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type { ParsedSitemap, SitemapResult, ValidationIssue, SitemapUrl, SitemapIndex } from \"./types.ts\";\n\nfunction parseXmlTag(xml: string, tag: string): string[] {\n const regex = new RegExp(`<${tag}[^>]*>([\\\\s\\\\S]*?)`, \"gi\");\n const matches: string[] = [];\n let match;\n while ((match = regex.exec(xml)) !== null) {\n matches.push(match[1].trim());\n }\n return matches;\n}\n\nfunction getTagContent(xml: string, tag: string): string | undefined {\n const match = xml.match(new RegExp(`<${tag}[^>]*>([^<]*)`, \"i\"));\n return match?.[1]?.trim() || undefined;\n}\n\nfunction parseSitemapXml(xml: string): ParsedSitemap {\n const isIndex = /]*xmlns/i.test(xml)) {\n issues.push({ severity: \"warning\", message: \"Missing xmlns namespace declaration\" });\n }\n \n // Validate URLs\n const validChangefreqs = [\"always\", \"hourly\", \"daily\", \"weekly\", \"monthly\", \"yearly\", \"never\"];\n \n for (const url of sitemap.urls) {\n // Check URL format\n try {\n new URL(url.loc);\n } catch {\n issues.push({ severity: \"error\", message: `Invalid URL format`, url: url.loc });\n }\n \n // Check priority range\n if (url.priority) {\n const p = parseFloat(url.priority);\n if (isNaN(p) || p < 0 || p > 1) {\n issues.push({ severity: \"warning\", message: `Invalid priority (should be 0.0-1.0): ${url.priority}`, url: url.loc });\n }\n }\n \n // Check changefreq\n if (url.changefreq && !validChangefreqs.includes(url.changefreq.toLowerCase())) {\n issues.push({ severity: \"warning\", message: `Invalid changefreq: ${url.changefreq}`, url: url.loc });\n }\n \n // Check date format\n if (url.lastmod && !/^\\d{4}(-\\d{2}(-\\d{2}(T\\d{2}:\\d{2}(:\\d{2})?([+-]\\d{2}:?\\d{2}|Z)?)?)?)?$/.test(url.lastmod)) {\n issues.push({ severity: \"warning\", message: `Invalid lastmod date format`, url: url.loc });\n }\n }\n \n // Size checks\n if (sitemap.urls.length > 50000) {\n issues.push({ severity: \"error\", message: `Sitemap exceeds 50,000 URL limit (${sitemap.urls.length} URLs)` });\n }\n \n if (sitemap.urls.length === 0 && sitemap.sitemaps.length === 0) {\n issues.push({ severity: \"error\", message: \"Sitemap contains no URLs or child sitemaps\" });\n }\n \n return issues;\n}\n\nfunction computeStats(sitemap: ParsedSitemap) {\n const dates = sitemap.urls\n .map(u => u.lastmod)\n .filter((d): d is string => !!d)\n .sort();\n \n const invalidPriorities = sitemap.urls.filter(u => {\n if (!u.priority) return false;\n const p = parseFloat(u.priority);\n return isNaN(p) || p < 0 || p > 1;\n }).length;\n \n return {\n urlCount: sitemap.urls.length,\n sitemapCount: sitemap.sitemaps.length,\n oldestDate: dates[0],\n newestDate: dates[dates.length - 1],\n missingLastmod: sitemap.urls.filter(u => !u.lastmod).length,\n invalidPriorities,\n };\n}\n\nexport async function fetchAndParseSitemap(url: string): Promise {\n const start = Date.now();\n \n try {\n const response = await fetch(url, {\n headers: { \"User-Agent\": \"SitemapViewer/1.0\" },\n });\n \n if (!response.ok) {\n return {\n url,\n success: false,\n timing: Date.now() - start,\n error: `HTTP ${response.status}: ${response.statusText}`,\n validation: [],\n stats: { urlCount: 0, sitemapCount: 0, missingLastmod: 0, invalidPriorities: 0 },\n };\n }\n \n const xml = await response.text();\n \n // Check if it's gzipped (we'd need the raw bytes, but fetch auto-decompresses)\n if (!xml.includes(\" {\n if (!indexResult.sitemap || indexResult.sitemap.type !== \"sitemapindex\" || maxDepth <= 0) {\n return [indexResult];\n }\n \n const results: SitemapResult[] = [indexResult];\n const childUrls = indexResult.sitemap.sitemaps.map(s => s.loc);\n \n // Fetch children in parallel (limit concurrency)\n const batchSize = 5;\n for (let i = 0; i < childUrls.length; i += batchSize) {\n const batch = childUrls.slice(i, i + batchSize);\n const batchResults = await Promise.all(batch.map(url => fetchAndParseSitemap(url)));\n results.push(...batchResults);\n }\n \n return results;\n}\n","deleted","label",[100],"permalink","https://www.val.town/x/kamalnrf/sitemap-viewer/code/parser.ts","extension","actionData","errors"]