1 files changed, 41 insertions, 0 deletions
diff --git a/lldb/tools/lldb-dap/src-ts/utils.ts b/lldb/tools/lldb-dap/src-ts/utils.ts
new file mode 100644
index 0000000..efebe0b
--- /dev/null
+++ b/lldb/tools/lldb-dap/src-ts/utils.ts
@@ -0,0 +1,41 @@
+import * as os from "os";
+import * as path from "path";
+
+/**
+ * Expands the character `~` to the user's home directory
+ */
+export function expandUser(file_path: string): string {
+  if (os.platform() == "win32") {
+    return file_path;
+  }
+
+  if (!file_path) {
+    return "";
+  }
+
+  if (!file_path.startsWith("~")) {
+    return file_path;
+  }
+
+  const path_len = file_path.length;
+  if (path_len == 1) {
+    return os.homedir();
+  }
+
+  if (file_path.charAt(1) == path.sep) {
+    return path.join(os.homedir(), file_path.substring(1));
+  }
+
+  const sep_index = file_path.indexOf(path.sep);
+  const user_name_end = sep_index == -1 ? file_path.length : sep_index;
+  const user_name = file_path.substring(1, user_name_end);
+  try {
+    if (user_name == os.userInfo().username) {
+      return path.join(os.homedir(), file_path.substring(user_name_end));
+    }
+  } catch (err) {
+    return file_path;
+  }
+
+  return file_path;
+}