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author | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
commit | abd94a7f5a50f43c797a11b53549ae48fff667c3 (patch) | |
tree | ab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/osenv/osenv.js | |
parent | a0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff) | |
download | wallet-core-abd94a7f5a50f43c797a11b53549ae48fff667c3.tar.xz |
add node_modules to address #4364
Diffstat (limited to 'node_modules/osenv/osenv.js')
-rw-r--r-- | node_modules/osenv/osenv.js | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/node_modules/osenv/osenv.js b/node_modules/osenv/osenv.js new file mode 100644 index 000000000..702a95b98 --- /dev/null +++ b/node_modules/osenv/osenv.js @@ -0,0 +1,72 @@ +var isWindows = process.platform === 'win32' +var path = require('path') +var exec = require('child_process').exec +var osTmpdir = require('os-tmpdir') +var osHomedir = require('os-homedir') + +// looking up envs is a bit costly. +// Also, sometimes we want to have a fallback +// Pass in a callback to wait for the fallback on failures +// After the first lookup, always returns the same thing. +function memo (key, lookup, fallback) { + var fell = false + var falling = false + exports[key] = function (cb) { + var val = lookup() + if (!val && !fell && !falling && fallback) { + fell = true + falling = true + exec(fallback, function (er, output, stderr) { + falling = false + if (er) return // oh well, we tried + val = output.trim() + }) + } + exports[key] = function (cb) { + if (cb) process.nextTick(cb.bind(null, null, val)) + return val + } + if (cb && !falling) process.nextTick(cb.bind(null, null, val)) + return val + } +} + +memo('user', function () { + return ( isWindows + ? process.env.USERDOMAIN + '\\' + process.env.USERNAME + : process.env.USER + ) +}, 'whoami') + +memo('prompt', function () { + return isWindows ? process.env.PROMPT : process.env.PS1 +}) + +memo('hostname', function () { + return isWindows ? process.env.COMPUTERNAME : process.env.HOSTNAME +}, 'hostname') + +memo('tmpdir', function () { + return osTmpdir() +}) + +memo('home', function () { + return osHomedir() +}) + +memo('path', function () { + return (process.env.PATH || + process.env.Path || + process.env.path).split(isWindows ? ';' : ':') +}) + +memo('editor', function () { + return process.env.EDITOR || + process.env.VISUAL || + (isWindows ? 'notepad.exe' : 'vi') +}) + +memo('shell', function () { + return isWindows ? process.env.ComSpec || 'cmd' + : process.env.SHELL || 'bash' +}) |