initial commit

apps/OpenSignServer/cloud/parsefunction/pdf/customSignPdf/findObject.js

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+import getIndexFromRef from './getIndexFromRef.js';
+
+/**
+ * @param {Buffer} pdf
+ * @param {Map} refTable
+ * @returns {object}
+ */
+const findObject = (pdf, refTable, ref) => {
+    const index = getIndexFromRef(refTable, ref);
+
+    const offset = refTable.offsets.get(index);
+    let slice = pdf.slice(offset);
+    slice = slice.slice(0, slice.indexOf('endobj', 'utf8'));
+
+    // FIXME: What if it is a stream?
+    slice = slice.slice(slice.indexOf('<<', 'utf8') + 2);
+    slice = slice.slice(0, slice.lastIndexOf('>>', 'utf8'));
+    return slice;
+};
+
+export default findObject;