hackpro-sdk
Version:
103 lines • 4.26 kB
JavaScript
;
/*
* Copyright 2018 balena.io
*
* Licensed 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.
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const path_1 = require("path");
const errors_1 = require("../errors");
const stream_limiter_1 = require("../stream-limiter");
const source_source_1 = require("./source-source");
function isSourceTransform(stream) {
return stream.sourceStream !== undefined;
}
exports.isSourceTransform = isSourceTransform;
function getRootStream(stream) {
while (isSourceTransform(stream)) {
stream = stream.sourceStream;
}
return stream;
}
exports.getRootStream = getRootStream;
class CompressedSource extends source_source_1.SourceSource {
constructor() {
super(...arguments);
this.isSizeEstimated = false;
}
getSize() {
return __awaiter(this, void 0, void 0, function* () {
return;
});
}
canCreateReadStream() {
return __awaiter(this, void 0, void 0, function* () {
return true;
});
}
createReadStream(emitProgress = false, start = 0, end) {
return __awaiter(this, void 0, void 0, function* () {
if (start !== 0) {
throw new errors_1.NotCapable();
}
const stream = yield this.source.createReadStream(emitProgress);
// as any because we need to add the sourceStream property
const transform = this.createTransform();
stream.pipe(transform);
transform.sourceStream = stream;
if (end !== undefined) {
const limiter = new stream_limiter_1.StreamLimiter(transform, end + 1);
limiter.sourceStream = transform;
limiter.on('finish', () => {
// Ignore EBADF errors after this:
// We might be still reading the source stream from a closed fd
stream.on('error', (err) => {
if (err.code !== 'EBADF') {
throw err;
}
});
});
return limiter;
}
return transform;
});
}
_getMetadata() {
return __awaiter(this, void 0, void 0, function* () {
const sourceMetadata = yield this.source.getMetadata();
const compressedSize = sourceMetadata.compressedSize || sourceMetadata.size;
const size = yield this.getSize();
let name;
if (sourceMetadata.name !== undefined) {
name = path_1.basename(sourceMetadata.name, path_1.extname(sourceMetadata.name));
}
return {
name,
size,
compressedSize,
isSizeEstimated: this.isSizeEstimated,
};
});
}
}
exports.CompressedSource = CompressedSource;
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