Graze\DiffRenderer\Terminal\ANSI

Complexity

Total Complexity

12

Size/Duplication

Total Lines	144
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Importance

Changes

0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	move()	0	4	1
A	moveUp()	0	4	1
A	moveDown()	0	4	1
A	moveLeft()	0	4	1
A	moveRight()	0	4	1
A	eraseToEnd()	0	4	1
A	eraseToStart()	0	4	1
A	eraseDown()	0	4	1
A	eraseUp()	0	4	1
A	eraseScreen()	0	4	1
B	filter()	0	25	2

<?php
/**
 * This file is part of graze/console-diff-renderer.
 *
 * Copyright (c) 2017 Nature Delivered Ltd. <https://www.graze.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @license https://github.com/graze/console-diff-renderer/blob/master/LICENSE.md
 * @link    https://github.com/graze/console-diff-renderer
 */

namespace Graze\DiffRenderer\Terminal;

class ANSI implements CursorInterface
{
    const ESCAPE = "\e";

    const CODE_MOVE_POSITION   = '[%d;%dH'; // line, column
    const CODE_MOVE_UP_LINES   = '[%dA'; // lines
    const CODE_MOVE_DOWN_LINES = '[%dB'; // lines
    const CODE_MOVE_FORWARD    = '[%dC'; // columns
    const CODE_MOVE_BACKWARDS  = '[%dD'; // columns

    const CODE_ERASE_TO_END_OF_LINE   = '[K';
    const CODE_ERASE_TO_START_OF_LINE = '[1K';
    const CODE_ERASE_LINE             = '[2K';
    const CODE_ERASE_DOWN             = '[J';
    const CODE_ERASE_UP               = '[1J';
    const CODE_ERASE_SCREEN           = '[2J';

    /** @var array */
    protected $filter = [];

    /**
     * @param int $line
     * @param int $column
     *
     * @return string
     */
    public function move($line, $column)
    {
        return static::ESCAPE . sprintf(static::CODE_MOVE_POSITION, $line, $column);
    }

    /**
     * @param int $lines
     *
     * @return string
     */
    public function moveUp($lines)
    {
        return static::ESCAPE . sprintf(static::CODE_MOVE_UP_LINES, $lines);
    }

    /**
     * @param int $lines
     *
     * @return string
     */
    public function moveDown($lines)
    {
        return static::ESCAPE . sprintf(static::CODE_MOVE_DOWN_LINES, $lines);
    }

    /**
     * @param int $columns
     *
     * @return string
     */
    public function moveLeft($columns)
    {
        return static::ESCAPE . sprintf(static::CODE_MOVE_BACKWARDS, $columns);
    }

    /**
     * @param int $columns
     *
     * @return string
     */
    public function moveRight($columns)
    {
        return static::ESCAPE . sprintf(static::CODE_MOVE_FORWARD, $columns);
    }

    /**
     * @return string
     */
    public function eraseToEnd()
    {
        return static::ESCAPE . static::CODE_ERASE_TO_END_OF_LINE;
    }

    /**
     * @return string
     */
    public function eraseToStart()
    {
        return static::ESCAPE . static::CODE_ERASE_TO_START_OF_LINE;
    }

    /**
     * @return string
     */
    public function eraseDown()
    {
        return static::ESCAPE . static::CODE_ERASE_DOWN;
    }

    /**
     * @return string
     */
    public function eraseUp()
    {
        return static::ESCAPE . static::CODE_ERASE_UP;
    }

    /**
     * @return string
     */
    public function eraseScreen()
    {
        return static::ESCAPE . static::CODE_ERASE_SCREEN;
    }

    /**
     * Filter takes a string with Cursor movements and filters them out
     *
     * @param string $string
     *
     * @return string
     */
    public function filter($string)
    {
        if (count($this->filter) === 0) {
            $items = [
                self::ESCAPE . self::CODE_MOVE_POSITION,
                self::ESCAPE . self::CODE_MOVE_UP_LINES,
                self::ESCAPE . self::CODE_MOVE_DOWN_LINES,
                self::ESCAPE . self::CODE_MOVE_FORWARD,
                self::ESCAPE . self::CODE_MOVE_BACKWARDS,
                self::ESCAPE . self::CODE_ERASE_TO_END_OF_LINE,
                self::ESCAPE . self::CODE_ERASE_TO_START_OF_LINE,
                self::ESCAPE . self::CODE_ERASE_LINE,
                self::ESCAPE . self::CODE_ERASE_DOWN,
                self::ESCAPE . self::CODE_ERASE_UP,
                self::ESCAPE . self::CODE_ERASE_SCREEN,
                "\r",
                "\n",
            ];
            $this->filter = array_map(function ($line) {
                return '/' . str_replace(['%d', '['], ['\d+', '\['], $line) . '/';
            }, $items);
        }

        return preg_replace($this->filter, '', $string);
    }
}