fix(sql): decode opened SQL files with charset fallback

src-tauri/src/commands/external_sql.rs

@@ -1,6 +1,8 @@
 use std::path::{Path, PathBuf};
 use std::sync::Mutex;
 
+use dbx_core::sql::decode_sql_file_bytes;
+
 #[tauri::command]
 pub fn pending_open_sql_files(state: tauri::State<'_, ExternalSqlOpenState>) -> Vec<String> {
     let cwd = std::env::current_dir().unwrap_or_else(|_| PathBuf::from("."));
@@ -64,7 +66,8 @@ pub fn read_external_sql_file_content(path: &Path) -> Result<String, String> {
     if !is_sql_file_path(path) {
         return Err("Only .sql files can be opened this way".to_string());
     }
-    std::fs::read_to_string(path).map_err(|e| format!("Failed to read SQL file: {e}"))
+    let bytes = std::fs::read(path).map_err(|e| format!("Failed to read SQL file: {e}"))?;
+    decode_sql_file_bytes(&bytes)
 }
 
 fn dedupe_paths(paths: Vec<String>) -> Vec<String> {
@@ -115,6 +118,17 @@ mod tests {
         assert_eq!(result.unwrap(), "select 1;");
     }
 
+    #[test]
+    fn reads_gbk_external_sql_file_content() {
+        let path = std::env::temp_dir().join(format!("dbx-test-{}.sql", uuid::Uuid::new_v4()));
+        std::fs::write(&path, b"select '\xD6\xD0\xCE\xC4';").unwrap();
+
+        let result = read_external_sql_file_content(&path);
+
+        let _ = std::fs::remove_file(&path);
+        assert_eq!(result.unwrap(), "select '中文';");
+    }
+
     #[test]
     fn rejects_external_non_sql_file_content() {
         let path = std::env::temp_dir().join(format!("dbx-test-{}.txt", uuid::Uuid::new_v4()));