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
|
package lulu
import (
"encoding/json"
"fmt"
"strconv"
)
//go:generate go run github.com/yawnak/string-enumer -t Unit --text -o ./cover_gen.go .
// Unit is a unit of length measurement.
type Unit string
const (
Points Unit = "pt"
Millimeters Unit = "mm"
Inches Unit = "inch"
)
// coverDimensionsReq is the json body of a /cover-dimensions/ request.
type coverDimensionsReq struct {
PkgId PkgId `json:"pod_package_id"`
NPages uint `json:"interior_page_count"`
Unit Unit `json:"unit"`
}
type CoverDimensions struct {
Width, Height float64
Unit Unit
}
func (cd *CoverDimensions) UnmarshalJSON(data []byte) error {
s := string(data)
var alias struct {
Width, Height string
Unit Unit
}
if err := json.Unmarshal(data, &alias); err != nil {
return fmt.Errorf("malformed %T: %q: %w", cd, s, err)
}
w, err := strconv.ParseFloat(alias.Width, 64)
if err != nil {
return fmt.Errorf("malformed %T.Width: %q: %w", cd, s, err)
}
h, err := strconv.ParseFloat(alias.Height, 64)
if err != nil {
return fmt.Errorf("malformed %T.Height: %q: %w", cd, s, err)
}
cd.Width = w
cd.Height = h
cd.Unit = alias.Unit
return nil
}
|