Spaces:
Running
Running
File size: 12,264 Bytes
78c921d |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 |
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
import { __asyncDelegator, __asyncGenerator, __asyncValues, __await } from "tslib";
import { encodeUtf8 } from '../util/utf8.mjs';
import { isPromise, isIterable, isAsyncIterable, isIteratorResult, isFlatbuffersByteBuffer, BigInt64Array, BigUint64Array } from './compat.mjs';
/** @ignore */
const SharedArrayBuf = (typeof SharedArrayBuffer !== 'undefined' ? SharedArrayBuffer : ArrayBuffer);
/** @ignore */
function collapseContiguousByteRanges(chunks) {
const result = chunks[0] ? [chunks[0]] : [];
let xOffset, yOffset, xLen, yLen;
for (let x, y, i = 0, j = 0, n = chunks.length; ++i < n;) {
x = result[j];
y = chunks[i];
// continue if x and y don't share the same underlying ArrayBuffer, or if x isn't before y
if (!x || !y || x.buffer !== y.buffer || y.byteOffset < x.byteOffset) {
y && (result[++j] = y);
continue;
}
({ byteOffset: xOffset, byteLength: xLen } = x);
({ byteOffset: yOffset, byteLength: yLen } = y);
// continue if the byte ranges of x and y aren't contiguous
if ((xOffset + xLen) < yOffset || (yOffset + yLen) < xOffset) {
y && (result[++j] = y);
continue;
}
result[j] = new Uint8Array(x.buffer, xOffset, yOffset - xOffset + yLen);
}
return result;
}
/** @ignore */
export function memcpy(target, source, targetByteOffset = 0, sourceByteLength = source.byteLength) {
const targetByteLength = target.byteLength;
const dst = new Uint8Array(target.buffer, target.byteOffset, targetByteLength);
const src = new Uint8Array(source.buffer, source.byteOffset, Math.min(sourceByteLength, targetByteLength));
dst.set(src, targetByteOffset);
return target;
}
/** @ignore */
export function joinUint8Arrays(chunks, size) {
// collapse chunks that share the same underlying ArrayBuffer and whose byte ranges overlap,
// to avoid unnecessarily copying the bytes to do this buffer join. This is a common case during
// streaming, where we may be reading partial byte ranges out of the same underlying ArrayBuffer
const result = collapseContiguousByteRanges(chunks);
const byteLength = result.reduce((x, b) => x + b.byteLength, 0);
let source, sliced, buffer;
let offset = 0, index = -1;
const length = Math.min(size || Number.POSITIVE_INFINITY, byteLength);
for (const n = result.length; ++index < n;) {
source = result[index];
sliced = source.subarray(0, Math.min(source.length, length - offset));
if (length <= (offset + sliced.length)) {
if (sliced.length < source.length) {
result[index] = source.subarray(sliced.length);
}
else if (sliced.length === source.length) {
index++;
}
buffer ? memcpy(buffer, sliced, offset) : (buffer = sliced);
break;
}
memcpy(buffer || (buffer = new Uint8Array(length)), sliced, offset);
offset += sliced.length;
}
return [buffer || new Uint8Array(0), result.slice(index), byteLength - (buffer ? buffer.byteLength : 0)];
}
/** @ignore */
export function toArrayBufferView(ArrayBufferViewCtor, input) {
let value = isIteratorResult(input) ? input.value : input;
if (value instanceof ArrayBufferViewCtor) {
if (ArrayBufferViewCtor === Uint8Array) {
// Node's `Buffer` class passes the `instanceof Uint8Array` check, but we need
// a real Uint8Array, since Buffer#slice isn't the same as Uint8Array#slice :/
return new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength);
}
return value;
}
if (!value) {
return new ArrayBufferViewCtor(0);
}
if (typeof value === 'string') {
value = encodeUtf8(value);
}
if (value instanceof ArrayBuffer) {
return new ArrayBufferViewCtor(value);
}
if (value instanceof SharedArrayBuf) {
return new ArrayBufferViewCtor(value);
}
if (isFlatbuffersByteBuffer(value)) {
return toArrayBufferView(ArrayBufferViewCtor, value.bytes());
}
return !ArrayBuffer.isView(value) ? ArrayBufferViewCtor.from(value) : (value.byteLength <= 0 ? new ArrayBufferViewCtor(0)
: new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength / ArrayBufferViewCtor.BYTES_PER_ELEMENT));
}
/** @ignore */ export const toInt8Array = (input) => toArrayBufferView(Int8Array, input);
/** @ignore */ export const toInt16Array = (input) => toArrayBufferView(Int16Array, input);
/** @ignore */ export const toInt32Array = (input) => toArrayBufferView(Int32Array, input);
/** @ignore */ export const toBigInt64Array = (input) => toArrayBufferView(BigInt64Array, input);
/** @ignore */ export const toUint8Array = (input) => toArrayBufferView(Uint8Array, input);
/** @ignore */ export const toUint16Array = (input) => toArrayBufferView(Uint16Array, input);
/** @ignore */ export const toUint32Array = (input) => toArrayBufferView(Uint32Array, input);
/** @ignore */ export const toBigUint64Array = (input) => toArrayBufferView(BigUint64Array, input);
/** @ignore */ export const toFloat32Array = (input) => toArrayBufferView(Float32Array, input);
/** @ignore */ export const toFloat64Array = (input) => toArrayBufferView(Float64Array, input);
/** @ignore */ export const toUint8ClampedArray = (input) => toArrayBufferView(Uint8ClampedArray, input);
/** @ignore */
const pump = (iterator) => { iterator.next(); return iterator; };
/** @ignore */
export function* toArrayBufferViewIterator(ArrayCtor, source) {
const wrap = function* (x) { yield x; };
const buffers = (typeof source === 'string') ? wrap(source)
: (ArrayBuffer.isView(source)) ? wrap(source)
: (source instanceof ArrayBuffer) ? wrap(source)
: (source instanceof SharedArrayBuf) ? wrap(source)
: !isIterable(source) ? wrap(source) : source;
yield* pump((function* (it) {
let r = null;
do {
r = it.next(yield toArrayBufferView(ArrayCtor, r));
} while (!r.done);
})(buffers[Symbol.iterator]()));
return new ArrayCtor();
}
/** @ignore */ export const toInt8ArrayIterator = (input) => toArrayBufferViewIterator(Int8Array, input);
/** @ignore */ export const toInt16ArrayIterator = (input) => toArrayBufferViewIterator(Int16Array, input);
/** @ignore */ export const toInt32ArrayIterator = (input) => toArrayBufferViewIterator(Int32Array, input);
/** @ignore */ export const toUint8ArrayIterator = (input) => toArrayBufferViewIterator(Uint8Array, input);
/** @ignore */ export const toUint16ArrayIterator = (input) => toArrayBufferViewIterator(Uint16Array, input);
/** @ignore */ export const toUint32ArrayIterator = (input) => toArrayBufferViewIterator(Uint32Array, input);
/** @ignore */ export const toFloat32ArrayIterator = (input) => toArrayBufferViewIterator(Float32Array, input);
/** @ignore */ export const toFloat64ArrayIterator = (input) => toArrayBufferViewIterator(Float64Array, input);
/** @ignore */ export const toUint8ClampedArrayIterator = (input) => toArrayBufferViewIterator(Uint8ClampedArray, input);
/** @ignore */
export function toArrayBufferViewAsyncIterator(ArrayCtor, source) {
return __asyncGenerator(this, arguments, function* toArrayBufferViewAsyncIterator_1() {
// if a Promise, unwrap the Promise and iterate the resolved value
if (isPromise(source)) {
return yield __await(yield __await(yield* __asyncDelegator(__asyncValues(toArrayBufferViewAsyncIterator(ArrayCtor, yield __await(source))))));
}
const wrap = function (x) { return __asyncGenerator(this, arguments, function* () { yield yield __await(yield __await(x)); }); };
const emit = function (source) {
return __asyncGenerator(this, arguments, function* () {
yield __await(yield* __asyncDelegator(__asyncValues(pump((function* (it) {
let r = null;
do {
r = it.next(yield r === null || r === void 0 ? void 0 : r.value);
} while (!r.done);
})(source[Symbol.iterator]())))));
});
};
const buffers = (typeof source === 'string') ? wrap(source) // if string, wrap in an AsyncIterableIterator
: (ArrayBuffer.isView(source)) ? wrap(source) // if TypedArray, wrap in an AsyncIterableIterator
: (source instanceof ArrayBuffer) ? wrap(source) // if ArrayBuffer, wrap in an AsyncIterableIterator
: (source instanceof SharedArrayBuf) ? wrap(source) // if SharedArrayBuffer, wrap in an AsyncIterableIterator
: isIterable(source) ? emit(source) // If Iterable, wrap in an AsyncIterableIterator and compose the `next` values
: !isAsyncIterable(source) ? wrap(source) // If not an AsyncIterable, treat as a sentinel and wrap in an AsyncIterableIterator
: source; // otherwise if AsyncIterable, use it
yield __await(// otherwise if AsyncIterable, use it
yield* __asyncDelegator(__asyncValues(pump((function (it) {
return __asyncGenerator(this, arguments, function* () {
let r = null;
do {
r = yield __await(it.next(yield yield __await(toArrayBufferView(ArrayCtor, r))));
} while (!r.done);
});
})(buffers[Symbol.asyncIterator]())))));
return yield __await(new ArrayCtor());
});
}
/** @ignore */ export const toInt8ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int8Array, input);
/** @ignore */ export const toInt16ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int16Array, input);
/** @ignore */ export const toInt32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int32Array, input);
/** @ignore */ export const toUint8ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint8Array, input);
/** @ignore */ export const toUint16ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint16Array, input);
/** @ignore */ export const toUint32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint32Array, input);
/** @ignore */ export const toFloat32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Float32Array, input);
/** @ignore */ export const toFloat64ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Float64Array, input);
/** @ignore */ export const toUint8ClampedArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint8ClampedArray, input);
/** @ignore */
export function rebaseValueOffsets(offset, length, valueOffsets) {
// If we have a non-zero offset, create a new offsets array with the values
// shifted by the start offset, such that the new start offset is 0
if (offset !== 0) {
valueOffsets = valueOffsets.slice(0, length + 1);
for (let i = -1; ++i <= length;) {
valueOffsets[i] += offset;
}
}
return valueOffsets;
}
/** @ignore */
export function compareArrayLike(a, b) {
let i = 0;
const n = a.length;
if (n !== b.length) {
return false;
}
if (n > 0) {
do {
if (a[i] !== b[i]) {
return false;
}
} while (++i < n);
}
return true;
}
//# sourceMappingURL=buffer.mjs.map
|