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Support rewriting messages from relaybots using ExtractNicks. Fixes #466 (#730)

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some examples:
this replaces a message like "Relaybot: <relayeduser> something interesting" to "relayeduser: something interesting"
ExtractNicks=[ [ "Relaybot", "<(.*?)>\\s+" ] ]
you can use multiple entries for multiplebots
this also replaces a message like "otherbot: (relayeduser) something else" to "relayeduser: something else"
ExtractNicks=[ [ "Relaybot", "<(.*?)>\\s+" ],[ "otherbot","\\((.*?)\\)\\s+" ]
OPTIONAL (default empty)
ExtractNicks=[ ["otherbot","<(.*?)>\\s+" ] ]
This commit is contained in:
Wim
2019-02-23 16:35:54 +01:00
committed by GitHub
parent 5095db8a43
commit 3190703dc8
4 changed files with 248 additions and 0 deletions
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39
gateway/handlers.go
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@ -9,6 +9,7 @@ import (
"os"
"path/filepath"
"regexp"
"strings"
"time"
"github.com/42wim/matterbridge/bridge"
@ -225,3 +226,41 @@ func (gw *Gateway) handleMessage(msg config.Message, dest *bridge.Bridge) []*BrM
}
return brMsgIDs
}
func (gw *Gateway) handleExtractNicks(msg *config.Message) {
var err error
br := gw.Bridges[msg.Account]
for _, outer := range br.GetStringSlice2D("ExtractNicks") {
search := outer[0]
replace := outer[1]
msg.Username, msg.Text, err = extractNick(search, replace, msg.Username, msg.Text)
if err != nil {
flog.Errorf("regexp in %s failed: %s", msg.Account, err)
break
}
}
}
// extractNick searches for a username (based on "search" a regular expression).
// if this matches it extracts a nick (based on "extract" another regular expression) from text
// and replaces username with this result.
// returns error if the regexp doesn't compile.
func extractNick(search, extract, username, text string) (string, string, error) {
re, err := regexp.Compile(search)
if err != nil {
return username, text, err
}
if re.MatchString(username) {
re, err = regexp.Compile(extract)
if err != nil {
return username, text, err
}
res := re.FindAllStringSubmatch(text, 1)
// only replace if we have exactly 1 match
if len(res) > 0 && len(res[0]) == 2 {
username = res[0][1]
text = strings.Replace(text, res[0][0], "", 1)
}
}
return username, text, nil
}