487 lines
11 KiB
PHP
487 lines
11 KiB
PHP
<?php
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# Copyright 2006 James Tauber and contributors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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/**
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* This call makes three things happen:
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*
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* 1) a global error handler for php errors that causes an exception to be
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* thrown instead of standard php error handling.
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*
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* 2) a global exception handler for any exceptions that are somehow not
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* caught by the application code.
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*
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* 3) error_reporting is set to E_STRICT, so that even notices cause an
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* exception to be thrown. This way we are forced to deal with even
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* the minor issues during development, and hopefully fewer issues
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make it out into the world.
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*/
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require_once( dirname(__FILE__) . DIRECTORY_SEPARATOR . 'strict_mode.php' );
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init_strict_mode();
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# iteration from Bob Ippolito's Iteration in JavaScript
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# pyjs_extend from Kevin Lindsey's Inteheritance Tutorial (http://www.kevlindev.com/tutorials/javascript/inheritance/)
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# type functions from Douglas Crockford's Remedial Javascript: http://www.crockford.com/javascript/remedial.html
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function pyjslib_isObject($a) {
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return is_object($a);
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}
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function pyjslib_isFunction($a) {
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return is_function($a);
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}
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function pyjslib_isString($a) {
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return is_string($a);
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}
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function pyjslib_isNull($a) {
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return is_null($a);
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}
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function pyjslib_isArray($a) {
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return is_array($a);
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}
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function pyjslib_isUndefined($a) {
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return !isset($a);
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}
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function pyjslib_isIteratable($a) {
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return $a instanceof Traversable;
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}
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function pyjslib_isNumber($a) {
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return is_numeric($a);
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}
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function pyjslib_int($a) {
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return (int)$a;
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}
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function pyjslib_str($val) {
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return (string)$val;
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}
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function pyjslib_del_slice(&$list, $from, $to, $step=1) {
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if( $from <= 0 ) {
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$from = 0;
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}
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if( $to === null ) {
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$to = count($list);
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}
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if( $step <= 0 ) {
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$step = 1;
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}
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for( $i = $from; $i < $to; $i += $step ) {
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unset( $list[$i]);
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}
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}
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function pyjslib_array_slice($list, $from, $to, $step=1) {
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$newlist = [];
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if( $from <= 0 ) {
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$from = 0;
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}
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if( $to === null ) {
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$to = count($list);
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}
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if( $step <= 0 ) {
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$step = 1;
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}
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for( $i = $from; $i < $to; $i += $step ) {
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$newlist[] = $list[$i];
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}
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return $newlist;
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}
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# taken from mochikit: range( [start,] stop[, step] )
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function pyjslib_range($start, $stop = null, $step = 1) {
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if( $stop === null ) {
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$stop = $start;
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$start = 0;
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}
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if( $stop <= $start && $step < 0 ) {
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$arr = range( $stop, $start, -$step );
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array_pop( $arr );
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return array_reverse( $arr, false );
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}
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$arr = range( $start, $stop, $step );
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array_pop( $arr );
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return $arr;
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}
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function pyjslib_filter($callback, $iterable) {
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$a = [];
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foreach( $iterable as $item ) {
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if( call_user_func( $callback, $item ) ) {
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$a[] = $item;
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}
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}
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return $a;
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}
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function pyjslib_globals() {
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return $GLOBALS;
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}
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function pyjslib_map($callable) {
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$done = false;
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$call_cnt = 0;
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$results = [];
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$params = func_get_args();
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array_shift( $params );
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while( !$done ) {
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$func_args = [];
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$found = false;
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for( $i = 0; $i < count($params); $i ++ ) {
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$func_args[] = @$params[$i][$call_cnt];
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if( count($params[$i]) > $call_cnt + 1 ) {
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$found = true;
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}
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}
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if( !$found ) {
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$done = true;
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}
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$results[] = call_user_func_array($callable, $func_args);
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$call_cnt ++;
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}
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return $results;
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}
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function pyjslib_zip() {
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$params = func_get_args();
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if (count($params) === 1){ // this case could be probably cleaner
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// single iterable passed
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$result = array();
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foreach ($params[0] as $item){
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$result[] = array($item);
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};
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return $result;
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};
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$result = call_user_func_array('array_map',array_merge(array(null),$params));
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$length = min(array_map('count', $params));
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return array_slice($result, 0, $length);
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}
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function pyjslib_is_assoc($arr)
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{
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return array_keys($arr) !== range(0, count($arr) - 1);
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}
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function pyjslib_dict($arg=null) {
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if( $arg === null ) {
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return [];
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}
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if( pyjslib_is_assoc( $arg )) {
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return $arg;
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}
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$dict = [];
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foreach( $arg as $a ) {
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if( count($a) == 2 ) {
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$dict[$a[0]] = $a[1];
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}
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}
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return $dict;
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}
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function pyjslib_printWorker($objs, $nl, $multi_arg, $depth=1) {
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$buf = '';
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if( is_array( $objs ) && $multi_arg && $depth == 1) {
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$cnt = 0;
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foreach( $objs as $obj ) {
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if( $cnt ++ > 0 ) {
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$buf .= " ";
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}
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$buf .= pyjslib_printWorker( $obj, $nl, $multi_arg, $depth + 1 );
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}
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}
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else if( is_bool( $objs )) {
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$buf = $objs ? "True" : "False";
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}
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else if( is_null( $objs )) {
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$buf = 'None';
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}
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else if( is_float( $objs )) {
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$buf = (int)$objs;
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}
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else if( is_string( $objs ) && ($multi_arg && $depth > 2 || (!$multi_arg && $depth > 1) ) ) {
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$buf = "'$objs'";
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}
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elseif( is_array( $objs )) {
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$buf = '[';
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$cnt = 0;
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foreach( $objs as $obj ) {
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$val = pyjslib_printWorker($obj, $nl, false, $depth + 1);
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if( $cnt ++ > 0 ) {
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$buf .= ', ';
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}
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$buf .= $val;
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}
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$buf .= "]";
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// $buf = '[' . implode( ", ", $objs ) . ']';
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}
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else {
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$buf = $objs;
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}
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if( $depth == 1 && (!strlen($buf) || $buf[strlen($buf)-1] != "\n") ) {
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$buf .= $nl ? "\n" : " ";
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}
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return $buf;
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}
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function pyjslib_repr($obj) {
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return pyjslib_printWorker($obj, false, false);
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}
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function pyjslib_print($objs, $multi_arg=false) {
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echo pyjslib_printWorker($objs, false, $multi_arg);
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}
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function pyjslib_printnl($objs, $multi_arg=false) {
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echo pyjslib_printWorker($objs, true, $multi_arg);
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}
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function py2php_kwargs_function_call($funcname, $ordered, $named) {
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if( $funcname == 'array' || $funcname == 'pyjslib_dict' ) {
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return $named;
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}
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$num_ordered = count($ordered);
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$count = 1;
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$refFunc = new ReflectionFunction($funcname);
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foreach( $refFunc->getParameters() as $param ){
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if( $param->isVariadic() ) {
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$ordered[$count-1] = $named;
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break;
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}
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//invokes ReflectionParameter::__toString
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if( $count > $num_ordered ) {
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$name = $param->name;
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$default = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null;
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$ordered[] = @$named[$name] ?: $default;
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}
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$count ++;
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}
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//var_dump($ordered);
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return call_user_func_array($funcname, $ordered);
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}
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function py2php_kwargs_method_call( $obj, $method, $ordered, $named ) {
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$num_ordered = count($ordered);
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$count = 1;
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$refFunc = new ReflectionMethod($obj, $method);
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foreach( $refFunc->getParameters() as $param ){
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//invokes ReflectionParameter::__toString
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if( $count > $num_ordered ) {
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$name = $param->name;
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$default = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null;
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$ordered[] = @$named[$name] ?: $default;
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}
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$count ++;
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}
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$callable = [$obj, $method];
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return call_user_func_array($callable, $ordered);
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}
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class IOError extends Exception{
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}
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class ValueError extends Exception{
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}
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function pyjslib_open( $name, $mode="r", $buffering=null ) {
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return new pyjslib_file( $name, $mode, $buffering );
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}
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class pyjslib_file implements Iterator {
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private $fh = false;
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private $current_line = null;
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// public attributes of python file class.
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public $closed = true;
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public $encoding = null;
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public $errors = [];
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public $mode = null;
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public $newlines = null;
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public $softspace = false;
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function __construct($name_or_fd, $mode="r", $buffering=null) {
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if( is_resource($name_or_fd) ) {
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$this->fh = $name_or_fd;
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$this->closed = false;
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$meta = stream_get_meta_data( $name_or_df );
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$this->mode = $meta['mode'];
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return;
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}
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$name = $name_or_fd;
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try {
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$this->fh = fopen($name, $mode);
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if( !$this->fh ) {
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throw new Exception("Could not open $name");
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}
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$this->closed = false;
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$this->mode = $mode;
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}
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catch( Exception $e ) {
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throw new IOError( $e->getMessage(), $e->getCode() );
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}
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}
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function close() {
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if( $this->fh ) {
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fclose( $this->fh );
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$this->fh = null;
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$this->closed = true;
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}
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}
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function flush() {
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if( !$this->fh ) {
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throw new ValueError("File is closed.");
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}
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fflush( $this->fh );
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}
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function fileno() {
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if( !$this->fh ) {
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throw new ValueError("File is closed.");
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}
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return $this->fh;
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}
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function isatty() {
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if( !$this->fh ) {
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throw new ValueError("File is closed.");
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}
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return posix_isatty( $this->fh );
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}
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/* ---
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* Begin PHP Iterator implementation
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* ---
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*/
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function rewind() {
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fseek( $this->fh, 0 );
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$this->line = 0;
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}
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function current() {
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if( !$this->current_line ) {
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$this->current_line = fgets( $this->fh );
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}
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return $this->current_line;
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}
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function key() {
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return $this->line;
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}
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function next() {
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$this->current(); // ensure current line has been retrieved.
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$this->current_line = fgets( $this->fh );
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$this->line ++;
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return $this->current_line;
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}
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function valid() {
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return $this->fh != false && !feof( $this->fh );
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}
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/* ---
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* End PHP Iterator implementation
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* ---
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*/
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function read($size=null) {
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if( $size !== null) {
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return fread( $this->fh, $size);
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}
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return stream_get_contents( $this->fh );
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}
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function readline($size=null) {
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return fgets( $this->fh, $size );
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}
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function readlines($sizehint=null) {
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$len = 0;
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$lines = array();
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while( $line = fgets( $this->fh ) ) {
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$len += strlen( $line );
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$lines[] = $line;
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if( $sizehint && $len >= $sizehint ) {
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break;
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}
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}
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return $lines;
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}
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function seek($offset, $whence=SEEK_SET) {
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return fseek( $this->fh, $offset, $whence);
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}
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function tell() {
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return ftell($this->fh);
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}
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function truncate( $size ) {
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$rc = ftruncate( $this->fh, $size );
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}
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function write( $str ) {
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fwrite( $this->fh, $str );
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}
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function writelines($sequence) {
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foreach($sequence as $line) {
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$this->write( $line );
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}
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}
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}
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