow vignettes.
• Added unit tests covering comparison logic, synchronization functions, directory-tree display, and duplicate detection.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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