build(ariadne): vendor clap

third_party/crates/anstyle-query-1.1.5/src/windows.rs

@@ -0,0 +1,79 @@
+//! Windows-specific style queries
+
+#[cfg(windows)]
+mod windows_console {
+    use std::os::windows::io::AsRawHandle;
+    use std::os::windows::io::RawHandle;
+
+    use windows_sys::Win32::Foundation::HANDLE;
+    use windows_sys::Win32::System::Console::CONSOLE_MODE;
+    use windows_sys::Win32::System::Console::ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+
+    fn enable_vt(handle: RawHandle) -> std::io::Result<()> {
+        unsafe {
+            let handle: HANDLE = handle as HANDLE;
+            if handle.is_null() {
+                return Err(std::io::Error::new(
+                    std::io::ErrorKind::BrokenPipe,
+                    "console is detached",
+                ));
+            }
+
+            let mut dwmode: CONSOLE_MODE = 0;
+            if windows_sys::Win32::System::Console::GetConsoleMode(handle, &mut dwmode) == 0 {
+                return Err(std::io::Error::last_os_error());
+            }
+
+            dwmode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+            if windows_sys::Win32::System::Console::SetConsoleMode(handle, dwmode) == 0 {
+                return Err(std::io::Error::last_os_error());
+            }
+
+            Ok(())
+        }
+    }
+
+    pub(crate) fn enable_virtual_terminal_processing() -> std::io::Result<()> {
+        let stdout = std::io::stdout();
+        let stdout_handle = stdout.as_raw_handle();
+        let stderr = std::io::stderr();
+        let stderr_handle = stderr.as_raw_handle();
+
+        enable_vt(stdout_handle)?;
+        if stdout_handle != stderr_handle {
+            enable_vt(stderr_handle)?;
+        }
+
+        Ok(())
+    }
+
+    #[inline]
+    pub(crate) fn enable_ansi_colors() -> Option<bool> {
+        Some(
+            enable_virtual_terminal_processing()
+                .map(|_| true)
+                .unwrap_or(false),
+        )
+    }
+}
+
+#[cfg(not(windows))]
+mod windows_console {
+    #[inline]
+    pub(crate) fn enable_ansi_colors() -> Option<bool> {
+        None
+    }
+}
+
+/// Enable ANSI escape codes ([`ENABLE_VIRTUAL_TERMINAL_PROCESSING`](https://learn.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences#output-sequences))
+///
+/// For non-windows systems, returns `None`
+pub fn enable_ansi_colors() -> Option<bool> {
+    windows_console::enable_ansi_colors()
+}
+
+/// Raw `ENABLE_VIRTUAL_TERMINAL_PROCESSING` on stdout/stderr
+#[cfg(windows)]
+pub fn enable_virtual_terminal_processing() -> std::io::Result<()> {
+    windows_console::enable_virtual_terminal_processing()
+}