go-pkg-rss/item.go

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package feeder
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import (
"crypto/md5"
"io"
)
type Item struct {
// RSS and Shared fields
Title string
Links []*Link
Description string
Author Author
Categories []*Category
Comments string
Enclosures []*Enclosure
Guid *string
PubDate string
Source *Source
// Atom specific fields
Id string
Generator *Generator
Contributors []string
Content *Content
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Extensions map[string]*Extension
}
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func (i *Item) Key() string {
switch {
case i.Guid != nil && len(*i.Guid) != 0:
return *i.Guid
case len(i.Id) != 0:
return i.Id
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case len(i.Title) > 0 && len(i.PubDate) > 0:
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return i.Title + i.PubDate
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default:
h := md5.New()
io.WriteString(h, i.Description)
return string(h.Sum(nil))
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}
}