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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;
}
}
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