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-rw-r--r--framework/Log/EventLog/map.php386
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diff --git a/framework/Log/EventLog/map.php b/framework/Log/EventLog/map.php
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-<?php
-/**
- * File containing the ezcLogMap class.
- *
- * @package EventLog
- * @version //autogentag//
- * @copyright Copyright (C) 2005, 2006 eZ systems as. All rights reserved.
- * @license http://ez.no/licenses/new_bsd New BSD License
- * @access private
- */
-
-/**
- * Fast mapping of a mixed variable to an eventType, eventSource and eventCategory.
- *
- * This class is used in ezcLog to map writers to the log messages they
- * are supposed to write. It is important that the get() method is extremely
- * fast since it will be called for each log message.
- *
- * If every combination of eventTypes, eventSources, and eventCategories are
- * combined (product) and placed in one hash-table. The table grows too fast.
- * Imagine: 7 types * 10 sources * 10 categories = 700 entries in the hash.
- *
- * Our solution:
- * Most probably the amount of writers will be limited. So every writer
- * (result) is one bit (of an integer).
- *
- * The hashes: Type, Source, and Category map the input strings to an integer.
- * These integers are AND with each other, and the result is again stored in a
- * hash.
- *
- *
- * @package EventLog
- * @version //autogentag//
- * @access private
- */
-class ezcLogMap
-{
- /**
- * Hashtable that binds a single eventType to a bitmask. The possible
- * key-values are: 1, 2, 4, 8, ...
- *
- * @var array(integer=>bitmask)
- */
- protected $structure;
-
-
- public function __construct()
- {
- $this->result = array();
- }
-
- /**
- * Map the object $object to the given $eventTypeMask, $eventSources and $eventCategories.
- *
- * Example:
- * <code>
- * [ eventType x eventSource x eventCategory ] |-> [ object ]
- * </code>
- *
- * @param int $eventTypeMask
- * @param array(string) $eventSources
- * @param array(string) $eventCategories
- * @param object $object
- *
- * @return void
- */
- public function map( $eventTypeMask, $eventSources, $eventCategories, $object )
- {
- $eventTypes = $this->getMaskArray( $eventTypeMask );
- $result = array( $object );
-
- if ( count( $eventTypes ) == 0 )
- {
- $eventTypes = array( "*" );
- }
- if ( count( $eventSources ) == 0 )
- {
- $eventSources = array( "*" );
- }
- if ( count( $eventCategories ) == 0)
- {
- $eventCategories = array( "*" );
- }
- $c = $this->createMinimumHash( $eventCategories, $result );
- $s = $this->createMinimumHash( $eventSources, $c );
- $new = $this->createMinimumHash( $eventTypes, $s );
-
- $this->mergeHash( $new, $this->structure, $history );
- }
-
- /**
- * Unmap the object $object to the given $eventTypeMask, $eventSources and $eventCategories.
- *
- * @param int $eventTypeMask
- * @param array(string) $eventSources
- * @param array(string) $eventCategories
- * @param object $object
- *
- * @return void
- */
- public function unmap( $eventTypeMask, $eventSources, $eventCategories, $object)
- {
- $eventTypes = $this->getMaskArray( $eventTypeMask );
-
- $result = array( $object );
-
- if ( count( $eventTypes ) == 0 )
- {
- $eventTypes = array( "*" );
- }
- if ( count( $eventSources ) == 0 )
- {
- $eventSources = array( "*" );
- }
- if ( count( $eventCategories ) == 0)
- {
- $eventCategories = array( "*" );
- }
-
- $c = $this->createMinimumHash( $eventCategories, $result );
- $s = $this->createMinimumHash( $eventSources, $c );
- $new = $this->createMinimumHash( $eventTypes, $s );
-
- $this->unmergeHash( $this->structure, $new, $history );
- }
-
-
- /**
- * Fills the array $out with the keys $inKeys and the value $inValue.
- *
- * @param array inKeys
- * @param mixed $inValue
- * @param array &$out
- * @return array
- */
- protected function createMinimumHash($inKeys, $inValue )
- {
- foreach ( $inKeys as $key )
- {
- $out[$key] = $inValue;
- }
- return $out;
- }
-
- /**
- *
- *
- * @return void
- **/
- protected function mergeSingle( &$in, &$history )
- {
- $extra = $this->get( $history[0], $history[1], $history[2] );
- $extra = array_merge( $in, $extra );
-
- $tmp =& $this->structure[$history[0]];
- $tmp =& $tmp[$history[1]];
- $tmp =& $tmp[$history[2]];
-
- foreach ( $extra as $inKey => $inVal )
- {
- if ( !isset( $tmp ) || !in_array( $inVal, $tmp ) )
- {
- if ( is_numeric( $inKey ) )
- {
- $tmp[] = $inVal;
- }
- else
- {
- $tmp[$inKey] =& $inVal;
- }
- }
- }
- }
-
-
- // XXX should change out.. the way it is now.
- protected function mergeHash( &$in, $out, &$history )
- {
- $depth = count( $history );
-
- if ( $depth == 3 )
- {
- $this->mergeSingle( $in, $history );
- }
-
- $i = 0;
- foreach ( $in as $inKey => $inVal )
- {
- $history[$depth] = $inKey;
-
- if ( strcmp( $inKey, "*" ) == 0)
- {
- if ( is_array( $out ) )
- {
- foreach ( $out as $outKey => $outVal )
- {
- $history[$depth] = $outKey;
- $this->mergeHash( $in[$inKey], $out[$outKey], $history );
- }
- }
- }
-
- $history[$depth] = $inKey;
- if ( is_array( $inVal ) )
- {
- if ( is_numeric( $inKey ) )
- {
- // FIXME
- $this->mergeHash( $in[$inKey], $out, $history );
- }
- else
- {
- //$this->mergeHash( $in[$inKey], $out[$inKey], $history );
- $this->mergeHash( $in[$inKey], $out, $history );
- }
- }
-
- }
- array_pop( $history );
- }
-
-
- // XXX: ugly, should get a rewrite.
- protected function unmergeHash( &$out, &$in, &$history )
- {
- $depth = count( $history );
-
- if ( $depth == 3 )
- {
- foreach ( $in as $inKey => $inVal )
- {
- if ( !isset( $out ) || in_array( $inVal, $out ) )
- {
- if ( is_array( $out ) )
- {
- foreach ( $out as $outKey => $outVal )
- {
- if ( $outVal === $inVal )
- {
- unset( $out[$outKey] );
- $result = true;
- }
- }
- }
- }
- }
- }
-
- foreach ( $in as $inKey => $inVal )
- {
- $history[$depth] = $inKey;
-
- if ( strcmp( $inKey, "*" ) == 0)
- {
- if ( is_array( $out ) )
- {
- foreach ( $out as $outKey => $outVal )
- {
- $this->unmergeHash( $out[$outKey], $in[$inKey], $history );
- }
- }
- }
-
- if ( is_array( $inVal ) )
- {
- $this->unmergeHash( $out[$inKey], $in[$inKey], $history );
- }
- }
- array_pop( $history );
- }
-
-
- /**
- * Returns the bits set in $mask as separate values in an array.
- *
- * @return array(int)
- */
- protected function getMaskArray( $mask )
- {
- $result = array();
-
- $input = 1;
- while ( $input <= $mask )
- {
- if ( $mask & $input )
- {
- $result[] = $input;
- }
- $input <<= 1;
- }
-
- return $result;
- }
-
- /**
- * Returns an array with objects are mapped to the key generated by $eventType, $eventSource and $eventCategory.
- *
- * The eventType is an integer from in the range: 2^x with x -> N+.
- * (1, 2, 4, 8, 16, ... )
- *
- * @param int $eventType
- * @param string $eventSource
- * @param string $eventCategory
- * @return array(object).
- */
- public function get( $eventType, $eventSource, $eventCategory)
- {
- $tmp = $this->structure;
-
-
- if ( isset( $tmp[$eventType] ) )
- {
- $tmp = $tmp[$eventType];
- }
- else if ( isset( $tmp [ "*" ] ) )
- {
- $tmp = $tmp["*"];
- }
- else
- {
- return array();
- }
-
- if ( isset( $tmp[$eventSource] ) )
- {
- $tmp = $tmp[$eventSource];
- }
- else if ( isset( $tmp [ "*" ] ) )
- {
- $tmp = $tmp["*"];
- }
- else
- {
- return array();
- }
-
- if ( isset( $tmp[$eventCategory] ) )
- {
- $tmp = $tmp[$eventCategory];
- }
- else if ( isset( $tmp [ "*" ] ) )
- {
- $tmp = $tmp["*"];
- }
- else
- {
- return array();
- }
-
- return $tmp;
- }
-
-
- public function printStructure()
- {
- $this->printStructureRecursive( $this->structure, $history = array() );
- }
-
- protected function printStructureRecursive( $structure, &$history )
- {
- $depth = count( $history );
- if ( $depth == 3 )
- {
- $tmp =& $this->structure[$history[0]];
- $tmp =& $tmp[$history[1]];
- $tmp =& $tmp[$history[2]];
-
- if ( isset( $tmp ) )
- {
- foreach ( $tmp as $key => $val )
- {
- echo $history[0] . " " . $history[1] . " " . $history[2] . " [ $key => $val ]\n";
- }
- }
-
- return;
- }
-
- foreach ( $structure as $key => $val )
- {
- $history[$depth] = $key;
- $this->printStructureRecursive( $structure, $history );
- }
- }
-}
-?>
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