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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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 * Dummy class for reading from string of characters.
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 *
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 * @package phing.system.io
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 */
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class StringReader extends InputStreamReader
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{
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    /**
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     * @var string
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     */
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    private $string;
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    /**
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     * @var int
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     */
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    private $mark = 0;
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    /**
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     * @var int
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     */
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    private $currPos = 0;
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    /**
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     * @param $string
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     */
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    public function __construct($string)
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    {
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        $this->string = $string;
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    }
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    /**
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     * @param int $n
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     */
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    public function skip($n)
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    {
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    }
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    /**
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     * @param null $len
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     * @return int|string
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     */
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    public function read($len = null)
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    {
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        if ($len === null) {
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            return $this->string;
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        }
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        if ($this->currPos >= strlen($this->string)) {
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            return -1;
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        }
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        $out = substr($this->string, $this->currPos, $len);
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        $this->currPos += $len;
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        return $out;
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    }
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    public function mark()
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    {
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        $this->mark = $this->currPos;
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    }
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    public function reset()
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    {
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        $this->currPos = $this->mark;
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    }
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    public function close()
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    {
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    }
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    public function open()
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    {
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    }
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    public function ready()
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    {
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    }
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    /**
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     * @return bool
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     */
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    public function markSupported()
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    {
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        return true;
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    }
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    /**
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     * @return string
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     */
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    public function getResource()
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    {
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        return '(string) "' . $this->string . '"';
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    }
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}

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