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December 1, 2017 17:39
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A powershell script to fetch french cadastral data from https source
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<# | |
.SYNOPSIS | |
Télecharge les fichiers édigéos par commune à partir d'une liste au format csv. | |
Necessite PowerShell 3.0 | |
.DESCRIPTION | |
La liste est séparée par des ; et contient une ligne d'en tête Departement;CodeCommune. | |
Le codecommune est le code insee de la commune. | |
Le second argument de la commande est optionnel et désigne le répertoire de destination. | |
S'il n'est pas fourni, le repertoire courant est utilisé. | |
.EXAMPLE | |
Fetch-Edigeo C:\Path\To\list.csv C:\Path\To\Download\Dir | |
#> | |
$file = $args[0]; | |
$f; | |
try | |
{ | |
$f = Import-CSV $file -Delimiter ";"; | |
} | |
catch | |
{ | |
echo ("Impossible de charger le fichier csv " + $file); | |
exit 1; | |
} | |
$dest = Split-Path $MyInvocation.MyCommand.Path; | |
if ($args.Length -eq 2) | |
{ | |
$dest = $args[1]; | |
if (-not (Test-Path $dest)) | |
{ | |
echo ("Repertoire de destination " + $dest + " introuvable."); | |
exit 1; | |
} | |
} | |
if (-not ($dest.EndsWith("\"))) | |
{ | |
$dest = $dest + "\"; | |
} | |
$base = "https://cadastre.data.gouv.fr/data/dgfip-pci-vecteur/latest/edigeo/feuilles/"; | |
$client = new-object System.Net.WebClient; | |
foreach($v in $f) | |
{ | |
$target = $base + $v.Departement + "/" + $v.Departement + $v.CodeCommune + "/"; | |
foreach ($x in (Invoke-WebRequest $target).Links ) | |
{ | |
if ($x.href -ne "../") | |
{ | |
$url = $target + $x.href; | |
$file = $dest + $x.href; | |
try | |
{ | |
$client.DownloadFile($url, $file); | |
echo ($x.href + ": succès"); | |
} | |
catch | |
{ | |
echo ($x.href + ": echoué"); | |
} | |
} | |
} | |
} |
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