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/*
GoToSocial
Copyright (C) 2021 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 media
import (
"fmt"
"strconv"
"strings"
)
func parseFocus(focus string) (focusx, focusy float32, err error) {
if focus == "" {
return
}
spl := strings.Split(focus, ",")
if len(spl) != 2 {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
xStr := spl[0]
yStr := spl[1]
if xStr == "" || yStr == "" {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
fx, err := strconv.ParseFloat(xStr, 32)
if err != nil {
err = fmt.Errorf("improperly formatted focus %s: %s", focus, err)
return
}
if fx > 1 || fx < -1 {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
focusx = float32(fx)
fy, err := strconv.ParseFloat(yStr, 32)
if err != nil {
err = fmt.Errorf("improperly formatted focus %s: %s", focus, err)
return
}
if fy > 1 || fy < -1 {
err = fmt.Errorf("improperly formatted focus %s", focus)
return
}
focusy = float32(fy)
return
}
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