From 05f1e6734bf4d116ab491d07b28fa8d26ca79bbb Mon Sep 17 00:00:00 2001
From: dvkt <c@dvkt.io>
Date: Mon, 16 Dec 2019 17:01:23 -0800
Subject: [PATCH] parse urls

---
 src/gopher.rs | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++
 src/menu.rs   |  7 ++++++
 src/ui.rs     |  8 ++++++-
 3 files changed, 73 insertions(+), 1 deletion(-)

diff --git a/src/gopher.rs b/src/gopher.rs
index fa2bf21..edae6cf 100644
--- a/src/gopher.rs
+++ b/src/gopher.rs
@@ -43,3 +43,62 @@ pub fn fetch(host: &str, port: &str, selector: &str) -> io::Result<String> {
         Err(e) => Err(e),
     }
 }
+
+enum Parsing {
+    Host,
+    Port,
+    Selector,
+}
+
+// Parses gopher URL into parts.
+pub fn parse_url<'a>(url: &'a str) -> (Type, &'a str, &'a str, &'a str) {
+    let url = url.trim_start_matches("gopher://");
+
+    let mut host = "";
+    let mut port = "70";
+    let mut sel = "/";
+    let mut typ = Type::Text;
+    let mut state = Parsing::Host;
+    let mut start = 0;
+
+    for (i, c) in url.char_indices() {
+        match state {
+            Parsing::Host => {
+                match c {
+                    ':' => state = Parsing::Port,
+                    '/' => state = Parsing::Selector,
+                    _ => continue,
+                }
+                host = &url[start..i];
+                start = i + 1;
+            }
+            Parsing::Port => {
+                if c == '/' {
+                    state = Parsing::Selector;
+                    port = &url[start..i];
+                    start = i + 1;
+                }
+            }
+            Parsing::Selector => {}
+        }
+    }
+
+    match state {
+        Parsing::Selector => sel = &url[start..],
+        Parsing::Port => port = &url[start..],
+        Parsing::Host => host = &url[start..],
+    };
+
+    let mut chars = sel.chars();
+    if let (Some(fst), Some('/')) = (chars.nth(0), chars.nth(1)) {
+        match fst {
+            '0' => typ = Type::Text,
+            '1' => typ = Type::Menu,
+            'h' => typ = Type::HTML,
+            _ => {}
+        }
+        sel = &sel[2..];
+    }
+
+    (typ, host, port, sel)
+}
diff --git a/src/menu.rs b/src/menu.rs
index cd60c60..ede2d6d 100644
--- a/src/menu.rs
+++ b/src/menu.rs
@@ -29,6 +29,13 @@ pub struct Line {
 }
 
 impl View for MenuView {
+    fn render(&self) -> String {
+        let mut out = self.menu.raw.to_string();
+        out.push('\n');
+        out.push_str(&format!("{:#?}", self));
+        out
+    }
+
     fn process_input(&mut self, key: Key) -> Action {
         match key {
             Key::Char('\n') => return Action::Open,
diff --git a/src/ui.rs b/src/ui.rs
index 92559fe..ec04dba 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -32,6 +32,7 @@ pub enum Action {
 
 pub trait View {
     fn process_input(&mut self, c: Key) -> Action;
+    fn render(&self) -> String;
 }
 
 impl UI {
@@ -56,7 +57,12 @@ impl UI {
 
     pub fn render(&self) -> String {
         // let (cols, rows) = termion::terminal_size().expect("can't get terminal size");
-        String::new()
+        if self.pages.len() > 0 && self.page < self.pages.len() {
+            if let Some(page) = self.pages.get(self.page) {
+                return page.render();
+            }
+        }
+        String::from("N/A")
     }
 
     pub fn load(&mut self, url: String) {