| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 1999-2012, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: namespropsbuilder.cpp (was gennames/gennames.c) |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 1999sep30 |
| * created by: Markus W. Scherer |
| * |
| * This builder reads Unicode character names and aliases, |
| * tokenizes and compresses them, and builds |
| * compact binary tables for random-access lookup |
| * in a u_charName() API function. |
| * |
| * unames.icu file format (after UDataInfo header etc. - see udata.c) |
| * (all data is static const) |
| * |
| * UDataInfo fields: |
| * dataFormat "unam" |
| * formatVersion 1.0 |
| * dataVersion = Unicode version from -u or --unicode command line option, defaults to 3.0.0 |
| * |
| * -- data-based names |
| * uint32_t tokenStringOffset, |
| * groupsOffset, |
| * groupStringOffset, |
| * algNamesOffset; |
| * |
| * uint16_t tokenCount; |
| * uint16_t tokenTable[tokenCount]; |
| * |
| * char tokenStrings[]; -- padded to even count |
| * |
| * -- strings (groupStrings) are tokenized as follows: |
| * for each character c |
| * if(c>=tokenCount) write that character c directly |
| * else |
| * token=tokenTable[c]; |
| * if(token==0xfffe) -- lead byte of double-byte token |
| * token=tokenTable[c<<8|next character]; |
| * if(token==-1) |
| * write c directly |
| * else |
| * tokenString=tokenStrings+token; (tokenStrings=start of names data + tokenStringOffset;) |
| * append zero-terminated tokenString; |
| * |
| * Different strings for a code point - normal name, 1.0 name, and ISO comment - |
| * are separated by ';'. |
| * |
| * uint16_t groupCount; |
| * struct { |
| * uint16_t groupMSB; -- for a group of 32 character names stored, this is code point>>5 |
| * uint16_t offsetHigh; -- group strings are at start of names data + groupStringsOffset + this 32 bit-offset |
| * uint16_t offsetLow; |
| * } groupTable[groupCount]; |
| * |
| * char groupStrings[]; -- padded to 4-count |
| * |
| * -- The actual, tokenized group strings are not zero-terminated because |
| * that would take up too much space. |
| * Instead, they are preceeded by their length, written in a variable-length sequence: |
| * For each of the 32 group strings, one or two nibbles are stored for its length. |
| * Nibbles (4-bit values, half-bytes) are read MSB first. |
| * A nibble with a value of 0..11 directly indicates the length of the name string. |
| * A nibble n with a value of 12..15 is a lead nibble and forms a value with the following nibble m |
| * by (((n-12)<<4)|m)+12, reaching values of 12..75. |
| * These lengths are sequentially for each tokenized string, not for the de-tokenized result. |
| * For the de-tokenizing, see token description above; the strings immediately follow the |
| * 32 lengths. |
| * |
| * -- algorithmic names |
| * |
| * typedef struct AlgorithmicRange { |
| * uint32_t rangeStart, rangeEnd; |
| * uint8_t algorithmType, algorithmVariant; |
| * uint16_t rangeSize; |
| * } AlgorithmicRange; |
| * |
| * uint32_t algRangesCount; -- number of data blocks for ranges of |
| * algorithmic names (Unicode 3.0.0: 3, hardcoded in gennames) |
| * |
| * struct { |
| * AlgorithmicRange algRange; |
| * uint8_t algRangeData[]; -- padded to 4-count except in last range |
| * } algRanges[algNamesCount]; |
| * -- not a real array because each part has a different size |
| * of algRange.rangeSize (including AlgorithmicRange) |
| * |
| * -- algorithmic range types: |
| * |
| * 0 Names are formed from a string prefix that is stored in |
| * the algRangeData (zero-terminated), followed by the Unicode code point |
| * of the character in hexadecimal digits; |
| * algRange.algorithmVariant digits are written |
| * |
| * 1 Names are formed by calculating modulo-factors of the code point value as follows: |
| * algRange.algorithmVariant is the count of modulo factors |
| * algRangeData contains |
| * uint16_t factors[algRange.algorithmVariant]; |
| * char strings[]; |
| * the first zero-terminated string is written as the prefix; then: |
| * |
| * The rangeStart is subtracted; with the difference, here "code": |
| * for(i=algRange.algorithmVariant-1 to 0 step -1) |
| * index[i]=code%factor[i]; |
| * code/=factor[i]; |
| * |
| * The strings after the prefix are short pieces that are then appended to the result |
| * according to index[0..algRange.algorithmVariant-1]. |
| */ |
| |
| #include <stdio.h> |
| #include "unicode/utypes.h" |
| #include "unicode/putil.h" |
| #include "unicode/udata.h" |
| #include "charstr.h" |
| #include "cmemory.h" |
| #include "cstring.h" |
| #include "genprops.h" |
| #include "ppucd.h" |
| #include "uarrsort.h" |
| #include "uassert.h" |
| #include "unewdata.h" |
| #include "uoptions.h" |
| |
| #define STRING_STORE_SIZE 1000000 |
| #define GROUP_STORE_SIZE 5000 |
| |
| #define GROUP_SHIFT 5 |
| #define LINES_PER_GROUP (1UL<<GROUP_SHIFT) |
| #define GROUP_MASK (LINES_PER_GROUP-1) |
| |
| #define MAX_LINE_COUNT 50000 |
| #define MAX_WORD_COUNT 20000 |
| #define MAX_GROUP_COUNT 5000 |
| |
| #define NAME_SEPARATOR_CHAR ';' |
| |
| /* generator data ----------------------------------------------------------- */ |
| |
| U_NAMESPACE_USE |
| |
| /* UDataInfo cf. udata.h */ |
| static UDataInfo dataInfo={ |
| sizeof(UDataInfo), |
| 0, |
| |
| U_IS_BIG_ENDIAN, |
| U_CHARSET_FAMILY, |
| sizeof(UChar), |
| 0, |
| |
| {0x75, 0x6e, 0x61, 0x6d}, /* dataFormat="unam" */ |
| {1, 0, 0, 0}, /* formatVersion */ |
| {3, 0, 0, 0} /* dataVersion */ |
| }; |
| |
| static uint8_t stringStore[STRING_STORE_SIZE], |
| groupStore[GROUP_STORE_SIZE], |
| lineLengths[LINES_PER_GROUP]; |
| |
| static uint32_t lineTop=0, groupBottom, wordBottom=STRING_STORE_SIZE, lineLengthsTop; |
| |
| typedef struct { |
| uint32_t code; |
| int16_t length; |
| uint8_t *s; |
| } Line; |
| |
| typedef struct { |
| int32_t weight; /* -(cost for token) + (number of occurences) * (length-1) */ |
| int16_t count; |
| int16_t length; |
| uint8_t *s; |
| } Word; |
| |
| static Line lines[MAX_LINE_COUNT]; |
| static Word words[MAX_WORD_COUNT]; |
| |
| static uint32_t lineCount=0, wordCount=0; |
| |
| static int16_t leadByteCount; |
| |
| #define LEADBYTE_LIMIT 16 |
| |
| static int16_t tokens[LEADBYTE_LIMIT*256]; |
| static uint32_t tokenCount; |
| |
| /* the structure for algorithmic names needs to be 4-aligned */ |
| struct AlgorithmicRange { |
| UChar32 start, end; |
| uint8_t type, variant; |
| uint16_t size; |
| }; |
| |
| class NamesPropsBuilder : public PropsBuilder { |
| public: |
| NamesPropsBuilder(UErrorCode &errorCode); |
| virtual ~NamesPropsBuilder(); |
| |
| virtual void setUnicodeVersion(const UVersionInfo version); |
| virtual void setProps(const UniProps &, const UnicodeSet &newValues, UErrorCode &errorCode); |
| virtual void build(UErrorCode &errorCode); |
| virtual void writeBinaryData(const char *path, UBool withCopyright, UErrorCode &errorCode); |
| |
| private: |
| virtual void setAlgNamesRange(UChar32 start, UChar32 end, |
| const char *type, const char *prefix, UErrorCode &errorCode); |
| |
| CharString algRanges; |
| int32_t countAlgRanges; |
| }; |
| |
| NamesPropsBuilder::NamesPropsBuilder(UErrorCode &errorCode) |
| : countAlgRanges(0) { |
| for(int i=0; i<256; ++i) { |
| tokens[i]=0; |
| } |
| } |
| |
| NamesPropsBuilder::~NamesPropsBuilder() { |
| } |
| |
| void |
| NamesPropsBuilder::setUnicodeVersion(const UVersionInfo version) { |
| uprv_memcpy(dataInfo.dataVersion, version, 4); |
| } |
| |
| /* prototypes --------------------------------------------------------------- */ |
| |
| static void |
| parseName(const char *name, int16_t length); |
| |
| static int16_t |
| skipNoise(const char *line, int16_t start, int16_t limit); |
| |
| static int16_t |
| getWord(const char *line, int16_t start, int16_t limit); |
| |
| static void |
| compress(UErrorCode &errorCode); |
| |
| static void |
| compressLines(void); |
| |
| static int16_t |
| compressLine(uint8_t *s, int16_t length, int16_t *pGroupTop); |
| |
| static int32_t |
| compareWords(const void *context, const void *word1, const void *word2); |
| |
| static int16_t |
| findToken(uint8_t *s, int16_t length); |
| |
| static Word * |
| findWord(const char *s, int16_t length); |
| |
| static Word * |
| addWord(const char *s, int16_t length); |
| |
| static void |
| countWord(Word *word); |
| |
| static void |
| addLine(UChar32 code, const char *names[], int16_t lengths[], int16_t count); |
| |
| static void |
| addGroup(uint32_t groupMSB, uint8_t *strings, int16_t length); |
| |
| static uint32_t |
| addToken(uint8_t *s, int16_t length); |
| |
| static void |
| appendLineLength(int16_t length); |
| |
| static void |
| appendLineLengthNibble(uint8_t nibble); |
| |
| static uint8_t * |
| allocLine(int32_t length); |
| |
| static uint8_t * |
| allocWord(uint32_t length); |
| |
| /* parsing ------------------------------------------------------------------ */ |
| |
| void |
| NamesPropsBuilder::setProps(const UniProps &props, const UnicodeSet &newValues, |
| UErrorCode &errorCode) { |
| if(U_FAILURE(errorCode)) { return; } |
| if(!newValues.contains(UCHAR_NAME) && !newValues.contains(PPUCD_NAME_ALIAS)) { |
| return; |
| } |
| |
| U_ASSERT(props.start==props.end); |
| |
| const char *names[4]={ NULL, NULL, NULL, NULL }; |
| int16_t lengths[4]={ 0, 0, 0, 0 }; |
| |
| /* get the character name */ |
| if(props.name!=NULL) { |
| names[0]=props.name; |
| lengths[0]=(int16_t)uprv_strlen(props.name); |
| parseName(names[0], lengths[0]); |
| } |
| |
| CharString buffer; |
| if(props.nameAlias!=NULL) { |
| /* |
| * Only use "correction" aliases for now, from Unicode 6.1 NameAliases.txt with 3 fields per line. |
| * TODO: Work on ticket #8963 to deal with multiple type:alias pairs per character. |
| */ |
| const char *corr=uprv_strstr(props.nameAlias, "correction="); |
| if(corr!=NULL) { |
| corr+=11; // skip "correction=" |
| const char *limit=uprv_strchr(corr, ','); |
| if(limit!=NULL) { |
| buffer.append(corr, limit-corr, errorCode); |
| names[3]=buffer.data(); |
| lengths[3]=(int16_t)(limit-corr); |
| } else { |
| names[3]=corr; |
| lengths[3]=(int16_t)uprv_strlen(corr); |
| } |
| parseName(names[3], lengths[3]); |
| } |
| } |
| |
| addLine(props.start, names, lengths, LENGTHOF(names)); |
| } |
| |
| static void |
| parseName(const char *name, int16_t length) { |
| int16_t start=0, limit, wordLength/*, prevStart=-1*/; |
| Word *word; |
| |
| while(start<length) { |
| /* skip any "noise" characters */ |
| limit=skipNoise(name, start, length); |
| if(start<limit) { |
| /*prevStart=-1;*/ |
| start=limit; |
| } |
| if(start==length) { |
| break; |
| } |
| |
| /* get a word and add it if it is longer than 1 */ |
| limit=getWord(name, start, length); |
| wordLength=(int16_t)(limit-start); |
| if(wordLength>1) { |
| word=findWord(name+start, wordLength); |
| if(word==NULL) { |
| word=addWord(name+start, wordLength); |
| } |
| countWord(word); |
| } |
| |
| #if 0 |
| /* |
| * if there was a word before this |
| * (with no noise in between), then add the pair of words, too |
| */ |
| if(prevStart!=-1) { |
| wordLength=limit-prevStart; |
| word=findWord(name+prevStart, wordLength); |
| if(word==NULL) { |
| word=addWord(name+prevStart, wordLength); |
| } |
| countWord(word); |
| } |
| #endif |
| |
| /*prevStart=start;*/ |
| start=limit; |
| } |
| } |
| |
| static UBool |
| isWordChar(char c) { |
| return ('A'<=c && c<='I') || /* EBCDIC-safe check for letters */ |
| ('J'<=c && c<='R') || |
| ('S'<=c && c<='Z') || |
| |
| ('0'<=c && c<='9'); |
| } |
| |
| static int16_t |
| skipNoise(const char *line, int16_t start, int16_t limit) { |
| /* skip anything that is not part of a word in this sense */ |
| while(start<limit && !isWordChar(line[start])) { |
| ++start; |
| } |
| |
| return start; |
| } |
| |
| static int16_t |
| getWord(const char *line, int16_t start, int16_t limit) { |
| char c=0; /* initialize to avoid a compiler warning although the code was safe */ |
| |
| /* a unicode character name word consists of A-Z0-9 */ |
| while(start<limit && isWordChar(line[start])) { |
| ++start; |
| } |
| |
| /* include a following space or dash */ |
| if(start<limit && ((c=line[start])==' ' || c=='-')) { |
| ++start; |
| } |
| |
| return start; |
| } |
| |
| void |
| NamesPropsBuilder::setAlgNamesRange(UChar32 start, UChar32 end, |
| const char *type, |
| const char *prefix, // number of hex digits |
| UErrorCode &errorCode) { |
| /* modulo factors, maximum 8 */ |
| /* 3 factors: 19, 21, 28, most-to-least-significant */ |
| static const uint16_t hangulFactors[3]={ |
| 19, 21, 28 |
| }; |
| |
| static const char jamo[]= |
| "HANGUL SYLLABLE \0" |
| |
| "G\0GG\0N\0D\0DD\0R\0M\0B\0BB\0" |
| "S\0SS\0\0J\0JJ\0C\0K\0T\0P\0H\0" |
| |
| "A\0AE\0YA\0YAE\0EO\0E\0YEO\0YE\0O\0" |
| "WA\0WAE\0OE\0YO\0U\0WEO\0WE\0WI\0" |
| "YU\0EU\0YI\0I\0" |
| |
| "\0G\0GG\0GS\0N\0NJ\0NH\0D\0L\0LG\0LM\0" |
| "LB\0LS\0LT\0LP\0LH\0M\0B\0BS\0" |
| "S\0SS\0NG\0J\0C\0K\0T\0P\0H"; |
| |
| int32_t prefixLength=0; |
| AlgorithmicRange range; |
| uprv_memset(&range, 0, sizeof(AlgorithmicRange)); |
| int32_t rangeSize=(int32_t)sizeof(AlgorithmicRange); |
| range.start=start; |
| range.end=end; |
| if(0==uprv_strcmp(type, "han")) { |
| range.type=0; |
| range.variant= end<=0xffff ? 4 : 5; |
| prefixLength=uprv_strlen(prefix)+1; |
| rangeSize+=prefixLength; |
| } else if(0==uprv_strcmp(type, "hangul")) { |
| range.type=1; |
| range.variant=(uint8_t)LENGTHOF(hangulFactors); |
| rangeSize+=(int32_t)sizeof(hangulFactors); |
| rangeSize+=(int32_t)sizeof(jamo); |
| } else { |
| fprintf(stderr, "genprops error: unknown algnamesrange type '%s'\n", prefix); |
| errorCode=U_ILLEGAL_ARGUMENT_ERROR; |
| return; |
| } |
| int32_t paddingLength=paddingLength=rangeSize&3; |
| if(paddingLength) { |
| paddingLength=4-paddingLength; |
| rangeSize+=paddingLength; |
| } |
| range.size=(uint16_t)rangeSize; |
| algRanges.append((char *)&range, (int32_t)sizeof(AlgorithmicRange), errorCode); |
| if(range.type==0) { // han |
| algRanges.append(prefix, prefixLength, errorCode); |
| } else /* type==1 */ { // hangul |
| algRanges.append((char *)hangulFactors, (int32_t)sizeof(hangulFactors), errorCode); |
| algRanges.append(jamo, (int32_t)sizeof(jamo), errorCode); |
| } |
| while(paddingLength) { |
| algRanges.append((char)0xaa, errorCode); |
| --paddingLength; |
| } |
| ++countAlgRanges; |
| } |
| |
| /* compressing -------------------------------------------------------------- */ |
| |
| static void |
| compress(UErrorCode &errorCode) { |
| uint32_t i, letterCount; |
| int16_t wordNumber; |
| |
| /* sort the words in reverse order by weight */ |
| uprv_sortArray(words, wordCount, sizeof(Word), |
| compareWords, NULL, FALSE, &errorCode); |
| |
| /* remove the words that do not save anything */ |
| while(wordCount>0 && words[wordCount-1].weight<1) { |
| --wordCount; |
| } |
| |
| /* count the letters in the token range */ |
| letterCount=0; |
| for(i=LEADBYTE_LIMIT; i<256; ++i) { |
| if(tokens[i]==-1) { |
| ++letterCount; |
| } |
| } |
| if(!beQuiet) { |
| printf("number of letters used in the names: %d\n", (int)letterCount); |
| } |
| |
| /* do we need double-byte tokens? */ |
| if(wordCount+letterCount<=256) { |
| /* no, single-byte tokens are enough */ |
| leadByteCount=0; |
| for(i=0, wordNumber=0; wordNumber<(int16_t)wordCount; ++i) { |
| if(tokens[i]!=-1) { |
| tokens[i]=wordNumber; |
| if(beVerbose) { |
| printf("tokens[0x%03x]: word%8ld \"%.*s\"\n", |
| (int)i, (long)words[wordNumber].weight, |
| words[wordNumber].length, words[wordNumber].s); |
| } |
| ++wordNumber; |
| } |
| } |
| tokenCount=i; |
| } else { |
| /* |
| * The tokens that need two token bytes |
| * get their weight reduced by their count |
| * because they save less. |
| */ |
| tokenCount=256-letterCount; |
| for(i=tokenCount; i<wordCount; ++i) { |
| words[i].weight-=words[i].count; |
| } |
| |
| /* sort these words in reverse order by weight */ |
| errorCode=U_ZERO_ERROR; |
| uprv_sortArray(words+tokenCount, wordCount-tokenCount, sizeof(Word), |
| compareWords, NULL, FALSE, &errorCode); |
| |
| /* remove the words that do not save anything */ |
| while(wordCount>0 && words[wordCount-1].weight<1) { |
| --wordCount; |
| } |
| |
| /* how many tokens and lead bytes do we have now? */ |
| tokenCount=wordCount+letterCount+(LEADBYTE_LIMIT-1); |
| /* |
| * adjust upwards to take into account that |
| * double-byte tokens must not |
| * use NAME_SEPARATOR_CHAR as a second byte |
| */ |
| tokenCount+=(tokenCount-256+254)/255; |
| |
| leadByteCount=(int16_t)(tokenCount>>8); |
| if(leadByteCount<LEADBYTE_LIMIT) { |
| /* adjust for the real number of lead bytes */ |
| tokenCount-=(LEADBYTE_LIMIT-1)-leadByteCount; |
| } else { |
| /* limit the number of lead bytes */ |
| leadByteCount=LEADBYTE_LIMIT-1; |
| tokenCount=LEADBYTE_LIMIT*256; |
| wordCount=tokenCount-letterCount-(LEADBYTE_LIMIT-1); |
| /* adjust again to skip double-byte tokens with ';' */ |
| wordCount-=(tokenCount-256+254)/255; |
| } |
| |
| /* set token 0 to word 0 */ |
| tokens[0]=0; |
| if(beVerbose) { |
| printf("tokens[0x000]: word%8ld \"%.*s\"\n", |
| (long)words[0].weight, |
| words[0].length, words[0].s); |
| } |
| wordNumber=1; |
| |
| /* set the lead byte tokens */ |
| for(i=1; (int16_t)i<=leadByteCount; ++i) { |
| tokens[i]=-2; |
| } |
| |
| /* set the tokens */ |
| for(; i<256; ++i) { |
| /* if store10Names then the parser set tokens[NAME_SEPARATOR_CHAR]=-1 */ |
| if(tokens[i]!=-1) { |
| tokens[i]=wordNumber; |
| if(beVerbose) { |
| printf("tokens[0x%03x]: word%8ld \"%.*s\"\n", |
| (int)i, (long)words[wordNumber].weight, |
| words[wordNumber].length, words[wordNumber].s); |
| } |
| ++wordNumber; |
| } |
| } |
| |
| /* continue above 255 where there are no letters */ |
| for(; (uint32_t)wordNumber<wordCount; ++i) { |
| if((i&0xff)==NAME_SEPARATOR_CHAR) { |
| tokens[i]=-1; /* do not use NAME_SEPARATOR_CHAR as a second token byte */ |
| } else { |
| tokens[i]=wordNumber; |
| if(beVerbose) { |
| printf("tokens[0x%03x]: word%8ld \"%.*s\"\n", |
| (int)i, (long)words[wordNumber].weight, |
| words[wordNumber].length, words[wordNumber].s); |
| } |
| ++wordNumber; |
| } |
| } |
| tokenCount=i; /* should be already tokenCount={i or i+1} */ |
| } |
| |
| if(!beQuiet) { |
| printf("number of lead bytes: %d\n", leadByteCount); |
| printf("number of single-byte tokens: %lu\n", |
| (unsigned long)256-letterCount-leadByteCount); |
| printf("number of tokens: %lu\n", (unsigned long)tokenCount); |
| } |
| |
| compressLines(); |
| } |
| |
| static void |
| compressLines() { |
| Line *line=NULL; |
| uint32_t i=0, inLine, outLine=0xffffffff /* (uint32_t)(-1) */, |
| groupMSB=0xffff, lineCount2; |
| int16_t groupTop=0; |
| |
| /* store the groups like lines, with compressed data after raw strings */ |
| groupBottom=lineTop; |
| lineCount2=lineCount; |
| lineCount=0; |
| |
| /* loop over all lines */ |
| while(i<lineCount2) { |
| line=lines+i++; |
| inLine=line->code; |
| |
| /* segment the lines to groups of 32 */ |
| if(inLine>>GROUP_SHIFT!=groupMSB) { |
| /* finish the current group with empty lines */ |
| while((++outLine&GROUP_MASK)!=0) { |
| appendLineLength(0); |
| } |
| |
| /* store the group like a line */ |
| if(groupTop>0) { |
| if(groupTop>GROUP_STORE_SIZE) { |
| fprintf(stderr, "gennames: group store overflow\n"); |
| exit(U_BUFFER_OVERFLOW_ERROR); |
| } |
| addGroup(groupMSB, groupStore, groupTop); |
| } |
| |
| /* start the new group */ |
| lineLengthsTop=0; |
| groupTop=0; |
| groupMSB=inLine>>GROUP_SHIFT; |
| outLine=(inLine&~GROUP_MASK)-1; |
| } |
| |
| /* write empty lines between the previous line in the group and this one */ |
| while(++outLine<inLine) { |
| appendLineLength(0); |
| } |
| |
| /* write characters and tokens for this line */ |
| appendLineLength(compressLine(line->s, line->length, &groupTop)); |
| } |
| |
| /* finish and store the last group */ |
| if(line && groupMSB!=0xffff) { |
| /* finish the current group with empty lines */ |
| while((++outLine&GROUP_MASK)!=0) { |
| appendLineLength(0); |
| } |
| |
| /* store the group like a line */ |
| if(groupTop>0) { |
| if(groupTop>GROUP_STORE_SIZE) { |
| fprintf(stderr, "gennames: group store overflow\n"); |
| exit(U_BUFFER_OVERFLOW_ERROR); |
| } |
| addGroup(groupMSB, groupStore, groupTop); |
| } |
| } |
| |
| if(!beQuiet) { |
| printf("number of groups: %lu\n", (unsigned long)lineCount); |
| } |
| } |
| |
| static int16_t |
| compressLine(uint8_t *s, int16_t length, int16_t *pGroupTop) { |
| int16_t start, limit, token, groupTop=*pGroupTop; |
| |
| start=0; |
| do { |
| /* write any "noise" characters */ |
| limit=skipNoise((char *)s, start, length); |
| while(start<limit) { |
| groupStore[groupTop++]=s[start++]; |
| } |
| |
| if(start==length) { |
| break; |
| } |
| |
| /* write a word, as token or directly */ |
| limit=getWord((char *)s, start, length); |
| if(limit-start==1) { |
| groupStore[groupTop++]=s[start++]; |
| } else { |
| token=findToken(s+start, (int16_t)(limit-start)); |
| if(token!=-1) { |
| if(token>0xff) { |
| groupStore[groupTop++]=(uint8_t)(token>>8); |
| } |
| groupStore[groupTop++]=(uint8_t)token; |
| start=limit; |
| } else { |
| while(start<limit) { |
| groupStore[groupTop++]=s[start++]; |
| } |
| } |
| } |
| } while(start<length); |
| |
| length=(int16_t)(groupTop-*pGroupTop); |
| *pGroupTop=groupTop; |
| return length; |
| } |
| |
| static int32_t |
| compareWords(const void *context, const void *word1, const void *word2) { |
| /* reverse sort by word weight */ |
| return ((Word *)word2)->weight-((Word *)word1)->weight; |
| } |
| |
| void |
| NamesPropsBuilder::build(UErrorCode &errorCode) { |
| if(U_FAILURE(errorCode)) { return; } |
| |
| if(!beQuiet) { |
| puts("* unames.icu stats *"); |
| printf("size of all names in the database: %lu\n", |
| (unsigned long)lineTop); |
| printf("number of named Unicode characters: %lu\n", |
| (unsigned long)lineCount); |
| printf("number of words in the dictionary from these names: %lu\n", |
| (unsigned long)wordCount); |
| } |
| compress(errorCode); |
| } |
| |
| /* generate output data ----------------------------------------------------- */ |
| |
| void |
| NamesPropsBuilder::writeBinaryData(const char *path, UBool withCopyright, UErrorCode &errorCode) { |
| if(U_FAILURE(errorCode)) { return; } |
| |
| UNewDataMemory *pData=udata_create(path, "icu", "unames", &dataInfo, |
| withCopyright ? U_COPYRIGHT_STRING : NULL, &errorCode); |
| if(U_FAILURE(errorCode)) { |
| fprintf(stderr, "genprops: udata_create(%s, unames.icu) failed - %s\n", |
| path, u_errorName(errorCode)); |
| return; |
| } |
| |
| uint16_t groupWords[3]; |
| uint32_t i, groupTop=lineTop, size, |
| tokenStringOffset, groupsOffset, groupStringOffset, algNamesOffset; |
| long dataLength; |
| int16_t token; |
| |
| /* first, see how much space we need, and prepare the token strings */ |
| for(i=0; i<tokenCount; ++i) { |
| token=tokens[i]; |
| if(token!=-1 && token!=-2) { |
| tokens[i]=(int16_t)(addToken(words[token].s, words[token].length)-groupTop); |
| } |
| } |
| |
| /* |
| * Required padding for data swapping: |
| * The token table undergoes a permutation during data swapping when the |
| * input and output charsets are different. |
| * The token table cannot grow during swapping, so we need to make sure that |
| * the table is long enough for successful in-place permutation. |
| * |
| * We simply round up tokenCount to the next multiple of 256 to account for |
| * all possible permutations. |
| * |
| * An optimization is possible if we only ever swap between ASCII and EBCDIC: |
| * |
| * If tokenCount>256, then a semicolon (NAME_SEPARATOR_CHAR) is used |
| * and will be swapped between ASCII and EBCDIC between |
| * positions 0x3b (ASCII semicolon) and 0x5e (EBCDIC semicolon). |
| * This should be the only -1 entry in tokens[256..511] on which the data |
| * swapper bases its trail byte permutation map (trailMap[]). |
| * |
| * It would be sufficient to increase tokenCount so that its lower 8 bits |
| * are at least 0x5e+1 to make room for swapping between the two semicolons. |
| * For values higher than 0x5e, the trail byte permutation map (trailMap[]) |
| * should always be an identity map, where we do not need additional room. |
| */ |
| i=tokenCount; |
| tokenCount=(tokenCount+0xff)&~0xff; |
| if(!beQuiet && i<tokenCount) { |
| printf("number of tokens[] padding entries for data swapping: %lu\n", (unsigned long)(tokenCount-i)); |
| } |
| for(; i<tokenCount; ++i) { |
| if((i&0xff)==NAME_SEPARATOR_CHAR) { |
| tokens[i]=-1; /* do not use NAME_SEPARATOR_CHAR as a second token byte */ |
| } else { |
| tokens[i]=0; /* unused token for padding */ |
| } |
| } |
| |
| /* |
| * Calculate the total size in bytes of the data including: |
| * - the offset to the token strings, uint32_t (4) |
| * - the offset to the group table, uint32_t (4) |
| * - the offset to the group strings, uint32_t (4) |
| * - the offset to the algorithmic names, uint32_t (4) |
| * |
| * - the number of tokens, uint16_t (2) |
| * - the token table, uint16_t[tokenCount] (2*tokenCount) |
| * |
| * - the token strings, each zero-terminated (tokenSize=(lineTop-groupTop)), 2-padded |
| * |
| * - the number of groups, uint16_t (2) |
| * - the group table, { uint16_t groupMSB, uint16_t offsetHigh, uint16_t offsetLow }[6*groupCount] |
| * |
| * - the group strings (groupTop-groupBottom), 2-padded |
| * |
| * - the size of the data for the algorithmic names |
| */ |
| tokenStringOffset=4+4+4+4+2+2*tokenCount; |
| groupsOffset=(tokenStringOffset+(lineTop-groupTop)+1)&~1; |
| groupStringOffset=groupsOffset+2+6*lineCount; |
| algNamesOffset=(groupStringOffset+(groupTop-groupBottom)+3)&~3; |
| |
| size=algNamesOffset+4+algRanges.length(); |
| |
| if(!beQuiet) { |
| printf("size of the Unicode Names data:\n" |
| "total data length %lu, token strings %lu, compressed strings %lu, algorithmic names %lu\n", |
| (unsigned long)size, (unsigned long)(lineTop-groupTop), |
| (unsigned long)(groupTop-groupBottom), (unsigned long)(4+algRanges.length())); |
| } |
| |
| /* write the data to the file */ |
| /* offsets */ |
| udata_write32(pData, tokenStringOffset); |
| udata_write32(pData, groupsOffset); |
| udata_write32(pData, groupStringOffset); |
| udata_write32(pData, algNamesOffset); |
| |
| /* token table */ |
| udata_write16(pData, (uint16_t)tokenCount); |
| udata_writeBlock(pData, tokens, 2*tokenCount); |
| |
| /* token strings */ |
| udata_writeBlock(pData, stringStore+groupTop, lineTop-groupTop); |
| if((lineTop-groupTop)&1) { |
| /* 2-padding */ |
| udata_writePadding(pData, 1); |
| } |
| |
| /* group table */ |
| udata_write16(pData, (uint16_t)lineCount); |
| for(i=0; i<lineCount; ++i) { |
| /* groupMSB */ |
| groupWords[0]=(uint16_t)lines[i].code; |
| |
| /* offset */ |
| uint32_t offset = (uint32_t)((lines[i].s - stringStore)-groupBottom); |
| groupWords[1]=(uint16_t)(offset>>16); |
| groupWords[2]=(uint16_t)(offset); |
| udata_writeBlock(pData, groupWords, 6); |
| } |
| |
| /* group strings */ |
| udata_writeBlock(pData, stringStore+groupBottom, groupTop-groupBottom); |
| |
| /* 4-align the algorithmic names data */ |
| udata_writePadding(pData, algNamesOffset-(groupStringOffset+(groupTop-groupBottom))); |
| |
| udata_write32(pData, countAlgRanges); |
| udata_writeBlock(pData, algRanges.data(), algRanges.length()); |
| |
| /* finish up */ |
| dataLength=udata_finish(pData, &errorCode); |
| if(U_FAILURE(errorCode)) { |
| fprintf(stderr, "gennames: error %d writing the output file\n", errorCode); |
| exit(errorCode); |
| } |
| |
| if(dataLength!=(long)size) { |
| fprintf(stderr, "gennames: data length %ld != calculated size %lu\n", |
| dataLength, (unsigned long)size); |
| exit(U_INTERNAL_PROGRAM_ERROR); |
| } |
| } |
| |
| /* helpers ------------------------------------------------------------------ */ |
| |
| static int16_t |
| findToken(uint8_t *s, int16_t length) { |
| int16_t i, token; |
| |
| for(i=0; i<(int16_t)tokenCount; ++i) { |
| token=tokens[i]; |
| if(token>=0 && length==words[token].length && 0==uprv_memcmp(s, words[token].s, length)) { |
| return i; |
| } |
| } |
| |
| return -1; |
| } |
| |
| static Word * |
| findWord(const char *s, int16_t length) { |
| uint32_t i; |
| |
| for(i=0; i<wordCount; ++i) { |
| if(length==words[i].length && 0==uprv_memcmp(s, words[i].s, length)) { |
| return words+i; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static Word * |
| addWord(const char *s, int16_t length) { |
| uint8_t *stringStart; |
| Word *word; |
| |
| if(wordCount==MAX_WORD_COUNT) { |
| fprintf(stderr, "gennames: too many words\n"); |
| exit(U_BUFFER_OVERFLOW_ERROR); |
| } |
| |
| stringStart=allocWord(length); |
| uprv_memcpy(stringStart, s, length); |
| |
| word=words+wordCount; |
| |
| /* |
| * Initialize the weight with the costs for this token: |
| * a zero-terminated string and a 16-bit offset. |
| */ |
| word->weight=-(length+1+2); |
| word->count=0; |
| word->length=length; |
| word->s=stringStart; |
| |
| ++wordCount; |
| |
| return word; |
| } |
| |
| static void |
| countWord(Word *word) { |
| /* add to the weight the savings: the length of the word minus 1 byte for the token */ |
| word->weight+=word->length-1; |
| ++word->count; |
| } |
| |
| static void |
| addLine(UChar32 code, const char *names[], int16_t lengths[], int16_t count) { |
| uint8_t *stringStart; |
| Line *line; |
| int16_t i, length; |
| |
| if(lineCount==MAX_LINE_COUNT) { |
| fprintf(stderr, "gennames: too many lines\n"); |
| exit(U_BUFFER_OVERFLOW_ERROR); |
| } |
| |
| /* find the last non-empty name */ |
| while(count>0 && lengths[count-1]==0) { |
| --count; |
| } |
| if(count==0) { |
| return; /* should not occur: caller should not have called */ |
| } |
| |
| /* there will be (count-1) separator characters */ |
| i=count; |
| length=count-1; |
| |
| /* add lengths of strings */ |
| while(i>0) { |
| length+=lengths[--i]; |
| } |
| |
| /* allocate line memory */ |
| stringStart=allocLine(length); |
| |
| /* copy all strings into the line memory */ |
| length=0; /* number of chars copied so far */ |
| for(i=0; i<count; ++i) { |
| if(i>0) { |
| stringStart[length++]=NAME_SEPARATOR_CHAR; |
| } |
| if(lengths[i]>0) { |
| uprv_memcpy(stringStart+length, names[i], lengths[i]); |
| length+=lengths[i]; |
| } |
| } |
| |
| line=lines+lineCount; |
| |
| line->code=code; |
| line->length=length; |
| line->s=stringStart; |
| |
| ++lineCount; |
| |
| /* prevent a character value that is actually in a name from becoming a token */ |
| while(length>0) { |
| tokens[stringStart[--length]]=-1; |
| } |
| } |
| |
| static void |
| addGroup(uint32_t groupMSB, uint8_t *strings, int16_t length) { |
| uint8_t *stringStart; |
| Line *line; |
| |
| if(lineCount==MAX_LINE_COUNT) { |
| fprintf(stderr, "gennames: too many groups\n"); |
| exit(U_BUFFER_OVERFLOW_ERROR); |
| } |
| |
| /* store the line lengths first, then the strings */ |
| lineLengthsTop=(lineLengthsTop+1)/2; |
| stringStart=allocLine(lineLengthsTop+length); |
| uprv_memcpy(stringStart, lineLengths, lineLengthsTop); |
| uprv_memcpy(stringStart+lineLengthsTop, strings, length); |
| |
| line=lines+lineCount; |
| |
| line->code=groupMSB; |
| line->length=length; |
| line->s=stringStart; |
| |
| ++lineCount; |
| } |
| |
| static uint32_t |
| addToken(uint8_t *s, int16_t length) { |
| uint8_t *stringStart; |
| |
| stringStart=allocLine(length+1); |
| uprv_memcpy(stringStart, s, length); |
| stringStart[length]=0; |
| |
| return (uint32_t)(stringStart - stringStore); |
| } |
| |
| static void |
| appendLineLength(int16_t length) { |
| if(length>=76) { |
| fprintf(stderr, "gennames: compressed line too long\n"); |
| exit(U_BUFFER_OVERFLOW_ERROR); |
| } |
| if(length>=12) { |
| length-=12; |
| appendLineLengthNibble((uint8_t)((length>>4)|12)); |
| } |
| appendLineLengthNibble((uint8_t)length); |
| } |
| |
| static void |
| appendLineLengthNibble(uint8_t nibble) { |
| if((lineLengthsTop&1)==0) { |
| lineLengths[lineLengthsTop/2]=(uint8_t)(nibble<<4); |
| } else { |
| lineLengths[lineLengthsTop/2]|=nibble&0xf; |
| } |
| ++lineLengthsTop; |
| } |
| |
| static uint8_t * |
| allocLine(int32_t length) { |
| uint32_t top=lineTop+length; |
| uint8_t *p; |
| |
| if(top>wordBottom) { |
| fprintf(stderr, "gennames: out of memory\n"); |
| exit(U_MEMORY_ALLOCATION_ERROR); |
| } |
| p=stringStore+lineTop; |
| lineTop=top; |
| return p; |
| } |
| |
| static uint8_t * |
| allocWord(uint32_t length) { |
| uint32_t bottom=wordBottom-length; |
| |
| if(lineTop>bottom) { |
| fprintf(stderr, "gennames: out of memory\n"); |
| exit(U_MEMORY_ALLOCATION_ERROR); |
| } |
| wordBottom=bottom; |
| return stringStore+bottom; |
| } |
| |
| PropsBuilder * |
| createNamesPropsBuilder(UErrorCode &errorCode) { |
| if(U_FAILURE(errorCode)) { return NULL; } |
| PropsBuilder *pb=new NamesPropsBuilder(errorCode); |
| if(pb==NULL) { |
| errorCode=U_MEMORY_ALLOCATION_ERROR; |
| } |
| return pb; |
| } |
| |
| /* |
| * Hey, Emacs, please set the following: |
| * |
| * Local Variables: |
| * indent-tabs-mode: nil |
| * End: |
| * |
| */ |
