Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/platform/wasm/examples/streams/custom-stream.js @ 41:71bcc18e306f

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MERGE: New upstream PyMuPDF v1.26.5 including MuPDF v1.26.10 BUGS: Needs some additional changes yet. Not yet tested.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 15:24:40 +0200
parents b50eed0cc0ef
children
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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 "use strict"
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3 import * as fs from "fs"
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4 import * as mupdf from "mupdf"
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6 // Use synchronous file descriptor API with Node.
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7 class NodeFileStream {
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8 constructor(path) {
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9 this.fd = fs.openSync(path)
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10 }
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11 fileSize() {
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12 return fs.fstatSync(this.fd).size
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13 }
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14 read(memory, offset, size, position) {
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15 return fs.readSync(this.fd, memory, offset, size, position)
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16 }
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17 close() {
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18 fs.closeSync(this.fd)
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19 }
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20 }
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22 // Use FileReaderSync on Blob/File objects in Web Workers.
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23 class WorkerBlobStream {
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24 constructor(blob) {
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25 this.reader = new FileReaderSync()
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26 this.blob = blob
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27 }
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28 fileSize() {
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29 return this.blob.size
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30 }
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31 read(memory, offset, size, position) {
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32 var data = this.reader.readAsArrayBuffer(this.blob.slice(position, position + size))
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33 memory.set(new Uint8Array(data), offset)
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34 return data.byteLength
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35 }
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36 close() {
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37 this.reader = null
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38 this.blob = null
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39 }
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40 }
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42 /* to test:
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43 var stm = new mupdf.Stream(new NodeFileStream("pdfref17.pdf"))
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44 var doc = mupdf.Document.openDocument(stm, "application/pdf")
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45 */