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package main
import (
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
"github.com/mmcdole/gofeed"
"github.com/mmcdole/gofeed/atom"
"github.com/mmcdole/gofeed/rss"
"github.com/urfave/cli"
)
func main() {
app := cli.NewApp()
app.Name = "ftest"
app.Usage = "provide a feed file path or url to parse and print"
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "type,t",
Value: "universal",
Usage: "type of parser (atom, rss, universal)",
},
}
app.Action = func(c *cli.Context) {
if c.NArg() == 0 {
fmt.Println("Missing feed path or url")
os.Exit(1)
}
feedType := c.String("type")
feedLoc := c.Args()[0]
fc, err := fetchFeed(feedLoc)
if err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
var feed interface{}
if strings.EqualFold(feedType, "rss") ||
strings.EqualFold(feedType, "r") {
p := rss.Parser{}
feed, err = p.Parse(strings.NewReader(fc))
} else if strings.EqualFold(feedType, "atom") ||
strings.EqualFold(feedType, "a") {
p := atom.Parser{}
feed, err = p.Parse(strings.NewReader(fc))
} else {
p := gofeed.NewParser()
feed, err = p.ParseString(fc)
}
if err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
fmt.Println(feed)
}
app.Run(os.Args)
}
func fetchFeed(feedLoc string) (string, error) {
if strings.HasPrefix(feedLoc, "http") {
return fetchURL(feedLoc)
}
file, err := fetchFile(feedLoc)
if err != nil {
return "", err
}
return string(file), nil
}
func fetchFile(path string) (string, error) {
f, err := ioutil.ReadFile(path)
return string(f), err
}
func fetchURL(url string) (string, error) {
response, err := http.Get(url)
if err != nil {
return "", err
}
defer response.Body.Close()
contents, err := ioutil.ReadAll(response.Body)
if err != nil {
return "", err
}
return string(contents), nil
}
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