forked from Silverfish/proton-bridge
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
// Copyright (c) 2020 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ProtonMail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package rfc5322
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import (
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"fmt"
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"strings"
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"time"
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"github.com/ProtonMail/proton-bridge/pkg/message/rfc5322/parser"
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"github.com/sirupsen/logrus"
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)
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type offset struct {
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rep string
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value int
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}
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func (w *walker) EnterOffset(ctx *parser.OffsetContext) {
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logrus.WithField("text", ctx.GetText()).Trace("Entering offset")
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text := ctx.GetText()
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// NOTE: RFC5322 date-time should always begin with + or -
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// but we relax that requirement a bit due to many messages
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// in the wild that skip the +; we add the "+" if missing.
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if !strings.HasPrefix(text, "+") && !strings.HasPrefix(text, "-") {
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text = "+" + text
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}
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sgn := text[0:1]
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hrs := text[1:3]
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min := text[3:5]
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dur, err := time.ParseDuration(fmt.Sprintf("%v%vh%vm", sgn, hrs, min))
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if err != nil {
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w.err = err
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}
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w.enter(&offset{
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rep: text,
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value: int(dur.Seconds()),
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})
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}
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func (w *walker) ExitOffset(ctx *parser.OffsetContext) {
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logrus.WithField("text", ctx.GetText()).Trace("Exiting offset")
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type withOffset interface {
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withOffset(*offset)
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}
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res := w.exit().(*offset)
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if parent, ok := w.parent().(withOffset); ok {
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parent.withOffset(res)
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}
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}
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