66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
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package threadspost
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import (
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"fmt"
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"strings"
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)
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// LineCount returns non-empty lines after normalizing newlines.
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func LineCount(text string) int {
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text = strings.ReplaceAll(text, "\r\n", "\n")
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text = strings.ReplaceAll(text, "\r", "\n")
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n := 0
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for _, line := range strings.Split(text, "\n") {
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if strings.TrimSpace(line) != "" {
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n++
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}
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}
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return n
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}
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// MimicLengthRange returns a suggested min/max rune count when imitating referenceText.
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func MimicLengthRange(referenceText string) (min, max int) {
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ref := RuneLen(referenceText)
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if ref <= 0 {
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return ViralSweetMin, ViralSweetMax
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}
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min = int(float64(ref) * 0.75)
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max = int(float64(ref) * 1.25)
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if min < 20 {
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min = 20
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}
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if max < min+10 {
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max = min + 10
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}
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if max > MaxPublishRunes {
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max = MaxPublishRunes
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}
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if min > max {
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min = max
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}
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return min, max
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}
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// MimicLengthGuidance builds prompt text for rewrite/mimic flows.
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func MimicLengthGuidance(referenceText string) string {
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referenceText = strings.TrimSpace(referenceText)
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if referenceText == "" {
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return ""
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}
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refRunes := RuneLen(referenceText)
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refLines := LineCount(referenceText)
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min, max := MimicLengthRange(referenceText)
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lineMin, lineMax := refLines, refLines
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if refLines > 1 {
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lineMin = refLines - 1
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if lineMin < 1 {
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lineMin = 1
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}
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lineMax = refLines + 1
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}
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return fmt.Sprintf(
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"【篇幅（仿寫）】參考原文約 %d 字、%d 行。產出正文請控制在 %d～%d 字、約 %d～%d 行，不要明顯比參考長很多或短很多。精簡優先：刪掉重複鋪陳、無關細節、雞湯總結與多餘轉折；每一句都要推進故事或情緒，不然就砍掉。",
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refRunes, refLines, min, max, lineMin, lineMax,
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)
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}
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