1 files changed, 144 insertions, 0 deletions
diff --git a/vendor/github.com/sorcix/irc/ctcp/ctcp.go b/vendor/github.com/sorcix/irc/ctcp/ctcp.go
new file mode 100644
index 00000000..7ead788d
--- /dev/null
+++ b/vendor/github.com/sorcix/irc/ctcp/ctcp.go
@@ -0,0 +1,144 @@
+// Copyright 2014 Vic Demuzere
+//
+// Use of this source code is governed by the MIT license.
+
+package ctcp
+
+// Sources:
+// http://www.irchelp.org/irchelp/rfc/ctcpspec.html
+// http://www.kvirc.net/doc/doc_ctcp_handling.html
+
+import (
+	"fmt"
+	"runtime"
+	"strings"
+	"time"
+)
+
+// Various constants used for formatting CTCP messages.
+const (
+	delimiter byte = 0x01 // Prefix and suffix for CTCP tagged messages.
+	space     byte = 0x20 // Token separator
+
+	empty = "" // The empty string
+
+	timeFormat    = time.RFC1123Z
+	versionFormat = "Go v%s (" + runtime.GOOS + ", " + runtime.GOARCH + ")"
+)
+
+// Tags extracted from the CTCP spec.
+const (
+	ACTION     = "ACTION"
+	PING       = "PING"
+	PONG       = "PONG"
+	VERSION    = "VERSION"
+	USERINFO   = "USERINFO"
+	CLIENTINFO = "CLIENTINFO"
+	FINGER     = "FINGER"
+	SOURCE     = "SOURCE"
+	TIME       = "TIME"
+)
+
+// Decode attempts to decode CTCP tagged data inside given message text.
+//
+// If the message text does not contain tagged data, ok will be false.
+//
+//    <text>  ::= <delim> <tag> [<SPACE> <message>] <delim>
+//    <delim> ::= 0x01
+//
+func Decode(text string) (tag, message string, ok bool) {
+
+	// Fast path, return if this text does not contain a CTCP message.
+	if len(text) < 3 || text[0] != delimiter || text[len(text)-1] != delimiter {
+		return empty, empty, false
+	}
+
+	s := strings.IndexByte(text, space)
+
+	if s < 0 {
+
+		// Messages may contain only a tag.
+		return text[1 : len(text)-1], empty, true
+	}
+
+	return text[1:s], text[s+1 : len(text)-1], true
+}
+
+// Encode returns the IRC message text for CTCP tagged data.
+//
+//    <text>  ::= <delim> <tag> [<SPACE> <message>] <delim>
+//    <delim> ::= 0x01
+//
+func Encode(tag, message string) (text string) {
+
+	switch {
+
+	// We can't build a valid CTCP tagged message without at least a tag.
+	case len(tag) <= 0:
+		return empty
+
+	// Tagged data with a message
+	case len(message) > 0:
+		return string(delimiter) + tag + string(space) + message + string(delimiter)
+
+	// Tagged data without a message
+	default:
+		return string(delimiter) + tag + string(delimiter)
+
+	}
+}
+
+// Action is a shortcut for Encode(ctcp.ACTION, message).
+func Action(message string) string {
+	return Encode(ACTION, message)
+}
+
+// Ping is a shortcut for Encode(ctcp.PING, message).
+func Ping(message string) string {
+	return Encode(PING, message)
+}
+
+// Pong is a shortcut for Encode(ctcp.PONG, message).
+func Pong(message string) string {
+	return Encode(PONG, message)
+}
+
+// Version is a shortcut for Encode(ctcp.VERSION, message).
+func Version(message string) string {
+	return Encode(VERSION, message)
+}
+
+// VersionReply is a shortcut for ENCODE(ctcp.VERSION, go version info).
+func VersionReply() string {
+	return Encode(VERSION, fmt.Sprintf(versionFormat, runtime.Version()))
+}
+
+// UserInfo is a shortcut for Encode(ctcp.USERINFO, message).
+func UserInfo(message string) string {
+	return Encode(USERINFO, message)
+}
+
+// ClientInfo is a shortcut for Encode(ctcp.CLIENTINFO, message).
+func ClientInfo(message string) string {
+	return Encode(CLIENTINFO, message)
+}
+
+// Finger is a shortcut for Encode(ctcp.FINGER, message).
+func Finger(message string) string {
+	return Encode(FINGER, message)
+}
+
+// Source is a shortcut for Encode(ctcp.SOURCE, message).
+func Source(message string) string {
+	return Encode(SOURCE, message)
+}
+
+// Time is a shortcut for Encode(ctcp.TIME, message).
+func Time(message string) string {
+	return Encode(TIME, message)
+}
+
+// TimeReply is a shortcut for Encode(ctcp.TIME, currenttime).
+func TimeReply() string {
+	return Encode(TIME, time.Now().Format(timeFormat))
+}