2 files changed, 89 insertions, 0 deletions
diff --git a/crates/shirabe-external-packages/src/composer/pcre/mod.rs b/crates/shirabe-external-packages/src/composer/pcre/mod.rs
new file mode 100644
index 0000000..5cc1656
--- /dev/null
+++ b/crates/shirabe-external-packages/src/composer/pcre/mod.rs
@@ -0,0 +1 @@
+pub mod preg;
diff --git a/crates/shirabe-external-packages/src/composer/pcre/preg.rs b/crates/shirabe-external-packages/src/composer/pcre/preg.rs
new file mode 100644
index 0000000..1b2d675
--- /dev/null
+++ b/crates/shirabe-external-packages/src/composer/pcre/preg.rs
@@ -0,0 +1,88 @@
+use indexmap::IndexMap;
+
+#[derive(Debug)]
+pub struct Preg;
+
+impl Preg {
+    pub fn is_match(pattern: &str, subject: &str) -> anyhow::Result<bool> {
+        todo!()
+    }
+
+    pub fn replace(pattern: &str, replacement: &str, subject: &str) -> anyhow::Result<String> {
+        todo!()
+    }
+
+    pub fn replace_callback<F>(pattern: &str, callback: F, subject: &str) -> anyhow::Result<String>
+    where
+        F: Fn(&IndexMap<String, String>) -> String,
+    {
+        todo!()
+    }
+
+    pub fn replace_with_count(
+        pattern: &str,
+        replacement: &str,
+        subject: &str,
+        count: &mut i64,
+    ) -> anyhow::Result<String> {
+        todo!()
+    }
+
+    pub fn split(pattern: &str, subject: &str) -> anyhow::Result<Vec<String>> {
+        todo!()
+    }
+
+    pub fn grep(pattern: &str, input: Vec<String>) -> anyhow::Result<Vec<String>> {
+        todo!()
+    }
+
+    /// Returns captures as a flat Vec indexed by group number (index 0 = full match).
+    pub fn is_match_strict_groups(
+        pattern: &str,
+        subject: &str,
+    ) -> Option<Vec<String>> {
+        todo!()
+    }
+
+    /// Returns named captures in an IndexMap.
+    pub fn is_match_named(
+        pattern: &str,
+        subject: &str,
+        matches: &mut IndexMap<String, String>,
+    ) -> anyhow::Result<bool> {
+        todo!()
+    }
+
+    /// Returns all matches; outer Vec indexed by group number, inner Vec by match occurrence.
+    pub fn is_match_all_strict_groups(
+        pattern: &str,
+        subject: &str,
+    ) -> Option<Vec<Vec<String>>> {
+        todo!()
+    }
+
+    /// Returns captures with byte offsets: IndexMap<group_name, Vec<(match_str, offset)>>.
+    pub fn is_match_all_with_offsets(
+        pattern: &str,
+        subject: &str,
+        matches: &mut IndexMap<String, Vec<(String, i64)>>,
+    ) -> anyhow::Result<bool> {
+        todo!()
+    }
+
+    /// Returns indexed captures as Vec (index 0 = full match) when pattern matches.
+    pub fn is_match_with_indexed_captures(
+        pattern: &str,
+        subject: &str,
+    ) -> anyhow::Result<Option<Vec<String>>> {
+        todo!()
+    }
+
+    /// Like is_match_strict_groups but returns named captures as IndexMap.
+    pub fn match_strict_groups(
+        pattern: &str,
+        subject: &str,
+    ) -> Option<IndexMap<String, String>> {
+        todo!()
+    }
+}