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c4a2afb7b7
Detecting the format of a feed accounts for up to 30% of the time spent in `parser.ParseFeed`. Cache the value once detected, as it'll never change.
44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package parser // import "miniflux.app/v2/internal/reader/parser"
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import (
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"errors"
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"io"
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"miniflux.app/v2/internal/model"
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"miniflux.app/v2/internal/reader/atom"
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"miniflux.app/v2/internal/reader/json"
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"miniflux.app/v2/internal/reader/rdf"
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"miniflux.app/v2/internal/reader/rss"
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)
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var ErrFeedFormatNotDetected = errors.New("parser: unable to detect feed format")
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// ParseFeedWithFormat returns a normalized feed object.
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func ParseFeedWithFormat(baseURL string, r io.ReadSeeker, format, version string) (*model.Feed, error) {
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switch format {
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case FormatAtom:
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r.Seek(0, io.SeekStart)
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return atom.Parse(baseURL, r, version)
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case FormatRSS:
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r.Seek(0, io.SeekStart)
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return rss.Parse(baseURL, r)
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case FormatJSON:
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r.Seek(0, io.SeekStart)
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return json.Parse(baseURL, r)
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case FormatRDF:
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r.Seek(0, io.SeekStart)
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return rdf.Parse(baseURL, r)
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default:
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return nil, ErrFeedFormatNotDetected
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}
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}
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// ParseFeed analyzes the input data and returns a normalized feed object.
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func ParseFeed(baseURL string, r io.ReadSeeker) (*model.Feed, error) {
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r.Seek(0, io.SeekStart)
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format, version := DetectFeedFormat(r)
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return ParseFeedWithFormat(baseURL, r, format, version)
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}
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