Allow piping from stdin into a buffer on startup (#996)

* Allow piping from stdin into a buffer on startup

* Refactor

* Don't allow piping into new buffer on macOS

* Update helix-term/src/application.rs

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

* Update helix-term/src/application.rs

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

* Fix

Co-authored-by: Blaž Hrastnik <blaz@mxxn.io>

1 files changed, 13 insertions, 4 deletions

diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs
index 631dcf0c..7650d217 100644
--- a/helix-view/src/editor.rs
+++ b/helix-view/src/editor.rs
@@ -9,6 +9,7 @@ use crate::{
 use futures_util::future;
 use std::{
     collections::BTreeMap,
+    io::stdin,
     path::{Path, PathBuf},
     pin::Pin,
     sync::Arc,
@@ -314,16 +315,24 @@ impl Editor {
         self._refresh();
     }
 
-    pub fn new_file(&mut self, action: Action) -> DocumentId {
+    fn new_file_from_document(&mut self, action: Action, mut document: Document) -> DocumentId {
         let id = DocumentId(self.next_document_id);
         self.next_document_id += 1;
-        let mut doc = Document::default();
-        doc.id = id;
-        self.documents.insert(id, doc);
+        document.id = id;
+        self.documents.insert(id, document);
         self.switch(id, action);
         id
     }
 
+    pub fn new_file(&mut self, action: Action) -> DocumentId {
+        self.new_file_from_document(action, Document::default())
+    }
+
+    pub fn new_file_from_stdin(&mut self, action: Action) -> Result<DocumentId, Error> {
+        let (rope, encoding) = crate::document::from_reader(&mut stdin(), None)?;
+        Ok(self.new_file_from_document(action, Document::from(rope, Some(encoding))))
+    }
+
     pub fn open(&mut self, path: PathBuf, action: Action) -> Result<DocumentId, Error> {
         let path = helix_core::path::get_canonicalized_path(&path)?;