From 394ffd886032f79982f56b6c692d2f782b6bdfe2 Mon Sep 17 00:00:00 2001
From: Icemap <qizhi.wang@pingcap.com>
Date: Sat, 11 Nov 2023 00:16:29 +0800
Subject: [PATCH 1/2] feat: cwriter for wasm

---
 cwriter/util_wasm.go    |  6 ++++++
 cwriter/writer_posix.go |  2 +-
 cwriter/writer_wasm.go  | 21 +++++++++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 cwriter/util_wasm.go
 create mode 100644 cwriter/writer_wasm.go

diff --git a/cwriter/util_wasm.go b/cwriter/util_wasm.go
new file mode 100644
index 00000000..8653efca
--- /dev/null
+++ b/cwriter/util_wasm.go
@@ -0,0 +1,6 @@
+//go:build wasm || js
+
+package cwriter
+
+// There is no ioctl on wasm, so we just use a dummy value.
+const ioctlReadTermios = unix.TIOCGETA
diff --git a/cwriter/writer_posix.go b/cwriter/writer_posix.go
index e80d757a..3b900156 100644
--- a/cwriter/writer_posix.go
+++ b/cwriter/writer_posix.go
@@ -1,4 +1,4 @@
-//go:build !windows
+//go:build !windows && !js && !wasm
 
 package cwriter
 
diff --git a/cwriter/writer_wasm.go b/cwriter/writer_wasm.go
new file mode 100644
index 00000000..76bb8366
--- /dev/null
+++ b/cwriter/writer_wasm.go
@@ -0,0 +1,21 @@
+//go:build js || wasm
+
+package cwriter
+
+// We can not use writer in wasm, so we just use a dummy value.
+type Writer struct {
+}
+
+func (w *Writer) Flush(lines int) error {
+	return nil
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	return 0, 0, nil
+}
+
+// IsTerminal returns whether the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	return true
+}

From 6d52d294e3038e94e8f64800808f53d39fa7e74d Mon Sep 17 00:00:00 2001
From: Icemap <qizhi.wang@pingcap.com>
Date: Sat, 11 Nov 2023 00:28:54 +0800
Subject: [PATCH 2/2] fix: ioctl number

---
 cwriter/util_wasm.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cwriter/util_wasm.go b/cwriter/util_wasm.go
index 8653efca..11dfb552 100644
--- a/cwriter/util_wasm.go
+++ b/cwriter/util_wasm.go
@@ -3,4 +3,4 @@
 package cwriter
 
 // There is no ioctl on wasm, so we just use a dummy value.
-const ioctlReadTermios = unix.TIOCGETA
+const ioctlReadTermios = 0