/**
* Adds an entry to the directory.
*
* @param PelEntry the entry that will be added.
*
* @todo The entry will be identified with its tag, so each
* directory can only contain one entry with each tag. Is this a
* bug?
*/
function addEntry(PelEntry $e)
{
$this->entries[$e->getTag()] = $e;
}
/**
* Adds an entry to the directory.
*
* @param PelEntry the entry that will be added. If the entry is not
* valid in this IFD (as per {@link isValidTag()}) an
* {@link PelInvalidDataException} is thrown.
*
* @todo The entry will be identified with its tag, so each
* directory can only contain one entry with each tag. Is this a
* bug?
*/
function addEntry(PelEntry $e)
{
if ($this->isValidTag($e->getTag())) {
$e->setIfdType($this->type);
$this->entries[$e->getTag()] = $e;
} else {
throw new PelInvalidDataException("IFD %s cannot hold\n%s", $this->getName(), $e->__toString());
}
}
/**
* Set or update a given tag in this IFD.
*
* This methods is part of the ArrayAccess SPL interface for
* overriding array access of objects, it allows you to add new
* entries or replace esisting entries by doing:
*
* <code>
* $ifd[PelTag::EXPOSURE_BIAS_VALUE] = $entry;
* </code>
*
* Note that the actual array index passed is ignored! Instead the
* {@link PelTag} from the entry is used.
*
* @param PelTag $tag
* the offset to update.
*
* @param PelEntry $e
* the new value.
*/
public function offsetSet($tag, $e)
{
if ($e instanceof PelEntry) {
$tag = $e->getTag();
$this->entries[$tag] = $e;
} else {
throw new PelInvalidArgumentException('Argument "%s" must be a PelEntry.', $e);
}
}
