68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package common
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import (
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"encoding/json"
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"sort"
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"strings"
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"unicode"
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"github.com/mozillazg/go-pinyin"
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"36wisdom/biz/consts"
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)
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// AnnotatePinyin 写时一次性标注：词表最长匹配优先（整体转拼音），未命中逐字转
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// （pinyin.Tone 带声调）；返回逐字对齐的 JSON 数组字符串，非汉字对应空串，
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// 下标与原文 rune 一一对应。纯函数，文本未变结果不变（幂等）。
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func AnnotatePinyin(text string) string {
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runes := []rune(text)
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out := make([]string, len(runes))
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if len(runes) == 0 {
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return "[]"
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}
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words := make([]string, 0, len(consts.PinyinOverrides))
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for w := range consts.PinyinOverrides {
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words = append(words, w)
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}
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sort.Slice(words, func(i, j int) bool { return len(words[i]) > len(words[j]) })
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// 词表最长匹配切分：命中片段整体标注（词表拼音音节数须与字数一致）
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for i := 0; i < len(runes); {
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matched := false
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for _, w := range words {
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n := len([]rune(w))
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if i+n > len(runes) || string(runes[i:i+n]) != w {
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continue
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}
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pys := strings.Fields(consts.PinyinOverrides[w])
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if len(pys) != n {
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continue
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}
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copy(out[i:i+n], pys)
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i += n
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matched = true
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break
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}
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if !matched {
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i++
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}
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}
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// 未命中汉字逐字转拼音：词典缺失字（生僻字等）SinglePinyin 返回空串，
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// 该字自然保持 ""，后续字不错位
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args := pinyin.Args{Style: pinyin.Tone}
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i := 0
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for _, r := range text {
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if out[i] == "" && unicode.Is(unicode.Han, r) {
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if pys := pinyin.SinglePinyin(r, args); len(pys) > 0 {
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out[i] = pys[0]
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}
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}
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i++
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}
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b, _ := json.Marshal(out)
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return string(b)
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}
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