moodle-mod_game/bookquiz/importodt.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * This is a very rough importer for odt
 * 
 * The script supports book
 * Is based on class  office  from http://www.phpclasses.org/browse/package/2586.html
 *
 * @version $Id: importodt.php,v 1.5 2012/07/25 11:16:04 bdaloukas Exp $
 * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
 * @package game
 **/

require_once("../../../config.php");
require_once( "../header.php");
require_once("../locallib.php");

$subchapter = optional_param('subchapter',  '', PARAM_ALPHA);
$overwrite = optional_param('overwrite',  0, PARAM_INT);
$attempt = game_getattempt( $game, $detail);
$bookid = $game->bookid;
if ($bookid == 0) {
    print_error( get_string( 'bookquiz_not_select_book', 'game'));
}

if ($form = data_submitted()) {
    // Filename.
    if (empty($_FILES['newfile'])) {
        // File was just uploaded.
        notify(get_string("uploadproblem") );
    }

    if ((!is_uploaded_file($_FILES['newfile']['tmp_name']) or $_FILES['newfile']['size'] == 0)) {
        notify(get_string("uploadnofilefound") );
    } else {
        // Valid file is found.
        if (readdata( $course->id, 'game', $dirtemp, $rlevels, $rtitles, $rtexts, $dirfordelete)) {
            // First try to reall all of the data in.
            if ($overwrite) {
                game_bookquiz_deletebook( $course->id, $bookid);
            }
            // Parse all the html files into objects.
            $pageobjects = extract_data( $course->id, 'book', $bookid, $dirtemp, $subchapter, $rlevels, $rtitles, $rtexts);
            clean_temp( $dirfordelete); // All done with files so dump em.

            // Function to preps the data to be sent to DB.
            $objects = game_bookquiz_create_objects( $pageobjects, $bookid);

            if (!game_bookquiz_save_objects( $objects)) {
                // Sends it to DB.
                print_error('could not save');
            }
        } else {
            print_error('could not get data');
        }

        print_continue("{$CFG->wwwroot}/mod/game/view.php?id=$cm->id");
        echo $OUTPUT->footer($course);
        exit;
    }
}

// Print upload form.

    print_heading_with_help( get_string( "bookquiz_import_odt", "game"), "importodt", "game");

    echo $OUTPUT->box_start('center');
?>
    <form id="theform" enctype="multipart/form-data" method="post">
    <input type="hidden" name="id" value="<?php echo $cm->id; ?>" />
    <table cellpadding="5">

    <tr><td align="right"><b>
    <?php print_string("upload"); ?> :</td><td>
    <input name="newfile" type="file" size="50" />
	
	<tr valign="top">
        <td valign="top" align="right">
            <b><?php echo get_string( 'bookquiz_subchapter', 'game');?>:</b>
        </td>
        <td>
        <input name="subchapter" type="checkbox" value="1" checked="1" />        </td>
    </tr>

	<tr valign="top"><td align="right"><b></b></td><td align="left"><select id="overwrite" name="overwrite" >
		<option value="0" selected="selected">Προσθήκη στο τέλος</option>
		<option value="1">Αντικατάσταση</option>
		</select>
	</td></tr>

    </td></tr><tr><td>&nbsp;</td><td>
    <input type="submit" name="save" value="<?php echo get_string("uploadthisfile"); ?>" />
    </td></tr>

    </table>
    </form>
	<?php
    echo $OUTPUT->box_end();

    echo $OUTPUT->footer($course);

// START OF FUNCTIONS.

// The rbasedir variable contains the directory where the temp files are.
// At the end the directory must be deleted.
function readdata( $courseid, $modname, &$rbasedir, &$rlevels, &$rtitles, &$rtexts, &$dirfordelete) {
    // This function expects a odt file to be uploaded.  Then it parses the content.xml to determine.
    // Then copies the images.
    global $CFG;

    // Create a random upload directory in temp.
    $newdir = $CFG->dataroot."/temp/$modname";
    if (!file_exists( $newdir)) {
        mkdir( $newdir);
    }

    $i = 1;
    srand((double)microtime() * 1000000);
    while (true) {
        $rbasedir = "$modname/$i-".rand(0, 10000);
        $newdir = $CFG->dataroot.'/temp/'.$rbasedir;
        if (!file_exists( $newdir)) {
            mkdir( $newdir);
            $newdir .= '/';
            break;
        }
        $i++;
    }
    $dirfordelete = $rbasedir;
    $rbasedir .= '/';

    $zipfile = $_FILES["newfile"]["name"];
    $tempzipfile = $_FILES["newfile"]["tmp_name"];

    // Creates our directory.
    $pathparts = pathinfo($zipfile);
    // Takes off the extension.
    $dirname = substr($zipfile, 0, strpos($zipfile, '.'.$pathparts['extension']));
    if (!file_exists($newdir.$dirname)) {
        mkdir($newdir.$dirname);
    }

    // Move our uploaded file to temp/game.
    move_uploaded_file( $tempzipfile, $newdir.$zipfile);

    // If the file ends with .lnk then use .odt instead.
    if (substr( $zipfile, -4) == ".lnk") {
        $zipfile = substr( $zipfile, 0, -4).".odt";
    }

    // Unzip it!
    unzip_file ( $newdir.$zipfile, $newdir.$dirname, false);

    $rbasedir .= $dirname;  // Update the base.
    $newdir .= $dirname;

    // This is the file where we get the names of the files for the slides (in the correct order too).
    $content = $newdir.'/content.xml';
    $data = file_get_contents( $content);

    $content = $newdir.'/styles.xml';
    if (file_exists( $content)) {
        $datastyle = file_get_contents( $content);
    } else {
        $datastyle = '';
    }

    oo_game_convert_ver2( $data, $datastyle, $rlevels, $rtitles, $rtexts);

    return true;
}

function oo_game_convert_ver2( $data, $datastyle, &$rlevels, &$rtitles, &$rtexts) {
    $rlevels = array();
    $rtitles = array();
    $rtexts = array();

    // We have tables, encode it here so all <text:p in them don't get preg_match_all few lines later.
    if (ereg('table:table', $data)) {
        $data = str_replace('<table:table', '<text:p text:style-name="RKRK"><table:table', $data);
        $data = str_replace('</table:table>', '</table:table></text:p>', $data);
        $data = preg_replace('#<table:table(.*?)</table:table>#es', "base64_encode('\\1')", $data);
    }

    $styles = array();
    game_bookquiz_convert_ver2_computestyles( $datastyle, $styles, true);
    game_bookquiz_convert_ver2_computestyles( $data, $styles, false);

    game_bookquiz_splitsections($data, $positions, $inputs, $titles, $titleframes, $texts);
    for ($i = 0; $i < count( $positions); $i++) {
        preg_match_all( "#text:outline-level=\"([0-9]*)\"#es", $inputs[ $i], $matches);
        $levels = $matches[ 1];
        if (count( $levels) > 0) {
            $level = $levels[ 0];
        } else {
            $level = 0;
        }

        $rlevels[] = $level;
        $rtitles[] = strip_tags( $titles[ $i]);

        $textframe = game_bookquiz_convert($titleframes[ $i], $styles, $images);
        $text = game_bookquiz_convert($texts[ $i], $styles, $images);

        if ($textframe != '') {
            $text = $textframe.'<br>'.$text;
        }

        echo "<hr><b>".$titles[ $i]."</b><br>".$text."\r\n\r\n\r\n\r\n";

        $rtexts[] = $text;
    }
}

function extract_data( $courseid, $modname, $id, $basedir, $subchapter, $levels, $titles, $texts) {
    global $CFG;
    global $matches;

    $dirtemp = $CFG->dataroot.'/temp/'.$basedir;

    for ($i = 0; $i < count( $levels); $i++) {
        echo $levels[ $i]." ".$titles[ $i]."<br>";
    }

    $extractedpages = array();

    // Directory for images.
    make_mod_upload_directory( $courseid); // Make sure moddata is made.
    make_upload_directory( $courseid.'/moddata/'.$modname, false);
    // We store our images in a subfolder in here.
    make_upload_directory( $courseid.'/moddata/'.$modname."/".$id, false);

    $imagedir = $CFG->dataroot.'/'.$courseid.'/moddata/'.$modname."/".$id;

    if ($CFG->slasharguments) {
        $imagelink = $CFG->wwwroot.'/file.php/'.$courseid.'/moddata/'.$modname."/".$id;
    } else {
        $imagelink = $CFG->wwwroot.'/file.php?file=/'.$courseid.'/moddata/'.$modname."/".$id;
    }

    // Try to make a unique subfolder to store the images.
    $i = 1;
    while (true) {
        $newdir = $imagedir.'/'.$i;
        if (!file_exists( $newdir)) {
            // Ok doesnt exist so make the directory and update our paths.
            mkdir( $newdir);
            $imagedir = $newdir;
            $imagelink = $imagelink.'/'.$i;
            break;
        }
        $i++;
    }

    for ($i = 0; $i < count( $titles); $i++) {
        // Start building our page.
        $page = new stdClass;
        $page->title = $titles[ $i];
        $page->content = $texts[ $i];
        $page->subchapter = ( $levels[ $i] >= 2);

        // Check if the nexts are subchapters.
        for ($j = $i + 1; $j < count( $titles); $j++) {
            if ($levels[ $j] > 2) {
                $page->content .= '<br><b><u>'.$titles[ $j].'</u></b><br>'.$texts[ $j];
                $i = $j;
                continue;
            }
            break;
        }

        preg_match_all('#="Pictures/([a-z .A-Z_0-9]*)"#es', $page->content, $imgs);

        foreach ($imgs[1] as $img) {
            $src = $dirtemp.'/Pictures/'.$img;
            $dest = $imagedir.'/'.$img;
            rename( $src, $dest);

            $page->content = str_replace( "Pictures/$img", $imagelink."/".$img, $page->content);
        }

        // Add the page to the array.
        $extractedpages[] = $page;
    } // End $pages foreach loop.

    return $extractedpages;
}

/*
    Clean up the temp directory
 */
function clean_temp( $base) {
    global $CFG;

    // This function is broken, use it to clean up later.
    // Should only clean up what we made as well because someone else could be importing ppt as well.
    $dir = $CFG->dataroot.'/temp/'.$base;

    remove_dir( $dir);
}

/*
    Creates objects an chapter object that is to be inserted into the database
*/
function game_bookquiz_create_objects( $pageobjects, $bookid) {
    global $DB;

    $chapters = array();

    $lastpagenum = $DB->get_field('book_chapters', 'MAX(pagenum) as num', array( 'bookid' => $bookid));

    foreach ($pageobjects as $pageobject) {
        $chapter = new stdClass;

        // Same for all chapters.
        $chapter->bookid = $bookid;
        $chapter->pagenum = ++$lastpagenum;
        $chapter->timecreated = time();
        $chapter->timemodified = time();
        $chapter->subchapter = 0;

        if ($pageobject->title == '') {
            $chapter->title = "Page $count";  // No title set so make a generic one.
        } else {
            $chapter->title = addslashes($pageobject->title);
        }
        $chapter->subchapter = $pageobject->subchapter;

        $content = str_replace("\n", '', $pageobject->content);
        $content = str_replace("\r", '', $content);
        $content = str_replace('&#13;', '', $content);  // Puts in returns?
        $content = '<p>'.$content.'</p>';

        $chapter->content = addslashes( $content);

        $chapters[] = $chapter;
    }

    return $chapters;
}

// Save the chapter objects to the database.
function game_bookquiz_save_objects($chapters) {
    global $DB;

    // Nothing fancy, just save them all in order.
    foreach ($chapters as $chapter) {
        if (!$newid = $DB->insert_record('book_chapters', $chapter)) {
            print_error('Could not insert to table book_chapters');
        }
    }

    return true;
}

// Splits the data to.
function game_bookquiz_splitsections($data, &$positions, &$inputs, &$titles, &$titleframes, &$texts) {
    preg_match_all('#<text:h (.*?)>(.*?)</text:h>#es', $data, $matches, PREG_OFFSET_CAPTURE);

    $in = $matches[ 1];
    $title = $matches[ 2];

    $positions = array();
    $inputs = array();
    $titles = array();

    $oldposition = 0;
    $oldlen = 0;
    for ($i = 0; $i < count( $in); $i++) {
        $inputs[] = $in[ $i][ 0];

        $newposition = $in[ $i][ 1];
        $positions[] = $newposition;

        $titlenet = $title[ $i][ 0];
        $titleframe = '';

        // Frames inside header.
        preg_match_all('#<draw:frame (.*?)>(.*?)</draw:frame>#es', $titlenet, $titlematches, PREG_OFFSET_CAPTURE);
        $frames = $titlematches[ 2];
        if (count( $frames) > 0) {
            for ($j = 0; $j < count( $frames); $j++) {
                $titleframe .= $frames[ $j][ 0];
                $titlenet = substr( $titlenet, $frames[ $j][ 1] + strlen( $frames[ $j][ 0]) + 13);
            }
        }

        $titles[] = $titlenet;
        $titleframes[] = $titleframe;

        if ($i > 0) {
            $texts[] = substr( $data, $oldposition + $oldlen, $newposition - $oldposition - $oldlen);
        }

        $oldlen = strlen( $title[ $i][ 0]) + strlen( $in[ $i][ 0]) + 10;
        $oldposition = $newposition;
    }
    $newposition = strlen( $data);
    $texts[] = substr( $data, $oldposition + $oldlen, $newposition - $oldposition - $oldlen);
}

function game_bookquiz_convert( $data, $styles, &$images) {
    $images = array();

    // Get data.
    preg_match_all('#<text:p text:style-name="([a-z A-Z_0-9]*)">(.*?)</text:p>#es', $data, $text);
    $originals = $text[ 0];
    $names = $text[ 1];
    $texts = $text[ 2];

    for ($i = 0; $i < count( $texts); $i++) {
        $name = $names[ $i];
        $text = $texts[ $i];

        // Repairs draw:frame.
        $pattern = "#<draw:frame draw:style-name=\"([a-z .A-Z_0-9]*)\" (.*?)<draw:image xlink:href=\"Pictures/([a-z .A-Z_0-9]*)(.*?)</draw:frame>#es";
        preg_match_all( $pattern, $text, $matches);
        if (count( $matches[ 1]) ) {
            $new = game_bookquiz_convert_image( $matches, $styles, $images);
            $data = str_replace( $originals[ $i], $new, $data);
        } else if ($name == 'RKRK') {
            $new = game_bookquiz_convert_RKRK( $text);
            $data = str_replace( $originals[ $i], $new, $data);
        } else {
            $new = '<P>'.game_bookquiz_convert_text( $text, $styles).'</P>';
            $data = str_replace( $originals[ $i], $new, $data);
        }
    }

    // Repairs text:span text:style-name.
    preg_match_all( '#<text:span text:style-name="([a-z .A-Z_0-9]*)">(.*?)</text:span>#es', $data, $text);
    $originals = $text[ 0];
    $names = $text[ 1];
    $texts = $text[ 2];
    for ($i = 0; $i < count( $texts); $i++) {
        $name = $names[ $i];
        $text = $texts[ $i];

        $pattern = "#<draw:frame draw:style-name=\"([a-z .A-Z_0-9]*)\" (.*?)<draw:image xlink:href=\"Pictures/([a-z .A-Z_0-9]*)(.*?)</draw:frame>#es";
        preg_match_all( $pattern, $text, $matches);
        if (count( $matches[ 1]) ) {
            $new = game_bookquiz_convert_image( $matches, $styles, $images);
            $data = str_replace( $originals[ $i], $new, $data);
        } else if ($name == 'RKRK') {
            $new = game_bookquiz_convert_RKRK( $text);
            $data = str_replace( $originals[ $i], $new, $data);
        } else {
            $new = "<span ".$styles[ $name].'>'.game_bookquiz_convert_text( $text, $styles).'</span>';
            $data = str_replace( $originals[ $i], $new, $data);
        }
    }

    // Repairs text:a.
    preg_match_all( '#<text:a (.*?) xlink:href="(.*?)">(.*?)</text:a>#es', $data, $text);
    $originals = $text[ 0];
    $hrefs = $text[ 2];
    $texts = $text[ 3];
    for ($i = 0; $i < count( $texts); $i++) {
        $href = $hrefs[ $i];
        $text = $texts[ $i];

        $new = "<a href=\"$href\">$text</a>";
        $data = str_replace( $originals[ $i], $new, $data);
    }

    // Repair text:list.
    preg_match_all( '#<text:list text:style-name="([a-z A-Z_0-9]*)">(.*?)</text:list>#es', $data, $text);
    $originals = $text[ 0];
    $names = $text[ 1];
    $texts = $text[ 2];

    for ($i = 0; $i < count( $texts); $i++) {
        $new = '<UL>'.$texts[ $i].'</UL>';
        $data = str_replace( $originals[ $i], $new, $data);

        // I have to repair the listitems.
        preg_match_all( '#<text:list-item>(.*?)</text:list-item>#es', $data, $listitems);
        $originallistitems = $listitems[ 0];
        $items = $listitems[ 1];
        for ($j = 0; $j < count( $items); $j++) {
            $new = '<LI>'.$items[ $j];
            $data = str_replace( $originallistitems[ $j], $new, $data);
        }
    }

    $data = str_replace( '<text:line-break/>', '<br>', $data);

    return $data;
}

function game_bookquiz_convert_text( $text, $styles) {
    $pattern = "#<text:span text:style-name=\"([a-z .A-Z_0-9]*)\">(.*?)</text:span>#es";
    preg_match_all( $pattern, $text, $matches);

    $originals = $matches[ 0];
    $names = $matches[ 1];
    $spantexts = $matches[ 2];

    for ($i = 0; $i < count( $names); $i++) {
        $name = $names[ $i];
        $style = $styles[ $name];

        $new = "<text:span style=\"$style\">".$spantexts[ $i]."</text:span>";
        $text = str_replace( $originals[ $i], $new, $text);
    }

    return $text;
}

function game_bookquiz_convert_image( $matches, $xmlstyles, &$images) {
    $ret = '';

    $styles = $matches[ 1];
    $pictures = $matches[ 3];

    for ($j = 0; $j < count( $pictures); $j++) {
        $style = $styles[ $j];

        $ret .= '<div class="'.$style.'"><img src="Pictures/'.$pictures[$j].'"></div>';
        $images[] = $pictures[$j];
    }

    return $ret;
}

function game_bookquiz_convert_rkrk( $text) {
    $table = base64_decode($text);
    $table = stripslashes($table);
    $table = strtr($table, array('</table:table>' => '</table>', '<table:table-row>' => '<tr>', '</table:table-row>' => '</tr>', '</table:table-cell>' => '</td>', '</table:table-header-rows>' => '', '<table:table-header-rows>' => '', '>' => ">\n", '</text:p>'  => ''));

    preg_match_all('#table:name="(.*?)" table:style-name="(.*?)">#es', $table, $repl);
    foreach ($repl[0] as $val) {
        $table = str_replace($val, '<table border="1"><tr>', $table);
    }

    preg_match_all('#<text:p text:style-name="(.*?)">#es', $table, $repl);
    foreach ($repl[0] as $key => $val) {
        $table = str_replace($val, '', $table);
    }

    preg_match_all('#<table:table-column (.*?)">#es', $table, $repl);
    foreach ($repl[0] as $val) {
        $table = str_replace($val, '', $table);
    }

    preg_match_all('#<table:table-cell table:style-name="(.*?)" office:value-type=(.*?)">#es', $table, $repl);
    foreach ($repl[0] as $val) {
        $table = str_replace($val, '<td>', $table);
    }

    // Maybe there are a lot of pictures inside a table.
    preg_match_all('#xlink:href="Pictures/([a-z.A-Z_0-9]*)"#es', $table, $repl);
    foreach ($repl[ 1] as $picture) {
        $table = str_replace('<draw:image xlink:href="Pictures/'.$picture.'" xlink:type="simple" xlink:show="embed" xlink:actuate="onLoad"/>', '<img src="Pictures/'.$picture.'">', $table);
    }
    if (strpos( $table, "</table>") === false) {
        $table .= "</table>";
    }

    $ret = '<BR>'.$table.'<BR>';

    return $ret;
}

function game_bookquiz_deletebook( $courseid, $bookid) {
    global $CFG;

    if (!delete_records( 'book_chapters', 'bookid', $bookid)) {
        print_error( "Can't delete records from book_chapters bookid=$bookid");
    }

    game_full_rmdir( "$CFG->dataroot/$courseid/moddata/book/$bookid");
}

function game_bookquiz_convert_ver2_computestyles( $data, &$styles, $isstyle) {
    preg_match_all('#<style:style style:name="(.*?)"(.*?)>(.*?)</style:style>#es', $data, $style);

    $stylenames = $style[ 1];
    $styleinfos = $style[ 2];
    $styledatas = $style[ 3];
    for ($i = 0; $i < count( $stylenames); $i++) {
        $name = $stylenames[ $i];

        $change = false;
        for (;;) {
            $pos1 = strpos( $styledatas[ $i], 'style:parent-style-name');
            $pos2 = strpos( $styledatas[ $i], '/>');
            if (($pos1 === false) or ($pos2 === false)) {
                break;
            }
            if ($pos1 > $pos2) {
                break;
            }

            // Is a parent style.
            $s = substr( $styledatas[ $i], 0, $pos2 + 2);
            game_bookquiz_convertstyle_parent( $s, $styles);

            $styledatas[ $i] = substr( $styledatas[ $i], $pos2 + 2);
            $change = true;
        }

        if ($change) {
            // Must to recompute name, styledatas, styleinfos.
            preg_match_all('#<style:style style:name="(.*?)"(.*?)>(.*?)</style:style>#es', $data, $style);
            $name = $style[ 1][ 0];
            $styleinfos[ $i] = $style[ 2][ 0];
            $styledatas[ $i] = $style[ 3][ 0];
        }

        $styles[ $name] = game_bookquiz_convertstyle( $styledatas[ $i], $styleinfos[ $i], $styles);
    }
}

function game_bookquiz_convertstyle_parent( $data, &$styles) {
    $styleitems = array();

    preg_match_all( '#(.*?)style:name="(.*?)"(.*?)style:parent-style-name="(.*?)"(.*?)#es', $data, $infos);
    $names = $infos[ 2];
    $parents = $infos[ 4];
    if (count( $parents)) {
        if (array_key_exists( $parents[ 0], $styles)) {
            // Is a child style. Must to copy the properties of the parent style.
            $a = explode( ';', $styles[ $parents[ 0]]);
            foreach ($a as $s) {
                $pos = strpos( $s, ':');
                $key = substr( $s, 0, $pos);
                $item = substr( $s, $pos + 1);
                if ($item == '') {
                    continue;
                }
                $styleitems[ $key] = $item;
            }
        }
        $name = $names[ 0];
    }

    $style = '';
    foreach ($styleitems as $key => $item) {
        $style .= ';'.$key.':'.$item;
    }

    $styles[ $name] = substr( $style, 1);
}

function game_bookquiz_convertstyle( $data, $styleinfo, $styles) {
    $styleitems = array();

    preg_match_all( '#<style:paragraph-properties (.*?)/>#es', $data, $infos);
    $lines = $infos[ 1];
    if (count( $lines)) {
        $line = $lines[ 0];

        if ($line != '') {
            game_bookquiz_convertstyle_paragraph( $line, $styleitems);
        }
    }

    preg_match_all( '#<style:text-properties (.*?)/>#es', $data, $infos);
    $lines = $infos[ 1];
    if (count( $lines)) {
        $line = $lines[ 0];

        if ($line != '') {
            game_bookquiz_convertstyle_textproperties( $line, $styleitems);
        }
    }

    if (count( $styleitems) == 0) {
        return '';
    }

    $style = '';
    foreach ($styleitems as $key => $item) {
        $style .= ';'.$key.':'.$item;
    }

    return substr( $style, 1);
}

function game_bookquiz_convertstyle_paragraph( $line, &$styleitems) {
    preg_match_all( '#(.*?)=(.*?) #es', $line.' ', $datas);
    $data1 = $datas[ 1];
    $data2 = $datas[ 2];

    $ret = '';
    for ($i = 0; $i < count( $data1); $i++) {
        $eq1 = $data1[ $i];
        $eq2 = $data2[ $i];

        if ((substr( $eq2, 0, 1) == '"') and (substr( $eq2, -1, 1) == '"')) {
            $eq2 = substr( $eq2, 1, -1);
        }

        switch ($eq1) {
            case 'fo:text-align':
                $styleitems[ 'align'] = $eq2;
                break;
            case 'fo:background-color':
                $styleitems[ 'background-color'] = $eq2;
                break;
        }
    }
}

function game_bookquiz_convertstyle_textproperties( $line, &$styleitems) {
    preg_match_all( '#(.*?)=(.*?) #es', $line.' ', $datas);
    $data1 = $datas[ 1];
    $data2 = $datas[ 2];

    $ret = '';
    for ($i = 0; $i < count( $data1); $i++) {
        $eq1 = $data1[ $i];
        $eq2 = $data2[ $i];

        if ((substr( $eq2, 0, 1) == '"') and (substr( $eq2, -1, 1) == '"')) {
            $eq2 = substr( $eq2, 1, -1);
        }

        switch( $eq1) {
            case 'fo:font-size':
            case 'fo:color':
            case 'fo:background-color':
            case 'fo:font-style':
            case 'fo:font-weight':
                $styleitems[ substr( $eq1, 3)] = $eq2;
                break;
            case 'style_text_underline_style':
                if ($eq2 == 'solid') {
                    $styleitems[ 'text-decoration'] = 'underline';
                }
                break;
        }
    }
}