Created
August 6, 2014 02:27
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chat program in go
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package chat | |
import "net/http" | |
import "sync" | |
import "html/template" | |
import "time" | |
import "strings" | |
type chatpost struct{ | |
text string | |
when time.Time | |
ip string | |
} | |
var chatlock sync.Mutex | |
//var chatstrs [20]string | |
var chatstrs [20]chatpost | |
var nicks map[string] string = make(map[string]string) | |
var numchats int | |
func startswith(source string, lookfor string) string{ | |
if len(source) <= len(lookfor){return ""} | |
if source[:len(lookfor)] != lookfor{return ""} | |
return source[len(lookfor):] | |
} | |
func ChatFunc( | |
w http.ResponseWriter, | |
r *http.Request) { | |
chatlock.Lock() | |
if r.Method == "POST"{ | |
st := r.PostFormValue("chat") | |
chatstrs[numchats].ip = strings.Split(r.RemoteAddr, ":")[0] | |
chatstrs[numchats].text = st | |
chatstrs[numchats].when = time.Now() | |
if rem := startswith(chatstrs[numchats].text, "my name is "); rem != ""{nicks[chatstrs[numchats].ip] = rem} | |
if rem := startswith(chatstrs[numchats].text, "jag heter "); rem != ""{nicks[chatstrs[numchats].ip] = rem} | |
numchats ++ | |
numchats %= 20 | |
} | |
w.Write([]byte("<html><body>")) | |
w.Write([]byte("<noscript>NOTE:automatic updating will not work without javascript</noscript>")) | |
w.Write([]byte("<script type=\"text/javascript\">setInterval(function(){var r = new XMLHttpRequest();r.onload=function(){document.getElementById(\"responses\").innerHTML = this.responseText.slice(this.responseText.indexOf(\"d\"+\"iv\")+19,this.responseText.lastIndexOf(\"d\"+\"iv\")-2);};r.open(\"get\", \"chat\", true);r.send()}, 3000)</script>")) | |
w.Write([]byte("<div id=\"responses\">")) | |
// w.Write([]byte("<scrypt type=\"text/javascript\">document.write(\"this page requires no javascript\");</script>")) | |
for i := (numchats+1)%20;i!= numchats;i=(i+1)%20{ | |
if strings.Split(r.RemoteAddr, ":")[0] == chatstrs[i].ip{w.Write([]byte("<i>"))} | |
if nick, ok := nicks[chatstrs[i].ip]; ok{w.Write([]byte(template.HTMLEscapeString(nick)))}else{w.Write([]byte(chatstrs[i].ip))} | |
w.Write([]byte(": ")) | |
if startswith(chatstrs[i].text, "spoiler:") != ""{w.Write([]byte("<span style=\"background:black\">"))} | |
if startswith(chatstrs[i].text, "http://") != "" || startswith(chatstrs[i].text, "https://") != ""{w.Write([]byte("<a target=\"blank\" href=\""));w.Write([]byte(template.HTMLEscapeString(chatstrs[i].text)));w.Write([]byte("\">"))} | |
w.Write([]byte(template.HTMLEscapeString(chatstrs[i].text))) | |
if startswith(chatstrs[i].text, "spoiler:") != ""{w.Write([]byte("</span>"))} | |
if startswith(chatstrs[i].text, "http://") != "" || startswith(chatstrs[i].text, "https://") != ""{w.Write([]byte("</a>"))} | |
w.Write([]byte("(")) | |
//w.Write([]byte(strings.Split(time.Since(chatstrs[i].when).String(), ".")[0]+"s")) | |
w.Write([]byte(time.Since(chatstrs[i].when).String())) | |
w.Write([]byte(" ago)")) | |
w.Write([]byte("<br/>")) | |
if strings.Split(r.RemoteAddr, ":")[0] == chatstrs[i].ip{w.Write([]byte("</i>"))} | |
}//TODO:remove old things from nicks | |
w.Write([]byte("</div>")) | |
w.Write([]byte("<form action=\"chat\" method=\"post\">")) | |
w.Write([]byte("<input type=\"text\" name=\"chat\" autofocus=\"autofocus\"/>")) | |
w.Write([]byte("<input type=\"submit\" name=\"chat\"/>")) | |
w.Write([]byte("")) | |
w.Write([]byte("")) | |
w.Write([]byte("</form></body></html>")) | |
chatlock.Unlock()//que | |
} |
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