compound-binary-file-js
Version:
This is an implementation of [Compound Binary File v.3](https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-cfb/53989ce4-7b05-4f8d-829b-d08d6148375b) \ Allows reading existing files, creation of the/write operation
72 lines • 2.74 kB
JavaScript
;
var __spreadArrays = (this && this.__spreadArrays) || function () {
for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
for (var r = Array(s), k = 0, i = 0; i < il; i++)
for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
r[k] = a[j];
return r;
};
Object.defineProperty(exports, "__esModule", { value: true });
var ReferencingSubview_1 = require("./ReferencingSubview");
var utils_1 = require("../utils");
/**
* @internal
*/
var SimpleDataview = /** @class */ (function () {
function SimpleDataview(data) {
this.data = data;
}
SimpleDataview.prototype.writeAt = function (position, bytes) {
var _a;
if (position + bytes.length > this.data.length) {
throw new Error(bytes.length + " + " + position + " > " + this.data.length);
}
(_a = this.data).splice.apply(_a, __spreadArrays([position, bytes.length], bytes));
return this;
};
SimpleDataview.prototype.getSize = function () {
return this.data.length;
};
SimpleDataview.prototype.getData = function () {
return this.data;
};
SimpleDataview.prototype.subView = function (start, end) {
if (end == null) {
end = this.data.length;
}
var dataStart = 0;
var dataEnd = this.data.length;
if (end < start) {
throw new Error("end < start (" + end + " < " + start + ")");
}
if (start < dataStart) {
throw new Error("subView start: " + start + ", view start: " + dataStart);
}
if (end > dataEnd) {
throw new Error("subView end: " + end + ", view end: " + dataEnd);
}
if (start >= dataEnd) {
throw new Error("subView start: " + start + ", view end: " + dataEnd);
}
if (end < dataStart) {
throw new Error("subView end: " + end + ", view start: " + dataStart);
}
return new ReferencingSubview_1.ReferencingSubview(this, start, end);
};
SimpleDataview.prototype.allocate = function (length) {
throw new Error("Unsupported operation");
};
SimpleDataview.prototype.fill = function (filler) {
utils_1.fill(this.data, filler);
return this;
};
SimpleDataview.prototype.readAt = function (position, length) {
return this.data.slice(position, position + length);
};
SimpleDataview.prototype.isEmpty = function () {
return this.getSize() === 0;
};
return SimpleDataview;
}());
exports.SimpleDataview = SimpleDataview;
//# sourceMappingURL=SimpleDataview.js.map