163 lines
3.3 KiB
Go
163 lines
3.3 KiB
Go
// Copyright 2019 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package atom // import "miniflux.app/reader/atom"
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import (
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"encoding/base64"
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"html"
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"strings"
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"time"
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"miniflux.app/crypto"
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"miniflux.app/logger"
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"miniflux.app/model"
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"miniflux.app/reader/date"
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"miniflux.app/reader/sanitizer"
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"miniflux.app/url"
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)
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// Specs: http://web.archive.org/web/20060811235523/http://www.mnot.net/drafts/draft-nottingham-atom-format-02.html
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type atom03Feed struct {
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ID string `xml:"id"`
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Title atom03Text `xml:"title"`
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Author atomPerson `xml:"author"`
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Links atomLinks `xml:"link"`
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Entries []atom03Entry `xml:"entry"`
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}
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func (a *atom03Feed) Transform() *model.Feed {
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feed := new(model.Feed)
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feed.FeedURL = a.Links.firstLinkWithRelation("self")
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feed.SiteURL = a.Links.originalLink()
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feed.Title = a.Title.String()
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if feed.Title == "" {
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feed.Title = feed.SiteURL
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}
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for _, entry := range a.Entries {
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item := entry.Transform()
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entryURL, err := url.AbsoluteURL(feed.SiteURL, item.URL)
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if err == nil {
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item.URL = entryURL
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}
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if item.Author == "" {
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item.Author = a.Author.String()
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}
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if item.Title == "" {
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item.Title = item.URL
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}
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feed.Entries = append(feed.Entries, item)
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}
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return feed
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}
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type atom03Entry struct {
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ID string `xml:"id"`
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Title atom03Text `xml:"title"`
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Modified string `xml:"modified"`
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Issued string `xml:"issued"`
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Created string `xml:"created"`
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Links atomLinks `xml:"link"`
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Summary atom03Text `xml:"summary"`
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Content atom03Text `xml:"content"`
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Author atomPerson `xml:"author"`
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}
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func (a *atom03Entry) Transform() *model.Entry {
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entry := new(model.Entry)
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entry.URL = a.Links.originalLink()
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entry.Date = a.entryDate()
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entry.Author = a.Author.String()
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entry.Hash = a.entryHash()
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entry.Content = a.entryContent()
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entry.Title = a.entryTitle()
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return entry
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}
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func (a *atom03Entry) entryTitle() string {
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return sanitizer.StripTags(a.Title.String())
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}
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func (a *atom03Entry) entryContent() string {
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content := a.Content.String()
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if content != "" {
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return content
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}
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summary := a.Summary.String()
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if summary != "" {
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return summary
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}
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return ""
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}
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func (a *atom03Entry) entryDate() time.Time {
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dateText := ""
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for _, value := range []string{a.Issued, a.Modified, a.Created} {
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if value != "" {
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dateText = value
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break
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}
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}
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if dateText != "" {
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result, err := date.Parse(dateText)
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if err != nil {
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logger.Error("atom: %v", err)
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return time.Now()
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}
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return result
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}
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return time.Now()
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}
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func (a *atom03Entry) entryHash() string {
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for _, value := range []string{a.ID, a.Links.originalLink()} {
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if value != "" {
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return crypto.Hash(value)
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}
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}
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return ""
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}
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type atom03Text struct {
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Type string `xml:"type,attr"`
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Mode string `xml:"mode,attr"`
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Data string `xml:",chardata"`
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XML string `xml:",innerxml"`
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}
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func (a *atom03Text) String() string {
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content := ""
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switch {
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case a.Mode == "xml":
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content = a.XML
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case a.Mode == "escaped":
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content = a.Data
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case a.Mode == "base64":
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b, err := base64.StdEncoding.DecodeString(a.Data)
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if err == nil {
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content = string(b)
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}
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default:
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content = a.Data
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}
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if a.Type != "text/html" {
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content = html.EscapeString(content)
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}
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return strings.TrimSpace(content)
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}
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