1122e17fa6
Instantane de reference de la reprise de migration (2026-09-29). Contient GI.uasset tel que trouve (copie UE4 identique a 4.27, MD5 F4550DA5DC05FC005400CDCA2FC123C9). Ajouts de ce commit : .gitattributes (aucune conversion de fin de ligne), regles .gitignore CHG-001, Tools/ (Snapshot, Restore, AssetHeaders), empreintes L0. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
52 lines
2.2 KiB
PowerShell
52 lines
2.2 KiB
PowerShell
<#
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.SYNOPSIS
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Compte les packages .uasset/.umap par format (UE4 ou UE5) en lisant l'en-tete.
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.DESCRIPTION
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En-tete d'un package : magic 0x9E2A83C1, puis LegacyFileVersion (int32).
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-7 = UE4 (4.27) ; -8 et moins = UE5, avec la version UE5 a l'octet 16.
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Sortie : resume, et la liste des packages UE4 ou illisibles.
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-Csv ecrit le detail complet (chemin, taille, versions, MD5 optionnel).
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.EXAMPLE
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.\Tools\AssetHeaders.ps1
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.\Tools\AssetHeaders.ps1 -Root Content\BPs -Csv Docs\Migration\etat\headers_BPs.csv -Hash
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#>
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param(
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[string]$Root = 'Content',
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[string]$Csv,
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[switch]$Hash,
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[string]$ProjectRoot = (Split-Path $PSScriptRoot -Parent)
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)
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$ErrorActionPreference = 'Stop'
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$base = Join-Path $ProjectRoot $Root
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$buf = New-Object byte[] 24
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$rows = Get-ChildItem $base -Recurse -File -Include *.uasset, *.umap | ForEach-Object {
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$fs = [IO.File]::OpenRead($_.FullName)
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try { $n = $fs.Read($buf, 0, 24) } finally { $fs.Close() }
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$magic = [BitConverter]::ToUInt32($buf, 0)
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$legacy = [BitConverter]::ToInt32($buf, 4)
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# 0x9E2A83C1 ecrit en decimal : le litteral hexadecimal serait un Int32 negatif
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$fmt = if ($n -lt 24 -or $magic -ne [uint32]2653586369) { 'ILLISIBLE' } elseif ($legacy -le -8) { 'UE5' } else { 'UE4' }
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[pscustomobject]@{
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Rel = $_.FullName.Substring($ProjectRoot.TrimEnd('\').Length + 1)
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Format = $fmt
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Legacy = $legacy
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UE4Ver = if ($fmt -ne 'ILLISIBLE') { [BitConverter]::ToInt32($buf, 12) } else { '' }
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UE5Ver = if ($fmt -eq 'UE5') { [BitConverter]::ToInt32($buf, 16) } else { '' }
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Size = $_.Length
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Date = $_.LastWriteTime.ToString('s')
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MD5 = if ($Hash) { (Get-FileHash $_.FullName -Algorithm MD5).Hash } else { '' }
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}
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}
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$rows | Group-Object Format | ForEach-Object { '{0,-10} {1,6}' -f $_.Name, $_.Count }
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$bad = $rows | Where-Object Format -ne 'UE5'
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if ($bad) { "--- packages non UE5 ($(@($bad).Count), 50 premiers) :"; $bad | Select-Object -First 50 | ForEach-Object { '{0} {1} legacy={2} ue4={3}' -f $_.Format, $_.Rel, $_.Legacy, $_.UE4Ver } }
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if ($Csv) {
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$out = Join-Path $ProjectRoot $Csv
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New-Item -ItemType Directory -Force (Split-Path $out -Parent) | Out-Null
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$rows | Export-Csv $out -NoTypeInformation -Encoding UTF8
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"detail : $out"
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}
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