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60 lines
1.7 KiB
60 lines
1.7 KiB
/*! arch. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */ |
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var cp = require('child_process') |
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var fs = require('fs') |
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var path = require('path') |
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/** |
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* Returns the operating system's CPU architecture. This is different than |
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* `process.arch` or `os.arch()` which returns the architecture the Node.js (or |
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* Electron) binary was compiled for. |
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*/ |
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module.exports = function arch () { |
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/** |
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* The running binary is 64-bit, so the OS is clearly 64-bit. |
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*/ |
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if (process.arch === 'x64') { |
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return 'x64' |
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} |
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/** |
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* All recent versions of Mac OS are 64-bit. |
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*/ |
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if (process.platform === 'darwin') { |
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return 'x64' |
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} |
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/** |
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* On Windows, the most reliable way to detect a 64-bit OS from within a 32-bit |
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* app is based on the presence of a WOW64 file: %SystemRoot%\SysNative. |
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* See: https://twitter.com/feross/status/776949077208510464 |
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*/ |
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if (process.platform === 'win32') { |
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var useEnv = false |
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try { |
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useEnv = !!(process.env.SYSTEMROOT && fs.statSync(process.env.SYSTEMROOT)) |
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} catch (err) {} |
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var sysRoot = useEnv ? process.env.SYSTEMROOT : 'C:\\Windows' |
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// If %SystemRoot%\SysNative exists, we are in a WOW64 FS Redirected application. |
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var isWOW64 = false |
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try { |
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isWOW64 = !!fs.statSync(path.join(sysRoot, 'sysnative')) |
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} catch (err) {} |
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return isWOW64 ? 'x64' : 'x86' |
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} |
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/** |
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* On Linux, use the `getconf` command to get the architecture. |
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*/ |
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if (process.platform === 'linux') { |
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var output = cp.execSync('getconf LONG_BIT', { encoding: 'utf8' }) |
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return output === '64\n' ? 'x64' : 'x86' |
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} |
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/** |
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* If none of the above, assume the architecture is 32-bit. |
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*/ |
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return 'x86' |
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}
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