organize like a proper go package

src/irc/net.go

@@ -1,72 +0,0 @@
-package irc
-
-import (
-	"bufio"
-	"log"
-	"net"
-	"strings"
-)
-
-const (
-	DEBUG_NET = false
-)
-
-func readTrimmedLine(reader *bufio.Reader) (string, error) {
-	line, err := reader.ReadString('\n')
-	if err != nil {
-		return "", err
-	}
-	return strings.TrimSpace(line), nil
-}
-
-// Adapt `net.Conn` to a `chan string`.
-func StringReadChan(conn net.Conn) <-chan string {
-	ch := make(chan string)
-	reader := bufio.NewReader(conn)
-	go func() {
-		for {
-			line, err := readTrimmedLine(reader)
-			if err != nil {
-				break
-			}
-			if DEBUG_NET {
-				log.Printf("%s → %s : %s", conn.RemoteAddr(), conn.LocalAddr(), line)
-			}
-			ch <- line
-		}
-		close(ch)
-	}()
-	return ch
-}
-
-func StringWriteChan(conn net.Conn) chan<- string {
-	ch := make(chan string)
-	writer := bufio.NewWriter(conn)
-	go func() {
-		for str := range ch {
-			if DEBUG_NET {
-				log.Printf("%s ← %s : %s", conn.RemoteAddr(), conn.LocalAddr(), str)
-			}
-			if _, err := writer.WriteString(str + "\r\n"); err != nil {
-				break
-			}
-			writer.Flush()
-		}
-		close(ch)
-	}()
-
-	return ch
-}
-
-func LookupHostname(addr net.Addr) string {
-	addrStr := addr.String()
-	ipaddr, _, err := net.SplitHostPort(addrStr)
-	if err != nil {
-		return addrStr
-	}
-	names, err := net.LookupHost(ipaddr)
-	if err != nil {
-		return ipaddr
-	}
-	return names[0]
-}