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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.
48 lines
1.9 KiB
TypeScript
48 lines
1.9 KiB
TypeScript
import { inflateSync } from 'node:zlib'
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/**
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* Text a rendered @react-pdf/renderer document actually carries, as one
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* string per page content stream (test helper).
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*
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* Standard-font text is written as WinAnsi bytes inside `[...] TJ` / `(...) Tj`
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* operators. Inflating the streams and decoding those operands byte-for-byte
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* shows what a viewer will draw, which is the only way to prove a glyph made
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* it into the file: a character with no glyph in the font (U+2212 in
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* Helvetica, issue #1982) survives as an unmapped control byte and is drawn
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* as nothing. Thousands separators come back as U+00A0 and are normalised to
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* a plain space so assertions can use "4 684".
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*/
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export function pdfTextStrings(pdf: Buffer): string[] {
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const raw = pdf.toString('latin1')
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const out: string[] = []
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const streamRe = /stream\r?\n/g
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let match: RegExpExecArray | null
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while ((match = streamRe.exec(raw)) !== null) {
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const start = match.index + match[0].length
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const end = raw.indexOf('endstream', start)
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if (end === -1) continue
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const bytes = Buffer.from(raw.slice(start, end), 'latin1')
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let content: string
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try {
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content = inflateSync(bytes).toString('latin1')
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} catch {
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content = bytes.toString('latin1')
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}
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// Only page content streams carry text objects; embedded font programs
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// and images are binary and would produce false hex/paren matches.
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if (!/\bBT\b[\s\S]*\bET\b/.test(content)) continue
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const parts: string[] = []
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const opRe = /<([0-9a-fA-F]+)>|\(((?:\\.|[^\\)])*)\)/g
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let op: RegExpExecArray | null
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while ((op = opRe.exec(content)) !== null) {
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if (op[1] !== undefined) {
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parts.push(Buffer.from(op[1], 'hex').toString('latin1'))
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} else {
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parts.push(op[2].replace(/\\([()\\])/g, '$1'))
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}
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}
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if (parts.length > 0) out.push(parts.join('').replaceAll(' ', ' '))
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}
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return out
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}
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