// 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 .
package message
import (
"bytes"
escape "html"
"strings"
"github.com/andybalholm/cascadia"
"golang.org/x/net/html"
)
func plaintextToHTML(text string) (output string) {
text = escape.EscapeString(text)
text = strings.Replace(text, "\n\r", "
", -1)
text = strings.Replace(text, "\r\n", "
", -1)
text = strings.Replace(text, "\n", "
", -1)
text = strings.Replace(text, "\r", "
", -1)
return "" + text + "
"
}
func stripHTML(input string) (stripped string, err error) {
reader := strings.NewReader(input)
doc, _ := html.Parse(reader)
body := cascadia.MustCompile("body").MatchFirst(doc)
var buf1 bytes.Buffer
if err = html.Render(&buf1, body); err != nil {
stripped = input
return
}
stripped = buf1.String()
// Handle double body tags edge case.
if strings.Index(stripped, "")
if startIndex < 5 {
return
}
stripped = stripped[startIndex+1:]
// Closing body tag is optional.
closingIndex := strings.Index(stripped, " ")
if closingIndex > -1 {
stripped = stripped[:closingIndex]
}
}
return
}
func addOuterHTMLTags(input string) (output string) {
return "