Only use `=>` links

src/main.rs

@@ -34,7 +34,7 @@ impl FromStr for Status {
         let code: i8 = splits.nth(1).unwrap().parse().unwrap();
         let meta: String = String::from(splits.nth(2).unwrap());
 
-        Ok(Status { code, meta })
+        Ok(Status {code, meta})
     }
 }
 
@@ -103,70 +103,77 @@ fn prompt_for_url(s: &mut Cursive) {
     );
 }
 
-fn visit_url(s: &mut Cursive, url: &str) {
+fn visit_url(s: &mut Cursive, url_s: &str) {
     // Close URL popup if any
     if s.find_id::<Dialog>("url_popup").is_some() {
         s.pop_layer();
     }
 
-    match get_data(&url) {
-        Ok(new_content) => {
-            let mut main_view = s.find_id::<SelectView>("main").unwrap();
-            let mut container = s.find_id::<Dialog>("container").unwrap();
-
-            container.set_title(url);
-            main_view.clear();
-            main_view.add_all_str(new_content.lines());
-            main_view.set_on_submit(follow_link);
-        }
-        Err(msg) => {
-            s.add_layer(Dialog::info(msg));
+    match parse_link(url_s) {
+        Ok(url) => {
+            match get_data(url) {
+                Ok(new_content) => {
+                    let mut main_view = s.find_id::<SelectView>("main").unwrap();
+                    let mut container = s.find_id::<Dialog>("container").unwrap();
+
+                    container.set_title(url_s);
+                    main_view.clear();
+                    main_view.add_all_str(new_content.lines());
+                    main_view.set_on_submit(follow_link);
+                }
+                Err(msg) => {
+                    s.add_layer(Dialog::info(msg));
+                }
+            }
+        },
+        Err(_) => {
+            s.add_layer(Dialog::info(format!("Could not parse {}", url_s)));
         }
     }
 }
 
 fn follow_link(s: &mut Cursive, line: &str) {
     let text = format!("{}", line);
-    let re1 = Regex::new(r"^\[(.*)\|(URL:)?(.*)\]$").unwrap(); // `[Foo|URL:link]` links
-    let re2 = Regex::new(r"^=>\s(\S*)\s(\w*)$").unwrap(); // `=> link Foo` links
+    let link_regexp = Regex::new(r"^=>\s(\S*)(.*)?$").unwrap();
 
-    if re1.is_match(&text) {
-        let caps = re1.captures(&text).unwrap();
-        let url = caps.get(3).map_or("", |m| m.as_str());
-        let next_url = parse_link(url);
-        visit_url(s, &next_url)
-    } else if re2.is_match(&text) {
-        let caps = re2.captures(&text).unwrap();
+    if link_regexp.is_match(&text) {
+        let caps = link_regexp.captures(&text).unwrap();
         let url = caps.get(1).map_or("", |m| m.as_str());
         let next_url = parse_link(url);
-        visit_url(s, &next_url)
+        visit_url(s, next_url.expect("Not an URL").as_str())
     } else {
         ()
     }
 }
 
-fn parse_link(url: &str) -> String {
-    if url.starts_with("gemini://") {
-        url.to_owned()
-    } else if url.starts_with("/") {
-        format!("gemini://{}{}", get_last_host(), url)
-    } else {
-        format!("gemini://{}/{}", get_last_host(), url)
+fn parse_link(url: &str) -> Result<url::Url, url::ParseError> {
+    match get_last_host() {
+        Some(host) => {
+            let url_s = if url.starts_with("gemini://") {
+                url.to_owned()
+            } else if url.starts_with("/") {
+                format!("gemini://{}{}", host, url)
+            } else {
+                format!("gemini://{}/{}", host, url)
+            };
+
+            Url::parse(&url_s)
+        },
+        None => {
+            let url_s = if url.starts_with("gemini://") {
+                url.to_owned()
+            } else {
+                format!("gemini://{}", url)
+            };
+
+            Url::parse(&url_s)
+        }
     }
 }
 
-fn is_link(line: &str) -> bool {
-    let text = format!("{}", line);
-    let re1 = Regex::new(r"^\[(.*)\|(URL:)?(.*)\]$").unwrap(); // `[Foo|URL:link]` links
-    let re2 = Regex::new(r"^=>\s(\S*)\s(\w*)$").unwrap(); // `=> link Foo` links
-
-    re1.is_match(&text) || re2.is_match(&text)
-}
-
-fn get_data(url: &str) -> Result<String, String> {
-    let urlp = Url::parse(url).unwrap();
-    let host = urlp.host_str().unwrap();
-    let path = urlp.path();
+fn get_data(url: url::Url) -> Result<String, String> {
+    let host = url.host_str().unwrap();
+    let path = url.path();
     let urlf = format!("{}:1965", host);
 
     let mut builder = TlsConnector::builder();
@@ -182,7 +189,7 @@ fn get_data(url: &str) -> Result<String, String> {
 
             match mstream {
                 Ok(mut stream) => {
-                    append_history(url);
+                    append_history(url.as_str());
 
                     let url_with_path = format!("{}\r\n", path);
                     stream.write_all(url_with_path.as_bytes()).unwrap();
@@ -204,21 +211,26 @@ fn go_back(s: &mut Cursive) {
     }
 }
 
-fn get_last_host() -> String {
+fn get_last_host() -> Option<String> {
     let mut file = File::open("/tmp/asuka_history").expect("file not found");
     let mut content = String::new();
     file.read_to_string(&mut content)
         .expect("Unable to read file");
-    let url = content.lines().last().unwrap();
-    let urlp = Url::parse(url).unwrap();
-    urlp.host_str().unwrap().to_owned()
+    let last_url = content.lines().last();
+    match last_url {
+        Some(url) => {
+            let urlp = Url::parse(url).expect("not an URL");
+            Some(urlp.host_str().unwrap().to_owned())
+        },
+        None => None
+    }
 }
 
 fn get_previous_url() -> Option<String> {
     let mut file = OpenOptions::new()
         .read(true)
         .open("/tmp/asuka_history")
-        .unwrap();
+        .expect("file not found");
     let mut content = String::new();
     file.read_to_string(&mut content)
         .expect("Unable to read file");
@@ -238,7 +250,7 @@ fn append_history(url: &str) {
         .write(true)
         .append(true)
         .open("/tmp/asuka_history")
-        .unwrap();
+        .expect("file not found");
 
     let line = format!("{}\n", url);
     file.write_all(line.as_bytes())