mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 10:02:47 +00:00
45 lines
878 B
Go
45 lines
878 B
Go
|
package buffer
|
||
|
|
||
|
import "io"
|
||
|
|
||
|
// Reader implements an io.Reader over a byte slice.
|
||
|
type Reader struct {
|
||
|
buf []byte
|
||
|
pos int
|
||
|
}
|
||
|
|
||
|
// NewReader returns a new Reader for a given byte slice.
|
||
|
func NewReader(buf []byte) *Reader {
|
||
|
return &Reader{
|
||
|
buf: buf,
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Read reads bytes into the given byte slice and returns the number of bytes read and an error if occurred.
|
||
|
func (r *Reader) Read(b []byte) (n int, err error) {
|
||
|
if len(b) == 0 {
|
||
|
return 0, nil
|
||
|
}
|
||
|
if r.pos >= len(r.buf) {
|
||
|
return 0, io.EOF
|
||
|
}
|
||
|
n = copy(b, r.buf[r.pos:])
|
||
|
r.pos += n
|
||
|
return
|
||
|
}
|
||
|
|
||
|
// Bytes returns the underlying byte slice.
|
||
|
func (r *Reader) Bytes() []byte {
|
||
|
return r.buf
|
||
|
}
|
||
|
|
||
|
// Reset resets the position of the read pointer to the beginning of the underlying byte slice.
|
||
|
func (r *Reader) Reset() {
|
||
|
r.pos = 0
|
||
|
}
|
||
|
|
||
|
// Len returns the length of the buffer.
|
||
|
func (r *Reader) Len() int {
|
||
|
return len(r.buf)
|
||
|
}
|