1 files changed, 70 insertions, 0 deletions
diff --git a/src/vm/h2inc.ps1 b/src/vm/h2inc.ps1
new file mode 100644
index 0000000000..1e93c0b258
--- /dev/null
+++ b/src/vm/h2inc.ps1
@@ -0,0 +1,70 @@
+# Licensed to the .NET Foundation under one or more agreements.
+# The .NET Foundation licenses this file to you under the MIT license.
+# See the LICENSE file in the project root for more information.
+
+# C to MASM include file translator
+# This is replacement for the deprecated h2inc tool that used to be part of VS.
+
+#
+# The use of [console]::WriteLine (instead of Write-Output) is intentional.
+# PowerShell 2.0 (installed by default on Windows 7) wraps lines written with
+# Write-Output at whatever column width is being used by the current terminal,
+# even when output is being redirected to a file. We can't have this behavior
+# because it will cause the generated file to be malformed.
+#
+
+Function ProcessFile($filePath) {
+
+    [console]::WriteLine("// File start: $filePath")
+
+    Get-Content $filePath | ForEach-Object {
+        
+        if ($_ -match "^\s*#\spragma") {
+            # Ignore pragmas
+            return
+        }
+        
+        if ($_ -match "^\s*#\s*include\s*`"(.*)`"")
+        {
+            # Expand includes.
+            ProcessFile(Join-Path (Split-Path -Parent $filePath) $Matches[1])
+            return
+        }
+        
+        if ($_ -match "^\s*#define\s+(\S+)\s*(.*)")
+        {
+            # Augment #defines with their MASM equivalent
+            $name = $Matches[1]
+            $value = $Matches[2]
+
+            # Note that we do not handle multiline constants
+            
+            # Strip comments from value
+            $value = $value -replace "//.*", ""
+            $value = $value -replace "/\*.*\*/", ""
+
+            # Strip whitespaces from value
+            $value = $value -replace "\s+$", ""
+
+            # ignore #defines with arguments
+            if ($name -notmatch "\(") {
+                $HEX_NUMBER_PATTERN = "\b0x(\w+)\b"
+                $DECIMAL_NUMBER_PATTERN = "(-?\b\d+\b)"
+                       
+                if ($value -match $HEX_NUMBER_PATTERN -or $value -match $DECIMAL_NUMBER_PATTERN) {
+                    $value = $value -replace $HEX_NUMBER_PATTERN, "0`$1h"    # Convert hex constants
+                    $value = $value -replace $DECIMAL_NUMBER_PATTERN, "`$1t" # Convert dec constants
+                    [console]::WriteLine("$name EQU $value")
+                } else {
+                    [console]::WriteLine("$name TEXTEQU <$value>")
+                }
+            }            
+        }
+        
+        [console]::WriteLine("$_")
+    }
+
+    [console]::WriteLine("// File end: $filePath")
+}
+
+ProcessFile $args[0]