32 lines
1 KiB
Go
32 lines
1 KiB
Go
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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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// Package readtime provides a function to estimate the reading time of an article.
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package readingtime
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import (
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"math"
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"strings"
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"unicode/utf8"
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"miniflux.app/v2/internal/reader/sanitizer"
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"github.com/abadojack/whatlanggo"
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)
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// EstimateReadingTime returns the estimated reading time of an article in minute.
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func EstimateReadingTime(content string, defaultReadingSpeed, cjkReadingSpeed int) int {
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sanitizedContent := sanitizer.StripTags(content)
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langInfo := whatlanggo.Detect(sanitizedContent)
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var timeToReadInt int
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if langInfo.IsReliable() && (langInfo.Lang == whatlanggo.Jpn || langInfo.Lang == whatlanggo.Cmn || langInfo.Lang == whatlanggo.Kor) {
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timeToReadInt = int(math.Ceil(float64(utf8.RuneCountInString(sanitizedContent)) / float64(cjkReadingSpeed)))
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} else {
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nbOfWords := len(strings.Fields(sanitizedContent))
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timeToReadInt = int(math.Ceil(float64(nbOfWords) / float64(defaultReadingSpeed)))
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}
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return timeToReadInt
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}
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