java-diff-utils/java-diff-utils
Java Diff Utils
Java Diff Utils is a library for computing text differences, generating unified diffs, parsing patches, and applying changes to data in Java applications. It functions as a utility for comparing text sequences, calculating additions and deletions, and generating structured difference comparisons, while also acting as a patch generation library for creating, parsing, and applying standard unified patches to synchronize and update text content.
The library calculates the shortest edit script between two sequences using dynamic programming to identify optimal additions, deletions, and modifications. It represents text changes as discrete delta objects containing line ranges and content blocks for targeted modifications, and allows plugging in custom equivalence checkers and comparators to evaluate sequence elements based on domain-specific rules.
Additional capabilities include applying computed change instructions to update existing content or reversing those exact operations to restore original data. It also transforms raw change structures into human-readable unified outputs or side-by-side rows with inline markup highlights, and reads text patch files to reconstruct structured change instructions for automated data synchronization.
Features
- Myers Sequence Diff Calculations - Calculates the shortest edit script between two sequences using dynamic programming to identify optimal additions, deletions, and modifications.
- Text Difference Computation - Calculates structural differences between text sequences and data sets using dynamic programming to identify additions and deletions.
- Java Diff Libraries - Provides a robust Java library for computing text differences, generating unified diffs, and applying patches.
- Logical Unit Reverts - Applies computed change instructions to update existing content or reverses those exact operations to restore original data.
- Patch Reversion - Applies patch instructions to modify target text content and reverses those exact operations to restore original data.
- Patch Representations - Represents text changes as discrete delta objects containing line ranges and content blocks for targeted modifications.
- Patch Application - Applies computed change instructions to update existing content or reverses those exact operations to restore original data.
- Patch Parsing - Reads and interprets text patch files to reconstruct structured change instructions for automated data synchronization.
- Sequence Comparison Algorithms - Allows plugging in custom equivalence checkers and comparators to evaluate sequence elements based on domain-specific rules.
- Text Diffing and Patching Libraries - Offers comprehensive text diffing and patching capabilities to synchronize and update text content.
- Stateful Diff Parsing - Parses standard text patch files and generates structured change instructions for automated data synchronization.
- Unified Diff Generators - Transforms raw change structures into human-readable unified outputs or side-by-side rows with inline markup highlights.
- Diff Generation Utilities - Calculates textual additions, deletions, and structured differences between sequences.
- Side-By-Side Diff Tools - Generate human-readable comparison rows featuring inline highlights and custom formatting tags for clear side-by-side display views.
- Side-by-Side Diff Viewers - Renders code differences in a dual-pane layout with inline markup highlights for clear visual comparisons.
- Dataset Patch Appliers - Apply imported change instructions to an original data set to produce a revised and updated version.
Star history
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