prosediff.php
a2dbae060a5eproduction

prosediff.php
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			#!/usr/bin/env php
			<?php

			require_once dirname(__FILE__).'/../__init_script__.php';

			$args = new PhutilArgumentParser($argv);
			$args->setTagline(pht('show prose differences'));
			$args->setSynopsis(<<<EOHELP
			prosediff.php __old__ __new__ [__options__]
			Diff two prose files.

			EOHELP
			);

			$args->parseStandardArguments();
			$args->parse(
			array(
			array(
			'name' => 'files',
			'wildcard' => true,
			),
			));

			$files = $args->getArg('files');
			if (count($files) !== 2) {
			$args->printHelpAndExit();
			}
			$old_file = head($files);
			$new_file = last($files);

			$old_data = Filesystem::readFile($old_file);
			$new_data = Filesystem::readFile($new_file);

			$engine = new PhutilProseDifferenceEngine();

			$prose_diff = $engine->getDiff($old_data, $new_data);

			foreach ($prose_diff->getParts() as $part) {
			switch ($part['type']) {
			case '-':
			echo tsprintf('<bg:red>%B</bg>', $part['text']);
			break;
			case '+':
			echo tsprintf('<bg:green>%B</bg>', $part['text']);
			break;
			case '=':
			echo tsprintf('%B', $part['text']);
			break;
			}
			}