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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package opml // import "miniflux.app/v2/internal/reader/opml"
import (
"encoding/xml"
"strings"
)
// Specs: http://opml.org/spec2.opml
type opmlDocument struct {
XMLName xml.Name `xml:"opml"`
Version string `xml:"version,attr"`
Header opmlHeader `xml:"head"`
Outlines opmlOutlineCollection `xml:"body>outline"`
}
func NewOPMLDocument() *opmlDocument {
return &opmlDocument{}
}
type opmlHeader struct {
Title string `xml:"title,omitempty"`
DateCreated string `xml:"dateCreated,omitempty"`
OwnerName string `xml:"ownerName,omitempty"`
}
type opmlOutline struct {
Title string `xml:"title,attr,omitempty"`
Text string `xml:"text,attr"`
FeedURL string `xml:"xmlUrl,attr,omitempty"`
SiteURL string `xml:"htmlUrl,attr,omitempty"`
Description string `xml:"description,attr,omitempty"`
Outlines opmlOutlineCollection `xml:"outline,omitempty"`
}
func (outline opmlOutline) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
type opmlOutlineXml opmlOutline
outlineType := ""
if outline.IsSubscription() {
outlineType = "rss"
}
return e.EncodeElement(struct {
opmlOutlineXml
Type string `xml:"type,attr,omitempty"`
}{
opmlOutlineXml: opmlOutlineXml(outline),
Type: outlineType,
}, start)
}
func (o *opmlOutline) IsSubscription() bool {
return strings.TrimSpace(o.FeedURL) != ""
}
func (o *opmlOutline) GetTitle() string {
if o.Title != "" {
return o.Title
}
if o.Text != "" {
return o.Text
}
if o.SiteURL != "" {
return o.SiteURL
}
if o.FeedURL != "" {
return o.FeedURL
}
return ""
}
func (o *opmlOutline) GetSiteURL() string {
if o.SiteURL != "" {
return o.SiteURL
}
return o.FeedURL
}
type opmlOutlineCollection []opmlOutline
func (o opmlOutlineCollection) HasChildren() bool {
return len(o) > 0
}
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