First commit

vendor/symfony/console/Terminal.php

@@ -0,0 +1,137 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console;
+
+class Terminal
+{
+    private static $width;
+    private static $height;
+
+    /**
+     * Gets the terminal width.
+     *
+     * @return int
+     */
+    public function getWidth()
+    {
+        $width = getenv('COLUMNS');
+        if (false !== $width) {
+            return (int) trim($width);
+        }
+
+        if (null === self::$width) {
+            self::initDimensions();
+        }
+
+        return self::$width ?: 80;
+    }
+
+    /**
+     * Gets the terminal height.
+     *
+     * @return int
+     */
+    public function getHeight()
+    {
+        $height = getenv('LINES');
+        if (false !== $height) {
+            return (int) trim($height);
+        }
+
+        if (null === self::$height) {
+            self::initDimensions();
+        }
+
+        return self::$height ?: 50;
+    }
+
+    private static function initDimensions()
+    {
+        if ('\\' === DIRECTORY_SEPARATOR) {
+            if (preg_match('/^(\d+)x(\d+)(?: \((\d+)x(\d+)\))?$/', trim(getenv('ANSICON')), $matches)) {
+                // extract [w, H] from "wxh (WxH)"
+                // or [w, h] from "wxh"
+                self::$width = (int) $matches[1];
+                self::$height = isset($matches[4]) ? (int) $matches[4] : (int) $matches[2];
+            } elseif (null !== $dimensions = self::getConsoleMode()) {
+                // extract [w, h] from "wxh"
+                self::$width = (int) $dimensions[0];
+                self::$height = (int) $dimensions[1];
+            }
+        } elseif ($sttyString = self::getSttyColumns()) {
+            if (preg_match('/rows.(\d+);.columns.(\d+);/i', $sttyString, $matches)) {
+                // extract [w, h] from "rows h; columns w;"
+                self::$width = (int) $matches[2];
+                self::$height = (int) $matches[1];
+            } elseif (preg_match('/;.(\d+).rows;.(\d+).columns/i', $sttyString, $matches)) {
+                // extract [w, h] from "; h rows; w columns"
+                self::$width = (int) $matches[2];
+                self::$height = (int) $matches[1];
+            }
+        }
+    }
+
+    /**
+     * Runs and parses mode CON if it's available, suppressing any error output.
+     *
+     * @return int[]|null An array composed of the width and the height or null if it could not be parsed
+     */
+    private static function getConsoleMode()
+    {
+        if (!function_exists('proc_open')) {
+            return;
+        }
+
+        $descriptorspec = array(
+            1 => array('pipe', 'w'),
+            2 => array('pipe', 'w'),
+        );
+        $process = proc_open('mode CON', $descriptorspec, $pipes, null, null, array('suppress_errors' => true));
+        if (is_resource($process)) {
+            $info = stream_get_contents($pipes[1]);
+            fclose($pipes[1]);
+            fclose($pipes[2]);
+            proc_close($process);
+
+            if (preg_match('/--------+\r?\n.+?(\d+)\r?\n.+?(\d+)\r?\n/', $info, $matches)) {
+                return array((int) $matches[2], (int) $matches[1]);
+            }
+        }
+    }
+
+    /**
+     * Runs and parses stty -a if it's available, suppressing any error output.
+     *
+     * @return string|null
+     */
+    private static function getSttyColumns()
+    {
+        if (!function_exists('proc_open')) {
+            return;
+        }
+
+        $descriptorspec = array(
+            1 => array('pipe', 'w'),
+            2 => array('pipe', 'w'),
+        );
+
+        $process = proc_open('stty -a | grep columns', $descriptorspec, $pipes, null, null, array('suppress_errors' => true));
+        if (is_resource($process)) {
+            $info = stream_get_contents($pipes[1]);
+            fclose($pipes[1]);
+            fclose($pipes[2]);
+            proc_close($process);
+
+            return $info;
+        }
+    }
+}