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stream.js
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Fri, Mar 7, 09:26

stream.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const stream_1 = require("stream");
const fsStat = require("@nodelib/fs.stat");
const fsWalk = require("@nodelib/fs.walk");
const reader_1 = require("./reader");
class ReaderStream extends reader_1.default {
constructor() {
super(...arguments);
this._walkStream = fsWalk.walkStream;
this._stat = fsStat.stat;
}
dynamic(root, options) {
return this._walkStream(root, options);
}
static(patterns, options) {
const filepaths = patterns.map(this._getFullEntryPath, this);
const stream = new stream_1.PassThrough({ objectMode: true });
stream._write = (index, _enc, done) => {
return this._getEntry(filepaths[index], patterns[index], options)
.then((entry) => {
if (entry !== null && options.entryFilter(entry)) {
stream.push(entry);
}
if (index === filepaths.length - 1) {
stream.end();
}
done();
})
.catch(done);
};
for (let i = 0; i < filepaths.length; i++) {
stream.write(i);
}
return stream;
}
_getEntry(filepath, pattern, options) {
return this._getStat(filepath)
.then((stats) => this._makeEntry(stats, pattern))
.catch((error) => {
if (options.errorFilter(error)) {
return null;
}
throw error;
});
}
_getStat(filepath) {
return new Promise((resolve, reject) => {
this._stat(filepath, this._fsStatSettings, (error, stats) => {
return error === null ? resolve(stats) : reject(error);
});
});
}
}
exports.default = ReaderStream;

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