/*

*******************************************************************************

*

*   Copyright (C) 1999-2004, International Business Machines

*   Corporation and others.  All Rights Reserved.

*

*******************************************************************************

*   file name:  uinvchar.h

*   encoding:   US-ASCII

*   tab size:   8 (not used)

*   indentation:2

*

*   created on: 2004sep14

*   created by: Markus W. Scherer

*

*   Definitions for handling invariant characters, moved here from putil.c

*   for better modularization.

*/

#ifndef __UINVCHAR_H__

#define __UINVCHAR_H__

#include "unicode/utypes.h"

/**

 * Check if a char string only contains invariant characters.

 * See utypes.h for details.

 *

 * @param s Input string pointer.

 * @param length Length of the string, can be -1 if NUL-terminated.

 * @return TRUE if s contains only invariant characters.

 *

 * @internal (ICU 2.8)

 */

U_INTERNAL UBool U_EXPORT2

uprv_isInvariantString(const char *s, int32_t length);

/**

 * Check if a Unicode string only contains invariant characters.

 * See utypes.h for details.

 *

 * @param s Input string pointer.

 * @param length Length of the string, can be -1 if NUL-terminated.

 * @return TRUE if s contains only invariant characters.

 *

 * @internal (ICU 2.8)

 */

U_INTERNAL UBool U_EXPORT2

uprv_isInvariantUString(const UChar *s, int32_t length);

/**

 * \def U_UPPER_ORDINAL

 * Get the ordinal number of an uppercase invariant character

 * @internal

 */

#if U_CHARSET_FAMILY==U_ASCII_FAMILY

#   define U_UPPER_ORDINAL(x) ((x)-'A')

#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY

#   define U_UPPER_ORDINAL(x) (((x) < 'J') ? ((x)-'A') : \

                              (((x) < 'S') ? ((x)-'J'+9) : \

                               ((x)-'S'+18)))

#else

#   error Unknown charset family!

#endif

#endif