2 *******************************************************************************
4 * Copyright (C) 1998-2008, International Business Machines
5 * Corporation and others. All Rights Reserved.
7 *******************************************************************************
11 * Modification History:
13 * Date Name Description
14 * 05/28/99 stephen Creation.
15 *******************************************************************************
21 #include "unicode/ustring.h"
22 #include "unicode/putil.h"
25 static void ustr_resize(struct UString *s, int32_t len, UErrorCode *status);
28 #define ALLOCATION(minSize) (minSize < 0x80 ? 0x80 : (2 * minSize + 0x80) & ~(0x80 - 1))
31 ustr_init(struct UString *s)
34 s->fLength = s->fCapacity = 0;
38 ustr_initChars(struct UString *s, const char* source, int32_t length, UErrorCode *status)
41 if (U_FAILURE(*status)) return;
43 s->fLength = s->fCapacity = 0;
45 length = (int32_t)uprv_strlen(source);
47 if(s->fCapacity < length) {
48 ustr_resize(s, ALLOCATION(length), status);
49 if(U_FAILURE(*status)) return;
51 for (; i < length; i++)
54 u_charsToUChars(source+i, &charToAppend, 1);
55 ustr_ucat(s, charToAppend, status);
57 #if U_CHARSET_FAMILY==U_ASCII_FAMILY
58 ustr_ucat(s, (UChar)(uint8_t)(source[i]), status);
59 #elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
60 ustr_ucat(s, (UChar)asciiFromEbcdic[(uint8_t)(*cs++)], status);
62 # error U_CHARSET_FAMILY is not valid
69 ustr_deinit(struct UString *s)
74 s->fLength = s->fCapacity = 0;
79 ustr_cpy(struct UString *dst,
80 const struct UString *src,
83 if(U_FAILURE(*status) || dst == src)
86 if(dst->fCapacity < src->fLength) {
87 ustr_resize(dst, ALLOCATION(src->fLength), status);
88 if(U_FAILURE(*status))
91 if(src->fChars == NULL || dst->fChars == NULL){
94 uprv_memcpy(dst->fChars, src->fChars, sizeof(UChar) * src->fLength);
95 dst->fLength = src->fLength;
96 dst->fChars[dst->fLength] = 0x0000;
100 ustr_setlen(struct UString *s,
104 if(U_FAILURE(*status))
107 if(s->fCapacity < (len + 1)) {
108 ustr_resize(s, ALLOCATION(len), status);
109 if(U_FAILURE(*status))
114 s->fChars[len] = 0x0000;
118 ustr_cat(struct UString *dst,
119 const struct UString *src,
122 ustr_ncat(dst, src, src->fLength, status);
126 ustr_ncat(struct UString *dst,
127 const struct UString *src,
131 if(U_FAILURE(*status) || dst == src)
134 if(dst->fCapacity < (dst->fLength + n)) {
135 ustr_resize(dst, ALLOCATION(dst->fLength + n), status);
136 if(U_FAILURE(*status))
140 uprv_memcpy(dst->fChars + dst->fLength, src->fChars,
142 dst->fLength += src->fLength;
143 dst->fChars[dst->fLength] = 0x0000;
147 ustr_ucat(struct UString *dst,
151 if(U_FAILURE(*status))
154 if(dst->fCapacity < (dst->fLength + 1)) {
155 ustr_resize(dst, ALLOCATION(dst->fLength + 1), status);
156 if(U_FAILURE(*status))
160 uprv_memcpy(dst->fChars + dst->fLength, &c,
163 dst->fChars[dst->fLength] = 0x0000;
166 ustr_u32cat(struct UString *dst, UChar32 c, UErrorCode *status){
168 *status = U_ILLEGAL_CHAR_FOUND;
172 ustr_ucat(dst, U16_LEAD(c), status);
173 ustr_ucat(dst, U16_TRAIL(c), status);
175 ustr_ucat(dst, (UChar) c, status);
179 ustr_uscat(struct UString *dst,
180 const UChar* src,int len,
183 if(U_FAILURE(*status))
186 if(dst->fCapacity < (dst->fLength + len)) {
187 ustr_resize(dst, ALLOCATION(dst->fLength + len), status);
188 if(U_FAILURE(*status))
192 uprv_memcpy(dst->fChars + dst->fLength, src,
193 sizeof(UChar) * len);
195 dst->fChars[dst->fLength] = 0x0000;
198 /* Destroys data in the string */
200 ustr_resize(struct UString *s,
204 if(U_FAILURE(*status))
207 /* +1 for trailing 0x0000 */
208 s->fChars = (UChar*) uprv_realloc(s->fChars, sizeof(UChar) * (len + 1));
210 *status = U_MEMORY_ALLOCATION_ERROR;
211 s->fLength = s->fCapacity = 0;