| Index: source/common/ubiditransform.c
|
| diff --git a/source/common/ubiditransform.c b/source/common/ubiditransform.c
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..5f83a2b5a62e77008b1e6cfd124d84bd4f3b1d8f
|
| --- /dev/null
|
| +++ b/source/common/ubiditransform.c
|
| @@ -0,0 +1,528 @@
|
| +/*
|
| +******************************************************************************
|
| +*
|
| +* Copyright (C) 2016 and later: Unicode, Inc. and others.
|
| +* License & terms of use: http://www.unicode.org/copyright.html
|
| +*
|
| +******************************************************************************
|
| +* file name: ubiditransform.c
|
| +* encoding: US-ASCII
|
| +* tab size: 8 (not used)
|
| +* indentation:4
|
| +*
|
| +* created on: 2016jul24
|
| +* created by: Lina Kemmel
|
| +*
|
| +*/
|
| +
|
| +#include "cmemory.h"
|
| +#include "unicode/ubidi.h"
|
| +#include "unicode/ustring.h"
|
| +#include "unicode/ushape.h"
|
| +#include "unicode/utf16.h"
|
| +#include "ustr_imp.h"
|
| +#include "unicode/ubiditransform.h"
|
| +
|
| +/* Some convenience defines */
|
| +#define LTR UBIDI_LTR
|
| +#define RTL UBIDI_RTL
|
| +#define LOGICAL UBIDI_LOGICAL
|
| +#define VISUAL UBIDI_VISUAL
|
| +#define SHAPE_LOGICAL U_SHAPE_TEXT_DIRECTION_LOGICAL
|
| +#define SHAPE_VISUAL U_SHAPE_TEXT_DIRECTION_VISUAL_LTR
|
| +
|
| +#define CHECK_LEN(STR, LEN, ERROR) { \
|
| + if (LEN == 0) return 0; \
|
| + if (LEN < -1) { *(ERROR) = U_ILLEGAL_ARGUMENT_ERROR; return 0; } \
|
| + if (LEN == -1) LEN = u_strlen(STR); \
|
| + }
|
| +
|
| +#define MAX_ACTIONS 7
|
| +
|
| +/**
|
| + * Typedef for a pointer to a function, which performs some operation (such as
|
| + * reordering, setting "inverse" mode, character mirroring, etc.). Return value
|
| + * indicates whether the text was changed in the course of this operation or
|
| + * not.
|
| + */
|
| +typedef UBool (*UBiDiAction)(UBiDiTransform *, UErrorCode *);
|
| +
|
| +/**
|
| + * Structure that holds a predefined reordering scheme, including the following
|
| + * information:
|
| + * <ul>
|
| + * <li>an input base direction,</li>
|
| + * <li>an input order,</li>
|
| + * <li>an output base direction,</li>
|
| + * <li>an output order,</li>
|
| + * <li>a digit shaping direction,</li>
|
| + * <li>a letter shaping direction,</li>
|
| + * <li>a base direction that should be applied when the reordering engine is
|
| + * invoked (which can not always be derived from the caller-defined
|
| + * options),</li>
|
| + * <li>an array of pointers to functions that accomplish the bidi layout
|
| + * transformation.</li>
|
| + * </ul>
|
| + */
|
| +typedef struct {
|
| + UBiDiLevel inLevel; /* input level */
|
| + UBiDiOrder inOrder; /* input order */
|
| + UBiDiLevel outLevel; /* output level */
|
| + UBiDiOrder outOrder; /* output order */
|
| + uint32_t digitsDir; /* digit shaping direction */
|
| + uint32_t lettersDir; /* letter shaping direction */
|
| + UBiDiLevel baseLevel; /* paragraph level to be used with setPara */
|
| + const UBiDiAction actions[MAX_ACTIONS]; /* array of pointers to functions carrying out the transformation */
|
| +} ReorderingScheme;
|
| +
|
| +struct UBiDiTransform {
|
| + UBiDi *pBidi; /* pointer to a UBiDi object */
|
| + const ReorderingScheme *pActiveScheme; /* effective reordering scheme */
|
| + UChar *src; /* input text */
|
| + UChar *dest; /* output text */
|
| + uint32_t srcLength; /* input text length - not really needed as we are zero-terminated and can u_strlen */
|
| + uint32_t srcSize; /* input text capacity excluding the trailing zero */
|
| + uint32_t destSize; /* output text capacity */
|
| + uint32_t *pDestLength; /* number of UChars written to dest */
|
| + uint32_t reorderingOptions; /* reordering options - currently only suppot DO_MIRRORING */
|
| + uint32_t digits; /* digit option for ArabicShaping */
|
| + uint32_t letters; /* letter option for ArabicShaping */
|
| +};
|
| +
|
| +U_DRAFT UBiDiTransform* U_EXPORT2
|
| +ubiditransform_open(UErrorCode *pErrorCode)
|
| +{
|
| + UBiDiTransform *pBiDiTransform = NULL;
|
| + if (U_SUCCESS(*pErrorCode)) {
|
| + pBiDiTransform = (UBiDiTransform*) uprv_calloc(1, sizeof(UBiDiTransform));
|
| + if (pBiDiTransform == NULL) {
|
| + *pErrorCode = U_MEMORY_ALLOCATION_ERROR;
|
| + }
|
| + }
|
| + return pBiDiTransform;
|
| +}
|
| +
|
| +U_DRAFT void U_EXPORT2
|
| +ubiditransform_close(UBiDiTransform *pBiDiTransform)
|
| +{
|
| + if (pBiDiTransform != NULL) {
|
| + if (pBiDiTransform->pBidi != NULL) {
|
| + ubidi_close(pBiDiTransform->pBidi);
|
| + }
|
| + if (pBiDiTransform->src != NULL) {
|
| + uprv_free(pBiDiTransform->src);
|
| + }
|
| + uprv_free(pBiDiTransform);
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Performs Bidi resolution of text.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_resolve(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + ubidi_setPara(pTransform->pBidi, pTransform->src, pTransform->srcLength,
|
| + pTransform->pActiveScheme->baseLevel, NULL, pErrorCode);
|
| + return FALSE;
|
| +}
|
| +
|
| +/**
|
| + * Performs basic reordering of text (Logical -> Visual LTR).
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_reorder(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + ubidi_writeReordered(pTransform->pBidi, pTransform->dest, pTransform->destSize,
|
| + pTransform->reorderingOptions, pErrorCode);
|
| +
|
| + *pTransform->pDestLength = pTransform->srcLength;
|
| + pTransform->reorderingOptions = UBIDI_REORDER_DEFAULT;
|
| + return TRUE;
|
| +}
|
| +
|
| +/**
|
| + * Sets "inverse" mode on the <code>UBiDi</code> object.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_setInverse(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + ubidi_setInverse(pTransform->pBidi, TRUE);
|
| + ubidi_setReorderingMode(pTransform->pBidi, UBIDI_REORDER_INVERSE_LIKE_DIRECT);
|
| + return FALSE;
|
| +}
|
| +
|
| +/**
|
| + * Sets "runs only" reordering mode indicating a Logical LTR <-> Logical RTL
|
| + * transformation.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_setRunsOnly(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + ubidi_setReorderingMode(pTransform->pBidi, UBIDI_REORDER_RUNS_ONLY);
|
| + return FALSE;
|
| +}
|
| +
|
| +/**
|
| + * Performs string reverse.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_reverse(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + ubidi_writeReverse(pTransform->src, pTransform->srcLength,
|
| + pTransform->dest, pTransform->destSize,
|
| + UBIDI_REORDER_DEFAULT, pErrorCode);
|
| + *pTransform->pDestLength = pTransform->srcLength;
|
| + return TRUE;
|
| +}
|
| +
|
| +/**
|
| + * Applies a new value to the text that serves as input at the current
|
| + * processing step. This value is identical to the original one when we begin
|
| + * the processing, but usually changes as the transformation progresses.
|
| + *
|
| + * @param pTransform A pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param newSrc A pointer whose value is to be used as input text.
|
| + * @param newLength A length of the new text in <code>UChar</code>s.
|
| + * @param newSize A new source capacity in <code>UChar</code>s.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + */
|
| +static void
|
| +updateSrc(UBiDiTransform *pTransform, const UChar *newSrc, uint32_t newLength,
|
| + uint32_t newSize, UErrorCode *pErrorCode)
|
| +{
|
| + if (newSize < newLength) {
|
| + *pErrorCode = U_BUFFER_OVERFLOW_ERROR;
|
| + return;
|
| + }
|
| + if (newSize > pTransform->srcSize) {
|
| + newSize += 50; // allocate slightly more than needed right now
|
| + if (pTransform->src != NULL) {
|
| + uprv_free(pTransform->src);
|
| + pTransform->src = NULL;
|
| + }
|
| + pTransform->src = (UChar *)uprv_malloc(newSize * sizeof(UChar));
|
| + if (pTransform->src == NULL) {
|
| + *pErrorCode = U_MEMORY_ALLOCATION_ERROR;
|
| + //pTransform->srcLength = pTransform->srcSize = 0;
|
| + return;
|
| + }
|
| + pTransform->srcSize = newSize;
|
| + }
|
| + u_strncpy(pTransform->src, newSrc, newLength);
|
| + pTransform->srcLength = u_terminateUChars(pTransform->src,
|
| + pTransform->srcSize, newLength, pErrorCode);
|
| +}
|
| +
|
| +/**
|
| + * Calls a lower level shaping function.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param options Shaping options.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + */
|
| +static void
|
| +doShape(UBiDiTransform *pTransform, uint32_t options, UErrorCode *pErrorCode)
|
| +{
|
| + *pTransform->pDestLength = u_shapeArabic(pTransform->src,
|
| + pTransform->srcLength, pTransform->dest, pTransform->destSize,
|
| + options, pErrorCode);
|
| +}
|
| +
|
| +/**
|
| + * Performs digit and letter shaping.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_shapeArabic(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + if ((pTransform->letters | pTransform->digits) == 0) {
|
| + return FALSE;
|
| + }
|
| + if (pTransform->pActiveScheme->lettersDir == pTransform->pActiveScheme->digitsDir) {
|
| + doShape(pTransform, pTransform->letters | pTransform->digits | pTransform->pActiveScheme->lettersDir,
|
| + pErrorCode);
|
| + } else {
|
| + doShape(pTransform, pTransform->digits | pTransform->pActiveScheme->digitsDir, pErrorCode);
|
| + if (U_SUCCESS(*pErrorCode)) {
|
| + updateSrc(pTransform, pTransform->dest, *pTransform->pDestLength,
|
| + *pTransform->pDestLength, pErrorCode);
|
| + doShape(pTransform, pTransform->letters | pTransform->pActiveScheme->lettersDir,
|
| + pErrorCode);
|
| + }
|
| + }
|
| + return TRUE;
|
| +}
|
| +
|
| +/**
|
| + * Performs character mirroring.
|
| + *
|
| + * @param pTransform Pointer to the <code>UBiDiTransform</code> structure.
|
| + * @param pErrorCode Pointer to the error code value.
|
| + *
|
| + * @return Whether or not this function modifies the text. Besides the return
|
| + * value, the caller should also check <code>U_SUCCESS(*pErrorCode)</code>.
|
| + */
|
| +static UBool
|
| +action_mirror(UBiDiTransform *pTransform, UErrorCode *pErrorCode)
|
| +{
|
| + UChar32 c;
|
| + uint32_t i = 0, j = 0;
|
| + if (0 == (pTransform->reorderingOptions & UBIDI_DO_MIRRORING)) {
|
| + return FALSE;
|
| + }
|
| + if (pTransform->destSize < pTransform->srcLength) {
|
| + *pErrorCode = U_BUFFER_OVERFLOW_ERROR;
|
| + return FALSE;
|
| + }
|
| + do {
|
| + UBool isOdd = ubidi_getLevelAt(pTransform->pBidi, i) & 1;
|
| + U16_NEXT(pTransform->src, i, pTransform->srcLength, c);
|
| + U16_APPEND_UNSAFE(pTransform->dest, j, isOdd ? u_charMirror(c) : c);
|
| + } while (i < pTransform->srcLength);
|
| +
|
| + *pTransform->pDestLength = pTransform->srcLength;
|
| + pTransform->reorderingOptions = UBIDI_REORDER_DEFAULT;
|
| + return TRUE;
|
| +}
|
| +
|
| +/**
|
| + * All possible reordering schemes.
|
| + *
|
| + */
|
| +static const ReorderingScheme Schemes[] =
|
| +{
|
| + /* 0: Logical LTR => Visual LTR */
|
| + {LTR, LOGICAL, LTR, VISUAL, SHAPE_LOGICAL, SHAPE_LOGICAL, LTR,
|
| + {action_shapeArabic, action_resolve, action_reorder, NULL}},
|
| + /* 1: Logical RTL => Visual LTR */
|
| + {RTL, LOGICAL, LTR, VISUAL, SHAPE_LOGICAL, SHAPE_VISUAL, RTL,
|
| + {action_resolve, action_reorder, action_shapeArabic, NULL}},
|
| + /* 2: Logical LTR => Visual RTL */
|
| + {LTR, LOGICAL, RTL, VISUAL, SHAPE_LOGICAL, SHAPE_LOGICAL, LTR,
|
| + {action_shapeArabic, action_resolve, action_reorder, action_reverse, NULL}},
|
| + /* 3: Logical RTL => Visual RTL */
|
| + {RTL, LOGICAL, RTL, VISUAL, SHAPE_LOGICAL, SHAPE_VISUAL, RTL,
|
| + {action_resolve, action_reorder, action_shapeArabic, action_reverse, NULL}},
|
| + /* 4: Visual LTR => Logical RTL */
|
| + {LTR, VISUAL, RTL, LOGICAL, SHAPE_LOGICAL, SHAPE_VISUAL, RTL,
|
| + {action_shapeArabic, action_setInverse, action_resolve, action_reorder, NULL}},
|
| + /* 5: Visual RTL => Logical RTL */
|
| + {RTL, VISUAL, RTL, LOGICAL, SHAPE_LOGICAL, SHAPE_VISUAL, RTL,
|
| + {action_reverse, action_shapeArabic, action_setInverse, action_resolve, action_reorder, NULL}},
|
| + /* 6: Visual LTR => Logical LTR */
|
| + {LTR, VISUAL, LTR, LOGICAL, SHAPE_LOGICAL, SHAPE_LOGICAL, LTR,
|
| + {action_setInverse, action_resolve, action_reorder, action_shapeArabic, NULL}},
|
| + /* 7: Visual RTL => Logical LTR */
|
| + {RTL, VISUAL, LTR, LOGICAL, SHAPE_LOGICAL, SHAPE_LOGICAL, LTR,
|
| + {action_reverse, action_setInverse, action_resolve, action_reorder, action_shapeArabic, NULL}},
|
| + /* 8: Logical LTR => Logical RTL */
|
| + {LTR, LOGICAL, RTL, LOGICAL, SHAPE_LOGICAL, SHAPE_LOGICAL, LTR,
|
| + {action_shapeArabic, action_resolve, action_mirror, action_setRunsOnly, action_resolve, action_reorder, NULL}},
|
| + /* 9: Logical RTL => Logical LTR */
|
| + {RTL, LOGICAL, LTR, LOGICAL, SHAPE_LOGICAL, SHAPE_LOGICAL, RTL,
|
| + {action_resolve, action_mirror, action_setRunsOnly, action_resolve, action_reorder, action_shapeArabic, NULL}},
|
| + /* 10: Visual LTR => Visual RTL */
|
| + {LTR, VISUAL, RTL, VISUAL, SHAPE_LOGICAL, SHAPE_VISUAL, LTR,
|
| + {action_shapeArabic, action_setInverse, action_resolve, action_mirror, action_reverse, NULL}},
|
| + /* 11: Visual RTL => Visual LTR */
|
| + {RTL, VISUAL, LTR, VISUAL, SHAPE_LOGICAL, SHAPE_VISUAL, LTR,
|
| + {action_reverse, action_shapeArabic, action_setInverse, action_resolve, action_mirror, NULL}},
|
| + /* 12: Logical LTR => Logical LTR */
|
| + {LTR, LOGICAL, LTR, LOGICAL, SHAPE_LOGICAL, SHAPE_LOGICAL, LTR,
|
| + {action_resolve, action_mirror, action_shapeArabic, NULL}},
|
| + /* 13: Logical RTL => Logical RTL */
|
| + {RTL, LOGICAL, RTL, LOGICAL, SHAPE_VISUAL, SHAPE_LOGICAL, RTL,
|
| + {action_resolve, action_mirror, action_shapeArabic, NULL}},
|
| + /* 14: Visual LTR => Visual LTR */
|
| + {LTR, VISUAL, LTR, VISUAL, SHAPE_LOGICAL, SHAPE_VISUAL, LTR,
|
| + {action_resolve, action_mirror, action_shapeArabic, NULL}},
|
| + /* 15: Visual RTL => Visual RTL */
|
| + {RTL, VISUAL, RTL, VISUAL, SHAPE_LOGICAL, SHAPE_VISUAL, LTR,
|
| + {action_reverse, action_resolve, action_mirror, action_shapeArabic, action_reverse, NULL}}
|
| +};
|
| +
|
| +static const uint32_t nSchemes = sizeof(Schemes) / sizeof(*Schemes);
|
| +
|
| +/**
|
| + * When the direction option is <code>UBIDI_DEFAULT_LTR</code> or
|
| + * <code>UBIDI_DEFAULT_RTL</code>, resolve the base direction according to that
|
| + * of the first strong bidi character.
|
| + */
|
| +static void
|
| +resolveBaseDirection(const UChar *text, uint32_t length,
|
| + UBiDiLevel *pInLevel, UBiDiLevel *pOutLevel)
|
| +{
|
| + switch (*pInLevel) {
|
| + case UBIDI_DEFAULT_LTR:
|
| + case UBIDI_DEFAULT_RTL: {
|
| + UBiDiLevel level = ubidi_getBaseDirection(text, length);
|
| + *pInLevel = level != UBIDI_NEUTRAL ? level
|
| + : *pInLevel == UBIDI_DEFAULT_RTL ? RTL : LTR;
|
| + break;
|
| + }
|
| + default:
|
| + *pInLevel &= 1;
|
| + break;
|
| + }
|
| + switch (*pOutLevel) {
|
| + case UBIDI_DEFAULT_LTR:
|
| + case UBIDI_DEFAULT_RTL:
|
| + *pOutLevel = *pInLevel;
|
| + break;
|
| + default:
|
| + *pOutLevel &= 1;
|
| + break;
|
| + }
|
| +}
|
| +
|
| +/**
|
| + * Finds a valid <code>ReorderingScheme</code> matching the
|
| + * caller-defined scheme.
|
| + *
|
| + * @return A valid <code>ReorderingScheme</code> object or NULL
|
| + */
|
| +static const ReorderingScheme*
|
| +findMatchingScheme(UBiDiLevel inLevel, UBiDiLevel outLevel,
|
| + UBiDiOrder inOrder, UBiDiOrder outOrder)
|
| +{
|
| + uint32_t i;
|
| + for (i = 0; i < nSchemes; i++) {
|
| + const ReorderingScheme *pScheme = Schemes + i;
|
| + if (inLevel == pScheme->inLevel && outLevel == pScheme->outLevel
|
| + && inOrder == pScheme->inOrder && outOrder == pScheme->outOrder) {
|
| + return pScheme;
|
| + }
|
| + }
|
| + return NULL;
|
| +}
|
| +
|
| +U_DRAFT uint32_t U_EXPORT2
|
| +ubiditransform_transform(UBiDiTransform *pBiDiTransform,
|
| + const UChar *src, int32_t srcLength,
|
| + UChar *dest, int32_t destSize,
|
| + UBiDiLevel inParaLevel, UBiDiOrder inOrder,
|
| + UBiDiLevel outParaLevel, UBiDiOrder outOrder,
|
| + UBiDiMirroring doMirroring, uint32_t shapingOptions,
|
| + UErrorCode *pErrorCode)
|
| +{
|
| + uint32_t destLength = 0;
|
| + UBool textChanged = FALSE;
|
| + const UBiDiTransform *pOrigTransform = pBiDiTransform;
|
| + const UBiDiAction *action = NULL;
|
| +
|
| + if (U_FAILURE(*pErrorCode)) {
|
| + return 0;
|
| + }
|
| + if (src == NULL || dest == NULL) {
|
| + *pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
|
| + return 0;
|
| + }
|
| + CHECK_LEN(src, srcLength, pErrorCode);
|
| + CHECK_LEN(dest, destSize, pErrorCode);
|
| +
|
| + if (pBiDiTransform == NULL) {
|
| + pBiDiTransform = ubiditransform_open(pErrorCode);
|
| + if (U_FAILURE(*pErrorCode)) {
|
| + return 0;
|
| + }
|
| + }
|
| + /* Current limitation: in multiple paragraphs will be resolved according
|
| + to the 1st paragraph */
|
| + resolveBaseDirection(src, srcLength, &inParaLevel, &outParaLevel);
|
| +
|
| + pBiDiTransform->pActiveScheme = findMatchingScheme(inParaLevel, outParaLevel,
|
| + inOrder, outOrder);
|
| + if (pBiDiTransform->pActiveScheme == NULL) {
|
| + goto cleanup;
|
| + }
|
| + pBiDiTransform->reorderingOptions = doMirroring ? UBIDI_DO_MIRRORING
|
| + : UBIDI_REORDER_DEFAULT;
|
| +
|
| + /* Ignore TEXT_DIRECTION_* flags, as we apply our own depending on the text
|
| + scheme at the time shaping is invoked. */
|
| + shapingOptions &= ~U_SHAPE_TEXT_DIRECTION_MASK;
|
| + pBiDiTransform->digits = shapingOptions & ~U_SHAPE_LETTERS_MASK;
|
| + pBiDiTransform->letters = shapingOptions & ~U_SHAPE_DIGITS_MASK;
|
| +
|
| + updateSrc(pBiDiTransform, src, srcLength, destSize > srcLength ? destSize : srcLength, pErrorCode);
|
| + if (U_FAILURE(*pErrorCode)) {
|
| + goto cleanup;
|
| + }
|
| + if (pBiDiTransform->pBidi == NULL) {
|
| + pBiDiTransform->pBidi = ubidi_openSized(0, 0, pErrorCode);
|
| + if (U_FAILURE(*pErrorCode)) {
|
| + goto cleanup;
|
| + }
|
| + }
|
| + pBiDiTransform->dest = dest;
|
| + pBiDiTransform->destSize = destSize;
|
| + pBiDiTransform->pDestLength = &destLength;
|
| +
|
| + /* Checking for U_SUCCESS() within the loop to bail out on first failure. */
|
| + for (action = pBiDiTransform->pActiveScheme->actions; *action && U_SUCCESS(*pErrorCode); action++) {
|
| + if ((*action)(pBiDiTransform, pErrorCode)) {
|
| + if (action + 1) {
|
| + updateSrc(pBiDiTransform, pBiDiTransform->dest, *pBiDiTransform->pDestLength,
|
| + *pBiDiTransform->pDestLength, pErrorCode);
|
| + }
|
| + textChanged = TRUE;
|
| + }
|
| + }
|
| + ubidi_setInverse(pBiDiTransform->pBidi, FALSE);
|
| +
|
| + if (!textChanged && U_SUCCESS(*pErrorCode)) {
|
| + /* Text was not changed - just copy src to dest */
|
| + if (destSize < srcLength) {
|
| + *pErrorCode = U_BUFFER_OVERFLOW_ERROR;
|
| + } else {
|
| + u_strncpy(dest, src, srcLength);
|
| + destLength = srcLength;
|
| + }
|
| + }
|
| +cleanup:
|
| + if (pOrigTransform != pBiDiTransform) {
|
| + ubiditransform_close(pBiDiTransform);
|
| + } else {
|
| + pBiDiTransform->dest = NULL;
|
| + pBiDiTransform->pDestLength = NULL;
|
| + pBiDiTransform->srcLength = 0;
|
| + pBiDiTransform->destSize = 0;
|
| + }
|
| + return U_FAILURE(*pErrorCode) ? 0 : destLength;
|
| +}
|
|
|
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