depicter / vendor / symfony / console / Cursor.php

Cursor.php in Depicter — Popup & Slider Builder trunk, at vendor/symfony/console/Cursor.php

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1	<?php
2
3	/*
4	* This file is part of the Symfony package.
5	*
6	* (c) Fabien Potencier <[email protected]>
7	*
8	* For the full copyright and license information, please view the LICENSE
9	* file that was distributed with this source code.
10	*/
11
12	namespace Symfony\Component\Console;
13
14	use Symfony\Component\Console\Output\OutputInterface;
15
16	/**
17	* @author Pierre du Plessis <[email protected]>
18	*/
19	final class Cursor
20	{
21	private $output;
22	private $input;
23
24	/**
25	* @param resource\|null $input
26	*/
27	public function __construct(OutputInterface $output, $input = null)
28	{
29	$this->output = $output;
30	$this->input = $input ?? (\defined('STDIN') ? \STDIN : fopen('php://input', 'r+'));
31	}
32
33	/**
34	* @return $this
35	*/
36	public function moveUp(int $lines = 1): self
37	{
38	$this->output->write(sprintf("\x1b[%dA", $lines));
39
40	return $this;
41	}
42
43	/**
44	* @return $this
45	*/
46	public function moveDown(int $lines = 1): self
47	{
48	$this->output->write(sprintf("\x1b[%dB", $lines));
49
50	return $this;
51	}
52
53	/**
54	* @return $this
55	*/
56	public function moveRight(int $columns = 1): self
57	{
58	$this->output->write(sprintf("\x1b[%dC", $columns));
59
60	return $this;
61	}
62
63	/**
64	* @return $this
65	*/
66	public function moveLeft(int $columns = 1): self
67	{
68	$this->output->write(sprintf("\x1b[%dD", $columns));
69
70	return $this;
71	}
72
73	/**
74	* @return $this
75	*/
76	public function moveToColumn(int $column): self
77	{
78	$this->output->write(sprintf("\x1b[%dG", $column));
79
80	return $this;
81	}
82
83	/**
84	* @return $this
85	*/
86	public function moveToPosition(int $column, int $row): self
87	{
88	$this->output->write(sprintf("\x1b[%d;%dH", $row + 1, $column));
89
90	return $this;
91	}
92
93	/**
94	* @return $this
95	*/
96	public function savePosition(): self
97	{
98	$this->output->write("\x1b7");
99
100	return $this;
101	}
102
103	/**
104	* @return $this
105	*/
106	public function restorePosition(): self
107	{
108	$this->output->write("\x1b8");
109
110	return $this;
111	}
112
113	/**
114	* @return $this
115	*/
116	public function hide(): self
117	{
118	$this->output->write("\x1b[?25l");
119
120	return $this;
121	}
122
123	/**
124	* @return $this
125	*/
126	public function show(): self
127	{
128	$this->output->write("\x1b[?25h\x1b[?0c");
129
130	return $this;
131	}
132
133	/**
134	* Clears all the output from the current line.
135	*
136	* @return $this
137	*/
138	public function clearLine(): self
139	{
140	$this->output->write("\x1b[2K");
141
142	return $this;
143	}
144
145	/**
146	* Clears all the output from the current line after the current position.
147	*/
148	public function clearLineAfter(): self
149	{
150	$this->output->write("\x1b[K");
151
152	return $this;
153	}
154
155	/**
156	* Clears all the output from the cursors' current position to the end of the screen.
157	*
158	* @return $this
159	*/
160	public function clearOutput(): self
161	{
162	$this->output->write("\x1b[0J");
163
164	return $this;
165	}
166
167	/**
168	* Clears the entire screen.
169	*
170	* @return $this
171	*/
172	public function clearScreen(): self
173	{
174	$this->output->write("\x1b[2J");
175
176	return $this;
177	}
178
179	/**
180	* Returns the current cursor position as x,y coordinates.
181	*/
182	public function getCurrentPosition(): array
183	{
184	static $isTtySupported;
185
186	if (null === $isTtySupported && \function_exists('proc_open')) {
187	$isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes);
188	}
189
190	if (!$isTtySupported) {
191	return [1, 1];
192	}
193
194	$sttyMode = shell_exec('stty -g');
195	shell_exec('stty -icanon -echo');
196
197	@fwrite($this->input, "\033[6n");
198
199	$code = trim(fread($this->input, 1024));
200
201	shell_exec(sprintf('stty %s', $sttyMode));
202
203	sscanf($code, "\033[%d;%dR", $row, $col);
204
205	return [$col, $row];
206	}
207	}
208