77 lines
1.3 KiB
Go
77 lines
1.3 KiB
Go
package data
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import (
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"encoding/gob"
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"fmt"
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"os"
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"github.com/gorilla/feeds"
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)
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type Feed struct {
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feeds.Feed
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addChan chan *feeds.Item
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}
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func (f *Feed) start() {
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for item := range f.addChan {
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f.Items = append(f.Items, item)
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}
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}
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func NewFeed(title, link, desc string) *Feed {
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feed := &Feed{
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Feed: feeds.Feed{
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Title: title,
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Link: &feeds.Link{Href: link},
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Description: desc,
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},
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addChan: make(chan *feeds.Item),
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}
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feed.start()
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return feed
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}
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func (f *Feed) Close() {
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close(f.addChan)
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}
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func OpenFeed(filename string) (*Feed, error) {
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file, err := os.Open(filename)
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if err != nil {
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return nil, fmt.Errorf("error opening file %v: %v", filename, err)
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}
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defer file.Close()
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feed := new(Feed)
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decoder := gob.NewDecoder(file)
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err = decoder.Decode(&feed.Feed)
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if err != nil {
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return nil, fmt.Errorf("error decoding file %v: %v", filename, err)
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}
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feed.addChan = make(chan *feeds.Item)
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feed.start()
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return feed, nil
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}
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func (f *Feed) Save(filename string) error {
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file, err := os.Create(filename)
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if err != nil {
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return fmt.Errorf("error creating file %v: %v", filename, err)
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}
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defer file.Close()
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encoder := gob.NewEncoder(file)
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err = encoder.Encode(f.Feed)
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if err != nil {
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return fmt.Errorf("error encoding file %v: %v", filename, err)
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}
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return nil
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}
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func (f *Feed) Add(i *feeds.Item) {
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f.addChan <- i
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}
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