From 1eb955b474bce1268f273239ddac5f8dbfd69f34 Mon Sep 17 00:00:00 2001
From: Jordan Orelli <jordanorelli@gmail.com>
Date: Sun, 5 Mar 2023 16:48:50 -0600
Subject: [PATCH] some more line movements

---
 src/line.rs | 15 +++++++++++++++
 src/main.rs | 30 +++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/src/line.rs b/src/line.rs
index eb4d7c2..d01c6c2 100644
--- a/src/line.rs
+++ b/src/line.rs
@@ -68,6 +68,21 @@ impl Line {
         }
     }
 
+    /// moves the cursor to the start of the edit line, returning the old cursor value
+    pub fn seek_left(&mut self) -> usize {
+        let n = self.cursor;
+        self.cursor = 0;
+        self.show_debug();
+        n
+    }
+
+    pub fn seek_right(&mut self) -> usize {
+        let n = self.chars.len() - self.cursor;
+        self.cursor = self.chars.len();
+        self.show_debug();
+        n
+    }
+
     pub fn forward(&mut self) -> bool {
         if self.cursor < self.chars.len() {
             self.cursor += 1;
diff --git a/src/main.rs b/src/main.rs
index 845c852..b98f554 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -388,7 +388,7 @@ fn main() -> Result<()> {
 
                 // CTRL-U to erase to the beginning of the line
                 if event.ctrl && event.code == key::U {
-                    info!("» clear-left");
+                    info!("» clear left");
                     let n = line.clear_left();
                     if n > 0 {
                         // move left by the number of elements removed
@@ -411,6 +411,34 @@ fn main() -> Result<()> {
                     continue;
                 }
 
+                // CTRL-A to move to the beginning of the line
+                if event.ctrl && event.code == key::A {
+                    info!("» seek left");
+                    let n = line.seek_left();
+                    if n > 0 {
+                        // move left by the distance seeked
+                        let text = format!("\x1b[{}D", n);
+                        unsafe {
+                            Error::check(Console::WriteConsoleA(stdout, text.as_bytes(), None, None))?;
+                        }
+                    }
+                    continue;
+                }
+
+                // CTRL-E to move to the end of the line
+                if event.ctrl && event.code == key::E {
+                    info!("» seek right");
+                    let n = line.seek_right();
+                    if n > 0 {
+                        // move right by the distance seeked
+                        let text = format!("\x1b[{}C", n);
+                        unsafe {
+                            Error::check(Console::WriteConsoleA(stdout, text.as_bytes(), None, None))?;
+                        }
+                    }
+                    continue;
+                }
+
                 // TODO: something better here, this is crappy. I should be checking characters
                 // based on their unicode categories, not this garbo
                 if !event.char.is_control() {