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<?php |
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/** |
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* Fwk |
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* |
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* Copyright (c) 2011-2012, Julien Ballestracci <[email protected]>. |
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* All rights reserved. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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* PHP Version 5.3 |
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* |
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* @category XML |
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* @package Fwk\Xml |
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* @author Julien Ballestracci <[email protected]> |
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* @copyright 2011-2014 Julien Ballestracci <[email protected]> |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://www.nitronet.org/fwk |
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*/ |
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namespace Fwk\Xml; |
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use SimpleXMLElement; |
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/** |
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* XmlFile |
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* |
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* Represents an existing XML file on filesystem. Uses SimpleXML. |
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* |
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* @category Library |
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* @package Fwk\Xml |
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* @author Julien Ballestracci <[email protected]> |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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* @link http://www.nitronet.org/fwk |
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*/ |
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class XmlFile |
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{ |
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/** |
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* Path to XML file |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* Root SimpleXML node |
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* @var SimpleXMLElement |
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*/ |
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protected $xml; |
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/** |
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* Constructor |
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* |
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* @param string $filePath Path to XML file |
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* |
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* @throws \InvalidArgumentException if path links to a directory |
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* @return void |
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*/ |
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public function __construct($filePath) |
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{ |
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if (is_dir($filePath)) { |
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throw new \InvalidArgumentException( |
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sprintf("File %s is a directory", $filePath) |
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); |
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} |
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if (\function_exists('libxml_use_internal_errors')) { |
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\libxml_use_internal_errors(true); |
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} |
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$this->path = $filePath; |
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} |
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/** |
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* Tells if the file exists |
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* |
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* @return boolean |
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*/ |
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public function exists() |
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{ |
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return is_file($this->getRealPath()); |
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} |
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/** |
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* Try to return the real path of the file. If not possible, |
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* returns user-submitted path (@see __construct) |
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* |
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* @return string |
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*/ |
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public function getRealPath() |
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{ |
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$rpt = \realpath($this->path); |
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return ($rpt === false ? $this->path : $rpt); |
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} |
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/** |
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* Tells if the file is readable |
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* |
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* @return boolean |
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*/ |
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public function isReadable() |
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{ |
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return ($this->exists() ? is_readable($this->path) : false); |
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} |
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/** |
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* Opens the XML file (if not already done) and return the SimpleXML root |
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* node. |
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* |
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* @throws Exceptions\FileNotFoundException If file not found/readable |
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* @throws Exceptions\XmlErrorException If XML errors were found (libxml) |
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* @return SimpleXMLElement |
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*/ |
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public function open() |
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{ |
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if (!isset($this->xml)) { |
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if (!$this->isReadable()) { |
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throw new Exceptions\FileNotFoundException( |
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"XML file not found/readable: ". $this->path |
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); |
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} |
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if (!$this->xml = simplexml_load_file($this->getRealPath())) { |
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$error = sprintf( |
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"%s [%s]", |
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libxml_get_last_error()->message, |
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\libxml_get_last_error()->code |
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); |
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throw new Exceptions\XmlErrorException($error); |
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} |
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} |
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return $this->xml; |
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} |
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/** |
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* Returns the contents of the XML file |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->open()->asXML(); |
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} |
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/** |
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* SimpleXML wrapper to access XML nodes the simple way: $file->node->name |
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* |
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* @param string $var XML node name |
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* |
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* @return mixed |
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*/ |
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public function __get($var) |
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{ |
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return $this->open()->{$var}; |
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} |
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/** |
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* SimpleXML wrapper to do a Xpath query on the file. |
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* |
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* @param string $path Path to XML node |
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* |
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* @return mixed |
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*/ |
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public function xpath($path) |
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{ |
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return $this->open()->xpath($path); |
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} |
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} |
Adding a
@return
annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.