58 lines
1.8 KiB
JavaScript
58 lines
1.8 KiB
JavaScript
'use strict';
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exports = module.exports = {
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disks,
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file,
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prettyBytes
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};
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const assert = require('assert'),
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BoxError = require('./boxerror.js'),
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safe = require('safetydance');
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// binary units (non SI) 1024 based
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function prettyBytes(bytes) {
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assert.strictEqual(typeof bytes, 'number');
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const i = Math.floor(Math.log(bytes) / Math.log(1024)),
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sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
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return (bytes / Math.pow(1024, i)).toFixed(2) * 1 + '' + sizes[i];
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}
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function parseLine(line) {
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const parts = line.split(/\s+/, 7); // this way the mountpoint can have spaces in it
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return {
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filesystem: parts[0],
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type: parts[1],
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size: Number.parseInt(parts[2], 10),
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used: Number.parseInt(parts[3], 10),
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available: Number.parseInt(parts[4], 10),
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capacity: Number.parseInt(parts[5], 10) / 100, // note: this has a trailing %
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mountpoint: parts[6]
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};
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}
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async function disks() {
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const output = safe.child_process.execSync('df -B1 --output=source,fstype,size,used,avail,pcent,target', { encoding: 'utf8' });
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if (!output) throw new BoxError(BoxError.FS_ERROR, `Error running df: ${safe.error.message}`);
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const lines = output.trim().split('\n').slice(1); // discard header
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const result = [];
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for (const line of lines) {
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result.push(parseLine(line));
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}
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return result;
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}
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async function file(filename) {
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assert.strictEqual(typeof filename, 'string');
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const output = safe.child_process.execSync(`df -B1 --output=source,fstype,size,used,avail,pcent,target ${filename}`, { encoding: 'utf8' });
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if (!output) throw new BoxError(BoxError.FS_ERROR, `Error running df: ${safe.error.message}`);
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const lines = output.trim().split('\n').slice(1); // discard header
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return parseLine(lines[0]);
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}
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