fix: path handling for windows compatibility

Using gix::path::realpath() provides an alternative means of getting an
absolute path, but without adding the extra rigamarole to the front of
paths that std::Path::canonicalize() adds on Windows.

Refs: #273

Author: jpgrayson

src/cmd/import.rs

@@ -230,7 +230,7 @@ fn run(matches: &clap::ArgMatches) -> Result<()> {
     let source_path = if matches.get_flag("url") {
         None
     } else if let Some(path) = matches.get_one::<PathBuf>("source") {
-        let abs_path = path.canonicalize()?;
+        let abs_path = gix::path::realpath(path)?;
         Some(abs_path)
     } else {
         None

src/hook.rs

@@ -55,7 +55,7 @@ pub(crate) fn run_pre_commit_hook(repo: &gix::Repository, use_editor: bool) -> R
         return Ok(false);
     }
 
-    let mut hook_command = std::process::Command::new(hook_path.canonicalize()?);
+    let mut hook_command = std::process::Command::new(gix::path::realpath(hook_path)?);
     let workdir = repo
         .work_dir()
         .expect("should not get this far with a bare repo");
@@ -118,7 +118,7 @@ pub(crate) fn run_commit_msg_hook<'repo>(
 
     // TODO: when git runs this hook, it only sets GIT_INDEX_FILE and sometimes
     // GIT_EDITOR. So author and committer vars are not clearly required.
-    let mut hook_command = std::process::Command::new(hook_path.canonicalize()?);
+    let mut hook_command = std::process::Command::new(gix::path::realpath(hook_path)?);
     hook_command.env("GIT_INDEX_FILE", &index_path);
     if !use_editor {
         hook_command.env("GIT_EDITOR", ":");

src/stupid/mod.rs

@@ -99,12 +99,15 @@ impl<'repo, 'index> StupidContext<'repo, 'index> {
             .work_dir
             .expect("work_dir is required for this command");
         command.current_dir(work_dir);
+        let cwd = std::env::current_dir()?;
+        let realpath =
+            |path| gix::path::realpath_opts(path, cwd.as_path(), gix::path::realpath::MAX_SYMLINKS);
         if let Some(git_dir) = self.git_dir {
-            command.env("GIT_DIR", git_dir.canonicalize()?);
+            command.env("GIT_DIR", realpath(git_dir)?);
         }
-        command.env("GIT_WORK_TREE", work_dir.canonicalize()?);
+        command.env("GIT_WORK_TREE", realpath(work_dir)?);
         if let Some(index_path) = self.index_path {
-            command.env("GIT_INDEX_FILE", index_path.canonicalize()?);
+            command.env("GIT_INDEX_FILE", realpath(index_path)?);
         }
         Ok(command)
     }