| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* This file contains some core functions extending php. |
| 5 |
* |
| 6 |
* @author Andreas Motl <andreas.motl@ilo.de> |
| 7 |
* @package org.netfrag.glib |
| 8 |
* @name php |
| 9 |
* |
| 10 |
*/ |
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|
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/** |
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* $Id: php_extensions.php,v 1.2 2003/03/05 11:58:49 joko Exp $ |
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* |
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* $Log: php_extensions.php,v $ |
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* Revision 1.2 2003/03/05 11:58:49 joko |
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* modified is_hash, mkInstance and others |
| 18 |
* |
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* Revision 1.1 2003/03/03 21:08:21 joko |
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* refactored from flib/utils |
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* |
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* |
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*/ |
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|
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|
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/** |
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* --- shortcut functions |
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* Is there a mechanism in php to 'export' these methods |
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* to the global symbol table automagically? |
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* We wouldn't require declaring these shortcuts below and |
| 31 |
* could also do some nice stuff at runtime. |
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* (maybe resembling CPAN's Exporter) |
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* |
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* Okay, 'eval' and 'create_function' are alternatives, but i'm |
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* still looking for something that would let us manipulate the |
| 36 |
* symbol table.... (would also be a nice-to-have feature for |
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* mungling "other" symbol table entries, like variables |
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* and/or object references etc.) |
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* |
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* TODO: $php::EXPORT_OK = array('Dumper', 'session_register_safe', 'mkObject', 'is_hash', 'merge_to'); |
| 41 |
* |
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*/ |
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// this is (and will probably always be) required by the "Exporter" |
| 44 |
function &Dumper() { |
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$args = func_get_args(); |
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// shrink array to single item? |
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//if (sizeof($args) == 1) { $args = $args[0]; } |
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php::array_shrink($args); |
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return php::Dumper($args); |
| 50 |
} |
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|
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// these could be refactore using Exporter proposal below, |
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// which just does this code at runtime via eval |
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//function &session_register_safe() { return php::session_register_safe(func_get_args()); } |
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//function &is_hash() { return php::is_hash(func_get_args()); } |
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//function &loadModule() { return php::loadModule(func_get_args()); } |
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//function &mkObject() { return php::mkInstance(func_get_args()); } |
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|
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|
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//exit; |
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|
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// yes! |
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php::export_symbols(); |
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|
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|
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|
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/** |
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* --- php extension functions lying in the php:: namespace |
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* |
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* <pre> |
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* x php::Dumper |
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* x php::session_register_safe |
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* x php::array_init |
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* x php::is_hash |
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* x php::array_join_merge |
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* o php::merge |
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* o php::merge_to |
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* x php::loadModule |
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* x php::mkInstance |
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* </pre> |
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* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @copyright (c) 2003 - All Rights reserved. |
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* @license GNU LGPL (GNU Lesser General Public License) |
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* |
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* @link http://www.netfrag.org/~joko/ |
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* @link http://www.gnu.org/licenses/lgpl.txt |
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* |
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* @package org.netfrag.glib |
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* @name php |
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* |
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* @todo |
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* <pre> |
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* Todo: |
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* |
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* o establish mkInstance here (move from DesignPattern::Object::mkObject) |
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* o establish loadModule here (move from DesignPattern::Object::loadModule) |
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* |
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* Ideas: |
| 100 |
* o php::create_redirector_function('func', array( type => 'lamba|function|method', name => 'Abc::do_xyz') ) |
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* o php::create_redirector_method('class|obj_ref', 'method', $target) |
| 102 |
* o php::export_symbol(from, to) (maybe solves above two) |
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* </pre> |
| 104 |
* |
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*/ |
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class php { |
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|
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|
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// Exporter proposal |
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|
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// does (e.g.) Exporter::export_symbol('php', 'loadModule', array( php_function => 'loadModule' )); |
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// (or) Exporter::export_symbol('php', 'mkInstance', array( php_function => 'mkObject' )); |
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// -> just all from EXPORT_OK |
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|
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function export_symbols() { |
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|
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$symbols = func_get_args(); |
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php::array_shrink($symbols); |
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|
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global $PHP_EXTENSIONS_EXPORT; |
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//print Dumper($PHP_EXTENSIONS_EXPORT); |
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//exit; |
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|
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if (is_array($PHP_EXTENSIONS_EXPORT)) { |
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//if (defined('EXPORT_OK')) { |
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//print EXPORT_OK . "<br/>"; |
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//$symbols = split(' ', EXPORT_OK); |
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//foreach ($php->EXPORT_OK as $symbol) { |
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/* |
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foreach (EXPORT_OK as $symbol) { |
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print "exporting: $symbol<br/>"; |
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Exporter::export_symbol('php', $symbol, array( php_function => $symbol )); |
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} |
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*/ |
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|
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$symbols = php::array_join_merge($PHP_EXTENSIONS_EXPORT, $symbols); |
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|
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php::loadModule('Exporter'); |
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if (class_exists('Exporter')) { |
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Exporter::export_symbols('php', $symbols); |
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} |
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|
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} |
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|
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} |
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|
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function Dumper() { |
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$arg_list = func_get_args(); |
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$count = 1; |
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|
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// build dump by catching output of php's 'print_r' |
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// using php's output buffering functions |
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ob_start(); |
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foreach ($arg_list as $arg) { |
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print_r($arg); |
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if (is_string($arg)) { |
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print "\n"; |
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} |
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$count++; |
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} |
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$var_dump = ob_get_contents(); |
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ob_end_clean(); |
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|
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//print "mode: " . $this->Dumper_mode . "<br/>"; |
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//if ($this->Dumper_mode == HTML) { |
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$var_dump = str_replace("\n", '<br/>', $var_dump); |
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$var_dump = str_replace(" ", ' ', $var_dump); |
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//} |
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|
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//if (sizeof($args) == 1) { $var_dump .= '<br/>'; } |
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|
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return $var_dump; |
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} |
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|
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function session_register_safe($varname) { |
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if (!session_is_registered($varname)) { |
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session_register($varname); |
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return 1; |
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} |
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} |
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|
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// ------------------------------------------------- |
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// array initializer |
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// initializes passed variable (taken by reference) with an empty array |
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// does this only if it doesn't exist yet or initialization is explicitely requested ($clear = 1) |
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function array_init(&$var, $clear = 0) { |
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if (!is_array($var) || $clear) { $var = array(); } |
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} |
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|
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// from: php.net - http://www.php.net/manual/en/function.array-merge-recursive.php |
| 191 |
function is_hash( $var = null ) { |
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if( is_array( $var ) ) { |
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$keys = array_keys( $var ); |
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$all_num = true; |
| 195 |
for( $i=0; $i<count($keys); $i++ ) |
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if( is_string($keys[$i] ) ) return true; |
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} |
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return false; |
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} |
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|
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// from: php.net - http://www.php.net/manual/en/function.array-merge-recursive.php |
| 202 |
function array_join_merge( $arr1, $arr2 ) { |
| 203 |
if( is_array( $arr1 ) and is_array( $arr2 ) ) { |
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// the same -> merge |
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$new_array = array(); |
| 206 |
|
| 207 |
if( php::is_hash( $arr1 ) and php::is_hash( $arr2 ) ) { |
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// hashes -> merge based on keys |
| 209 |
$keys = array_merge( array_keys( $arr1 ), array_keys( $arr2 ) ); |
| 210 |
foreach( $keys as $key ) { |
| 211 |
$new_array[$key] = php::array_join_merge( $arr1[$key], $arr2[$key] ); |
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} |
| 213 |
} else { |
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// two real arrays -> merge |
| 215 |
$new_array = |
| 216 |
array_reverse(array_unique(array_reverse(array_merge($arr1,$arr2)))); |
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} |
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|
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return $new_array; |
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} else { |
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// not the same ... take new one if defined, else the old one stays |
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return $arr2 ? $arr2 : $arr1; |
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} |
| 224 |
} |
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|
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|
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// TODO: |
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// o refactor to the php:: namespace? |
| 229 |
// o PEAR::??? |
| 230 |
// x rename mkObject to mkInstance |
| 231 |
// x rename loadModule? let it like is.... (suggestions? loadPackage?) |
| 232 |
// o enhance loadModule: make it possible to load packages from anywhere?! #?)&%$ |
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|
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function namespace2filename($nsName) { |
| 235 |
if ($filename = str_replace('::', '/', $nsName)) { |
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return $filename; |
| 237 |
} |
| 238 |
} |
| 239 |
|
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function loadModule($namespacedClassname, $options = null) { |
| 241 |
|
| 242 |
if (DEBUG_PHP_EXTENSIONS == 1) { |
| 243 |
print "php::loadModule: " . Dumper($namespacedClassname); |
| 244 |
} |
| 245 |
if (LOG_PHP_EXTENSIONS == 1) { |
| 246 |
php::append_log( "php::loadModule( $namespacedClassname )" ); |
| 247 |
} |
| 248 |
|
| 249 |
if ($filename = php::namespace2filename($namespacedClassname)) { |
| 250 |
|
| 251 |
if (is_array($options)) { |
| 252 |
$extension = $options[extension]; |
| 253 |
} elseif ($options) { |
| 254 |
$extension = $options; |
| 255 |
} else { |
| 256 |
$extension = 'php'; |
| 257 |
} |
| 258 |
|
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$filename .= ".$extension"; |
| 260 |
|
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// V1: just require |
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//require_once($filename); |
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|
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// V2: check file for existance (didn't work!!! problem with path-style conversion regarding platform running on?) |
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/* |
| 266 |
if (file_exists($filename)) { |
| 267 |
require_once($filename); |
| 268 |
} else { |
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//user_error("Could not load module '$namespacedClassname', file '$filename' does not exist."); |
| 270 |
} |
| 271 |
*/ |
| 272 |
|
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// V3: wrapped through eval (weird) |
| 274 |
/* |
| 275 |
$evalstring = "return include_once('$filename');"; |
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$result = eval($evalstring); |
| 277 |
if (!$result) { |
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user_error("DesignPattern::Object: Could not load module '$namespacedClassname', file '$filename' does not exist."); |
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return; |
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} |
| 281 |
*/ |
| 282 |
|
| 283 |
// V4: just include |
| 284 |
//define ("WARNING", E_USER_NOTICE); |
| 285 |
//error_reporting(E_USER_WARNING); |
| 286 |
//error_reporting(E_ALL); |
| 287 |
//error_reporting(E_CORE_ERROR); |
| 288 |
//set_error_handler(array('php::error_handler_2')); |
| 289 |
|
| 290 |
//set_error_handler('php_error_handler'); |
| 291 |
// TODO: do stack-backtracing here to determine function called two or three levels before!!! |
| 292 |
//print "file: $filename<br/>"; |
| 293 |
if (!include_once($filename)) { |
| 294 |
$msg = "php::loadModule error: Could not load module '$namespacedClassname', file '$filename' does not exist."; |
| 295 |
user_error($msg); |
| 296 |
php::append_log($msg, PEAR_LOG_ERR); |
| 297 |
//trigger_error($msg); |
| 298 |
//print "msg: $msg<br/>"; |
| 299 |
return; |
| 300 |
} |
| 301 |
//restore_error_handler(); |
| 302 |
|
| 303 |
//exit; |
| 304 |
|
| 305 |
return 1; |
| 306 |
} |
| 307 |
} |
| 308 |
|
| 309 |
|
| 310 |
function &mkComponent() { |
| 311 |
|
| 312 |
// argument handling - perl style |
| 313 |
$arg_list = &func_get_args(); |
| 314 |
|
| 315 |
// trace |
| 316 |
//print "php::mkInstance: " . Dumper($arg_list); |
| 317 |
//exit; |
| 318 |
|
| 319 |
// patch arglist if all arguments are passed in as a single array |
| 320 |
if (sizeof($arg_list) == 1 && is_array($arg_list[0])) { |
| 321 |
$arg_list = &$arg_list[0]; |
| 322 |
} |
| 323 |
|
| 324 |
//print "arg_list: $arg_list<br/>"; |
| 325 |
$namespacedClassname = array_shift($arg_list); |
| 326 |
|
| 327 |
// debug |
| 328 |
if (DEBUG_PHP_EXTENSIONS == 1) { |
| 329 |
print "php::mkComponent: $namespacedClassname<br/>"; |
| 330 |
} |
| 331 |
if (LOG_PHP_EXTENSIONS == 1) { |
| 332 |
php::append_log( "php::mkComponent( $namespacedClassname )" ); |
| 333 |
} |
| 334 |
|
| 335 |
$classname = $namespacedClassname; |
| 336 |
$filename = $namespacedClassname; |
| 337 |
$load_module_options = null; |
| 338 |
|
| 339 |
if (strstr($namespacedClassname, '_')) { |
| 340 |
//print "mkObject: unallowed character in namespaced classname: '_' ($namespacedClassname)<br/>"; |
| 341 |
//return; |
| 342 |
} |
| 343 |
|
| 344 |
if (strstr($namespacedClassname, '.')) { |
| 345 |
//print "mkObject: unallowed character in namespaced classname: '_' ($namespacedClassname)<br/>"; |
| 346 |
//return; |
| 347 |
$parts = split('\.', $namespacedClassname); |
| 348 |
$filename = $parts[0]; |
| 349 |
$extension = $parts[sizeof($parts) - 1]; |
| 350 |
$load_module_options = array( extension => $extension ); |
| 351 |
} |
| 352 |
|
| 353 |
|
| 354 |
// trace |
| 355 |
//print "mkObject: $classname<br>"; |
| 356 |
//print "file: $filename<br>"; |
| 357 |
|
| 358 |
// build native class name from namespaced one |
| 359 |
$classname = str_replace('::', '_', $classname); |
| 360 |
$classname = str_replace('/', '_', $classname); |
| 361 |
|
| 362 |
// load class-file |
| 363 |
if (!class_exists($classname)) { |
| 364 |
php::loadModule($filename, $load_module_options); |
| 365 |
} |
| 366 |
|
| 367 |
// instantiate object |
| 368 |
$attributes = $arg_list; |
| 369 |
// V0: |
| 370 |
//$obj = new $classname($attributes); |
| 371 |
// V1: |
| 372 |
//$obj = new DesignPattern_Bridge($classname, $attributes); |
| 373 |
// V2: |
| 374 |
$obj = php::mkInstance($classname, $attributes); |
| 375 |
|
| 376 |
// constructor autocall - if possible |
| 377 |
// FIXME: take care for side-effects!!! |
| 378 |
/* |
| 379 |
if (method_exists($obj, 'constructor')) { |
| 380 |
$obj->constructor(); |
| 381 |
} |
| 382 |
*/ |
| 383 |
|
| 384 |
// return instance |
| 385 |
return $obj; |
| 386 |
|
| 387 |
} |
| 388 |
|
| 389 |
// from: http://www.php.net/manual/en/function.method-exists.php |
| 390 |
function class_has_method($className, $methodName) { |
| 391 |
$bool_exists = (in_array(strtolower($methodName), get_class_methods($className))); |
| 392 |
return $bool_exists; |
| 393 |
} |
| 394 |
|
| 395 |
// down: array( item ) => item |
| 396 |
function &array_shrink(&$array) { |
| 397 |
// shrink array to single item? yes! |
| 398 |
if (is_array($array) && !php::is_hash($array) && (sizeof($array) == 1)) { $array = $array[0]; } |
| 399 |
return $array; |
| 400 |
} |
| 401 |
|
| 402 |
function append_log($message, $level = PEAR_LOG_DEBUG) { |
| 403 |
static $Class_Logger_loaded; |
| 404 |
static $Class_Logger_instance; |
| 405 |
if (!$Class_Logger_loaded) { |
| 406 |
$Class_Logger_loaded++; |
| 407 |
//print "LOAD<br/>"; |
| 408 |
php::loadModule('Class::Logger'); |
| 409 |
} |
| 410 |
if (class_exists('Class_Logger')) { |
| 411 |
//$Class_Logger_instance = new Class_Logger(); |
| 412 |
$Class_Logger_instance = php::mkComponent('Class::Logger'); |
| 413 |
//print "YAI<br/>"; |
| 414 |
//Class_Logger::log($message); |
| 415 |
$Class_Logger_instance->log($message, $level); |
| 416 |
} else { |
| 417 |
// FIXME! pre-logger log-messages (two or three): |
| 418 |
// [PEAR_LOG_DEBUG] php::loadModule( Class::Logger ) |
| 419 |
// [PEAR_LOG_DEBUG] php::loadModule( DesignPattern::AbstractClass ) |
| 420 |
//print "[$level] $message" . "<br/>"; |
| 421 |
} |
| 422 |
} |
| 423 |
|
| 424 |
function &mkInstance($classname, $attributes = array()) { |
| 425 |
|
| 426 |
$oo = is_object($this); |
| 427 |
|
| 428 |
// autocall constructor? |
| 429 |
if ($oo) { |
| 430 |
//print Dumper($this); |
| 431 |
//exit; |
| 432 |
//print "this: $this<br/>"; |
| 433 |
//print "parent: $parent<br/>"; |
| 434 |
// V1: |
| 435 |
//parent::constructor(); |
| 436 |
// V2: |
| 437 |
//call_user_func('parent::constructor'); |
| 438 |
// V3: |
| 439 |
//call_user_func(array($this, 'constructor')); |
| 440 |
if (method_exists($this, 'constructor')) { |
| 441 |
//print "YAI<br/>"; |
| 442 |
//call_user_func(array($this, 'constructor')); |
| 443 |
} |
| 444 |
} |
| 445 |
|
| 446 |
if ($oo) { |
| 447 |
//$this->log( get_class($this) . "->mkInstance( classname $classname )" ); |
| 448 |
//Class_Logger::log( get_class($this) . "->mkInstance( classname $classname )" ); |
| 449 |
} else { |
| 450 |
//php::append_log( "php::mkInstance( classname $classname )" ); |
| 451 |
} |
| 452 |
|
| 453 |
if (isset($attributes)) { |
| 454 |
//print Dumper($attributes); |
| 455 |
|
| 456 |
/* |
| 457 |
// pass single argument 1:1 |
| 458 |
if (count($attributes) == 1) { |
| 459 |
$attributes_merged = $attributes[0]; |
| 460 |
|
| 461 |
|
| 462 |
|
| 463 |
// pass hash 1:1 |
| 464 |
} elseif (is_hash($attributes)) { |
| 465 |
$attributes_merged = $attributes; |
| 466 |
|
| 467 |
} else { |
| 468 |
$attributes_merged = $attributes; |
| 469 |
} |
| 470 |
*/ |
| 471 |
|
| 472 |
$args_pass = array(); |
| 473 |
for ($i=0; $i<=count($attributes); $i++) { |
| 474 |
array_push($args_pass, '&$attributes[' . $i . ']'); |
| 475 |
} |
| 476 |
|
| 477 |
$arg_string = join(', ', $args_pass); |
| 478 |
|
| 479 |
/* |
| 480 |
// merge entries of numerical indexed arrays together into one hash |
| 481 |
} else { |
| 482 |
$attributes_merged = array(); |
| 483 |
foreach ($attributes as $entry) { |
| 484 |
$attributes_merged = array_merge($attributes_merged, $entry); |
| 485 |
} |
| 486 |
} |
| 487 |
*/ |
| 488 |
|
| 489 |
if (!class_exists($classname)) { |
| 490 |
user_error("Class '$classname' doesn't exist."); |
| 491 |
return; |
| 492 |
} |
| 493 |
|
| 494 |
//print Dumper($attributes_merged); |
| 495 |
//print Dumper($attributes); |
| 496 |
//$instance = new $classname($attributes_merged); |
| 497 |
//$instance = new $classname($attributes[0]); |
| 498 |
$evalstr = 'return new $classname(' . $arg_string . ');'; |
| 499 |
|
| 500 |
//print "eval: $evalstr<br/>"; |
| 501 |
|
| 502 |
$instance = eval($evalstr); |
| 503 |
//print $evalstr . "<br>"; |
| 504 |
} else { |
| 505 |
$instance = new $classname; |
| 506 |
} |
| 507 |
//$this->log("ok"); |
| 508 |
return $instance; |
| 509 |
} |
| 510 |
|
| 511 |
// up: string -> array |
| 512 |
function array_cast_safe(&$array_or_not) { |
| 513 |
if (!is_array($array_or_not)) { |
| 514 |
$array_or_not = array($array_or_not); |
| 515 |
//print Dumper($array_or_not); |
| 516 |
//exit; |
| 517 |
} |
| 518 |
} |
| 519 |
|
| 520 |
// To return all ancestors class of an object |
| 521 |
// from: http://www.php.net/manual/en/function.get-parent-class.php |
| 522 |
function get_ancestors_class($classname) { |
| 523 |
$father = get_parent_class($classname); |
| 524 |
if ($father != "") { |
| 525 |
$ancestors = php::get_ancestors_class($father); |
| 526 |
$ancestors[] = $father; |
| 527 |
} |
| 528 |
return $ancestors; |
| 529 |
} |
| 530 |
|
| 531 |
// ------ override/expand php's 'include_path' setting ------ |
| 532 |
function add_libpath($paths) { |
| 533 |
|
| 534 |
if (!is_array($paths)) { |
| 535 |
$paths = array($paths); |
| 536 |
} |
| 537 |
array_push($paths, ini_get("include_path")); |
| 538 |
|
| 539 |
// determine OS |
| 540 |
$os = 'linux'; |
| 541 |
if (stristr($_SERVER["SERVER_SOFTWARE"], 'win32')) { |
| 542 |
$os = 'windows'; |
| 543 |
} |
| 544 |
|
| 545 |
$path_delimiter = ':'; |
| 546 |
// change path-delimiter for win32 |
| 547 |
if ($os == 'windows') { $path_delimiter = ';'; } |
| 548 |
// build new 'include_path'-string |
| 549 |
$path_new = join($path_delimiter, $paths); |
| 550 |
ini_set("include_path", $path_new); |
| 551 |
} |
| 552 |
|
| 553 |
// from: http://www.php.net/manual/en/function.is-subclass-of.php |
| 554 |
function is_subclass($child, $parent) { |
| 555 |
if (is_string($child)) { |
| 556 |
do { |
| 557 |
$child = get_parent_class($child); |
| 558 |
if (!$child) return false; |
| 559 |
//} while ($child == $parent); |
| 560 |
} while ($child != $parent); |
| 561 |
return true; |
| 562 |
} else { |
| 563 |
return is_subclass_of($child, $parent); |
| 564 |
} |
| 565 |
} |
| 566 |
|
| 567 |
|
| 568 |
} |
| 569 |
|
| 570 |
//function error_handler($errno, $errstr, $errfile, $errline) { |
| 571 |
function php_error_handler() { |
| 572 |
//print "ERROR!<br/>"; |
| 573 |
$error_raw = func_get_args(); |
| 574 |
|
| 575 |
//print Dumper($error_raw); |
| 576 |
|
| 577 |
$error = array( |
| 578 |
'level' => $error_raw[0], |
| 579 |
'message' => $error_raw[1], |
| 580 |
'file' => $error_raw[2], |
| 581 |
'line' => $error_raw[3], |
| 582 |
'context' => &$error_raw[4], |
| 583 |
'object_context' => &$error_raw[4][this], |
| 584 |
); |
| 585 |
$error[component] = $error[object_context]->_component_name; |
| 586 |
|
| 587 |
//$output_order = array( 'message', 'component', 'file', 'line', 'level' ); |
| 588 |
$output_order = array( 'message', 'file', 'line' ); |
| 589 |
|
| 590 |
/* |
| 591 |
$level = $error[0]; |
| 592 |
$context = &$error[4]; |
| 593 |
$cc = &$context['this']; |
| 594 |
*/ |
| 595 |
|
| 596 |
|
| 597 |
//print Dumper($context); |
| 598 |
//print Dumper($cc); |
| 599 |
//print Dumper($cc->_component_name); |
| 600 |
|
| 601 |
// by level |
| 602 |
//$do_trace = ($level <= 5); |
| 603 |
|
| 604 |
//$c_name = $context['this']['_component_name']; |
| 605 |
|
| 606 |
//print "c_error: $c_name<br/>"; |
| 607 |
|
| 608 |
// if component |
| 609 |
//$do_trace = isset($context[this][_component_name]); |
| 610 |
//$do_trace = isset($context->this[_component_name]); |
| 611 |
//$do_trace = isset($cc->_component_name); |
| 612 |
$do_trace = isset($error[component]); |
| 613 |
|
| 614 |
//$do_trace = 1; |
| 615 |
|
| 616 |
//print Dumper($context); |
| 617 |
|
| 618 |
if ($do_trace) { |
| 619 |
|
| 620 |
//print php::Dumper($error); |
| 621 |
//exit; |
| 622 |
|
| 623 |
//print "<hr/><b><font color=\"red\">ERROR:</font></b><br/>"; |
| 624 |
print "<b><font color=\"red\">ERROR:</font></b><br/> "; |
| 625 |
|
| 626 |
foreach ($output_order as $key) { |
| 627 |
print "<b>$key:</b> $error[$key]<br/>"; |
| 628 |
} |
| 629 |
|
| 630 |
} |
| 631 |
|
| 632 |
} |
| 633 |
|
| 634 |
|
| 635 |
?> |
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