12 5ad39add 2021-04-27 op "path/filepath"
16 deee939b 2022-01-08 op "github.com/andybalholm/cascadia"
17 7cc05214 2021-04-27 op irc "github.com/fluffle/goirc/client"
18 5659492e 2021-12-02 op "golang.org/x/net/html"
22 88370dfe 2021-11-07 op baseurl = flag.String("baseurl", "gemini://m2i.omarpolo.com", "base url")
23 7cc05214 2021-04-27 op matrixOutDir = flag.String("matrix-out", "", "matrix out directory")
25 88370dfe 2021-11-07 op msgRe = regexp.MustCompile(`https://.*/[^\s]+\.(txt|png|jpg|jpeg|gif)`)
26 c6fd4def 2021-07-30 op channel = "#gemini-it"
28 88370dfe 2021-11-07 op tooLongRe = regexp.MustCompile(`full message at (https://libera.ems.host/.*)[)]`)
30 4852f411 2021-12-02 op httplink = regexp.MustCompile(`https?://[^\s)]+`)
31 cfb62e6e 2022-01-08 op gemlink = regexp.MustCompile(`gemini://[^\s)]+`)
34 7cc05214 2021-04-27 op func matrix2gemini(conn *irc.Conn, line *irc.Line) {
35 ae97f748 2021-07-30 op matches := msgRe.FindAllString(line.Text(), -1)
37 7cc05214 2021-04-27 op // it's not a good idea to defer inside a loop, but we know
38 7cc05214 2021-04-27 op // len(matches) is small (usually just 1). Morover, I like
39 7cc05214 2021-04-27 op // living in danger!
41 7cc05214 2021-04-27 op for _, link := range matches {
42 7cc05214 2021-04-27 op resp, err := http.Get(link)
43 7cc05214 2021-04-27 op if err != nil {
46 7cc05214 2021-04-27 op fmt.Sprintf("failed to download %q: %s", link, err),
50 7cc05214 2021-04-27 op defer resp.Body.Close()
52 ae97f748 2021-07-30 op ext := path.Ext(link)
53 657af0a4 2022-07-03 op tmpfile, err := os.CreateTemp(*matrixOutDir, "message-*"+ext)
54 7cc05214 2021-04-27 op if err != nil {
55 7cc05214 2021-04-27 op conn.Privmsg(channel, fmt.Sprintf("failed to tmpfile: %s", err))
58 7cc05214 2021-04-27 op defer tmpfile.Close()
60 657af0a4 2022-07-03 op os.Chmod(tmpfile.Name(), 0644)
62 7cc05214 2021-04-27 op io.Copy(tmpfile, resp.Body)
67 5ad39add 2021-04-27 op "better: %s/%s",
69 5ad39add 2021-04-27 op filepath.Base(tmpfile.Name()),
75 88370dfe 2021-11-07 op func messageTooLong(conn *irc.Conn, line *irc.Line) {
76 88370dfe 2021-11-07 op matches := tooLongRe.FindStringSubmatch(line.Text())
77 88370dfe 2021-11-07 op if len(matches) != 2 {
81 88370dfe 2021-11-07 op url := matches[1]
83 88370dfe 2021-11-07 op resp, err := http.Get(url)
84 88370dfe 2021-11-07 op if err != nil {
87 88370dfe 2021-11-07 op fmt.Sprintf("failed to download %q: %s", url, err),
91 88370dfe 2021-11-07 op defer resp.Body.Close()
93 88370dfe 2021-11-07 op sb := &strings.Builder{}
94 88370dfe 2021-11-07 op if _, err := io.Copy(sb, resp.Body); err != nil {
97 88370dfe 2021-11-07 op fmt.Sprintf("failed to read body of %q: %s", url, err),
102 88370dfe 2021-11-07 op conn.Privmsg(channel, fmt.Sprintf("%s ha detto:", line.Nick))
103 88370dfe 2021-11-07 op for _, line := range strings.Split(sb.String(), "\n") {
104 88370dfe 2021-11-07 op conn.Privmsg(
111 3adf60f8 2021-12-02 op func stringifyNode(node *html.Node) string {
114 3adf60f8 2021-12-02 op if node.Type == html.TextNode {
115 3adf60f8 2021-12-02 op return node.Data
118 3adf60f8 2021-12-02 op for child := node.FirstChild; child != nil; child = child.NextSibling {
119 3adf60f8 2021-12-02 op s += stringifyNode(child)
125 cfb62e6e 2022-01-08 op func wwwpagetitle(conn *irc.Conn, line *irc.Line) {
126 5659492e 2021-12-02 op matches := httplink.FindAllString(line.Text(), -1)
128 5659492e 2021-12-02 op for _, link := range matches {
129 d26637f1 2021-12-02 op log.Println("fetching", link, "...")
131 5659492e 2021-12-02 op resp, err := http.Get(link)
132 5659492e 2021-12-02 op if err != nil {
135 5659492e 2021-12-02 op defer resp.Body.Close()
137 5659492e 2021-12-02 op doc, err := html.Parse(resp.Body)
138 5659492e 2021-12-02 op if err != nil {
142 deee939b 2022-01-08 op sel := cascadia.MustCompile("head > title")
143 deee939b 2022-01-08 op n := cascadia.Query(doc, sel)
145 deee939b 2022-01-08 op if n == nil {
149 0c3e9562 2022-01-08 op title := stringifyNode(n)
150 0c3e9562 2022-01-08 op if len(title) > 50 {
151 0c3e9562 2022-01-08 op title = title[:50]
153 deee939b 2022-01-08 op conn.Privmsg(channel, stringifyNode(n))
157 cfb62e6e 2022-01-08 op func gempagetitle(conn *irc.Conn, line *irc.Line) {
158 cfb62e6e 2022-01-08 op matches := gemlink.FindAllString(line.Text(), -1)
160 cfb62e6e 2022-01-08 op for _, link := range matches {
161 cfb62e6e 2022-01-08 op log.Println("fetching", link, "...")
162 cfb62e6e 2022-01-08 op title, err := geminiTitle(link)
163 cfb62e6e 2022-01-08 op if err != nil {
167 cfb62e6e 2022-01-08 op conn.Privmsg(channel, title)
171 56842f40 2022-06-29 op func pong(conn *irc.Conn, line *irc.Line) {
172 56842f40 2022-06-29 op if line.Text() != ",ping" {
175 56842f40 2022-06-29 op conn.Privmsg(
181 7cc05214 2021-04-27 op func dostuff(conn *irc.Conn, line *irc.Line) {
182 7cc05214 2021-04-27 op matrix2gemini(conn, line)
183 88370dfe 2021-11-07 op messageTooLong(conn, line)
184 cfb62e6e 2022-01-08 op wwwpagetitle(conn, line)
185 cfb62e6e 2022-01-08 op gempagetitle(conn, line)
186 56842f40 2022-06-29 op pong(conn, line)
190 7cc05214 2021-04-27 op func main() {
193 7cc05214 2021-04-27 op cfg := irc.NewConfig("gemitbot")
194 7cc05214 2021-04-27 op cfg.SSL = true
195 d0286003 2021-07-30 op cfg.SSLConfig = &tls.Config{ServerName: "irc.libera.chat"}
196 d0286003 2021-07-30 op cfg.Server = "irc.libera.chat:7000"
197 7cc05214 2021-04-27 op cfg.NewNick = func(n string) string { return n + "^" }
199 7cc05214 2021-04-27 op c := irc.Client(cfg)
201 7cc05214 2021-04-27 op c.HandleFunc(irc.CONNECTED, func(conn *irc.Conn, line *irc.Line) {
202 7cc05214 2021-04-27 op log.Println("connected, joining", channel)
203 7cc05214 2021-04-27 op conn.Join(channel)
206 7cc05214 2021-04-27 op c.HandleFunc(irc.PRIVMSG, dostuff)
207 7cc05214 2021-04-27 op c.HandleFunc(irc.ACTION, dostuff)
209 7cc05214 2021-04-27 op quit := make(chan bool)
211 7cc05214 2021-04-27 op c.HandleFunc(irc.DISCONNECTED, func(conn *irc.Conn, line *irc.Line) {
215 7cc05214 2021-04-27 op if err := c.Connect(); err != nil {
216 7cc05214 2021-04-27 op log.Fatalln("connection error:", err)