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<?php
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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 FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information please see
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* <http://phing.info>.
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*/
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/**
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* Applies a native php function to the original input.
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*
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* Example:
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* <pre><phparraymaplines function="strtoupper"/></pre>
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*
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* Or:
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*
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* <pre><filterreader classname="phing.filters.PhpArrayMapLines">
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* <param name="function" value="strtoupper"/>
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* </filterreader></pre>
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*
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* @author Siad Ardroumli <siad.ardroumli@gmail.com>
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* @package phing.filters
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*/
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class PhpArrayMapLines extends BaseParamFilterReader implements ChainableReader
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{
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/**
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* Parameter name for the function.
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*
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* @var string
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*/
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public const FUNCTION_KEY = "function";
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/**
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* The function to be used.
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*
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* @var string
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*/
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private $function = null;
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/**
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* Applies a native php function to the original input and returns resulting stream.
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*
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* @param int $len
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* @return mixed buffer, -1 on EOF
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*/
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public function read($len = null)
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{
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if (!$this->getInitialized()) {
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$this->initialize();
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$this->checkAttributes();
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$this->setInitialized(true);
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}
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$buffer = $this->in->read($len);
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if ($buffer === -1 || !function_exists($this->function)) {
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return -1;
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}
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$lines = explode("\n", $buffer);
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$filtered = array_map($this->function, $lines);
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$filtered_buffer = implode("\n", $filtered);
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return $filtered_buffer;
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}
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/**
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* Sets the function used by array_map.
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*
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* @param string $function The function used by array_map.
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*/
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public function setFunction($function)
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{
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$this->function = (string) $function;
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}
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/**
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* Returns the prefix which will be added at the start of each input line.
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*
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* @return string The prefix which will be added at the start of each input line
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*/
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public function getFunction()
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{
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return $this->function;
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}
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/**
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* Make sure that required attributes are set.
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*
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* @throws BuildException - if any required attribs aren't set.
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*/
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protected function checkAttributes()
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{
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if (!$this->function) {
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throw new BuildException("You must specify a value for the 'function' attribute.");
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}
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}
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/**
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* Creates a new PhpArrayMapLines filter using the passed in
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* Reader for instantiation.
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*
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* @param Reader $reader Reader object providing the underlying stream.
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* Must not be <code>null</code>.
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*
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* @return PhpArrayMapLines A new filter based on this configuration, but filtering
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* the specified reader
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*/
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public function chain(Reader $reader): Reader
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{
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$newFilter = new PhpArrayMapLines($reader);
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$newFilter->setFunction($this->getFunction());
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$newFilter->setInitialized(true);
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$newFilter->setProject($this->getProject());
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return $newFilter;
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}
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/**
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* Initializes the function if it is available from the parameters.
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*/
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private function initialize()
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{
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$params = $this->getParameters();
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if ($params !== null) {
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for ($i = 0, $_i = count($params); $i < $_i; $i++) {
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if (self::FUNCTION_KEY == $params[$i]->getName()) {
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$this->function = (string) $params[$i]->getValue();
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break;
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}
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}
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}
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}
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}
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siad007