From f98490f28bd784417ac3079599564726573c7702 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Thu, 14 May 2026 23:39:36 +0900
Subject: feat(port): port ClassMapGenerator.php

---
 crates/shirabe-php-shim/src/lib.rs                 |  4 ++
 crates/shirabe/src/autoload/class_map_generator.rs | 81 ++++++++++++++++++++++
 2 files changed, 85 insertions(+)

diff --git a/crates/shirabe-php-shim/src/lib.rs b/crates/shirabe-php-shim/src/lib.rs
index 086a221..27857a5 100644
--- a/crates/shirabe-php-shim/src/lib.rs
+++ b/crates/shirabe-php-shim/src/lib.rs
@@ -271,6 +271,10 @@ impl RarEntry {
     }
 }
 
+pub fn var_export(_value: &PhpMixed, _return: bool) -> String {
+    todo!()
+}
+
 #[derive(Debug)]
 pub struct RarArchive;
 
diff --git a/crates/shirabe/src/autoload/class_map_generator.rs b/crates/shirabe/src/autoload/class_map_generator.rs
index df2ebd3..9a3fc0a 100644
--- a/crates/shirabe/src/autoload/class_map_generator.rs
+++ b/crates/shirabe/src/autoload/class_map_generator.rs
@@ -1 +1,82 @@
 //! ref: composer/src/Composer/Autoload/ClassMapGenerator.php
+
+use indexmap::IndexMap;
+
+use shirabe_external_packages::composer::class_map_generator::class_map_generator::ClassMapGenerator as ExternalClassMapGenerator;
+use shirabe_external_packages::composer::class_map_generator::file_list::FileList;
+use shirabe_php_shim::PhpMixed;
+
+use crate::io::io_interface::IOInterface;
+
+#[derive(Debug)]
+pub struct ClassMapGenerator;
+
+impl ClassMapGenerator {
+    pub fn dump(dirs: Vec<String>, file: &str) -> anyhow::Result<()> {
+        let mut maps: IndexMap<String, String> = IndexMap::new();
+        for dir in dirs {
+            maps.extend(ClassMapGenerator::create_map(
+                PhpMixed::String(dir),
+                None,
+                None,
+                None,
+                None,
+                &mut IndexMap::new(),
+            )?);
+        }
+        let maps_php = PhpMixed::Array(
+            maps.into_iter()
+                .map(|(k, v)| (k, Box::new(PhpMixed::String(v))))
+                .collect(),
+        );
+        std::fs::write(file, format!("<?php return {};", shirabe_php_shim::var_export(&maps_php, true)))?;
+        Ok(())
+    }
+
+    pub fn create_map(
+        path: PhpMixed,
+        excluded: Option<String>,
+        io: Option<Box<dyn IOInterface>>,
+        namespace: Option<String>,
+        autoload_type: Option<String>,
+        scanned_files: &mut IndexMap<String, bool>,
+    ) -> anyhow::Result<IndexMap<String, String>> {
+        let generator = ExternalClassMapGenerator::new(vec!["php".to_string(), "inc".to_string(), "hh".to_string()]);
+        let mut file_list = FileList::new();
+        file_list.files = scanned_files.clone();
+        generator.avoid_duplicate_scans(&file_list);
+
+        generator.scan_paths(path, excluded.as_deref(), autoload_type.as_deref().unwrap_or("classmap"), namespace.as_deref())?;
+
+        let class_map = generator.get_class_map();
+
+        *scanned_files = file_list.files;
+
+        if let Some(io) = &io {
+            for msg in class_map.get_psr_violations() {
+                io.write_error(&format!("<warning>{}</warning>", msg));
+            }
+
+            for (class, paths) in class_map.get_ambiguous_classes() {
+                if paths.len() > 1 {
+                    io.write_error(&format!(
+                        "<warning>Warning: Ambiguous class resolution, \"{}\" was found {}x: in \"{}\" and \"{}\", the first will be used.</warning>",
+                        class,
+                        paths.len() + 1,
+                        class_map.get_class_path(&class),
+                        paths.join("\", \""),
+                    ));
+                } else {
+                    io.write_error(&format!(
+                        "<warning>Warning: Ambiguous class resolution, \"{}\" was found in both \"{}\" and \"{}\", the first will be used.</warning>",
+                        class,
+                        class_map.get_class_path(&class),
+                        paths.join("\", \""),
+                    ));
+                }
+            }
+        }
+
+        Ok(class_map.get_map())
+    }
+}
-- 
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