a790a97c93
使用基于 UTF-16 编码的加权算法替换 go-runewidth，与小红书实际计算规则一致： 非ASCII字符算2字节，ASCII字符算1字节，向上取整除以2。 Closes #401 Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
18 lines
398 B
Go
18 lines
398 B
Go
package xhsutil
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import "unicode/utf16"
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// CalcTitleLength 计算小红书标题长度
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// 规则：非ASCII字符(中文、全角符号等)算2字节，ASCII字符算1字节，最终结果向上取整除以2
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func CalcTitleLength(s string) int {
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byteLen := 0
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for _, c := range utf16.Encode([]rune(s)) {
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if c > 127 {
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byteLen += 2
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} else {
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byteLen += 1
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}
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}
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return (byteLen + 1) / 2
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}
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