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Alto Code Diff

Alto Code Diff compares text, renders structured differences, and parses, emits, or applies unified patches. It works with strings and in-memory path maps, so applications retain control of file and process access.

use Alto\Code\Diff\Diff;
use Alto\Code\Diff\Renderer\UnifiedRenderer;

$result = Diff::build()->compare("old\n", "new\n");
$output = (new UnifiedRenderer('old.txt', 'new.txt'))->render($result);

Documentation

  • Installation: install the package and verify its requirements.
  • Getting started: compare two strings and render a unified diff.
  • Diffing: configure comparisons, inspect results, and select an engine.
  • Rendering: produce unified text, HTML, JSON, or ANSI output.
  • Formats: emit, parse, and apply single-file or multi-file patches.
  • Errors: recover from rejected inputs and patches.

The package rejects binary input. It does not read or write files, invoke Git, or resolve patch conflicts automatically.