PowerShell compiler for Edge.js.
This library is based on https://github.com/dfinke/edge-ps all credit for original work goes to Doug Finke.
Install edge and edge-ps modules:
npm install edge-js
npm install edge-ps
server.js:
var edge = require('edge-js');
var hello = edge.func('ps', function () {/*
"PowerShell welcomes $inputFromJS on $(Get-Date)"
*/});
hello('Node.js', function (error, result) {
if (error) throw error;
console.log(result[0]);
});Run and enjoy:
C:\testEdgeps>node server
PowerShell welcomes Node.js on 05/04/2013 09:38:40
Rather than embedding PowerShell directly, you can use PowerShell files, dot source them and even use Import-Module.
What you can do in native PowerShell works in Node.js.
- .NET 4.5
- .NET Core - dotnet 8 or later.
var edge = require('edge-js');
var excelPS = edge.func('ps', function () {/*
$data = $inputFromJS | Invoke-Expression
$xl = New-Object -ComObject Excel.Application
$wf = $xl.WorksheetFunction
New-Object PSObject -Property @{
Median = $wf.Median($data)
StDev = $wf.StDev($data)
Var = $wf.Var($data)
} | ConvertTo-Json
$xlProcess = Get-Process excel
$xlProcess.kill()
*/});
// Invoke PowerShell, it start Excel, gets a WorksheetFunction and then calls
// Median, StDev and Var on the array of data passed in.
// Here we are passing an array of 1 to 100
excelPS('1..100', function(error, result){
if(error) throw error;
console.log(result[0]);
});{
"Median": 50.5,
"StDev": 29.011491975882016,
"Var": 841.66666666666663
}
Here from a Node.js web server app we can call PowerShell which fires up Excel. From PowerShell we access Excel Worksheet Functions and at the end, return a simple html table with the results.
var ps=edge.func('ps', function(){/*
param($data=1..100)
$xl = New-Object -ComObject Excel.Application
$xlProcess = Get-Process excel
$wf = $xl.WorksheetFunction
#$data = $data | Invoke-Expression
$r = New-Object PSObject -Property @{
Median = $wf.Median($data)
StDev = $wf.StDev($data)
Var = $wf.Var($data)
}
$xlProcess.kill()
@"
<h2>Calling Excel Worksheet Functions in PowerShell in a Node.js web server</h2>
<table border='1'>
<tr><td>Median</td><td>$($r.Median)</td></tr>
<tr><td>StDev</td><td>$($r.StDev)</td></tr>
<tr><td>Var</td><td>$($r.Var)</td></tr>
</table>
"@
*/})
var ps=edge.func('ps', function(){/*
$dataset = Get-Process |
Sort handles -desc |
Select -first 10 name, company, handles |
ConvertTo-Json -Compress
@"
<html lang="en">
<head>
<meta charset="utf-8">
<title>Top 10 Process with most handles</title>
<script type="text/javascript" src="js/d3.v3.js"></script>
<link rel="stylesheet" type="text/css" href="css/chart.css" />
<h2>Top 10 Process with most handles</h2>
<span>Host: </span><span><b>$(hostname)</span>
</head>
<body>
<script type="text/javascript">
var dataset = $dataset;
d3.select("body")
.append("div")
.attr("class","chart")
.selectAll("div.line")
.data(dataset)
.enter()
.append("div")
.attr("class","line")
d3.selectAll("div.line")
.append("div")
.attr("class","label")
.text(function(data) { return data.Name })
d3.selectAll("div.line")
.append("div")
.attr("class","bar")
.style("width", function(d){ return d.Handles/10 + "px" })
.text(function(d){ return d.Handles });
</script>
</body>
</html>
"@
*/})See Edge.js on GitHub for more information.