michael@0: /*
michael@0: *******************************************************************************
michael@0: *
michael@0: *   Copyright (C) 1999-2010, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: *
michael@0: *******************************************************************************
michael@0: *   file name:  uinvchar.h
michael@0: *   encoding:   US-ASCII
michael@0: *   tab size:   8 (not used)
michael@0: *   indentation:2
michael@0: *
michael@0: *   created on: 2004sep14
michael@0: *   created by: Markus W. Scherer
michael@0: *
michael@0: *   Definitions for handling invariant characters, moved here from putil.c
michael@0: *   for better modularization.
michael@0: */
michael@0: 
michael@0: #ifndef __UINVCHAR_H__
michael@0: #define __UINVCHAR_H__
michael@0: 
michael@0: #include "unicode/utypes.h"
michael@0: 
michael@0: /**
michael@0:  * Check if a char string only contains invariant characters.
michael@0:  * See utypes.h for details.
michael@0:  *
michael@0:  * @param s Input string pointer.
michael@0:  * @param length Length of the string, can be -1 if NUL-terminated.
michael@0:  * @return TRUE if s contains only invariant characters.
michael@0:  *
michael@0:  * @internal (ICU 2.8)
michael@0:  */
michael@0: U_INTERNAL UBool U_EXPORT2
michael@0: uprv_isInvariantString(const char *s, int32_t length);
michael@0: 
michael@0: /**
michael@0:  * Check if a Unicode string only contains invariant characters.
michael@0:  * See utypes.h for details.
michael@0:  *
michael@0:  * @param s Input string pointer.
michael@0:  * @param length Length of the string, can be -1 if NUL-terminated.
michael@0:  * @return TRUE if s contains only invariant characters.
michael@0:  *
michael@0:  * @internal (ICU 2.8)
michael@0:  */
michael@0: U_INTERNAL UBool U_EXPORT2
michael@0: uprv_isInvariantUString(const UChar *s, int32_t length);
michael@0: 
michael@0: /**
michael@0:  * \def U_UPPER_ORDINAL
michael@0:  * Get the ordinal number of an uppercase invariant character
michael@0:  * @internal
michael@0:  */
michael@0: #if U_CHARSET_FAMILY==U_ASCII_FAMILY
michael@0: #   define U_UPPER_ORDINAL(x) ((x)-'A')
michael@0: #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
michael@0: #   define U_UPPER_ORDINAL(x) (((x) < 'J') ? ((x)-'A') : \
michael@0:                               (((x) < 'S') ? ((x)-'J'+9) : \
michael@0:                                ((x)-'S'+18)))
michael@0: #else
michael@0: #   error Unknown charset family!
michael@0: #endif
michael@0: 
michael@0: /**
michael@0:  * Compare two EBCDIC invariant-character strings in ASCII order.
michael@0:  * @internal
michael@0:  */
michael@0: U_INTERNAL int32_t U_EXPORT2
michael@0: uprv_compareInvEbcdicAsAscii(const char *s1, const char *s2);
michael@0: 
michael@0: /**
michael@0:  * \def uprv_compareInvCharsAsAscii
michael@0:  * Compare two invariant-character strings in ASCII order.
michael@0:  * @internal
michael@0:  */
michael@0: #if U_CHARSET_FAMILY==U_ASCII_FAMILY
michael@0: #   define uprv_compareInvCharsAsAscii(s1, s2) uprv_strcmp(s1, s2)
michael@0: #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
michael@0: #   define uprv_compareInvCharsAsAscii(s1, s2) uprv_compareInvEbcdicAsAscii(s1, s2)
michael@0: #else
michael@0: #   error Unknown charset family!
michael@0: #endif
michael@0: 
michael@0: /**
michael@0:  * Converts an EBCDIC invariant character to lowercase ASCII.
michael@0:  * @internal
michael@0:  */
michael@0: U_INTERNAL char U_EXPORT2
michael@0: uprv_ebcdicToLowercaseAscii(char c);
michael@0: 
michael@0: /**
michael@0:  * \def uprv_invCharToLowercaseAscii
michael@0:  * Converts an invariant character to lowercase ASCII.
michael@0:  * @internal
michael@0:  */
michael@0: #if U_CHARSET_FAMILY==U_ASCII_FAMILY
michael@0: #   define uprv_invCharToLowercaseAscii uprv_asciitolower
michael@0: #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
michael@0: #   define uprv_invCharToLowercaseAscii uprv_ebcdicToLowercaseAscii
michael@0: #else
michael@0: #   error Unknown charset family!
michael@0: #endif
michael@0: 
michael@0: /**
michael@0:  * Copy EBCDIC to ASCII
michael@0:  * @internal
michael@0:  * @see uprv_strncpy
michael@0:  */
michael@0: U_INTERNAL uint8_t* U_EXPORT2
michael@0: uprv_aestrncpy(uint8_t *dst, const uint8_t *src, int32_t n);
michael@0: 
michael@0: 
michael@0: /**
michael@0:  * Copy ASCII to EBCDIC
michael@0:  * @internal
michael@0:  * @see uprv_strncpy
michael@0:  */
michael@0: U_INTERNAL uint8_t* U_EXPORT2
michael@0: uprv_eastrncpy(uint8_t *dst, const uint8_t *src, int32_t n);
michael@0: 
michael@0: 
michael@0: 
michael@0: #endif