50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
/*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2017, Joyent, Inc.
|
|
*/
|
|
|
|
var assert = require('assert-plus');
|
|
|
|
function throwInvalidSize(size) {
|
|
assert.string(size, 'size');
|
|
|
|
throw new Error('size "' + size + '" is not a valid volume size');
|
|
}
|
|
|
|
/*
|
|
* Returns the number of MiBs (Mebibytes) represented by the string "size". That
|
|
* string has the following format: <integer><unit>. The integer must be > 0.
|
|
* Unit format suffix can only be 'G' for gibibytes.
|
|
*
|
|
* Example: the strings '100G' represents 100 gibibytes
|
|
*
|
|
* If "size" is not a valid size string, an error is thrown.
|
|
*/
|
|
function parseVolumeSize(size) {
|
|
assert.string(size, 'size');
|
|
|
|
var baseValue;
|
|
var MIBS_IN_GB = 1024;
|
|
|
|
var matches = size.match(/^([1-9]\d*)G$/);
|
|
if (!matches) {
|
|
throwInvalidSize(size);
|
|
}
|
|
|
|
baseValue = Number(matches[1]);
|
|
|
|
if (isNaN(baseValue)) {
|
|
throwInvalidSize(size);
|
|
}
|
|
|
|
return baseValue * MIBS_IN_GB;
|
|
}
|
|
|
|
module.exports = {
|
|
parseVolumeSize: parseVolumeSize
|
|
}; |