Blame unsaved files correctly (#26)

* Blame unsaved files correctly

* Display "Unsaved changes" on unsaved changes

* 0.4.0 -> 0.5.0

---------

Co-authored-by: Carl Thomé <carlthome@gmail.com>

package.json

@@ -3,7 +3,7 @@
   "displayName": "Git Line Blame",
   "description": "Display inline information in the text editor about the latest commit that edited the currently selected line",
   "publisher": "carlthome",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "license": "AGPL-3.0-only",
   "icon": "icon.png",
   "engines": {

src/extension.ts

@@ -29,15 +29,25 @@ export function activate(context: vscode.ExtensionContext) {
         activeEditor.selection.active.line
       );
 
-      const file = activeEditor.document.uri;
+      const { uri: file, isDirty } = activeEditor.document;
       const line = activeLine.lineNumber;
       const command = "git";
       const args = ["blame", "--porcelain", `-L${line + 1},+1`, file.fsPath];
+
+      if (isDirty) {
+        args.push("--content", "-");
+      }
+
       const workspaceFolder = vscode.workspace.getWorkspaceFolder(file);
       const workspaceFolderPath = workspaceFolder?.uri.fsPath;
       const options = { cwd: workspaceFolderPath };
       const cmd = cp.spawn(command, args, options);
 
+      if (isDirty) {
+        cmd.stdin.write(activeEditor.document.getText());
+        cmd.stdin.end();
+      }
+
       cmd.stdout.on("data", (data) => {
         const blame = data.toString();
 

src/lib.ts

@@ -55,10 +55,16 @@ export function formatMessage(fields: Record<string, string>): string {
     parseInt(fields["author-time"]) * 1000
   );
   const isUncommitted = fields["author"] === "Not Committed Yet";
-  const message = isUncommitted
-    ? "Not committed yet"
-    : `${fields.author}, ${elapsed} • ${fields.summary}`;
-  return message;
+  const isUnsaved = fields["author"] === "External file (--contents)";
+  const defaultMessage = `${fields.author}, ${elapsed} • ${fields.summary}`;
+
+  if (isUncommitted) {
+    return "Not committed yet";
+  } else if (isUnsaved) {
+    return "Unsaved changes";
+  } else {
+    return defaultMessage;
+  }
 }
 
 export function formatHoverMessage(fields: Record<string, string>): string {