/*
*******************************************************************************
*
*   Copyright (C) 1999-2002, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  genprops.c
*   encoding:   US-ASCII
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 1999dec08
*   created by: Markus W. Scherer
*
*   This program reads the Unicode character database text file,
*   parses it, and extracts most of the properties for each character.
*   It then writes a binary file containing the properties
*   that is designed to be used directly for random-access to
*   the properties of each Unicode character.
*/

#include <stdio.h>
#include <stdlib.h>
#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "unicode/putil.h"
#include "cmemory.h"
#include "cstring.h"
#include "unicode/udata.h"
#include "unewdata.h"
#include "uoptions.h"
#include "uparse.h"

U_CDECL_BEGIN
#include "genprops.h"
U_CDECL_END

UBool beVerbose=FALSE, haveCopyright=TRUE;

/* prototypes --------------------------------------------------------------- */

static void
parseBidiMirroring(const char *filename, UErrorCode *pErrorCode);

static void
parseSpecialCasing(const char *filename, UErrorCode *pErrorCode);

static void
parseCaseFolding(const char *filename, UErrorCode *pErrorCode);

static void
parseDB(const char *filename, UErrorCode *pErrorCode);

/* -------------------------------------------------------------------------- */

static UOption options[]={
    UOPTION_HELP_H,
    UOPTION_HELP_QUESTION_MARK,
    UOPTION_VERBOSE,
    UOPTION_COPYRIGHT,
    UOPTION_DESTDIR,
    UOPTION_SOURCEDIR,
    { "unicode", NULL, NULL, NULL, 'u', UOPT_REQUIRES_ARG, 0 }
};

extern int
main(int argc, char* argv[]) {
    char filename[300];
    const char *srcDir=NULL, *destDir=NULL, *suffix=NULL;
    char *basename=NULL;
    UErrorCode errorCode=U_ZERO_ERROR;

    U_MAIN_INIT_ARGS(argc, argv);

    /* preset then read command line options */
    options[4].value=u_getDataDirectory();
    options[5].value="";
    options[6].value="3.0.0";
    argc=u_parseArgs(argc, argv, sizeof(options)/sizeof(options[0]), options);

    /* error handling, printing usage message */
    if(argc<0) {
        fprintf(stderr,
            "error in command line argument \"%s\"\n",
            argv[-argc]);
    }
    if(argc<0 || options[0].doesOccur || options[1].doesOccur) {
        /*
         * Broken into chucks because the C89 standard says the minimum
         * required supported string length is 509 bytes.
         */
        fprintf(stderr,
            "Usage: %s [-options] [suffix]\n"
            "\n"
            "read the UnicodeData.txt file and other Unicode properties files and\n"
            "create a binary file " DATA_NAME "." DATA_TYPE " with the character properties\n"
            "\n",
            argv[0]);
        fprintf(stderr,
            "Options:\n"
            "\t-h or -? or --help  this usage text\n"
            "\t-v or --verbose     verbose output\n"
            "\t-c or --copyright   include a copyright notice\n"
            "\t-u or --unicode     Unicode version, followed by the version like 3.0.0\n");
        fprintf(stderr,
            "\t-d or --destdir     destination directory, followed by the path\n"
            "\t-s or --sourcedir   source directory, followed by the path\n"
            "\tsuffix              suffix that is to be appended with a '-'\n"
            "\t                    to the source file basenames before opening;\n"
            "\t                    'genprops new' will read UnicodeData-new.txt etc.\n");
        return argc<0 ? U_ILLEGAL_ARGUMENT_ERROR : U_ZERO_ERROR;
    }

    /* get the options values */
    beVerbose=options[2].doesOccur;
    haveCopyright=options[3].doesOccur;
    srcDir=options[5].value;
    destDir=options[4].value;

    if(argc>=2) {
        suffix=argv[1];
    } else {
        suffix=NULL;
    }

    setUnicodeVersion(options[6].value);

    /* prepare the filename beginning with the source dir */
    uprv_strcpy(filename, srcDir);
    basename=filename+uprv_strlen(filename);
    if(basename>filename && *(basename-1)!=U_FILE_SEP_CHAR) {
        *basename++=U_FILE_SEP_CHAR;
    }

    /* initialize */
    initStore();

    /* process BidiMirroring.txt */
    writeUCDFilename(basename, "BidiMirroring", suffix);
    parseBidiMirroring(filename, &errorCode);

    /* process SpecialCasing.txt */
    writeUCDFilename(basename, "SpecialCasing", suffix);
    parseSpecialCasing(filename, &errorCode);

    /* process CaseFolding.txt */
    writeUCDFilename(basename, "CaseFolding", suffix);
    parseCaseFolding(filename, &errorCode);

    /* process UnicodeData.txt */
    writeUCDFilename(basename, "UnicodeData", suffix);
    parseDB(filename, &errorCode);

    /* process additional properties files */
    *basename=0;
    generateAdditionalProperties(filename, suffix, &errorCode);

    /* process parsed data */
    if(U_SUCCESS(errorCode)) {
        /* write the properties data file */
        generateData(destDir);
    }

    return errorCode;
}

U_CFUNC void
writeUCDFilename(char *basename, const char *filename, const char *suffix) {
    int32_t length=uprv_strlen(filename);
    uprv_strcpy(basename, filename);
    if(suffix!=NULL) {
        basename[length++]='-';
        uprv_strcpy(basename+length, suffix);
        length+=uprv_strlen(suffix);
    }
    uprv_strcpy(basename+length, ".txt");
}

U_CFUNC int32_t
getTokenIndex(const char *const tokens[], int32_t countTokens, const char *s) {
    const char *t, *z;
    int32_t i, j;

    s=u_skipWhitespace(s);
    for(i=0; i<countTokens; ++i) {
        t=tokens[i];
        if(t!=NULL) {
            for(j=0;; ++j) {
                if(t[j]!=0) {
                    if(s[j]!=t[j]) {
                        break;
                    }
                } else {
                    z=u_skipWhitespace(s+j);
                    if(*z==';' || *z==0) {
                        return i;
                    } else {
                        break;
                    }
                }
            }
        }
    }
    return -1;
}

/* parser for BidiMirroring.txt --------------------------------------------- */

#define MAX_MIRROR_COUNT 2000

static uint32_t mirrorMappings[MAX_MIRROR_COUNT][2];
static int32_t mirrorCount=0;

static void
mirrorLineFn(void *context,
             char *fields[][2], int32_t fieldCount,
             UErrorCode *pErrorCode) {
    char *end;
    static uint32_t prevCode=0;

    mirrorMappings[mirrorCount][0]=(uint32_t)uprv_strtoul(fields[0][0], &end, 16);
    if(end<=fields[0][0] || end!=fields[0][1]) {
        fprintf(stderr, "genprops: syntax error in BidiMirroring.txt field 0 at %s\n", fields[0][0]);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    mirrorMappings[mirrorCount][1]=(uint32_t)uprv_strtoul(fields[1][0], &end, 16);
    if(end<=fields[1][0] || end!=fields[1][1]) {
        fprintf(stderr, "genprops: syntax error in BidiMirroring.txt field 1 at %s\n", fields[1][0]);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* check that the code points (mirrorMappings[mirrorCount][0]) are in ascending order */
    if(mirrorMappings[mirrorCount][0]<=prevCode && mirrorMappings[mirrorCount][0]>0) {
        fprintf(stderr, "genprops: error - BidiMirroring entries out of order, U+%04lx after U+%04lx\n",
                (unsigned long)mirrorMappings[mirrorCount][0],
                (unsigned long)prevCode);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    prevCode=mirrorMappings[mirrorCount][0];

    if(++mirrorCount==MAX_MIRROR_COUNT) {
        fprintf(stderr, "genprops: too many mirror mappings\n");
        *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
        exit(U_INDEX_OUTOFBOUNDS_ERROR);
    }
}

static void
parseBidiMirroring(const char *filename, UErrorCode *pErrorCode) {
    char *fields[2][2];

    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return;
    }

    u_parseDelimitedFile(filename, ';', fields, 2, mirrorLineFn, NULL, pErrorCode);
}

/* parser for SpecialCasing.txt --------------------------------------------- */

#define MAX_SPECIAL_CASING_COUNT 500

static SpecialCasing specialCasings[MAX_SPECIAL_CASING_COUNT];
static int32_t specialCasingCount=0;

static void
specialCasingLineFn(void *context,
                    char *fields[][2], int32_t fieldCount,
                    UErrorCode *pErrorCode) {
    char *end;

    /* get code point */
    specialCasings[specialCasingCount].code=(uint32_t)uprv_strtoul(u_skipWhitespace(fields[0][0]), &end, 16);
    end=(char *)u_skipWhitespace(end);
    if(end<=fields[0][0] || end!=fields[0][1]) {
        fprintf(stderr, "genprops: syntax error in SpecialCasing.txt field 0 at %s\n", fields[0][0]);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* is this a complex mapping? */
    if(*u_skipWhitespace(fields[4][0])!=0) {
        /* there is some condition text in the fifth field */
        specialCasings[specialCasingCount].isComplex=TRUE;

        /* do not store any actual mappings for this */
        specialCasings[specialCasingCount].lowerCase[0]=0;
        specialCasings[specialCasingCount].upperCase[0]=0;
        specialCasings[specialCasingCount].titleCase[0]=0;
    } else {
        /* just set the "complex" flag and get the case mappings */
        specialCasings[specialCasingCount].isComplex=FALSE;
        specialCasings[specialCasingCount].lowerCase[0]=
            (UChar)u_parseString(fields[1][0], specialCasings[specialCasingCount].lowerCase+1, 31, NULL, pErrorCode);
        specialCasings[specialCasingCount].upperCase[0]=
            (UChar)u_parseString(fields[3][0], specialCasings[specialCasingCount].upperCase+1, 31, NULL, pErrorCode);
        specialCasings[specialCasingCount].titleCase[0]=
            (UChar)u_parseString(fields[2][0], specialCasings[specialCasingCount].titleCase+1, 31, NULL, pErrorCode);
        if(U_FAILURE(*pErrorCode)) {
            fprintf(stderr, "genprops: error parsing special casing at %s\n", fields[0][0]);
            exit(*pErrorCode);
        }
    }

    if(++specialCasingCount==MAX_SPECIAL_CASING_COUNT) {
        fprintf(stderr, "genprops: too many special casing mappings\n");
        *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
        exit(U_INDEX_OUTOFBOUNDS_ERROR);
    }
}

static int
compareSpecialCasings(const void *left, const void *right) {
    return ((const SpecialCasing *)left)->code-((const SpecialCasing *)right)->code;
}

static void
parseSpecialCasing(const char *filename, UErrorCode *pErrorCode) {
    char *fields[5][2];
    int32_t i, j;

    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return;
    }

    u_parseDelimitedFile(filename, ';', fields, 5, specialCasingLineFn, NULL, pErrorCode);

    /* sort the special casing entries by code point */
    if(specialCasingCount>0) {
        qsort(specialCasings, specialCasingCount, sizeof(SpecialCasing), compareSpecialCasings);
    }

    /* replace multiple entries for any code point by one "complex" one */
    j=0;
    for(i=1; i<specialCasingCount; ++i) {
        if(specialCasings[i-1].code==specialCasings[i].code) {
            /* there is a duplicate code point */
            specialCasings[i-1].code=0x7fffffff;    /* remove this entry in the following qsort */
            specialCasings[i].isComplex=TRUE;       /* make the following one complex */
            specialCasings[i].lowerCase[0]=0;
            specialCasings[i].upperCase[0]=0;
            specialCasings[i].titleCase[0]=0;
            ++j;
        }
    }

    /* if some entries just were removed, then re-sort */
    if(j>0) {
        qsort(specialCasings, specialCasingCount, sizeof(SpecialCasing), compareSpecialCasings);
        specialCasingCount-=j;
    }
}

/* parser for CaseFolding.txt ----------------------------------------------- */

#define MAX_CASE_FOLDING_COUNT 2000

static CaseFolding caseFoldings[MAX_CASE_FOLDING_COUNT];
static int32_t caseFoldingCount=0;

static void
caseFoldingLineFn(void *context,
                  char *fields[][2], int32_t fieldCount,
                  UErrorCode *pErrorCode) {
    char *end;
    static uint32_t prevCode=0;
    int32_t count;
    char status;

    /* get code point */
    caseFoldings[caseFoldingCount].code=(uint32_t)uprv_strtoul(u_skipWhitespace(fields[0][0]), &end, 16);
    end=(char *)u_skipWhitespace(end);
    if(end<=fields[0][0] || end!=fields[0][1]) {
        fprintf(stderr, "genprops: syntax error in CaseFolding.txt field 0 at %s\n", fields[0][0]);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* get the status of this mapping */
    caseFoldings[caseFoldingCount].status=status=*u_skipWhitespace(fields[1][0]);
    if(status!='L' && status!='E' && status!='C' && status!='S' && status!='F' && status!='I') {
        fprintf(stderr, "genprops: unrecognized status field in CaseFolding.txt at %s\n", fields[0][0]);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* ignore all case folding mappings that are the same as the UnicodeData.txt lowercase mappings */
    if(status=='L') {
        return;
    }

    /* get the mapping */
    count=caseFoldings[caseFoldingCount].full[0]=
        (UChar)u_parseString(fields[2][0], caseFoldings[caseFoldingCount].full+1, 31, &caseFoldings[caseFoldingCount].simple, pErrorCode);
    if(U_FAILURE(*pErrorCode)) {
        fprintf(stderr, "genprops: error parsing CaseFolding.txt mapping at %s\n", fields[0][0]);
        exit(*pErrorCode);
    }

    /* there is a simple mapping only if there is exactly one code point (count is in UChars) */
    if(count==0 || count>2 || (count==2 && UTF_IS_SINGLE(caseFoldings[caseFoldingCount].full[1]))) {
        caseFoldings[caseFoldingCount].simple=0;
    }

    /* check the status */
    if(status=='S') {
        /* check if there was a full mapping for this code point before */
        if( caseFoldingCount>0 &&
            caseFoldings[caseFoldingCount-1].code==caseFoldings[caseFoldingCount].code &&
            caseFoldings[caseFoldingCount-1].status=='F'
        ) {
            /* merge the two entries */
            caseFoldings[caseFoldingCount-1].simple=caseFoldings[caseFoldingCount].simple;
            return;
        }
    } else if(status=='F') {
        /* check if there was a simple mapping for this code point before */
        if( caseFoldingCount>0 &&
            caseFoldings[caseFoldingCount-1].code==caseFoldings[caseFoldingCount].code &&
            caseFoldings[caseFoldingCount-1].status=='S'
        ) {
            /* merge the two entries */
            uprv_memcpy(caseFoldings[caseFoldingCount-1].full, caseFoldings[caseFoldingCount].full, 32*U_SIZEOF_UCHAR);
            return;
        }
    } else if(status=='I') {
        /* store only a marker for special handling for cases like dotless i */
        caseFoldings[caseFoldingCount].simple=0;
        caseFoldings[caseFoldingCount].full[0]=0;
    }

    /* check that the code points (caseFoldings[caseFoldingCount].code) are in ascending order */
    if(caseFoldings[caseFoldingCount].code<=prevCode && caseFoldings[caseFoldingCount].code>0) {
        fprintf(stderr, "genprops: error - CaseFolding entries out of order, U+%04lx after U+%04lx\n",
                (unsigned long)caseFoldings[caseFoldingCount].code,
                (unsigned long)prevCode);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    prevCode=caseFoldings[caseFoldingCount].code;

    if(++caseFoldingCount==MAX_CASE_FOLDING_COUNT) {
        fprintf(stderr, "genprops: too many case folding mappings\n");
        *pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
        exit(U_INDEX_OUTOFBOUNDS_ERROR);
    }
}

static void
parseCaseFolding(const char *filename, UErrorCode *pErrorCode) {
    char *fields[3][2];

    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return;
    }

    u_parseDelimitedFile(filename, ';', fields, 3, caseFoldingLineFn, NULL, pErrorCode);
}

/* parser for UnicodeData.txt ----------------------------------------------- */

/* general categories */
const char *const
genCategoryNames[U_CHAR_CATEGORY_COUNT]={
    "Cn",
    "Lu", "Ll", "Lt", "Lm", "Lo", "Mn", "Me",
    "Mc", "Nd", "Nl", "No",
    "Zs", "Zl", "Zp",
    "Cc", "Cf", "Co", "Cs",
    "Pd", "Ps", "Pe", "Pc", "Po",
    "Sm", "Sc", "Sk", "So",
    "Pi", "Pf"
};

const char *const
bidiNames[U_CHAR_DIRECTION_COUNT]={
    "L", "R", "EN", "ES", "ET", "AN", "CS", "B", "S",
    "WS", "ON", "LRE", "LRO", "AL", "RLE", "RLO", "PDF", "NSM", "BN"
};

static struct {
    uint32_t first, last, props;
    char name[80];
} unicodeAreas[32];

static int32_t unicodeAreaIndex=0, mirrorIndex=0, specialCasingIndex=0, caseFoldingIndex=0;

static void
unicodeDataLineFn(void *context,
                  char *fields[][2], int32_t fieldCount,
                  UErrorCode *pErrorCode) {
    Props p;
    char *end;
    static uint32_t prevCode=0;
    uint32_t value;
    int32_t i;

    /* reset the properties */
    uprv_memset(&p, 0, sizeof(Props));

    /* get the character code, field 0 */
    p.code=(uint32_t)uprv_strtoul(fields[0][0], &end, 16);
    if(end<=fields[0][0] || end!=fields[0][1]) {
        fprintf(stderr, "genprops: syntax error in field 0 at %s\n", fields[0][0]);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* get general category, field 2 */
    i=getTokenIndex(genCategoryNames, U_CHAR_CATEGORY_COUNT, fields[2][0]);
    if(i>=0) {
        p.generalCategory=(uint8_t)i;
    } else {
        fprintf(stderr, "genprops: unknown general category \"%s\" at code 0x%lx\n",
            fields[2][0], (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* get BiDi category, field 4 */
    i=getTokenIndex(bidiNames, U_CHAR_DIRECTION_COUNT, fields[4][0]);
    if(i>=0) {
        p.bidi=(uint8_t)i;
    } else {
        fprintf(stderr, "genprops: unknown BiDi category \"%s\" at code 0x%lx\n",
            fields[4][0], (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* decimal digit value, field 6 */
    if(fields[6][0]<fields[6][1]) {
        value=(uint32_t)uprv_strtoul(fields[6][0], &end, 10);
        if(end!=fields[6][1] || value>0x7fff) {
            fprintf(stderr, "genprops: syntax error in field 6 at code 0x%lx\n",
                (unsigned long)p.code);
            *pErrorCode=U_PARSE_ERROR;
            exit(U_PARSE_ERROR);
        }
        p.numericValue=(int32_t)value;
        p.numericType=1;
    }

    /* digit value, field 7 */
    if(fields[7][0]<fields[7][1]) {
        value=(uint32_t)uprv_strtoul(fields[7][0], &end, 10);
        if(end!=fields[7][1] || value>0x7fff) {
            fprintf(stderr, "genprops: syntax error in field 7 at code 0x%lx\n",
                (unsigned long)p.code);
            *pErrorCode=U_PARSE_ERROR;
            exit(U_PARSE_ERROR);
        }
        if(p.numericType==0) {
            p.numericValue=(int32_t)value;
            p.numericType=2;
        } else if((int32_t)value!=p.numericValue) {
            fprintf(stderr, "genprops error: numeric values in fields 6 & 7 different at code 0x%lx\n",
                (unsigned long)p.code);
            *pErrorCode=U_PARSE_ERROR;
            exit(U_PARSE_ERROR);
        }
    }

    /* numeric value, field 8 */
    if(fields[8][0]<fields[8][1]) {
        char *s=fields[8][0];
        UBool isNegative;

        /* get a possible minus sign */
        if(*s=='-') {
            isNegative=TRUE;
            ++s;
        } else {
            isNegative=FALSE;
        }

        value=(uint32_t)uprv_strtoul(s, &end, 10);
        if(value>0 && *end=='/') {
            /* field 8 may contain a fractional value, get the denominator */
            if(p.numericType>0) {
                fprintf(stderr, "genprops error: numeric values in fields 6..8 different at code 0x%lx\n",
                    (unsigned long)p.code);
                *pErrorCode=U_PARSE_ERROR;
                exit(U_PARSE_ERROR);
            }

            p.denominator=(uint32_t)uprv_strtoul(end+1, &end, 10);
            if(p.denominator==0) {
                fprintf(stderr, "genprops: denominator is 0 in field 8 at code 0x%lx\n",
                    (unsigned long)p.code);
                *pErrorCode=U_PARSE_ERROR;
                exit(U_PARSE_ERROR);
            }
        }
        if(end!=fields[8][1] || value>0x7fffffff) {
            fprintf(stderr, "genprops: syntax error in field 8 at code 0x%lx\n",
                (unsigned long)p.code);
            *pErrorCode=U_PARSE_ERROR;
            exit(U_PARSE_ERROR);
        }

        if(p.numericType==0) {
            if(isNegative) {
                p.numericValue=-(int32_t)value;
            } else {
                p.numericValue=(int32_t)value;
            }
            p.numericType=3;
        } else if((int32_t)value!=p.numericValue) {
            fprintf(stderr, "genprops error: numeric values in fields 6..8 different at code 0x%lx\n",
                (unsigned long)p.code);
            *pErrorCode=U_PARSE_ERROR;
            exit(U_PARSE_ERROR);
        }
    }

    /* get Mirrored flag, field 9 */
    if(*fields[9][0]=='Y') {
        p.isMirrored=1;
    } else if(fields[9][1]-fields[9][0]!=1 || *fields[9][0]!='N') {
        fprintf(stderr, "genprops: syntax error in field 9 at code 0x%lx\n",
            (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* get uppercase mapping, field 12 */
    value=(uint32_t)uprv_strtoul(fields[12][0], &end, 16);
    if(end!=fields[12][1]) {
        fprintf(stderr, "genprops: syntax error in field 12 at code 0x%lx\n",
            (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    p.upperCase=value;

    /* get lowercase value, field 13 */
    value=(uint32_t)uprv_strtoul(fields[13][0], &end, 16);
    if(end!=fields[13][1]) {
        fprintf(stderr, "genprops: syntax error in field 13 at code 0x%lx\n",
            (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    p.lowerCase=value;

    /* get titlecase value, field 14 */
    value=(uint32_t)uprv_strtoul(fields[14][0], &end, 16);
    if(end!=fields[14][1]) {
        fprintf(stderr, "genprops: syntax error in field 14 at code 0x%lx\n",
            (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    p.titleCase=value;

    /* set additional properties from previously parsed files */
    if(mirrorIndex<mirrorCount && p.code==mirrorMappings[mirrorIndex][0]) {
        p.mirrorMapping=mirrorMappings[mirrorIndex++][1];
    }
    if(specialCasingIndex<specialCasingCount && p.code==specialCasings[specialCasingIndex].code) {
        p.specialCasing=specialCasings+specialCasingIndex++;
    } else {
        p.specialCasing=NULL;
    }
    if(caseFoldingIndex<caseFoldingCount && p.code==caseFoldings[caseFoldingIndex].code) {
        p.caseFolding=caseFoldings+caseFoldingIndex++;

        /* ignore "Common" mappings (simple==full) that map to the same code point as the regular lowercase mapping */
        if( p.caseFolding->status=='C' &&
            p.caseFolding->simple==p.lowerCase
        ) {
            p.caseFolding=NULL;
        }
    } else {
        p.caseFolding=NULL;
    }

    value=makeProps(&p);

    if(*fields[1][0]=='<') {
        /* first or last entry of a Unicode area */
        size_t length=fields[1][1]-fields[1][0];

        if(length<9) {
            /* name too short for an area name */
        } else if(0==uprv_memcmp(", First>", fields[1][1]-8, 8)) {
            /* set the current area */
            if(unicodeAreas[unicodeAreaIndex].first==0xffffffff) {
                length-=9;
                unicodeAreas[unicodeAreaIndex].first=p.code;
                unicodeAreas[unicodeAreaIndex].props=value;
                uprv_memcpy(unicodeAreas[unicodeAreaIndex].name, fields[1][0]+1, length);
                unicodeAreas[unicodeAreaIndex].name[length]=0;
            } else {
                /* error: a previous area is incomplete */
                fprintf(stderr, "genprops: error - area \"%s\" is incomplete\n", unicodeAreas[unicodeAreaIndex].name);
                *pErrorCode=U_PARSE_ERROR;
                exit(U_PARSE_ERROR);
            }
            return;
        } else if(0==uprv_memcmp(", Last>", fields[1][1]-7, 7)) {
            /* check that the current area matches, and complete it with the last code point */
            length-=8;
            if( unicodeAreas[unicodeAreaIndex].props==value &&
                0==uprv_memcmp(unicodeAreas[unicodeAreaIndex].name, fields[1][0]+1, length) &&
                unicodeAreas[unicodeAreaIndex].name[length]==0 &&
                unicodeAreas[unicodeAreaIndex].first<p.code
            ) {
                unicodeAreas[unicodeAreaIndex].last=p.code;
                if(beVerbose) {
                    printf("Unicode area U+%04lx..U+%04lx \"%s\"\n",
                        (unsigned long)unicodeAreas[unicodeAreaIndex].first,
                        (unsigned long)unicodeAreas[unicodeAreaIndex].last,
                        unicodeAreas[unicodeAreaIndex].name);
                }
                unicodeAreas[++unicodeAreaIndex].first=0xffffffff;
            } else {
                /* error: different properties between first & last, different area name, first>=last */
                fprintf(stderr, "genprops: error - Last of area \"%s\" is incorrect\n", unicodeAreas[unicodeAreaIndex].name);
                *pErrorCode=U_PARSE_ERROR;
                exit(U_PARSE_ERROR);
            }
            return;
        } else {
            /* not an area name */
        }
    }

    /* check for non-character code points */
    if((p.code&0xfffe)==0xfffe || (uint32_t)(p.code-0xfdd0)<0x20) {
        fprintf(stderr, "genprops: error - properties for non-character code point U+%04lx\n",
                (unsigned long)p.code);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    /* check that the code points (p.code) are in ascending order */
    if(p.code<=prevCode && p.code>0) {
        fprintf(stderr, "genprops: error - UnicodeData entries out of order, U+%04lx after U+%04lx\n",
                (unsigned long)p.code, (unsigned long)prevCode);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    prevCode=p.code;

    /* properties for a single code point */
    addProps(p.code, value);
}

/* set repeated properties for the areas */
static void
repeatAreaProps() {
    uint32_t puaProps;
    int32_t i;
    UBool hasPlane15PUA, hasPlane16PUA;

    /*
     * UnicodeData.txt before 3.0.1 did not contain the PUAs on
     * planes 15 and 16.
     * If that is the case, then we add them here, using the properties
     * from the BMP PUA.
     */
    puaProps=0;
    hasPlane15PUA=hasPlane16PUA=FALSE;

    for(i=0; i<unicodeAreaIndex; ++i) {
        repeatProps(unicodeAreas[i].first,
                    unicodeAreas[i].last,
                    unicodeAreas[i].props);
        if(unicodeAreas[i].first==0xe000) {
            puaProps=unicodeAreas[i].props;
        } else if(unicodeAreas[i].first==0xf0000) {
            hasPlane15PUA=TRUE;
        } else if(unicodeAreas[i].first==0x100000) {
            hasPlane16PUA=TRUE;
        }
    }

    if(puaProps!=0) {
        if(!hasPlane15PUA) {
            repeatProps(0xf0000, 0xffffd, puaProps);
        }
        if(!hasPlane16PUA) {
            repeatProps(0x100000, 0x10fffd, puaProps);
        }
    }
}

static void
parseDB(const char *filename, UErrorCode *pErrorCode) {
    char *fields[15][2];

    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return;
    }

    /* while unicodeAreas[unicodeAreaIndex] is unused, set its first to a bogus value */
    unicodeAreas[0].first=0xffffffff;

    u_parseDelimitedFile(filename, ';', fields, 15, unicodeDataLineFn, NULL, pErrorCode);

    if(unicodeAreas[unicodeAreaIndex].first!=0xffffffff) {
        fprintf(stderr, "genprops: error - the last area \"%s\" from U+%04lx is incomplete\n",
            unicodeAreas[unicodeAreaIndex].name,
            (unsigned long)unicodeAreas[unicodeAreaIndex].first);
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }

    repeatAreaProps();

    /* are all sub-properties consumed? */
    if(mirrorIndex<mirrorCount) {
        fprintf(stderr, "genprops: error - some code points in BidiMirroring.txt are missing from UnicodeData.txt\n");
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    if(specialCasingIndex<specialCasingCount) {
        fprintf(stderr, "genprops: error - some code points in SpecialCasing.txt are missing from UnicodeData.txt\n");
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
    if(caseFoldingIndex<caseFoldingCount) {
        fprintf(stderr, "genprops: error - some code points in CaseFolding.txt are missing from UnicodeData.txt\n");
        *pErrorCode=U_PARSE_ERROR;
        exit(U_PARSE_ERROR);
    }
}

/*
 * Hey, Emacs, please set the following:
 *
 * Local Variables:
 * indent-tabs-mode: nil
 * End:
 *
 */