Add the initial skeleton of the parser

1 files changed, 72 insertions, 0 deletions

diff --git a/src/rfc8288.rs b/src/rfc8288.rs
new file mode 100644
index 0000000..b068573
--- /dev/null
+++ b/src/rfc8288.rs
@@ -0,0 +1,72 @@
+enum LinkParserEvent {
+    BeginLinkValue(usize),
+    EndLinkValue(usize),
+
+    BeginLinkParam(usize),
+    EndLinkParam(usize),
+
+    EndOfBuffer,
+}
+
+
+enum State {
+    Start,
+    UriRef,
+}
+
+struct LinkParser {
+    state: State,
+    offset: usize,
+}
+
+impl LinkParser {
+    fn new() -> Self {
+        return LinkParser {
+            state: State::Start,
+            offset: 0,
+        };
+    }
+
+    fn try_match_char(&self, buf: &[u8], b: u8) -> Option<usize> {
+        if buf[self.offset] != b {
+            return None;
+        }
+
+        return Some(1);
+    }
+
+    fn push(&mut self, new_data: &[u8]) -> LinkParserEvent {
+        match self.state {
+            State::Start => {
+                if let Some(len) = self.try_match_char(new_data, b'<') {
+                    self.offset += len;
+                    self.state = State::UriRef;
+
+                    return LinkParserEvent::BeginLinkValue(self.offset - len);
+                }
+
+                todo!();
+            },
+            State::UriRef => {
+                loop {
+                    if let Some(_) = self.try_match_char(new_data, b'>') {
+                        break;
+                    } else {
+                        self.offset += 1;
+                    }
+                }
+                todo!();
+            },
+        }
+    }
+
+    fn finish(&mut self) {
+    }
+}
+
+#[cfg(test)]
+mod test {
+    #[test]
+    fn test() {
+    }
+}