Correction README.md

Ajout modification du fichier Project.gfx

modules/ZipBuilder.psm1

@@ -52,4 +52,74 @@ function Get-ZipFilename {
     return "fullConfig.$hashString.zip"
 }
 
-Export-ModuleMember -Function New-EnoceanZip, Get-ZipFilename
+function Read-GfxMainXml {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory)]
+        [byte[]]$GfxBytes
+    )
+
+    $memStream = New-Object System.IO.MemoryStream(, $GfxBytes)
+    $archive = New-Object System.IO.Compression.ZipArchive($memStream, [System.IO.Compression.ZipArchiveMode]::Read)
+
+    $entry = $archive.GetEntry("Main.xml")
+    if (-not $entry) {
+        $archive.Dispose()
+        $memStream.Close()
+        throw "Main.xml non trouve dans le fichier GFx"
+    }
+
+    $entryStream = $entry.Open()
+    $reader = New-Object System.IO.StreamReader($entryStream, [System.Text.Encoding]::UTF8)
+    $content = $reader.ReadToEnd()
+    $reader.Close()
+    $entryStream.Close()
+    $archive.Dispose()
+    $memStream.Close()
+
+    return $content
+}
+
+function Update-GfxZip {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory)]
+        [byte[]]$GfxBytes,
+
+        [Parameter(Mandatory)]
+        [string]$ModifiedMainXml
+    )
+
+    # Copier les bytes dans un MemoryStream modifiable
+    $memStream = New-Object System.IO.MemoryStream
+    $memStream.Write($GfxBytes, 0, $GfxBytes.Length)
+    $memStream.Position = 0
+
+    $archive = New-Object System.IO.Compression.ZipArchive($memStream, [System.IO.Compression.ZipArchiveMode]::Update, $true)
+
+    # Supprimer l'ancien Main.xml et recreer avec le contenu modifie
+    $entry = $archive.GetEntry("Main.xml")
+    if ($entry) {
+        $entry.Delete()
+    }
+
+    $newEntry = $archive.CreateEntry("Main.xml", [System.IO.Compression.CompressionLevel]::Optimal)
+    $entryStream = $newEntry.Open()
+    $utf8NoBom = New-Object System.Text.UTF8Encoding($false)
+    $writer = New-Object System.IO.StreamWriter($entryStream, $utf8NoBom)
+    $writer.Write($ModifiedMainXml)
+    $writer.Flush()
+    $writer.Close()
+    $entryStream.Close()
+
+    $archive.Dispose()
+
+    $newBytes = $memStream.ToArray()
+    $memStream.Close()
+
+    Write-Log -Message "GFx mis a jour en memoire : $($newBytes.Length) octets" -Level INFO
+
+    return $newBytes
+}
+
+Export-ModuleMember -Function New-EnoceanZip, Get-ZipFilename, Read-GfxMainXml, Update-GfxZip