virtual int32_t move32(int32_t delta, CharacterIterator::EOrigin origin){
switch(origin) {
case kStart:
pos = begin;
if(delta > 0) {
U16_FWD_N(text, pos, end, delta);
}
break;
case kCurrent:
if(delta > 0) {
U16_FWD_N(text, pos, end, delta);
} else {
U16_BACK_N(text, begin, pos, -delta);
}
break;
case kEnd:
pos = end;
if(delta < 0) {
U16_BACK_N(text, begin, pos, -delta);
}
break;
default:
break;
}
return pos;
};
int utf16_cp_to_cu(const UChar *ustring, int32_t ustring_len, long cp_offset, int32_t *cu_offset, UErrorCode *status)
{
if (0 != cp_offset) {
int32_t _cp_count = u_countChar32(ustring, ustring_len);
if (cp_offset < 0) {
if (cp_offset < -_cp_count) {
*status = U_INDEX_OUTOFBOUNDS_ERROR;
return FAILURE;
}
*cu_offset = ustring_len;
U16_BACK_N(ustring, 0, *cu_offset, -cp_offset);
} else {
if (cp_offset >= _cp_count) {
*status = U_INDEX_OUTOFBOUNDS_ERROR;
return FAILURE;
}
U16_FWD_N(ustring, *cu_offset, ustring_len, cp_offset);
}
}
return SUCCESS;
}
U_CFUNC int32_t
u_strFromPunycode(const UChar *src, int32_t srcLength,
UChar *dest, int32_t destCapacity,
UBool *caseFlags,
UErrorCode *pErrorCode) {
int32_t n, destLength, i, bias, basicLength, j, in, oldi, w, k, digit, t,
destCPCount, firstSupplementaryIndex, cpLength;
UChar b;
/* argument checking */
if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
return 0;
}
if(src==NULL || srcLength<-1 || (dest==NULL && destCapacity!=0)) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
if(srcLength==-1) {
srcLength=u_strlen(src);
}
/*
* Handle the basic code points:
* Let basicLength be the number of input code points
* before the last delimiter, or 0 if there is none,
* then copy the first basicLength code points to the output.
*
* The two following loops iterate backward.
*/
for(j=srcLength; j>0;) {
if(src[--j]==DELIMITER) {
break;
}
}
destLength=basicLength=destCPCount=j;
U_ASSERT(destLength>=0);
while(j>0) {
b=src[--j];
if(!IS_BASIC(b)) {
*pErrorCode=U_INVALID_CHAR_FOUND;
return 0;
}
if(j<destCapacity) {
dest[j]=(UChar)b;
if(caseFlags!=NULL) {
caseFlags[j]=IS_BASIC_UPPERCASE(b);
}
}
}
/* Initialize the state: */
n=INITIAL_N;
i=0;
bias=INITIAL_BIAS;
firstSupplementaryIndex=1000000000;
/*
* Main decoding loop:
* Start just after the last delimiter if any
* basic code points were copied; start at the beginning otherwise.
*/
for(in=basicLength>0 ? basicLength+1 : 0; in<srcLength; /* no op */) {
/*
* in is the index of the next character to be consumed, and
* destCPCount is the number of code points in the output array.
*
* Decode a generalized variable-length integer into delta,
* which gets added to i. The overflow checking is easier
* if we increase i as we go, then subtract off its starting
* value at the end to obtain delta.
*/
for(oldi=i, w=1, k=BASE; /* no condition */; k+=BASE) {
if(in>=srcLength) {
*pErrorCode=U_ILLEGAL_CHAR_FOUND;
return 0;
}
digit=basicToDigit[(uint8_t)src[in++]];
if(digit<0) {
*pErrorCode=U_INVALID_CHAR_FOUND;
return 0;
}
if(digit>(0x7fffffff-i)/w) {
/* integer overflow */
*pErrorCode=U_ILLEGAL_CHAR_FOUND;
return 0;
}
i+=digit*w;
/** RAM: comment out the old code for conformance with draft-ietf-idn-punycode-03.txt
t=k-bias;
if(t<TMIN) {
t=TMIN;
} else if(t>TMAX) {
t=TMAX;
}
*/
t=k-bias;
if(t<TMIN) {
t=TMIN;
} else if(k>=(bias+TMAX)) {
t=TMAX;
}
if(digit<t) {
break;
}
if(w>0x7fffffff/(BASE-t)) {
/* integer overflow */
*pErrorCode=U_ILLEGAL_CHAR_FOUND;
return 0;
}
w*=BASE-t;
}
/*
* Modification from sample code:
* Increments destCPCount here,
* where needed instead of in for() loop tail.
*/
++destCPCount;
bias=adaptBias(i-oldi, destCPCount, (UBool)(oldi==0));
/*
* i was supposed to wrap around from (incremented) destCPCount to 0,
* incrementing n each time, so we'll fix that now:
*/
if(i/destCPCount>(0x7fffffff-n)) {
/* integer overflow */
*pErrorCode=U_ILLEGAL_CHAR_FOUND;
return 0;
}
n+=i/destCPCount;
i%=destCPCount;
/* not needed for Punycode: */
/* if (decode_digit(n) <= BASE) return punycode_invalid_input; */
if(n>0x10ffff || U_IS_SURROGATE(n)) {
/* Unicode code point overflow */
*pErrorCode=U_ILLEGAL_CHAR_FOUND;
return 0;
}
/* Insert n at position i of the output: */
cpLength=U16_LENGTH(n);
if(dest!=NULL && ((destLength+cpLength)<=destCapacity)) {
int32_t codeUnitIndex;
/*
* Handle indexes when supplementary code points are present.
*
* In almost all cases, there will be only BMP code points before i
* and even in the entire string.
* This is handled with the same efficiency as with UTF-32.
*
* Only the rare cases with supplementary code points are handled
* more slowly - but not too bad since this is an insertion anyway.
*/
if(i<=firstSupplementaryIndex) {
codeUnitIndex=i;
if(cpLength>1) {
firstSupplementaryIndex=codeUnitIndex;
} else {
++firstSupplementaryIndex;
}
} else {
codeUnitIndex=firstSupplementaryIndex;
U16_FWD_N(dest, codeUnitIndex, destLength, i-codeUnitIndex);
}
/* use the UChar index codeUnitIndex instead of the code point index i */
if(codeUnitIndex<destLength) {
uprv_memmove(dest+codeUnitIndex+cpLength,
dest+codeUnitIndex,
(destLength-codeUnitIndex)*U_SIZEOF_UCHAR);
if(caseFlags!=NULL) {
uprv_memmove(caseFlags+codeUnitIndex+cpLength,
caseFlags+codeUnitIndex,
destLength-codeUnitIndex);
}
}
if(cpLength==1) {
/* BMP, insert one code unit */
dest[codeUnitIndex]=(UChar)n;
} else {
/* supplementary character, insert two code units */
dest[codeUnitIndex]=U16_LEAD(n);
dest[codeUnitIndex+1]=U16_TRAIL(n);
}
if(caseFlags!=NULL) {
/* Case of last character determines uppercase flag: */
caseFlags[codeUnitIndex]=IS_BASIC_UPPERCASE(src[in-1]);
if(cpLength==2) {
caseFlags[codeUnitIndex+1]=FALSE;
}
}
}
destLength+=cpLength;
U_ASSERT(destLength>=0);
++i;
}
return u_terminateUChars(dest, destCapacity, destLength, pErrorCode);
}
static void TestFwdBack(){
static UChar input[]={0x0061, 0xd800, 0xdc00, 0xdbff, 0xdfff, 0x0062, 0xd841, 0xd7ff, 0xd841, 0xdc41, 0xdc00, 0x0000};
static uint16_t fwd_unsafe[] ={1, 3, 5, 6, 8, 10, 11, 12};
static uint16_t fwd_safe[] ={1, 3, 5, 6, 7, 8, 10, 11, 12};
static uint16_t back_unsafe[]={11, 9, 8, 7, 6, 5, 3, 1, 0};
static uint16_t back_safe[] ={11, 10, 8, 7, 6, 5, 3, 1, 0};
static uint16_t Nvalue[]= {0, 1, 2, 3, 1, 2, 1};
static uint16_t fwd_N_unsafe[] ={0, 1, 5, 10, 11};
static uint16_t fwd_N_safe[] ={0, 1, 5, 8, 10, 12, 12}; /*safe macro keeps it at the end of the string */
static uint16_t back_N_unsafe[]={12, 11, 8, 5, 3};
static uint16_t back_N_safe[] ={12, 11, 8, 5, 3, 0, 0};
uint16_t offunsafe=0, offsafe=0;
uint16_t i=0;
while(offunsafe < sizeof(input)/U_SIZEOF_UCHAR){
UTF16_FWD_1_UNSAFE(input, offunsafe);
if(offunsafe != fwd_unsafe[i]){
log_err("ERROR: Forward_unsafe offset expected:%d, Got:%d\n", fwd_unsafe[i], offunsafe);
}
i++;
}
offunsafe=0, offsafe=0;
i=0;
while(offunsafe < sizeof(input)/U_SIZEOF_UCHAR){
U16_FWD_1_UNSAFE(input, offunsafe);
if(offunsafe != fwd_unsafe[i]){
log_err("ERROR: U16_FWD_1_UNSAFE offset expected:%d, Got:%d\n", fwd_unsafe[i], offunsafe);
}
i++;
}
i=0;
while(offsafe < sizeof(input)/U_SIZEOF_UCHAR){
UTF16_FWD_1_SAFE(input, offsafe, sizeof(input)/U_SIZEOF_UCHAR);
if(offsafe != fwd_safe[i]){
log_err("ERROR: Forward_safe offset expected:%d, Got:%d\n", fwd_safe[i], offsafe);
}
i++;
}
i=0;
while(offsafe < sizeof(input)/U_SIZEOF_UCHAR){
U16_FWD_1(input, offsafe, sizeof(input)/U_SIZEOF_UCHAR);
if(offsafe != fwd_safe[i]){
log_err("ERROR: U16_FWD_1 offset expected:%d, Got:%d\n", fwd_safe[i], offsafe);
}
i++;
}
offunsafe=sizeof(input)/U_SIZEOF_UCHAR;
offsafe=sizeof(input)/U_SIZEOF_UCHAR;
i=0;
while(offunsafe > 0){
UTF16_BACK_1_UNSAFE(input, offunsafe);
if(offunsafe != back_unsafe[i]){
log_err("ERROR: Backward_unsafe offset expected:%d, Got:%d\n", back_unsafe[i], offunsafe);
}
i++;
}
offunsafe=sizeof(input)/U_SIZEOF_UCHAR;
offsafe=sizeof(input)/U_SIZEOF_UCHAR;
i=0;
while(offunsafe > 0){
U16_BACK_1_UNSAFE(input, offunsafe);
if(offunsafe != back_unsafe[i]){
log_err("ERROR: U16_BACK_1_UNSAFE offset expected:%d, Got:%d\n", back_unsafe[i], offunsafe);
}
i++;
}
i=0;
while(offsafe > 0){
UTF16_BACK_1_SAFE(input,0, offsafe);
if(offsafe != back_safe[i]){
log_err("ERROR: Backward_safe offset expected:%d, Got:%d\n", back_unsafe[i], offsafe);
}
i++;
}
i=0;
while(offsafe > 0){
U16_BACK_1(input,0, offsafe);
if(offsafe != back_safe[i]){
log_err("ERROR: U16_BACK_1 offset expected:%d, Got:%d\n", back_unsafe[i], offsafe);
}
i++;
}
offunsafe=0;
offsafe=0;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){ /*didn't want it to fail(we assume 0<i<length)*/
UTF16_FWD_N_UNSAFE(input, offunsafe, Nvalue[i]);
if(offunsafe != fwd_N_unsafe[i]){
log_err("ERROR: Forward_N_unsafe offset expected:%d, Got:%d\n", fwd_N_unsafe[i], offunsafe);
}
}
offunsafe=0;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){ /*didn't want it to fail(we assume 0<i<length)*/
U16_FWD_N_UNSAFE(input, offunsafe, Nvalue[i]);
if(offunsafe != fwd_N_unsafe[i]){
log_err("ERROR: U16_FWD_N_UNSAFE offset expected:%d, Got:%d\n", fwd_N_unsafe[i], offunsafe);
}
}
offsafe=0;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
UTF16_FWD_N_SAFE(input, offsafe, sizeof(input)/U_SIZEOF_UCHAR, Nvalue[i]);
if(offsafe != fwd_N_safe[i]){
log_err("ERROR: Forward_N_safe offset expected:%d, Got:%d\n", fwd_N_safe[i], offsafe);
}
}
offsafe=0;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
U16_FWD_N(input, offsafe, sizeof(input)/U_SIZEOF_UCHAR, Nvalue[i]);
if(offsafe != fwd_N_safe[i]){
log_err("ERROR: U16_FWD_N offset expected:%d, Got:%d\n", fwd_N_safe[i], offsafe);
}
}
offunsafe=sizeof(input)/U_SIZEOF_UCHAR;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){
UTF16_BACK_N_UNSAFE(input, offunsafe, Nvalue[i]);
if(offunsafe != back_N_unsafe[i]){
log_err("ERROR: backward_N_unsafe offset expected:%d, Got:%d\n", back_N_unsafe[i], offunsafe);
}
}
offunsafe=sizeof(input)/U_SIZEOF_UCHAR;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0])-2; i++){
U16_BACK_N_UNSAFE(input, offunsafe, Nvalue[i]);
if(offunsafe != back_N_unsafe[i]){
log_err("ERROR: U16_BACK_N_UNSAFE offset expected:%d, Got:%d\n", back_N_unsafe[i], offunsafe);
}
}
offsafe=sizeof(input)/U_SIZEOF_UCHAR;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
UTF16_BACK_N_SAFE(input, 0, offsafe, Nvalue[i]);
if(offsafe != back_N_safe[i]){
log_err("ERROR: backward_N_safe offset expected:%d, Got:%d\n", back_N_safe[i], offsafe);
}
}
offsafe=sizeof(input)/U_SIZEOF_UCHAR;
for(i=0; i<sizeof(Nvalue)/sizeof(Nvalue[0]); i++){
U16_BACK_N(input, 0, offsafe, Nvalue[i]);
if(offsafe != back_N_safe[i]){
log_err("ERROR: U16_BACK_N offset expected:%d, Got:%d\n", back_N_safe[i], offsafe);
}
}
}
/* keep this in sync with utf8tst.c's TestNulTerminated() */
static void TestNulTerminated() {
static const UChar input[]={
/* 0 */ 0x61,
/* 1 */ 0xd801, 0xdc01,
/* 3 */ 0xdc01,
/* 4 */ 0x62,
/* 5 */ 0xd801,
/* 6 */ 0x00
/* 7 */
};
static const UChar32 result[]={
0x61,
0x10401,
0xdc01,
0x62,
0xd801,
0
};
UChar32 c, c2;
int32_t i0, i=0, j, k, expectedIndex;
int32_t cpIndex=0;
do {
i0=i;
U16_NEXT(input, i, -1, c);
if(c!=result[cpIndex]) {
log_err("U16_NEXT(from %d)=U+%04x != U+%04x\n", i0, c, result[cpIndex]);
}
j=i0;
U16_FWD_1(input, j, -1);
if(j!=i) {
log_err("U16_FWD_1() moved to index %d but U16_NEXT() moved to %d\n", j, i);
}
++cpIndex;
/*
* Move by this many code points from the start.
* U16_FWD_N() stops at the end of the string, that is, at the NUL if necessary.
*/
expectedIndex= (c==0) ? i-1 : i;
k=0;
U16_FWD_N(input, k, -1, cpIndex);
if(k!=expectedIndex) {
log_err("U16_FWD_N(code points from 0) moved to index %d but expected %d\n", k, expectedIndex);
}
} while(c!=0);
i=0;
do {
j=i0=i;
U16_NEXT(input, i, -1, c);
do {
U16_GET(input, 0, j, -1, c2);
if(c2!=c) {
log_err("U16_NEXT(from %d)=U+%04x != U+%04x=U16_GET(at %d)\n", i0, c, c2, j);
}
/* U16_SET_CP_LIMIT moves from a non-lead byte to the limit of the code point */
k=j+1;
U16_SET_CP_LIMIT(input, 0, k, -1);
if(k!=i) {
log_err("U16_NEXT() moved to %d but U16_SET_CP_LIMIT(%d) moved to %d\n", i, j+1, k);
}
} while(++j<i);
} while(c!=0);
}