github.com/kaydxh/golang@v0.0.131/go/net/http/response_writer.go (about)

     1  /*
     2   *Copyright (c) 2022, kaydxh
     3   *
     4   *Permission is hereby granted, free of charge, to any person obtaining a copy
     5   *of this software and associated documentation files (the "Software"), to deal
     6   *in the Software without restriction, including without limitation the rights
     7   *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   *copies of the Software, and to permit persons to whom the Software is
     9   *furnished to do so, subject to the following conditions:
    10   *
    11   *The above copyright notice and this permission notice shall be included in all
    12   *copies or substantial portions of the Software.
    13   *
    14   *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   *SOFTWARE.
    21   */
    22  package http
    23  
    24  import (
    25  	"bytes"
    26  	"fmt"
    27  	"net/http"
    28  )
    29  
    30  // ResponseWriterWrapper
    31  type ResponseWriterWrapper struct {
    32  	w          http.ResponseWriter
    33  	body       bytes.Buffer
    34  	statusCode int
    35  }
    36  
    37  func NewResponseWriterWrapper(w http.ResponseWriter) *ResponseWriterWrapper {
    38  	return &ResponseWriterWrapper{
    39  		w:          w,
    40  		statusCode: http.StatusOK,
    41  	}
    42  }
    43  
    44  func (rww *ResponseWriterWrapper) Write(buf []byte) (int, error) {
    45  	rww.body.Write(buf)
    46  	return rww.w.Write(buf)
    47  }
    48  
    49  // Header function overwrites the http.ResponseWriter Header() function
    50  func (rww *ResponseWriterWrapper) Header() http.Header {
    51  	return rww.w.Header()
    52  }
    53  
    54  // WriteHeader function overwrites the http.ResponseWriter WriteHeader() function
    55  func (rww *ResponseWriterWrapper) WriteHeader(statusCode int) {
    56  	rww.statusCode = statusCode
    57  	rww.w.WriteHeader(statusCode)
    58  }
    59  
    60  //  String function pack respose header, http status code and body
    61  func (rww *ResponseWriterWrapper) String() string {
    62  	var buf bytes.Buffer
    63  
    64  	buf.WriteString("Headers:")
    65  	for k, v := range rww.w.Header() {
    66  		buf.WriteString(fmt.Sprintf("%s: %v", k, v))
    67  	}
    68  
    69  	buf.WriteString(fmt.Sprintf(" Status Code:%d", rww.statusCode))
    70  
    71  	buf.WriteString(" Body:")
    72  	buf.WriteString(rww.body.String())
    73  	return buf.String()
    74  }