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/*
*******************************************************************************
*
* Copyright (C) 1998-2006, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
*
* File ustr.c
*
* Modification History:
*
* Date Name Description
* 05/28/99 stephen Creation.
*******************************************************************************
*/
#include "ustr.h"
#include "cmemory.h"
#include "cstring.h"
#include "unicode/ustring.h"
#include "unicode/putil.h"
/* Protos */
static void ustr_resize(struct UString *s, int32_t len, UErrorCode *status);
/* Macros */
#define ALLOCATION(minSize) (minSize < 0x80 ? 0x80 : (2 * minSize + 0x80) & ~(0x80 - 1))
void
ustr_init(struct UString *s)
{
s->fChars = 0;
s->fLength = s->fCapacity = 0;
}
void
ustr_initChars(struct UString *s, const char* source, int32_t length, UErrorCode *status)
{
int i = 0;
if (U_FAILURE(*status)) return;
s->fChars = 0;
s->fLength = s->fCapacity = 0;
if (length == -1) {
length = (int32_t)uprv_strlen(source);
}
if(s->fCapacity < length) {
ustr_resize(s, ALLOCATION(length), status);
if(U_FAILURE(*status)) return;
}
for (; i < length; i++)
{
UChar charToAppend;
u_charsToUChars(source+i, &charToAppend, 1);
ustr_ucat(s, charToAppend, status);
/*
#if U_CHARSET_FAMILY==U_ASCII_FAMILY
ustr_ucat(s, (UChar)(uint8_t)(source[i]), status);
#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
ustr_ucat(s, (UChar)asciiFromEbcdic[(uint8_t)(*cs++)], status);
#else
# error U_CHARSET_FAMILY is not valid
#endif
*/
}
}
void
ustr_deinit(struct UString *s)
{
uprv_free(s->fChars);
s->fChars = 0;
s->fLength = s->fCapacity = 0;
}
void
ustr_cpy(struct UString *dst,
const struct UString *src,
UErrorCode *status)
{
if(U_FAILURE(*status) || dst == src)
return;
if(dst->fCapacity < src->fLength) {
ustr_resize(dst, ALLOCATION(src->fLength), status);
if(U_FAILURE(*status))
return;
}
if(src->fChars == NULL || dst->fChars == NULL){
return;
}
uprv_memcpy(dst->fChars, src->fChars, sizeof(UChar) * src->fLength);
dst->fLength = src->fLength;
dst->fChars[dst->fLength] = 0x0000;
}
void
ustr_setlen(struct UString *s,
int32_t len,
UErrorCode *status)
{
if(U_FAILURE(*status))
return;
if(s->fCapacity < (len + 1)) {
ustr_resize(s, ALLOCATION(len), status);
if(U_FAILURE(*status))
return;
}
s->fLength = len;
s->fChars[len] = 0x0000;
}
void
ustr_cat(struct UString *dst,
const struct UString *src,
UErrorCode *status)
{
ustr_ncat(dst, src, src->fLength, status);
}
void
ustr_ncat(struct UString *dst,
const struct UString *src,
int32_t n,
UErrorCode *status)
{
if(U_FAILURE(*status) || dst == src)
return;
if(dst->fCapacity < (dst->fLength + n)) {
ustr_resize(dst, ALLOCATION(dst->fLength + n), status);
if(U_FAILURE(*status))
return;
}
uprv_memcpy(dst->fChars + dst->fLength, src->fChars,
sizeof(UChar) * n);
dst->fLength += src->fLength;
dst->fChars[dst->fLength] = 0x0000;
}
void
ustr_ucat(struct UString *dst,
UChar c,
UErrorCode *status)
{
if(U_FAILURE(*status))
return;
if(dst->fCapacity < (dst->fLength + 1)) {
ustr_resize(dst, ALLOCATION(dst->fLength + 1), status);
if(U_FAILURE(*status))
return;
}
uprv_memcpy(dst->fChars + dst->fLength, &c,
sizeof(UChar) * 1);
dst->fLength += 1;
dst->fChars[dst->fLength] = 0x0000;
}
void
ustr_u32cat(struct UString *dst, UChar32 c, UErrorCode *status){
if(c > 0x10FFFF){
*status = U_ILLEGAL_CHAR_FOUND;
return;
}
if(c >0xFFFF){
ustr_ucat(dst, U16_LEAD(c), status);
ustr_ucat(dst, U16_TRAIL(c), status);
}else{
ustr_ucat(dst, (UChar) c, status);
}
}
void
ustr_uscat(struct UString *dst,
const UChar* src,int len,
UErrorCode *status)
{
if(U_FAILURE(*status))
return;
if(dst->fCapacity < (dst->fLength + len)) {
ustr_resize(dst, ALLOCATION(dst->fLength + len), status);
if(U_FAILURE(*status))
return;
}
uprv_memcpy(dst->fChars + dst->fLength, src,
sizeof(UChar) * len);
dst->fLength += len;
dst->fChars[dst->fLength] = 0x0000;
}
/* Destroys data in the string */
static void
ustr_resize(struct UString *s,
int32_t len,
UErrorCode *status)
{
if(U_FAILURE(*status))
return;
/* +1 for trailing 0x0000 */
s->fChars = (UChar*) uprv_realloc(s->fChars, sizeof(UChar) * (len + 1));
if(s->fChars == 0) {
*status = U_MEMORY_ALLOCATION_ERROR;
s->fLength = s->fCapacity = 0;
return;
}
s->fCapacity = len;
}
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