Private/deploy/Update-ConfigFile/Get-UpdateXmlUsingXPathParams.ps1
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<#
The MIT License (MIT) Copyright (c) 2015 Objectivity Bespoke Software Specialists Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #> function Get-UpdateXmlUsingXPathParams { <# .SYNOPSIS A helper for Update-ConfigFile function that returns scriptblock for ConfigType = XPath. .PARAMETER ConfigFiles List of configuration file names to update. .PARAMETER XPath XPath expression to find part of xml to replace with $ReplaceString .PARAMETER ReplaceString String which will be setin correct palace .PARAMETER IgnoreErrors If $true, errors will be ignored. .EXAMPLE Get-UpdateXmlUsingXPathParams -ConfigFiles $foo.xml -XPath 'configuration/appSettings/add/@value' -ReplaceString 'newValue' #> [CmdletBinding()] [OutputType([scriptblock])] param( [Parameter(Mandatory=$true)] [string[]] $ConfigFiles, [Parameter(Mandatory=$true)] [string] $XPath, [Parameter(Mandatory=$true)] [string] $ReplaceString, [Parameter(Mandatory=$false)] [switch] $IgnoreErrors ) $result = @{} $result.ScriptBlock = { param($ConfigFiles, $XPath, $ReplaceString) foreach ($configFileName in $ConfigFiles) { if (!(Test-Path -LiteralPath $configFileName)) { $msg = "File $configFileName does not exist (server $([system.environment]::MachineName))." if ($IgnoreErrors) { Write-Output -InputObject $msg continue } else { throw $msg } } $configFileName = (Resolve-Path -LiteralPath $configFileName).ProviderPath $tempFileName = [System.IO.Path]::GetTempFileName() Write-Output "Transforming file '$configFileName' using xpath '$xpath' - output '$tempFileName'" $xml = [xml][IO.File]::ReadAllText($configFileName) $nodes = $xml.SelectNodes($xpath) if (!$nodes) { $msg = "'$xpath' returned no results in file '$configFileName' - no values replaced." Write-Output -InputObject $mgs continue } foreach ($node in $nodes) { if ($node -ne $null) { if ($node.NodeType -eq "Element") { Write-Output -InputObject "Changing InnerXml of node '$($node.Name)' from '$($node.InnerXml)' to '$ReplaceString'." $node.InnerXml = $ReplaceString } else { Write-Output -InputObject "Changing Value of attribute '$($node.Name)' from '$($node.Value)' to '$ReplaceString'." $node.Value = $ReplaceString } } } $xml.save($tempFileName) if (!(Test-Path -LiteralPath $tempFileName)) { $msg = "Someting went wrong - file '$tempFileName' does not exist." if ($IgnoreErrors) { Write-Output -InputObject $msg continue } else { throw $msg } } Write-Output "Replacing file '$configFileName' with '$tempFileName'" Move-Item -Path $tempFileName -Destination $configFileName -Force if (!(Test-Path -LiteralPath $configFileName)) { $msg = "Someting went wrong - file '$configFileName' does not exist." if ($IgnoreErrors) { Write-Output -InputObject $msg continue } else { throw $msg } } Pop-Location } } $result.ArgumentList = @($ConfigFiles, $XPath, $ReplaceString) return $result } |