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- Integrated a new utility function `parseFrontmatterScalarKey` to streamline the extraction of the description from skill files. - Improved the logic for handling frontmatter, ensuring more robust parsing and trimming of description values.
78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
/**
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* 从 frontmatter 文本里读一个顶层标量（整块 metadata 已由调用方从 --- … --- 切好）。
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* 多行块（description: > / |）：从下一行起收到「下一个顶层键」或 metadata 结束为止。
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*/
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function escapeRegExp(s) {
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return s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
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}
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/** 下一行若是顶层键 `foo:`（行首无缩进），则当前块结束。 */
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function isTopLevelKeyLine(line) {
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const t = line.trimStart()
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if (!t || t.startsWith('#')) return false
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return /^[A-Za-z_][\w-]*\s*:\s/.test(t)
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}
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function minIndentOfNonEmpty(lines) {
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let min = Infinity
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for (const l of lines) {
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if (!l.trim()) continue
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const n = l.match(/^(\s*)/)[1].length
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if (n < min) min = n
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}
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return min === Infinity ? 0 : min
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}
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function dedent(lines) {
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const min = minIndentOfNonEmpty(lines)
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return lines.map((l) => (l.length === 0 ? '' : l.slice(min)))
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}
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function parseFrontmatterScalarKey(fmBlock, key) {
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if (!fmBlock || !key) return null
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const lines = fmBlock.split(/\r?\n/)
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const keyRe = new RegExp(`^${escapeRegExp(key)}:\\s*(.*)$`)
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for (let i = 0; i < lines.length; i++) {
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const m = lines[i].match(keyRe)
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if (!m) continue
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let after = m[1].replace(/\s+$/, '')
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const blockHead = after.match(/^([>|])([-+]?)\s*(.*)$/)
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if (blockHead) {
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const mode = blockHead[1]
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const sameLine = (blockHead[3] || '').trimEnd()
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const raw = []
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if (sameLine) raw.push(sameLine)
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for (let j = i + 1; j < lines.length; j++) {
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const line = lines[j]
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if (line.length > 0 && !/^\s/.test(line) && isTopLevelKeyLine(line)) break
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raw.push(line)
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}
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const body = dedent(raw)
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if (mode === '>') {
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return body
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.map((l) => l.trim())
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.filter(Boolean)
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.join(' ')
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.trim()
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}
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return body.join('\n').trim()
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}
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const t = after.trim()
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if ((t.startsWith('"') && t.endsWith('"')) || (t.startsWith("'") && t.endsWith("'"))) {
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return t.slice(1, -1)
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}
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if (t) return t.replace(/^["']|["']$/g, '')
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return ''
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}
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return null
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}
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module.exports = { parseFrontmatterScalarKey }
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