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Fix schema not loading when the assembly is in a folder containing accented characters in their name. #190

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Fix schema not loading when the assembly is in a folder containing accented characters in their name. #190

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36 changes: 36 additions & 0 deletions Source/Revit.IFC.Export/Exporter/Exporter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,9 @@
using Autodesk.Revit.DB.ExternalService;
using Revit.IFC.Export.Properties;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;

using Autodesk.Revit.DB.Steel;

namespace Revit.IFC.Export.Exporter
Expand Down Expand Up @@ -96,6 +99,14 @@ private void OnApplicationInitialized(object sender, EventArgs eventArgs)
/// </summary>
public class Exporter : IExporterIFC
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern int GetShortPathName(
[MarshalAs(UnmanagedType.LPTStr)]
string path,
[MarshalAs(UnmanagedType.LPTStr)]
StringBuilder shortPath,
int shortPathLength);

RevitStatusBar statusBar = null;

// Used for debugging tool "WriteIFCExportedElements"
Expand Down Expand Up @@ -983,6 +994,9 @@ private string LocateSchemaFile(string schemaFileName)
#if IFC_OPENSOURCE
// Find the alternate schema file from the open source install folder
filePath = Path.Combine(Path.GetDirectoryName(Assembly.GetCallingAssembly().Location), schemaFileName);
// If the path contains accented characters, the schema loading will fail, so let's
// try to get the short path form of the specified path.
filePath = TryGetShortPathName(filePath);
if (!File.Exists(filePath))
#endif
{
Expand All @@ -991,6 +1005,28 @@ private string LocateSchemaFile(string schemaFileName)
return filePath;
}

private static string TryGetShortPathName(string filePath)
{
try
{
var shortPathBuilder = new StringBuilder(255);
if (GetShortPathName(filePath, shortPathBuilder, shortPathBuilder.Capacity) != 0)
{
var shortPath = shortPathBuilder.ToString();
if (!string.IsNullOrWhiteSpace(shortPath))
{
return shortPath;
}
}

return filePath;
}
catch (Exception)
{
return filePath;
}
}

/// <summary>
/// Sets the lists of property sets to be exported. This can be overriden.
/// </summary>
Expand Down