forked from mirrors/gotosocial
52109776f6
* [bugfix] Fix unicode-unaware word boundary check in hashtag regex Go `\b` does not care for Unicode, and without lookahead, the workarounds got very ugly. So I replaced the regex with a parser. The parser runs in O(n) time and performance should not be affected. * [bugfix] Add back hashtag max length and add tests for it
112 lines
3.5 KiB
Go
112 lines
3.5 KiB
Go
/*
|
|
GoToSocial
|
|
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package text
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"strings"
|
|
"unicode"
|
|
|
|
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
|
|
"github.com/superseriousbusiness/gotosocial/internal/log"
|
|
"github.com/superseriousbusiness/gotosocial/internal/regexes"
|
|
"github.com/superseriousbusiness/gotosocial/internal/util"
|
|
)
|
|
|
|
func (f *formatter) ReplaceTags(ctx context.Context, in string, tags []*gtsmodel.Tag) string {
|
|
spans := util.FindHashtagSpansInText(in)
|
|
|
|
if len(spans) == 0 {
|
|
return in
|
|
}
|
|
|
|
var b strings.Builder
|
|
i := 0
|
|
|
|
spans:
|
|
for _, t := range spans {
|
|
b.WriteString(in[i:t.First])
|
|
i = t.Second
|
|
tagAsEntered := in[t.First+1 : t.Second]
|
|
|
|
for _, tag := range tags {
|
|
if strings.EqualFold(tagAsEntered, tag.Name) {
|
|
// replace the #tag with the formatted tag content
|
|
// `<a href="tag.URL" class="mention hashtag" rel="tag">#<span>tagAsEntered</span></a>
|
|
b.WriteString(`<a href="`)
|
|
b.WriteString(tag.URL)
|
|
b.WriteString(`" class="mention hashtag" rel="tag">#<span>`)
|
|
b.WriteString(tagAsEntered)
|
|
b.WriteString(`</span></a>`)
|
|
continue spans
|
|
}
|
|
}
|
|
|
|
b.WriteString(in[t.First:t.Second])
|
|
}
|
|
|
|
// Get the last bits.
|
|
i = spans[len(spans)-1].Second
|
|
b.WriteString(in[i:])
|
|
|
|
return b.String()
|
|
}
|
|
|
|
func (f *formatter) ReplaceMentions(ctx context.Context, in string, mentions []*gtsmodel.Mention) string {
|
|
return regexes.ReplaceAllStringFunc(regexes.MentionFinder, in, func(match string, buf *bytes.Buffer) string {
|
|
// we have a match, trim any spaces
|
|
matchTrimmed := strings.TrimSpace(match)
|
|
|
|
// check through mentions to find what we're matching
|
|
for _, menchie := range mentions {
|
|
if strings.EqualFold(matchTrimmed, menchie.NameString) {
|
|
// make sure we have an account attached to this mention
|
|
if menchie.TargetAccount == nil {
|
|
a, err := f.db.GetAccountByID(ctx, menchie.TargetAccountID)
|
|
if err != nil {
|
|
log.Errorf("error getting account with id %s from the db: %s", menchie.TargetAccountID, err)
|
|
return match
|
|
}
|
|
menchie.TargetAccount = a
|
|
}
|
|
|
|
// The mention's target is our target
|
|
targetAccount := menchie.TargetAccount
|
|
|
|
// Add any dropped space from match
|
|
if unicode.IsSpace(rune(match[0])) {
|
|
buf.WriteByte(match[0])
|
|
}
|
|
|
|
// replace the mention with the formatted mention content
|
|
// <span class="h-card"><a href="targetAccount.URL" class="u-url mention">@<span>targetAccount.Username</span></a></span>
|
|
buf.WriteString(`<span class="h-card"><a href="`)
|
|
buf.WriteString(targetAccount.URL)
|
|
buf.WriteString(`" class="u-url mention">@<span>`)
|
|
buf.WriteString(targetAccount.Username)
|
|
buf.WriteString(`</span></a></span>`)
|
|
return buf.String()
|
|
}
|
|
}
|
|
|
|
// the match wasn't in the list of mentions for whatever reason, so just return the match as we found it so nothing changes
|
|
return match
|
|
})
|
|
}
|