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<?php
/**
* @file
* This file is part of the PdfParser library.
*
* @author Sébastien MALOT <sebastien@malot.fr>
*
* @date 2017-01-03
*
* @license LGPLv3
*
* @url <https://github.com/smalot/pdfparser>
*
* PdfParser is a pdf library written in PHP, extraction oriented.
* Copyright (C) 2017 - Sébastien MALOT <sebastien@malot.fr>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.
* If not, see <http://www.pdfparser.org/sites/default/LICENSE.txt>.
*/
namespace Smalot\PdfParser;
use Smalot\PdfParser\Element\ElementArray;
/**
* Class Pages
*/
class Pages extends PDFObject
{
/**
* @var array<\Smalot\PdfParser\Font>|null
*/
protected $fonts;
/**
* @todo Objects other than Pages or Page might need to be treated specifically
* in order to get Page objects out of them.
*
* @see https://github.com/smalot/pdfparser/issues/331
*/
public function getPages(bool $deep = false): array
{
if (!$this->has('Kids')) {
return [];
}
/** @var ElementArray $kidsElement */
$kidsElement = $this->get('Kids');
if (!$deep) {
return $kidsElement->getContent();
}
// Prepare to apply the Pages' object's fonts to each page
if (false === \is_array($this->fonts)) {
$this->setupFonts();
}
$fontsAvailable = 0 < \count($this->fonts);
$kids = $kidsElement->getContent();
$pages = [];
foreach ($kids as $kid) {
if ($kid instanceof self) {
$pages = array_merge($pages, $kid->getPages(true));
} elseif ($kid instanceof Page) {
if ($fontsAvailable) {
$kid->setFonts($this->fonts);
}
$pages[] = $kid;
}
}
return $pages;
}
/**
* Gathers information about fonts and collects them in a list.
*
* @return void
*
* @internal
*/
protected function setupFonts()
{
$resources = $this->get('Resources');
if (method_exists($resources, 'has') && $resources->has('Font')) {
// no fonts available, therefore stop here
if ($resources->get('Font') instanceof Element\ElementMissing) {
return;
}
if ($resources->get('Font') instanceof Header) {
$fonts = $resources->get('Font')->getElements();
} else {
$fonts = $resources->get('Font')->getHeader()->getElements();
}
$table = [];
foreach ($fonts as $id => $font) {
if ($font instanceof Font) {
$table[$id] = $font;
// Store too on cleaned id value (only numeric)
$id = preg_replace('/[^0-9\.\-_]/', '', $id);
if ('' != $id) {
$table[$id] = $font;
}
}
}
$this->fonts = $table;
} else {
$this->fonts = [];
}
}
}
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