U_CAPI UBiDiDirection U_EXPORT2
ubidi_getVisualRun(UBiDi *pBiDi, int32_t runIndex,
int32_t *pLogicalStart, int32_t *pLength)
{
int32_t start;
UErrorCode errorCode = U_ZERO_ERROR;
RETURN_IF_NOT_VALID_PARA_OR_LINE(pBiDi, errorCode, UBIDI_LTR);
ubidi_getRuns(pBiDi, &errorCode);
if(U_FAILURE(errorCode)) {
return UBIDI_LTR;
}
RETURN_IF_BAD_RANGE(runIndex, 0, pBiDi->runCount, errorCode, UBIDI_LTR);
start=pBiDi->runs[runIndex].logicalStart;
if(pLogicalStart!=NULL) {
*pLogicalStart=GET_INDEX(start);
}
if(pLength!=NULL) {
if(runIndex>0) {
*pLength=pBiDi->runs[runIndex].visualLimit-
pBiDi->runs[runIndex-1].visualLimit;
} else {
*pLength=pBiDi->runs[0].visualLimit;
}
}
return (UBiDiDirection)GET_ODD_BIT(start);
}
U_CAPI void U_EXPORT2
ubidi_getLogicalRun(const UBiDi * pBiDi, int32_t logicalPosition,
int32_t * pLogicalLimit, UBiDiLevel * pLevel)
{
UErrorCode errorCode;
int32_t runCount, visualStart, logicalLimit, logicalFirst, i;
Run iRun;
errorCode = U_ZERO_ERROR;
RETURN_VOID_IF_BAD_RANGE(logicalPosition, 0, pBiDi->length, errorCode);
/* ubidi_countRuns will check VALID_PARA_OR_LINE */
runCount = ubidi_countRuns((UBiDi *)pBiDi, &errorCode);
if (U_FAILURE(errorCode))
{
return;
}
/* this is done based on runs rather than on levels since levels have
a special interpretation when UBIDI_REORDER_RUNS_ONLY
*/
visualStart = logicalLimit = 0;
iRun = pBiDi->runs[0];
for (i = 0; i < runCount; i++)
{
iRun = pBiDi->runs[i];
logicalFirst = GET_INDEX(iRun.logicalStart);
logicalLimit = logicalFirst + iRun.visualLimit - visualStart;
if ((logicalPosition >= logicalFirst) &&
(logicalPosition < logicalLimit))
{
break;
}
visualStart = iRun.visualLimit;
}
if (pLogicalLimit)
{
*pLogicalLimit = logicalLimit;
}
if (pLevel)
{
if (pBiDi->reorderingMode == UBIDI_REORDER_RUNS_ONLY)
{
*pLevel = (UBiDiLevel)GET_ODD_BIT(iRun.logicalStart);
}
else if (pBiDi->direction != UBIDI_MIXED || logicalPosition >= pBiDi->trailingWSStart)
{
*pLevel = GET_PARALEVEL(pBiDi, logicalPosition);
}
else
{
*pLevel = pBiDi->levels[logicalPosition];
}
}
}
U_CAPI UBiDiDirection U_EXPORT2
ubidi_getVisualRun(UBiDi *pBiDi, int32_t runIndex,
int32_t *pLogicalStart, int32_t *pLength) {
if( pBiDi==NULL || runIndex<0 ||
(pBiDi->runCount==-1 && !ubidi_getRuns(pBiDi)) ||
runIndex>=pBiDi->runCount
) {
return UBIDI_LTR;
} else {
int32_t start=pBiDi->runs[runIndex].logicalStart;
if(pLogicalStart!=NULL) {
*pLogicalStart=GET_INDEX(start);
}
if(pLength!=NULL) {
if(runIndex>0) {
*pLength=pBiDi->runs[runIndex].visualLimit-
pBiDi->runs[runIndex-1].visualLimit;
} else {
*pLength=pBiDi->runs[0].visualLimit;
}
}
return (UBiDiDirection)GET_ODD_BIT(start);
}
}
