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publisher.go
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publisher.go
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package model
import (
"fmt"
)
type Publisher int
const (
publisherUnknown Publisher = iota // must be first
PublisherNoop
PublisherIpfs
PublisherEstuary
PublisherS3
publisherDone // must be last
)
var publisherNames = map[Publisher]string{
PublisherNoop: "noop",
PublisherIpfs: "ipfs",
PublisherEstuary: "estuary",
PublisherS3: "s3",
}
func ParsePublisher(str string) (Publisher, error) {
for typ := publisherUnknown + 1; typ < publisherDone; typ++ {
if equal(typ.String(), str) {
return typ, nil
}
}
return publisherUnknown, fmt.Errorf("publisher: unknown type '%s'", str)
}
func IsValidPublisher(publisherType Publisher) bool {
return publisherType > publisherUnknown && publisherType < publisherDone
}
func PublisherTypes() []Publisher {
var res []Publisher
for typ := publisherUnknown + 1; typ < publisherDone; typ++ {
res = append(res, typ)
}
return res
}
func PublisherNames() []string {
var names []string
for _, typ := range PublisherTypes() {
names = append(names, typ.String())
}
return names
}
func (p Publisher) String() string {
value, ok := publisherNames[p]
if !ok {
return Unknown
}
return value
}
func (p Publisher) MarshalText() ([]byte, error) {
return []byte(p.String()), nil
}
func (p *Publisher) UnmarshalText(text []byte) (err error) {
name := string(text)
*p, err = ParsePublisher(name)
return
}