/// <summary>
/// Reads BasicFileInfo from a Revit file.
/// </summary>
/// <param name="pathToFile">The path to Revit file.</param>
/// <returns><see cref="RevitFileVersionInfo"/> object</returns>
public static RevitFileVersionInfo ReadFromFile(string pathToFile)
{
var content = OleDataReader.GetRawString(pathToFile, nameof(RevitFileVersionInfo), Encoding.Unicode);
var match = RevitBuildRegex.Match(content);
return(new RevitFileVersionInfo(match.Groups["version"]?.ToString()));
}
/// <summary>
/// Gets a <see cref="RevitFileInfo" /> instance from the given file path.
/// </summary>
/// <param name="filePath">The file path.</param>
/// <param name="readProperties">if set to <c>true</c> [read properties].</param>
/// <param name="readTypes">if set to <c>true</c> [read types].</param>
/// <returns></returns>
/// <exception cref="T:System.ArgumentException">filePath is invalid.</exception>
public static RevitFileInfo GetFromFile(string filePath)
{
if (string.IsNullOrWhiteSpace(filePath) || !File.Exists(filePath))
{
throw new ArgumentException("Please supply a valid path to a Revit document", nameof(filePath));
}
var rfi = new RevitFileInfo
{
FilePath = filePath
};
// Read basic file info from metadata
try
{
var basicInfo = OleDataReader.GetRawBytes(filePath, RevitFileMap.OleStreams.BASIC_FILE_INFO);
var properties = GetProperties(basicInfo);
rfi.ParseDocumentInfo(properties);
rfi.ParseLocale(properties);
rfi.ParseRevit(properties);
rfi.ParseUsername(properties);
}
catch (Exception)
{
// TODO log the error
}
// Read family types from part atom
try
{
rfi.PartAtom = PartAtom.GetFromFile(filePath);
if (rfi.Format <= 0)
{
rfi.Format = rfi.PartAtom?.Link?.Files?.FirstOrDefault()?.ProductVersion ?? -1;
}
}
catch (Exception)
{
// TODO log the error
}
return(rfi);
}
public static int GetFormatFromFile(string filePath)
{
if (string.IsNullOrWhiteSpace(filePath) || !File.Exists(filePath))
{
throw new ArgumentException("Please supply a valid path to a Revit document", nameof(filePath));
}
try
{
var basicInfo = OleDataReader.GetRawBytes(filePath, RevitFileMap.OleStreams.BASIC_FILE_INFO);
var properties = GetProperties(basicInfo);
var formatFromBasicInfo = properties.GetFormat();
if (formatFromBasicInfo > 0)
{
return(formatFromBasicInfo);
}
}
catch
{
// TODO ad logging
// Trying to read
}
try
{
var partAtom = PartAtom.GetFromFile(filePath);
var formatFromPartAtom = partAtom?.Link?.Files?.FirstOrDefault()?.ProductVersion;
if (formatFromPartAtom != null)
{
return(formatFromPartAtom.GetValueOrDefault());
}
}
catch (Exception ex)
{
throw new InvalidDataException($"Couldn't read format information from the followin file: '{filePath}'", ex);
}
return(-1);
}
/// <summary>
/// Gets the properties.
/// </summary>
/// <param name="filePath">The file path.</param>
/// <returns></returns>
internal static Dictionary <string, string> GetProperties(string filePath)
{
var basicInfo = OleDataReader.GetRawBytes(filePath, RevitFileMap.OleStreams.BASIC_FILE_INFO);
var fileProps = new Dictionary <string, string>();
var asd = new Regex(@"\p{IsCJKUnifiedIdeographs}");
foreach (var encoding in RevitFileMap.SupportedEncodings)
{
var basicInfoString = encoding.GetString(basicInfo)?.TrimEnd('\u0a0d');
if (asd.IsMatch(basicInfoString))
{
continue;
}
using var basicInfoReader = new StringReader(basicInfoString?.Replace("\0", string.Empty));
// ReSharper disable once RedundantAssignment
var stringLine = basicInfoReader.ReadLine(); // skip the first line
while (!string.IsNullOrWhiteSpace(stringLine = basicInfoReader.ReadLine()))
{
var parts = stringLine.Split(new[] { ":" }, StringSplitOptions.None);
if (parts.Length != 2 || IsInvalidProperty(parts.FirstOrDefault()))
{
continue;
}
fileProps.Add(parts[0].Trim(), parts[1].Trim());
}
if (fileProps.Any())
{
break;
}
}
return(fileProps);
}
/// <summary>
/// Extracts the stream.
/// </summary>
/// <param name="pathToFile">The path to file.</param>
/// <returns></returns>
/// <exception cref="InvalidDataException"></exception>
public override MemoryStream ExtractStream(string pathToFile)
{
try
{
var thumbnailBytes = OleDataReader.GetRawBytes(pathToFile, RevitFileMap.OleStorage.IMAGE_STREAM);
// Validate preview data or go out
if ((thumbnailBytes == null) || (thumbnailBytes.Length <= 0))
{
return(null);
}
// read past the Revit meta-data to the start of the PNG image
var startingOffset = GetPngOffset(thumbnailBytes);
if (startingOffset == 0)
{
return(null);
}
var previewUpperBound = thumbnailBytes.GetUpperBound(0);
var pngDataBuffer = new byte[previewUpperBound - startingOffset + 1];
using (var ms = new MemoryStream(thumbnailBytes))
{
ms.Position = startingOffset;
ms.Read(pngDataBuffer, 0, pngDataBuffer.Length);
// read the PNG image data into a byte array
var outms = new MemoryStream(pngDataBuffer);
return(outms);
}
}
catch (Exception ex)
{
throw new InvalidDataException($"Failed to extract the thumbnail of the following Revit file \"{pathToFile}\"", ex);
}
}
/// <summary>
/// Gets from file.
/// </summary>
/// <param name="filePath">The file path.</param>
/// <returns></returns>
public static PartAtom GetFromFile(string filePath)
{
var partAtom = OleDataReader.GetData <PartAtom>(filePath, nameof(PartAtom), Encoding.UTF8);
return(partAtom);
}
