Add Powershell/dns-zone-file-to-csv

Powershell%2Fdns-zone-file-to-csv.-.md

@@ -0,0 +1,54 @@
+```powershell
+# .\ZoneToCsv.ps1 -InputPath .\zones.txt -OutputPath .\zones.csv
+# ZoneToCsv.ps1
+param(
+  [Parameter(Mandatory)] [string] $InputPath,
+  [Parameter(Mandatory)] [string] $OutputPath
+)
+
+$records = New-Object System.Collections.Generic.List[object]
+$currentZone = ''
+
+Get-Content -LiteralPath $InputPath | ForEach-Object {
+  $line = $_.Trim()
+  if ([string]::IsNullOrWhiteSpace($line)) { return }
+  if ($line.StartsWith(';') -or $line.StartsWith('#')) { return }   # comments
+  if ($line.StartsWith('$')) { return }                             # directives ($ORIGIN, $TTL, etc.)
+
+  # zone header like "example.com:"
+  if ($line -match '^\s*([A-Za-z0-9\.\-\*]+):\s*$') {
+    $currentZone = $matches[1].TrimEnd('.')
+    return
+  }
+
+  # normalize whitespace, then parse
+  $parts = -split ($line -replace '\s+', ' ')
+  if ($parts.Length -lt 3) { return }
+
+  $i = 0
+  $name = $parts[$i++].TrimEnd('.')
+
+  $ttl = ''
+  if ($i -lt $parts.Length -and $parts[$i] -match '^\d+$') { $ttl = $parts[$i++]; }
+
+  $class = ''
+  if ($i -lt $parts.Length -and $parts[$i] -match '^(IN|CH|HS)$') { $class = $parts[$i++]; }
+
+  if ($i -ge $parts.Length) { return }
+  $type = $parts[$i++]
+
+  $rdata = ($parts[$i..($parts.Length-1)] -join ' ')
+
+  $records.Add([pscustomobject]@{
+    Zone  = $currentZone
+    Name  = $name
+    TTL   = $ttl
+    Class = $class
+    Type  = $type
+    RData = $rdata
+  })
+}
+
+$records | Export-Csv -NoTypeInformation -Encoding UTF8 -Path $OutputPath
+Write-Host "Wrote $($records.Count) records to $OutputPath"
+```