enh: ignore filename without a single han

Signed-off-by: wxiwnd <wxiwnd@outlook.com>

Author: wxiwnd

Cargo.lock

@@ -4,4 +4,5 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-ib-pinyin = "0.2.5"
+ib-pinyin = "0.2.5"
+regex = "1.11.1"

Cargo.toml

@@ -13,14 +13,16 @@ fn main() {
     .pinyin_notations(PinyinNotation::Ascii | PinyinNotation::AsciiFirstLetter)
     .build();
 
+    let han_re = regex::Regex::new(r"\p{Han}").unwrap();
+
     let mut results: Vec<String> = Vec::new();
     // Read current location
     if let Ok(entries) = std::fs::read_dir(".") {
         for entry in entries.flatten() {
                 let path = entry.path();
                 if let Some(file_name) = path.file_name() {
                     if let Some(file_name_str) = file_name.to_str() {
-                        if matcher.is_match(file_name_str) {
+                        if matcher.is_match(file_name_str) && han_re.is_match(file_name_str) {
                             results.push(file_name_str.to_string());
                         }
                     }