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Current File : /var/www/crm/include/SugarHtml/SugarHtml.php

<?php
if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
/*********************************************************************************
 * SugarCRM Community Edition is a customer relationship management program developed by
 * SugarCRM, Inc. Copyright (C) 2004-2012 SugarCRM Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
 * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with
 * this program; if not, see http://www.gnu.org/licenses or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 * 
 * You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
 * SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
 * these Appropriate Legal Notices must retain the display of the "Powered by
 * SugarCRM" logo. If the display of the logo is not reasonably feasible for
 * technical reasons, the Appropriate Legal Notices must display the words
 * "Powered by SugarCRM".
 ********************************************************************************/

/**
 * SugarHtml is a static class that provides a collection of helper methods for creating HTML DOM elements.
 *
 * @auther Justin Park(jpark@sugarcrm.com)
 *
 */
class SugarHtml {
    const SINGLE_QUOTE = "'";
    const DOUBLE_QUOTE = '"';
    const ASSIGN_SIGN = "=";
    const HTML_TAG_BEGIN = "<";
    const HTML_TAG_END = ">";
    const SMARTY_TAG_BEGIN = "{";
    const SMARTY_TAG_END = "}";
    const CLAUSE_TAG_BEGIN = "(";
    const CLAUSE_TAG_END = ")";

    /**
     * @var integer the counter for generating automatic input field names.
     */
    public static $count=0;

    /**
     * @static
     * Create an open html element
     *
     * @param String $tagName - the tag name
     * @param array $params - the element attributes
     * @param bool $self_closing - whether the element is self-closing or not
     * @return string - generated html string
     */
    public static function createOpenTag($tagName, $params = array(), $self_closing = false) {

        $self_closing_tag = ($self_closing) ? "/" : "";
        if(empty($params))
            return "<{$tagName}{$self_closing_tag}>";

        $options = self::createAttributes($params);
        return "<{$tagName} {$options}{$self_closing_tag}>";
    }
    /**
     * @static
     * Create a close html element
     *
     * @param String $tagName - the tag name
     * @return string - generated html string
     */
    public static function createCloseTag($tagName) {
        return "</{$tagName}>";
    }
    /**
     * @static
     * Create a html block given a cascade array tree.
     * Resemble the array form generated by parseHtmlTag
     * @see SugarHtml::parseHtmlTag
     *
     * @param array $dom_tree - Cascade array form
     * <pre>
     * 1. Simple html format
     * array(
     *      'tag' => 'div',
     *      // all attributes are assigned in key-value form
     *      'id' => 'div_id',
     *      'class' => 'wrapper',
     *      ...
     * )
     *
     * 2. Cascade html format
     * array(
     *      'tag' => 'div',
     *      //all subitems are assigned in container
     *      'container' => array(
     *          array(
     *              'tag' => 'input',
     *              'type' => 'hidden',
     *          )
     *      )
     * )
     *
     * 3. Siblings
     * array(
     *      //all siblings are assigned in a parallel array form
     *      array('tag' => 'input', 'type' => 'button', ... ),
     *      array('tag' => 'input', 'type' => 'submit', ... )
     * )
     *
     * 4. Smarty
     * array(
     *      'smarty' => array(
     *          array(
     *              //smarty must contain 'template'. Container will replace with the same key value
     *              'template' => '{if}[CONTENT1]{else}[CONTENT2]{/if}',
     *              //content1 will be assign on the lefthand side, and content2 will be on righthand side
     *              '[CONTENT1]' => array(
     *                  //cascade valid array form
     *              )
     *              '[CONTENT2]' => array(...)
     *          ),
     *      )
     * )
     * </pre>
     *
     * @return string - generated html string
     */
    public static function createHtml($dom_tree = array()) {

        $out = "";
        if(isset($dom_tree[0])) { //dom contains sibling items
            foreach($dom_tree as $dom) {
                $out .= is_array($dom) ? self::createHtml($dom) : $dom;
            }
        } else if( isset($dom_tree['tag']) ) {
            $tagName = $dom_tree['tag'];
            $self_closing = $dom_tree['self_closing'];
            unset($dom_tree['tag']);
            unset($dom_tree['self_closing']);
            if(isset($dom_tree['container'])) {
                $container = $dom_tree['container'];
                unset($dom_tree['container']);
            }
            $out .= self::HTML_TAG_BEGIN."{$tagName} ";
            if(isset($dom_tree['smarty'])) {
                $out .= self::createHtml(array(
                    'smarty' => $dom_tree['smarty']
                )).' ';
                unset($dom_tree['smarty']);
            }
            $out .= self::createHtml($dom_tree);
            if($self_closing) {
                $out .= '/>';
            } else{
                $out .= self::HTML_TAG_END;
                $out .= (is_array($container)) ? self::createHtml($container) : $container;
                $out .= self::createCloseTag($tagName);
            }
        } else if( isset($dom_tree['smarty']) ) { //dom contains smarty function
            $count = 0;
            foreach($dom_tree['smarty'] as $blocks) {
                $template = $blocks['template'];
                unset($blocks['template']);
                $replacement = array();
                foreach($blocks as $key => $value) {
                    $replacement[$key] = is_array($value) ? self::createHtml($value) : $value;
                }
                if($count++ > 0) $out .= ' ';
                $out .= strtr($template, $replacement);
            }
        } else {
            $count = 0;
            foreach($dom_tree as $attr => $value) {
                if($count++ > 0) $out .= ' ';
                $out .= (empty($value)) ? $attr : $attr.'="'.$value.'"';
            }
        }

        return $out;
    }

    public static function parseSugarHtml($sugar_html = array()) {
        $output = array();
        $input_types = array(
            'submit', 'button', 'hidden', 'checkbox', 'input'
        );

        if(in_array($sugar_html['type'], $input_types)) {
            $sugar_html['htmlOptions']['type'] = (empty($sugar_html['htmlOptions']['type'])) ? $sugar_html['type'] : $sugar_html['htmlOptions']['type'];
            $sugar_html['htmlOptions']['value'] = $sugar_html['value'];

            $output = array_merge(array(
                'tag' => 'input',
                'self_closing' => true,
            ), $sugar_html['htmlOptions']);
        }
        if(isset($sugar_html['template'])) {
            $output = array(
                'smarty' => array(
                    array(
                        'template' => $sugar_html['template'],
                        '[CONTENT]' => $output
                    )
                )
            );
        }

        return $output;
    }

    /**
     * @static
     * Disassemble an html string into a cascaded array form elements
     *
     * @param String $code - html string (support the mixed html string with smarty blocks)
     * @param array $appendTo - Precedent siblings
     * @return array - structual array form, can be restored in a html code by createHtml
     * @see SugarHtml::createHtml
     */
    public static function parseHtmlTag($code, $appendTo = array()) {
        $code = ltrim($code);
        $start_pos = strpos($code, ' ') ? strpos($code, ' ') : strpos($code, self::HTML_TAG_END);
        $output = array();
        if(substr($code, 0, 1) != self::HTML_TAG_BEGIN || $start_pos === false) {
            $offset = 0;
            self::parseSmartyTag($code, $output, $offset);
            $remainder = ltrim(substr($code, $offset));
            if(!empty($remainder)) {
                array_push($appendTo, $output);
                return self::parseHtmlTag($remainder, $appendTo);
            }
        } else {
            $tag = substr($code, 1, $start_pos - 1);
            $closing_tag = '</'.$tag;
            $end_pos = strpos($code, $closing_tag, $start_pos + 1);
            $output['tag'] = $tag;

            if($end_pos === false) {
                $output['self_closing'] = true;
                $code = substr($code, $start_pos + 1);
            } else {
                $output['self_closing'] = false;
                $code = substr($code, $start_pos + 1, $end_pos - $start_pos - 1);
            }
            $remainder = self::extractAttributes($code, $output);

            if(!empty($remainder)) {
                array_push($appendTo, $output);
                return self::parseHtmlTag($remainder, $appendTo);
            }
        }
        return (empty($appendTo)) ? $output : array_merge($appendTo, array($output));
    }

    /**
     * @static
     * Disassemble a smarty string into a cascaded array form elements
     *
     * @param String $code - smarty encoded string
     * @param Array $output - parsed attribute
     * @param int $offset
     * @param bool $is_attr - whether current smarty block is inside html attributes or not
     */
    public static function parseSmartyTag($code, &$output, &$offset = 0, $is_attr = false) {
        if(empty($output['smarty']))
            $output['smarty'] = array();

        $_str = ltrim(substr($code, $offset + 1));

        preg_match("/^[$\w]+/", $_str, $statement);
        $_smarty_closing = self::SMARTY_TAG_BEGIN.'/'.$statement[0];
        $_left = strlen($statement[0]);

        $_right = strpos($code, $_smarty_closing, $offset);
        if($_right === false) { //smarty closed itself
            $_right = strpos($code, self::SMARTY_TAG_END, $offset);
        } else {
            preg_match_all('/\{( |)+'.substr($_str, 0, $_left).'/', substr($_str, 0, $_right), $matches);

            $match_count = count($matches[0]);
            while($match_count-- > 0) {
                $_right = strpos($code, $_smarty_closing, $_right + strlen($_smarty_closing));
            }

            $_right = strpos($code, self::SMARTY_TAG_END, $_right);
        }
        $smarty_string = substr($code, $offset, $_right + 1 - $offset);

        $clauses = array_slice(
            //split into each clause
            preg_split("/[\{\}]/i", $smarty_string),
            1, -1 //slice out the first and last items, which is empty.
        );
        $smarty_template = array(
            'template' => '',
        );
        //Concatenate smarty variables
        $reserved_strings = array(
            '$', 'ldelim', 'rdelim'
        );
        $reserved_functions = array(
            'literal' => false,
            'nocache' => false,
        );
        $queue = 0;
        $is_literal = false;
        $current_literal_string = '';
        for($seq = 0; $seq < count($clauses); $seq++) {
            $is_reserved = false;

            $current_literal_string = !empty($current_literal_string) ? $current_literal_string : (isset($reserved_functions[trim($clauses[$seq])]) ? trim($clauses[$seq]) : '');
            $is_literal = $is_literal || !empty($current_literal_string);

            foreach($reserved_strings as $str) {
                if(substr(ltrim($clauses[$seq]), 0, strlen($str)) == $str) {
                    $is_reserved = true;
                    break;
                }
            }
            if($is_literal || ($seq > 0 && $is_reserved)) {
                if($queue == 0)
                    $clauses[$queue] = self::SMARTY_TAG_BEGIN.$clauses[$seq].self::SMARTY_TAG_END;
                else
                    $clauses[--$queue] .= self::SMARTY_TAG_BEGIN.$clauses[$seq].self::SMARTY_TAG_END;
                $is_literal = $is_literal && (substr(ltrim($clauses[$seq]), 0, strlen("/".$current_literal_string)) != "/".$current_literal_string);
                $current_literal_string = ($is_literal) ? $current_literal_string : '';
                if($seq < count($clauses) - 1) {
                    $clauses[$queue++] .= $clauses[++$seq];
                } else {
                    $queue++;
                }
            } else {
                $clauses[$queue++] = $clauses[$seq];
            }
        }
        array_splice($clauses, $queue);
        //Split phrases for the conditional statement
        $count = 0;
        $queue = 0;
        for($seq = 0; $seq < count($clauses); $seq++) {

            if ($seq > 0 && substr(ltrim($clauses[$seq]), 0, 2) == 'if') {
                $count++;
            }
            if($count > 0) {
                $clauses[--$queue] .= ($seq % 2 == 0) ? self::SMARTY_TAG_BEGIN.$clauses[$seq].self::SMARTY_TAG_END : $clauses[$seq];
                if($seq < count($clauses)) {
                    $clauses[$queue++] .= $clauses[++$seq];
                }
            } else {
                $clauses[$queue++] = $clauses[$seq];
            }

            if ( $seq > 0 && substr(ltrim($clauses[$seq - 1]), 0, 3) == '/if') {
                $count--;
            }
        }
        array_splice($clauses, $queue);

        //resemble the smarty phases
        $seq = 0;
        foreach($clauses as $index => $clause) {
            if($index % 2 == 0) {
                if(self::SMARTY_TAG_BEGIN == substr($clause, 0, 1) && self::SMARTY_TAG_END == substr($clause, -1, 1))
                    $smarty_template['template'] .= $clause;
                else
                    $smarty_template['template'] .= '{'.$clause.'}';
            } else if( !empty($clause) ){
                $key = '[CONTENT'.($seq++).']';
                $smarty_template['template'] .= $key;
                $params = array();
                if($is_attr)
                    self::extractAttributes($clause, $params);
                else
                    $params = self::parseHtmlTag($clause);
                $smarty_template[$key] = $params;
            }
        }
        $output['smarty'][] = $smarty_template;
        $offset = $_right + 1;
    }

    /**
     * @static
     * Disassemble an html attributes into a key-value array form
     *
     * @param String $code - attribute string (i.e. - id='form_id' name='button' value='View Detail' ...)
     * @param Array $output - Parsed the attribute into key-value form
     * @return string - Remainder string by spliting with ">"
     */
    public static function extractAttributes($code, &$output) {
        $var_assign = false;
        $quote_encoded = false;
        $smarty_encoded = false;
        $cache = array();
        $code = rtrim($code);
        for($i = 0; $i < strlen($code) ; $i ++) {
            $char = $code[$i];
            if( !$smarty_encoded && ($char == self::SINGLE_QUOTE || $char == self::DOUBLE_QUOTE) ) {
                if(empty($quote_type)) {
                    $quote_encoded = true;
                    $quote_type = $char;
                } else if ($quote_type == $char) {
                    if(!empty($cache)) {
                        $string = implode('', $cache);
                        if(empty($var_name)) {
                            $var_name = $string;
                        } else if($var_assign) {
                            $output[trim($var_name)] = $string;
                            unset($var_name);
                        }
                    }
                    $quote_type = '';
                    $var_assign = false;
                    $cache = array();
                    $quote_encoded = false;
                } else {
                    array_push($cache, $char);
                }
            } else if ( $quote_encoded && $char == self::SMARTY_TAG_BEGIN ) {
                $smarty_encoded = true;
                array_push($cache, $char);
            } else if ( $quote_encoded && $char == self::SMARTY_TAG_END ) {
                $smarty_encoded = false;
                array_push($cache, $char);
            } else if ( !$quote_encoded && $char == ' ' ) {
                if(!empty($cache)) {
                    $string = implode('', $cache);
                    if(empty($var_name)) {
                        $var_name = $string;
                    } else if($var_assign) {
                        $output[trim($var_name)] = $string;
                        unset($var_name);
                    }
                    $quote_encoded = false;
                    $var_assign = false;
                    $cache = array();
                }
            } else if ( !$quote_encoded && $char == self::ASSIGN_SIGN ) {

                if(!empty($var_name)) {
                    $output[$var_name] = '';
                }
                $string = implode('', $cache);
                if(trim($string) != "") {
                    $var_name = $string;
                }
                $var_assign = true;
                $cache = array();
            } else if ( !$quote_encoded && $char == self::SMARTY_TAG_BEGIN) {
                self::parseSmartyTag($code, $output, $i, true);
            } else if ( !$quote_encoded && $char == self::HTML_TAG_END ) {
                break;
            } else {
                array_push($cache, $char);
            }
        }
        if(!empty($cache)) {
            $var_name = implode('', $cache);
            $output[$var_name] = '';
        }

        if(isset($output['self_closing']) && $output['self_closing'] === false) {
            $output['container'] = self::parseHtmlTag(substr($code, $i + 1));
            return '';
        }

        return substr($code, $i + 1);
    }

    /**
     * @static
     * Creates HTML attribute elements corresponding key-value pair.
     *
     * @param Array $params - Attributes (key-value pair)
     * @return string - Generated html attribute string
     */
    public static function createAttributes($params) {
        $options = "";
        foreach($params as $attr => $value) {
            if(is_numeric($attr) === false) {
                $attr = trim($attr);
                if($value)
                    $options .= $attr.'="'.$value.'" ';
                elseif(!empty($attr))
                    $options .= $attr.' ';
            }
        }
        return $options;
    }

}

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