[gnome-maps/wip/mlundblad/maps-uri: 8/11] uris: Add function to parse maps: URIs

[Marcus Lundblad <mlundblad src gnome org>]

commit d16d198ee54c8e4b60569d4a9aa525c536aea92d
Author: Marcus Lundblad <ml update uu se>
Date:   Mon Nov 1 22:42:04 2021 +0100

    uris: Add function to parse maps: URIs
    
    Adds a function to parse a search query
    from a maps: URI.
    See https://www.iana.org/assignments/uri-schemes/prov/maps

 src/uris.js       | 22 ++++++++++++++++++++++
 tests/urisTest.js | 13 +++++++++++++
 2 files changed, 35 insertions(+)
---
diff --git a/src/uris.js b/src/uris.js
index 96b698f2..97ed4c42 100644
--- a/src/uris.js
+++ b/src/uris.js
@@ -22,6 +22,9 @@
 const _ = imports.gettext.gettext;
 
 const GLib = imports.gi.GLib;
+const Soup = imports.gi.Soup;
+
+const Utils = imports.utils;
 
 // Matches URLs for OpenStreetMap (for addressing objects or coordinates)
 const OSM_URL_REGEX = new RegExp(/https?:\/\/(www\.)?openstreetmap\.org./);
@@ -102,3 +105,22 @@ function parseAsObjectURL(url) {
 
     return [];
 }
+
+/**
+ * For maps: URIs, return the search query string if a valid URI
+ * otherwise null.
+ */
+function parseMapsURI(uri) {
+    let path = uri.substring('maps:'.length);
+    let [param, value] = Utils.splitAtFirst(path, '=');
+
+    if (param === 'q') {
+        try {
+            return Soup.uri_decode(value);
+        } catch (error) {
+            return null;
+        }
+    } else {
+        return null;
+    }
+}
diff --git a/tests/urisTest.js b/tests/urisTest.js
index 60848ec7..f7991ec8 100644
--- a/tests/urisTest.js
+++ b/tests/urisTest.js
@@ -19,6 +19,10 @@
  * Author: Marcus Lundblad <ml update uu se>
  */
 
+pkg.require({ 'Gdk': '3.0',
+              'Gtk': '3.0',
+              'Soup': '2.4' });
+
 const JsUnit = imports.jsUnit;
 
 const URIS = imports.uris;
@@ -29,6 +33,7 @@ const OSM_COORD_URL1 =
 function main() {
     parseAsObjectURLTest();
     parseAsCoordinateURLTest();
+    parseMapsURITest();
 }
 
 function parseAsObjectURLTest() {
@@ -59,6 +64,14 @@ function parseAsCoordinateURLTest() {
                        
URIS.parseAsCoordinateURL('https://www.openstreetmap.org/?#map=12/59.40538/17.34894'));
 }
 
+function parseMapsURITest() {
+    JsUnit.assertEquals('Query', URIS.parseMapsURI('maps:q=Query'));
+    JsUnit.assertEquals('Search query', URIS.parseMapsURI('maps:q=Search%20query'));
+    JsUnit.assertNull(URIS.parseMapsURI('maps:No%20query'));
+    JsUnit.assertNull(URIS.parseMapsURI('not_a_valid_uri'));
+    JsUnit.assertNull(URIS.parseMapsURI('maps:q=Foo%bar'));
+}
+
 function _assertArrayEquals(arr1, arr2) {
     JsUnit.assertEquals(arr1.length, arr2.length);
     for (let i = 0; i < arr1.length; i++) {