(arr, val, byteOffset, encoding, dir)
| 10405 | } |
| 10406 | |
| 10407 | function arrayIndexOf (arr, val, byteOffset, encoding, dir) { |
| 10408 | var indexSize = 1 |
| 10409 | var arrLength = arr.length |
| 10410 | var valLength = val.length |
| 10411 | |
| 10412 | if (encoding !== undefined) { |
| 10413 | encoding = String(encoding).toLowerCase() |
| 10414 | if (encoding === 'ucs2' || encoding === 'ucs-2' || |
| 10415 | encoding === 'utf16le' || encoding === 'utf-16le') { |
| 10416 | if (arr.length < 2 || val.length < 2) { |
| 10417 | return -1 |
| 10418 | } |
| 10419 | indexSize = 2 |
| 10420 | arrLength /= 2 |
| 10421 | valLength /= 2 |
| 10422 | byteOffset /= 2 |
| 10423 | } |
| 10424 | } |
| 10425 | |
| 10426 | function read (buf, i) { |
| 10427 | if (indexSize === 1) { |
| 10428 | return buf[i] |
| 10429 | } else { |
| 10430 | return buf.readUInt16BE(i * indexSize) |
| 10431 | } |
| 10432 | } |
| 10433 | |
| 10434 | var i |
| 10435 | if (dir) { |
| 10436 | var foundIndex = -1 |
| 10437 | for (i = byteOffset; i < arrLength; i++) { |
| 10438 | if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { |
| 10439 | if (foundIndex === -1) foundIndex = i |
| 10440 | if (i - foundIndex + 1 === valLength) return foundIndex * indexSize |
| 10441 | } else { |
| 10442 | if (foundIndex !== -1) i -= i - foundIndex |
| 10443 | foundIndex = -1 |
| 10444 | } |
| 10445 | } |
| 10446 | } else { |
| 10447 | if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength |
| 10448 | for (i = byteOffset; i >= 0; i--) { |
| 10449 | var found = true |
| 10450 | for (var j = 0; j < valLength; j++) { |
| 10451 | if (read(arr, i + j) !== read(val, j)) { |
| 10452 | found = false |
| 10453 | break |
| 10454 | } |
| 10455 | } |
| 10456 | if (found) return i |
| 10457 | } |
| 10458 | } |
| 10459 | |
| 10460 | return -1 |
| 10461 | } |
| 10462 | |
| 10463 | Buffer.prototype.includes = function includes (val, byteOffset, encoding) { |
| 10464 | return this.indexOf(val, byteOffset, encoding) !== -1 |
no test coverage detected