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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"
"fmt"
"io"
"miniflux.app/v2/internal/reader/encoding"
)
// parse reads an OPML file and returns a list of subscription.
func parse(data io.Reader) ([]subcription, error) {
opmlDocument := &opmlDocument{}
decoder := xml.NewDecoder(data)
decoder.Entity = xml.HTMLEntity
decoder.Strict = false
decoder.CharsetReader = encoding.CharsetReader
err := decoder.Decode(opmlDocument)
if err != nil {
return nil, fmt.Errorf("opml: unable to parse document: %w", err)
}
return getSubscriptionsFromOutlines(opmlDocument.Outlines, ""), nil
}
func getSubscriptionsFromOutlines(outlines opmlOutlineCollection, category string) []subcription {
subscriptions := make([]subcription, 0, len(outlines))
for _, outline := range outlines {
if outline.IsSubscription() {
subscriptions = append(subscriptions, subcription{
Title: outline.GetTitle(),
FeedURL: outline.FeedURL,
SiteURL: outline.GetSiteURL(),
Description: outline.Description,
CategoryName: category,
})
} else if outline.Outlines.HasChildren() {
subscriptions = append(subscriptions, getSubscriptionsFromOutlines(outline.Outlines, outline.GetTitle())...)
}
}
return subscriptions
}
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