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POPowershell functions executed regardless of being called
 

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    <p>I'm having trouble understanding how Powershell treats functions. In the following script all functions are called, even if I never actually call the main function. Does powershell not have a concept of call chain?</p> <pre><code>param([string]$directory) [string]$global:sqlscript; $global:types = @{ "double" = "DOUBLE PRECISION"; "int" = "INTEGER"; "QString" = "INTEGER"; "Ignored" = "1"; "Normal" = "2"; "Critical" = "3" } function resultToSql($element) { $global:sqlscript += ('"') $global:sqlscript += ($element.name + '" ') $global:sqlscript += ($global:types.Get_Item($element.type)) $global:sqlscript += (',' + [Environment]::Newline) $global:sqlscript += ('"' + $element.name + "_metric_group" + " " + $global:types.Get_Item($element.metric_group.type)) $global:sqlscript += (',' + [Environment]::Newline) } function xmlToSql($source) { Write-Host "Parsing..."; $global:sqlscript += "CREATE TABLE IF NOT EXISTS " + '"' + $source.spec.task.ToLower() + '"'+ [Environment]::NewLine $global:sqlscript += '"' + "id" + '"' + " SERIAL NOT NULL" + [Environment]::NewLine foreach ($node in $source.spec.measure) { resultToSql $node } foreach ($m in $source.spec.error) { resultToSql $m } $global:sqlscript += '"' + "weighted_sum" + '" ' + $global:types.Get_Item("double") + [Environment]::Newline; } function main { if ($directory -eq $null) { exit } else { $xmlfiles = Get-ChildItem -Path $directory -include *Spec.xml foreach ($xmlfile in $xmlfiles) { Write-Host "Filename:" $xmlfile; [xml]$spec = Get-Content $file; xmlToSql $spec; Write-Host $script; } } } </code></pre>
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    1. COI'm surprised because main is not called in the script.
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    2. COI've saved your posted script as `a.ps1`, and executed it with `a.ps1 "c:\temp"` (having added extra Write-Hosts for confirmation) and see no output on the console (i.e. no functions were called). Please can you clarify how you are executing this script?
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    3. COI'm calling it from the Powershell ISE commandline ".\script.ps1 C:\path\to\specxmls\" without the quotes. This is a shot in the dark, but does powershell somehow cache scripts? I'm getting weird behaviour that almost seems like it doesn't register changes to the script. And even running it without an argument produces output that seems to be from an earlier execution.
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