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<?php
namespace WyriHaximus\TwigView\Lib;
/**
* Class TreeScanner
* @package WyriHaximus\TwigView\Lib
*/
class TreeScanner
{
/**
* Return all sections (app & plugins) with an Template directory.
*
* @return array
*/
public static function all()
{
return static::deepen(RelativeScanner::all());
}
/**
* Return all templates for a given plugin.
*
* @param string $plugin The plugin to find all templates for.
*
* @return mixed
*/
public static function plugin($plugin)
{
return static::deepen([
$plugin => RelativeScanner::plugin($plugin),
])[$plugin];
}
/**
* Strip the absolute path of template's paths for all given sections.
*
* @param string $sections Sections to iterate over.
*
* @return array
*/
protected static function deepen($sections)
{
foreach ($sections as $section => $paths) {
$sections[$section] = static::convertToTree($paths);
}
return $sections;
}
/**
* Turn a set of paths into a tree.
*
* @param array $paths Paths to turn into a tree.
*
* @return array
*/
protected static function convertToTree(array $paths)
{
foreach ($paths as $index => $path) {
static::convertPathToTree($paths, $index, $path);
}
return $paths;
}
/**
* Convert a path into a tree when it contains a directory separator.
*
* @param array $paths The paths to work on.
* @param mixed $index Index of $path.
* @param string $path Path to breakup and turn into a tree.
*
* @return void
*/
protected static function convertPathToTree(array &$paths, $index, $path)
{
if (strpos($path, DIRECTORY_SEPARATOR) !== false) {
$chunks = explode(DIRECTORY_SEPARATOR, $path);
$paths = static::branch($paths, $chunks);
unset($paths[$index]);
}
}
/**
* Create a branch for the current level and push a twig on it.
*
* @param array $paths Paths to append.
* @param array $branches Branches to use untill only one left.
*
* @return array
*/
protected static function branch(array $paths, array $branches)
{
$twig = array_shift($branches);
if (count($branches) == 0) {
$paths[] = $twig;
return $paths;
}
if (!isset($paths[$twig])) {
$paths[$twig] = [];
}
$paths[$twig] = static::branch($paths[$twig], $branches);
return $paths;
}
}