carddav calendar-query: Add parsing support for limit

crates/carddav/src/addressbook/methods/report/addressbook_query/elements.rs

@@ -105,4 +105,30 @@ pub struct AddressbookQueryRequest {
     pub prop: PropfindType<AddressObjectPropWrapperName>,
     #[xml(ns = "rustical_dav::namespace::NS_CARDDAV")]
     pub(crate) filter: FilterElement,
+    #[xml(ns = "rustical_dav::namespace::NS_CARDDAV")]
+    pub(crate) limit: Option<LimitElement>,
 }
+
+// https://datatracker.ietf.org/doc/html/rfc5323#section-5.17
+#[derive(XmlDeserialize, Clone, Debug, PartialEq, Eq)]
+pub struct LimitElement {
+    #[xml(ns = "rustical_dav::namespace::NS_CARDDAV")]
+    pub nresults: NresultsElement,
+}
+
+impl From<u64> for LimitElement {
+    fn from(value: u64) -> Self {
+        Self {
+            nresults: NresultsElement(value),
+        }
+    }
+}
+
+impl From<LimitElement> for u64 {
+    fn from(value: LimitElement) -> Self {
+        value.nresults.0
+    }
+}
+
+#[derive(XmlDeserialize, Clone, Debug, PartialEq, Eq)]
+pub struct NresultsElement(#[xml(ty = "text")] pub u64);

crates/carddav/src/addressbook/methods/report/mod.rs

@@ -159,7 +159,7 @@ mod tests {
     use crate::{
         address_object::AddressObjectPropName,
         addressbook::methods::report::addressbook_query::{
-            Allof, FilterElement, PropFilterElement,
+            Allof, FilterElement, LimitElement, NresultsElement, PropFilterElement,
         },
     };
     use rustical_dav::xml::{PropElement, sync_collection::SyncLevel};
@@ -237,6 +237,9 @@ mod tests {
                 <card:filter>
                     <card:prop-filter name="FN"/>
                 </card:filter>
+                <card:limit>
+                    <card:nresults>100</card:nresults>
+                </card:limit>
             </card:addressbook-query>
         "#,
         )
@@ -259,8 +262,11 @@ mod tests {
                         text_match: vec![],
                         param_filter: vec![],
                         test: Allof::default()
-                    }]
+                    }],
-                }
+                },
+                limit: Some(LimitElement {
+                    nresults: NresultsElement(100)
+                })
             })
         );
     }