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package main
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"crypto/tls"
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"io/ioutil"
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"net/http"
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"path/filepath"
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irc "github.com/fluffle/goirc/client"
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baseurl = flag.String("baseurl", "gemini://m2i.omarpolo.com", "base url")
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matrixOutDir = flag.String("matrix-out", "", "matrix out directory")
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matrixRe = regexp.MustCompile(`https://matrix.org/[^\s]+\.txt`)
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channel = "#gemini-italia"
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func matrix2gemini(conn *irc.Conn, line *irc.Line) {
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matches := matrixRe.FindAllString(line.Text(), -1)
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// it's not a good idea to defer inside a loop, but we know
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// len(matches) is small (usually just 1). Morover, I like
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// living in danger!
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for _, link := range matches {
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resp, err := http.Get(link)
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if err != nil {
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conn.Privmsg(
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fmt.Sprintf("failed to download %q: %s", link, err),
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defer resp.Body.Close()
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tmpfile, err := ioutil.TempFile(*matrixOutDir, "message-")
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if err != nil {
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conn.Privmsg(channel, fmt.Sprintf("failed to tmpfile: %s", err))
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defer tmpfile.Close()
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io.Copy(tmpfile, resp.Body)
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conn.Privmsg(
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fmt.Sprintf(
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"better: %s/%s",
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filepath.Base(tmpfile.Name()),
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func dostuff(conn *irc.Conn, line *irc.Line) {
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matrix2gemini(conn, line)
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func main() {
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flag.Parse()
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cfg := irc.NewConfig("gemitbot")
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cfg.SSL = true
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cfg.SSLConfig = &tls.Config{ServerName: "irc.freenode.net"}
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cfg.Server = "irc.freenode.net:7000"
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cfg.NewNick = func(n string) string { return n + "^" }
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c := irc.Client(cfg)
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c.HandleFunc(irc.CONNECTED, func(conn *irc.Conn, line *irc.Line) {
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log.Println("connected, joining", channel)
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conn.Join(channel)
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c.HandleFunc(irc.PRIVMSG, dostuff)
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c.HandleFunc(irc.ACTION, dostuff)
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quit := make(chan bool)
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c.HandleFunc(irc.DISCONNECTED, func(conn *irc.Conn, line *irc.Line) {
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quit <- true
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if err := c.Connect(); err != nil {
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log.Fatalln("connection error:", err)