Adding upstream version 0.0~git20250520.a1d9079+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

bind/printer.go

@@ -0,0 +1,67 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bind
+
+import (
+	"bytes"
+	"fmt"
+)
+
+type Printer struct {
+	Buf        *bytes.Buffer
+	IndentEach []byte
+	indentText []byte
+	needIndent bool
+}
+
+func (p *Printer) writeIndent() error {
+	if !p.needIndent {
+		return nil
+	}
+	p.needIndent = false
+	_, err := p.Buf.Write(p.indentText)
+	return err
+}
+
+func (p *Printer) Write(b []byte) (n int, err error) {
+	wrote := 0
+	for len(b) > 0 {
+		if err := p.writeIndent(); err != nil {
+			return wrote, err
+		}
+		i := bytes.IndexByte(b, '\n')
+		if i < 0 {
+			break
+		}
+		n, err = p.Buf.Write(b[0 : i+1])
+		wrote += n
+		if err != nil {
+			return wrote, err
+		}
+		b = b[i+1:]
+		p.needIndent = true
+	}
+	if len(b) > 0 {
+		n, err = p.Buf.Write(b)
+		wrote += n
+	}
+	return wrote, err
+}
+
+func (p *Printer) Printf(format string, args ...interface{}) {
+	if _, err := fmt.Fprintf(p, format, args...); err != nil {
+		panic(fmt.Sprintf("printer: %v", err))
+	}
+}
+
+func (p *Printer) Indent() {
+	p.indentText = append(p.indentText, p.IndentEach...)
+}
+
+func (p *Printer) Outdent() {
+	if len(p.indentText) > len(p.IndentEach)-1 {
+		p.indentText = p.indentText[len(p.IndentEach):]
+	}
+}