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fix: patch tidyMarkdown

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Yanlong Wang 2024-05-09 11:06:20 +08:00
parent de22127d2f
commit 4bee36ed4a
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1 changed files with 28 additions and 30 deletions
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58
backend/functions/src/utils/markdown.ts
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@ -1,39 +1,37 @@
export function tidyMarkdown(markdown: string): string {
const lines = markdown.split('\n');
const processedLines = lines.map((line) => {
// Remove leading spaces from each line
line = line.trimStart();
// Step 1: Handle complex broken links with text and optional images spread across multiple lines
let normalizedMarkdown = markdown.replace(/\[\s*([^\]\n]+?)\s*\]\s*\(\s*([^)]+)\s*\)/g, (match, text, url) => {
// Remove internal new lines and excessive spaces within the text
text = text.replace(/\s+/g, ' ').trim();
url = url.replace(/\s+/g, '').trim();
return `[${text}](${url})`;
// Handle complex broken links with text and optional images
line = line.replace(/\[\s*([^\]\n!]*?)\s*(?:!\[([^\]]*)\]\((.*?)\))?\s*\]\s*\(\s*([^)\n]+)\s*\)/g, (match, text, alt, imgUrl, linkUrl) => {
text = text.replace(/\s+/g, ' ').trim();
alt = alt ? alt.replace(/\s+/g, ' ').trim() : '';
imgUrl = imgUrl ? imgUrl.replace(/\s+/g, '').trim() : '';
linkUrl = linkUrl.replace(/\s+/g, '').trim();
if (imgUrl) {
return `[${text} ![${alt}](${imgUrl})](${linkUrl})`;
} else {
return `[${text}](${linkUrl})`;
}
});
// Normalize regular links that may be broken across lines
line = line.replace(/\[\s*([^\]\n]+)\]\s*\(\s*([^)\n]+)\s*\)/g, (match, text, url) => {
text = text.replace(/\s+/g, ' ').trim();
url = url.replace(/\s+/g, '').trim();
return `[${text}](${url})`;
});
return line;
});
normalizedMarkdown = normalizedMarkdown.replace(/\[\s*([^\]\n!]*?)\s*\n*(?:!\[([^\]]*)\]\((.*?)\))?\s*\n*\]\s*\(\s*([^)]+)\s*\)/g, (match, text, alt, imgUrl, linkUrl) => {
// Normalize by removing excessive spaces and new lines
text = text.replace(/\s+/g, ' ').trim();
alt = alt ? alt.replace(/\s+/g, ' ').trim() : '';
imgUrl = imgUrl ? imgUrl.replace(/\s+/g, '').trim() : '';
linkUrl = linkUrl.replace(/\s+/g, '').trim();
if (imgUrl) {
return `[${text} ![${alt}](${imgUrl})](${linkUrl})`;
} else {
return `[${text}](${linkUrl})`;
}
});
// Join the processed lines back together
let normalizedMarkdown = processedLines.join('\n');
// Step 2: Normalize regular links that may be broken across lines
normalizedMarkdown = normalizedMarkdown.replace(/\[\s*([^\]]+)\]\s*\(\s*([^)]+)\)/g, (match, text, url) => {
text = text.replace(/\s+/g, ' ').trim();
url = url.replace(/\s+/g, '').trim();
return `[${text}](${url})`;
});
// Step 3: Replace more than two consecutive empty lines with exactly two empty lines
// Replace more than two consecutive empty lines with exactly two empty lines
normalizedMarkdown = normalizedMarkdown.replace(/\n{3,}/g, '\n\n');
// Step 4: Remove leading spaces from each line
normalizedMarkdown = normalizedMarkdown.replace(/^[ \t]+/gm, '');
return normalizedMarkdown.trim();
}