1 files changed, 72 insertions, 0 deletions
diff --git a/src/installer/corehost/cli/apphost/bundle/file_entry.h b/src/installer/corehost/cli/apphost/bundle/file_entry.h
new file mode 100644
index 00000000000..efe405cc9a6
--- /dev/null
+++ b/src/installer/corehost/cli/apphost/bundle/file_entry.h
@@ -0,0 +1,72 @@
+// 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.
+
+#ifndef __FILE_ENTRY_H__
+#define __FILE_ENTRY_H__
+
+#include "file_type.h"
+#include "reader.h"
+
+namespace bundle
+{
+    // FileEntry: Records information about embedded files.
+    // 
+    // The bundle manifest records the following meta-data for each 
+    // file embedded in the bundle:
+    // Fixed size portion (file_entry_fixed_t)
+    //   - Offset     
+    //   - Size       
+    //   - File Entry Type       
+    // Variable Size portion
+    //   - relative path (7-bit extension encoded length prefixed string)
+
+#pragma pack(push, 1)
+    struct file_entry_fixed_t
+    {
+        int64_t offset;
+        int64_t size;
+        file_type_t type;
+    };
+#pragma pack(pop)
+
+    class file_entry_t
+    {
+    public:
+        file_entry_t()
+            : m_offset(0)
+            , m_size(0)
+            , m_type(file_type_t::__last)
+            , m_relative_path()
+        {
+        }
+
+        file_entry_t(const file_entry_fixed_t *fixed_data)
+            :m_relative_path()
+        {
+            // File_entries in the bundle-manifest are expected to be used 
+            // beyond startup (for loading files directly from bundle, lazy extraction, etc.).
+            // The contents of fixed_data are copied on to file_entry in order to 
+            // avoid memory mapped IO later.
+
+            m_offset = fixed_data->offset;
+            m_size = fixed_data->size;
+            m_type = fixed_data->type;
+        }
+
+        const pal::string_t relative_path() const { return m_relative_path; }
+        int64_t offset() const { return m_offset; }
+        int64_t size() const { return m_size; }
+        file_type_t type() const { return m_type; }
+
+        static file_entry_t read(reader_t &reader);
+
+    private:
+        int64_t m_offset;
+        int64_t m_size;
+        file_type_t m_type;
+        pal::string_t m_relative_path; // Path of an embedded file, relative to the extraction directory.
+        bool is_valid() const;
+    };
+}
+#endif // __FILE_ENTRY_H__