GoToSocial/internal/text/plain.go

78 lines
2.3 KiB
Go

/*
GoToSocial
Copyright (C) 2021-2023 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"
"context"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/extension"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/renderer/html"
"github.com/yuin/goldmark/util"
)
func (f *formatter) FromPlain(ctx context.Context, pmf gtsmodel.ParseMentionFunc, authorID string, statusID string, plain string) *FormatResult {
result := &FormatResult{
Mentions: []*gtsmodel.Mention{},
Tags: []*gtsmodel.Tag{},
Emojis: []*gtsmodel.Emoji{},
}
// parse markdown text into html, using custom renderer to add hashtag/mention links
md := goldmark.New(
goldmark.WithRendererOptions(
html.WithXHTML(),
html.WithHardWraps(),
),
goldmark.WithParser(
parser.NewParser(
parser.WithBlockParsers(
util.Prioritized(newPlaintextParser(), 500),
),
),
),
goldmark.WithExtensions(
&customRenderer{f, ctx, pmf, authorID, statusID, false, result},
extension.Linkify, // turns URLs into links
),
)
var htmlContentBytes bytes.Buffer
err := md.Convert([]byte(plain), &htmlContentBytes)
if err != nil {
log.Errorf(ctx, "error formatting plaintext to HTML: %s", err)
}
result.HTML = htmlContentBytes.String()
// clean anything dangerous out of the HTML
result.HTML = SanitizeHTML(result.HTML)
// shrink ray
result.HTML, err = m.String("text/html", result.HTML)
if err != nil {
log.Errorf(ctx, "error minifying HTML: %s", err)
}
return result
}