Display file type

src/document.rs

@@ -1,3 +1,4 @@
+use crate::FileType;
 use crate::Position;
 use crate::Row;
 use crate::SearchDirection;
@@ -9,6 +10,7 @@ pub struct Document {
     rows: Vec<Row>,
     pub file_name: Option<String>,
     dirty: bool,
+    file_type: FileType,
 }
 
 impl Document {
@@ -27,9 +29,14 @@ impl Document {
             rows,
             file_name: Some(filename.to_string()),
             dirty: false,
+            file_type: FileType::from(filename),
         })
     }
 
+    pub fn file_type(&self) -> String {
+        self.file_type.name()
+    }
+
     pub fn row(&self, index: usize) -> Option<&Row> {
         self.rows.get(index)
     }
@@ -100,6 +107,7 @@ impl Document {
             }
 
             // File has been cleaned! (Saved)
+            self.file_type = FileType::from(file_name);
             self.dirty = false;
         }
 

src/editor.rs

@@ -136,7 +136,8 @@ impl Editor {
         );
 
         let line_indicator = format!(
-            "{}/{}",
+            "{} | {}/{}",
+            self.document.file_type(),
             self.cursor_position.y.saturating_add(1),
             self.document.len()
         );

src/filetype.rs

@@ -0,0 +1,35 @@
+pub struct FileType {
+    name: String,
+    hl_opts: HighlightingOptions,
+}
+
+#[derive(Default)]
+pub struct HighlightingOptions {
+    pub numbers: bool,
+}
+
+impl Default for FileType {
+    fn default() -> Self {
+        Self {
+            name: String::from("No filetype"),
+            hl_opts: HighlightingOptions::default(),
+        }
+    }
+}
+
+impl FileType {
+    pub fn name(&self) -> String {
+        self.name.clone()
+    }
+
+    pub fn from(file_name: &str) -> Self {
+        if file_name.ends_with(".rs") {
+            return Self {
+                name: String::from("Rust"),
+                hl_opts: HighlightingOptions { numbers: true },
+            };
+        }
+
+        Self::default()
+    }
+}

src/main.rs

@@ -2,6 +2,7 @@
 #![allow(clippy::missing_errors_doc, clippy::must_use_candidate, clippy::panic)]
 mod document;
 mod editor;
+mod filetype;
 mod highlighting;
 mod row;
 mod terminal;
@@ -10,6 +11,7 @@ pub use document::Document;
 use editor::Editor;
 pub use editor::Position;
 pub use editor::SearchDirection;
+pub use filetype::FileType;
 pub use row::Row;
 pub use terminal::Terminal;
 

src/row.rs

@@ -230,8 +230,9 @@ impl Row {
                 &highlighting::Type::None
             };
 
-            if c.is_ascii_digit()
+            if (c.is_ascii_digit()
-                && (prev_is_separator || previous_highlight == &highlighting::Type::Number)
+                && (prev_is_separator || previous_highlight == &highlighting::Type::Number))
+                || (c == &'.' && previous_highlight == &highlighting::Type::Number)
             {
                 highlighting.push(highlighting::Type::Number)
             } else {