1.17

src/RhinoInside.Revit.External/Extensions/System.cs

@@ -76,6 +76,31 @@ public static string TripleDot(this string sourceString, int maxLength)
         sourceString.Substring(0, maxLength - 1) + '…' :
         sourceString;
     }
+  }
+}
+
+namespace System.IO
+{
+  static class PathExtension
+  {
+    public static bool IsFullyQualifiedPath(this string path)
+    {
+      if (path == null) return false;
+      if (path.Length < 2) return false;
+      if (IsDirectorySeparator(path[0]))
+        return path[1] == '?' || IsDirectorySeparator(path[1]);
+
+      return
+      (
+        (path.Length >= 3) &&
+        (path[1] == Path.VolumeSeparatorChar) &&
+        IsDirectorySeparator(path[2]) &&
+        IsValidDriveChar(path[0])
+      );
+
+      bool IsValidDriveChar(char value) => ('A' <= value && value <= 'Z') || ('a' <= value && value <= 'z');
+      bool IsDirectorySeparator(char c) => c == Path.DirectorySeparatorChar || c == Path.AltDirectorySeparatorChar;
+    }
 
     [DllImport("SHLWAPI", CharSet = CharSet.Unicode)]
     static extern bool PathCompactPathExW([Out] Text.StringBuilder pszOut, string szPath, int cchMax, int dwFlags);
@@ -87,10 +112,7 @@ internal static string TripleDotPath(this string path, int maxLength)
       return builder.ToString();
     }
   }
-}
 
-namespace System.IO
-{
   internal static class FileInfoExtension
   {
     public static void MoveTo(this FileInfo source, string destFileName, bool overwrite)

src/RhinoInside.Revit.External/Settings/AddIns.cs

@@ -39,8 +39,7 @@ public class RevitAddIns : List<AddIn>
 
       public FileInfo ToFileInfo(string path)
       {
-        path = path.Trim(Path.DirectorySeparatorChar);
-        if (!Path.IsPathRooted(path))
+        if (!path.IsFullyQualifiedPath())
           path = Path.GetFullPath(Path.Combine(Path.GetDirectoryName(ManifestPath), path));
 
         return new FileInfo(path);

src/RhinoInside.Revit.GH/Components/Documents/DocumentSave.cs

@@ -104,7 +104,7 @@ protected override void TrySolveInstance(IGH_DataAccess DA)
           if (filePath.Last() == Path.DirectorySeparatorChar)
             filePath = Path.Combine(filePath, doc.Title);
 
-          if (Path.IsPathRooted(filePath) && filePath.Contains(Path.DirectorySeparatorChar))
+          if (filePath.IsFullyQualifiedPath())
           {
             if (!Path.HasExtension(filePath))
             {

src/RhinoInside.Revit.GH/Components/Family/New.cs

@@ -597,7 +597,7 @@ static string GetDefaultTemplatePath(ARDB.Document doc, ARDB.ElementId categoryI
 
     static bool FindTemplatePath(ARDB.Document doc, ref string templatePath, out bool pathWasRelative)
     {
-      pathWasRelative = !Path.IsPathRooted(templatePath);
+      pathWasRelative = !templatePath.IsFullyQualifiedPath();
 
       // Validate input
       foreach (var invalid in Path.GetInvalidPathChars())

src/RhinoInside.Revit.GH/Components/Family/Save.cs

@@ -126,7 +126,7 @@ protected override void TrySolveInstance(IGH_DataAccess DA)
       if (!Path.HasExtension(filePath))
         filePath += ".rfa";
 
-      if (!Path.IsPathRooted(filePath))
+      if (!filePath.IsFullyQualifiedPath())
       {
         filePath = Path.Combine(Types.Document.FromValue(family.Document).SwapFolder.Directory.FullName, "Families", filePath);
         Directory.CreateDirectory(Path.GetDirectoryName(filePath));

src/RhinoInside.Revit.GH/Components/Sheets/SheetRevisions.cs

@@ -49,11 +49,11 @@ protected override void TrySolveInstance(IGH_DataAccess DA)
       if (update)
       {
         StartTransaction(sheet.Document);
-        sheet.Value.SetAdditionalRevisionIds(revisions.Select(x => x.Id).ToArray());
+        sheet.Value.SetAdditionalRevisionIds(revisions.OfType<Types.Revision>().Select(x => x.Id).ToArray());
         sheet.Document.Regenerate();
       }
 
-      Params.TrySetData(DA, "Current Revision", () => Types.Element.FromElementId(sheet.Document, sheet.Value.GetCurrentRevision()));
+      Params.TrySetData(DA, "Current Revision", () => Types.Element.FromElementId(sheet.Document, sheet.Value.GetCurrentRevision()) as Types.Revision);
       Params.TrySetDataList(DA, "Revisions on Sheet", () => sheet.Value.GetAdditionalRevisionIds().Select(x => Types.Element.FromElementId(sheet.Document, x)));
       Params.TrySetDataList(DA, "Scheduled Revisions", () => sheet.Value.GetAllRevisionIds().Select(x => Types.Element.FromElementId(sheet.Document, x)));
     }

src/RhinoInside.Revit.GH/Components/Views/ExportImage.cs

@@ -274,10 +274,10 @@ protected override void TrySolveInstance(IGH_DataAccess DA)
 
       if (!Params.TryGetData(DA, "Folder", out string folder)) return;
       {
-        if (folder is object && folder.Any(x => Path.GetInvalidPathChars().Contains(x)))
+        if (folder?.Any(x => Path.GetInvalidPathChars().Contains(x)) is true)
           throw new Exceptions.RuntimeArgumentException("Folder", $"'{folder}' is not a valid folder name", folder);
 
-        if (folder is object && !Path.IsPathRooted(folder))
+        if (folder?.IsFullyQualifiedPath() is false)
           throw new Exceptions.RuntimeArgumentException("Folder", $"'{folder}' is not a valid absolute path", folder);
       }
 

src/RhinoInside.Revit.GH/Parameters/Document.cs

@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Collections.Generic;
 using System.Linq;
 using System.Windows.Forms;

src/RhinoInside.Revit/Convert/Render/RenderMaterialConverter.cs

@@ -17,10 +17,10 @@
 namespace RhinoInside.Revit.Convert.Render
 {
   using Numerical;
+  using Convert.Geometry;
   using Convert.System.Drawing;
   using Convert.Units;
   using External.DB.Extensions;
-  using RhinoInside.Revit.Convert.Geometry;
   using DBXS = External.DB.Schemas;
 
   /// <summary>
@@ -294,7 +294,7 @@ static SimulatedProceduralTexture GetUnifiedBitmapSchemaTexture(Asset asset)
         {
           try
           {
-            if (Path.IsPathRooted(entry) ?
+            if (entry.IsFullyQualifiedPath() ?
                 File.Exists(entry) :
                 Rhino.ApplicationSettings.FileSettings.FindFile(entry) is string)
             {
@@ -370,7 +370,7 @@ static SimulatedProceduralTexture GetBumpMapSchemaTexture(Asset asset)
               {
                 try
                 {
-                  if (Path.IsPathRooted(entry) ?
+                  if (entry.IsFullyQualifiedPath() ?
                       File.Exists(entry) :
                       Rhino.ApplicationSettings.FileSettings.FindFile(entry) is string)
                   {