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diff_edit: mark "before" directory readonly to clarify to user

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Changes to the "before" side of the diff will have no effect, so let's
clarify that by marking it readonly. At least Meld checks the
permissions and shows in the UI that the left side is readonly.
This commit is contained in:
Martin von Zweigbergk 2020-12-26 10:34:58 -08:00
parent b6192a7ed5
commit 3280d75ff4
1 changed files with 13 additions and 2 deletions
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15
src/diff_edit.rs
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@ -19,7 +19,7 @@ use jj_lib::tree::Tree;
use jj_lib::tree_builder::TreeBuilder;
use jj_lib::trees::merge_trees;
use jj_lib::working_copy::{CheckoutError, TreeState};
use std::path::PathBuf;
use std::path::{Path, PathBuf};
use std::process::Command;
use std::sync::Arc;
use tempfile::tempdir;
@ -80,6 +80,17 @@ fn check_out(
Ok(tree_state)
}
fn set_readonly_recursively(path: &Path) {
if path.is_dir() {
for entry in path.read_dir().unwrap() {
set_readonly_recursively(&entry.unwrap().path());
}
}
let mut perms = std::fs::metadata(path).unwrap().permissions();
perms.set_readonly(true);
std::fs::set_permissions(path, perms).unwrap();
}
pub fn edit_diff(left_tree: &Tree, right_tree: &Tree) -> Result<TreeId, DiffEditError> {
// First create partial Trees of only the subset of the left and right trees
// that affect files changed between them.
@ -112,7 +123,7 @@ pub fn edit_diff(left_tree: &Tree, right_tree: &Tree) -> Result<TreeId, DiffEdit
left_state_dir,
left_partial_tree_id,
)?;
// TODO: mark left dir readonly
set_readonly_recursively(&left_wc_dir);
let mut right_tree_state = check_out(
store.clone(),
right_wc_dir.clone(),