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package tools
import (
"bytes"
"fmt"
"io"
)
// LazyBuffer is a [bytes.Buffer] that minimizes counting and error checks.
type LazyBuffer bytes.Buffer
// Sys returns the underlying [bytes.Buffer].
func (buf *LazyBuffer) Sys() *bytes.Buffer {
if buf == nil {
return nil
}
return (*bytes.Buffer)(buf)
}
// Len tells the size in bytes of the currently stored data.
func (buf *LazyBuffer) Len() int { return buf.Sys().Len() }
// String returns the stored data as string.
func (buf *LazyBuffer) String() string { return buf.Sys().String() }
// Bytes returns the stored data as a bytes slice.
func (buf *LazyBuffer) Bytes() []byte { return buf.Sys().Bytes() }
// Write implements the standard io.Writer interface.
func (buf *LazyBuffer) Write(b []byte) (int, error) { return buf.Sys().Write(b) }
// WriteTo implements the standard WriteTo() interface.
func (buf *LazyBuffer) WriteTo(out io.Writer) (int64, error) { return buf.Sys().WriteTo(out) }
// Print appends the [fmt.Print] equivalent to the buffer.
func (buf *LazyBuffer) Print(a ...any) error {
_, err := fmt.Fprint(buf.Sys(), a...)
return err
}
// Println appends the [fmt.Println] equivalent to the buffer.
func (buf *LazyBuffer) Println(a ...any) error {
_, err := fmt.Fprintln(buf.Sys(), a...)
return err
}
// Printf appends the [fmt.Printf] equivalent to the buffer.
func (buf *LazyBuffer) Printf(format string, a ...any) error {
_, err := fmt.Fprintf(buf.Sys(), format, a...)
return err
}
// WriteRunes appends the given runes as UTF-8 characters to the buffer.
func (buf *LazyBuffer) WriteRunes(runes ...rune) {
for _, r := range runes {
_, _ = buf.Sys().WriteRune(r)
}
}
// WriteBytes writes the given byte arrays to the buffer.
func (buf *LazyBuffer) WriteBytes(s ...[]byte) {
for _, b := range s {
_, _ = buf.Sys().Write(b)
}
}
// WriteStrings writes the given strings as UTF-8 to the buffer.
func (buf *LazyBuffer) WriteStrings(strings ...string) {
for _, s := range strings {
_, _ = buf.Sys().WriteString(s)
}
}