3 files changed, 19 insertions, 0 deletions
diff --git a/lib/jsonfeed/Cargo.toml b/lib/jsonfeed/Cargo.toml
index 99172fd..ad17ccd 100644
--- a/lib/jsonfeed/Cargo.toml
+++ b/lib/jsonfeed/Cargo.toml
@@ -13,3 +13,5 @@ error-chain = "0.12"
 serde = "1"
 serde_derive = "1"
 serde_json = "1"
+
+xesite_types = { path = "../xesite_types" }
diff --git a/lib/jsonfeed/src/builder.rs b/lib/jsonfeed/src/builder.rs
index 640a280..4ce47a4 100644
--- a/lib/jsonfeed/src/builder.rs
+++ b/lib/jsonfeed/src/builder.rs
@@ -90,6 +90,7 @@ pub struct ItemBuilder {
     pub author: Option<Author>,
     pub tags: Option<Vec<String>>,
     pub attachments: Option<Vec<Attachment>>,
+    pub xesite_frontmater: Option<xesite_types::Frontmatter>,
 }
 
 impl ItemBuilder {
@@ -108,6 +109,7 @@ impl ItemBuilder {
             author: None,
             tags: None,
             attachments: None,
+            xesite_frontmater: None,
         }
     }
 
@@ -180,6 +182,11 @@ impl ItemBuilder {
         self
     }
 
+    pub fn xesite_frontmatter(mut self, fm: xesite_types::Frontmatter) -> ItemBuilder {
+        self.xesite_frontmater = Some(fm);
+        self
+    }
+
     pub fn build(self) -> Result<Item> {
         if self.id.is_none() || self.content.is_none() {
             return Err("missing field 'id' or 'content_*'".into());
@@ -198,6 +205,7 @@ impl ItemBuilder {
             author: self.author,
             tags: self.tags,
             attachments: self.attachments,
+            xesite_frontmatter: self.xesite_frontmater,
         })
     }
 }
diff --git a/lib/jsonfeed/src/item.rs b/lib/jsonfeed/src/item.rs
index 0f7d6ab..7b5d734 100644
--- a/lib/jsonfeed/src/item.rs
+++ b/lib/jsonfeed/src/item.rs
@@ -1,3 +1,4 @@
+use std::collections::HashMap;
 use std::default::Default;
 use std::fmt;
 
@@ -31,6 +32,9 @@ pub struct Item {
     pub author: Option<Author>,
     pub tags: Option<Vec<String>>,
     pub attachments: Option<Vec<Attachment>>,
+
+    // xesite extensions
+    pub xesite_frontmatter: Option<xesite_types::Frontmatter>,
 }
 
 impl Item {
@@ -55,6 +59,7 @@ impl Default for Item {
             author: None,
             tags: None,
             attachments: None,
+            xesite_frontmatter: None,
         }
     }
 }
@@ -113,6 +118,9 @@ impl Serialize for Item {
         if self.attachments.is_some() {
             state.serialize_field("attachments", &self.attachments)?;
         }
+        if self.xesite_frontmatter.is_some() {
+            state.serialize_field("_xesite_frontmatter", &self.xesite_frontmatter)?;
+        }
         state.end()
     }
 }
@@ -319,6 +327,7 @@ impl<'de> Deserialize<'de> for Item {
                     author,
                     tags,
                     attachments,
+                    xesite_frontmatter: None,
                 })
             }
         }