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C:/xampp/php5/PEAR/phing/filters/_[ Writable ]

File:C:/xampp/php5/PEAR/phing/filters/LineContains.php

<?php

/*
 *  $Id: LineContains.php 325 2007-12-20 15:44:58Z hans $
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information please see
 * <http://phing.info>.
 */

include_once 'phing/filters/BaseParamFilterReader.php';
include_once 'phing/filters/BaseFilterReader.php';
include_once 'phing/filters/ChainableReader.php';

/**
 * Filter which includes only those lines that contain all the user-specified
 * strings.
 *
 * Example:
 *
 * <pre><linecontains>
 *   <contains value="foo">
 *   <contains value="bar">
 * </linecontains></pre>
 *
 * Or:
 *
 * <pre><filterreader classname="phing.filters.LineContains">
 *    <param type="contains" value="foo"/>
 *    <param type="contains" value="bar"/>
 * </filterreader></pre>
 *
 * This will include only those lines that contain <code>foo</code> and
 * <code>bar</code>.
 *
 * @author    Yannick Lecaillez <yl@seasonfive.com>
 * @author    Hans Lellelid <hans@velum.net>
 * @version   $Revision: 1.11 $
 * @see       PhingFilterReader
 * @package   phing.filters
*/
class LineContains extends BaseParamFilterReader implements ChainableReader {

    /**
     * The parameter name for the string to match on.
     * @var string
     */ 
    const CONTAINS_KEY = "contains";

    /**
     * Array of Contains objects.
     * @var array
     */ 
    private $_contains = array();

    /**
     * [Deprecated] 
     * @var string
     */ 
    private $_line = null;

    /**
     * Returns all lines in a buffer that contain specified strings.
     * @return mixed buffer, -1 on EOF
     */
    function read($len = null) {
        if ( !$this->getInitialized() ) {
            $this->_initialize();
            $this->setInitialized(true);
        }
        
        $buffer = $this->in->read($len);
        
        if ($buffer === -1) {
            return -1;
        }
        
        $lines = explode("\n", $buffer);        
        $matched = array();        
        $containsSize = count($this->_contains);
        
        foreach($lines as $line) {                                
            for($i = 0 ; $i < $containsSize ; $i++) {
                $containsStr = $this->_contains[$i]->getValue();
                if ( strstr($line, $containsStr) === false ) {
                    $line = null;
                    break;
                }
            }                
            if($line !== null) {
                $matched[] = $line;
            }                
        }        
        $filtered_buffer = implode("\n", $matched);    
        return $filtered_buffer;
    }
    
    /**
     * [Deprecated. For reference only, used to be read() method.] 
     * Returns the next character in the filtered stream, only including
     * lines from the original stream which contain all of the specified words.
     *
     * @return the next character in the resulting stream, or -1
     * if the end of the resulting stream has been reached
     *
     * @exception IOException if the underlying stream throws an IOException
     * during reading
     */
    function readChar() {
        if ( !$this->getInitialized() ) {
            $this->_initialize();
            $this->setInitialized(true);
        }

        $ch = -1;

        if ( $this->_line !== null ) {
            $ch = substr($this->_line, 0, 1);
            if ( strlen($this->_line) === 1 )
                $this->_line = null;
            else
                $this->_line = substr($this->_line, 1);
        } else {
            $this->_line = $this->readLine();
            if ( $this->_line === null ) {
                $ch = -1;
            } else {
                $containsSize = count($this->_contains);
                for($i = 0 ; $i < $containsSize ; $i++) {
                    $containsStr = $this->_contains[$i]->getValue();
                    if ( strstr($this->_line, $containsStr) === false ) {
                        $this->_line = null;
                        break;
                    }
                }
                return $this->readChar();
            }
        }

        return $ch;
    }

    /**
     * Adds a <code><contains></code> nested element.
     *
     * @return Contains The <code>contains</code> element added.
     *                  Must not be <code>null</code>.
     */
    function createContains() {
        $num = array_push($this->_contains, new Contains());
        return $this->_contains[$num-1];
    }

    /**
     * Sets the array of words which must be contained within a line read
     * from the original stream in order for it to match this filter.
     *
     * @param array $contains An array of words which must be contained
     *                 within a line in order for it to match in this filter.
     *                 Must not be <code>null<code>.
     */
    function setContains($contains) {
        // type check, error must never occur, bad code of it does
        if ( !is_array($contains) ) {
            throw new Exception("Excpected array got something else");
        }

        $this->_contains = $contains;
    }

    /**
     * Returns the vector of words which must be contained within a line read
     * from the original stream in order for it to match this filter.
     *
     * @return array The array of words which must be contained within a line read
     *         from the original stream in order for it to match this filter. The
     *         returned object is "live" - in other words, changes made to the
     *         returned object are mirrored in the filter.
     */
    function getContains() {
        return $this->_contains;
    }

    /**
     * Creates a new LineContains using the passed in
     * Reader for instantiation.
     *
     * @param object A Reader object providing the underlying stream.
     *               Must not be <code>null</code>.
     *
     * @return object A new filter based on this configuration, but filtering
     *         the specified reader
     */
    function chain(Reader $reader) {
        $newFilter = new LineContains($reader);
        $newFilter->setContains($this->getContains());
        $newFilter->setInitialized(true);
        $newFilter->setProject($this->getProject());        
        return $newFilter;
    }

    /**
     * Parses the parameters to add user-defined contains strings.
     */
    private function _initialize() {
        $params = $this->getParameters();
        if ( $params !== null ) {
            foreach($params as $param) {
                if ( self::CONTAINS_KEY == $param->getType() ) {
                    $cont = new Contains();
                    $cont->setValue($param->getValue());
                    array_push($this->_contains, $cont);
                    break; // because we only support a single contains
                }
            }
        }
    }
}

/**
 * Holds a contains element.
 */
class Contains {

    /**
     * @var string
     */ 
    private $_value;
    
    /**
     * Set 'contains' value.
     * @param string $contains
     */ 
    function setValue($contains) {
        $this->_value = (string) $contains;
    }
    
    /**
     * Returns 'contains' value.
     * @return string
     */ 
    function getValue() {
        return $this->_value;
    }
}

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