[Build][Windows] Don't extract archives needlessly.

Avoid extracting archives every time you run a build.

Author: al45tair

utils/build.ps1

@@ -631,32 +631,53 @@ function Fetch-Dependencies {
 
     Write-Output "Extracting '$ZipFileName' ..."
     New-Item -ItemType Directory -ErrorAction Ignore -Path $BinaryCache | Out-Null
-    Expand-Archive -Path $source -DestinationPath $BinaryCache -Force
+    Expand-Archive -Path $source -DestinationPath $destination -Force
+  }
+
+  function Extract-Toolchain {
+    param (
+        [string]$InstallerExeName,
+        [string]$BinaryCache,
+        [string]$ToolchainName
+    )
+
+    $source = Join-Path -Path $BinaryCache -ChildPath $InstallerExeName
+    $destination = Join-Path -Path $BinaryCache -ChildPath toolchains\$ToolchainName
+
+    # Check if the extracted directory already exists and is up to date.
+    if (Test-Path $destination) {
+        $installerWriteTime = (Get-Item $source).LastWriteTime
+        $extractedWriteTime = (Get-Item $destination).LastWriteTime
+        if ($installerWriteTime -le $extractedWriteTime) {
+            Write-Output "'$ToolchainName' is already extracted and up to date."
+            return
+        }
+    }
+
+    Write-Output "Extracting '$ToolchainName' ..."
+
+    # The new runtime MSI is built to expand files into the immediate directory. So, setup the installation location.
+    New-Item -ItemType Directory -ErrorAction Ignore $BinaryCache\toolchains\$PinnedToolchain\LocalApp\Programs\Swift\Runtimes\0.0.0\usr\bin | Out-Null
+    Invoke-Program $BinaryCache\WiX-$WiXVersion\tools\net6.0\any\wix.exe -- burn extract $BinaryCache\$ToolchainName.exe -out $BinaryCache\toolchains\ -outba $BinaryCache\toolchains\
+    Get-ChildItem "$BinaryCache\toolchains\WixAttachedContainer" -Filter "*.msi" | % {
+      $LogFile = [System.IO.Path]::ChangeExtension($_.Name, "log")
+      $TARGETDIR = if ($_.Name -eq "rtl.msi") { "$BinaryCache\toolchains\$ToolchainName\LocalApp\Programs\Swift\Runtimes\5.10.1\usr\bin" } else { "$BinaryCache\toolchains\$ToolchainName" }
+    Invoke-Program -OutNull msiexec.exe /lvx! $BinaryCache\toolchains\$LogFile /qn /a $BinaryCache\toolchains\WixAttachedContainer\$_ ALLUSERS=0 TARGETDIR=$TARGETDIR
+    }
   }
 
   $WiXVersion = "4.0.4"
   $WiXURL = "https://www.nuget.org/api/v2/package/wix/$WiXVersion"
   $WiXHash = "A9CA12214E61BB49430A8C6E5E48AC5AE6F27DC82573B5306955C4D35F2D34E2"
   DownloadAndVerify $WixURL "$BinaryCache\WiX-$WiXVersion.zip" $WiXHash
 
-  # TODO(compnerd) stamp/validate that we need to re-extract
-  New-Item -ItemType Directory -ErrorAction Ignore $BinaryCache\WiX-$WiXVersion | Out-Null
-  Write-Output "Extracting WiX ..."
-  Expand-Archive -Path $BinaryCache\WiX-$WiXVersion.zip -Destination $BinaryCache\WiX-$WiXVersion -Force
+  Extract-ZipFile WiX-$WiXVersion.zip $BinaryCache WiX-$WiXVersion
 
   DownloadAndVerify $PinnedBuild "$BinaryCache\$PinnedToolchain.exe" $PinnedSHA256
 
   # TODO(compnerd) stamp/validate that we need to re-extract
-  Write-Output "Extracting $PinnedToolchain ..."
   New-Item -ItemType Directory -ErrorAction Ignore $BinaryCache\toolchains | Out-Null
-  # The new runtime MSI is built to expand files into the immediate directory. So, setup the installation location.
-  New-Item -ItemType Directory -ErrorAction Ignore $BinaryCache\toolchains\$PinnedToolchain\LocalApp\Programs\Swift\Runtimes\0.0.0\usr\bin | Out-Null
-  Invoke-Program $BinaryCache\WiX-$WiXVersion\tools\net6.0\any\wix.exe -- burn extract $BinaryCache\$PinnedToolchain.exe -out $BinaryCache\toolchains\ -outba $BinaryCache\toolchains\
-  Get-ChildItem "$BinaryCache\toolchains\WixAttachedContainer" -Filter "*.msi" | % {
-    $LogFile = [System.IO.Path]::ChangeExtension($_.Name, "log")
-    $TARGETDIR = if ($_.Name -eq "rtl.msi") { "$BinaryCache\toolchains\$PinnedToolchain\LocalApp\Programs\Swift\Runtimes\5.10.1\usr\bin" } else { "$BinaryCache\toolchains\$PinnedToolchain" }
-    Invoke-Program -OutNull msiexec.exe /lvx! $BinaryCache\toolchains\$LogFile /qn /a $BinaryCache\toolchains\WixAttachedContainer\$_ ALLUSERS=0 TARGETDIR=$TARGETDIR
-  }
+  Extract-Toolchain "$PinnedToolchain.exe" $BinaryCache $PinnedToolchain
 
   function Download-Python($ArchName) {
     $PythonAMD64URL = "https://www.nuget.org/api/v2/package/python/$PythonVersion"
@@ -668,10 +689,7 @@ function Fetch-Dependencies {
     DownloadAndVerify (Get-Variable -Name "Python${ArchName}URL").Value $BinaryCache\Python$ArchName-$PythonVersion.zip (Get-Variable -Name "Python${ArchName}Hash").Value
 
     if (-not $ToBatch) {
-      # TODO(compnerd) stamp/validate that we need to re-extract
-      New-Item -ItemType Directory -ErrorAction Ignore $BinaryCache\Python$ArchName-$PythonVersion | Out-Null
-      Write-Output "Extracting Python ($ArchName) ..."
-      Expand-Archive -Path $BinaryCache\Python$ArchName-$PythonVersion.zip -Destination $BinaryCache\Python$ArchName-$PythonVersion -Force
+      Extract-ZipFile Python$ArchName-$PythonVersion.zip $BinaryCache Python$ArchName-$PythonVersion
     }
   }