feat(clafrica): allow user specified characters

Unlike (#56) who included whitespaces by default, now the user can specify some additional characters that should be included in the cursor.
!help

CHANGELOG.md

@@ -9,9 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 - Implement the auto capitalization. [(#56)](https://github.com/pythonbrad/clafrica/pull/56)
+- Allow user specified characters.
 
 ### Fixed
-- Allowed whitespaces usage. [(#63)](https://github.com/pythonbrad/clafrica/pull/63)
 - Improve the pause/resume way via double pressing of CTRL key. [(#54)](https://github.com/pythonbrad/clafrica/pull/54)
 - Drop function key F1-12 which was reserved for special purposes. [(#62)](https://github.com/pythonbrad/clafrica/pull/62)
 

clafrica/data/test.toml

@@ -7,6 +7,7 @@ description = "Test code for testing purpose."
 [core]
 buffer_size = 128
 auto_capitalize = true
+allow_chars = [ "\t" ]
 
 [data]
 af       =   "ɑ"

clafrica/src/config.rs

@@ -12,6 +12,7 @@ pub struct Config {
 pub struct CoreConfig {
     pub buffer_size: usize,
     pub auto_capitalize: bool,
+    pub allow_chars: Option<Vec<char>>,
 }
 
 #[derive(Deserialize, Debug, Clone)]
@@ -116,6 +117,7 @@ mod tests {
 
         let conf = Config::from_file(Path::new("./data/config_sample.toml")).unwrap();
         assert_eq!(conf.core.clone().unwrap().buffer_size, 12);
+        assert_eq!(conf.core.clone().unwrap().allow_chars, None);
         assert!(!conf.core.clone().unwrap().auto_capitalize);
 
         let data = conf.extract_data();

clafrica/src/lib.rs

@@ -19,7 +19,10 @@ pub fn run(config: config::Config, mut frontend: impl Frontend) -> Result<(), io
             .map(|(k, v)| [k.as_str(), v.as_str()])
             .collect(),
     );
-    let mut cursor = text_buffer::Cursor::new(map, config.core.map(|e| e.buffer_size).unwrap_or(8));
+
+    let mut cursor = text_buffer::Cursor::new(map, config.core.as_ref().map(|e| e.buffer_size).unwrap_or(8));
+
+    let allowed_chars = config.core.map(|e| e.allow_chars.unwrap_or_default()).unwrap_or_default();
 
     let mut keyboard = Enigo::new();
 
@@ -61,7 +64,8 @@ pub fn run(config: config::Config, mut frontend: impl Frontend) -> Result<(), io
     for event in rx.iter() {
         let character = event.name.and_then(|s| s.chars().next());
         let is_valid = character
-            .map(|c| c.is_alphanumeric() || c.is_ascii_punctuation() || c.is_whitespace())
+            .as_ref()
+            .map(|c| c.is_alphanumeric() || c.is_ascii_punctuation() || allowed_chars.contains(c))
             .unwrap_or(false);
 
         match event.event_type {