implement plain line parser

src/browser/main/tab/page/content/text/gemini/reader/mod.rs

@@ -1,6 +1,7 @@
 mod parser;
 
 use parser::header::Header;
+use parser::plain::Plain;
 
 use gtk::{
     prelude::{StyleContextExt, WidgetExt},
@@ -19,10 +20,16 @@ impl Reader {
         let mut markup = String::new();
 
         for line in gemtext.lines() {
+            // Is header
             if let Some(header) = Header::from(line) {
                 markup.push_str(header.markup());
                 continue;
             }
+
+            // Is link @TODO
+
+            // Nothing match, escape string just
+            markup.push_str(Plain::from(line).markup())
         }
 
         // Init CSS

src/browser/main/tab/page/content/text/gemini/reader/parser/mod.rs

@@ -1 +1,2 @@
 pub mod header;
+pub mod plain;

src/browser/main/tab/page/content/text/gemini/reader/parser/plain.rs

@@ -0,0 +1,23 @@
+use gtk::glib::{markup_escape_text, GString};
+
+pub struct Plain {
+    markup: GString,
+    source: GString,
+}
+
+impl Plain {
+    pub fn from(line: &str) -> Plain {
+        Self {
+            markup: GString::from(format!("{}\n", markup_escape_text(line))),
+            source: GString::from(line),
+        }
+    }
+
+    pub fn markup(&self) -> &GString {
+        &self.markup
+    }
+
+    pub fn source(&self) -> &GString {
+        &self.source
+    }
+}