bump irc-go to v0.1.0

vendor/github.com/ergochat/irc-go/LICENSE

@@ -1,4 +1,5 @@
-Copyright (c) 2016-2017 Daniel Oaks
+Copyright (c) 2016-2021 Daniel Oaks
+Copyright (c) 2018-2021 Shivaram Lingamneni
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted, provided that the above

vendor/github.com/ergochat/irc-go/ircmsg/message.go

@@ -65,7 +65,7 @@ var (
 // extended by the IRCv3 Message Tags specification with the introduction
 // of message tags.
 type Message struct {
-	Prefix         string
+	Source         string
 	Command        string
 	Params         []string
 	forceTrailing  bool
@@ -154,6 +154,22 @@ func (msg *Message) ClientOnlyTags() map[string]string {
 	return msg.clientOnlyTags
 }
 
+// Nick returns the name component of the message source (typically a nickname,
+// but possibly a server name).
+func (msg *Message) Nick() (nick string) {
+	nuh, err := ParseNUH(msg.Source)
+	if err == nil {
+		return nuh.Name
+	}
+	return
+}
+
+// NUH returns the source of the message as a parsed NUH ("nick-user-host");
+// if the source is not well-formed as a NUH, it returns an error.
+func (msg *Message) NUH() (nuh NUH, err error) {
+	return ParseNUH(msg.Source)
+}
+
 // ParseLine creates and returns a message from the given IRC line.
 func ParseLine(line string) (ircmsg Message, err error) {
 	return parseLine(line, 0, 0)
@@ -229,15 +245,15 @@ func parseLine(line string, maxTagDataLength int, truncateLen int) (ircmsg Messa
 	// by one or more ASCII SPACE characters"
 	line = trimInitialSpaces(line)
 
-	// prefix
+	// source
 	if 0 < len(line) && line[0] == ':' {
-		prefixEnd := strings.IndexByte(line, ' ')
-		if prefixEnd == -1 {
+		sourceEnd := strings.IndexByte(line, ' ')
+		if sourceEnd == -1 {
 			return ircmsg, ErrorLineIsEmpty
 		}
-		ircmsg.Prefix = line[1:prefixEnd]
-		// skip over the prefix and the separating space
-		line = line[prefixEnd+1:]
+		ircmsg.Source = line[1:sourceEnd]
+		// skip over the source and the separating space
+		line = line[sourceEnd+1:]
 	}
 
 	line = trimInitialSpaces(line)
@@ -312,8 +328,8 @@ func (ircmsg *Message) parseTags(tags string) (err error) {
 }
 
 // MakeMessage provides a simple way to create a new Message.
-func MakeMessage(tags map[string]string, prefix string, command string, params ...string) (ircmsg Message) {
-	ircmsg.Prefix = prefix
+func MakeMessage(tags map[string]string, source string, command string, params ...string) (ircmsg Message) {
+	ircmsg.Source = source
 	ircmsg.Command = command
 	ircmsg.Params = params
 	ircmsg.UpdateTags(tags)
@@ -411,9 +427,9 @@ func (ircmsg *Message) line(tagLimit, clientOnlyTagDataLimit, serverAddedTagData
 		return nil, ErrorTagsTooLong
 	}
 
-	if len(ircmsg.Prefix) > 0 {
+	if len(ircmsg.Source) > 0 {
 		buf.WriteByte(':')
-		buf.WriteString(ircmsg.Prefix)
+		buf.WriteString(ircmsg.Source)
 		buf.WriteByte(' ')
 	}
 

vendor/github.com/ergochat/irc-go/ircmsg/userhost.go

@@ -0,0 +1,61 @@
+// written by Daniel Oaks <daniel@danieloaks.net>
+// released under the ISC license
+
+package ircmsg
+
+import (
+	"errors"
+	"strings"
+)
+
+var (
+	MalformedNUH = errors.New("NUH is malformed")
+)
+
+// NUH holds a parsed name!user@host source ("prefix") of an IRC message.
+// The Name member will be either a nickname (in the case of a user-initiated
+// message) or a server name (in the case of a server-initiated numeric,
+// command, or NOTICE).
+type NUH struct {
+	Name string
+	User string
+	Host string
+}
+
+// ParseNUH parses a NUH source of an IRC message into its constituent parts;
+// name (nickname or server name), username, and hostname.
+func ParseNUH(in string) (out NUH, err error) {
+	if len(in) == 0 {
+		return out, MalformedNUH
+	}
+
+	hostStart := strings.IndexByte(in, '@')
+	if hostStart != -1 {
+		out.Host = in[hostStart+1:]
+		in = in[:hostStart]
+	}
+	userStart := strings.IndexByte(in, '!')
+	if userStart != -1 {
+		out.User = in[userStart+1:]
+		in = in[:userStart]
+	}
+	out.Name = in
+
+	return
+}
+
+// Canonical returns the canonical string representation of the NUH.
+func (nuh *NUH) Canonical() (result string) {
+	var out strings.Builder
+	out.Grow(len(nuh.Name) + len(nuh.User) + len(nuh.Host) + 2)
+	out.WriteString(nuh.Name)
+	if len(nuh.User) != 0 {
+		out.WriteByte('!')
+		out.WriteString(nuh.User)
+	}
+	if len(nuh.Host) != 0 {
+		out.WriteByte('@')
+		out.WriteString(nuh.Host)
+	}
+	return out.String()
+}

vendor/github.com/ergochat/irc-go/ircutils/userhost.go

@@ -1,56 +0,0 @@
-// written by Daniel Oaks <daniel@danieloaks.net>
-// released under the ISC license
-
-package ircutils
-
-import "strings"
-
-// UserHost holds a username+host combination
-type UserHost struct {
-	Nick string
-	User string
-	Host string
-}
-
-// ParseUserhost takes a userhost string and returns a UserHost instance.
-func ParseUserhost(userhost string) UserHost {
-	var uh UserHost
-
-	if len(userhost) == 0 {
-		return uh
-	}
-
-	if strings.Contains(userhost, "!") {
-		usersplit := strings.SplitN(userhost, "!", 2)
-		var rest string
-		if len(usersplit) == 2 {
-			uh.Nick = usersplit[0]
-			rest = usersplit[1]
-		} else {
-			rest = usersplit[0]
-		}
-
-		hostsplit := strings.SplitN(rest, "@", 2)
-		if len(hostsplit) == 2 {
-			uh.User = hostsplit[0]
-			uh.Host = hostsplit[1]
-		} else {
-			uh.User = hostsplit[0]
-		}
-	} else {
-		hostsplit := strings.SplitN(userhost, "@", 2)
-		if len(hostsplit) == 2 {
-			uh.Nick = hostsplit[0]
-			uh.Host = hostsplit[1]
-		} else {
-			uh.User = hostsplit[0]
-		}
-	}
-
-	return uh
-}
-
-// // Canonical returns the canonical string representation of the userhost.
-// func (uh *UserHost) Canonical() string {
-// 	return ""
-// }