46 lines
1.4 KiB
PHP
46 lines
1.4 KiB
PHP
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<?php
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class Application_Common_OsPath{
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// this function is from http://stackoverflow.com/questions/2670299/is-there-a-php-equivalent-function-to-the-python-os-path-normpath
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public static function normpath($path)
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{
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if (empty($path))
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return '.';
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if (strpos($path, '/') === 0)
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$initial_slashes = true;
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else
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$initial_slashes = false;
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if (
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($initial_slashes) &&
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(strpos($path, '//') === 0) &&
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(strpos($path, '///') === false)
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)
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$initial_slashes = 2;
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$initial_slashes = (int) $initial_slashes;
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$comps = explode('/', $path);
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$new_comps = array();
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foreach ($comps as $comp)
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{
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if (in_array($comp, array('', '.')))
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continue;
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if (
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($comp != '..') ||
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(!$initial_slashes && !$new_comps) ||
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($new_comps && (end($new_comps) == '..'))
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)
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array_push($new_comps, $comp);
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elseif ($new_comps)
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array_pop($new_comps);
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}
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$comps = $new_comps;
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$path = implode('/', $comps);
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if ($initial_slashes)
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$path = str_repeat('/', $initial_slashes) . $path;
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if ($path)
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return $path;
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else
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return '.';
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}
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}
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