UnixTerminal::getHeight() - Code Metrics - Inspection of "Refactor IO" - php-school/cli-menu - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#80)

by Aydin

created 2018-04-16 19:32 UTC

UnixTerminal::getHeight() A

↳ Parent: UnixTerminal

Complexity

Conditions	2
Paths	2

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	4
rs	10
c	0
b	0
f	0
cc	2
eloc	2
nc	2
nop	0

<?php

namespace PhpSchool\CliMenu\Terminal;

use PhpSchool\CliMenu\IO\InputStream;
use PhpSchool\CliMenu\IO\OutputStream;

/**
 * @author Michael Woodward <[email protected]>
 */
class UnixTerminal implements TerminalInterface
{
    /**
     * @var bool
     */
    private $isTTY;

    /**
     * @var bool
     */
    private $isCanonical = false;

    /**
     * @var int
     */
    private $width;

    /**
     * @var int
     */
    private $height;

    /**
     * @var string
     */
    private $details;

    /**
     * @var string
     */
    private $originalConfiguration;

    /**
     * @var InputStream
     */
    private $input;

    /**
     * @var OutputStream
     */
    private $output;

    /**
     * Initialise the terminal from resource
     *
     */
    public function __construct(InputStream $input, OutputStream $output)
    {
        $this->getOriginalConfiguration();
        $this->input = $input;
        $this->output = $output;
    }

    /**
     * Get the available width of the terminal
     */
    public function getWidth() : int
    {
        return $this->width ?: $this->width = (int) exec('tput cols');
    }

    /**
     * Get the available height of the terminal
     */
    public function getHeight() : int
    {
        return $this->height ?: $this->height = (int) exec('tput lines');
    }

    /**
     * Get terminal details
     */
    public function getDetails() : string
    {
        if (!$this->details) {
            $this->details = function_exists('posix_ttyname')
                ? @posix_ttyname(STDOUT)
                : "Can't retrieve terminal details";
        }

        return $this->details;
    }

    /**
     * Get the original terminal configuration / mode
     */
    private function getOriginalConfiguration() : string
    {
        return $this->originalConfiguration ?: $this->originalConfiguration = exec('stty -g');
    }

    /**
     * Toggle canonical mode on TTY
     */
    public function setCanonicalMode(bool $useCanonicalMode = true) : void
    {
        if ($useCanonicalMode) {
            exec('stty -icanon');
            $this->isCanonical = true;
        } else {
            exec('stty ' . $this->getOriginalConfiguration());
            $this->isCanonical = false;
        }
    }

    /**
     * Check if TTY is in canonical mode
     * Assumes the terminal was never in canonical mode
     */
    public function isCanonical() : bool
    {
        return $this->isCanonical;
    }

    /**
     * Test whether terminal is valid TTY
     */
    public function isTTY() : bool
    {
        return $this->isTTY ?: $this->isTTY = function_exists('posix_isatty') && @posix_isatty(STDOUT);
    }

    /**
     * Test whether terminal supports colour output
     *
     * @link https://github.com/symfony/Console/blob/master/Output/StreamOutput.php#L95-L102
     */
    public function supportsColour() : bool
    {
        if (DIRECTORY_SEPARATOR === '\\') {
            return false !== getenv('ANSICON') || 'ON' === getenv('ConEmuANSI') || 'xterm' === getenv('TERM');
        }

        return $this->isTTY();
    }

    public function getKeyedInput(array $map = []) : ?string
    {
        // TODO: Move to class var?
        // TODO: up, down, enter etc in Abstract CONSTs
        $map = [
            "\033[A" => 'up',
            "k"      => 'up',
            ""      => 'up', // emacs ^P
            "\033[B" => 'down',
            "j"      => 'down',
            ""      => 'down', //emacs ^N
            "\n"     => 'enter',
            "\r"     => 'enter',
            " "      => 'enter',
        ];

        $input = '';
        $this->input->read(4, function ($buffer) use (&$input) {
            $input .= $buffer;
        });

        $this->clearLine();

        return array_key_exists($input, $map)
            ? $map[$input]
            : $input;
    }

    /**
     * Clear the terminal window
     */
    public function clear() : void
    {
        $this->output->write("\033[2J");
    }

    /**
     * Enable cursor
     */
    public function enableCursor() : void
    {
        $this->output->write("\033[?25h");
    }

    /**
     * Disable cursor
     */
    public function disableCursor() : void
    {
        $this->output->write("\033[?25l");
    }

    /**
     * Move the cursor to the top left of the window
     *
     * @return void
     */
    public function moveCursorToTop() : void
    {
        $this->output->write("\033[H");
    }

    /**
     * Move the cursor to the start of a specific row
     */
    public function moveCursorToRow(int $rowNumber) : void
    {
        $this->output->write(sprintf("\033[%d;0H", $rowNumber));
    }

    /**
     * Move the cursor to the start of a specific column
     */
    public function moveCursorToColumn(int $column) : void
    {
        $this->output->write(sprintf("\033[%dC", $column));
    }

    /**
     * Clear the current cursors line
     */
    public function clearLine() : void
    {
        $this->output->write(sprintf("\033[%dD\033[K", $this->getWidth()));
    }

    /**
     * Clean the whole console without jumping the window
     */
    public function clean() : void
    {
        foreach (range(0, $this->getHeight()) as $rowNum) {
            $this->moveCursorToRow($rowNum);
            $this->clearLine();
        }
    }

    public function getOutput() : OutputStream
    {
        return $this->output;
    }
}


1			<?php
2
3			namespace PhpSchool\CliMenu\Terminal;
4
5			use PhpSchool\CliMenu\IO\InputStream;
6			use PhpSchool\CliMenu\IO\OutputStream;
7
8			/**
9			* @author Michael Woodward <[email protected]>
10			*/
11			class UnixTerminal implements TerminalInterface
12			{
13			/**
14			* @var bool
15			*/
16			private $isTTY;
17
18			/**
19			* @var bool
20			*/
21			private $isCanonical = false;
22
23			/**
24			* @var int
25			*/
26			private $width;
27
28			/**
29			* @var int
30			*/
31			private $height;
32
33			/**
34			* @var string
35			*/
36			private $details;
37
38			/**
39			* @var string
40			*/
41			private $originalConfiguration;
42
43			/**
44			* @var InputStream
45			*/
46			private $input;
47
48			/**
49			* @var OutputStream
50			*/
51			private $output;
52
53			/**
54			* Initialise the terminal from resource
55			*
56			*/
57			public function __construct(InputStream $input, OutputStream $output)
58			{
59			$this->getOriginalConfiguration();
60			$this->input = $input;
61			$this->output = $output;
62			}
63
64			/**
65			* Get the available width of the terminal
66			*/
67			public function getWidth() : int
68			{
69			return $this->width ?: $this->width = (int) exec('tput cols');
70			}
71
72			/**
73			* Get the available height of the terminal
74			*/
75			public function getHeight() : int
76			{
77			return $this->height ?: $this->height = (int) exec('tput lines');
78			}
79
80			/**
81			* Get terminal details
82			*/
83			public function getDetails() : string
84			{
85			if (!$this->details) {
86			$this->details = function_exists('posix_ttyname')
87			? @posix_ttyname(STDOUT)
88			: "Can't retrieve terminal details";
89			}
90
91			return $this->details;
92			}
93
94			/**
95			* Get the original terminal configuration / mode
96			*/
97			private function getOriginalConfiguration() : string
98			{
99			return $this->originalConfiguration ?: $this->originalConfiguration = exec('stty -g');
100			}
101
102			/**
103			* Toggle canonical mode on TTY
104			*/
105			public function setCanonicalMode(bool $useCanonicalMode = true) : void
106			{
107			if ($useCanonicalMode) {
108			exec('stty -icanon');
109			$this->isCanonical = true;
110			} else {
111			exec('stty ' . $this->getOriginalConfiguration());
112			$this->isCanonical = false;
113			}
114			}
115
116			/**
117			* Check if TTY is in canonical mode
118			* Assumes the terminal was never in canonical mode
119			*/
120			public function isCanonical() : bool
121			{
122			return $this->isCanonical;
123			}
124
125			/**
126			* Test whether terminal is valid TTY
127			*/
128			public function isTTY() : bool
129			{
130			return $this->isTTY ?: $this->isTTY = function_exists('posix_isatty') && @posix_isatty(STDOUT);
131			}
132
133			/**
134			* Test whether terminal supports colour output
135			*
136			* @link https://github.com/symfony/Console/blob/master/Output/StreamOutput.php#L95-L102
137			*/
138			public function supportsColour() : bool
139			{
140			if (DIRECTORY_SEPARATOR === '\\') {
141			return false !== getenv('ANSICON') \|\| 'ON' === getenv('ConEmuANSI') \|\| 'xterm' === getenv('TERM');
142			}
143
144			return $this->isTTY();
145			}
146
147			public function getKeyedInput(array $map = []) : ?string
148			{
149			// TODO: Move to class var?
150			// TODO: up, down, enter etc in Abstract CONSTs
151			$map = [
152			"\033[A" => 'up',
153			"k" => 'up',
154			"" => 'up', // emacs ^P
155			"\033[B" => 'down',
156			"j" => 'down',
157			"" => 'down', //emacs ^N
158			"\n" => 'enter',
159			"\r" => 'enter',
160			" " => 'enter',
161			];
162
163			$input = '';
164			$this->input->read(4, function ($buffer) use (&$input) {
165			$input .= $buffer;
166			});
167
168			$this->clearLine();
169
170			return array_key_exists($input, $map)
171			? $map[$input]
172			: $input;
173			}
174
175			/**
176			* Clear the terminal window
177			*/
178			public function clear() : void
179			{
180			$this->output->write("\033[2J");
181			}
182
183			/**
184			* Enable cursor
185			*/
186			public function enableCursor() : void
187			{
188			$this->output->write("\033[?25h");
189			}
190
191			/**
192			* Disable cursor
193			*/
194			public function disableCursor() : void
195			{
196			$this->output->write("\033[?25l");
197			}
198
199			/**
200			* Move the cursor to the top left of the window
201			*
202			* @return void
203			*/
204			public function moveCursorToTop() : void
205			{
206			$this->output->write("\033[H");
207			}
208
209			/**
210			* Move the cursor to the start of a specific row
211			*/
212			public function moveCursorToRow(int $rowNumber) : void
213			{
214			$this->output->write(sprintf("\033[%d;0H", $rowNumber));
215			}
216
217			/**
218			* Move the cursor to the start of a specific column
219			*/
220			public function moveCursorToColumn(int $column) : void
221			{
222			$this->output->write(sprintf("\033[%dC", $column));
223			}
224
225			/**
226			* Clear the current cursors line
227			*/
228			public function clearLine() : void
229			{
230			$this->output->write(sprintf("\033[%dD\033[K", $this->getWidth()));
231			}
232
233			/**
234			* Clean the whole console without jumping the window
235			*/
236			public function clean() : void
237			{
238			foreach (range(0, $this->getHeight()) as $rowNum) {
239			$this->moveCursorToRow($rowNum);
240			$this->clearLine();
241			}
242			}
243
244			public function getOutput() : OutputStream
245			{
246			return $this->output;
247			}
248			}
249

php-school / cli-menu

Pull Request — master (#80)

UnixTerminal::getHeight() A

Complexity

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Duplication

Importance

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