Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 | 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 113262x 113262x 113262x 113262x 20x 20x 408776x 408776x 408776x 29608x 29608x 408776x 408776x 408776x 20x 20x 258x 258x 258x 258x 258x 258x 20x 20x 71458x 71458x 71457x 71457x 71457x 70165x 70165x 71457x 71457x 71458x 20x 20x 30216x 30216x 30216x 20x 20x 403x 403x 402x 402x 402x 403x 402x 403x 20x 20x 442x 442x 441x 441x 441x 441x 264163x 264163x 264163x 264163x 441x 442x 20x 20x 20x 66813x 66813x 125x 125x 125x 125x 125x 66697x 66613x 66613x 66613x 75x 66813x 66813x 20x 20x 179153x 179153x 20x 20x 2456x 35x 35x 2456x 20x 20x 20x 4x 4x 4x 4x 8x 8x 4x 4x 4x 4x 2x 2x 2x 2x 1x 1x 2x 2x 2x 2x 2x 4x 4x 4x 4x 4x 4x 4x 20x 20x 20x 71x 71x 71x 71x 71x 234x 234x 163x 163x 222x 71x 23x 23x 23x 23x 1x 1x 71x 48x 48x 48x 48x 48x 48x 71x 71x 163x 71x 71x 71x 71x 20x 20x 20x 773x 773x 773x 773x 773x 773x 773x 773x 20x | 'use strict';
const {
StringPrototypeSlice,
SymbolIterator,
TypedArrayPrototypeSet,
Uint8Array,
} = primordials;
const { Buffer } = require('buffer');
const { inspect } = require('internal/util/inspect');
module.exports = class BufferList {
constructor() {
this.head = null;
this.tail = null;
this.length = 0;
}
push(v) {
const entry = { data: v, next: null };
if (this.length > 0)
this.tail.next = entry;
else
this.head = entry;
this.tail = entry;
++this.length;
}
unshift(v) {
const entry = { data: v, next: this.head };
if (this.length === 0)
this.tail = entry;
this.head = entry;
++this.length;
}
shift() {
if (this.length === 0)
return;
const ret = this.head.data;
if (this.length === 1)
this.head = this.tail = null;
else
this.head = this.head.next;
--this.length;
return ret;
}
clear() {
this.head = this.tail = null;
this.length = 0;
}
join(s) {
if (this.length === 0)
return '';
let p = this.head;
let ret = '' + p.data;
while ((p = p.next) !== null)
ret += s + p.data;
return ret;
}
concat(n) {
if (this.length === 0)
return Buffer.alloc(0);
const ret = Buffer.allocUnsafe(n >>> 0);
let p = this.head;
let i = 0;
while (p) {
TypedArrayPrototypeSet(ret, p.data, i);
i += p.data.length;
p = p.next;
}
return ret;
}
// Consumes a specified amount of bytes or characters from the buffered data.
consume(n, hasStrings) {
const data = this.head.data;
if (n < data.length) {
// `slice` is the same for buffers and strings.
const slice = data.slice(0, n);
this.head.data = data.slice(n);
return slice;
}
if (n === data.length) {
// First chunk is a perfect match.
return this.shift();
}
// Result spans more than one buffer.
return hasStrings ? this._getString(n) : this._getBuffer(n);
}
first() {
return this.head.data;
}
*[SymbolIterator]() {
for (let p = this.head; p; p = p.next) {
yield p.data;
}
}
// Consumes a specified amount of characters from the buffered data.
_getString(n) {
let ret = '';
let p = this.head;
let c = 0;
do {
const str = p.data;
if (n > str.length) {
ret += str;
n -= str.length;
} else {
if (n === str.length) {
ret += str;
++c;
if (p.next)
this.head = p.next;
else
this.head = this.tail = null;
} else {
ret += StringPrototypeSlice(str, 0, n);
this.head = p;
p.data = StringPrototypeSlice(str, n);
}
break;
}
++c;
} while ((p = p.next) !== null);
this.length -= c;
return ret;
}
// Consumes a specified amount of bytes from the buffered data.
_getBuffer(n) {
const ret = Buffer.allocUnsafe(n);
const retLen = n;
let p = this.head;
let c = 0;
do {
const buf = p.data;
if (n > buf.length) {
TypedArrayPrototypeSet(ret, buf, retLen - n);
n -= buf.length;
} else {
if (n === buf.length) {
TypedArrayPrototypeSet(ret, buf, retLen - n);
++c;
if (p.next)
this.head = p.next;
else
this.head = this.tail = null;
} else {
TypedArrayPrototypeSet(ret,
new Uint8Array(buf.buffer, buf.byteOffset, n),
retLen - n);
this.head = p;
p.data = buf.slice(n);
}
break;
}
++c;
} while ((p = p.next) !== null);
this.length -= c;
return ret;
}
// Make sure the linked list only shows the minimal necessary information.
[inspect.custom](_, options) {
return inspect(this, {
...options,
// Only inspect one level.
depth: 0,
// It should not recurse.
customInspect: false
});
}
};
|