1 /*
2 *******************************************************************************
3 *
4 * Copyright (C) 1999-2015, 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 #ifdef __cplusplus
25 #include "unicode/unistr.h"
26 #endif
27
28 /**
29 * Check if a char string only contains invariant characters.
30 * See utypes.h for details.
31 *
32 * @param s Input string pointer.
33 * @param length Length of the string, can be -1 if NUL-terminated.
34 * @return TRUE if s contains only invariant characters.
35 *
36 * @internal (ICU 2.8)
37 */
38 U_INTERNAL UBool U_EXPORT2
39 uprv_isInvariantString(const char *s, int32_t length);
40
41 /**
42 * Check if a Unicode string only contains invariant characters.
43 * See utypes.h for details.
44 *
45 * @param s Input string pointer.
46 * @param length Length of the string, can be -1 if NUL-terminated.
47 * @return TRUE if s contains only invariant characters.
48 *
49 * @internal (ICU 2.8)
50 */
51 U_INTERNAL UBool U_EXPORT2
52 uprv_isInvariantUString(const UChar *s, int32_t length);
53
54 #ifdef __cplusplus
55
56 /**
57 * Check if a UnicodeString only contains invariant characters.
58 * See utypes.h for details.
59 *
60 * @param s Input string.
61 * @return TRUE if s contains only invariant characters.
62 */
63 U_INTERNAL inline UBool U_EXPORT2
uprv_isInvariantUnicodeString(const icu::UnicodeString & s)64 uprv_isInvariantUnicodeString(const icu::UnicodeString &s) {
65 return uprv_isInvariantUString(s.getBuffer(), s.length());
66 }
67
68 #endif /* __cplusplus */
69
70 /**
71 * \def U_UPPER_ORDINAL
72 * Get the ordinal number of an uppercase invariant character
73 * @internal
74 */
75 #if U_CHARSET_FAMILY==U_ASCII_FAMILY
76 # define U_UPPER_ORDINAL(x) ((x)-'A')
77 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
78 # define U_UPPER_ORDINAL(x) (((x) < 'J') ? ((x)-'A') : \
79 (((x) < 'S') ? ((x)-'J'+9) : \
80 ((x)-'S'+18)))
81 #else
82 # error Unknown charset family!
83 #endif
84
85 /**
86 * Compare two EBCDIC invariant-character strings in ASCII order.
87 * @internal
88 */
89 U_INTERNAL int32_t U_EXPORT2
90 uprv_compareInvEbcdicAsAscii(const char *s1, const char *s2);
91
92 /**
93 * \def uprv_compareInvCharsAsAscii
94 * Compare two invariant-character strings in ASCII order.
95 * @internal
96 */
97 #if U_CHARSET_FAMILY==U_ASCII_FAMILY
98 # define uprv_compareInvCharsAsAscii(s1, s2) uprv_strcmp(s1, s2)
99 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
100 # define uprv_compareInvCharsAsAscii(s1, s2) uprv_compareInvEbcdicAsAscii(s1, s2)
101 #else
102 # error Unknown charset family!
103 #endif
104
105 /**
106 * Converts an EBCDIC invariant character to lowercase ASCII.
107 * @internal
108 */
109 U_INTERNAL char U_EXPORT2
110 uprv_ebcdicToLowercaseAscii(char c);
111
112 /**
113 * \def uprv_invCharToLowercaseAscii
114 * Converts an invariant character to lowercase ASCII.
115 * @internal
116 */
117 #if U_CHARSET_FAMILY==U_ASCII_FAMILY
118 # define uprv_invCharToLowercaseAscii uprv_asciitolower
119 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
120 # define uprv_invCharToLowercaseAscii uprv_ebcdicToLowercaseAscii
121 #else
122 # error Unknown charset family!
123 #endif
124
125 /**
126 * Copy EBCDIC to ASCII
127 * @internal
128 * @see uprv_strncpy
129 */
130 U_INTERNAL uint8_t* U_EXPORT2
131 uprv_aestrncpy(uint8_t *dst, const uint8_t *src, int32_t n);
132
133
134 /**
135 * Copy ASCII to EBCDIC
136 * @internal
137 * @see uprv_strncpy
138 */
139 U_INTERNAL uint8_t* U_EXPORT2
140 uprv_eastrncpy(uint8_t *dst, const uint8_t *src, int32_t n);
141
142
143
144 #endif
145