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website/vendor/psy/psysh/src/Psy/ConfigPaths.php

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+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy;
+
+use XdgBaseDir\Xdg;
+
+/**
+ * A Psy Shell configuration path helper.
+ */
+class ConfigPaths
+{
+    /**
+     * Get potential config directory paths.
+     *
+     * Returns `~/.psysh`, `%APPDATA%/PsySH` (when on Windows), and all
+     * XDG Base Directory config directories:
+     *
+     *     http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
+     *
+     * @return string[]
+     */
+    public static function getConfigDirs()
+    {
+        $xdg = new Xdg();
+
+        return self::getDirNames($xdg->getConfigDirs());
+    }
+
+    /**
+     * Get potential home config directory paths.
+     *
+     * Returns `~/.psysh`, `%APPDATA%/PsySH` (when on Windows), and the
+     * XDG Base Directory home config directory:
+     *
+     *     http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
+     *
+     * @return string[]
+     */
+    public static function getHomeConfigDirs()
+    {
+        $xdg = new Xdg();
+
+        return self::getDirNames(array($xdg->getHomeConfigDir()));
+    }
+
+    /**
+     * Get the current home config directory.
+     *
+     * Returns the highest precedence home config directory which actually
+     * exists. If none of them exists, returns the highest precedence home
+     * config directory (`%APPDATA%/PsySH` on Windows, `~/.config/psysh`
+     * everywhere else).
+     *
+     * @see self::getHomeConfigDirs
+     *
+     * @return string
+     */
+    public static function getCurrentConfigDir()
+    {
+        $configDirs = self::getHomeConfigDirs();
+        foreach ($configDirs as $configDir) {
+            if (@is_dir($configDir)) {
+                return $configDir;
+            }
+        }
+
+        return $configDirs[0];
+    }
+
+    /**
+     * Find real config files in config directories.
+     *
+     * @param string[] $names     Config file names
+     * @param string   $configDir Optionally use a specific config directory
+     *
+     * @return string[]
+     */
+    public static function getConfigFiles(array $names, $configDir = null)
+    {
+        $dirs = ($configDir === null) ? self::getConfigDirs() : array($configDir);
+
+        return self::getRealFiles($dirs, $names);
+    }
+
+    /**
+     * Get potential data directory paths.
+     *
+     * If a `dataDir` option was explicitly set, returns an array containing
+     * just that directory.
+     *
+     * Otherwise, it returns `~/.psysh` and all XDG Base Directory data directories:
+     *
+     *     http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
+     *
+     * @return string[]
+     */
+    public static function getDataDirs()
+    {
+        $xdg = new Xdg();
+
+        return self::getDirNames($xdg->getDataDirs());
+    }
+
+    /**
+     * Find real data files in config directories.
+     *
+     * @param string[] $names   Config file names
+     * @param string   $dataDir Optionally use a specific config directory
+     *
+     * @return string[]
+     */
+    public static function getDataFiles(array $names, $dataDir = null)
+    {
+        $dirs = ($dataDir === null) ? self::getDataDirs() : array($dataDir);
+
+        return self::getRealFiles($dirs, $names);
+    }
+
+    /**
+     * Get a runtime directory.
+     *
+     * Defaults to  `/psysh` inside the system's temp dir.
+     *
+     * @return string
+     */
+    public static function getRuntimeDir()
+    {
+        $xdg = new Xdg();
+
+        return $xdg->getRuntimeDir(false) . '/psysh';
+    }
+
+    private static function getDirNames(array $baseDirs)
+    {
+        $dirs = array_map(function ($dir) {
+            return strtr($dir, '\\', '/') . '/psysh';
+        }, $baseDirs);
+
+        // Add ~/.psysh
+        if ($home = getenv('HOME')) {
+            $dirs[] = strtr($home, '\\', '/') . '/.psysh';
+        }
+
+        // Add some Windows specific ones :)
+        if (defined('PHP_WINDOWS_VERSION_MAJOR')) {
+            if ($appData = getenv('APPDATA')) {
+                // AppData gets preference
+                array_unshift($dirs, strtr($appData, '\\', '/') . '/PsySH');
+            }
+
+            $dir = strtr(getenv('HOMEDRIVE') . '/' . getenv('HOMEPATH'), '\\', '/') . '/.psysh';
+            if (!in_array($dir, $dirs)) {
+                $dirs[] = $dir;
+            }
+        }
+
+        return $dirs;
+    }
+
+    private static function getRealFiles(array $dirNames, array $fileNames)
+    {
+        $files = array();
+        foreach ($dirNames as $dir) {
+            foreach ($fileNames as $name) {
+                $file = $dir . '/' . $name;
+                if (@is_file($file)) {
+                    $files[] = $file;
+                }
+            }
+        }
+
+        return $files;
+    }
+
+    /**
+     * Ensure that $file exists and is writable, make the parent directory if necessary.
+     *
+     * Generates E_USER_NOTICE error if either $file or its directory is not writable.
+     *
+     * @param string $file
+     *
+     * @return string|false Full path to $file, or false if file is not writable
+     */
+    public static function touchFileWithMkdir($file)
+    {
+        if (file_exists($file)) {
+            if (is_writable($file)) {
+                return $file;
+            }
+
+            trigger_error(sprintf('Writing to %s is not allowed.', $file), E_USER_NOTICE);
+
+            return false;
+        }
+
+        $dir = dirname($file);
+
+        if (!is_dir($dir)) {
+            // Just try making it and see if it works
+            @mkdir($dir, 0700, true);
+        }
+
+        if (!is_dir($dir) || !is_writable($dir)) {
+            trigger_error(sprintf('Writing to %s is not allowed.', $dir), E_USER_NOTICE);
+
+            return false;
+        }
+
+        touch($file);
+
+        return $file;
+    }
+}