3 files changed, 242 insertions, 0 deletions
diff --git a/crates/utils/string_proc/src/lib.rs b/crates/utils/string_proc/src/lib.rs
new file mode 100644
index 0000000..1f24028
--- /dev/null
+++ b/crates/utils/string_proc/src/lib.rs
@@ -0,0 +1,48 @@
+pub mod macros;
+pub mod string_processer;
+
+#[cfg(test)]
+mod tests {
+    use crate::string_processer::StringProcesser;
+
+    #[test]
+    fn test_processer() {
+        let test_cases = vec![
+            ("brew_coffee", "brewCoffee"),
+            ("brew, coffee", "brewCoffee"),
+            ("brew-coffee", "brewCoffee"),
+            ("Brew.Coffee", "brewCoffee"),
+            ("bRewCofFee", "bRewCofFee"),
+            ("brewCoffee", "brewCoffee"),
+            ("b&rewCoffee", "brewCoffee"),
+            ("BrewCoffee", "brewCoffee"),
+            ("brew.coffee", "brewCoffee"),
+            ("Brew_Coffee", "brewCoffee"),
+            ("BREW COFFEE", "brewCoffee"),
+        ];
+
+        for (input, expected) in test_cases {
+            let processor = StringProcesser::from(input);
+            assert_eq!(
+                processor.to_camel_case(),
+                expected,
+                "Failed for input: '{}'",
+                input
+            );
+        }
+    }
+
+    #[test]
+    fn test_conversions() {
+        let processor = StringProcesser::from("brewCoffee");
+
+        assert_eq!(processor.to_upper_case(), "BREW COFFEE");
+        assert_eq!(processor.to_lower_case(), "brew coffee");
+        assert_eq!(processor.to_title_case(), "Brew Coffee");
+        assert_eq!(processor.to_dot_case(), "brew.coffee");
+        assert_eq!(processor.to_snake_case(), "brew_coffee");
+        assert_eq!(processor.to_kebab_case(), "brew-coffee");
+        assert_eq!(processor.to_pascal_case(), "BrewCoffee");
+        assert_eq!(processor.to_camel_case(), "brewCoffee");
+    }
+}
diff --git a/crates/utils/string_proc/src/macros.rs b/crates/utils/string_proc/src/macros.rs
new file mode 100644
index 0000000..9d85338
--- /dev/null
+++ b/crates/utils/string_proc/src/macros.rs
@@ -0,0 +1,63 @@
+#[macro_export]
+macro_rules! camel_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_camel_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! upper_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_upper_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! lower_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_lower_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! title_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_title_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! dot_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_dot_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! snake_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_snake_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! kebab_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_kebab_case()
+    }};
+}
+
+#[macro_export]
+macro_rules! pascal_case {
+    ($input:expr) => {{
+        use string_proc::string_processer::StringProcesser;
+        StringProcesser::from($input).to_pascal_case()
+    }};
+}
diff --git a/crates/utils/string_proc/src/string_processer.rs b/crates/utils/string_proc/src/string_processer.rs
new file mode 100644
index 0000000..6ad8768
--- /dev/null
+++ b/crates/utils/string_proc/src/string_processer.rs
@@ -0,0 +1,131 @@
+pub struct StringProcesser {
+    content: Vec<String>,
+}
+
+impl From<String> for StringProcesser {
+    fn from(value: String) -> Self {
+        Self {
+            content: Self::process_string(value),
+        }
+    }
+}
+
+impl From<&str> for StringProcesser {
+    fn from(value: &str) -> Self {
+        Self {
+            content: Self::process_string(value.to_string()),
+        }
+    }
+}
+
+impl StringProcesser {
+    /// Process the string into an intermediate format
+    fn process_string(input: String) -> Vec<String> {
+        let mut result = String::new();
+        let mut prev_space = false;
+
+        for c in input.chars() {
+            match c {
+                'a'..='z' | 'A'..='Z' | '0'..='9' => {
+                    result.push(c);
+                    prev_space = false;
+                }
+                '_' | ',' | '.' | '-' | ' ' => {
+                    if !prev_space {
+                        result.push(' ');
+                        prev_space = true;
+                    }
+                }
+                _ => {}
+            }
+        }
+
+        let mut processed = String::new();
+        let mut chars = result.chars().peekable();
+
+        while let Some(c) = chars.next() {
+            processed.push(c);
+            if let Some(&next) = chars.peek() {
+                if c.is_lowercase() && next.is_uppercase() {
+                    processed.push(' ');
+                }
+            }
+        }
+
+        processed
+            .to_lowercase()
+            .split_whitespace()
+            .map(|s| s.to_string())
+            .collect()
+    }
+
+    /// Convert to camelCase format (brewCoffee)
+    pub fn to_camel_case(&self) -> String {
+        let mut result = String::new();
+        for (i, word) in self.content.iter().enumerate() {
+            if i == 0 {
+                result.push_str(&word.to_lowercase());
+            } else {
+                let mut chars = word.chars();
+                if let Some(first) = chars.next() {
+                    result.push_str(&first.to_uppercase().collect::<String>());
+                    result.push_str(&chars.collect::<String>().to_lowercase());
+                }
+            }
+        }
+        result
+    }
+
+    /// Convert to PascalCase format (BrewCoffee)
+    pub fn to_pascal_case(&self) -> String {
+        let mut result = String::new();
+        for word in &self.content {
+            let mut chars = word.chars();
+            if let Some(first) = chars.next() {
+                result.push_str(&first.to_uppercase().collect::<String>());
+                result.push_str(&chars.collect::<String>().to_lowercase());
+            }
+        }
+        result
+    }
+
+    /// Convert to kebab-case format (brew-coffee)
+    pub fn to_kebab_case(&self) -> String {
+        self.content.join("-").to_lowercase()
+    }
+
+    /// Convert to snake_case format (brew_coffee)
+    pub fn to_snake_case(&self) -> String {
+        self.content.join("_").to_lowercase()
+    }
+
+    /// Convert to dot.case format (brew.coffee)
+    pub fn to_dot_case(&self) -> String {
+        self.content.join(".").to_lowercase()
+    }
+
+    /// Convert to Title Case format (Brew Coffee)
+    pub fn to_title_case(&self) -> String {
+        let mut result = String::new();
+        for word in &self.content {
+            let mut chars = word.chars();
+            if let Some(first) = chars.next() {
+                result.push_str(&first.to_uppercase().collect::<String>());
+                result.push_str(&chars.collect::<String>().to_lowercase());
+            }
+            result.push(' ');
+        }
+        result.pop();
+        result
+    }
+
+    /// Convert to lower case format (brew coffee)
+    pub fn to_lower_case(&self) -> String {
+        self.content.join(" ").to_lowercase()
+    }
+
+    /// Convert to UPPER CASE format (BREW COFFEE)
+    pub fn to_upper_case(&self) -> String {
+        self.content.join(" ").to_uppercase()
+    }
+}