CSharp-Watch.psm1
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<#
.SYNOPSIS Watches the current path for changes to CSharp files and initiates a build of the project. .DESCRIPTION Watches the current directory and sub-directories for changes to C-Sharp files; initiating a build of the project to which the changed file belongs. .PARAMETER copytarget (Optional) defines an additional target directory where the updated dll gets copied .EXAMPLE # Standard call, builds project > cd "D:\path\to\my\project" > D:\path\to\my\project> Start-CSharp-Watch > ------------------------- # Overload, builds project and copies dll to the supplied directory > cd "D:\path\to\my\project" > D:\path\to\my\project> Start-CSharp-Watch "d:\path\to\my\website\bin" #> function Start-CSharp-Watch([Parameter(Mandatory=$false)][string]$copytarget) { write-host "CSharp-Watch is watching for file changes..." Import-Module -Name Invoke-MsBuild if ($copytarget) { # check the parameter is valid directory if ($copytarget -match "^[a-zA-Z]\:\\.+") { $global:robocopytarget = $copytarget Write-Host "CSharp-Watch will copy updated dlls to: '$global:robocopytarget'" } else { Write-Host "CSharp-Watch says, 'copytarget is an invalid path'" } } $existingEvents = get-eventsubscriber foreach ($item in $existingEvents) { if ($item.SourceObject.Path -eq $global:EventSourcePath) { Unregister-event -SubscriptionId $item.SubscriptionId write-host "Unsubscribed from: "$item.SourceObject.Path } } $global:FileChanged = $false # dirty... any better suggestions? $folder = get-location $global:EventSourcePath = $folder $filter = "*.*" $watcher = New-Object IO.FileSystemWatcher $folder, $filter -Property @{ IncludeSubdirectories = $true EnableRaisingEvents = $true } Register-ObjectEvent $watcher "Changed" -Action { $global:FileChanged = $true $global:ChangedPath = $Event.SourceEventArgs.FullPath } > $null While ($true){ While ($global:FileChanged -eq $false){ # We need this to block the IO thread until there is something to run # so the script doesn't finish. If we call the action directly from # the event it won't be able to write to the console Start-Sleep -Milliseconds 100 } # a file has changed, run our stuff on the I/O thread so we can see the output if ($global:ChangedPath -match "(\.cs~|.cs$)") { # this is the bit we want to happen when the file changes write-host "Locating csproj file..." if ($global:ChangedPath) { write-host "File was changed: '$global:ChangedPath'" $pathParts = "$global:ChangedPath".Split("\\") $end = $pathParts.Count - 1 $testPath = $pathParts[0..$end] -join "\" write-host "Testing path $testPath" $csproj = Get-ChildItem -path $testPath *.csproj For ($i = 0; $i -le 20; $i++) { $newEnd = $end - $i $newPath = $pathParts[0..$newEnd] -join "\" $csproj = Get-ChildItem -path $newPath *.csproj write-host "$i. trying: $newPath, csproj: $csproj" if ($csproj) { write-host "Found on $i, at $newPath, $csproj" break } } if ("$csproj".EndsWith(".csproj")) { write-host "Ready: $newPath\$csproj" # should test the result and only if succeeded do the copy action $buildresult = Invoke-MsBuild -Path "$newPath\$csproj" -Params "/target:Build /p:configuration=debug /p:PostBuildEvent= /verbosity:m" if ($buildresult.BuildSucceeded) { write-host "Build was successful" if ($global:robocopytarget) { # there's a copy target set, so copy the dll to there write-host "Copying the binaries to '$global:robocopytarget'" write-host "CSPROJ File directory at '$newPath'" write-host "CSPROJ File is '$csproj'" $dllName = $csproj -replace ".csproj" write-host "CURRENT Dll is called '$dllName'" # it's possible that the project config doesn't put this direct in the \bin ... but, e.g. bin\debug # this is a bit hokey, it would be nice to be able to recursively find the item... # but, there are so many possible configurations, so maybe just check bin or bin\debug for now $target = @(Get-ChildItem -Path "$newPath\bin\*$dllName*.dll")[0] if ($target){ robocopy "$newPath\bin" "$global:robocopytarget" "*$dllName*.dll" /NFL /NDL /NJH /nc /ns /np } else { robocopy "$newPath\bin\Debug" "$global:robocopytarget" "*$dllName*.dll" /NFL /NDL /NJH /nc /ns /np } } } } } } # reset and go again $global:FileChanged = $false } } <# .SYNOPSIS Unsubscribes current path from the watch event. .DESCRIPTION Unsubscribes current path from the watch event. .EXAMPLE > cd "D:\path\to\my\project" > D:\path\to\my\project> Stop-CSharp-Watch #> function Stop-CSharp-Watch() { $existingEvents = get-eventsubscriber ForEach ($item in $existingEvents) { if ($item.SourceObject.Path -eq $global:EventSourcePath) { Unregister-event -SubscriptionId $item.SubscriptionId write-host "Unsubscribed from: "$item.SourceObject.Path } } break } |