public static string SaveFileToDiskIfGdb(HttpPostedFileBase httpPostedFileBase,
GisUploadAttempt gisUploadAttempt)
{
GisUploadAttemptStaging.SetupDirectory(gisUploadAttempt);
var fileEnding = Path.GetFileName(httpPostedFileBase.FileName);
var fullFilePath = Path.Combine(GisUploadAttemptStaging.GisUploadAttemptDirectory(gisUploadAttempt),
fileEnding);
httpPostedFileBase.SaveAs(fullFilePath);
return(fullFilePath);
}
public static string UnzipAndSaveFileToDiskIfShapefile(HttpPostedFileBase httpPostedFileBase,
GisUploadAttempt gisUploadAttempt, ref bool shapeFileSuccessfullyExtractedToDisk)
{
ZipFile zipFile = null;
var shapeFilePath = string.Empty;
var zipFailure = false;
try
{
zipFile = new ZipFile(httpPostedFileBase.InputStream);
}
catch (Exception)
{
zipFailure = true;
}
if (!zipFailure && zipFile != null)
{
GisUploadAttemptStaging.SetupDirectory(gisUploadAttempt);
var extensionsFound = new List <string>();
var shapeFilePathCreated = false;
foreach (ZipEntry zipEntry in zipFile)
{
if (!zipEntry.IsFile)
{
continue;
}
var extension = Path.GetExtension(zipEntry.Name);
if (ValidExtensions.Any(e => e == extension))
{
if (extensionsFound.All(e => e != extension))
{
extensionsFound.Add(extension);
}
var shapefileNameWithExtension = Path.GetFileName(zipEntry.Name);
if (shapefileNameWithExtension == null)
{
continue;
}
// this file is a "keeper", extract it and write it to disk
var fullFilePath = Path.Combine(GisUploadAttemptStaging.GisUploadAttemptDirectory(gisUploadAttempt),
shapefileNameWithExtension);
if (extension.Equals(".shp"))
{
shapeFilePath = fullFilePath;
shapeFilePathCreated = true;
}
var buffer = new byte[4096]; // 4K is optimum
var zipStream = zipFile.GetInputStream(zipEntry);
// unzip file in buffered chunks. This is just as fast as unpacking to a buffer the full size of the file, but does not waste memory
using (var streamWriter = System.IO.File.Create(fullFilePath))
{
StreamUtils.Copy(zipStream, streamWriter, buffer);
}
}
}
shapeFileSuccessfullyExtractedToDisk = extensionsFound.Count == ValidExtensions.Count && shapeFilePathCreated;
}
return(shapeFilePath);
}
