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fix(baoyu-post-to-wechat): decode HTML entities and strip tags from article summary

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Add cleanSummaryText() to baoyu-md package: decodes HTML entities (&, <, &#x..., etc.)
and strips HTML tags before using frontmatter description/summary as WeChat article digest
This commit is contained in:
Jim Liu 宝玉
2026-04-12 20:16:53 -05:00
parent 517ff566a1
commit 990fea4f7b
7 changed files with 138 additions and 13 deletions
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packages/baoyu-md/src/content.ts
+43 -3
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@@ -46,6 +46,45 @@ export function stripWrappingQuotes(value: string): string {
return value.trim();
}
const HTML_ENTITIES: Record<string, string> = {
amp: "&",
apos: "'",
gt: ">",
lt: "<",
nbsp: " ",
quot: '"',
};
function decodeHtmlCodePoint(codePoint: number, fallback: string): string {
if (!Number.isFinite(codePoint) || codePoint < 0 || codePoint > 0x10ffff) {
return fallback;
}
return String.fromCodePoint(codePoint);
}
function decodeHtmlEntities(value: string): string {
return value.replace(/&(#x?[0-9a-f]+|[a-z]+);/gi, (entity, body: string) => {
const normalized = body.toLowerCase();
if (normalized.startsWith("#x")) {
return decodeHtmlCodePoint(Number.parseInt(normalized.slice(2), 16), entity);
}
if (normalized.startsWith("#")) {
return decodeHtmlCodePoint(Number.parseInt(normalized.slice(1), 10), entity);
}
return HTML_ENTITIES[normalized] ?? entity;
});
}
export function cleanSummaryText(value: string): string {
return decodeHtmlEntities(stripWrappingQuotes(value))
.replace(/<script\b[\s\S]*?<\/script>/gi, " ")
.replace(/<style\b[\s\S]*?<\/style>/gi, " ")
.replace(/<br\s*\/?>/gi, " ")
.replace(/<\/?[a-z][a-z0-9:-]*(?:\s+[^>]*)?>/gi, " ")
.replace(/\s+/g, " ")
.trim();
}
export function toFrontmatterString(value: unknown): string | undefined {
if (typeof value === "string") {
return stripWrappingQuotes(value);
@@ -94,10 +133,11 @@ export function extractSummaryFromBody(body: string, maxLen: number): string {
.replace(/\*(.+?)\*/g, "$1")
.replace(/\[([^\]]+)\]\([^)]+\)/g, "$1")
.replace(/`([^`]+)`/g, "$1");
const summaryText = cleanSummaryText(cleanText);
if (cleanText.length > 20) {
if (cleanText.length <= maxLen) return cleanText;
return `${cleanText.slice(0, maxLen - 3)}...`;
if (summaryText.length > 20) {
if (summaryText.length <= maxLen) return summaryText;
return `${summaryText.slice(0, maxLen - 3)}...`;
}
}