First commit

vendor/github.com/tdewolff/parse/buffer/reader.go

@@ -0,0 +1,44 @@
+package buffer // import "github.com/tdewolff/parse/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)
+}