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/*
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"
"html"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/regexes"
)
// Emojify replaces shortcodes in `inputText` with the emoji in `emojis`.
//
// Callers should ensure that inputText and resulting text are escaped
// appropriately depending on what they're used for.
func Emojify(emojis []apimodel.Emoji, inputText string) string {
emojisMap := make(map[string]apimodel.Emoji, len(emojis))
for _, emoji := range emojis {
shortcode := ":" + emoji.Shortcode + ":"
emojisMap[shortcode] = emoji
}
return regexes.ReplaceAllStringFunc(
regexes.EmojiFinder,
inputText,
func(shortcode string, buf *bytes.Buffer) string {
// Look for emoji according to this shortcode
emoji, ok := emojisMap[shortcode]
if !ok {
return shortcode
}
// Escape raw emoji content
safeURL := html.EscapeString(emoji.URL)
safeCode := html.EscapeString(emoji.Shortcode)
// Write HTML emoji repr to buffer
buf.WriteString(`<img src="`)
buf.WriteString(safeURL)
buf.WriteString(`" title=":`)
buf.WriteString(safeCode)
buf.WriteString(`:" alt=":`)
buf.WriteString(safeCode)
buf.WriteString(`:" class="emoji"/>`)
return buf.String()
},
)
}
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