1 // 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ******************************************************************************* 5 * 6 * Copyright (C) 1999-2015, International Business Machines 7 * Corporation and others. All Rights Reserved. 8 * 9 ******************************************************************************* 10 * file name: uinvchar.h 11 * encoding: UTF-8 12 * tab size: 8 (not used) 13 * indentation:2 14 * 15 * created on: 2004sep14 16 * created by: Markus W. Scherer 17 * 18 * Definitions for handling invariant characters, moved here from putil.c 19 * for better modularization. 20 */ 21 22 #ifndef __UINVCHAR_H__ 23 #define __UINVCHAR_H__ 24 25 #include "unicode/utypes.h" 26 #ifdef __cplusplus 27 #include "unicode/unistr.h" 28 #endif 29 30 /** 31 * Check if a char string only contains invariant characters. 32 * See utypes.h for details. 33 * 34 * @param s Input string pointer. 35 * @param length Length of the string, can be -1 if NUL-terminated. 36 * @return TRUE if s contains only invariant characters. 37 * 38 * @internal (ICU 2.8) 39 */ 40 U_INTERNAL UBool U_EXPORT2 41 uprv_isInvariantString(const char *s, int32_t length); 42 43 /** 44 * Check if a Unicode string only contains invariant characters. 45 * See utypes.h for details. 46 * 47 * @param s Input string pointer. 48 * @param length Length of the string, can be -1 if NUL-terminated. 49 * @return TRUE if s contains only invariant characters. 50 * 51 * @internal (ICU 2.8) 52 */ 53 U_INTERNAL UBool U_EXPORT2 54 uprv_isInvariantUString(const UChar *s, int32_t length); 55 56 #ifdef __cplusplus 57 58 /** 59 * Check if a UnicodeString only contains invariant characters. 60 * See utypes.h for details. 61 * 62 * @param s Input string. 63 * @return TRUE if s contains only invariant characters. 64 */ 65 U_INTERNAL inline UBool U_EXPORT2 66 uprv_isInvariantUnicodeString(const icu::UnicodeString &s) { 67 return uprv_isInvariantUString(icu::toUCharPtr(s.getBuffer()), s.length()); 68 } 69 70 #endif /* __cplusplus */ 71 72 /** 73 * \def U_UPPER_ORDINAL 74 * Get the ordinal number of an uppercase invariant character 75 * @internal 76 */ 77 #if U_CHARSET_FAMILY==U_ASCII_FAMILY 78 # define U_UPPER_ORDINAL(x) ((x)-'A') 79 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY 80 # define U_UPPER_ORDINAL(x) (((x) < 'J') ? ((x)-'A') : \ 81 (((x) < 'S') ? ((x)-'J'+9) : \ 82 ((x)-'S'+18))) 83 #else 84 # error Unknown charset family! 85 #endif 86 87 /** 88 * Compare two EBCDIC invariant-character strings in ASCII order. 89 * @internal 90 */ 91 U_INTERNAL int32_t U_EXPORT2 92 uprv_compareInvEbcdicAsAscii(const char *s1, const char *s2); 93 94 /** 95 * \def uprv_compareInvCharsAsAscii 96 * Compare two invariant-character strings in ASCII order. 97 * @internal 98 */ 99 #if U_CHARSET_FAMILY==U_ASCII_FAMILY 100 # define uprv_compareInvCharsAsAscii(s1, s2) uprv_strcmp(s1, s2) 101 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY 102 # define uprv_compareInvCharsAsAscii(s1, s2) uprv_compareInvEbcdicAsAscii(s1, s2) 103 #else 104 # error Unknown charset family! 105 #endif 106 107 /** 108 * Converts an EBCDIC invariant character to lowercase ASCII. 109 * @internal 110 */ 111 U_INTERNAL char U_EXPORT2 112 uprv_ebcdicToLowercaseAscii(char c); 113 114 /** 115 * \def uprv_invCharToLowercaseAscii 116 * Converts an invariant character to lowercase ASCII. 117 * @internal 118 */ 119 #if U_CHARSET_FAMILY==U_ASCII_FAMILY 120 # define uprv_invCharToLowercaseAscii uprv_asciitolower 121 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY 122 # define uprv_invCharToLowercaseAscii uprv_ebcdicToLowercaseAscii 123 #else 124 # error Unknown charset family! 125 #endif 126 127 /** 128 * Copy EBCDIC to ASCII 129 * @internal 130 * @see uprv_strncpy 131 */ 132 U_INTERNAL uint8_t* U_EXPORT2 133 uprv_aestrncpy(uint8_t *dst, const uint8_t *src, int32_t n); 134 135 136 /** 137 * Copy ASCII to EBCDIC 138 * @internal 139 * @see uprv_strncpy 140 */ 141 U_INTERNAL uint8_t* U_EXPORT2 142 uprv_eastrncpy(uint8_t *dst, const uint8_t *src, int32_t n); 143 144 145 146 #endif 147
