github.com/aacfactory/fns@v1.2.85/transports/middlewares/compress/compressor.go (about)

     1  /*
     2   * Copyright 2023 Wang Min Xiang
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   * 	http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   *
    16   */
    17  
    18  package compress
    19  
    20  import (
    21  	"github.com/valyala/fasthttp"
    22  )
    23  
    24  type Compressor interface {
    25  	Name() string
    26  	Compress(p []byte) (out []byte, err error)
    27  }
    28  
    29  type GzipCompressor struct {
    30  	level int
    31  }
    32  
    33  func (g *GzipCompressor) Name() string {
    34  	return GzipName
    35  }
    36  
    37  func (g *GzipCompressor) Compress(p []byte) (out []byte, err error) {
    38  	out = make([]byte, 0, 1)
    39  	out = fasthttp.AppendGzipBytesLevel(out, p, g.level)
    40  	return
    41  }
    42  
    43  type DeflateCompressor struct {
    44  	level int
    45  }
    46  
    47  func (d *DeflateCompressor) Name() string {
    48  	return DeflateName
    49  }
    50  
    51  func (d *DeflateCompressor) Compress(p []byte) (out []byte, err error) {
    52  	out = make([]byte, 0, 1)
    53  	out = fasthttp.AppendDeflateBytesLevel(out, p, d.level)
    54  	return
    55  }
    56  
    57  type BrotliCompressor struct {
    58  	level int
    59  }
    60  
    61  func (b *BrotliCompressor) Name() string {
    62  	return BrotliName
    63  }
    64  
    65  func (b *BrotliCompressor) Compress(p []byte) (out []byte, err error) {
    66  	out = make([]byte, 0, 1)
    67  	out = fasthttp.AppendBrotliBytesLevel(out, p, b.level)
    68  	return
    69  }