bc518174
 王天杨
提交两个项目文件
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// Copyright 2017 Lovell Fuller and others.
// SPDX-License-Identifier: Apache-2.0
'use strict';
const fs = require('fs');
const LDD_PATH = '/usr/bin/ldd';
const SELF_PATH = '/proc/self/exe';
const MAX_LENGTH = 2048;
/**
* Read the content of a file synchronous
*
* @param {string} path
* @returns {Buffer}
*/
const readFileSync = (path) => {
const fd = fs.openSync(path, 'r');
const buffer = Buffer.alloc(MAX_LENGTH);
const bytesRead = fs.readSync(fd, buffer, 0, MAX_LENGTH, 0);
fs.close(fd, () => {});
return buffer.subarray(0, bytesRead);
};
/**
* Read the content of a file
*
* @param {string} path
* @returns {Promise<Buffer>}
*/
const readFile = (path) => new Promise((resolve, reject) => {
fs.open(path, 'r', (err, fd) => {
if (err) {
reject(err);
} else {
const buffer = Buffer.alloc(MAX_LENGTH);
fs.read(fd, buffer, 0, MAX_LENGTH, 0, (_, bytesRead) => {
resolve(buffer.subarray(0, bytesRead));
fs.close(fd, () => {});
});
}
});
});
module.exports = {
LDD_PATH,
SELF_PATH,
readFileSync,
readFile
};
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