56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
var fs = require('fs')
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const readline = require('readline')
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const { once } = require('events')
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var exec = require('child_process').exec
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function bufferFile(path) {
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try {
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return fs.readFileSync(path, { encoding: 'utf8' })
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} catch (e) {
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return ''
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}
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}
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async function head (path, lines) {
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let x = 0
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let acc = []
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const readInterface = readline.createInterface({
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input: fs.createReadStream(path),
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terminal: false,
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crlfDelay: Infinity
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})
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readInterface.on('line', function(line) {
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acc.push(line)
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x++
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if (lines && x >= lines) {
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readInterface.close()
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readInterface.removeAllListeners()
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}
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})
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await once(readInterface, 'close')
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return acc
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}
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function wc (path) {
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return new Promise((resolve, reject) => {
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exec("sed -n '$=' " + path, function (error, results) {
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if (error) {
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reject(error)
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} else {
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resolve(results.toString().trim())
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}
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})
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})
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}
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function escape (text) {
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return text.replace('&', '&').replace('<', '<').replace('>', '>').replace('"', '"').replace("'", ''')
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}
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module.exports = {
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bufferFile: bufferFile,
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head: head,
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wc: wc,
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escape: escape
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}
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