Mercurial > hgrepos > Python2 > PyMuPDF

comparison mupdf-source/docs/examples/pdf-portfolio.js @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 // List and extract embedded files in a PDF document.
2
3 if (scriptArgs.length != 1 && scriptArgs.length != 3) {
4 print("usage: mutool run pdf-portfolio.js input.pdf [index filename]");
5 print(" List embedded files, or extract an embedded file from a PDF document.")
6 quit();
7 }
8
9 var doc = Document.openDocument(scriptArgs[0]);
10 var Root = doc.getTrailer().Root;
11 if (Root.Names == undefined || !("EmbeddedFiles" in Root.Names)) {
12 print("Document has no embedded files!");
13 quit();
14 }
15
16 function mapNameTree(N, fn) {
17 function mapNameTreeNames(NN) {
18 var i, n = NN.length;
19 for (i = 0; i < n; i += 2)
20 fn(NN[i], NN[i+1]);
21 }
22 function mapNameTreeKids(NK) {
23 var i, n = NK.length;
24 for (i = 0; i < n; ++i)
25 mapNameTree(NK[i], fn)
26 }
27 if ("Names" in N)
28 mapNameTreeNames(N.Names);
29 if ("Kids" in N)
30 mapNameTreeKids(N.Kids);
31 }
32
33 function fileNameFromFS(fs) {
34 if ("UF" in fs) return fs.UF.asString();
35 if ("F" in fs) return fs.F.asString();
36 if ("Unix" in fs) return fs.Unix.asString();
37 if ("DOS" in fs) return fs.DOS.asString();
38 if ("Mac" in fs) return fs.Mac.asString();
39 return "Untitled";
40 }
41
42 if (scriptArgs.length == 1) {
43 var idx = 1;
44 mapNameTree(Root.Names.EmbeddedFiles, function (name,fs) {
45 print(idx, name.asString());
46 print("\tFilename:", fileNameFromFS(fs));
47 if ("Desc" in fs)
48 print("\tDescription:", fs.Desc.asString());
49 ++idx;
50 });
51 }
52
53 if (scriptArgs.length == 3) {
54 var idx = 1;
55 mapNameTree(Root.Names.EmbeddedFiles, function (name,fs) {
56 if (idx == scriptArgs[1]) {
57 print("Saving embedded file", idx, "as:", scriptArgs[2]);
58 fs.EF.F.readStream().save(scriptArgs[2]);
59 }
60 ++idx;
61 });
62 }