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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
package segment
import (
"bytes"
"fmt"
"reflect"
"strings"
"github.com/mitch000001/go-hbci/element"
)
const (
senderBank = "I"
senderUser = "K"
senderBoth = "K/I"
)
type Segment interface {
Header() *element.SegmentHeader
SetPosition(func() int)
String() string
}
type ClientSegment interface {
Segment
Marshaler
}
type BankSegment interface {
Segment
Unmarshaler
}
type CommonSegment interface {
Segment
Marshaler
Unmarshaler
}
type basicSegment interface {
Version() int
ID() string
referencedId() string
sender() string
elements() []element.DataElement
}
type Marshaler interface {
MarshalHBCI() ([]byte, error)
}
type Unmarshaler interface {
UnmarshalHBCI([]byte) error
}
func SegmentFromHeaderBytes(headerBytes []byte, seg basicSegment) (*segment, error) {
header := &element.SegmentHeader{}
err := header.UnmarshalHBCI(headerBytes)
if err != nil {
return nil, fmt.Errorf("Error while unmarshaling segment header: %v", err)
}
return NewBasicSegmentWithHeader(header, seg), nil
}
func NewReferencingBasicSegment(position int, ref int, seg basicSegment) *segment {
header := element.NewReferencingSegmentHeader(seg.ID(), position, seg.Version(), ref)
return NewBasicSegmentWithHeader(header, seg)
}
func NewBasicSegment(position int, seg basicSegment) *segment {
header := element.NewSegmentHeader(seg.ID(), position, seg.Version())
return NewBasicSegmentWithHeader(header, seg)
}
func NewBasicSegmentWithHeader(header *element.SegmentHeader, seg basicSegment) *segment {
return &segment{header: header, segment: seg}
}
type segment struct {
segment basicSegment
header *element.SegmentHeader
}
func (s *segment) String() string {
elementStrings := make([]string, len(s.segment.elements())+1)
elementStrings[0] = s.header.String()
for i, de := range s.segment.elements() {
val := reflect.ValueOf(de)
if val.IsValid() && !val.IsNil() {
elementStrings[i+1] = de.String()
}
}
return strings.Join(elementStrings, "+") + "'"
}
func (s *segment) MarshalHBCI() ([]byte, error) {
elementBytes := make([][]byte, len(s.segment.elements())+1)
headerBytes, err := s.header.MarshalHBCI()
if err != nil {
return nil, err
}
elementBytes[0] = headerBytes
for i, de := range s.segment.elements() {
val := reflect.ValueOf(de)
if val.IsValid() && !val.IsNil() {
marshaled, err := de.MarshalHBCI()
if err != nil {
return nil, err
}
elementBytes[i+1] = marshaled
}
}
marshaled := bytes.Join(elementBytes, []byte("+"))
marshaled = bytes.TrimRight(marshaled, "+")
marshaled = append(marshaled, '\'')
return marshaled, nil
}
func (s *segment) DataElements() []element.DataElement {
var dataElements []element.DataElement
dataElements = append(dataElements, s.header)
dataElements = append(dataElements, s.segment.elements()...)
return dataElements
}
func (s *segment) Header() *element.SegmentHeader {
return s.header
}
func (s *segment) ID() string {
return s.header.ID.Val()
}
func (s *segment) Version() int {
return s.header.Version.Val()
}
func (s *segment) SetPosition(positionFn func() int) {
s.header.SetPosition(positionFn())
}
func (s *segment) SetReference(ref int) {
s.header.SetReference(ref)
}
|
