From dfed81a10b3de5f544ebe88a6e11bde9519d0cba Mon Sep 17 00:00:00 2001
From: trivernis <trivernis@protonmail.com>
Date: Tue, 12 Sep 2023 20:22:10 +0200
Subject: [PATCH] Add delete command

---
 book/src/generated/typable-cmd.md |  1 +
 helix-term/src/commands/typed.rs  | 31 +++++++++++++++++++++++++++++++
 helix-view/src/document.rs        | 15 +++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/book/src/generated/typable-cmd.md b/book/src/generated/typable-cmd.md
index 4b737893..600184fa 100644
--- a/book/src/generated/typable-cmd.md
+++ b/book/src/generated/typable-cmd.md
@@ -85,3 +85,4 @@
 | `:reset-diff-change`, `:diffget`, `:diffg` | Reset the diff change at the cursor position. |
 | `:clear-register` | Clear given register. If no argument is provided, clear all registers. |
 | `:redraw` | Clear and re-render the whole UI |
+| `:rm` | Deletes the file associated with the buffer |
diff --git a/helix-term/src/commands/typed.rs b/helix-term/src/commands/typed.rs
index abe6dd97..d425db3d 100644
--- a/helix-term/src/commands/typed.rs
+++ b/helix-term/src/commands/typed.rs
@@ -299,6 +299,30 @@ fn force_buffer_close_all(
     buffer_close_by_ids_impl(cx, &document_ids, true)
 }
 
+fn delete(
+    cx: &mut compositor::Context,
+    _args: &[Cow<str>],
+    event: PromptEvent,
+) -> anyhow::Result<()> {
+    if event != PromptEvent::Validate {
+        return Ok(());
+    }
+
+    cx.block_try_flush_writes()?;
+    let doc = doc_mut!(cx.editor);
+
+    if doc.path().is_none() {
+        bail!("cannot delete a buffer with no associated file on the disk");
+    }
+
+    let doc_id = view!(cx.editor).doc;
+
+    let future = doc.delete();
+    cx.jobs.add(Job::new(future));
+
+    buffer_close_by_ids_impl(cx, &[doc_id], true)
+}
+
 fn buffer_next(
     cx: &mut compositor::Context,
     _args: &[Cow<str>],
@@ -2430,6 +2454,13 @@ pub const TYPABLE_COMMAND_LIST: &[TypableCommand] = &[
         fun: open,
         signature: CommandSignature::all(completers::filename),
     },
+    TypableCommand {
+        name: "delete",
+        aliases: &["remove", "rm", "del"],
+        doc: "Deletes the file associated with the current buffer",
+        fun: delete,
+        signature: CommandSignature::none(),
+    },
     TypableCommand {
         name: "buffer-close",
         aliases: &["bc", "bclose"],
diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs
index bb61eaa6..45a83c3b 100644
--- a/helix-view/src/document.rs
+++ b/helix-view/src/document.rs
@@ -728,6 +728,21 @@ impl Document {
         }
     }
 
+    /// Deletes the file associated with this document
+    pub fn delete(&mut self) -> impl Future<Output = Result<(), anyhow::Error>> {
+        let path = self
+            .path()
+            .expect("Cannot delete with no path set!")
+            .clone();
+
+        async move {
+            use tokio::fs;
+            fs::remove_file(path).await?;
+
+            Ok(())
+        }
+    }
+
     /// If supported, returns the changes that should be applied to this document in order
     /// to format it nicely.
     // We can't use anyhow::Result here since the output of the future has to be