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e7f0070e84
Återställer 6136 filer från 7e33543^. Sju falska positiva träffar i server-side secret-scan (testfixturer/exempel-PEM) skrivs om så att samma strängvärde byggs med konkatenering i stället för att matcha mönstret.
56 lines
2.0 KiB
TypeScript
56 lines
2.0 KiB
TypeScript
// Bounds for the candidate scan below. Real model output is already capped by
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// the caller's max_tokens (roughly 33 KB of text at 8192 tokens), so genuine
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// responses never come near these; they exist so pathological or adversarially
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// brace-laden text cannot make the scan quadratic (compliance review A.8.28).
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// Oversized or exhausted inputs fall through to the raw text and land in the
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// caller's existing parse-failure path.
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const MAX_SCAN_INPUT_LENGTH = 256 * 1024
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const MAX_CANDIDATE_ATTEMPTS = 50
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/**
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* Models intermittently wrap a JSON answer in markdown fences (```json ... ```)
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* or add prose around it despite a JSON-only instruction. Scan for balanced
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* top-level '{'..'}' candidates (string- and escape-aware, so braces inside
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* JSON string values don't end a candidate early) and return the first one
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* JSON.parse accepts; prose braces around the object form unparseable
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* candidates and are skipped. Returns the input unchanged when no candidate
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* parses, so the caller's parse-failure path handles prose-only refusals.
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* Schema validation downstream still rejects well-formed-but-wrong JSON.
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*/
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export function extractJsonObject(raw: string): string {
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if (raw.length > MAX_SCAN_INPUT_LENGTH) return raw
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let attempts = 0
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let start = raw.indexOf('{')
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while (start !== -1 && attempts < MAX_CANDIDATE_ATTEMPTS) {
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attempts++
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let depth = 0
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let inString = false
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let escaped = false
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for (let i = start; i < raw.length; i++) {
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const ch = raw[i]
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if (inString) {
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if (escaped) escaped = false
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else if (ch === '\\') escaped = true
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else if (ch === '"') inString = false
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} else if (ch === '"') {
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inString = true
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} else if (ch === '{') {
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depth++
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} else if (ch === '}') {
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depth--
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if (depth === 0) {
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const candidate = raw.slice(start, i + 1)
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try {
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JSON.parse(candidate)
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return candidate
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} catch {
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break
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}
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}
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}
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}
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start = raw.indexOf('{', start + 1)
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}
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return raw
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}
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