github.com/uber/kraken@v0.1.4/utils/rwutil/rwutil.go (about)

     1  // Copyright (c) 2016-2019 Uber Technologies, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package rwutil
    15  
    16  import "io"
    17  
    18  // PlainReader provides an io.Reader for a bytes slice. It intentionally does
    19  // not provide any other methods.
    20  type PlainReader []byte
    21  
    22  // Read always reads the entire underlying byte slice.
    23  func (p PlainReader) Read(b []byte) (n int, err error) {
    24  	copy(b, p)
    25  	return len(p), io.EOF
    26  }
    27  
    28  // PlainWriter provides an io.Writer for a bytes slice. It intentionally does
    29  // not provide any other methods. Clients should initialize length with make.
    30  type PlainWriter []byte
    31  
    32  // Write writes all of b to p.
    33  func (p PlainWriter) Write(b []byte) (n int, err error) {
    34  	copy(p, b)
    35  	return len(p), nil
    36  }