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config: forward write_config_value_to_file() to ConfigLayer::set_value()

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write_config_value_to_file() will be inlined to callers.
This commit is contained in:
Yuya Nishihara 2024-12-12 15:53:31 +09:00
parent cf6711437f
commit 4d67d3eeca
2 changed files with 28 additions and 52 deletions
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66
cli/src/config.rs
View file

@ -426,23 +426,20 @@ pub fn parse_config_args(toml_strs: &[ConfigArg]) -> Result<Vec<ConfigLayer>, Co
.try_collect()
}
fn read_config(path: &Path) -> Result<toml_edit::ImDocument<String>, CommandError> {
let config_toml = std::fs::read_to_string(path).or_else(|err| {
match err.kind() {
fn load_config_file_or_empty(
source: ConfigSource,
path: &Path,
) -> Result<ConfigLayer, ConfigLoadError> {
match ConfigLayer::load_from_file(source, path.into()) {
Ok(layer) => Ok(layer),
Err(ConfigLoadError::Read(err)) if err.error.kind() == std::io::ErrorKind::NotFound => {
// If config doesn't exist yet, read as empty and we'll write one.
std::io::ErrorKind::NotFound => Ok("".to_string()),
_ => Err(user_error_with_message(
format!("Failed to read file {path}", path = path.display()),
err,
)),
let mut layer = ConfigLayer::empty(source);
layer.path = Some(path.into());
Ok(layer)
}
Err(err) => Err(err),
}
})?;
config_toml.parse().map_err(|err| {
user_error_with_message(
format!("Failed to parse file {path}", path = path.display()),
err,
)
})
}
fn write_config(path: &Path, doc: &toml_edit::DocumentMut) -> Result<(), CommandError> {
@ -459,43 +456,20 @@ pub fn write_config_value_to_file(
value: toml_edit::Value,
path: &Path,
) -> Result<(), CommandError> {
let mut doc = read_config(path)?.into_mut();
// Apply config value
let mut target_table = doc.as_table_mut();
let mut key_parts_iter = key.components();
let last_key_part = key_parts_iter.next_back().expect("key must not be empty");
for key_part in key_parts_iter {
target_table = target_table
.entry(key_part)
.or_insert_with(|| toml_edit::Item::Table(toml_edit::Table::new()))
.as_table_mut()
.ok_or_else(|| {
user_error(format!(
"Failed to set {key}: would overwrite non-table value with parent table"
))
})?;
}
// Error out if overwriting non-scalar value for key (table or array) with
// scalar.
match target_table.get(last_key_part) {
None | Some(toml_edit::Item::None | toml_edit::Item::Value(_)) => {}
Some(toml_edit::Item::Table(_) | toml_edit::Item::ArrayOfTables(_)) => {
return Err(user_error(format!(
"Failed to set {key}: would overwrite entire table"
)));
}
}
target_table[last_key_part] = toml_edit::Item::Value(value);
write_config(path, &doc)
// TODO: Load config layer by caller. Here we use a dummy source for now.
let mut layer = load_config_file_or_empty(ConfigSource::User, path)?;
layer
.set_value(key, value)
.map_err(|err| user_error_with_message(format!("Failed to set {key}"), err))?;
write_config(path, &layer.data)
}
pub fn remove_config_value_from_file(
key: &ConfigNamePathBuf,
path: &Path,
) -> Result<(), CommandError> {
let mut doc = read_config(path)?.into_mut();
// TODO: Load config layer by caller. Here we use a dummy source for now.
let mut doc = load_config_file_or_empty(ConfigSource::User, path)?.data;
// Find target table
let mut key_iter = key.components();

14
cli/tests/test_config_command.rs
View file

@ -578,9 +578,10 @@ fn test_config_set_type_mismatch() {
&repo_path,
&["config", "set", "--user", "test-table", "not-a-table"],
);
insta::assert_snapshot!(stderr, @r###"
Error: Failed to set test-table: would overwrite entire table
"###);
insta::assert_snapshot!(stderr, @r"
Error: Failed to set test-table
Caused by: Would overwrite entire table test-table
");
// But it's fine to overwrite arrays and inline tables
test_env.jj_cmd_success(
@ -617,9 +618,10 @@ fn test_config_set_nontable_parent() {
&repo_path,
&["config", "set", "--user", "test-nontable.foo", "test-val"],
);
insta::assert_snapshot!(stderr, @r###"
Error: Failed to set test-nontable.foo: would overwrite non-table value with parent table
"###);
insta::assert_snapshot!(stderr, @r"
Error: Failed to set test-nontable.foo
Caused by: Would overwrite non-table value with parent table test-nontable
");
}
#[test]