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

Completed

Pull Request — master (#78)

by Aydin

created 2018-04-15 21:02 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;

/**
 * Class UnixTerminal
 *
 * @package PhpSchool\CliMenu\Terminal
 * @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;

    /**
     * Initialise the terminal from resource
     *
     */
    public function __construct()
    {
        $this->getOriginalConfiguration();
    }

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

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

    /**
     * Get terminal details
     *
     * @return string
     */
    public function getDetails()
    {
        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
     *
     * @return string
     */
    private function getOriginalConfiguration()
    {
        return $this->originalConfiguration ?: $this->originalConfiguration = exec('stty -g');
    }

    /**
     * Toggle canonical mode on TTY
     *
     * @param bool $useCanonicalMode
     */
    public function setCanonicalMode($useCanonicalMode = true)
    {
        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
     *
     * @return bool
     */
    public function isCanonical()
    {
        return $this->isCanonical;
    }

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

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

        return $this->isTTY();
    }

    /**
     * @param array $map
     * @return string
     */
    public function getKeyedInput(array $map = [])
    {
        // TODO: Move to class var?
        // TODO: up, down, enter etc in Abstract CONSTs

        if (empty($map)) {
            $map = [
                "\033[A" => 'up',
                "k"      => 'up',
                ""      => 'up', // emacs ^P
                "\033[B" => 'down',
                "j"      => 'down',
                ""      => 'down', //emacs ^N
                "\n"     => 'enter',
                "\r"     => 'enter',
                " "      => 'enter',
                "\177"   => 'backspace'
            ];
        }

        $input = fread(STDIN, 4);
        $this->clearLine();

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

    /**
     * Clear the terminal window
     */
    public function clear()
    {
        echo "\033[2J";
    }

    /**
     * Enable cursor
     */
    public function enableCursor()
    {
        echo "\033[?25h";
    }

    /**
     * Disable cursor
     */
    public function disableCursor()
    {
        echo "\033[?25l";
    }

    /**
     * Move the cursor to the top left of the window
     *
     * @return void
     */
    public function moveCursorToTop()
    {
        echo "\033[H";
    }

    /**
     * Move the cursor to the start of a specific row
     *
     * @param int $rowNumber
     */
    public function moveCursorToRow($rowNumber)
    {
        echo sprintf("\033[%d;0H", $rowNumber);
    }

    /**
     * Move the cursor to the start of a specific column
     *
     * @param int $column
     */
    public function moveCursorToColumn($column)
    {
        echo sprintf("\033[%dC", $column);
    }

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

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


1			<?php
2
3			namespace PhpSchool\CliMenu\Terminal;
4
5			/**
6			* Class UnixTerminal
7			*
8			* @package PhpSchool\CliMenu\Terminal
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			* Initialise the terminal from resource
45			*
46			*/
47			public function __construct()
48			{
49			$this->getOriginalConfiguration();
50			}
51
52			/**
53			* Get the available width of the terminal
54			*
55			* @return int
56			*/
57			public function getWidth()
58			{
59			return $this->width ?: $this->width = (int) exec('tput cols');
60			}
61
62			/**
63			* Get the available height of the terminal
64			*
65			* @return int
66			*/
67			public function getHeight()
68			{
69			return $this->height ?: $this->height = (int) exec('tput lines');
70			}
71
72			/**
73			* Get terminal details
74			*
75			* @return string
76			*/
77			public function getDetails()
78			{
79			if (!$this->details) {
80			$this->details = function_exists('posix_ttyname')
81			? @posix_ttyname(STDOUT)
82			: "Can't retrieve terminal details";
83			}
84
85			return $this->details;
86			}
87
88			/**
89			* Get the original terminal configuration / mode
90			*
91			* @return string
92			*/
93			private function getOriginalConfiguration()
94			{
95			return $this->originalConfiguration ?: $this->originalConfiguration = exec('stty -g');
96			}
97
98			/**
99			* Toggle canonical mode on TTY
100			*
101			* @param bool $useCanonicalMode
102			*/
103			public function setCanonicalMode($useCanonicalMode = true)
104			{
105			if ($useCanonicalMode) {
106			exec('stty -icanon');
107			$this->isCanonical = true;
108			} else {
109			exec('stty ' . $this->getOriginalConfiguration());
110			$this->isCanonical = false;
111			}
112			}
113
114			/**
115			* Check if TTY is in canonical mode
116			* Assumes the terminal was never in canonical mode
117			*
118			* @return bool
119			*/
120			public function isCanonical()
121			{
122			return $this->isCanonical;
123			}
124
125			/**
126			* Test whether terminal is valid TTY
127			*
128			* @return bool
129			*/
130			public function isTTY()
131			{
132			return $this->isTTY ?: $this->isTTY = function_exists('posix_isatty') && @posix_isatty(STDOUT);
133			}
134
135			/**
136			* Test whether terminal supports colour output
137			*
138			* @return bool
139			*
140			* @link https://github.com/symfony/Console/blob/master/Output/StreamOutput.php#L95-L102
141			*/
142			public function supportsColour()
143			{
144			if (DIRECTORY_SEPARATOR === '\\') {
145			return false !== getenv('ANSICON') \|\| 'ON' === getenv('ConEmuANSI') \|\| 'xterm' === getenv('TERM');
146			}
147
148			return $this->isTTY();
149			}
150
151			/**
152			* @param array $map
153			* @return string
154			*/
155			public function getKeyedInput(array $map = [])
156			{
157			// TODO: Move to class var?
158			// TODO: up, down, enter etc in Abstract CONSTs
159
160			if (empty($map)) {
161			$map = [
162			"\033[A" => 'up',
163			"k" => 'up',
164			"" => 'up', // emacs ^P
165			"\033[B" => 'down',
166			"j" => 'down',
167			"" => 'down', //emacs ^N
168			"\n" => 'enter',
169			"\r" => 'enter',
170			" " => 'enter',
171			"\177" => 'backspace'
172			];
173			}
174
175			$input = fread(STDIN, 4);
176			$this->clearLine();
177
178			return array_key_exists($input, $map)
179			? $map[$input]
180			: $input;
181			}
182
183			/**
184			* Clear the terminal window
185			*/
186			public function clear()
187			{
188			echo "\033[2J";
189			}
190
191			/**
192			* Enable cursor
193			*/
194			public function enableCursor()
195			{
196			echo "\033[?25h";
197			}
198
199			/**
200			* Disable cursor
201			*/
202			public function disableCursor()
203			{
204			echo "\033[?25l";
205			}
206
207			/**
208			* Move the cursor to the top left of the window
209			*
210			* @return void
211			*/
212			public function moveCursorToTop()
213			{
214			echo "\033[H";
215			}
216
217			/**
218			* Move the cursor to the start of a specific row
219			*
220			* @param int $rowNumber
221			*/
222			public function moveCursorToRow($rowNumber)
223			{
224			echo sprintf("\033[%d;0H", $rowNumber);
225			}
226
227			/**
228			* Move the cursor to the start of a specific column
229			*
230			* @param int $column
231			*/
232			public function moveCursorToColumn($column)
233			{
234			echo sprintf("\033[%dC", $column);
235			}
236
237			/**
238			* Clear the current cursors line
239			*
240			* @return void
241			*/
242			public function clearLine()
243			{
244			echo sprintf("\033[%dD\033[K", $this->getWidth());
245			}
246
247			/**
248			* Clean the whole console without jumping the window
249			*/
250			public function clean()
251			{
252			foreach (range(0, $this->getHeight()) as $rowNum) {
253			$this->moveCursorToRow($rowNum);
254			$this->clearLine();
255			}
256			}
257			}
258

php-school / cli-menu

Pull Request — master (#78)

UnixTerminal::getHeight() A

Complexity

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Duplication

Importance

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