forked from friendica/php-json-ld
Use context loader terminology.
This commit is contained in:
Dave Longley
parent
5961e603aa
commit
607575d0d4
83
jsonld.php
83
jsonld.php
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@ -46,7 +46,7 @@
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* [strict] use strict mode (default: true).
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* [optimize] true to optimize the compaction (default: false).
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* [graph] true to always output a top-level graph (default: false).
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return mixed the compacted JSON-LD output.
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*/
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@ -61,7 +61,7 @@ function jsonld_compact($input, $ctx, $options=array()) {
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* @param mixed $input the JSON-LD object to expand.
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* @param assoc[$options] the options to use:
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* [base] the base IRI to use.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array the expanded JSON-LD output.
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*/
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@ -78,7 +78,7 @@ function jsonld_expand($input, $options=array()) {
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* null.
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* @param [options] the options to use:
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* [base] the base IRI to use.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return mixed the flattened JSON-LD output.
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*/
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@ -98,7 +98,7 @@ function jsonld_flatten($input, $ctx, $options=array()) {
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* [explicit] default @explicit flag (default: false).
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* [omitDefault] default @omitDefault flag (default: false).
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* [optimize] optimize when compacting (default: false).
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return stdClass the framed JSON-LD output.
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*/
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@ -115,7 +115,7 @@ function jsonld_frame($input, $frame, $options=array()) {
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* [base] the base IRI to use.
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* [format] the format if output is a string:
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* 'application/nquads' for N-Quads (default).
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array the normalized output.
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*/
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@ -153,7 +153,7 @@ function jsonld_from_rdf($input, $options=array()) {
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* [base] the base IRI to use.
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* [format] the format to use to output a string:
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* 'application/nquads' for N-Quads (default).
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array all RDF statements in the JSON-LD object.
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*/
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@ -179,18 +179,18 @@ $jsonld_cache = new stdClass();
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/** The default active context cache. */
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$jsonld_cache->activeCtx = new ActiveContextCache();
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/** The default JSON-LD URL client. */
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global $jsonld_default_url_client;
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$jsonld_default_url_client = null;
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/** The default JSON-LD context loader. */
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global $jsonld_default_load_context;
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$jsonld_default_load_context = null;
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/**
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* Sets the default JSON-LD URL client.
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* Sets the default JSON-LD context loader.
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*
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* @param callable url_client(url) the URL client to use.
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* @param callable load_context(url) the context loader.
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*/
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function jsonld_set_url_client($url_client) {
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global $jsonld_default_url_client;
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$jsonld_default_url_client = $url_client;
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function jsonld_set_context_loader($load_context) {
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global $jsonld_default_load_context;
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$jsonld_default_load_context = $load_context;
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}
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/**
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@ -201,9 +201,9 @@ function jsonld_set_url_client($url_client) {
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* @return the JSON-LD.
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*/
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function jsonld_get_url($url) {
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global $jsonld_default_url_client;
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if($jsonld_default_url_client !== null) {
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return call_user_func($jsonld_default_url_client, $url);
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global $jsonld_default_load_context;
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if($jsonld_default_load_context !== null) {
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return call_user_func($jsonld_default_load_context, $url);
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}
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// default JSON-LD GET implementation
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@ -497,7 +497,7 @@ class JsonLdProcessor {
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* [skipExpansion] true to assume the input is expanded and skip
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* expansion, false not to, defaults to false.
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* [activeCtx] true to also return the active context used.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return mixed the compacted JSON-LD output.
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*/
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@ -516,7 +516,8 @@ class JsonLdProcessor {
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isset($options['graph']) or $options['graph'] = false;
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isset($options['skipExpansion']) or $options['skipExpansion'] = false;
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isset($options['activeCtx']) or $options['activeCtx'] = false;
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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if($options['skipExpansion'] === true) {
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$expanded = $input;
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@ -627,7 +628,7 @@ class JsonLdProcessor {
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* defaults to true.
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* [keepFreeFloatingNodes] true to keep free-floating nodes,
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* false not to, defaults to false.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array the expanded JSON-LD output.
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*/
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@ -638,13 +639,14 @@ class JsonLdProcessor {
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true;
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isset($options['keepFreeFloatingNodes']) or
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$options['keepFreeFloatingNodes'] = false;
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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// retrieve all @context URLs in the input
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$input = self::copy($input);
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try {
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$this->_retrieveContextUrls(
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$input, new stdClass(), $options['urlClient'], $options['base']);
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$input, new stdClass(), $options['loadContext'], $options['base']);
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}
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catch(Exception $e) {
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throw new JsonLdException(
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@ -675,14 +677,15 @@ class JsonLdProcessor {
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* @param ctx the context to use to compact the flattened output, or null.
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* @param assoc $options the options to use:
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* [base] the base IRI to use.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array the flattened output.
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*/
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public function flatten($input, $ctx, $options) {
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// set default options
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isset($options['base']) or $options['base'] = '';
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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try {
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// expand input
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@ -727,7 +730,7 @@ class JsonLdProcessor {
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* [explicit] default @explicit flag (default: false).
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* [omitDefault] default @omitDefault flag (default: false).
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* [optimize] optimize when compacting (default: false).
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return stdClass the framed JSON-LD output.
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*/
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@ -738,7 +741,8 @@ class JsonLdProcessor {
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isset($options['explicit']) or $options['explicit'] = false;
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isset($options['omitDefault']) or $options['omitDefault'] = false;
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isset($options['optimize']) or $options['optimize'] = false;
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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// preserve frame context
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$ctx = (property_exists($frame, '@context') ?
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@ -799,14 +803,15 @@ class JsonLdProcessor {
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* @param mixed $input the JSON-LD object to normalize.
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* @param assoc $options the options to use:
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* [base] the base IRI to use.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array the JSON-LD normalized output.
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*/
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public function normalize($input, $options) {
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// set default options
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isset($options['base']) or $options['base'] = '';
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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try {
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// expand input then do normalization
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@ -877,14 +882,15 @@ class JsonLdProcessor {
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* [base] the base IRI to use.
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* [format] the format to use to output a string:
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* 'application/nquads' for N-Quads (default).
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return array all RDF statements in the JSON-LD object.
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*/
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public function toRDF($input, $options) {
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// set default options
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isset($options['base']) or $options['base'] = '';
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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try {
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// expand input
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@ -932,7 +938,7 @@ class JsonLdProcessor {
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* @param assoc $options the options to use:
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* [renameBlankNodes] true to rename blank nodes, false not to,
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* defaults to true.
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* [urlClient(url)] the URL client to use.
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* [loadContext(url)] the context loader.
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*
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* @return stdClass the new active context.
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*/
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@ -941,7 +947,8 @@ class JsonLdProcessor {
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isset($options['base']) or $options['base'] = '';
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isset($options['renameBlankNodes']) or $options['renameBlankNodes'] =
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true;
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isset($options['urlClient']) or $options['urlClient'] = 'jsonld_get_url';
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isset($options['loadContext']) or $options['loadContext'] =
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'jsonld_get_url';
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// return initial context early for null context
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if($local_ctx === null) {
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@ -955,7 +962,7 @@ class JsonLdProcessor {
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}
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try {
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$this->_retrieveContextUrls(
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$ctx, new stdClass(), $options['urlClient'], $options['base']);
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$ctx, new stdClass(), $options['loadContext'], $options['base']);
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}
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catch(Exception $e) {
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throw new JsonLdException(
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@ -4558,19 +4565,19 @@ class JsonLdProcessor {
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}
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/**
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* Retrieves external @context URLs using the given URL client. Each
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* Retrieves external @context URLs using the given context loader. Each
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* instance of @context in the input that refers to a URL will be replaced
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* with the JSON @context found at that URL.
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*
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* @param mixed $input the JSON-LD input with possible contexts.
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* @param stdClass $cycles an object for tracking context cycles.
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* @param callable $url_client(url) the URL client.
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* @param callable $load_context(url) the context loader.
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* @param base $base the base URL to resolve relative URLs against.
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*
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* @return mixed the result.
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*/
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protected function _retrieveContextUrls(
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&$input, $cycles, $url_client, $base='') {
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&$input, $cycles, $load_context, $base='') {
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if(count(get_object_vars($cycles)) > self::MAX_CONTEXT_URLS) {
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throw new JsonLdException(
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'Maximum number of @context URLs exceeded.',
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@ -4603,7 +4610,7 @@ class JsonLdProcessor {
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$_cycles->{$url} = true;
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// retrieve URL
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$ctx = $url_client($url);
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$ctx = $load_context($url);
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// parse string context as JSON
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if(is_string($ctx)) {
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@ -4648,7 +4655,7 @@ class JsonLdProcessor {
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}
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// recurse
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$this->_retrieveContextUrls($ctx, $_cycles, $url_client, $url);
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$this->_retrieveContextUrls($ctx, $_cycles, $load_context, $url);
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$urls->{$url} = $ctx->{'@context'};
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}
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