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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2018 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()
{
$xdg = new Xdg();
return self::getDirNames([$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() : [$configDir];
return self::getRealFiles($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() : [$dataDir];
return self::getRealFiles($dirs, $names);
}
/**
* Get a runtime directory.
*
* Defaults to `/psysh` inside the system's temp dir.
*
* @return string
*/
public static function getRuntimeDir()
{
$xdg = new Xdg();
\set_error_handler(['Psy\Exception\ErrorException', 'throwException']);
try {
// XDG doesn't really work on Windows, sometimes complains about
// permissions, sometimes tries to remove non-empty directories.
// It's a bit flaky. So we'll give this a shot first...
$runtimeDir = $xdg->getRuntimeDir(false);
} catch (\Exception $e) {
// Well. That didn't work. Fall back to a boring old folder in the
// system temp dir.
$runtimeDir = \sys_get_temp_dir();
}
\restore_error_handler();
return \strtr($runtimeDir, '\\', '/') . '/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)
{
$files = [];
foreach ($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;
}
}