858f2bdf5
 Boyan Georgiev
fixes
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"use strict";
const Blob = require("../generated/Blob");
const { isArrayBuffer } = require("../generated/utils");
function convertLineEndingsToNative(s) {
// jsdom always pretends to be *nix, for consistency.
// See also https://github.com/jsdom/jsdom/issues/2396.
return s.replace(/\r
|\r|
/g, "
");
}
exports.implementation = class BlobImpl {
constructor(globalObject, args) {
const parts = args[0];
const properties = args[1];
const buffers = [];
if (parts !== undefined) {
for (const part of parts) {
let buffer;
if (isArrayBuffer(part)) {
buffer = Buffer.from(part);
} else if (ArrayBuffer.isView(part)) {
buffer = Buffer.from(part.buffer, part.byteOffset, part.byteLength);
} else if (Blob.isImpl(part)) {
buffer = part._buffer;
} else {
let s = part;
if (properties.endings === "native") {
s = convertLineEndingsToNative(part);
}
buffer = Buffer.from(s);
}
buffers.push(buffer);
}
}
this._buffer = Buffer.concat(buffers);
this._globalObject = globalObject;
this.type = properties.type;
if (/[^\u0020-\u007E]/.test(this.type)) {
this.type = "";
} else {
this.type = this.type.toLowerCase();
}
}
get size() {
return this._buffer.length;
}
slice(start, end, contentType) {
const { size } = this;
let relativeStart;
let relativeEnd;
let relativeContentType;
if (start === undefined) {
relativeStart = 0;
} else if (start < 0) {
relativeStart = Math.max(size + start, 0);
} else {
relativeStart = Math.min(start, size);
}
if (end === undefined) {
relativeEnd = size;
} else if (end < 0) {
relativeEnd = Math.max(size + end, 0);
} else {
relativeEnd = Math.min(end, size);
}
if (contentType === undefined) {
relativeContentType = "";
} else {
// sanitization (lower case and invalid char check) is done in the
// constructor
relativeContentType = contentType;
}
const span = Math.max(relativeEnd - relativeStart, 0);
const buffer = this._buffer;
const slicedBuffer = buffer.slice(
relativeStart,
relativeStart + span
);
const blob = Blob.createImpl(this._globalObject, [[], { type: relativeContentType }], {});
blob._buffer = slicedBuffer;
return blob;
}
};
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