src/assemblyhelper.ps1
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# Copyright 2019, Adam Edwards # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. function FindAssembly($assemblyRoot, $assemblyName, $platformSpec) { write-verbose "Looking for matching assembly for '$assemblyName' under path '$assemblyRoot' with platform '$platformSpec'" $matchingAssemblyPaths = ls -r $assemblyRoot -Filter $assemblyName | sort -descending lastwritetime | where {$components = $_.fullname -split "\\"; $components[$components.length - 2] -eq $platformSpec } if ($matchingAssemblyPaths -eq $null -or $matchingAssemblyPaths.length -lt 1) { throw "Unable to find assembly '$assemblyName' under root directory '$assemblyRoot'. Please re-run the installation command for this application and retry." } $matchingAssemblyPaths | foreach { write-verbose "Found possible assembly match for '$assemblyName' in '$_'" } $matchingAssemblyPaths[0].fullname } function LoadAssemblyFromRoot($assemblyRoot, $assemblyName, $platformSpec) { $assemblyPath = FindAssembly $assemblyRoot $assemblyName $platformSpec write-verbose "Requested assembly '$assemblyName', loading assembly '$assemblyPath'" [System.Reflection.Assembly]::LoadFrom($assemblyPath) | Out-Null } function Import-Assembly($AssemblyName, $AssemblyRoot = $null, $TargetFrameworkMoniker = 'net45') { $searchRoot = if ( $assemblyRoot -ne $null ) { $assemblyRoot } else { split-path -parent (get-pscallstack)[1].scriptname } write-verbose "Using assembly root '$searchRoot'..." $assemblyNameParent = split-path -parent $assemblyName $assemblyFile = split-path -leaf $assemblyName $searchRootDirectory = join-path $searchRoot $assemblyNameParent $searchRootItem = get-item $searchRootDirectory 2>$null if ( $searchRootItem -eq $null ) { throw "Unable to find assembly '$assemblyName' because given search directory '$searchRootDirectory' was not accessible" } $searchRootFullyQualified = $searchRootItem.fullname write-verbose "Using fully qualified assembly root '$searchRootFullyQualified' to find assembly '$assemblyFile'..." LoadAssemblyFromRoot $searchRootFullyQualified $assemblyFile $TargetFrameworkMoniker } |