The Tor Browser: comparison intl/icu/source/common/ubidi

--1:000000000000
+:091f74692d0b
+/*
+*******************************************************************************
+*
+*   Copyright (C) 2004-2013, International Business Machines
+*   Corporation and others.  All Rights Reserved.
+*
+*******************************************************************************
+*   file name:  ubidi_props.c
+*   encoding:   US-ASCII
+*   tab size:   8 (not used)
+*   indentation:4
+*
+*   created on: 2004dec30
+*   created by: Markus W. Scherer
+*
+*   Low-level Unicode bidi/shaping properties access.
+*/
+#include "unicode/utypes.h"
+#include "unicode/uset.h"
+#include "unicode/udata.h" /* UDataInfo */
+#include "ucmndata.h" /* DataHeader */
+#include "udatamem.h"
+#include "uassert.h"
+#include "cmemory.h"
+#include "utrie2.h"
+#include "ubidi_props.h"
+#include "ucln_cmn.h"
+struct UBiDiProps {
+UDataMemory *mem;
+const int32_t *indexes;
+const uint32_t *mirrors;
+const uint8_t *jgArray;
+UTrie2 trie;
+uint8_t formatVersion[4];
+};
+/* ubidi_props_data.h is machine-generated by genbidi --csource */
+#define INCLUDED_FROM_UBIDI_PROPS_C
+#include "ubidi_props_data.h"
+/* UBiDiProps singleton ----------------------------------------------------- */
+U_CFUNC const UBiDiProps *
+ubidi_getSingleton() {
+return &ubidi_props_singleton;
+}
+/* set of property starts for UnicodeSet ------------------------------------ */
+static UBool U_CALLCONV
+_enumPropertyStartsRange(const void *context, UChar32 start, UChar32 end, uint32_t value) {
+/* add the start code point to the USet */
+const USetAdder *sa=(const USetAdder *)context;
+sa->add(sa->set, start);
+return TRUE;
+}
+U_CFUNC void
+ubidi_addPropertyStarts(const UBiDiProps *bdp, const USetAdder *sa, UErrorCode *pErrorCode) {
+int32_t i, length;
+UChar32 c, start, limit;
+const uint8_t *jgArray;
+uint8_t prev, jg;
+if(U_FAILURE(*pErrorCode)) {
+return;
+}
+/* add the start code point of each same-value range of the trie */
+utrie2_enum(&bdp->trie, NULL, _enumPropertyStartsRange, sa);
+/* add the code points from the bidi mirroring table */
+length=bdp->indexes[UBIDI_IX_MIRROR_LENGTH];
+for(i=0; i<length; ++i) {
+c=UBIDI_GET_MIRROR_CODE_POINT(bdp->mirrors[i]);
+sa->addRange(sa->set, c, c+1);
+}
+/* add the code points from the Joining_Group array where the value changes */
+start=bdp->indexes[UBIDI_IX_JG_START];
+limit=bdp->indexes[UBIDI_IX_JG_LIMIT];
+jgArray=bdp->jgArray;
+prev=0;
+while(start<limit) {
+jg=*jgArray++;
+if(jg!=prev) {
+sa->add(sa->set, start);
+prev=jg;
+}
+++start;
+}
+if(prev!=0) {
+/* add the limit code point if the last value was not 0 (it is now start==limit) */
+sa->add(sa->set, limit);
+}
+/* add code points with hardcoded properties, plus the ones following them */
+/* (none right now) */
+}
+/* property access functions ------------------------------------------------ */
+U_CFUNC int32_t
+ubidi_getMaxValue(const UBiDiProps *bdp, UProperty which) {
+int32_t max;
+if(bdp==NULL) {
+return -1;
+}
+max=bdp->indexes[UBIDI_MAX_VALUES_INDEX];
+switch(which) {
+case UCHAR_BIDI_CLASS:
+return (max&UBIDI_CLASS_MASK);
+case UCHAR_JOINING_GROUP:
+return (max&UBIDI_MAX_JG_MASK)>>UBIDI_MAX_JG_SHIFT;
+case UCHAR_JOINING_TYPE:
+return (max&UBIDI_JT_MASK)>>UBIDI_JT_SHIFT;
+case UCHAR_BIDI_PAIRED_BRACKET_TYPE:
+return (max&UBIDI_BPT_MASK)>>UBIDI_BPT_SHIFT;
+default:
+return -1; /* undefined */
+}
+}
+U_CAPI UCharDirection
+ubidi_getClass(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return (UCharDirection)UBIDI_GET_CLASS(props);
+}
+U_CFUNC UBool
+ubidi_isMirrored(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return (UBool)UBIDI_GET_FLAG(props, UBIDI_IS_MIRRORED_SHIFT);
+}
+static UChar32
+getMirror(const UBiDiProps *bdp, UChar32 c, uint16_t props) {
+int32_t delta=UBIDI_GET_MIRROR_DELTA(props);
+if(delta!=UBIDI_ESC_MIRROR_DELTA) {
+return c+delta;
+} else {
+/* look for mirror code point in the mirrors[] table */
+const uint32_t *mirrors;
+uint32_t m;
+int32_t i, length;
+UChar32 c2;
+mirrors=bdp->mirrors;
+length=bdp->indexes[UBIDI_IX_MIRROR_LENGTH];
+/* linear search */
+for(i=0; i<length; ++i) {
+m=mirrors[i];
+c2=UBIDI_GET_MIRROR_CODE_POINT(m);
+if(c==c2) {
+/* found c, return its mirror code point using the index in m */
+return UBIDI_GET_MIRROR_CODE_POINT(mirrors[UBIDI_GET_MIRROR_INDEX(m)]);
+} else if(c<c2) {
+break;
+}
+}
+/* c not found, return it itself */
+return c;
+}
+}
+U_CFUNC UChar32
+ubidi_getMirror(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return getMirror(bdp, c, props);
+}
+U_CFUNC UBool
+ubidi_isBidiControl(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return (UBool)UBIDI_GET_FLAG(props, UBIDI_BIDI_CONTROL_SHIFT);
+}
+U_CFUNC UBool
+ubidi_isJoinControl(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return (UBool)UBIDI_GET_FLAG(props, UBIDI_JOIN_CONTROL_SHIFT);
+}
+U_CFUNC UJoiningType
+ubidi_getJoiningType(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return (UJoiningType)((props&UBIDI_JT_MASK)>>UBIDI_JT_SHIFT);
+}
+U_CFUNC UJoiningGroup
+ubidi_getJoiningGroup(const UBiDiProps *bdp, UChar32 c) {
+UChar32 start, limit;
+start=bdp->indexes[UBIDI_IX_JG_START];
+limit=bdp->indexes[UBIDI_IX_JG_LIMIT];
+if(start<=c && c<limit) {
+return (UJoiningGroup)bdp->jgArray[c-start];
+} else {
+return U_JG_NO_JOINING_GROUP;
+}
+}
+U_CFUNC UBidiPairedBracketType
+ubidi_getPairedBracketType(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+return (UBidiPairedBracketType)((props&UBIDI_BPT_MASK)>>UBIDI_BPT_SHIFT);
+}
+U_CFUNC UChar32
+ubidi_getPairedBracket(const UBiDiProps *bdp, UChar32 c) {
+uint16_t props=UTRIE2_GET16(&bdp->trie, c);
+if((props&UBIDI_BPT_MASK)==0) {
+return c;
+} else {
+return getMirror(bdp, c, props);
+}
+}
+/* public API (see uchar.h) ------------------------------------------------- */
+U_CFUNC UCharDirection
+u_charDirection(UChar32 c) {
+return ubidi_getClass(&ubidi_props_singleton, c);
+}
+U_CFUNC UBool
+u_isMirrored(UChar32 c) {
+return ubidi_isMirrored(&ubidi_props_singleton, c);
+}
+U_CFUNC UChar32
+u_charMirror(UChar32 c) {
+return ubidi_getMirror(&ubidi_props_singleton, c);
+}
+U_STABLE UChar32 U_EXPORT2
+u_getBidiPairedBracket(UChar32 c) {
+return ubidi_getPairedBracket(&ubidi_props_singleton, c);
+}

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comparison: intl/icu/source/common/ubidi_props.c

intl/icu/source/common/ubidi_props.c