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// SPDX-FileCopyrightText: 2026 Sébastien Helleu <flashcode@flashtux.org>
//
// SPDX-License-Identifier: GPL-3.0-or-later
//! Implementation of the `double-quotes` rule: check missing/extra double quotes.
use crate::checker::Checker;
use crate::diagnostic::{Diagnostic, Severity};
use crate::po::entry::Entry;
use crate::po::message::Message;
use crate::rules::rule::RuleChecker;
pub const DOUBLE_QUOTES: [char; 8] = [
'"', // U+0022: quotation mark
'«', // U+00AB: left pointing double angle quotation mark
'»', // U+00BB: right pointing double angle quotation mark
'“', // U+201C: left double quotation mark
'”', // U+201D: right double quotation mark
'„', // U+201E: double low quotation mark
'‟', // U+201F: double high-reversed-9 quotation mark
'＂', // U+FF02: fullwidth quotation mark
];
pub struct DoubleQuotesRule;
impl RuleChecker for DoubleQuotesRule {
fn name(&self) -> &'static str {
"double-quotes"
}
fn is_default(&self) -> bool {
true
}
fn is_check(&self) -> bool {
true
}
fn severity(&self) -> Severity {
Severity::Info
}
/// Check for missing or extra double quotes in the translation.
///
/// The following quotes are considered:
/// - quotation mark: '"' (U+0022)
/// - left pointing double angle quotation mark: '«' (U+00AB)
/// - right pointing double angle quotation mark: '»' (U+00BB)
/// - left double quotation mark: '“' (U+201C)
/// - right double quotation mark: '”' (U+201D)
/// - double low quotation mark: '„' (U+201E)
/// - double high-reversed-9 quotation mark: '‟' (U+201F)
/// - fullwidth quotation mark: '＂' (U+FF02)
///
/// Wrong entry:
/// ```text
/// msgid "this is a \"test\""
/// msgstr "ceci est un test"
/// ```
///
/// Correct entry:
/// ```text
/// msgid "this is a \"test\""
/// msgstr "ceci est un \"test\""
/// ```
///
/// Diagnostics reported with severity [`info`](Severity::Info):
/// - `missing double quotes (# / #)`
/// - `extra double quotes (# / #)`
fn check_msg(
&self,
checker: &Checker,
_entry: &Entry,
msgid: &Message,
msgstr: &Message,
) -> Vec<Diagnostic> {
let id_quotes: Vec<_> = msgid
.value
.match_indices(DOUBLE_QUOTES)
.map(|(idx, value)| (idx, idx + value.len()))
.collect();
let str_quotes: Vec<_> = msgstr
.value
.match_indices(DOUBLE_QUOTES)
.map(|(idx, value)| (idx, idx + value.len()))
.collect();
match id_quotes.len().cmp(&str_quotes.len()) {
std::cmp::Ordering::Greater => {
vec![
self.new_diag(
checker,
format!(
"missing double quotes ({} / {})",
id_quotes.len(),
str_quotes.len()
),
)
.with_msgs_hl(msgid, &id_quotes, msgstr, &str_quotes),
]
}
std::cmp::Ordering::Less => {
vec![
self.new_diag(
checker,
format!(
"extra double quotes ({} / {})",
id_quotes.len(),
str_quotes.len()
),
)
.with_msgs_hl(msgid, &id_quotes, msgstr, &str_quotes),
]
}
std::cmp::Ordering::Equal => vec![],
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{diagnostic::Diagnostic, rules::rule::Rules};
fn check_double_quotes(content: &str) -> Vec<Diagnostic> {
let mut checker = Checker::new(content.as_bytes());
let rules = Rules::new(vec![Box::new(DoubleQuotesRule {})]);
checker.do_all_checks(&rules);
checker.diagnostics
}
#[test]
fn test_no_double_quotes() {
let diags = check_double_quotes(
r#"
msgid "tested"
msgstr "testé"
"#,
);
assert!(diags.is_empty());
}
#[test]
fn test_double_quotes_ok() {
let diags = check_double_quotes(
r#"
msgid "this is a \"test\""
msgstr "ceci est un « test »"
"#,
);
assert!(diags.is_empty());
}
#[test]
fn test_double_quotes_error_noqa() {
let diags = check_double_quotes(
r#"
#, noqa:double-quotes
msgid "this is a \"test\""
msgstr "ceci est un test"
"#,
);
assert!(diags.is_empty());
}
#[test]
fn test_double_quotes_error() {
let diags = check_double_quotes(
r#"
msgid "this is a \"test\""
msgstr "ceci est un test"
msgid "this is a test"
msgstr "ceci est un \"test\""
"#,
);
assert_eq!(diags.len(), 2);
let diag = &diags[0];
assert_eq!(diag.severity, Severity::Info);
assert_eq!(diag.message, "missing double quotes (2 / 0)");
let diag = &diags[1];
assert_eq!(diag.severity, Severity::Info);
assert_eq!(diag.message, "extra double quotes (0 / 2)");
}
}