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<?php

declare(strict_types=1);

include __DIR__ . '/../vendor/autoload.php';

use Jfcherng\Diff\Differ;

use Jfcherng\Diff\Renderer\RendererConstant;

// the two sample files for comparison

$oldFile = __DIR__ . '/old_file.txt';

$newFile = __DIR__ . '/new_file.txt';

$oldString = file_get_contents($oldFile);

$newString = file_get_contents($newFile);

// options for Diff class

$diffOptions = [

// show how many neighbor lines

// Differ::CONTEXT_ALL can be used to show the whole file

'context' => 1,

// ignore case difference

'ignoreCase' => false,

// ignore whitespace difference

'ignoreWhitespace' => false,

];

// options for renderer class

$rendererOptions = [

// how detailed the rendered HTML is? (none, line, word, char)

'detailLevel' => 'line',

// renderer language: eng, cht, chs, jpn, ...

// or an array which has the same keys with a language file

'language' => 'eng',

// show line numbers in HTML renderers

'lineNumbers' => true,

// show a separator between different diff hunks in HTML renderers

'separateBlock' => true,

// show the (table) header

'showHeader' => true,

// the frontend HTML could use CSS "white-space: pre;" to visualize consecutive whitespaces

// but if you want to visualize them in the backend with "&nbsp;", you can set this to true

'spacesToNbsp' => false,

// HTML renderer tab width (negative = do not convert into spaces)

'tabSize' => 4,

// this option is currently only for the Combined renderer.

// it determines whether a replace-type block should be merged or not

// depending on the content changed ratio, which values between 0 and 1.

'mergeThreshold' => 0.8,

// this option is currently only for the Unified and the Context renderers.

// RendererConstant::CLI_COLOR_AUTO = colorize the output if possible (default)

// RendererConstant::CLI_COLOR_ENABLE = force to colorize the output

// RendererConstant::CLI_COLOR_DISABLE = force not to colorize the output

'cliColorization' => RendererConstant::CLI_COLOR_AUTO,

// this option is currently only for the Json renderer.

// internally, ops (tags) are all int type but this is not good for human reading.

// set this to "true" to convert them into string form before outputting.

'outputTagAsString' => false,

// this option is currently only for the Json renderer.

// it controls how the output JSON is formatted.

// see available options on https://www.php.net/manual/en/function.json-encode.php

'jsonEncodeFlags' => \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE,

// this option is currently effective when the "detailLevel" is "word"

// characters listed in this array can be used to make diff segments into a whole

// for example, making "<del>good</del>-<del>looking</del>" into "<del>good-looking</del>"

// this should bring better readability but set this to empty array if you do not want it

'wordGlues' => [' ', '-'],

// change this value to a string as the returned diff if the two input strings are identical

'resultForIdenticals' => null,

// extra HTML classes added to the DOM of the diff container

'wrapperClasses' => ['diff-wrapper'],

];