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header_param_decoder.go
53 lines (44 loc) · 1.01 KB
/
header_param_decoder.go
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package uri
import (
"net/http"
"strings"
"github.com/go-faster/errors"
)
type headerParamDecoder struct {
paramName string
explode bool
header http.Header
}
func (d *headerParamDecoder) DecodeValue() (string, error) {
if len(d.header.Values(d.paramName)) == 0 {
return "", errors.Errorf("header parameter %q not set", d.paramName)
}
return d.header.Get(d.paramName), nil
}
func (d *headerParamDecoder) DecodeArray(f func(Decoder) error) error {
val, err := d.DecodeValue()
if err != nil {
return err
}
for _, v := range strings.Split(val, ",") {
if err := f(constval{v}); err != nil {
return err
}
}
return nil
}
func (d *headerParamDecoder) DecodeFields(f func(field string, d Decoder) error) error {
val, err := d.DecodeValue()
if err != nil {
return err
}
pushField := func(field, value string) error { return f(field, constval{value}) }
kvSep, fieldSep := ',', ','
if d.explode {
kvSep = '='
}
return decodeObject(
(&cursor{src: []rune(val)}),
kvSep, fieldSep, pushField,
)
}