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273
lib/PdfParser/Page.php
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273
lib/PdfParser/Page.php
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<?php
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/**
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* @file
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* This file is part of the PdfParser library.
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*
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* @author Sébastien MALOT <sebastien@malot.fr>
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* @date 2017-01-03
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* @license LGPLv3
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* @url <https://github.com/smalot/pdfparser>
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*
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* PdfParser is a pdf library written in PHP, extraction oriented.
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* Copyright (C) 2017 - Sébastien MALOT <sebastien@malot.fr>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program.
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* If not, see <http://www.pdfparser.org/sites/default/LICENSE.txt>.
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*
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*/
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namespace Smalot\PdfParser;
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use Smalot\PdfParser\Element\ElementArray;
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use Smalot\PdfParser\Element\ElementMissing;
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use Smalot\PdfParser\Element\ElementXRef;
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use Smalot\PdfParser\Element\ElementNull;
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/**
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* Class Page
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*
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* @package Smalot\PdfParser
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*/
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class Page extends Object
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{
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/**
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* @var Font[]
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*/
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protected $fonts = null;
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/**
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* @var Object[]
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*/
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protected $xobjects = null;
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/**
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* @return Font[]
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*/
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public function getFonts()
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{
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if (!is_null($this->fonts)) {
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return $this->fonts;
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}
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$resources = $this->get('Resources');
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if (method_exists($resources, 'has') && $resources->has('Font')) {
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if ($resources->get('Font') instanceof Header) {
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$fonts = $resources->get('Font')->getElements();
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} else {
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$fonts = $resources->get('Font')->getHeader()->getElements();
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}
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$table = array();
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foreach ($fonts as $id => $font) {
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if ($font instanceof Font) {
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$table[$id] = $font;
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// Store too on cleaned id value (only numeric)
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$id = preg_replace('/[^0-9\.\-_]/', '', $id);
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if ($id != '') {
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$table[$id] = $font;
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}
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}
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}
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return ($this->fonts = $table);
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} else {
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return array();
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}
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}
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/**
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* @param string $id
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*
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* @return Font
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*/
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public function getFont($id)
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{
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$fonts = $this->getFonts();
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if (isset($fonts[$id])) {
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return $fonts[$id];
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} else {
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$id = preg_replace('/[^0-9\.\-_]/', '', $id);
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if (isset($fonts[$id])) {
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return $fonts[$id];
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} else {
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return null;
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}
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}
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}
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/**
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* Support for XObject
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*
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* @return Object[]
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*/
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public function getXObjects()
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{
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if (!is_null($this->xobjects)) {
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return $this->xobjects;
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}
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$resources = $this->get('Resources');
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if (method_exists($resources, 'has') && $resources->has('XObject')) {
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if ($resources->get('XObject') instanceof Header) {
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$xobjects = $resources->get('XObject')->getElements();
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} else {
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$xobjects = $resources->get('XObject')->getHeader()->getElements();
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}
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$table = array();
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foreach ($xobjects as $id => $xobject) {
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$table[$id] = $xobject;
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// Store too on cleaned id value (only numeric)
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$id = preg_replace('/[^0-9\.\-_]/', '', $id);
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if ($id != '') {
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$table[$id] = $xobject;
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}
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}
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return ($this->xobjects = $table);
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} else {
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return array();
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}
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}
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/**
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* @param string $id
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*
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* @return Object
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*/
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public function getXObject($id)
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{
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$xobjects = $this->getXObjects();
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if (isset($xobjects[$id])) {
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return $xobjects[$id];
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} else {
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return null;
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/*$id = preg_replace('/[^0-9\.\-_]/', '', $id);
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if (isset($xobjects[$id])) {
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return $xobjects[$id];
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} else {
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return null;
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}*/
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}
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}
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/**
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* @param Page
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*
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* @return string
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*/
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public function getText(Page $page = null)
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{
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if ($contents = $this->get('Contents')) {
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if ($contents instanceof ElementMissing) {
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return '';
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} elseif ($contents instanceof ElementNull) {
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return '';
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} elseif ($contents instanceof Object) {
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$elements = $contents->getHeader()->getElements();
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if (is_numeric(key($elements))) {
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$new_content = '';
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foreach ($elements as $element) {
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if ($element instanceof ElementXRef) {
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$new_content .= $element->getObject()->getContent();
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} else {
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$new_content .= $element->getContent();
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}
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}
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$header = new Header(array(), $this->document);
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$contents = new Object($this->document, $header, $new_content);
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}
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} elseif ($contents instanceof ElementArray) {
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// Create a virtual global content.
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$new_content = '';
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foreach ($contents->getContent() as $content) {
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$new_content .= $content->getContent() . "\n";
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}
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$header = new Header(array(), $this->document);
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$contents = new Object($this->document, $header, $new_content);
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}
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return $contents->getText($this);
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}
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return '';
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}
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/**
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* @param Page
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*
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* @return array
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*/
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public function getTextArray(Page $page = null)
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{
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if ($contents = $this->get('Contents')) {
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if ($contents instanceof ElementMissing) {
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return array();
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} elseif ($contents instanceof ElementNull) {
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return array();
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} elseif ($contents instanceof Object) {
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$elements = $contents->getHeader()->getElements();
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if (is_numeric(key($elements))) {
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$new_content = '';
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foreach ($elements as $element) {
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if ($element instanceof ElementXRef) {
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$new_content .= $element->getObject()->getContent();
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} else {
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$new_content .= $element->getContent();
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}
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}
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$header = new Header(array(), $this->document);
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$contents = new Object($this->document, $header, $new_content);
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}
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} elseif ($contents instanceof ElementArray) {
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// Create a virtual global content.
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$new_content = '';
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foreach ($contents->getContent() as $content) {
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$new_content .= $content->getContent() . "\n";
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}
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$header = new Header(array(), $this->document);
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$contents = new Object($this->document, $header, $new_content);
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}
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return $contents->getTextArray($this);
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}
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return array();
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}
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}
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