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<?php
/**
* Representation of an EPUB document.
*
* @author Andreas Gohr <andi@splitbrain.org> © 2012
* @author Simon Schrape <simon@epubli.com> © 2015
*/
//namespace Epubli\Epub;
namespace SebLucas\EPubMeta;
use SebLucas\EPubMeta\Dom\Element as EpubDomElement;
use SebLucas\EPubMeta\Dom\XPath as EpubDomXPath;
use SebLucas\EPubMeta\Data\Manifest;
use SebLucas\EPubMeta\Contents\Spine;
use SebLucas\EPubMeta\Contents\Toc;
use DOMDocument;
use DOMElement;
use Exception;
use InvalidArgumentException;
use ZipArchive;
/**
* @todo These are the methods that haven't been integrated with EPub here...
*/
class Other extends EPub
{
/**
* A simple setter for simple meta attributes
*
* It should only be used for attributes that are expected to be unique
*
* @param string $item XML node to set
* @param string $value New node value
* @param bool|string $attribute Attribute name
* @param bool|string $attributeValue Attribute value
* @param bool $caseSensitive
*/
protected function setMeta($item, $value, $attribute = false, $attributeValue = false, $caseSensitive = true)
{
$xpath = $this->buildMetaXPath($item, $attribute, $attributeValue, $caseSensitive);
// set value
$nodes = $this->xpath->query($xpath);
if ($nodes->length == 1) {
/** @var EpubDomElement $node */
$node = $nodes->item(0);
if ($value === '') {
// the user wants to empty this value -> delete the node
$node->delete();
} else {
// replace value
$node->nodeValueUnescaped = $value;
}
} else {
// if there are multiple matching nodes for some reason delete
// them. we'll replace them all with our own single one
foreach ($nodes as $node) {
/** @var EpubDomElement $node */
$node->delete();
}
// re-add them
if ($value) {
$parent = $this->xpath->query('//opf:metadata')->item(0);
$node = new EpubDomElement($item, $value);
$node = $parent->appendChild($node);
if ($attribute) {
if (is_array($attributeValue)) {
// use first given value for new attribute
$attributeValue = reset($attributeValue);
}
$node->setAttrib($attribute, $attributeValue);
}
}
}
$this->sync();
}
/**
* A simple getter for simple meta attributes
*
* It should only be used for attributes that are expected to be unique
*
* @param string $item XML node to get
* @param bool|string $att Attribute name
* @param bool|string $aval Attribute value
* @param bool $caseSensitive
* @return string
*/
protected function getMeta($item, $att = false, $aval = false, $caseSensitive = true)
{
$xpath = $this->buildMetaXPath($item, $att, $aval, $caseSensitive);
// get value
$nodes = $this->xpath->query($xpath);
if ($nodes->length) {
/** @var EpubDomElement $node */
$node = $nodes->item(0);
return $node->nodeValueUnescaped;
} else {
return '';
}
}
/**
* Sync XPath object with updated DOM.
*/
protected function sync()
{
$dom = $this->xpath->document;
$dom->loadXML($dom->saveXML());
$this->xpath = new EpubDomXPath($dom);
// reset structural members
$this->manifest = null;
$this->spine = null;
$this->tocnav = null;
}
}
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