1 /*

     2 *******************************************************************************

     3 *

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

     5 *   Corporation and others.  All Rights Reserved.

     6 *

     7 *******************************************************************************

     8 *   file name:  uinvchar.h

     9 *   encoding:   US-ASCII

    10 *   tab size:   8 (not used)

    11 *   indentation:2

    12 *

    13 *   created on: 2004sep14

    14 *   created by: Markus W. Scherer

    15 *

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

    17 *   for better modularization.

    18 */

    19 

    20 #ifndef __UINVCHAR_H__

    21 #define __UINVCHAR_H__

    22 

    23 #include "unicode/utypes.h"

    24 

    25 /**

    26  * Check if a char string only contains invariant characters.

    27  * See utypes.h for details.

    28  *

    29  * @param s Input string pointer.

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

    31  * @return TRUE if s contains only invariant characters.

    32  *

    33  * @internal (ICU 2.8)

    34  */

    35 U_INTERNAL UBool U_EXPORT2

    36 uprv_isInvariantString(const char *s, int32_t length);

    37 

    38 /**

    39  * Check if a Unicode string only contains invariant characters.

    40  * See utypes.h for details.

    41  *

    42  * @param s Input string pointer.

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

    44  * @return TRUE if s contains only invariant characters.

    45  *

    46  * @internal (ICU 2.8)

    47  */

    48 U_INTERNAL UBool U_EXPORT2

    49 uprv_isInvariantUString(const UChar *s, int32_t length);

    50 

    51 /**

    52  * \def U_UPPER_ORDINAL

    53  * Get the ordinal number of an uppercase invariant character

    54  * @internal

    55  */

    56 #if U_CHARSET_FAMILY==U_ASCII_FAMILY

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

    58 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY

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

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

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

    62 #else

    63 #   error Unknown charset family!

    64 #endif

    65 

    66 #endif