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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 1999-2004, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* uconv_cnv.c:
* Implements all the low level conversion functions
* T_UnicodeConverter_{to,from}Unicode_$ConversionType
*
* Change history:
*
* 06/29/2000 helena Major rewrite of the callback APIs.
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_CONVERSION
#include "unicode/ucnv_err.h"
#include "unicode/ucnv.h"
#include "unicode/uset.h"
#include "ucnv_cnv.h"
#include "ucnv_bld.h"
#include "cmemory.h"
U_CFUNC void
ucnv_getCompleteUnicodeSet(const UConverter *cnv,
const USetAdder *sa,
UConverterUnicodeSet which,
UErrorCode *pErrorCode) {
(void)cnv;
(void)which;
(void)pErrorCode;
sa->addRange(sa->set, 0, 0x10ffff);
}
U_CFUNC void
ucnv_getNonSurrogateUnicodeSet(const UConverter *cnv,
const USetAdder *sa,
UConverterUnicodeSet which,
UErrorCode *pErrorCode) {
(void)cnv;
(void)which;
(void)pErrorCode;
sa->addRange(sa->set, 0, 0xd7ff);
sa->addRange(sa->set, 0xe000, 0x10ffff);
}
U_CFUNC void
ucnv_fromUWriteBytes(UConverter *cnv,
const char *bytes, int32_t length,
char **target, const char *targetLimit,
int32_t **offsets,
int32_t sourceIndex,
UErrorCode *pErrorCode) {
char *t=*target;
int32_t *o;
/* write bytes */
if(offsets==nullptr || (o=*offsets)==nullptr) {
while(length>0 && t<targetLimit) {
*t++=*bytes++;
--length;
}
} else {
/* output with offsets */
while(length>0 && t<targetLimit) {
*t++=*bytes++;
*o++=sourceIndex;
--length;
}
*offsets=o;
}
*target=t;
/* write overflow */
if(length>0) {
if(cnv!=nullptr) {
t=(char *)cnv->charErrorBuffer;
cnv->charErrorBufferLength=(int8_t)length;
do {
*t++=(uint8_t)*bytes++;
} while(--length>0);
}
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
}
}
U_CFUNC void
ucnv_toUWriteUChars(UConverter *cnv,
const char16_t *uchars, int32_t length,
char16_t **target, const char16_t *targetLimit,
int32_t **offsets,
int32_t sourceIndex,
UErrorCode *pErrorCode) {
char16_t *t=*target;
int32_t *o;
/* write UChars */
if(offsets==nullptr || (o=*offsets)==nullptr) {
while(length>0 && t<targetLimit) {
*t++=*uchars++;
--length;
}
} else {
/* output with offsets */
while(length>0 && t<targetLimit) {
*t++=*uchars++;
*o++=sourceIndex;
--length;
}
*offsets=o;
}
*target=t;
/* write overflow */
if(length>0) {
if(cnv!=nullptr) {
t=cnv->UCharErrorBuffer;
cnv->UCharErrorBufferLength=(int8_t)length;
do {
*t++=*uchars++;
} while(--length>0);
}
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
}
}
U_CFUNC void
ucnv_toUWriteCodePoint(UConverter *cnv,
UChar32 c,
char16_t **target, const char16_t *targetLimit,
int32_t **offsets,
int32_t sourceIndex,
UErrorCode *pErrorCode) {
char16_t *t;
int32_t *o;
t=*target;
if(t<targetLimit) {
if(c<=0xffff) {
*t++=(char16_t)c;
c=U_SENTINEL;
} else /* c is a supplementary code point */ {
*t++=U16_LEAD(c);
c=U16_TRAIL(c);
if(t<targetLimit) {
*t++=(char16_t)c;
c=U_SENTINEL;
}
}
/* write offsets */
if(offsets!=nullptr && (o=*offsets)!=nullptr) {
*o++=sourceIndex;
if((*target+1)<t) {
*o++=sourceIndex;
}
*offsets=o;
}
}
*target=t;
/* write overflow from c */
if(c>=0) {
if(cnv!=nullptr) {
int8_t i=0;
U16_APPEND_UNSAFE(cnv->UCharErrorBuffer, i, c);
cnv->UCharErrorBufferLength=i;
}
*pErrorCode=U_BUFFER_OVERFLOW_ERROR;
}
}
#endif
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