forked from friendica/php-json-ld
Compact absolute IRIs to relative IRIs.
This commit is contained in:
Dave Longley
parent
6e7f7a3b9a
commit
505202c213
100
jsonld.php
100
jsonld.php
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@ -276,6 +276,15 @@ function jsonld_parse_url($url) {
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if(!isset($rval['scheme'])) {
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$rval['scheme'] = '';
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}
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if(isset($rval['user']) || isset($rval['pass'])) {
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$rval['auth'] = '';
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if(isset($rval['user'])) {
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$rval['auth'] = $rval['user'];
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}
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if(isset($rval['pass'])) {
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$rval['auth'] .= ":{$rval['pass']}";
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}
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}
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return $rval;
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}
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@ -373,14 +382,74 @@ function jsonld_prepend_base($base, $iri) {
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}
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$absolute_iri = "{$base['scheme']}://";
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if(isset($base['user']) || isset($base['pass'])) {
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$absolute_iri .= "{$base['user']}:{$base['pass']}@";
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if(isset($base['auth'])) {
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$absolute_iri .= "{$base['auth']}@";
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}
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$absolute_iri .= "$authority$path";
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return $absolute_iri;
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}
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/**
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* Removes a base IRI from the given absolute IRI.
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*
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* @param mixed $base the base IRI.
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* @param string $iri the absolute IRI.
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*
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* @return string the relative IRI if relative to base, otherwise the absolute
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* IRI.
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*/
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function jsonld_remove_base($base, $iri) {
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if(is_string($base)) {
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$base = jsonld_parse_url($base);
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}
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// establish base root
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$root = "{$base['scheme']}://";
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if(isset($base['auth'])) {
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$root .= "{$base['auth']}@";
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}
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$authority = $base['host'];
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if(isset($base['port'])) {
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$authority .= ":{$base['port']}";
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}
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$root .= $authority;
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// IRI not relative to base
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if(strpos($iri, $root) !== 0) {
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return $iri;
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}
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// remove path segments that match
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$base_segments = explode('/', $base['path']);
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$iri_segments = explode('/', substr($iri, strlen($root)));
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while(count($base_segments) > 0 && count($iri_segments) > 0) {
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if($base_segments[0] !== $iri_segments[0]) {
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break;
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}
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array_shift($base_segments);
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array_shift($iri_segments);
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}
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// use '../' for each non-matching base segment
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$rval = '';
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if(count($base_segments) > 0) {
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// do not count the last segment if it isn't a path (doesn't end in '/')
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if(substr($base['path'], -1) !== '/') {
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array_pop($base_segments);
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}
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foreach($base_segments as $segment) {
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$rval .= '../';
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}
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}
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// prepend remaining segments
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$rval .= implode('/', $iri_segments);
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return $rval;
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}
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/**
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* A JSON-LD processor.
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*/
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@ -1476,8 +1545,8 @@ class JsonLdProcessor {
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// compact single @id
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if(is_string($expanded_value)) {
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$compacted_value = $this->_compactIri(
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$active_ctx, $expanded_value, null, array(
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'vocab' => ($expanded_property === '@type')));
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$active_ctx, $expanded_value, null,
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array('vocab' => ($expanded_property === '@type')));
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}
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// expanded value must be a @type array
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else {
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@ -3628,9 +3697,10 @@ class JsonLdProcessor {
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if($type_or_language_value === '@id' && self::_isSubjectReference($value)) {
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// try to compact value to a term
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$term = $this->_compactIri(
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$active_ctx, $value->{'@id'}, null,
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array('vocab' => true, 'base' => true));
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if(property_exists($active_ctx->mappings, $term)) {
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$active_ctx, $value->{'@id'}, null, array('vocab' => true));
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if(property_exists($active_ctx->mappings, $term) &&
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$active_ctx->mappings->{$term} &&
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$active_ctx->mappings->{$term}->{'@id'} === $value->{'@id'}) {
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// prefer @vocab
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$options = array('@vocab', '@id', '@none');
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}
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@ -3698,7 +3768,6 @@ class JsonLdProcessor {
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* @param string $iri the IRI to compact.
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* @param mixed $value the value to check or null.
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* @param assoc $relative_to options for how to compact IRIs:
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* base: true to compact against the base IRI, false not to.
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* vocab: true to split after @vocab, false not to.
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* @param mixed $parent the parent element for the value.
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*
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@ -3873,8 +3942,8 @@ class JsonLdProcessor {
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}
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}
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// no compaction choices, return IRI as is
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return $iri;
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// compact IRI relative to base
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return jsonld_remove_base($active_ctx->{'@base'}, $iri);
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}
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/**
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@ -3941,8 +4010,7 @@ class JsonLdProcessor {
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// compact @type IRI
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if(property_exists($value, '@type')) {
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$rval->{$this->_compactIri($active_ctx, '@type')} = $this->_compactIri(
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$active_ctx, $value->{'@type'}, null,
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array('base' => true, 'vocab' => true));
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$active_ctx, $value->{'@type'}, null, array('vocab' => true));
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}
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// alias @language
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else if(property_exists($value, '@language')) {
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@ -3959,18 +4027,18 @@ class JsonLdProcessor {
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// value is a subject reference
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$expanded_property = $this->_expandIri($active_ctx, $active_property);
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$type = self::getContextValue($active_ctx, $active_property, '@type');
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$term = $this->_compactIri(
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$compacted = $this->_compactIri(
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$active_ctx, $value->{'@id'}, null,
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array('vocab' => ($type === '@vocab'), 'base' => true));
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array('vocab' => ($type === '@vocab')));
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// compact to scalar
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if($type === '@id' || $type === '@vocab' ||
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$expanded_property === '@graph') {
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return $term;
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return $compacted;
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}
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$rval = (object)array(
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$this->_compactIri($active_ctx, '@id') => $term);
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$this->_compactIri($active_ctx, '@id') => $compacted);
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return $rval;
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}
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