ZenBrowserMirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/zen-browser/pdf.js.git synced 2025-07-10 02:05:37 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Adds http support to node_stream logic

Browse source
This commit is contained in:
Mukul Mishra 2017-07-30 20:28:32 +05:30
parent ed78b23ff2
commit 18ede8c65d
3 changed files with 309 additions and 115 deletions
Download patch file Download diff file Expand all files Collapse all files

55
src/display/network.js
View file

@ -18,6 +18,7 @@ import {
UnexpectedResponseException
} from '../shared/util';
import globalScope from '../shared/global_scope';
import { validateRangeRequestCapabilities } from './network_utils';
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
throw new Error('Module "./network" shall not ' +
@ -351,51 +352,27 @@ function PDFNetworkStreamFullRequestReader(manager, options) {
}
PDFNetworkStreamFullRequestReader.prototype = {
_validateRangeRequestCapabilities: function
PDFNetworkStreamFullRequestReader_validateRangeRequestCapabilities() {
getResponseHeader(name) {
let fullRequestXhrId = this._fullRequestId;
let fullRequestXhr = this._manager.getRequestXhr(fullRequestXhrId);
if (this._disableRange) {
return false;
}
var networkManager = this._manager;
if (!networkManager.isHttp) {
return false;
}
var fullRequestXhrId = this._fullRequestId;
var fullRequestXhr = networkManager.getRequestXhr(fullRequestXhrId);
if (fullRequestXhr.getResponseHeader('Accept-Ranges') !== 'bytes') {
return false;
}
var contentEncoding =
fullRequestXhr.getResponseHeader('Content-Encoding') || 'identity';
if (contentEncoding !== 'identity') {
return false;
}
var length = fullRequestXhr.getResponseHeader('Content-Length');
length = parseInt(length, 10);
if (!isInt(length)) {
return false;
}
this._contentLength = length; // setting right content length
if (length <= 2 * this._rangeChunkSize) {
// The file size is smaller than the size of two chunks, so it does
// not make any sense to abort the request and retry with a range
// request.
return false;
}
return true;
return fullRequestXhr.getResponseHeader(name);
},
_onHeadersReceived:
function PDFNetworkStreamFullRequestReader_onHeadersReceived() {
let { allowRangeRequests, suggestedLength, } =
validateRangeRequestCapabilities({
getResponseHeader: this.getResponseHeader.bind(this),
isHttp: this._manager.isHttp,
rangeChunkSize: this._rangeChunkSize,
disableRange: this._disableRange,
});
if (this._validateRangeRequestCapabilities()) {
// Setting right content length.
this._contentLength = suggestedLength || this._contentLength;
if (allowRangeRequests) {
this._isRangeSupported = true;
}