+/*
+*******************************************************************************
+*
+* Copyright (C) 2009-2010, International Business Machines
+* Corporation and others. All Rights Reserved.
+*
+*******************************************************************************
+* file name: n2builder.cpp
+* encoding: US-ASCII
+* tab size: 8 (not used)
+* indentation:4
+*
+* created on: 2009nov25
+* created by: Markus W. Scherer
+*
+* Builds Normalizer2 data and writes a binary .nrm file.
+* For the file format see source/common/normalizer2impl.h.
+*/
+
+#include "unicode/utypes.h"
+#include "n2builder.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#if U_HAVE_STD_STRING
+#include <vector>
+#endif
+#include "unicode/errorcode.h"
+#include "unicode/localpointer.h"
+#include "unicode/putil.h"
+#include "unicode/udata.h"
+#include "unicode/uniset.h"
+#include "unicode/unistr.h"
+#include "unicode/ustring.h"
+#include "hash.h"
+#include "normalizer2impl.h"
+#include "toolutil.h"
+#include "unewdata.h"
+#include "utrie2.h"
+#include "uvectr32.h"
+
+#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
+
+#if !UCONFIG_NO_NORMALIZATION
+
+/* UDataInfo cf. udata.h */
+static UDataInfo dataInfo={
+ sizeof(UDataInfo),
+ 0,
+
+ U_IS_BIG_ENDIAN,
+ U_CHARSET_FAMILY,
+ U_SIZEOF_UCHAR,
+ 0,
+
+ { 0x4e, 0x72, 0x6d, 0x32 }, /* dataFormat="Nrm2" */
+ { 1, 0, 0, 0 }, /* formatVersion */
+ { 5, 2, 0, 0 } /* dataVersion (Unicode version) */
+};
+
+U_NAMESPACE_BEGIN
+
+class HangulIterator {
+public:
+ struct Range {
+ UChar32 start, limit;
+ uint16_t norm16;
+ };
+
+ HangulIterator() : rangeIndex(0) {}
+ const Range *nextRange() {
+ if(rangeIndex<LENGTHOF(ranges)) {
+ return ranges+rangeIndex++;
+ } else {
+ return NULL;
+ }
+ }
+ void reset() { rangeIndex=0; }
+private:
+ static const Range ranges[4];
+ int32_t rangeIndex;
+};
+
+const HangulIterator::Range HangulIterator::ranges[4]={
+ { Hangul::JAMO_L_BASE, Hangul::JAMO_L_BASE+Hangul::JAMO_L_COUNT, 1 },
+ { Hangul::JAMO_V_BASE, Hangul::JAMO_V_BASE+Hangul::JAMO_V_COUNT, Normalizer2Impl::JAMO_VT },
+ // JAMO_T_BASE+1: not U+11A7
+ { Hangul::JAMO_T_BASE+1, Hangul::JAMO_T_BASE+Hangul::JAMO_T_COUNT, Normalizer2Impl::JAMO_VT },
+ { Hangul::HANGUL_BASE, Hangul::HANGUL_BASE+Hangul::HANGUL_COUNT, 0 }, // will become minYesNo
+};
+
+struct CompositionPair {
+ CompositionPair(UChar32 t, UChar32 c) : trail(t), composite(c) {}
+ UChar32 trail, composite;
+};
+
+struct Norm {
+ enum MappingType { NONE, REMOVED, ROUND_TRIP, ONE_WAY };
+
+ UBool hasMapping() const { return mappingType>REMOVED; }
+
+ // Requires hasMapping() and well-formed mapping.
+ void setMappingCP() {
+ UChar32 c;
+ if(!mapping->isEmpty() && mapping->length()==U16_LENGTH(c=mapping->char32At(0))) {
+ mappingCP=c;
+ } else {
+ mappingCP=U_SENTINEL;
+ }
+ }
+
+ const CompositionPair *getCompositionPairs(int32_t &length) const {
+ if(compositions==NULL) {
+ length=0;
+ return NULL;
+ } else {
+ length=compositions->size()/2;
+ return reinterpret_cast<const CompositionPair *>(compositions->getBuffer());
+ }
+ }
+
+ UnicodeString *mapping;
+ UChar32 mappingCP; // >=0 if mapping to 1 code point
+ int32_t mappingPhase;
+ MappingType mappingType;
+
+ UVector32 *compositions; // (trail, composite) pairs
+ uint8_t cc;
+ UBool combinesBack;
+ UBool hasNoCompBoundaryAfter;
+
+ enum OffsetType {
+ OFFSET_NONE, OFFSET_MAYBE_YES,
+ OFFSET_YES_YES, OFFSET_YES_NO, OFFSET_NO_NO,
+ OFFSET_DELTA
+ };
+ enum { OFFSET_SHIFT=4, OFFSET_MASK=(1<<OFFSET_SHIFT)-1 };
+ int32_t offset;
+};
+
+class Normalizer2DBEnumerator {
+public:
+ Normalizer2DBEnumerator(Normalizer2DataBuilder &b) : builder(b) {}
+ virtual ~Normalizer2DBEnumerator() {}
+ virtual UBool rangeHandler(UChar32 start, UChar32 end, uint32_t value) = 0;
+ Normalizer2DBEnumerator *ptr() { return this; }
+protected:
+ Normalizer2DataBuilder &builder;
+};
+
+U_CDECL_BEGIN
+
+static UBool U_CALLCONV
+enumRangeHandler(const void *context, UChar32 start, UChar32 end, uint32_t value) {
+ return ((Normalizer2DBEnumerator *)context)->rangeHandler(start, end, value);
+}
+
+U_CDECL_END
+
+Normalizer2DataBuilder::Normalizer2DataBuilder(UErrorCode &errorCode) :
+ phase(0), overrideHandling(OVERRIDE_PREVIOUS), optimization(OPTIMIZE_NORMAL) {
+ memset(unicodeVersion, 0, sizeof(unicodeVersion));
+ normTrie=utrie2_open(0, 0, &errorCode);
+ normMem=utm_open("gennorm2 normalization structs", 10000, 0x110100, sizeof(Norm));
+ norms=allocNorm(); // unused Norm struct at index 0
+ memset(indexes, 0, sizeof(indexes));
+}
+
+Normalizer2DataBuilder::~Normalizer2DataBuilder() {
+ utrie2_close(normTrie);
+ int32_t normsLength=utm_countItems(normMem);
+ for(int32_t i=1; i<normsLength; ++i) {
+ delete norms[i].mapping;
+ delete norms[i].compositions;
+ }
+ utm_close(normMem);
+ utrie2_close(norm16Trie);
+}
+
+void
+Normalizer2DataBuilder::setUnicodeVersion(const char *v) {
+ u_versionFromString(unicodeVersion, v);
+}
+
+Norm *Normalizer2DataBuilder::allocNorm() {
+ Norm *p=(Norm *)utm_alloc(normMem);
+ norms=(Norm *)utm_getStart(normMem); // in case it got reallocated
+ return p;
+}
+
+/* get an existing Norm unit */
+Norm *Normalizer2DataBuilder::getNorm(UChar32 c) {
+ uint32_t i=utrie2_get32(normTrie, c);
+ if(i==0) {
+ return NULL;
+ }
+ return norms+i;
+}
+
+const Norm &Normalizer2DataBuilder::getNormRef(UChar32 c) const {
+ return norms[utrie2_get32(normTrie, c)];
+}
+
+/*
+ * get or create a Norm unit;
+ * get or create the intermediate trie entries for it as well
+ */
+Norm *Normalizer2DataBuilder::createNorm(UChar32 c) {
+ uint32_t i=utrie2_get32(normTrie, c);
+ if(i!=0) {
+ return norms+i;
+ } else {
+ /* allocate Norm */
+ Norm *p=allocNorm();
+ IcuToolErrorCode errorCode("gennorm2/createNorm()");
+ utrie2_set32(normTrie, c, (uint32_t)(p-norms), errorCode);
+ return p;
+ }
+}
+
+Norm *Normalizer2DataBuilder::checkNormForMapping(Norm *p, UChar32 c) {
+ if(p!=NULL) {
+ if(p->mappingType!=Norm::NONE) {
+ if( overrideHandling==OVERRIDE_NONE ||
+ (overrideHandling==OVERRIDE_PREVIOUS && p->mappingPhase==phase)
+ ) {
+ fprintf(stderr,
+ "error in gennorm2 phase %d: "
+ "not permitted to override mapping for U+%04lX from phase %d\n",
+ (int)phase, (long)c, (int)p->mappingPhase);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ delete p->mapping;
+ p->mapping=NULL;
+ }
+ p->mappingPhase=phase;
+ }
+ return p;
+}
+
+void Normalizer2DataBuilder::setOverrideHandling(OverrideHandling oh) {
+ overrideHandling=oh;
+ ++phase;
+}
+
+void Normalizer2DataBuilder::setCC(UChar32 c, uint8_t cc) {
+ createNorm(c)->cc=cc;
+}
+
+uint8_t Normalizer2DataBuilder::getCC(UChar32 c) const {
+ return getNormRef(c).cc;
+}
+
+static UBool isWellFormed(const UnicodeString &s) {
+ UErrorCode errorCode=U_ZERO_ERROR;
+ u_strToUTF8(NULL, 0, NULL, s.getBuffer(), s.length(), &errorCode);
+ return U_SUCCESS(errorCode) || errorCode==U_BUFFER_OVERFLOW_ERROR;
+}
+
+void Normalizer2DataBuilder::setOneWayMapping(UChar32 c, const UnicodeString &m) {
+ if(!isWellFormed(m)) {
+ fprintf(stderr,
+ "error in gennorm2 phase %d: "
+ "illegal one-way mapping from U+%04lX to malformed string\n",
+ (int)phase, (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ Norm *p=checkNormForMapping(createNorm(c), c);
+ p->mapping=new UnicodeString(m);
+ p->mappingType=Norm::ONE_WAY;
+ p->setMappingCP();
+}
+
+void Normalizer2DataBuilder::setRoundTripMapping(UChar32 c, const UnicodeString &m) {
+ if(U_IS_SURROGATE(c)) {
+ fprintf(stderr,
+ "error in gennorm2 phase %d: "
+ "illegal round-trip mapping from surrogate code point U+%04lX\n",
+ (int)phase, (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ if(!isWellFormed(m)) {
+ fprintf(stderr,
+ "error in gennorm2 phase %d: "
+ "illegal round-trip mapping from U+%04lX to malformed string\n",
+ (int)phase, (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ int32_t numCP=u_countChar32(m.getBuffer(), m.length());
+ if(numCP!=2) {
+ fprintf(stderr,
+ "error in gennorm2 phase %d: "
+ "illegal round-trip mapping from U+%04lX to %d!=2 code points\n",
+ (int)phase, (long)c, (int)numCP);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ Norm *p=checkNormForMapping(createNorm(c), c);
+ p->mapping=new UnicodeString(m);
+ p->mappingType=Norm::ROUND_TRIP;
+ p->mappingCP=U_SENTINEL;
+}
+
+void Normalizer2DataBuilder::removeMapping(UChar32 c) {
+ Norm *p=checkNormForMapping(getNorm(c), c);
+ if(p!=NULL) {
+ p->mappingType=Norm::REMOVED;
+ }
+}
+
+class CompositionBuilder : public Normalizer2DBEnumerator {
+public:
+ CompositionBuilder(Normalizer2DataBuilder &b) : Normalizer2DBEnumerator(b) {}
+ virtual UBool rangeHandler(UChar32 start, UChar32 end, uint32_t value) {
+ builder.addComposition(start, end, value);
+ return TRUE;
+ }
+};
+
+void
+Normalizer2DataBuilder::addComposition(UChar32 start, UChar32 end, uint32_t value) {
+ if(norms[value].mappingType==Norm::ROUND_TRIP) {
+ if(start!=end) {
+ fprintf(stderr,
+ "gennorm2 error: same round-trip mapping for "
+ "more than 1 code point U+%04lX..U+%04lX\n",
+ (long)start, (long)end);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ if(norms[value].cc!=0) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX has a round-trip mapping and ccc!=0, "
+ "not possible in Unicode normalization\n",
+ (long)start);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ // setRoundTripMapping() ensured that there are exactly two code points.
+ const UnicodeString &m=*norms[value].mapping;
+ UChar32 lead=m.char32At(0);
+ UChar32 trail=m.char32At(m.length()-1);
+ if(getCC(lead)!=0) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX's round-trip mapping's starter U+%04lX has ccc!=0, "
+ "not possible in Unicode normalization\n",
+ (long)start, (long)lead);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ // Flag for trailing character.
+ createNorm(trail)->combinesBack=TRUE;
+ // Insert (trail, composite) pair into compositions list for the lead character.
+ IcuToolErrorCode errorCode("gennorm2/addComposition()");
+ Norm *leadNorm=createNorm(lead);
+ UVector32 *compositions=leadNorm->compositions;
+ int32_t i;
+ if(compositions==NULL) {
+ compositions=leadNorm->compositions=new UVector32(errorCode);
+ i=0; // "insert" the first pair at index 0
+ } else {
+ // Insertion sort, and check for duplicate trail characters.
+ int32_t length;
+ const CompositionPair *pairs=leadNorm->getCompositionPairs(length);
+ for(i=0; i<length; ++i) {
+ if(trail==pairs[i].trail) {
+ fprintf(stderr,
+ "gennorm2 error: same round-trip mapping for "
+ "more than 1 code point (e.g., U+%04lX) to U+%04lX + U+%04lX\n",
+ (long)start, (long)lead, (long)trail);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ if(trail<pairs[i].trail) {
+ break;
+ }
+ }
+ }
+ compositions->insertElementAt(trail, 2*i, errorCode);
+ compositions->insertElementAt(start, 2*i+1, errorCode);
+ }
+}
+
+UBool Normalizer2DataBuilder::combinesWithCCBetween(const Norm &norm,
+ uint8_t lowCC, uint8_t highCC) const {
+ if((highCC-lowCC)>=2) {
+ int32_t length;
+ const CompositionPair *pairs=norm.getCompositionPairs(length);
+ for(int32_t i=0; i<length; ++i) {
+ uint8_t trailCC=getCC(pairs[i].trail);
+ if(lowCC<trailCC && trailCC<highCC) {
+ return TRUE;
+ }
+ }
+ }
+ return FALSE;
+}
+
+UChar32 Normalizer2DataBuilder::combine(const Norm &norm, UChar32 trail) const {
+ int32_t length;
+ const CompositionPair *pairs=norm.getCompositionPairs(length);
+ for(int32_t i=0; i<length; ++i) {
+ if(trail==pairs[i].trail) {
+ return pairs[i].composite;
+ }
+ if(trail<pairs[i].trail) {
+ break;
+ }
+ }
+ return U_SENTINEL;
+}
+
+class Decomposer : public Normalizer2DBEnumerator {
+public:
+ Decomposer(Normalizer2DataBuilder &b) : Normalizer2DBEnumerator(b), didDecompose(FALSE) {}
+ virtual UBool rangeHandler(UChar32 start, UChar32 end, uint32_t value) {
+ didDecompose|=builder.decompose(start, end, value);
+ return TRUE;
+ }
+ UBool didDecompose;
+};
+
+UBool
+Normalizer2DataBuilder::decompose(UChar32 start, UChar32 end, uint32_t value) {
+ if(norms[value].hasMapping()) {
+ const UnicodeString &m=*norms[value].mapping;
+ UnicodeString *decomposed=NULL;
+ const UChar *s=m.getBuffer();
+ int32_t length=m.length();
+ int32_t prev, i=0;
+ UChar32 c;
+ while(i<length) {
+ prev=i;
+ U16_NEXT(s, i, length, c);
+ if(start<=c && c<=end) {
+ fprintf(stderr,
+ "gennorm2 error: U+%04lX maps to itself directly or indirectly\n",
+ (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ const Norm &cNorm=getNormRef(c);
+ if(cNorm.hasMapping()) {
+ if(norms[value].mappingType==Norm::ROUND_TRIP) {
+ if(prev==0) {
+ if(cNorm.mappingType!=Norm::ROUND_TRIP) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX's round-trip mapping's starter "
+ "U+%04lX one-way-decomposes, "
+ "not possible in Unicode normalization\n",
+ (long)start, (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ uint8_t myTrailCC=getCC(m.char32At(i));
+ UChar32 cTrailChar=cNorm.mapping->char32At(cNorm.mapping->length()-1);
+ uint8_t cTrailCC=getCC(cTrailChar);
+ if(cTrailCC>myTrailCC) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX's round-trip mapping's starter "
+ "U+%04lX decomposes and the "
+ "inner/earlier tccc=%hu > outer/following tccc=%hu, "
+ "not possible in Unicode normalization\n",
+ (long)start, (long)c,
+ (short)cTrailCC, (short)myTrailCC);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ } else {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX's round-trip mapping's non-starter "
+ "U+%04lX decomposes, "
+ "not possible in Unicode normalization\n",
+ (long)start, (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ }
+ if(decomposed==NULL) {
+ decomposed=new UnicodeString(m, 0, prev);
+ }
+ decomposed->append(*cNorm.mapping);
+ } else if(Hangul::isHangul(c)) {
+ UChar buffer[3];
+ int32_t hangulLength=Hangul::decompose(c, buffer);
+ if(norms[value].mappingType==Norm::ROUND_TRIP && prev!=0) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX's round-trip mapping's non-starter "
+ "U+%04lX decomposes, "
+ "not possible in Unicode normalization\n",
+ (long)start, (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ if(decomposed==NULL) {
+ decomposed=new UnicodeString(m, 0, prev);
+ }
+ decomposed->append(buffer, hangulLength);
+ } else if(decomposed!=NULL) {
+ decomposed->append(m, prev, i-prev);
+ }
+ }
+ if(decomposed!=NULL) {
+ delete norms[value].mapping;
+ norms[value].mapping=decomposed;
+ // Not norms[value].setMappingCP(); because the original mapping
+ // is most likely to be encodable as a delta.
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+class BuilderReorderingBuffer {
+public:
+ BuilderReorderingBuffer() : fLength(0), fLastStarterIndex(-1), fDidReorder(FALSE) {}
+ void reset() {
+ fLength=0;
+ fLastStarterIndex=-1;
+ fDidReorder=FALSE;
+ }
+ int32_t length() const { return fLength; }
+ UBool isEmpty() const { return fLength==0; }
+ int32_t lastStarterIndex() const { return fLastStarterIndex; }
+ UChar32 charAt(int32_t i) const { return fArray[i]>>8; }
+ uint8_t ccAt(int32_t i) const { return (uint8_t)fArray[i]; }
+ UBool didReorder() const { return fDidReorder; }
+ void append(UChar32 c, uint8_t cc) {
+ if(cc==0 || fLength==0 || ccAt(fLength-1)<=cc) {
+ if(cc==0) {
+ fLastStarterIndex=fLength;
+ }
+ fArray[fLength++]=(c<<8)|cc;
+ return;
+ }
+ // Let this character bubble back to its canonical order.
+ int32_t i=fLength-1;
+ while(i>fLastStarterIndex && ccAt(i)>cc) {
+ --i;
+ }
+ ++i; // after the last starter or prevCC<=cc
+ // Move this and the following characters forward one to make space.
+ for(int32_t j=fLength; i<j; --j) {
+ fArray[j]=fArray[j-1];
+ }
+ fArray[i]=(c<<8)|cc;
+ ++fLength;
+ fDidReorder=TRUE;
+ }
+ void toString(UnicodeString &dest) {
+ dest.remove();
+ for(int32_t i=0; i<fLength; ++i) {
+ dest.append(charAt(i));
+ }
+ }
+ void setComposite(UChar32 composite, int32_t combMarkIndex) {
+ fArray[fLastStarterIndex]=composite<<8;
+ // Remove the combining mark that contributed to the composite.
+ --fLength;
+ while(combMarkIndex<fLength) {
+ fArray[combMarkIndex]=fArray[combMarkIndex+1];
+ ++combMarkIndex;
+ }
+ }
+private:
+ int32_t fArray[Normalizer2Impl::MAPPING_LENGTH_MASK];
+ int32_t fLength;
+ int32_t fLastStarterIndex;
+ UBool fDidReorder;
+};
+
+void
+Normalizer2DataBuilder::reorder(Norm *p, BuilderReorderingBuffer &buffer) {
+ UnicodeString &m=*p->mapping;
+ int32_t length=m.length();
+ if(length>Normalizer2Impl::MAPPING_LENGTH_MASK) {
+ return; // writeMapping() will complain about it and print the code point.
+ }
+ const UChar *s=m.getBuffer();
+ int32_t i=0;
+ UChar32 c;
+ while(i<length) {
+ U16_NEXT(s, i, length, c);
+ buffer.append(c, getCC(c));
+ }
+ if(buffer.didReorder()) {
+ buffer.toString(m);
+ }
+}
+
+UBool Normalizer2DataBuilder::hasNoCompBoundaryAfter(BuilderReorderingBuffer &buffer) {
+ if(buffer.isEmpty()) {
+ return TRUE; // maps-to-empty string is no boundary of any kind
+ }
+ int32_t lastStarterIndex=buffer.lastStarterIndex();
+ if(lastStarterIndex<0) {
+ return TRUE; // no starter
+ }
+ UChar32 starter=buffer.charAt(lastStarterIndex);
+ if( Hangul::isJamoL(starter) ||
+ (Hangul::isJamoV(starter) &&
+ 0<lastStarterIndex && Hangul::isJamoL(buffer.charAt(lastStarterIndex-1)))
+ ) {
+ // A Jamo leading consonant or an LV pair combines-forward if it is at the end,
+ // otherwise it is blocked.
+ return lastStarterIndex==buffer.length()-1;
+ }
+ // no Hangul in fully decomposed mapping
+ const Norm *starterNorm=&getNormRef(starter);
+ if(starterNorm->compositions==NULL) {
+ return FALSE; // the last starter does not combine forward
+ }
+ // Compose as far as possible, and see if further compositions are possible.
+ uint8_t prevCC=0;
+ for(int32_t combMarkIndex=lastStarterIndex+1; combMarkIndex<buffer.length();) {
+ uint8_t cc=buffer.ccAt(combMarkIndex); // !=0 because after last starter
+ if(combinesWithCCBetween(*starterNorm, prevCC, cc)) {
+ return TRUE;
+ }
+ if( prevCC<cc &&
+ (starter=combine(*starterNorm, buffer.charAt(combMarkIndex)))>=0
+ ) {
+ buffer.setComposite(starter, combMarkIndex);
+ starterNorm=&getNormRef(starter);
+ if(starterNorm->compositions==NULL) {
+ return FALSE; // the composite does not combine further
+ }
+ } else {
+ prevCC=cc;
+ ++combMarkIndex;
+ }
+ }
+ // TRUE if the final, forward-combining starter is at the end.
+ return prevCC==0;
+}
+
+// Requires p->hasMapping().
+void Normalizer2DataBuilder::writeMapping(UChar32 c, const Norm *p, UnicodeString &dataString) {
+ UnicodeString &m=*p->mapping;
+ int32_t length=m.length();
+ if(length>Normalizer2Impl::MAPPING_LENGTH_MASK) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "mapping for U+%04lX longer than maximum of %d\n",
+ (long)c, Normalizer2Impl::MAPPING_LENGTH_MASK);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ int32_t leadCC, trailCC;
+ if(length==0) {
+ leadCC=trailCC=0;
+ } else {
+ leadCC=getCC(m.char32At(0));
+ trailCC=getCC(m.char32At(length-1));
+ }
+ if(c<Normalizer2Impl::MIN_CCC_LCCC_CP && (p->cc!=0 || leadCC!=0)) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX below U+0300 has ccc!=0 or lccc!=0, not supported by ICU\n",
+ (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ int32_t firstUnit=length|(trailCC<<8);
+ int32_t secondUnit=p->cc|(leadCC<<8);
+ if(secondUnit!=0) {
+ firstUnit|=Normalizer2Impl::MAPPING_HAS_CCC_LCCC_WORD;
+ }
+ if(p->compositions!=NULL) {
+ firstUnit|=Normalizer2Impl::MAPPING_PLUS_COMPOSITION_LIST;
+ }
+ if(p->hasNoCompBoundaryAfter) {
+ firstUnit|=Normalizer2Impl::MAPPING_NO_COMP_BOUNDARY_AFTER;
+ }
+ dataString.append((UChar)firstUnit);
+ if(secondUnit!=0) {
+ dataString.append((UChar)secondUnit);
+ }
+ dataString.append(m);
+}
+
+// Requires p->compositions!=NULL.
+void Normalizer2DataBuilder::writeCompositions(UChar32 c, const Norm *p, UnicodeString &dataString) {
+ if(p->cc!=0) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX combines-forward and has ccc!=0, not possible in Unicode normalization\n",
+ (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ int32_t length;
+ const CompositionPair *pairs=p->getCompositionPairs(length);
+ for(int32_t i=0; i<length; ++i) {
+ const CompositionPair &pair=pairs[i];
+ // 22 bits for the composite character and whether it combines forward.
+ UChar32 compositeAndFwd=pair.composite<<1;
+ if(getNormRef(pair.composite).compositions!=NULL) {
+ compositeAndFwd|=1; // The composite character also combines-forward.
+ }
+ // Encode most pairs in two units and some in three.
+ int32_t firstUnit, secondUnit, thirdUnit;
+ if(pair.trail<Normalizer2Impl::COMP_1_TRAIL_LIMIT) {
+ if(compositeAndFwd<=0xffff) {
+ firstUnit=pair.trail<<1;
+ secondUnit=compositeAndFwd;
+ thirdUnit=-1;
+ } else {
+ firstUnit=(pair.trail<<1)|Normalizer2Impl::COMP_1_TRIPLE;
+ secondUnit=compositeAndFwd>>16;
+ thirdUnit=compositeAndFwd;
+ }
+ } else {
+ firstUnit=(Normalizer2Impl::COMP_1_TRAIL_LIMIT+
+ (pair.trail>>Normalizer2Impl::COMP_1_TRAIL_SHIFT))|
+ Normalizer2Impl::COMP_1_TRIPLE;
+ secondUnit=(pair.trail<<Normalizer2Impl::COMP_2_TRAIL_SHIFT)|
+ (compositeAndFwd>>16);
+ thirdUnit=compositeAndFwd;
+ }
+ // Set the high bit of the first unit if this is the last composition pair.
+ if(i==(length-1)) {
+ firstUnit|=Normalizer2Impl::COMP_1_LAST_TUPLE;
+ }
+ dataString.append((UChar)firstUnit).append((UChar)secondUnit);
+ if(thirdUnit>=0) {
+ dataString.append((UChar)thirdUnit);
+ }
+ }
+}
+
+class ExtraDataWriter : public Normalizer2DBEnumerator {
+public:
+ ExtraDataWriter(Normalizer2DataBuilder &b) :
+ Normalizer2DBEnumerator(b),
+ yesYesCompositions(1000, (UChar32)0xffff, 2), // 0=inert, 1=Jamo L, 2=start of compositions
+ yesNoData(1000, (UChar32)0, 1) {} // 0=Hangul, 1=start of normal data
+ virtual UBool rangeHandler(UChar32 start, UChar32 end, uint32_t value) {
+ if(value!=0) {
+ if(start!=end) {
+ fprintf(stderr,
+ "gennorm2 error: unexpected shared data for "
+ "multiple code points U+%04lX..U+%04lX\n",
+ (long)start, (long)end);
+ exit(U_INTERNAL_PROGRAM_ERROR);
+ }
+ builder.writeExtraData(start, value, *this);
+ }
+ return TRUE;
+ }
+ UnicodeString maybeYesCompositions;
+ UnicodeString yesYesCompositions;
+ UnicodeString yesNoData;
+ UnicodeString noNoMappings;
+ Hashtable previousNoNoMappings; // If constructed in runtime code, pass in UErrorCode.
+};
+
+void Normalizer2DataBuilder::writeExtraData(UChar32 c, uint32_t value, ExtraDataWriter &writer) {
+ Norm *p=norms+value;
+ if(p->combinesBack) {
+ if(p->hasMapping()) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX combines-back and decomposes, not possible in Unicode normalization\n",
+ (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ if(p->compositions!=NULL) {
+ p->offset=
+ (writer.maybeYesCompositions.length()<<Norm::OFFSET_SHIFT)|
+ Norm::OFFSET_MAYBE_YES;
+ writeCompositions(c, p, writer.maybeYesCompositions);
+ }
+ } else if(!p->hasMapping()) {
+ if(p->compositions!=NULL) {
+ p->offset=
+ (writer.yesYesCompositions.length()<<Norm::OFFSET_SHIFT)|
+ Norm::OFFSET_YES_YES;
+ writeCompositions(c, p, writer.yesYesCompositions);
+ }
+ } else if(p->mappingType==Norm::ROUND_TRIP) {
+ p->offset=
+ (writer.yesNoData.length()<<Norm::OFFSET_SHIFT)|
+ Norm::OFFSET_YES_NO;
+ writeMapping(c, p, writer.yesNoData);
+ if(p->compositions!=NULL) {
+ writeCompositions(c, p, writer.yesNoData);
+ }
+ } else /* one-way */ {
+ if(p->compositions!=NULL) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "U+%04lX combines-forward and has a one-way mapping, "
+ "not possible in Unicode normalization\n",
+ (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ if(p->cc==0 && optimization!=OPTIMIZE_FAST) {
+ // Try a compact, algorithmic encoding.
+ // Only for ccc=0, because we can't store additional information.
+ if(p->mappingCP>=0) {
+ int32_t delta=p->mappingCP-c;
+ if(-Normalizer2Impl::MAX_DELTA<=delta && delta<=Normalizer2Impl::MAX_DELTA) {
+ p->offset=(delta<<Norm::OFFSET_SHIFT)|Norm::OFFSET_DELTA;
+ }
+ }
+ }
+ if(p->offset==0) {
+ int32_t oldNoNoLength=writer.noNoMappings.length();
+ writeMapping(c, p, writer.noNoMappings);
+ UnicodeString newMapping=writer.noNoMappings.tempSubString(oldNoNoLength);
+ int32_t previousOffset=writer.previousNoNoMappings.geti(newMapping);
+ if(previousOffset!=0) {
+ // Duplicate, remove the new units and point to the old ones.
+ writer.noNoMappings.truncate(oldNoNoLength);
+ p->offset=
+ ((previousOffset-1)<<Norm::OFFSET_SHIFT)|
+ Norm::OFFSET_NO_NO;
+ } else {
+ // Enter this new mapping into the hashtable, avoiding value 0 which is "not found".
+ IcuToolErrorCode errorCode("gennorm2/writeExtraData()/Hashtable.puti()");
+ writer.previousNoNoMappings.puti(newMapping, oldNoNoLength+1, errorCode);
+ p->offset=
+ (oldNoNoLength<<Norm::OFFSET_SHIFT)|
+ Norm::OFFSET_NO_NO;
+ }
+ }
+ }
+}
+
+class Norm16Writer : public Normalizer2DBEnumerator {
+public:
+ Norm16Writer(Normalizer2DataBuilder &b) : Normalizer2DBEnumerator(b) {}
+ virtual UBool rangeHandler(UChar32 start, UChar32 end, uint32_t value) {
+ builder.writeNorm16(start, end, value);
+ return TRUE;
+ }
+};
+
+void Normalizer2DataBuilder::writeNorm16(UChar32 start, UChar32 end, uint32_t value) {
+ if(value!=0) {
+ const Norm *p=norms+value;
+ int32_t offset=p->offset>>Norm::OFFSET_SHIFT;
+ int32_t norm16=0;
+ UBool isDecompNo=FALSE;
+ UBool isCompNoMaybe=FALSE;
+ switch(p->offset&Norm::OFFSET_MASK) {
+ case Norm::OFFSET_NONE:
+ // No mapping, no compositions list.
+ if(p->combinesBack) {
+ norm16=Normalizer2Impl::MIN_NORMAL_MAYBE_YES+p->cc;
+ isDecompNo=(UBool)(p->cc!=0);
+ isCompNoMaybe=TRUE;
+ } else if(p->cc!=0) {
+ norm16=Normalizer2Impl::MIN_YES_YES_WITH_CC-1+p->cc;
+ isDecompNo=isCompNoMaybe=TRUE;
+ }
+ break;
+ case Norm::OFFSET_MAYBE_YES:
+ norm16=indexes[Normalizer2Impl::IX_MIN_MAYBE_YES]+offset;
+ isCompNoMaybe=TRUE;
+ break;
+ case Norm::OFFSET_YES_YES:
+ norm16=offset;
+ break;
+ case Norm::OFFSET_YES_NO:
+ norm16=indexes[Normalizer2Impl::IX_MIN_YES_NO]+offset;
+ isDecompNo=TRUE;
+ break;
+ case Norm::OFFSET_NO_NO:
+ norm16=indexes[Normalizer2Impl::IX_MIN_NO_NO]+offset;
+ isDecompNo=isCompNoMaybe=TRUE;
+ break;
+ case Norm::OFFSET_DELTA:
+ norm16=getCenterNoNoDelta()+offset;
+ isDecompNo=isCompNoMaybe=TRUE;
+ break;
+ default: // Should not occur.
+ exit(U_INTERNAL_PROGRAM_ERROR);
+ }
+ IcuToolErrorCode errorCode("gennorm2/writeNorm16()");
+ utrie2_setRange32(norm16Trie, start, end, (uint32_t)norm16, TRUE, errorCode);
+ if(isDecompNo && start<indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]) {
+ indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]=start;
+ }
+ if(isCompNoMaybe && start<indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]) {
+ indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]=start;
+ }
+ }
+}
+
+void Normalizer2DataBuilder::setHangulData() {
+ HangulIterator hi;
+ const HangulIterator::Range *range;
+ // Check that none of the Hangul/Jamo code points have data.
+ while((range=hi.nextRange())!=NULL) {
+ for(UChar32 c=range->start; c<range->limit; ++c) {
+ if(utrie2_get32(norm16Trie, c)!=0) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "illegal mapping/composition/ccc data for Hangul or Jamo U+%04lX\n",
+ (long)c);
+ exit(U_INVALID_FORMAT_ERROR);
+ }
+ }
+ }
+ // Set data for algorithmic runtime handling.
+ IcuToolErrorCode errorCode("gennorm2/setHangulData()");
+ hi.reset();
+ while((range=hi.nextRange())!=NULL) {
+ uint16_t norm16=range->norm16;
+ if(norm16==0) {
+ norm16=(uint16_t)indexes[Normalizer2Impl::IX_MIN_YES_NO]; // Hangul LV/LVT encoded as minYesNo
+ if(range->start<indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]) {
+ indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]=range->start;
+ }
+ } else {
+ if(range->start<indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]) { // Jamo V/T are maybeYes
+ indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]=range->start;
+ }
+ }
+ utrie2_setRange32(norm16Trie, range->start, range->limit-1, norm16, TRUE, errorCode);
+ errorCode.assertSuccess();
+ }
+}
+
+U_CDECL_BEGIN
+
+static UBool U_CALLCONV
+enumRangeMaxValue(const void *context, UChar32 /*start*/, UChar32 /*end*/, uint32_t value) {
+ uint32_t *pMaxValue=(uint32_t *)context;
+ if(value>*pMaxValue) {
+ *pMaxValue=value;
+ }
+ return TRUE;
+}
+
+U_CDECL_END
+
+void Normalizer2DataBuilder::processData() {
+ IcuToolErrorCode errorCode("gennorm2/processData()");
+ norm16Trie=utrie2_open(0, 0, errorCode);
+ errorCode.assertSuccess();
+
+ utrie2_enum(normTrie, NULL, enumRangeHandler, CompositionBuilder(*this).ptr());
+
+ Decomposer decomposer(*this);
+ do {
+ decomposer.didDecompose=FALSE;
+ utrie2_enum(normTrie, NULL, enumRangeHandler, &decomposer);
+ } while(decomposer.didDecompose);
+
+ BuilderReorderingBuffer buffer;
+ int32_t normsLength=utm_countItems(normMem);
+ for(int32_t i=1; i<normsLength; ++i) {
+ if(norms[i].hasMapping()) {
+ buffer.reset();
+ reorder(norms+i, buffer);
+ norms[i].hasNoCompBoundaryAfter=hasNoCompBoundaryAfter(buffer);
+ }
+ }
+
+ indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]=0x110000;
+ indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]=0x110000;
+
+ ExtraDataWriter extraDataWriter(*this);
+ utrie2_enum(normTrie, NULL, enumRangeHandler, &extraDataWriter);
+
+ extraData=extraDataWriter.maybeYesCompositions;
+ extraData.append(extraDataWriter.yesYesCompositions).
+ append(extraDataWriter.yesNoData).
+ append(extraDataWriter.noNoMappings);
+ // Pad to even length for 4-byte alignment of following data.
+ if(extraData.length()&1) {
+ extraData.append((UChar)0);
+ }
+
+ indexes[Normalizer2Impl::IX_MIN_YES_NO]=
+ extraDataWriter.yesYesCompositions.length();
+ indexes[Normalizer2Impl::IX_MIN_NO_NO]=
+ indexes[Normalizer2Impl::IX_MIN_YES_NO]+
+ extraDataWriter.yesNoData.length();
+ indexes[Normalizer2Impl::IX_LIMIT_NO_NO]=
+ indexes[Normalizer2Impl::IX_MIN_NO_NO]+
+ extraDataWriter.noNoMappings.length();
+ indexes[Normalizer2Impl::IX_MIN_MAYBE_YES]=
+ Normalizer2Impl::MIN_NORMAL_MAYBE_YES-
+ extraDataWriter.maybeYesCompositions.length();
+
+ int32_t minNoNoDelta=getCenterNoNoDelta()-Normalizer2Impl::MAX_DELTA;
+ if(indexes[Normalizer2Impl::IX_LIMIT_NO_NO]>minNoNoDelta) {
+ fprintf(stderr,
+ "gennorm2 error: "
+ "data structure overflow, too much mapping composition data\n");
+ exit(U_BUFFER_OVERFLOW_ERROR);
+ }
+
+ utrie2_enum(normTrie, NULL, enumRangeHandler, Norm16Writer(*this).ptr());
+
+ setHangulData();
+
+ // Look for the "worst" norm16 value of any supplementary code point
+ // corresponding to a lead surrogate, and set it as that surrogate's value.
+ // Enables quick check inner loops to look at only code units.
+ //
+ // We could be more sophisticated:
+ // We could collect a bit set for whether there are values in the different
+ // norm16 ranges (yesNo, maybeYes, yesYesWithCC etc.)
+ // and select the best value that only breaks the composition and/or decomposition
+ // inner loops if necessary.
+ // However, that seems like overkill for an optimization for supplementary characters.
+ for(UChar lead=0xd800; lead<0xdc00; ++lead) {
+ uint32_t maxValue=utrie2_get32(norm16Trie, lead);
+ utrie2_enumForLeadSurrogate(norm16Trie, lead, NULL, enumRangeMaxValue, &maxValue);
+ if( maxValue>=(uint32_t)indexes[Normalizer2Impl::IX_LIMIT_NO_NO] &&
+ maxValue>(uint32_t)indexes[Normalizer2Impl::IX_MIN_NO_NO]
+ ) {
+ // Set noNo ("worst" value) if it got into "less-bad" maybeYes or ccc!=0.
+ // Otherwise it might end up at something like JAMO_VT which stays in
+ // the inner decomposition quick check loop.
+ maxValue=(uint32_t)indexes[Normalizer2Impl::IX_LIMIT_NO_NO]-1;
+ }
+ utrie2_set32ForLeadSurrogateCodeUnit(norm16Trie, lead, maxValue, errorCode);
+ }
+
+ // Adjust supplementary minimum code points to break quick check loops at their lead surrogates.
+ // For an empty data file, minCP=0x110000 turns into 0xdc00 (first trail surrogate)
+ // which is harmless.
+ // As a result, the minimum code points are always BMP code points.
+ int32_t minCP=indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP];
+ if(minCP>=0x10000) {
+ indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]=U16_LEAD(minCP);
+ }
+ minCP=indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP];
+ if(minCP>=0x10000) {
+ indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]=U16_LEAD(minCP);
+ }
+}
+
+void Normalizer2DataBuilder::writeBinaryFile(const char *filename) {
+ processData();
+
+ IcuToolErrorCode errorCode("gennorm2/writeBinaryFile()");
+ utrie2_freeze(norm16Trie, UTRIE2_16_VALUE_BITS, errorCode);
+ int32_t norm16TrieLength=utrie2_serialize(norm16Trie, NULL, 0, errorCode);
+ if(errorCode.get()!=U_BUFFER_OVERFLOW_ERROR) {
+ fprintf(stderr, "gennorm2 error: unable to freeze/serialize the normalization trie - %s\n",
+ errorCode.errorName());
+ exit(errorCode.reset());
+ }
+ errorCode.reset();
+ LocalArray<uint8_t> norm16TrieBytes(new uint8_t[norm16TrieLength]);
+ utrie2_serialize(norm16Trie, norm16TrieBytes.getAlias(), norm16TrieLength, errorCode);
+ errorCode.assertSuccess();
+
+ int32_t offset=(int32_t)sizeof(indexes);
+ indexes[Normalizer2Impl::IX_NORM_TRIE_OFFSET]=offset;
+ offset+=norm16TrieLength;
+ indexes[Normalizer2Impl::IX_EXTRA_DATA_OFFSET]=offset;
+ int32_t totalSize=offset+=extraData.length()*2;
+ for(int32_t i=Normalizer2Impl::IX_RESERVED2_OFFSET; i<=Normalizer2Impl::IX_TOTAL_SIZE; ++i) {
+ indexes[i]=totalSize;
+ }
+
+ if(beVerbose) {
+ printf("size of normalization trie: %5ld bytes\n", (long)norm16TrieLength);
+ printf("size of 16-bit extra data: %5ld uint16_t\n", (long)extraData.length());
+ printf("size of binary data file contents: %5ld bytes\n", (long)totalSize);
+ printf("minDecompNoCodePoint: U+%04lX\n", (long)indexes[Normalizer2Impl::IX_MIN_DECOMP_NO_CP]);
+ printf("minCompNoMaybeCodePoint: U+%04lX\n", (long)indexes[Normalizer2Impl::IX_MIN_COMP_NO_MAYBE_CP]);
+ printf("minYesNo: 0x%04x\n", (int)indexes[Normalizer2Impl::IX_MIN_YES_NO]);
+ printf("minNoNo: 0x%04x\n", (int)indexes[Normalizer2Impl::IX_MIN_NO_NO]);
+ printf("limitNoNo: 0x%04x\n", (int)indexes[Normalizer2Impl::IX_LIMIT_NO_NO]);
+ printf("minMaybeYes: 0x%04x\n", (int)indexes[Normalizer2Impl::IX_MIN_MAYBE_YES]);
+ }
+
+ memcpy(dataInfo.dataVersion, unicodeVersion, 4);
+ UNewDataMemory *pData=
+ udata_create(NULL, NULL, filename, &dataInfo,
+ haveCopyright ? U_COPYRIGHT_STRING : NULL, errorCode);
+ if(errorCode.isFailure()) {
+ fprintf(stderr, "gennorm2 error: unable to create the output file %s - %s\n",
+ filename, errorCode.errorName());
+ exit(errorCode.reset());
+ }
+ udata_writeBlock(pData, indexes, sizeof(indexes));
+ udata_writeBlock(pData, norm16TrieBytes.getAlias(), norm16TrieLength);
+ udata_writeUString(pData, extraData.getBuffer(), extraData.length());
+
+ int32_t writtenSize=udata_finish(pData, errorCode);
+ if(errorCode.isFailure()) {
+ fprintf(stderr, "gennorm2: error %s writing the output file\n", errorCode.errorName());
+ exit(errorCode.reset());
+ }
+ if(writtenSize!=totalSize) {
+ fprintf(stderr, "gennorm2 error: written size %ld != calculated size %ld\n",
+ (long)writtenSize, (long)totalSize);
+ exit(U_INTERNAL_PROGRAM_ERROR);
+ }
+}
+
+U_NAMESPACE_END
+
+#endif /* #if !UCONFIG_NO_NORMALIZATION */
+
+/*
+ * Hey, Emacs, please set the following:
+ *
+ * Local Variables:
+ * indent-tabs-mode: nil
+ * End:
+ */
projects / apple / icu.git / blobdiff