1 files changed, 34 insertions, 0 deletions
diff --git a/src/util.rs b/src/util.rs
index f3e104b..c641ea6 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -2,6 +2,7 @@
 
 use log::debug;
 use std::net::TcpStream;
+use std::path::{Path, PathBuf};
 
 const SSH_PORT: i32 = 22;
 
@@ -15,3 +16,36 @@ pub fn wait_for_ssh(name: &str) {
         }
     }
 }
+
+/// Expand a ~/ at the beginning of a Path to refer to the home directory.
+pub fn expand_tilde(path: &Path) -> PathBuf {
+    if path.starts_with("~/") {
+        if let Some(home) = std::env::var_os("HOME") {
+            let mut expanded = PathBuf::from(home);
+            for comp in path.components().skip(1) {
+                expanded.push(comp);
+            }
+            expanded
+        } else {
+            path.to_path_buf()
+        }
+    } else {
+        path.to_path_buf()
+    }
+}
+
+pub fn expand_optional_pathbuf(maybe_path: &mut Option<PathBuf>) {
+    if let Some(path) = maybe_path {
+        *maybe_path = Some(expand_tilde(path));
+    }
+}
+
+pub fn expand_optional_pathbufs(maybe_paths: &mut Option<Vec<PathBuf>>) {
+    if let Some(paths) = maybe_paths {
+        let mut expanded = vec![];
+        for path in paths {
+            expanded.push(expand_tilde(&path));
+        }
+        *maybe_paths = Some(expanded);
+    }
+}