From b8ef4d11fe0d00ce0884ccf982675845b20c3ce9 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Thu, 30 May 2024 16:00:32 +0200
Subject: software: Implement serial port detection

---
 software/vendor/go.bug.st/serial/unixutils/pipe.go | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 software/vendor/go.bug.st/serial/unixutils/pipe.go

(limited to 'software/vendor/go.bug.st/serial/unixutils/pipe.go')

diff --git a/software/vendor/go.bug.st/serial/unixutils/pipe.go b/software/vendor/go.bug.st/serial/unixutils/pipe.go
new file mode 100644
index 0000000..748de34
--- /dev/null
+++ b/software/vendor/go.bug.st/serial/unixutils/pipe.go
@@ -0,0 +1,82 @@
+//
+// Copyright 2014-2023 Cristian Maglie. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+
+//go:build linux || darwin || freebsd || openbsd
+
+package unixutils
+
+import (
+	"fmt"
+	"syscall"
+)
+
+// Pipe represents a unix-pipe
+type Pipe struct {
+	opened bool
+	rd     int
+	wr     int
+}
+
+// Open creates a new pipe
+func (p *Pipe) Open() error {
+	fds := []int{0, 0}
+	if err := syscall.Pipe(fds); err != nil {
+		return err
+	}
+	p.rd = fds[0]
+	p.wr = fds[1]
+	p.opened = true
+	return nil
+}
+
+// ReadFD returns the file handle for the read side of the pipe.
+func (p *Pipe) ReadFD() int {
+	if !p.opened {
+		return -1
+	}
+	return p.rd
+}
+
+// WriteFD returns the flie handle for the write side of the pipe.
+func (p *Pipe) WriteFD() int {
+	if !p.opened {
+		return -1
+	}
+	return p.wr
+}
+
+// Write to the pipe the content of data. Returns the numbre of bytes written.
+func (p *Pipe) Write(data []byte) (int, error) {
+	if !p.opened {
+		return 0, fmt.Errorf("Pipe not opened")
+	}
+	return syscall.Write(p.wr, data)
+}
+
+// Read from the pipe into the data array. Returns the number of bytes read.
+func (p *Pipe) Read(data []byte) (int, error) {
+	if !p.opened {
+		return 0, fmt.Errorf("Pipe not opened")
+	}
+	return syscall.Read(p.rd, data)
+}
+
+// Close the pipe
+func (p *Pipe) Close() error {
+	if !p.opened {
+		return fmt.Errorf("Pipe not opened")
+	}
+	err1 := syscall.Close(p.rd)
+	err2 := syscall.Close(p.wr)
+	p.opened = false
+	if err1 != nil {
+		return err1
+	}
+	if err2 != nil {
+		return err2
+	}
+	return nil
+}
-- 
cgit v1.2.3-70-g09d2