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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | 1x 1x 1x 1x 3738x 3738x 3738x 1x 3737x 13x 404x 27x 1x | 'use strict';
const fs = require( 'fs' );
const path = require( 'path' );
const yaml = require( 'yaml' );
// Have a file size read upper limit of 10 MiB for safety.
const upperfileSizeLimit = 10 * 1024 * 1024;
/**
* Internal method to load a given file, but limited for safety to 10 MiB
*
* @param {string} fileName
* @param {number} fileSizeLimit
* @return {string}
*/
function readFileLimited( fileName, fileSizeLimit = upperfileSizeLimit ) {
// Have a file size read upper limit of 10 MiB for safety.
fileSizeLimit = Math.min( fileSizeLimit, upperfileSizeLimit );
// eslint-disable-next-line security/detect-non-literal-fs-filename
const stats = fs.statSync( fileName );
if ( stats.size > fileSizeLimit ) {
throw new Error( 'File ' + fileName + ' is larger than the maximum permitted size, ' + fileSizeLimit + ' bytes' );
}
// eslint-disable-next-line security/detect-non-literal-fs-filename
return fs.readFileSync( fileName, { encoding: 'utf8', start: 0, end: fileSizeLimit } );
}
function dataDir( ...pathComponents ) {
return path.join(
path.dirname( path.dirname( path.dirname( __filename ) ) ),
'data', ...pathComponents );
}
function readYaml( fileName ) {
return yaml.parse( readFileLimited( fileName ) );
}
function readJSON( fileName ) {
return JSON.parse( readFileLimited( fileName ) );
}
module.exports = {
dataDir,
readFileLimited,
readJSON,
readYaml
};
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