Files
proton-bridge/pkg/message/rfc5322/obs_zone.go
2020-11-03 16:21:06 +01:00

83 lines
2.1 KiB
Go

// Copyright (c) 2020 Proton Technologies AG
//
// This file is part of ProtonMail Bridge.
//
// ProtonMail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ProtonMail Bridge 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
package rfc5322
import (
"errors"
"strings"
"time"
"github.com/ProtonMail/proton-bridge/pkg/message/rfc5322/parser"
"github.com/sirupsen/logrus"
)
type obsZone struct {
location *time.Location
}
func (w *walker) EnterObsZone(ctx *parser.ObsZoneContext) {
logrus.WithField("text", ctx.GetText()).Trace("Entering obsZone")
loc := time.UTC
switch strings.ToLower(ctx.GetText()) {
case "ut":
loc = time.FixedZone(ctx.GetText(), 0)
case "utc":
loc = time.FixedZone(ctx.GetText(), 0)
case "gmt":
loc = time.FixedZone(ctx.GetText(), 0)
case "est":
loc = time.FixedZone(ctx.GetText(), -5*60*60)
case "edt":
loc = time.FixedZone(ctx.GetText(), -4*60*60)
case "cst":
loc = time.FixedZone(ctx.GetText(), -6*60*60)
case "cdt":
loc = time.FixedZone(ctx.GetText(), -5*60*60)
case "mst":
loc = time.FixedZone(ctx.GetText(), -7*60*60)
case "mdt":
loc = time.FixedZone(ctx.GetText(), -6*60*60)
case "pst":
loc = time.FixedZone(ctx.GetText(), -8*60*60)
case "pdt":
loc = time.FixedZone(ctx.GetText(), -7*60*60)
default:
w.err = errors.New("bad timezone")
}
w.enter(&obsZone{
location: loc,
})
}
func (w *walker) ExitObsZone(ctx *parser.ObsZoneContext) {
logrus.WithField("text", ctx.GetText()).Trace("Exiting obsZone")
type withObsZone interface {
withObsZone(*obsZone)
}
res := w.exit().(*obsZone)
if parent, ok := w.parent().(withObsZone); ok {
parent.withObsZone(res)
}
}