How convert a RSS source to org-mode calendar file

rss2org.go

package main


import (
	"time"
	"bytes"
	"encoding/xml"
	"os"
	"fmt"
	"net/http"
	"io/ioutil"
)


type RssFeed struct {
	XMLName xml.Name    `xml:"rss"`
	Channel *RssChannel `xml:"channel"`
}

type RssChannel struct {
	XMLName       xml.Name `xml:"channel"`
	Title         string   `xml:"title"`
	Description   string   `xml:"description"`
	Link          string   `xml:"link"`
	Language      string   `xml:"language"`
	PubDate       string   `xml:"pubDate"`
	LastBuildDate string   `xml:"lastBuildDate"`
	Items []RssItem `xml:"item"`
}


type RssItem struct{
	Title string `xml:"title"`
	Description string `xml:"description"`
	Author string `xml:"author"`
	PubDate string `xml:"pubDate"`
}



func main(){
	if len(os.Args)<2{
		fmt.Println("RSS url not found")
		os.Exit(0)
	}

	url:=os.Args[1]
	xml := fetchRss(url)
	rss := parseXml(xml)
	printRSS(rss.Channel)
}



func fetchRss(url string) []byte {
	resp, err := http.Get(url)
	content,err:=ioutil.ReadAll(resp.Body)
	if err!=nil{
		fmt.Println("Fetching failed")
		os.Exit(0)
	}

	f, err:=ioutil.TempFile("","rssfile")
	_,err=f.Write(content)
	
	rssContent, err := ioutil.ReadFile(f.Name())
	if err != nil {
		fmt.Println("Unable to read src xml file.", err)
		os.Exit(0)
	}
	return rssContent
}


func parseXml(x []byte) *RssFeed {
	feed := RssFeed{}
	d := xml.NewDecoder(bytes.NewReader(x))
	d.DefaultSpace = "RssDefault"
	err := d.Decode(&feed)
	if err != nil {
		fmt.Println("Failed decoding xml")
		os.Exit(0)
	}
	return &feed
}

func printRSS(rss *RssChannel) {
	fmt.Printf("\n\n* %s\n",rss.Title)
	fmt.Printf("%s\n",rss.Description)
	if (rss.Link!=""){
		fmt.Printf("From %s\n",rss.Link)
	}
	fmt.Printf("\n")
	for i:=range rss.Items{
		t,_:=time.Parse("Mon, 2 Jan 2006 15:04:05 -0700",rss.Items[i].PubDate)
		fmt.Println("** ",rss.Items[i].Title)
		fmt.Println("\t",rss.Items[i].Description)
		fmt.Println("\t<"+t.Format("2006-01-02 Mon 15:04")+">")
	}
}