/**
* Prepends a base IRI to the given relative IRI.
*
* @param mixed $base a string or the parsed base IRI.
* @param string $iri the relative IRI.
*
* @return string the absolute IRI.
*/
function jsonld_prepend_base($base, $iri)
{
// already an absolute IRI
if (strpos($iri, ':') !== false) {
return $iri;
}
// parse base if it is a string
if (is_string($base)) {
$base = jsonld_parse_url($base);
}
// parse given IRI
$rel = jsonld_parse_url($iri);
// start hierarchical part
$hierPart = $base['protocol'];
if ($rel['authority']) {
$hierPart .= "//{$rel['authority']}";
} else {
if ($base['href'] !== '') {
$hierPart .= "//{$base['authority']}";
}
}
// per RFC3986 normalize
// IRI represents an absolute path
if (strpos($rel['path'], '/') === 0) {
$path = $rel['path'];
} else {
$path = $base['path'];
// append relative path to the end of the last directory from base
if ($rel['path'] !== '') {
$idx = strrpos($path, '/');
$idx = $idx === false ? 0 : $idx + 1;
$path = substr($path, 0, $idx);
if (strlen($path) > 0 && substr($path, -1) !== '/') {
$path .= '/';
}
$path .= $rel['path'];
}
}
// remove slashes and dots in path
$path = jsonld_remove_dot_segments($path, $hierPart !== '');
// add query and hash
if (isset($rel['query'])) {
$path .= "?{$rel['query']}";
}
if (isset($rel['fragment'])) {
$path .= "#{$rel['fragment']}";
}
$rval = $hierPart . $path;
if ($rval === '') {
$rval = './';
}
return $rval;
}
/**
* Prepends a base IRI to the given relative IRI.
*
* @param mixed $base a string or the parsed base IRI.
* @param string $iri the relative IRI.
*
* @return string the absolute IRI.
*/
function jsonld_prepend_base($base, $iri)
{
// skip IRI processing
if ($base === null) {
return $iri;
}
// already an absolute IRI
if (strpos($iri, ':') !== false) {
return $iri;
}
// parse base if it is a string
if (is_string($base)) {
$base = jsonld_parse_url($base);
}
// parse given IRI
$rel = jsonld_parse_url($iri);
// per RFC3986 5.2.2
$transform = array('protocol' => $base['protocol']);
if ($rel['authority'] !== null) {
$transform['authority'] = $rel['authority'];
$transform['path'] = $rel['path'];
$transform['query'] = $rel['query'];
} else {
$transform['authority'] = $base['authority'];
if ($rel['path'] === '') {
$transform['path'] = $base['path'];
if ($rel['query'] !== null) {
$transform['query'] = $rel['query'];
} else {
$transform['query'] = $base['query'];
}
} else {
if (strpos($rel['path'], '/') === 0) {
// IRI represents an absolute path
$transform['path'] = $rel['path'];
} else {
// merge paths
$path = $base['path'];
// append relative path to the end of the last directory from base
if ($rel['path'] !== '') {
$idx = strrpos($path, '/');
$idx = $idx === false ? 0 : $idx + 1;
$path = substr($path, 0, $idx);
if (strlen($path) > 0 && substr($path, -1) !== '/') {
$path .= '/';
}
$path .= $rel['path'];
}
$transform['path'] = $path;
}
$transform['query'] = $rel['query'];
}
}
// remove slashes and dots in path
$transform['path'] = jsonld_remove_dot_segments($transform['path'], !!$transform['authority']);
// construct URL
$rval = $transform['protocol'];
if ($transform['authority'] !== null) {
$rval .= '//' . $transform['authority'];
}
$rval .= $transform['path'];
if ($transform['query'] !== null) {
$rval .= '?' . $transform['query'];
}
if ($rel['fragment'] !== null) {
$rval .= '#' . $rel['fragment'];
}
// handle empty base
if ($rval === '') {
$rval = './';
}
return $rval;
}
