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lib
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pm2
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node_modules
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systeminformation
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printer.js
'use strict'; // @ts-check // ================================================================================== // printers.js // ---------------------------------------------------------------------------------- // Description: System Information - library // for Node.js // Copyright: (c) 2014 - 2024 // Author: Sebastian Hildebrandt // ---------------------------------------------------------------------------------- // License: MIT // ================================================================================== // 15. printers // ---------------------------------------------------------------------------------- const exec = require('child_process').exec; const util = require('./util'); let _platform = process.platform; const _linux = (_platform === 'linux' || _platform === 'android'); const _darwin = (_platform === 'darwin'); const _windows = (_platform === 'win32'); const _freebsd = (_platform === 'freebsd'); const _openbsd = (_platform === 'openbsd'); const _netbsd = (_platform === 'netbsd'); const _sunos = (_platform === 'sunos'); const winPrinterStatus = { 1: 'Other', 2: 'Unknown', 3: 'Idle', 4: 'Printing', 5: 'Warmup', 6: 'Stopped Printing', 7: 'Offline', }; function parseLinuxCupsHeader(lines) { const result = {}; if (lines && lines.length) { if (lines[0].indexOf(' CUPS v') > 0) { const parts = lines[0].split(' CUPS v'); result.cupsVersion = parts[1]; } } return result; } function parseLinuxCupsPrinter(lines) { const result = {}; const printerId = util.getValue(lines, 'PrinterId', ' '); result.id = printerId ? parseInt(printerId, 10) : null; result.name = util.getValue(lines, 'Info', ' '); result.model = lines.length > 0 && lines[0] ? lines[0].split(' ')[0] : ''; result.uri = util.getValue(lines, 'DeviceURI', ' '); result.uuid = util.getValue(lines, 'UUID', ' '); result.status = util.getValue(lines, 'State', ' '); result.local = util.getValue(lines, 'Location', ' ').toLowerCase().startsWith('local'); result.default = null; result.shared = util.getValue(lines, 'Shared', ' ').toLowerCase().startsWith('yes'); return result; } function parseLinuxLpstatPrinter(lines, id) { const result = {}; result.id = id; result.name = util.getValue(lines, 'Description', ':', true); result.model = lines.length > 0 && lines[0] ? lines[0].split(' ')[0] : ''; result.uri = null; result.uuid = null; result.status = lines.length > 0 && lines[0] ? (lines[0].indexOf(' idle') > 0 ? 'idle' : (lines[0].indexOf(' printing') > 0 ? 'printing' : 'unknown')) : null; result.local = util.getValue(lines, 'Location', ':', true).toLowerCase().startsWith('local'); result.default = null; result.shared = util.getValue(lines, 'Shared', ' ').toLowerCase().startsWith('yes'); return result; } function parseDarwinPrinters(printerObject, id) { const result = {}; const uriParts = printerObject.uri.split('/'); result.id = id; result.name = printerObject._name; result.model = uriParts.length ? uriParts[uriParts.length - 1] : ''; result.uri = printerObject.uri; result.uuid = null; result.status = printerObject.status; result.local = printerObject.printserver === 'local'; result.default = printerObject.default === 'yes'; result.shared = printerObject.shared === 'yes'; return result; } function parseWindowsPrinters(lines, id) { const result = {}; const status = parseInt(util.getValue(lines, 'PrinterStatus', ':'), 10); result.id = id; result.name = util.getValue(lines, 'name', ':'); result.model = util.getValue(lines, 'DriverName', ':'); result.uri = null; result.uuid = null; result.status = winPrinterStatus[status] ? winPrinterStatus[status] : null; result.local = util.getValue(lines, 'Local', ':').toUpperCase() === 'TRUE'; result.default = util.getValue(lines, 'Default', ':').toUpperCase() === 'TRUE'; result.shared = util.getValue(lines, 'Shared', ':').toUpperCase() === 'TRUE'; return result; } function printer(callback) { return new Promise((resolve) => { process.nextTick(() => { let result = []; if (_linux || _freebsd || _openbsd || _netbsd) { let cmd = 'cat /etc/cups/printers.conf 2>/dev/null'; exec(cmd, function (error, stdout) { // printers.conf if (!error) { const parts = stdout.toString().split('<Printer '); const printerHeader = parseLinuxCupsHeader(parts[0]); for (let i = 1; i < parts.length; i++) { const printers = parseLinuxCupsPrinter(parts[i].split('\n')); if (printers.name) { printers.engine = 'CUPS'; printers.engineVersion = printerHeader.cupsVersion; result.push(printers); } } } if (result.length === 0) { if (_linux) { cmd = 'export LC_ALL=C; lpstat -lp 2>/dev/null; unset LC_ALL'; // lpstat exec(cmd, function (error, stdout) { const parts = ('\n' + stdout.toString()).split('\nprinter '); for (let i = 1; i < parts.length; i++) { const printers = parseLinuxLpstatPrinter(parts[i].split('\n'), i); result.push(printers); } }); if (callback) { callback(result); } resolve(result); } else { if (callback) { callback(result); } resolve(result); } } else { if (callback) { callback(result); } resolve(result); } }); } if (_darwin) { let cmd = 'system_profiler SPPrintersDataType -json'; exec(cmd, function (error, stdout) { if (!error) { try { const outObj = JSON.parse(stdout.toString()); if (outObj.SPPrintersDataType && outObj.SPPrintersDataType.length) { for (let i = 0; i < outObj.SPPrintersDataType.length; i++) { const printer = parseDarwinPrinters(outObj.SPPrintersDataType[i], i); result.push(printer); } } } catch (e) { util.noop(); } } if (callback) { callback(result); } resolve(result); }); } if (_windows) { util.powerShell('Get-CimInstance Win32_Printer | select PrinterStatus,Name,DriverName,Local,Default,Shared | fl').then((stdout, error) => { if (!error) { const parts = stdout.toString().split(/\n\s*\n/); for (let i = 0; i < parts.length; i++) { const printer = parseWindowsPrinters(parts[i].split('\n'), i); if (printer.name || printer.model) { result.push(printer); } } } if (callback) { callback(result); } resolve(result); }); } if (_sunos) { resolve(null); } }); }); } exports.printer = printer;
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