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miniflux/internal/reader/rdf/rdf.go
2023-09-24 22:37:33 -07:00

124 lines
2.6 KiB
Go

// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package rdf // import "miniflux.app/v2/internal/reader/rdf"
import (
"encoding/xml"
"html"
"log/slog"
"strings"
"time"
"miniflux.app/v2/internal/crypto"
"miniflux.app/v2/internal/model"
"miniflux.app/v2/internal/reader/date"
"miniflux.app/v2/internal/reader/dublincore"
"miniflux.app/v2/internal/reader/sanitizer"
"miniflux.app/v2/internal/urllib"
)
type rdfFeed struct {
XMLName xml.Name `xml:"RDF"`
Title string `xml:"channel>title"`
Link string `xml:"channel>link"`
Items []rdfItem `xml:"item"`
dublincore.DublinCoreFeedElement
}
func (r *rdfFeed) Transform(baseURL string) *model.Feed {
var err error
feed := new(model.Feed)
feed.Title = sanitizer.StripTags(r.Title)
feed.FeedURL = baseURL
feed.SiteURL, err = urllib.AbsoluteURL(baseURL, r.Link)
if err != nil {
feed.SiteURL = r.Link
}
for _, item := range r.Items {
entry := item.Transform()
if entry.Author == "" && r.DublinCoreCreator != "" {
entry.Author = r.GetSanitizedCreator()
}
if entry.URL == "" {
entry.URL = feed.SiteURL
} else {
entryURL, err := urllib.AbsoluteURL(feed.SiteURL, entry.URL)
if err == nil {
entry.URL = entryURL
}
}
feed.Entries = append(feed.Entries, entry)
}
return feed
}
type rdfItem struct {
Title string `xml:"title"`
Link string `xml:"link"`
Description string `xml:"description"`
dublincore.DublinCoreItemElement
}
func (r *rdfItem) Transform() *model.Entry {
entry := model.NewEntry()
entry.Title = r.entryTitle()
entry.Author = r.entryAuthor()
entry.URL = r.entryURL()
entry.Content = r.entryContent()
entry.Hash = r.entryHash()
entry.Date = r.entryDate()
return entry
}
func (r *rdfItem) entryTitle() string {
return html.UnescapeString(strings.TrimSpace(r.Title))
}
func (r *rdfItem) entryContent() string {
switch {
case r.DublinCoreContent != "":
return r.DublinCoreContent
default:
return r.Description
}
}
func (r *rdfItem) entryAuthor() string {
return r.GetSanitizedCreator()
}
func (r *rdfItem) entryURL() string {
return strings.TrimSpace(r.Link)
}
func (r *rdfItem) entryDate() time.Time {
if r.DublinCoreDate != "" {
result, err := date.Parse(r.DublinCoreDate)
if err != nil {
slog.Warn("Unable to parse date from RDF feed",
slog.String("date", r.DublinCoreDate),
slog.String("link", r.Link),
slog.Any("error", err),
)
return time.Now()
}
return result
}
return time.Now()
}
func (r *rdfItem) entryHash() string {
value := r.Link
if value == "" {
value = r.Title + r.Description
}
return crypto.Hash(value)
}