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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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 * Assembles the constants declared in a PHP class in
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 * <code>key1=value1(PHP_EOL)key2=value2</code>
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 * format.
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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 ClassConstants extends BaseFilterReader implements ChainableReader
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{
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    private $test = '';
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    /**
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     * Returns the filtered stream.
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     *
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     * @param int $len
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     * @return mixed the filtered stream, or -1 if the end of the resulting stream has been reached.
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     *
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     * @throws IOException if the underlying stream throws an IOException
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     * during reading
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     */
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    public function read($len = null)
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    {
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        $buffer = $this->in->read();
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        if ($buffer === -1) {
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            return -1;
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        }
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        $classes = get_declared_classes();
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        eval($buffer);
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        $newClasses = array_diff(get_declared_classes(), $classes);
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        $sb = '';
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        foreach ($newClasses as $name) {
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            $clazz = new ReflectionClass($name);
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            foreach ($clazz->getConstants() as $key => $value) {
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                $sb .= $key . '=' . $value . PHP_EOL;
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            }
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        }
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        return $sb;
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    }
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    /**
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     * Creates a new ExpandProperties filter using the passed in
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     * Reader for instantiation.
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     *
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     * @param Reader $reader A 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 ExpandProperties 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 $reader): Reader
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    {
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        return new self($reader);
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    }
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}

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