-
Notifications
You must be signed in to change notification settings - Fork 35
/
decoder.go
74 lines (68 loc) · 1.64 KB
/
decoder.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
// Copyright 2016 IBM Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package replication
import (
"bufio"
"io"
"strconv"
"strings"
)
type decoder struct {
*bufio.Reader
}
func newDecoder(r io.Reader) *decoder {
dec := &decoder{bufio.NewReader(r)}
return dec
}
func (dec *decoder) Decode() (event, error) {
// peek ahead before we start a new event so we can return EOFs
_, err := dec.Peek(1)
if err == io.ErrUnexpectedEOF {
err = io.EOF
}
if err != nil {
return nil, err
}
ev := new(sse)
for {
line, err := dec.ReadString('\n')
if err != nil {
return nil, err
}
if line == "\n" {
break
}
line = strings.TrimSuffix(line, "\n")
if strings.HasPrefix(line, ":") {
continue
}
sections := strings.SplitN(line, ":", 2)
field, value := sections[0], ""
if len(sections) == 2 {
value = strings.TrimPrefix(sections[1], " ")
}
switch field {
case "event":
ev.event = value
case "data":
ev.data += value + "\n"
case "id":
ev.id = value
case "retry":
ev.retry, _ = strconv.ParseInt(value, 10, 64)
}
}
ev.data = strings.TrimSuffix(ev.data, "\n")
return ev, nil
}