2 files changed, 88 insertions, 0 deletions
diff --git a/crates/mozart-core/src/lib.rs b/crates/mozart-core/src/lib.rs
index 510257b..5383d9a 100644
--- a/crates/mozart-core/src/lib.rs
+++ b/crates/mozart-core/src/lib.rs
@@ -6,5 +6,7 @@ pub mod platform;
 pub mod suggest;
 pub mod validation;
 pub mod version_bumper;
+pub mod wildcard;
 
 pub use mozart_console_macros::console_format;
+pub use wildcard::matches_wildcard;
diff --git a/crates/mozart-core/src/wildcard.rs b/crates/mozart-core/src/wildcard.rs
new file mode 100644
index 0000000..9193549
--- /dev/null
+++ b/crates/mozart-core/src/wildcard.rs
@@ -0,0 +1,86 @@
+/// Match a package name against a wildcard pattern (case-insensitive).
+/// `*` matches any sequence of characters.
+pub fn matches_wildcard(name: &str, pattern: &str) -> bool {
+    let name_lower = name.to_lowercase();
+    let pattern_lower = pattern.to_lowercase();
+    let parts: Vec<&str> = pattern_lower.split('*').collect();
+
+    if parts.len() == 1 {
+        return name_lower == pattern_lower;
+    }
+
+    let mut pos = 0usize;
+    for (i, part) in parts.iter().enumerate() {
+        if part.is_empty() {
+            continue;
+        }
+        match name_lower[pos..].find(*part) {
+            Some(found) => {
+                if i == 0 && found != 0 {
+                    return false; // First segment must match at start
+                }
+                pos += found + part.len();
+            }
+            None => return false,
+        }
+    }
+
+    // If pattern doesn't end with *, name must be fully consumed
+    if !pattern_lower.ends_with('*') {
+        return pos == name_lower.len();
+    }
+
+    true
+}
+
+// ─── Tests ──────────────────────────────────────────────────────────────────
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_matches_wildcard_exact() {
+        assert!(matches_wildcard("psr/log", "psr/log"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_star_end() {
+        assert!(matches_wildcard("psr/log", "psr/*"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_star_start() {
+        assert!(matches_wildcard("psr/log", "*/log"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_star_middle() {
+        assert!(matches_wildcard("monolog/monolog", "mono*/mono*"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_no_match() {
+        assert!(!matches_wildcard("psr/log", "symfony/*"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_case_insensitive() {
+        assert!(matches_wildcard("PSR/Log", "psr/*"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_star_both_ends() {
+        assert!(matches_wildcard("monolog/monolog", "*log*"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_no_wildcard_mismatch() {
+        assert!(!matches_wildcard("psr/log", "psr/log2"));
+    }
+
+    #[test]
+    fn test_matches_wildcard_trailing_chars_fail() {
+        assert!(!matches_wildcard("psr/log", "psr/l"));
+    }
+}