You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.3 KiB
59 lines
1.3 KiB
import {Buffer} from 'buffer';
|
|
|
|
export default BufferList;
|
|
|
|
function BufferList() {
|
|
this.head = null;
|
|
this.tail = null;
|
|
this.length = 0;
|
|
}
|
|
|
|
BufferList.prototype.push = function (v) {
|
|
var entry = { data: v, next: null };
|
|
if (this.length > 0) this.tail.next = entry;else this.head = entry;
|
|
this.tail = entry;
|
|
++this.length;
|
|
};
|
|
|
|
BufferList.prototype.unshift = function (v) {
|
|
var entry = { data: v, next: this.head };
|
|
if (this.length === 0) this.tail = entry;
|
|
this.head = entry;
|
|
++this.length;
|
|
};
|
|
|
|
BufferList.prototype.shift = function () {
|
|
if (this.length === 0) return;
|
|
var ret = this.head.data;
|
|
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
|
|
--this.length;
|
|
return ret;
|
|
};
|
|
|
|
BufferList.prototype.clear = function () {
|
|
this.head = this.tail = null;
|
|
this.length = 0;
|
|
};
|
|
|
|
BufferList.prototype.join = function (s) {
|
|
if (this.length === 0) return '';
|
|
var p = this.head;
|
|
var ret = '' + p.data;
|
|
while (p = p.next) {
|
|
ret += s + p.data;
|
|
}return ret;
|
|
};
|
|
|
|
BufferList.prototype.concat = function (n) {
|
|
if (this.length === 0) return Buffer.alloc(0);
|
|
if (this.length === 1) return this.head.data;
|
|
var ret = Buffer.allocUnsafe(n >>> 0);
|
|
var p = this.head;
|
|
var i = 0;
|
|
while (p) {
|
|
p.data.copy(ret, i);
|
|
i += p.data.length;
|
|
p = p.next;
|
|
}
|
|
return ret;
|
|
};
|
|
|