88a38b6c5b
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91 lines
2.4 KiB
JavaScript
91 lines
2.4 KiB
JavaScript
import {
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getImageAsBlob,
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getPrim,
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getPrimTree,
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getStreamAsString,
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} from "../../src/core/obj_walker.js";
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import fs from "fs";
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import { PDFDocument } from "../../src/core/document.js";
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import { Stream } from "../../src/core/stream.js";
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const filePath =
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"C:\\Users\\kj131\\pdf-forge\\test_pdfs\\ISO_32000-2_2020(en).pdf";
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fs.readFile(filePath, (err, data) => {
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if (err) {
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console.error("Error reading file:", err);
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return;
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}
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console.log("Reading file");
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const stream = new Stream(data); // No need for Uint8Array, `data` is already a buffer
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const manager = { enableXfa: false };
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const doc = new PDFDocument(manager, stream);
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try {
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doc.parseStartXRef();
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doc.parse(false);
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console.log("Number of pages:", doc.numPages);
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parse(doc);
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} catch (e) {
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console.error("Failed to parse PDF:", e);
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}
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});
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async function parse(doc) {
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// console.time("xref");
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// let table = await retrieveXref(doc);
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// console.timeEnd("xref");
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// console.time("get prim");
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// const prim = await getPrim("/Page2/Resources/XObject/Im0/Length", doc);
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// console.timeEnd("get prim");
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// console.log(prim);
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// const request = {
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// key: "Page2",
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// children: [
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// { key: "CropBox" },
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// { key: "Contents", children: [{ key: "1" , children: [{ key: "Length" }]}] },
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// {
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// key: "Resources",
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// children: [{ key: "ProcSet" }],
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// },
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// ],
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// };
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// console.time("get tree");
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// const tree = await getPrimTree([request], doc);
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// console.timeEnd("get tree");
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// logTree(tree);
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console.time("string");
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const string = await getStreamAsString("/Page2/Contents/0/Data", doc);
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console.timeEnd("string");
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console.log(string);
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// const handler = { send: undefined };
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// console.time("image");
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// // const image = await getStreamAsImage("/Page2/Contents/2/Data", doc);
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// const image = await getImageAsBlob(
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// "/Page2/Resources/XObject/Im0/Data",
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// doc,
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// handler
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// );
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// console.timeEnd("image");
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// console.log(image);
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}
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function logTree(tree) {
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for (const node of tree) {
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let str = " ".repeat(node.depth);
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if (!node.container) {
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str += " ";
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} else {
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str += node.expanded ? "v " : "> ";
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}
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str += node.key + " | " + node.ptype + " | ";
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// if (node.sub_type !== "-") {
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// str += node.sub_type + " | ";
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// }
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// str += node.value;
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str += node.trace.map(t => t.key).join(", ");
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console.log(str);
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}
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}
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