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comparison: intl/icu/source/common/ustr_imp.h

intl/icu/source/common/ustr_imp.h

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1 /*
2 **********************************************************************
3 * Copyright (C) 1999-2011, International Business Machines
4 * Corporation and others. All Rights Reserved.
5 **********************************************************************
6 * file name: ustr_imp.h
7 * encoding: US-ASCII
8 * tab size: 8 (not used)
9 * indentation:4
10 *
11 * created on: 2001jan30
12 * created by: Markus W. Scherer
13 */
14
15 #ifndef __USTR_IMP_H__
16 #define __USTR_IMP_H__
17
18 #include "unicode/utypes.h"
19 #include "unicode/uiter.h"
20 #include "ucase.h"
21
22 /** Simple declaration to avoid including unicode/ubrk.h. */
23 #ifndef UBRK_TYPEDEF_UBREAK_ITERATOR
24 # define UBRK_TYPEDEF_UBREAK_ITERATOR
25 typedef struct UBreakIterator UBreakIterator;
26 #endif
27
28 #ifndef U_COMPARE_IGNORE_CASE
29 /* see also unorm.h */
30 /**
31 * Option bit for unorm_compare:
32 * Perform case-insensitive comparison.
33 */
34 #define U_COMPARE_IGNORE_CASE 0x10000
35 #endif
36
37 /**
38 * Internal option for unorm_cmpEquivFold() for strncmp style.
39 * If set, checks for both string length and terminating NUL.
40 */
41 #define _STRNCMP_STYLE 0x1000
42
43 /**
44 * Compare two strings in code point order or code unit order.
45 * Works in strcmp style (both lengths -1),
46 * strncmp style (lengths equal and >=0, flag TRUE),
47 * and memcmp/UnicodeString style (at least one length >=0).
48 */
49 U_CFUNC int32_t U_EXPORT2
50 uprv_strCompare(const UChar *s1, int32_t length1,
51 const UChar *s2, int32_t length2,
52 UBool strncmpStyle, UBool codePointOrder);
53
54 /**
55 * Internal API, used by u_strcasecmp() etc.
56 * Compare strings case-insensitively,
57 * in code point order or code unit order.
58 */
59 U_CFUNC int32_t
60 u_strcmpFold(const UChar *s1, int32_t length1,
61 const UChar *s2, int32_t length2,
62 uint32_t options,
63 UErrorCode *pErrorCode);
64
65 /**
66 * Are the Unicode properties loaded?
67 * This must be used before internal functions are called that do
68 * not perform this check.
69 * Generate a debug assertion failure if data is not loaded.
70 */
71 U_CFUNC UBool
72 uprv_haveProperties(UErrorCode *pErrorCode);
73
74 /**
75 * Load the Unicode property data.
76 * Intended primarily for use from u_init().
77 * Has no effect if property data is already loaded.
78 * NOT thread safe.
79 */
80 /*U_CFUNC int8_t
81 uprv_loadPropsData(UErrorCode *errorCode);*/
82
83 /*
84 * Internal string casing functions implementing
85 * ustring.h/ustrcase.c and UnicodeString case mapping functions.
86 */
87
88 struct UCaseMap {
89 const UCaseProps *csp;
90 #if !UCONFIG_NO_BREAK_ITERATION
91 UBreakIterator *iter; /* We adopt the iterator, so we own it. */
92 #endif
93 char locale[32];
94 int32_t locCache;
95 uint32_t options;
96 };
97
98 #ifndef __UCASEMAP_H__
99 typedef struct UCaseMap UCaseMap;
100 #endif
101
102 #if UCONFIG_NO_BREAK_ITERATION
103 # define UCASEMAP_INITIALIZER { NULL, { 0 }, 0, 0 }
104 #else
105 # define UCASEMAP_INITIALIZER { NULL, NULL, { 0 }, 0, 0 }
106 #endif
107
108 U_CFUNC void
109 ustrcase_setTempCaseMapLocale(UCaseMap *csm, const char *locale);
110
111 #ifndef U_STRING_CASE_MAPPER_DEFINED
112 #define U_STRING_CASE_MAPPER_DEFINED
113
114 /**
115 * String case mapping function type, used by ustrcase_map().
116 * All error checking must be done.
117 * The UCaseMap must be fully initialized, with locale and/or iter set as needed.
118 * src and dest must not overlap.
119 */
120 typedef int32_t U_CALLCONV
121 UStringCaseMapper(const UCaseMap *csm,
122 UChar *dest, int32_t destCapacity,
123 const UChar *src, int32_t srcLength,
124 UErrorCode *pErrorCode);
125
126 #endif
127
128 /** Implements UStringCaseMapper. */
129 U_CFUNC int32_t U_CALLCONV
130 ustrcase_internalToLower(const UCaseMap *csm,
131 UChar *dest, int32_t destCapacity,
132 const UChar *src, int32_t srcLength,
133 UErrorCode *pErrorCode);
134
135 /** Implements UStringCaseMapper. */
136 U_CFUNC int32_t U_CALLCONV
137 ustrcase_internalToUpper(const UCaseMap *csm,
138 UChar *dest, int32_t destCapacity,
139 const UChar *src, int32_t srcLength,
140 UErrorCode *pErrorCode);
141
142 #if !UCONFIG_NO_BREAK_ITERATION
143
144 /** Implements UStringCaseMapper. */
145 U_CFUNC int32_t U_CALLCONV
146 ustrcase_internalToTitle(const UCaseMap *csm,
147 UChar *dest, int32_t destCapacity,
148 const UChar *src, int32_t srcLength,
149 UErrorCode *pErrorCode);
150
151 #endif
152
153 /** Implements UStringCaseMapper. */
154 U_CFUNC int32_t U_CALLCONV
155 ustrcase_internalFold(const UCaseMap *csm,
156 UChar *dest, int32_t destCapacity,
157 const UChar *src, int32_t srcLength,
158 UErrorCode *pErrorCode);
159
160 /**
161 * Implements argument checking and buffer handling
162 * for string case mapping as a common function.
163 */
164 U_CFUNC int32_t
165 ustrcase_map(const UCaseMap *csm,
166 UChar *dest, int32_t destCapacity,
167 const UChar *src, int32_t srcLength,
168 UStringCaseMapper *stringCaseMapper,
169 UErrorCode *pErrorCode);
170
171 /**
172 * UTF-8 string case mapping function type, used by ucasemap_mapUTF8().
173 * UTF-8 version of UStringCaseMapper.
174 * All error checking must be done.
175 * The UCaseMap must be fully initialized, with locale and/or iter set as needed.
176 * src and dest must not overlap.
177 */
178 typedef int32_t U_CALLCONV
179 UTF8CaseMapper(const UCaseMap *csm,
180 uint8_t *dest, int32_t destCapacity,
181 const uint8_t *src, int32_t srcLength,
182 UErrorCode *pErrorCode);
183
184 /** Implements UTF8CaseMapper. */
185 U_CFUNC int32_t U_CALLCONV
186 ucasemap_internalUTF8ToTitle(const UCaseMap *csm,
187 uint8_t *dest, int32_t destCapacity,
188 const uint8_t *src, int32_t srcLength,
189 UErrorCode *pErrorCode);
190
191 /**
192 * Implements argument checking and buffer handling
193 * for UTF-8 string case mapping as a common function.
194 */
195 U_CFUNC int32_t
196 ucasemap_mapUTF8(const UCaseMap *csm,
197 uint8_t *dest, int32_t destCapacity,
198 const uint8_t *src, int32_t srcLength,
199 UTF8CaseMapper *stringCaseMapper,
200 UErrorCode *pErrorCode);
201
202 U_CAPI int32_t U_EXPORT2
203 ustr_hashUCharsN(const UChar *str, int32_t length);
204
205 U_CAPI int32_t U_EXPORT2
206 ustr_hashCharsN(const char *str, int32_t length);
207
208 U_CAPI int32_t U_EXPORT2
209 ustr_hashICharsN(const char *str, int32_t length);
210
211 /**
212 * NUL-terminate a UChar * string if possible.
213 * If length < destCapacity then NUL-terminate.
214 * If length == destCapacity then do not terminate but set U_STRING_NOT_TERMINATED_WARNING.
215 * If length > destCapacity then do not terminate but set U_BUFFER_OVERFLOW_ERROR.
216 *
217 * @param dest Destination buffer, can be NULL if destCapacity==0.
218 * @param destCapacity Number of UChars available at dest.
219 * @param length Number of UChars that were (to be) written to dest.
220 * @param pErrorCode ICU error code.
221 * @return length
222 */
223 U_CAPI int32_t U_EXPORT2
224 u_terminateUChars(UChar *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
225
226 /**
227 * NUL-terminate a char * string if possible.
228 * Same as u_terminateUChars() but for a different string type.
229 */
230 U_CAPI int32_t U_EXPORT2
231 u_terminateChars(char *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
232
233 /**
234 * NUL-terminate a UChar32 * string if possible.
235 * Same as u_terminateUChars() but for a different string type.
236 */
237 U_CAPI int32_t U_EXPORT2
238 u_terminateUChar32s(UChar32 *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
239
240 /**
241 * NUL-terminate a wchar_t * string if possible.
242 * Same as u_terminateUChars() but for a different string type.
243 */
244 U_CAPI int32_t U_EXPORT2
245 u_terminateWChars(wchar_t *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
246
247 #endif

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