1 files changed, 31 insertions, 1 deletions
diff --git a/lib/Handle.cc b/lib/Handle.cc
index 83eb15d..2006b19 100644
--- a/lib/Handle.cc
+++ b/lib/Handle.cc
@@ -37,7 +37,7 @@ enum {
     INFLATE
 };
 
-Handle::Handle(const Handle & nh) : itell(0), h(nh.h >= 0 ? dup(nh.h) : nh.h), closed(nh.closed), nonblock(nh.closed), zfile(0), z(0)
+Handle::Handle(const Handle & nh) : itell(0), hFile(0), h(nh.h >= 0 ? dup(nh.h) : nh.h), closed(nh.closed), nonblock(nh.closed), zfile(0), z(0)
 {
 #ifdef DEBUG
     printm(M_INFO, String(_("Duplication of handle ")) + nh.h + _(" to ") + h + "\n");
@@ -513,3 +513,33 @@ void Handle::Flush() {
 #endif
     }
 }
+
+void * Handle::mmap(off_t offset, size_t length) {
+    if (length == -1) {
+	length = GetSize();
+    }
+#ifndef _WIN32    
+    return ::mmap(0, length, (CanRead() ? PROT_READ : 0) | (CanWrite() ? PROT_WRITE : 0), MAP_SHARED, h, offset);
+#else
+    void * lpvMem = 0;
+    hMapObject = CreateFileMapping(
+	hFile,
+        0,
+	CanWrite() ? PAGE_READWRITE : PAGE_READONLY,
+        0,
+        length,
+        GetName().to_charp());
+    if (hMapObject != NULL) {
+	lpvMem = MapViewOfFile( 
+	    hMapObject,
+	    CanWrite() ? FILE_MAP_WRITE : FILE_MAP_READ,
+	    0,
+	    offset,
+	    length);
+	if (lpvMem == NULL) {
+	    CloseHandle(hMapObject);
+	}
+    }
+    return lpvMem;
+#endif
+}