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devdraw over stdin+stdout #144

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devdraw over stdin+stdout #144

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16 changes: 15 additions & 1 deletion draw/drawfcall/mux.go
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// +build !plan9
//go:build !plan9

package drawfcall

Expand Down Expand Up @@ -26,6 +26,20 @@ type Conn struct {

func New() (*Conn, error) {
devdraw := os.Getenv("DEVDRAW")

if devdraw == "-" {
c := &Conn{
rd: os.Stdin,
wr: os.Stdout,
freetag: make(map[byte]bool),
tagmap: make(map[byte]chan []byte),
}
for i := 1; i <= 254; i++ {
c.freetag[byte(i)] = true
}
return c, nil
}

r1, w1, _ := os.Pipe()
r2, w2, _ := os.Pipe()
if devdraw == "" {
Expand Down