1 files changed, 122 insertions, 0 deletions
diff --git a/crates/shirabe-symfony-console/src/style/output_style.rs b/crates/shirabe-symfony-console/src/style/output_style.rs
new file mode 100644
index 00000000..17c9489e
--- /dev/null
+++ b/crates/shirabe-symfony-console/src/style/output_style.rs
@@ -0,0 +1,122 @@
+//! ref: composer/vendor/symfony/console/Style/OutputStyle.php
+
+use crate::formatter::OutputFormatterInterface;
+use crate::helper::ProgressBar;
+use crate::output::ConsoleOutputInterface;
+use crate::output::OutputInterface;
+use crate::output::output_interface::OUTPUT_NORMAL;
+
+/// Decorates output to add console style guide helpers.
+#[derive(Debug)]
+pub struct OutputStyle {
+    output: std::rc::Rc<std::cell::RefCell<dyn OutputInterface>>,
+}
+
+impl OutputStyle {
+    pub fn new(output: std::rc::Rc<std::cell::RefCell<dyn OutputInterface>>) -> Self {
+        Self { output }
+    }
+
+    pub fn create_progress_bar(&self, max: i64) -> ProgressBar {
+        ProgressBar::new(self.output.clone(), max, 1.0 / 25.0)
+    }
+
+    pub fn new_line(&self, count: i64) {
+        self.output.borrow().write(
+            &[shirabe_php_shim::str_repeat(
+                shirabe_php_shim::PHP_EOL,
+                count as usize,
+            )],
+            false,
+            OUTPUT_NORMAL,
+        );
+    }
+
+    pub(crate) fn get_error_output(&self) -> std::rc::Rc<std::cell::RefCell<dyn OutputInterface>> {
+        // PHP checks `$this->output instanceof ConsoleOutputInterface`; this requires
+        // runtime type information that the OutputInterface trait object lacks.
+        if !Self::is_console_output_interface(&self.output) {
+            return self.output.clone();
+        }
+
+        Self::as_console_output_interface(&self.output)
+            .unwrap()
+            .get_error_output()
+    }
+
+    fn is_console_output_interface(
+        output: &std::rc::Rc<std::cell::RefCell<dyn OutputInterface>>,
+    ) -> bool {
+        // ConsoleOutput is the only OutputInterface implementor that also implements
+        // ConsoleOutputInterface, so `instanceof ConsoleOutputInterface` reduces to this downcast.
+        shirabe_php_shim::AsAny::as_any(&*output.borrow())
+            .downcast_ref::<crate::output::console_output::ConsoleOutput>()
+            .is_some()
+    }
+
+    /// PHP casts to `ConsoleOutputInterface`; `ConsoleOutput` being its only implementor, a
+    /// borrow of the concrete type serves as the cast result.
+    fn as_console_output_interface(
+        output: &std::rc::Rc<std::cell::RefCell<dyn OutputInterface>>,
+    ) -> Option<std::cell::Ref<'_, crate::output::console_output::ConsoleOutput>> {
+        std::cell::Ref::filter_map(output.borrow(), |output| {
+            output
+                .as_any()
+                .downcast_ref::<crate::output::console_output::ConsoleOutput>()
+        })
+        .ok()
+    }
+}
+
+impl OutputInterface for OutputStyle {
+    fn write(&self, messages: &[String], newline: bool, options: i64) {
+        self.output.borrow().write(messages, newline, options);
+    }
+
+    fn writeln(&self, messages: &[String], options: i64) {
+        self.output.borrow().writeln(messages, options);
+    }
+
+    fn set_verbosity(&self, level: i64) {
+        self.output.borrow().set_verbosity(level);
+    }
+
+    fn get_verbosity(&self) -> i64 {
+        self.output.borrow().get_verbosity()
+    }
+
+    fn is_quiet(&self) -> bool {
+        self.output.borrow().is_quiet()
+    }
+
+    fn is_verbose(&self) -> bool {
+        self.output.borrow().is_verbose()
+    }
+
+    fn is_very_verbose(&self) -> bool {
+        self.output.borrow().is_very_verbose()
+    }
+
+    fn is_debug(&self) -> bool {
+        self.output.borrow().is_debug()
+    }
+
+    fn set_decorated(&self, decorated: bool) {
+        self.output.borrow().set_decorated(decorated);
+    }
+
+    fn is_decorated(&self) -> bool {
+        self.output.borrow().is_decorated()
+    }
+
+    fn set_formatter(
+        &self,
+        formatter: std::rc::Rc<std::cell::RefCell<dyn OutputFormatterInterface>>,
+    ) {
+        self.output.borrow().set_formatter(formatter);
+    }
+
+    fn get_formatter(&self) -> std::rc::Rc<std::cell::RefCell<dyn OutputFormatterInterface>> {
+        self.output.borrow().get_formatter()
+    }
+}