Implement a little more of the Gemtext parser

src/message/parser.rs

@@ -17,7 +17,7 @@ enum State<'a> {
 
 #[derive(Clone, Debug, PartialEq)]
 pub enum GemtextNode {
-    Sender(Vec<Mailbox>),
+    Sender(Mailbox),
     Recipients(Recipients),
     Timestamp(String),
     Text(String),
@@ -33,12 +33,8 @@ pub enum GemtextNode {
 impl fmt::Display for GemtextNode {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
-            Self::Sender(m) => {
-                write!(f, "<")?;
-                m.iter().try_for_each(|m| write!(f, " {m}"))?;
-                writeln!(f)
-            },
             Self::Recipients(r) => writeln!(f, "{r}"),
+            Self::Sender(m) => writeln!(f, "{m}"),
             Self::Timestamp(t) => writeln!(f, "@ {t}"),
             Self::Text(t) => writeln!(f, "{t}"),
             Self::Heading1(h) => writeln!(f, "# {h}"),
@@ -81,33 +77,31 @@ impl<'a> GemtextNode {
         }
     }
 
-    fn parse_blockquote(text: &'a str) -> Self {
-        match text.split_once(char::is_whitespace) {
-            Some((prefix, suffix)) if prefix == ">" => GemtextNode::Quote(suffix.to_string()),
-            _ => GemtextNode::Text(text.to_string()),
-        }
-    }
-
     fn parse_senders(text: &'a str) -> Self {
-        let mut split = text.split_whitespace();
-        match split.next() {
-            Some(s) if s == "<" => {
-                let mut senders: Vec<Mailbox> = vec![];
-                for s in split {
-                    if let Ok(m) = s.parse() {
-                        senders.push(m);
-                    } else {
+        let Some(line) = text.strip_prefix('<') else {
             return Self::Text(text.to_string());
-                    }
-                }
-                Self::Sender(senders)
-            }
-            _ => Self::Text(text.to_string())
+        };
+        if let Ok(user) = line.parse() {
+            Self::Sender(user)
+        } else {
+            Self::Text(text.to_string())
         }
     }
 
     fn parse_recipients(text: &'a str) -> Self {
-        todo!()
+        let Some(line) = text.strip_prefix(':') else {
+            return Self::Text(text.to_string());
+        };
+        let split = line.split_whitespace();
+        let mut recipients: Recipients = Recipients { boxes: vec![] };
+        for s in split {
+            if let Ok(m) = s.parse() {
+                recipients.boxes.push(m);
+            } else {
+                return Self::Text(text.to_string());
+            }
+        }
+        Self::Recipients(recipients)
     }
 
     fn parse_timestamp(text: &'a str) -> Self {
@@ -152,24 +146,51 @@ impl<'a> Parser<'a> {
         self.lines.push(GemtextNode::parse_list_item(line));
     }
 
+    fn quote(&mut self, line: &'a str) {
+        match line.split_once(char::is_whitespace) {
+            Some((prefix, suffix)) if prefix == ">" => self.state = State::Quote(vec![suffix]),
+            _ => self.lines.push(GemtextNode::Text(line.to_string())),
+        }
+    }
+
+    fn enter_preformatted(&mut self, line: &'a str) {
+        let alt = if line.len() > 3 {
+            Some(line[3..].trim())
+        } else {
+            None
+        };
+        let preblk = PreBlk { alt, lines: vec![] };
+        self.state = State::Preformatted(preblk);
+    }
+
+    fn senders(&mut self, line: &'a str) {
+        self.lines.push(GemtextNode::parse_senders(line));
+    }
+
+    fn recipients(&mut self, line: &'a str) {
+        self.lines.push(GemtextNode::parse_recipients(line));
+    }
+
     fn parse_normal(&mut self, line: &'a str) {
         match line {
             s if s.starts_with("=>") => self.link(s),
             s if s.starts_with('#') => self.heading(s),
             s if s.starts_with('*') => self.list_item(s),
-            s if s.starts_with('>') => {},
-            s if s.starts_with("```") => {},
-            s if s.starts_with('<') => {},
-            s if s.starts_with(':') => {},
+            s if s.starts_with('>') => self.quote(s),
+            s if s.starts_with("```") => self.enter_preformatted(s),
+            s if s.starts_with('<') => self.senders(s),
+            s if s.starts_with(':') => self.recipients(s),
             s if s.starts_with('@') => {},
             s => {},
         }
     }
 
     fn parse_preformatted(&mut self, line: &'a str) {
+        todo!()
     }
 
     fn parse_quote(&mut self, line: &'a str) {
+        todo!()
     }
 }