class URNParser; basic semantics of RFC 8141 q-component & f-component

EticaAI · Oct 1, 2022 · c34501c · c34501c
1 parent 511f63b
commit c34501c
Show file tree

Hide file tree

Showing 2 changed files with 66 additions and 18 deletions.
diff --git a/app/lib/urnresolver.php b/app/lib/urnresolver.php
@@ -10,23 +10,26 @@
 $global_conf = new Config();
 define("URNRESOLVER_BASE", $global_conf->base_iri);
 
-$extention_to_media_type = [
- '.csv' => 'text/csv; charset=utf-8',
- '.json' => 'application/json; charset=utf-8',
- '.jsonld' => 'application/ld+json; charset=utf-8',
- '.tsv' => 'text/tab-separated-values; charset=utf-8',
- '.hxl.csv' => 'text/csv; charset=utf-8',
- '.hxl.tsv' => 'text/tab-separated-values; charset=utf-8',
-];
-
-$processor_tabular = [
- 'delimiter' => [
+
+class Common
+{
+ public const EXT_TO_MEDIATYPE = [
+ '.csv' => 'text/csv; charset=utf-8',
+ '.json' => 'application/json; charset=utf-8',
+ '.jsonld' => 'application/ld+json; charset=utf-8',
+ '.tsv' => 'text/tab-separated-values; charset=utf-8',
+ '.txt' => 'text/plain; charset=utf-8',
+ '.hxl.csv' => 'text/csv; charset=utf-8',
+ '.hxl.tsv' => 'text/tab-separated-values; charset=utf-8',
+ ];
+
+ public const EXT_TABULAR_DELIMITER = [
  '.csv' => ",",
  '.hxl.csv' => ",",
  '.tsv' => "\t",
  '.hxl.tsv' => "\t",
- ]
-];
+ ];
+}
 
 // @TODO implement profiles https://www.w3.org/TR/dx-prof-conneg/
 
@@ -337,6 +340,11 @@ public function execute_redirect(
 /**
  * @see https://www.rfc-editor.org/rfc/rfc8141
  * @see https://www.php.net/manual/en/function.parse-url.php
+ *
+ * @example
+ * // https://www.rfc-editor.org/rfc/rfc8141#section-2.3.1
+ * urn:example:weather?=op=map&lat=39.56&lon=-104.85&datetime=1969-07-21T02:56:15Z
+ *
  */
 class URNParser
 {
@@ -360,6 +368,10 @@ class URNParser
  public ?string $nid; // Lower case (if applicable)
  public ?string $nss;
  public ?array $nss_parts;
+ public ?string $q_component;
+ public ?string $f_component;
+
+ public ?array $q_component_parts;
 
  public function __construct(string $raw_urn)
  {
@@ -384,15 +396,45 @@ public function __construct(string $raw_urn)
  $this->nid = strtolower(array_shift($path_parts));
  $this->nss = implode(':', $path_parts);
  $this->nss_parts = $path_parts;
+
+ // https://www.rfc-editor.org/rfc/rfc8141#section-2.3.2
+ $temp_q = explode('?=', $this->raw_urn);
+ if (count($temp_q) > 1) {
+ $q_and_maybe_f = $temp_q[1];
+ $temp_qf = explode('#', $q_and_maybe_f);
+ $this->q_component = $temp_qf[0];
+ parse_str($this->q_component, $this->q_component_parts);
+ }
+ // https://www.rfc-editor.org/rfc/rfc8141#section-2.3.3
+ $temp_f = explode('#', $this->raw_urn);
+ if (count($temp_f) > 1) {
+ $this->f_component = array_pop($temp_f);
+ }
  }
  }
 }
 
 class URNParserResolver extends URNParser
 {
+ public ?string $file_extension;
+ public ?string $media_type;
+
  public function __construct(string $urn)
  {
  parent::__construct($urn);
+ // if ($this->nid === 'resolver') {
+ // if (!empty($this->query_parts['u2709'])) {
+ // $this->file_extension = $this->query_parts['u2709'];
+ // $this->media_type = Common::EXT_TO_MEDIATYPE[$this->file_extension];
+ // }
+ // }
+ // var_dump($this);die;
+ if (!empty($this->q_component_parts)) {
+ if (!empty($this->q_component_parts['u2709'])) {
+ $this->file_extension = $this->q_component_parts['u2709'];
+ $this->media_type = Common::EXT_TO_MEDIATYPE[$this->file_extension];
+ }
+ }
  }
 }
 
@@ -493,11 +535,16 @@ private function _get_urnr_values(array $filters = null)
 
  public function execute()
  {
- var_dump(parse_url($this->urn));
+ // var_dump(parse_url($this->urn));
+
+ // $test = 'urn:example:weather?=op=map&lat=39.56&lon=-104.85&datetime=1969-07-21T02:56:15Z#lalala#lelele';
 
- $parsed_urn = new URNParser($this->urn);
- var_dump($parsed_urn);
- die;
+ // $parsed_urn = new URNParserResolver($test);
+ // var_dump($parsed_urn);
+
+ // $parsed_urn = new URNParserResolver($this->urn);
+ // var_dump($parsed_urn);
+ // die;
 
  if ($this->urn === 'urn:resolver:ping') {
  return $this->operation_ping();

diff --git a/resolvers/urn:resolver:.urnr.yml b/resolvers/urn:resolver:.urnr.yml
@@ -14,7 +14,8 @@ meta:
  _cc_mode: internal
 
  examples:
- - in.urn: urn:resolver:ping?u2709=.txt
+ # - in.urn: urn:resolver:ping?u2709=.txt
+ - in.urn: urn:resolver:ping?=u2709=.txt
  - in.urn: urn:resolver:index
  # - in.urn: urn:resolver:help
  - in.urn: urn:resolver:_explore