77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
// vim:ts=4:sts=4:sw=4:noet:tw=72
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//
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// This code is mostly derived from the example code by Jim Teeuwen
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// and is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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// license.
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package news
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import (
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"bufio"
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"errors"
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"fmt"
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"io"
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"log"
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"os"
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"time"
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rss "github.com/jteeuwen/go-pkg-rss"
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"github.com/jteeuwen/go-pkg-xmlx"
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)
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var sayCh chan string
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var hideOutput = true
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func Init(ch chan string, path string) {
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log.Printf("Initializing news module")
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sayCh = ch
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file, err := os.Open(path)
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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<-time.After(60 * time.Second)
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for scanner.Scan() {
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go PollFeed(scanner.Text(), 5, charsetReader)
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}
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if err := scanner.Err(); err != nil {
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log.Fatal(err)
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}
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time.Sleep(60 * time.Second)
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hideOutput = false
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}
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func PollFeed(uri string, timeout int, cr xmlx.CharsetFunc) {
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feed := rss.New(timeout, true, chanHandler, itemHandler)
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for {
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log.Printf("Polling feed: %s", uri)
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if err := feed.Fetch(uri, cr); err != nil {
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log.Printf("[e] %s: %s", "*", uri, err)
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//sayCh <- fmt.Sprintf("%s\n[e] %s: %s", "*", uri, err)
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return
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}
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<-time.After(time.Duration(feed.SecondsTillUpdate() * 1e9))
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}
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}
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func chanHandler(feed *rss.Feed, newchannels []*rss.Channel) {
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//sayCh <- fmt.Sprintf("%s\n%d new channel(s) in %s", "*", len(newchannels), feed.Url)
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}
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func itemHandler(feed *rss.Feed, ch *rss.Channel, newitems []*rss.Item) {
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if hideOutput {
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return
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}
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for _, ni := range newitems {
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sayCh <- fmt.Sprintf("%s\n*** [NEWS] %v - %v", "*", ni.Title, ni.Links[0].Href)
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}
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}
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func charsetReader(charset string, r io.Reader) (io.Reader, error) {
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if charset == "ISO-8859-1" || charset == "iso-8859-1" {
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return r, nil
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}
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return nil, errors.New("Unsupported character set encoding: " + charset)
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}
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