joining channels

1 files changed, 78 insertions, 0 deletions

diff --git a/client/command.go b/client/command.go
new file mode 100644
index 0000000..f505f9a
--- /dev/null
+++ b/client/command.go
@@ -0,0 +1,78 @@
+package main
+
+func isCommand(text string) (bool, string) {
+	if text[0] == '/' {
+		if len(text) > 1 && text[1] == '/' {
+			text = text[1:]
+			return false, text
+		}
+		return true, text
+	}
+	return false, text
+}
+
+func (a *application) processCommand(text string) {
+	text = text[1:]
+	args := []string {""}
+	escaped := false
+	quoted := false
+	for _, c := range text {
+		if escaped {
+			args[len(args) - 1] += string(c)
+			continue
+		}
+		switch c {
+		case '\\':
+			escaped = true
+		case '"':
+			quoted = !quoted
+		case ' ':
+			if !quoted {
+				if args[len(args) - 1] != "" {
+					args = append(args, "")
+				}
+				break
+			}
+			fallthrough
+		default:
+			args[len(args) - 1] += string(c)
+		}
+	}
+	if len(text) > len(args[0]) {
+		text = text[len(args[0]) + 1:]
+	} else {
+		text = ""
+	}
+	a.doCommand(args[0], args[1:], text)
+}
+
+func (a *application) doCommand(command string, args []string, text string) {
+	if !a.connected {
+		return
+	}
+	argN := func(n int) {
+		if len(args) != n {
+			a.cmdWindow.err(
+				"%s: expected %d arguments, was %d", command, n, len(args),
+			)
+		}
+	}
+	switch command {
+	case "nick":
+		a.setNick(text)
+	case "join":
+		argN(1)
+		if a.authenticated {
+			a.join(args[0])
+		}
+	case "create":
+		argN(1)
+		if a.authenticated {
+			a.createChannel(args[0])
+		}
+	case "quit":
+		a.quit = true
+	default:
+		a.cmdWindow.err("unknown command: /" + command)
+	}
+}