--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/LESwaps.h	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,121 @@
+
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
+ *
+ */
+
+#ifndef __LESWAPS_H
+#define __LESWAPS_H
+
+#include "LETypes.h"
+
+/**
+ * \file 
+ * \brief C++ API: Endian independent access to data for LayoutEngine
+ */
+
+U_NAMESPACE_BEGIN
+
+/**
+ * A convenience macro which invokes the swapWord member function
+ * from a concise call.
+ *
+ * @stable ICU 2.8
+ */
+#if defined(U_IS_BIG_ENDIAN)
+    #if U_IS_BIG_ENDIAN
+        #define SWAPW(value) (value)
+    #else
+        #define SWAPW(value) LESwaps::swapWord(value)
+    #endif
+#else
+    #define SWAPW(value) (LESwaps::isBigEndian() ? (value) : LESwaps::swapWord(value))
+#endif
+
+/**
+ * A convenience macro which invokes the swapLong member function
+ * from a concise call.
+ *
+ * @stable ICU 2.8
+ */
+#if defined(U_IS_BIG_ENDIAN)
+    #if U_IS_BIG_ENDIAN
+        #define SWAPL(value) (value)
+    #else
+        #define SWAPL(value) LESwaps::swapLong(value)
+    #endif
+#else
+    #define SWAPL(value) (LESwaps::isBigEndian() ? (value) : LESwaps::swapLong(value))
+#endif
+
+/**
+ * This class is used to access data which stored in big endian order
+ * regardless of the conventions of the platform. It has been designed
+ * to automatically detect the endian-ness of the platform, so that a
+ * compilation flag is not needed.
+ *
+ * All methods are static and inline in an attempt to induce the compiler
+ * to do most of the calculations at compile time.
+ *
+ * @stable ICU 2.8
+ */
+class U_LAYOUT_API LESwaps /* not : public UObject because all methods are static */ {
+public:
+
+#if !defined(U_IS_BIG_ENDIAN)
+    /**
+     * This method detects the endian-ness of the platform by
+     * casting a pointer to a word to a pointer to a byte. On
+     * big endian platforms the FF will be in the byte with the
+     * lowest address. On little endian platforms, the FF will
+     * be in the byte with the highest address.
+     *
+     * @return TRUE if the platform is big endian
+     *
+     * @stable ICU 2.8
+     */
+    static le_uint8 isBigEndian()
+    {
+        const le_uint16 word = 0xFF00;
+
+        return *((le_uint8 *) &word);
+    };
+#endif
+
+    /**
+     * This method does the byte swap required on little endian platforms
+     * to correctly access a (16-bit) word.
+     *
+     * @param value - the word to be byte swapped
+     *
+     * @return the byte swapped word
+     *
+     * @stable ICU 2.8
+     */
+    static le_uint16 swapWord(le_uint16 value)
+    {
+        return (((le_uint8) (value >> 8)) | (value << 8));
+    };
+
+    /**
+     * This method does the byte swapping required on little endian platforms
+     * to correctly access a (32-bit) long.
+     *
+     * @param value - the long to be byte swapped
+     *
+     * @return the byte swapped long
+     *
+     * @stable ICU 2.8
+     */
+    static le_uint32 swapLong(le_uint32 value)
+    {
+        return swapWord((le_uint16) (value >> 16)) | (swapWord((le_uint16) value) << 16);
+    };
+
+private:
+    LESwaps() {} // private - forbid instantiation
+};
+
+U_NAMESPACE_END
+#endif