forked from mirrors/jj
jj resolve: option to parse conflict markers + tests
If this new option is not specified, we start with empty output file and trust the merge tool did a complete merge no matter what the file contains. Includes tests.
This commit is contained in:
Ilya Grigoriev
parent
3e86baa7f1
commit
d6c1b0bc9c
2 changed files with 182 additions and 19 deletions
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@ -24,6 +24,7 @@ use itertools::Itertools;
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use jujutsu_lib::backend::{TreeId, TreeValue};
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use jujutsu_lib::conflicts::{
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describe_conflict, extract_file_conflict_as_single_hunk, materialize_merge_result,
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update_conflict_from_content,
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};
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use jujutsu_lib::gitignore::GitIgnoreFile;
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use jujutsu_lib::matchers::EverythingMatcher;
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@ -147,6 +148,8 @@ fn set_readonly_recursively(path: &Path) -> Result<(), std::io::Error> {
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}
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}
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// TODO: Rearrange the functions. This should be on the bottom, options should
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// be on the top.
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pub fn run_mergetool(
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ui: &mut Ui,
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tree: &Tree,
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@ -182,16 +185,20 @@ pub fn run_mergetool(
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});
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};
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let mut materialized_conflict: Vec<u8> = vec![];
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let editor = get_merge_tool_from_settings(ui)?;
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let initial_output_content: Vec<u8> = if editor.merge_tool_edits_conflict_markers {
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let mut materialized_conflict = vec![];
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materialize_merge_result(&content, &mut materialized_conflict)
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.expect("Writing to an in-memory buffer should never fail");
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let materialized_conflict = materialized_conflict;
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materialized_conflict
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} else {
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vec![]
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};
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let files: HashMap<&str, _> = maplit::hashmap! {
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"base" => content.removes.pop().unwrap_or_default(),
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"right" => content.adds.pop().unwrap_or_default(),
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"left" => content.adds.pop().unwrap_or_default(),
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"output" => materialized_conflict.clone(),
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"output" => initial_output_content.clone(),
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};
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let temp_dir = tempfile::Builder::new()
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@ -219,7 +226,6 @@ pub fn run_mergetool(
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.collect();
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let paths = paths?;
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let editor = get_merge_tool_from_settings(ui)?;
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let args = interpolate_mergetool_filename_patterns(&editor.merge_args, &paths);
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let args_str = args
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.iter()
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@ -242,21 +248,32 @@ pub fn run_mergetool(
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}
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let output_file_contents: Vec<u8> = std::fs::read(paths.get("output").unwrap())?;
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if output_file_contents.is_empty() || output_file_contents == materialized_conflict {
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if output_file_contents.is_empty() || output_file_contents == initial_output_content {
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return Err(ConflictResolveError::EmptyOrUnchanged);
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}
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// TODO: parse any remaining conflicts (done in followup commit)
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let mut new_tree_value: Option<TreeValue> = None;
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if editor.merge_tool_edits_conflict_markers {
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if let Some(new_conflict_id) = update_conflict_from_content(
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tree.store(),
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repo_path,
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&conflict_id,
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output_file_contents.as_slice(),
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)? {
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new_tree_value = Some(TreeValue::Conflict(new_conflict_id));
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}
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}
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let new_tree_value = new_tree_value.unwrap_or({
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let new_file_id = tree
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.store()
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.write_file(repo_path, &mut File::open(paths.get("output").unwrap())?)?;
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let mut tree_builder = tree.store().tree_builder(tree.id().clone());
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tree_builder.set(
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repo_path.clone(),
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TreeValue::File {
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id: new_file_id,
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executable: false,
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},
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);
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}
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});
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let mut tree_builder = tree.store().tree_builder(tree.id().clone());
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tree_builder.set(repo_path.clone(), new_tree_value);
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Ok(tree_builder.write_tree())
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}
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@ -380,6 +397,17 @@ struct MergeTool {
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/// strings to be substituted.
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#[serde(default)]
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pub merge_args: Vec<String>,
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/// If false (default), the `$output` file starts out empty and is accepted
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/// as a full conflict resolution as-is by `jj` after the merge tool is
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/// done with it. If true, the `$output` file starts out with the
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/// contents of the conflict, with JJ's conflict markers. After the
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/// merge tool is done, any remaining conflict markers in the
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/// file parsed and taken to mean that the conflict was only partially
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/// resolved.
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// TODO: Instead of a boolean, this could denote the flavor of conflict markers to put in
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// the file (`jj` or `diff3` for example).
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#[serde(default)]
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pub merge_tool_edits_conflict_markers: bool,
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}
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impl MergeTool {
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@ -388,6 +416,7 @@ impl MergeTool {
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program: program.to_owned(),
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edit_args: vec![],
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merge_args: vec![],
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merge_tool_edits_conflict_markers: false,
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}
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}
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}
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@ -75,8 +75,35 @@ fn test_resolution() {
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"###);
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let editor_script = test_env.set_up_fake_editor();
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// Check that output file starts out empty and resolve the conflict
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std::fs::write(&editor_script, "expect\n\0write\nresolution\n").unwrap();
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test_env.jj_cmd_success(&repo_path, &["resolve", "file"]);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@r###"
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Resolved conflict in file:
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1 1: <<<<<<<resolution
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2 : %%%%%%%
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3 : -base
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4 : +a
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5 : +++++++
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6 : b
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7 : >>>>>>>
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"###);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["status"]),
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@r###"
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Parent commit: 77c5ed9eda54 a
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Working copy : 665f83829a6a conflict
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Working copy changes:
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M file
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"###);
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// Check that the output file starts with conflict markers if
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// `merge-tool-edits-conflict-markers=true`
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@"");
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std::fs::write(
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editor_script,
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&editor_script,
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"expect
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<<<<<<<
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%%%%%%%
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@ -90,7 +117,15 @@ resolution
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",
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)
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.unwrap();
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test_env.jj_cmd_success(&repo_path, &["resolve", "file"]);
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test_env.jj_cmd_success(
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&repo_path,
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&[
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"resolve",
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"--config-toml",
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"merge-tools.fake-editor.merge-tool-edits-conflict-markers=true",
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"file",
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],
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);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@r###"
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Resolved conflict in file:
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@ -102,6 +137,105 @@ resolution
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6 : b
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7 : >>>>>>>
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"###);
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// Check that if merge tool leaves conflict markers in output file and
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// `merge-tool-edits-conflict-markers=true`, these markers are properly parsed.
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@"");
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std::fs::write(
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&editor_script,
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"expect
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<<<<<<<
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%%%%%%%
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-base
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+a
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+++++++
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b
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>>>>>>>
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\0write
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<<<<<<<
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%%%%%%%
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-some
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+fake
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+++++++
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conflict
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>>>>>>>
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",
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)
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.unwrap();
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test_env.jj_cmd_success(
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&repo_path,
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&[
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"resolve",
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"--config-toml",
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"merge-tools.fake-editor.merge-tool-edits-conflict-markers=true",
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"file",
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],
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);
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// Note the "Modified" below
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@r###"
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Modified conflict in file:
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1 1: <<<<<<<
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2 2: %%%%%%%
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3 3: -basesome
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4 4: +afake
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5 5: +++++++
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6 6: bconflict
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7 7: >>>>>>>
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"###);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["status"]),
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@r###"
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Parent commit: 77c5ed9eda54 a
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Working copy : cbd3d65d2612 conflict
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Working copy changes:
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M file
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There are unresolved conflicts at these paths:
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file
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"###);
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// Check that if merge tool leaves conflict markers in output file but
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// `merge-tool-edits-conflict-markers=false` or is not specified,
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// `jj` considers the conflict resolved.
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test_env.jj_cmd_success(&repo_path, &["undo"]);
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@"");
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std::fs::write(
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&editor_script,
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"expect
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\0write
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<<<<<<<
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%%%%%%%
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-some
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+fake
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+++++++
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conflict
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>>>>>>>
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",
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)
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.unwrap();
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test_env.jj_cmd_success(&repo_path, &["resolve", "file"]);
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// Note the "Resolved" below
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["diff", "-r", "conflict"]),
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@r###"
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Resolved conflict in file:
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1 1: <<<<<<<
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2 2: %%%%%%%
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3 3: -basesome
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4 4: +afake
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5 5: +++++++
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6 6: bconflict
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7 7: >>>>>>>
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"###);
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// No "there are unresolved conflicts..." message below
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insta::assert_snapshot!(test_env.jj_cmd_success(&repo_path, &["status"]),
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@r###"
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Parent commit: 77c5ed9eda54 a
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Working copy : d5b735448648 conflict
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Working copy changes:
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M file
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"###);
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}
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fn check_resolve_produces_input_file(
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