soju/msgstore/znclog/reader.go

159 lines
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package znclog
import (
"fmt"
"strings"
"time"
"gopkg.in/irc.v4"
"git.sr.ht/~emersion/soju/database"
"git.sr.ht/~emersion/soju/xirc"
)
func UnmarshalLine(line string, user *database.User, network *database.Network, entity string, ref time.Time, events bool) (*irc.Message, time.Time, error) {
var hour, minute, second int
_, err := fmt.Sscanf(line, "[%02d:%02d:%02d] ", &hour, &minute, &second)
if err != nil {
return nil, time.Time{}, fmt.Errorf("malformed timestamp prefix: %v", err)
}
line = line[11:]
var cmd string
var prefix *irc.Prefix
var params []string
if events && strings.HasPrefix(line, "*** ") {
parts := strings.SplitN(line[4:], " ", 2)
if len(parts) != 2 {
return nil, time.Time{}, nil
}
switch parts[0] {
case "Joins:", "Parts:", "Quits:":
args := strings.SplitN(parts[1], " ", 3)
if len(args) < 2 {
return nil, time.Time{}, nil
}
nick := args[0]
mask := strings.TrimSuffix(strings.TrimPrefix(args[1], "("), ")")
maskParts := strings.SplitN(mask, "@", 2)
if len(maskParts) != 2 {
return nil, time.Time{}, nil
}
prefix = &irc.Prefix{
Name: nick,
User: maskParts[0],
Host: maskParts[1],
}
var reason string
if len(args) > 2 {
reason = strings.TrimSuffix(strings.TrimPrefix(args[2], "("), ")")
}
switch parts[0] {
case "Joins:":
cmd = "JOIN"
params = []string{entity}
case "Parts:":
cmd = "PART"
if reason != "" {
params = []string{entity, reason}
} else {
params = []string{entity}
}
case "Quits:":
cmd = "QUIT"
if reason != "" {
params = []string{reason}
}
}
default:
nick := parts[0]
rem := parts[1]
if r := strings.TrimPrefix(rem, "is now known as "); r != rem {
cmd = "NICK"
prefix = &irc.Prefix{
Name: nick,
}
params = []string{r}
} else if r := strings.TrimPrefix(rem, "was kicked by "); r != rem {
args := strings.SplitN(r, " ", 2)
if len(args) != 2 {
return nil, time.Time{}, nil
}
cmd = "KICK"
prefix = &irc.Prefix{
Name: args[0],
}
reason := strings.TrimSuffix(strings.TrimPrefix(args[1], "("), ")")
params = []string{entity, nick}
if reason != "" {
params = append(params, reason)
}
} else if r := strings.TrimPrefix(rem, "changes topic to "); r != rem {
cmd = "TOPIC"
prefix = &irc.Prefix{
Name: nick,
}
topic := strings.TrimSuffix(strings.TrimPrefix(r, "'"), "'")
params = []string{entity, topic}
} else if r := strings.TrimPrefix(rem, "sets mode: "); r != rem {
cmd = "MODE"
prefix = &irc.Prefix{
Name: nick,
}
params = append([]string{entity}, strings.Split(r, " ")...)
} else {
return nil, time.Time{}, nil
}
}
} else {
var sender, text string
if strings.HasPrefix(line, "<") {
cmd = "PRIVMSG"
parts := strings.SplitN(line[1:], "> ", 2)
if len(parts) != 2 {
return nil, time.Time{}, nil
}
sender, text = parts[0], parts[1]
} else if strings.HasPrefix(line, "-") {
cmd = "NOTICE"
parts := strings.SplitN(line[1:], "- ", 2)
if len(parts) != 2 {
return nil, time.Time{}, nil
}
sender, text = parts[0], parts[1]
} else if strings.HasPrefix(line, "* ") {
cmd = "PRIVMSG"
parts := strings.SplitN(line[2:], " ", 2)
if len(parts) != 2 {
return nil, time.Time{}, nil
}
sender, text = parts[0], "\x01ACTION "+parts[1]+"\x01"
} else {
return nil, time.Time{}, nil
}
prefix = &irc.Prefix{Name: sender}
if entity == sender {
// This is a direct message from a user to us. We don't store own
// our nickname in the logs, so grab it from the network settings.
// Not very accurate since this may not match our nick at the time
// the message was received, but we can't do a lot better.
entity = database.GetNick(user, network)
}
params = []string{entity, text}
}
year, month, day := ref.Date()
t := time.Date(year, month, day, hour, minute, second, 0, time.Local)
msg := &irc.Message{
Tags: map[string]string{
"time": xirc.FormatServerTime(t),
},
Prefix: prefix,
Command: cmd,
Params: params,
}
return msg, t, nil
}