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      1 /********************************************************************
      2  * COPYRIGHT:
      3  * Copyright (c) 1997-2010, International Business Machines Corporation and
      4  * others. All Rights Reserved.
      5  ********************************************************************/
      6 
      7 #include "unicode/utypes.h"
      8 
      9 #if !UCONFIG_NO_NORMALIZATION
     10 
     11 #include "unicode/uchar.h"
     12 #include "unicode/errorcode.h"
     13 #include "unicode/normlzr.h"
     14 #include "unicode/uniset.h"
     15 #include "unicode/usetiter.h"
     16 #include "unicode/schriter.h"
     17 #include "cstring.h"
     18 #include "normalizer2impl.h"
     19 #include "tstnorm.h"
     20 
     21 #define LENGTHOF(array) ((int32_t)(sizeof(array)/sizeof((array)[0])))
     22 #define ARRAY_LENGTH(array) LENGTHOF(array)
     23 
     24 #define CASE(id,test) case id:                          \
     25                           name = #test;                 \
     26                           if (exec) {                   \
     27                               logln(#test "---");       \
     28                               logln((UnicodeString)""); \
     29                               test();                   \
     30                           }                             \
     31                           break
     32 
     33 static UErrorCode status = U_ZERO_ERROR;
     34 
     35 void BasicNormalizerTest::runIndexedTest(int32_t index, UBool exec,
     36                                          const char* &name, char* /*par*/) {
     37     switch (index) {
     38         CASE(0,TestDecomp);
     39         CASE(1,TestCompatDecomp);
     40         CASE(2,TestCanonCompose);
     41         CASE(3,TestCompatCompose);
     42         CASE(4,TestPrevious);
     43         CASE(5,TestHangulDecomp);
     44         CASE(6,TestHangulCompose);
     45         CASE(7,TestTibetan);
     46         CASE(8,TestCompositionExclusion);
     47         CASE(9,TestZeroIndex);
     48         CASE(10,TestVerisign);
     49         CASE(11,TestPreviousNext);
     50         CASE(12,TestNormalizerAPI);
     51         CASE(13,TestConcatenate);
     52         CASE(14,FindFoldFCDExceptions);
     53         CASE(15,TestCompare);
     54         CASE(16,TestSkippable);
     55 #if !UCONFIG_NO_FILE_IO && !UCONFIG_NO_LEGACY_CONVERSION
     56         CASE(17,TestCustomComp);
     57         CASE(18,TestCustomFCC);
     58 #endif
     59         CASE(19,TestFilteredNormalizer2Coverage);
     60         default: name = ""; break;
     61     }
     62 }
     63 
     64 /**
     65  * Convert Java-style strings with \u Unicode escapes into UnicodeString objects
     66  */
     67 static UnicodeString str(const char *input)
     68 {
     69     UnicodeString str(input, ""); // Invariant conversion
     70     return str.unescape();
     71 }
     72 
     73 
     74 BasicNormalizerTest::BasicNormalizerTest()
     75 {
     76   // canonTest
     77   // Input                    Decomposed                    Composed
     78 
     79     canonTests[0][0] = str("cat");  canonTests[0][1] = str("cat"); canonTests[0][2] =  str("cat");
     80 
     81     canonTests[1][0] = str("\\u00e0ardvark");    canonTests[1][1] = str("a\\u0300ardvark");  canonTests[1][2] = str("\\u00e0ardvark");
     82 
     83     canonTests[2][0] = str("\\u1e0a"); canonTests[2][1] = str("D\\u0307"); canonTests[2][2] = str("\\u1e0a");                 // D-dot_above
     84 
     85     canonTests[3][0] = str("D\\u0307");  canonTests[3][1] = str("D\\u0307"); canonTests[3][2] = str("\\u1e0a");            // D dot_above
     86 
     87     canonTests[4][0] = str("\\u1e0c\\u0307"); canonTests[4][1] = str("D\\u0323\\u0307");  canonTests[4][2] = str("\\u1e0c\\u0307");         // D-dot_below dot_above
     88 
     89     canonTests[5][0] = str("\\u1e0a\\u0323"); canonTests[5][1] = str("D\\u0323\\u0307");  canonTests[5][2] = str("\\u1e0c\\u0307");        // D-dot_above dot_below
     90 
     91     canonTests[6][0] = str("D\\u0307\\u0323"); canonTests[6][1] = str("D\\u0323\\u0307");  canonTests[6][2] = str("\\u1e0c\\u0307");         // D dot_below dot_above
     92 
     93     canonTests[7][0] = str("\\u1e10\\u0307\\u0323");  canonTests[7][1] = str("D\\u0327\\u0323\\u0307"); canonTests[7][2] = str("\\u1e10\\u0323\\u0307");     // D dot_below cedilla dot_above
     94 
     95     canonTests[8][0] = str("D\\u0307\\u0328\\u0323"); canonTests[8][1] = str("D\\u0328\\u0323\\u0307"); canonTests[8][2] = str("\\u1e0c\\u0328\\u0307");     // D dot_above ogonek dot_below
     96 
     97     canonTests[9][0] = str("\\u1E14"); canonTests[9][1] = str("E\\u0304\\u0300"); canonTests[9][2] = str("\\u1E14");         // E-macron-grave
     98 
     99     canonTests[10][0] = str("\\u0112\\u0300"); canonTests[10][1] = str("E\\u0304\\u0300");  canonTests[10][2] = str("\\u1E14");            // E-macron + grave
    100 
    101     canonTests[11][0] = str("\\u00c8\\u0304"); canonTests[11][1] = str("E\\u0300\\u0304");  canonTests[11][2] = str("\\u00c8\\u0304");         // E-grave + macron
    102 
    103     canonTests[12][0] = str("\\u212b"); canonTests[12][1] = str("A\\u030a"); canonTests[12][2] = str("\\u00c5");             // angstrom_sign
    104 
    105     canonTests[13][0] = str("\\u00c5");      canonTests[13][1] = str("A\\u030a");  canonTests[13][2] = str("\\u00c5");            // A-ring
    106 
    107     canonTests[14][0] = str("\\u00C4ffin");  canonTests[14][1] = str("A\\u0308ffin");  canonTests[14][2] = str("\\u00C4ffin");
    108 
    109     canonTests[15][0] = str("\\u00C4\\uFB03n"); canonTests[15][1] = str("A\\u0308\\uFB03n"); canonTests[15][2] = str("\\u00C4\\uFB03n");
    110 
    111     canonTests[16][0] = str("Henry IV"); canonTests[16][1] = str("Henry IV"); canonTests[16][2] = str("Henry IV");
    112 
    113     canonTests[17][0] = str("Henry \\u2163");  canonTests[17][1] = str("Henry \\u2163");  canonTests[17][2] = str("Henry \\u2163");
    114 
    115     canonTests[18][0] = str("\\u30AC");  canonTests[18][1] = str("\\u30AB\\u3099");  canonTests[18][2] = str("\\u30AC");              // ga (Katakana)
    116 
    117     canonTests[19][0] = str("\\u30AB\\u3099"); canonTests[19][1] = str("\\u30AB\\u3099");  canonTests[19][2] = str("\\u30AC");            // ka + ten
    118 
    119     canonTests[20][0] = str("\\uFF76\\uFF9E"); canonTests[20][1] = str("\\uFF76\\uFF9E");  canonTests[20][2] = str("\\uFF76\\uFF9E");       // hw_ka + hw_ten
    120 
    121     canonTests[21][0] = str("\\u30AB\\uFF9E"); canonTests[21][1] = str("\\u30AB\\uFF9E");  canonTests[21][2] = str("\\u30AB\\uFF9E");         // ka + hw_ten
    122 
    123     canonTests[22][0] = str("\\uFF76\\u3099"); canonTests[22][1] = str("\\uFF76\\u3099");  canonTests[22][2] = str("\\uFF76\\u3099");         // hw_ka + ten
    124 
    125     canonTests[23][0] = str("A\\u0300\\u0316"); canonTests[23][1] = str("A\\u0316\\u0300");  canonTests[23][2] = str("\\u00C0\\u0316");
    126 
    127     /* compatTest */
    128   // Input                        Decomposed                        Composed
    129   compatTests[0][0] = str("cat"); compatTests[0][1] = str("cat"); compatTests[0][2] = str("cat") ;
    130 
    131   compatTests[1][0] = str("\\uFB4f");  compatTests[1][1] = str("\\u05D0\\u05DC"); compatTests[1][2] = str("\\u05D0\\u05DC");  // Alef-Lamed vs. Alef, Lamed
    132 
    133   compatTests[2][0] = str("\\u00C4ffin"); compatTests[2][1] = str("A\\u0308ffin"); compatTests[2][2] = str("\\u00C4ffin") ;
    134 
    135   compatTests[3][0] = str("\\u00C4\\uFB03n"); compatTests[3][1] = str("A\\u0308ffin"); compatTests[3][2] = str("\\u00C4ffin") ; // ffi ligature -> f + f + i
    136 
    137   compatTests[4][0] = str("Henry IV"); compatTests[4][1] = str("Henry IV"); compatTests[4][2] = str("Henry IV") ;
    138 
    139   compatTests[5][0] = str("Henry \\u2163"); compatTests[5][1] = str("Henry IV");  compatTests[5][2] = str("Henry IV") ;
    140 
    141   compatTests[6][0] = str("\\u30AC"); compatTests[6][1] = str("\\u30AB\\u3099"); compatTests[6][2] = str("\\u30AC") ; // ga (Katakana)
    142 
    143   compatTests[7][0] = str("\\u30AB\\u3099"); compatTests[7][1] = str("\\u30AB\\u3099"); compatTests[7][2] = str("\\u30AC") ; // ka + ten
    144 
    145   compatTests[8][0] = str("\\uFF76\\u3099"); compatTests[8][1] = str("\\u30AB\\u3099"); compatTests[8][2] = str("\\u30AC") ; // hw_ka + ten
    146 
    147   /* These two are broken in Unicode 2.1.2 but fixed in 2.1.5 and later */
    148   compatTests[9][0] = str("\\uFF76\\uFF9E"); compatTests[9][1] = str("\\u30AB\\u3099"); compatTests[9][2] = str("\\u30AC") ; // hw_ka + hw_ten
    149 
    150   compatTests[10][0] = str("\\u30AB\\uFF9E"); compatTests[10][1] = str("\\u30AB\\u3099"); compatTests[10][2] = str("\\u30AC") ; // ka + hw_ten
    151 
    152   /* Hangul Canonical */
    153   // Input                        Decomposed                        Composed
    154   hangulCanon[0][0] = str("\\ud4db"); hangulCanon[0][1] = str("\\u1111\\u1171\\u11b6"); hangulCanon[0][2] = str("\\ud4db") ;
    155 
    156   hangulCanon[1][0] = str("\\u1111\\u1171\\u11b6"), hangulCanon[1][1] = str("\\u1111\\u1171\\u11b6"),   hangulCanon[1][2] = str("\\ud4db");
    157 }
    158 
    159 BasicNormalizerTest::~BasicNormalizerTest()
    160 {
    161 }
    162 
    163 void BasicNormalizerTest::TestPrevious()
    164 {
    165   Normalizer* norm = new Normalizer("", UNORM_NFD);
    166 
    167   logln("testing decomp...");
    168   uint32_t i;
    169   for (i = 0; i < ARRAY_LENGTH(canonTests); i++) {
    170     backAndForth(norm, canonTests[i][0]);
    171   }
    172 
    173   logln("testing compose...");
    174   norm->setMode(UNORM_NFC);
    175   for (i = 0; i < ARRAY_LENGTH(canonTests); i++) {
    176     backAndForth(norm, canonTests[i][0]);
    177   }
    178 
    179   delete norm;
    180 }
    181 
    182 void BasicNormalizerTest::TestDecomp()
    183 {
    184   Normalizer* norm = new Normalizer("", UNORM_NFD);
    185   iterateTest(norm, canonTests, ARRAY_LENGTH(canonTests), 1);
    186   staticTest(UNORM_NFD, 0, canonTests, ARRAY_LENGTH(canonTests), 1);
    187   delete norm;
    188 }
    189 
    190 void BasicNormalizerTest::TestCompatDecomp()
    191 {
    192   Normalizer* norm = new Normalizer("", UNORM_NFKD);
    193   iterateTest(norm, compatTests, ARRAY_LENGTH(compatTests), 1);
    194 
    195   staticTest(UNORM_NFKD, 0,
    196          compatTests, ARRAY_LENGTH(compatTests), 1);
    197   delete norm;
    198 }
    199 
    200 void BasicNormalizerTest::TestCanonCompose()
    201 {
    202   Normalizer* norm = new Normalizer("", UNORM_NFC);
    203   iterateTest(norm, canonTests, ARRAY_LENGTH(canonTests), 2);
    204 
    205   staticTest(UNORM_NFC, 0, canonTests,
    206          ARRAY_LENGTH(canonTests), 2);
    207   delete norm;
    208 }
    209 
    210 void BasicNormalizerTest::TestCompatCompose()
    211 {
    212   Normalizer* norm = new Normalizer("", UNORM_NFKC);
    213   iterateTest(norm, compatTests, ARRAY_LENGTH(compatTests), 2);
    214 
    215   staticTest(UNORM_NFKC, 0,
    216          compatTests, ARRAY_LENGTH(compatTests), 2);
    217   delete norm;
    218 }
    219 
    220 
    221 //-------------------------------------------------------------------------------
    222 
    223 void BasicNormalizerTest::TestHangulCompose()
    224 {
    225   // Make sure that the static composition methods work
    226   logln("Canonical composition...");
    227   staticTest(UNORM_NFC, 0,                    hangulCanon,  ARRAY_LENGTH(hangulCanon),  2);
    228   logln("Compatibility composition...");
    229 
    230   // Now try iterative composition....
    231   logln("Static composition...");
    232   Normalizer* norm = new Normalizer("", UNORM_NFC);
    233   iterateTest(norm, hangulCanon, ARRAY_LENGTH(hangulCanon), 2);
    234   norm->setMode(UNORM_NFKC);
    235 
    236   // And finally, make sure you can do it in reverse too
    237   logln("Reverse iteration...");
    238   norm->setMode(UNORM_NFC);
    239   for (uint32_t i = 0; i < ARRAY_LENGTH(hangulCanon); i++) {
    240     backAndForth(norm, hangulCanon[i][0]);
    241   }
    242   delete norm;
    243 }
    244 
    245 void BasicNormalizerTest::TestHangulDecomp()
    246 {
    247   // Make sure that the static decomposition methods work
    248   logln("Canonical decomposition...");
    249   staticTest(UNORM_NFD, 0,                     hangulCanon,  ARRAY_LENGTH(hangulCanon),  1);
    250   logln("Compatibility decomposition...");
    251 
    252   // Now the iterative decomposition methods...
    253   logln("Iterative decomposition...");
    254   Normalizer* norm = new Normalizer("", UNORM_NFD);
    255   iterateTest(norm, hangulCanon, ARRAY_LENGTH(hangulCanon), 1);
    256   norm->setMode(UNORM_NFKD);
    257 
    258   // And finally, make sure you can do it in reverse too
    259   logln("Reverse iteration...");
    260   norm->setMode(UNORM_NFD);
    261   for (uint32_t i = 0; i < ARRAY_LENGTH(hangulCanon); i++) {
    262     backAndForth(norm, hangulCanon[i][0]);
    263   }
    264   delete norm;
    265 }
    266 
    267 /**
    268  * The Tibetan vowel sign AA, 0f71, was messed up prior to Unicode version 2.1.9.
    269  */
    270 void BasicNormalizerTest::TestTibetan(void) {
    271     UnicodeString decomp[1][3];
    272     decomp[0][0] = str("\\u0f77");
    273     decomp[0][1] = str("\\u0f77");
    274     decomp[0][2] = str("\\u0fb2\\u0f71\\u0f80");
    275 
    276     UnicodeString compose[1][3];
    277     compose[0][0] = str("\\u0fb2\\u0f71\\u0f80");
    278     compose[0][1] = str("\\u0fb2\\u0f71\\u0f80");
    279     compose[0][2] = str("\\u0fb2\\u0f71\\u0f80");
    280 
    281     staticTest(UNORM_NFD,         0, decomp, ARRAY_LENGTH(decomp), 1);
    282     staticTest(UNORM_NFKD,  0, decomp, ARRAY_LENGTH(decomp), 2);
    283     staticTest(UNORM_NFC,        0, compose, ARRAY_LENGTH(compose), 1);
    284     staticTest(UNORM_NFKC, 0, compose, ARRAY_LENGTH(compose), 2);
    285 }
    286 
    287 /**
    288  * Make sure characters in the CompositionExclusion.txt list do not get
    289  * composed to.
    290  */
    291 void BasicNormalizerTest::TestCompositionExclusion(void) {
    292     // This list is generated from CompositionExclusion.txt.
    293     // Update whenever the normalizer tables are updated.  Note
    294     // that we test all characters listed, even those that can be
    295     // derived from the Unicode DB and are therefore commented
    296     // out.
    297     // ### TODO read composition exclusion from source/data/unidata file
    298     // and test against that
    299     UnicodeString EXCLUDED = str(
    300         "\\u0340\\u0341\\u0343\\u0344\\u0374\\u037E\\u0387\\u0958"
    301         "\\u0959\\u095A\\u095B\\u095C\\u095D\\u095E\\u095F\\u09DC"
    302         "\\u09DD\\u09DF\\u0A33\\u0A36\\u0A59\\u0A5A\\u0A5B\\u0A5E"
    303         "\\u0B5C\\u0B5D\\u0F43\\u0F4D\\u0F52\\u0F57\\u0F5C\\u0F69"
    304         "\\u0F73\\u0F75\\u0F76\\u0F78\\u0F81\\u0F93\\u0F9D\\u0FA2"
    305         "\\u0FA7\\u0FAC\\u0FB9\\u1F71\\u1F73\\u1F75\\u1F77\\u1F79"
    306         "\\u1F7B\\u1F7D\\u1FBB\\u1FBE\\u1FC9\\u1FCB\\u1FD3\\u1FDB"
    307         "\\u1FE3\\u1FEB\\u1FEE\\u1FEF\\u1FF9\\u1FFB\\u1FFD\\u2000"
    308         "\\u2001\\u2126\\u212A\\u212B\\u2329\\u232A\\uF900\\uFA10"
    309         "\\uFA12\\uFA15\\uFA20\\uFA22\\uFA25\\uFA26\\uFA2A\\uFB1F"
    310         "\\uFB2A\\uFB2B\\uFB2C\\uFB2D\\uFB2E\\uFB2F\\uFB30\\uFB31"
    311         "\\uFB32\\uFB33\\uFB34\\uFB35\\uFB36\\uFB38\\uFB39\\uFB3A"
    312         "\\uFB3B\\uFB3C\\uFB3E\\uFB40\\uFB41\\uFB43\\uFB44\\uFB46"
    313         "\\uFB47\\uFB48\\uFB49\\uFB4A\\uFB4B\\uFB4C\\uFB4D\\uFB4E"
    314         );
    315     for (int32_t i=0; i<EXCLUDED.length(); ++i) {
    316         UnicodeString a(EXCLUDED.charAt(i));
    317         UnicodeString b;
    318         UnicodeString c;
    319         Normalizer::normalize(a, UNORM_NFKD, 0, b, status);
    320         Normalizer::normalize(b, UNORM_NFC, 0, c, status);
    321         if (c == a) {
    322             errln("FAIL: " + hex(a) + " x DECOMP_COMPAT => " +
    323                   hex(b) + " x COMPOSE => " +
    324                   hex(c));
    325         } else if (verbose) {
    326             logln("Ok: " + hex(a) + " x DECOMP_COMPAT => " +
    327                   hex(b) + " x COMPOSE => " +
    328                   hex(c));
    329         }
    330     }
    331 }
    332 
    333 /**
    334  * Test for a problem that showed up just before ICU 1.6 release
    335  * having to do with combining characters with an index of zero.
    336  * Such characters do not participate in any canonical
    337  * decompositions.  However, having an index of zero means that
    338  * they all share one typeMask[] entry, that is, they all have to
    339  * map to the same canonical class, which is not the case, in
    340  * reality.
    341  */
    342 void BasicNormalizerTest::TestZeroIndex(void) {
    343     const char* DATA[] = {
    344         // Expect col1 x COMPOSE_COMPAT => col2
    345         // Expect col2 x DECOMP => col3
    346         "A\\u0316\\u0300", "\\u00C0\\u0316", "A\\u0316\\u0300",
    347         "A\\u0300\\u0316", "\\u00C0\\u0316", "A\\u0316\\u0300",
    348         "A\\u0327\\u0300", "\\u00C0\\u0327", "A\\u0327\\u0300",
    349         "c\\u0321\\u0327", "c\\u0321\\u0327", "c\\u0321\\u0327",
    350         "c\\u0327\\u0321", "\\u00E7\\u0321", "c\\u0327\\u0321",
    351     };
    352     int32_t DATA_length = (int32_t)(sizeof(DATA) / sizeof(DATA[0]));
    353 
    354     for (int32_t i=0; i<DATA_length; i+=3) {
    355         UErrorCode status = U_ZERO_ERROR;
    356         UnicodeString a(DATA[i], "");
    357         a = a.unescape();
    358         UnicodeString b;
    359         Normalizer::normalize(a, UNORM_NFKC, 0, b, status);
    360         if (U_FAILURE(status)) {
    361             dataerrln("Error calling normalize UNORM_NFKC: %s", u_errorName(status));
    362         } else {
    363             UnicodeString exp(DATA[i+1], "");
    364             exp = exp.unescape();
    365             if (b == exp) {
    366                 logln((UnicodeString)"Ok: " + hex(a) + " x COMPOSE_COMPAT => " + hex(b));
    367             } else {
    368                 errln((UnicodeString)"FAIL: " + hex(a) + " x COMPOSE_COMPAT => " + hex(b) +
    369                       ", expect " + hex(exp));
    370             }
    371         }
    372         Normalizer::normalize(b, UNORM_NFD, 0, a, status);
    373         if (U_FAILURE(status)) {
    374             dataerrln("Error calling normalize UNORM_NFD: %s", u_errorName(status));
    375         } else {
    376             UnicodeString exp = UnicodeString(DATA[i+2], "").unescape();
    377             if (a == exp) {
    378                 logln((UnicodeString)"Ok: " + hex(b) + " x DECOMP => " + hex(a));
    379             } else {
    380                 errln((UnicodeString)"FAIL: " + hex(b) + " x DECOMP => " + hex(a) +
    381                       ", expect " + hex(exp));
    382             }
    383         }
    384     }
    385 }
    386 
    387 /**
    388  * Run a few specific cases that are failing for Verisign.
    389  */
    390 void BasicNormalizerTest::TestVerisign(void) {
    391     /*
    392       > Their input:
    393       > 05B8 05B9 05B1 0591 05C3 05B0 05AC 059F
    394       > Their output (supposedly from ICU):
    395       > 05B8 05B1 05B9 0591 05C3 05B0 05AC 059F
    396       > My output from charlint:
    397       > 05B1 05B8 05B9 0591 05C3 05B0 05AC 059F
    398 
    399       05B8 05B9 05B1 0591 05C3 05B0 05AC 059F => 05B1 05B8 05B9 0591 05C3 05B0
    400       05AC 059F
    401 
    402       U+05B8  18  E HEBREW POINT QAMATS
    403       U+05B9  19  F HEBREW POINT HOLAM
    404       U+05B1  11 HEBREW POINT HATAF SEGOL
    405       U+0591 220 HEBREW ACCENT ETNAHTA
    406       U+05C3   0 HEBREW PUNCTUATION SOF PASUQ
    407       U+05B0  10 HEBREW POINT SHEVA
    408       U+05AC 230 HEBREW ACCENT ILUY
    409       U+059F 230 HEBREW ACCENT QARNEY PARA
    410 
    411       U+05B1  11 HEBREW POINT HATAF SEGOL
    412       U+05B8  18 HEBREW POINT QAMATS
    413       U+05B9  19 HEBREW POINT HOLAM
    414       U+0591 220 HEBREW ACCENT ETNAHTA
    415       U+05C3   0 HEBREW PUNCTUATION SOF PASUQ
    416       U+05B0  10 HEBREW POINT SHEVA
    417       U+05AC 230 HEBREW ACCENT ILUY
    418       U+059F 230 HEBREW ACCENT QARNEY PARA
    419 
    420       Wrong result:
    421       U+05B8  18 HEBREW POINT QAMATS
    422       U+05B1  11 HEBREW POINT HATAF SEGOL
    423       U+05B9  19 HEBREW POINT HOLAM
    424       U+0591 220 HEBREW ACCENT ETNAHTA
    425       U+05C3   0 HEBREW PUNCTUATION SOF PASUQ
    426       U+05B0  10 HEBREW POINT SHEVA
    427       U+05AC 230 HEBREW ACCENT ILUY
    428       U+059F 230 HEBREW ACCENT QARNEY PARA
    429 
    430 
    431       > Their input:
    432       >0592 05B7 05BC 05A5 05B0 05C0 05C4 05AD
    433       >Their output (supposedly from ICU):
    434       >0592 05B0 05B7 05BC 05A5 05C0 05AD 05C4
    435       >My output from charlint:
    436       >05B0 05B7 05BC 05A5 0592 05C0 05AD 05C4
    437 
    438       0592 05B7 05BC 05A5 05B0 05C0 05C4 05AD => 05B0 05B7 05BC 05A5 0592 05C0
    439       05AD 05C4
    440 
    441       U+0592 230 HEBREW ACCENT SEGOL
    442       U+05B7  17 HEBREW POINT PATAH
    443       U+05BC  21 HEBREW POINT DAGESH OR MAPIQ
    444       U+05A5 220 HEBREW ACCENT MERKHA
    445       U+05B0  10 HEBREW POINT SHEVA
    446       U+05C0   0 HEBREW PUNCTUATION PASEQ
    447       U+05C4 230 HEBREW MARK UPPER DOT
    448       U+05AD 222 HEBREW ACCENT DEHI
    449 
    450       U+05B0  10 HEBREW POINT SHEVA
    451       U+05B7  17 HEBREW POINT PATAH
    452       U+05BC  21 HEBREW POINT DAGESH OR MAPIQ
    453       U+05A5 220 HEBREW ACCENT MERKHA
    454       U+0592 230 HEBREW ACCENT SEGOL
    455       U+05C0   0 HEBREW PUNCTUATION PASEQ
    456       U+05AD 222 HEBREW ACCENT DEHI
    457       U+05C4 230 HEBREW MARK UPPER DOT
    458 
    459       Wrong result:
    460       U+0592 230 HEBREW ACCENT SEGOL
    461       U+05B0  10 HEBREW POINT SHEVA
    462       U+05B7  17 HEBREW POINT PATAH
    463       U+05BC  21 HEBREW POINT DAGESH OR MAPIQ
    464       U+05A5 220 HEBREW ACCENT MERKHA
    465       U+05C0   0 HEBREW PUNCTUATION PASEQ
    466       U+05AD 222 HEBREW ACCENT DEHI
    467       U+05C4 230 HEBREW MARK UPPER DOT
    468     */
    469     UnicodeString data[2][3];
    470     data[0][0] = str("\\u05B8\\u05B9\\u05B1\\u0591\\u05C3\\u05B0\\u05AC\\u059F");
    471     data[0][1] = str("\\u05B1\\u05B8\\u05B9\\u0591\\u05C3\\u05B0\\u05AC\\u059F");
    472     data[0][2] = str("");
    473     data[1][0] = str("\\u0592\\u05B7\\u05BC\\u05A5\\u05B0\\u05C0\\u05C4\\u05AD");
    474     data[1][1] = str("\\u05B0\\u05B7\\u05BC\\u05A5\\u0592\\u05C0\\u05AD\\u05C4");
    475     data[1][2] = str("");
    476 
    477     staticTest(UNORM_NFD, 0, data, ARRAY_LENGTH(data), 1);
    478     staticTest(UNORM_NFC, 0, data, ARRAY_LENGTH(data), 1);
    479 }
    480 
    481 //------------------------------------------------------------------------
    482 // Internal utilities
    483 //
    484 
    485 UnicodeString BasicNormalizerTest::hex(UChar ch) {
    486     UnicodeString result;
    487     return appendHex(ch, 4, result);
    488 }
    489 
    490 UnicodeString BasicNormalizerTest::hex(const UnicodeString& s) {
    491     UnicodeString result;
    492     for (int i = 0; i < s.length(); ++i) {
    493         if (i != 0) result += (UChar)0x2c/*,*/;
    494         appendHex(s[i], 4, result);
    495     }
    496     return result;
    497 }
    498 
    499 
    500 inline static void insert(UnicodeString& dest, int pos, UChar32 ch)
    501 {
    502     dest.replace(pos, 0, ch);
    503 }
    504 
    505 void BasicNormalizerTest::backAndForth(Normalizer* iter, const UnicodeString& input)
    506 {
    507     UChar32 ch;
    508     iter->setText(input, status);
    509 
    510     // Run through the iterator forwards and stick it into a StringBuffer
    511     UnicodeString forward;
    512     for (ch = iter->first(); ch != iter->DONE; ch = iter->next()) {
    513         forward += ch;
    514     }
    515 
    516     // Now do it backwards
    517     UnicodeString reverse;
    518     for (ch = iter->last(); ch != iter->DONE; ch = iter->previous()) {
    519         insert(reverse, 0, ch);
    520     }
    521 
    522     if (forward != reverse) {
    523         errln("Forward/reverse mismatch for input " + hex(input)
    524               + ", forward: " + hex(forward) + ", backward: " + hex(reverse));
    525     }
    526 }
    527 
    528 void BasicNormalizerTest::staticTest(UNormalizationMode mode, int options,
    529                      UnicodeString tests[][3], int length,
    530                      int outCol)
    531 {
    532     for (int i = 0; i < length; i++)
    533     {
    534         UnicodeString& input = tests[i][0];
    535         UnicodeString& expect = tests[i][outCol];
    536 
    537         logln("Normalizing '" + input + "' (" + hex(input) + ")" );
    538 
    539         UnicodeString output;
    540         Normalizer::normalize(input, mode, options, output, status);
    541 
    542         if (output != expect) {
    543             dataerrln(UnicodeString("ERROR: case ") + i + " normalized " + hex(input) + "\n"
    544                 + "                expected " + hex(expect) + "\n"
    545                 + "              static got " + hex(output) );
    546         }
    547     }
    548 }
    549 
    550 void BasicNormalizerTest::iterateTest(Normalizer* iter,
    551                                       UnicodeString tests[][3], int length,
    552                                       int outCol)
    553 {
    554     for (int i = 0; i < length; i++)
    555     {
    556         UnicodeString& input = tests[i][0];
    557         UnicodeString& expect = tests[i][outCol];
    558 
    559         logln("Normalizing '" + input + "' (" + hex(input) + ")" );
    560 
    561         iter->setText(input, status);
    562         assertEqual(input, expect, iter, UnicodeString("ERROR: case ") + i + " ");
    563     }
    564 }
    565 
    566 void BasicNormalizerTest::assertEqual(const UnicodeString&    input,
    567                       const UnicodeString&    expected,
    568                       Normalizer*        iter,
    569                       const UnicodeString&    errPrefix)
    570 {
    571     UnicodeString result;
    572 
    573     for (UChar32 ch = iter->first(); ch != iter->DONE; ch = iter->next()) {
    574         result += ch;
    575     }
    576     if (result != expected) {
    577         dataerrln(errPrefix + "normalized " + hex(input) + "\n"
    578             + "                expected " + hex(expected) + "\n"
    579             + "             iterate got " + hex(result) );
    580     }
    581 }
    582 
    583 // helper class for TestPreviousNext()
    584 // simple UTF-32 character iterator
    585 class UChar32Iterator {
    586 public:
    587     UChar32Iterator(const UChar32 *text, int32_t len, int32_t index) :
    588         s(text), length(len), i(index) {}
    589 
    590     UChar32 current() {
    591         if(i<length) {
    592             return s[i];
    593         } else {
    594             return 0xffff;
    595         }
    596     }
    597 
    598     UChar32 next() {
    599         if(i<length) {
    600             return s[i++];
    601         } else {
    602             return 0xffff;
    603         }
    604     }
    605 
    606     UChar32 previous() {
    607         if(i>0) {
    608             return s[--i];
    609         } else {
    610             return 0xffff;
    611         }
    612     }
    613 
    614     int32_t getIndex() {
    615         return i;
    616     }
    617 private:
    618     const UChar32 *s;
    619     int32_t length, i;
    620 };
    621 
    622 void
    623 BasicNormalizerTest::TestPreviousNext(const UChar *src, int32_t srcLength,
    624                                       const UChar32 *expect, int32_t expectLength,
    625                                       const int32_t *expectIndex, // its length=expectLength+1
    626                                       int32_t srcMiddle, int32_t expectMiddle,
    627                                       const char *moves,
    628                                       UNormalizationMode mode,
    629                                       const char *name) {
    630     // iterators
    631     Normalizer iter(src, srcLength, mode);
    632 
    633     // test getStaticClassID and getDynamicClassID
    634     if(iter.getDynamicClassID() != Normalizer::getStaticClassID()) {
    635         errln("getStaticClassID != getDynamicClassID for Normalizer.");
    636     }
    637 
    638     UChar32Iterator iter32(expect, expectLength, expectMiddle);
    639 
    640     UChar32 c1, c2;
    641     char m;
    642 
    643     // initially set the indexes into the middle of the strings
    644     iter.setIndexOnly(srcMiddle);
    645 
    646     // move around and compare the iteration code points with
    647     // the expected ones
    648     const char *move=moves;
    649     while((m=*move++)!=0) {
    650         if(m=='-') {
    651             c1=iter.previous();
    652             c2=iter32.previous();
    653         } else if(m=='0') {
    654             c1=iter.current();
    655             c2=iter32.current();
    656         } else /* m=='+' */ {
    657             c1=iter.next();
    658             c2=iter32.next();
    659         }
    660 
    661         // compare results
    662         if(c1!=c2) {
    663             // copy the moves until the current (m) move, and terminate
    664             char history[64];
    665             uprv_strcpy(history, moves);
    666             history[move-moves]=0;
    667             dataerrln("error: mismatch in Normalizer iteration (%s) at %s: "
    668                   "got c1=U+%04lx != expected c2=U+%04lx",
    669                   name, history, c1, c2);
    670             break;
    671         }
    672 
    673         // compare indexes
    674         if(iter.getIndex()!=expectIndex[iter32.getIndex()]) {
    675             // copy the moves until the current (m) move, and terminate
    676             char history[64];
    677             uprv_strcpy(history, moves);
    678             history[move-moves]=0;
    679             errln("error: index mismatch in Normalizer iteration (%s) at %s: "
    680                   "Normalizer index %ld expected %ld\n",
    681                   name, history, iter.getIndex(), expectIndex[iter32.getIndex()]);
    682             break;
    683         }
    684     }
    685 }
    686 
    687 void
    688 BasicNormalizerTest::TestPreviousNext() {
    689     // src and expect strings
    690     static const UChar src[]={
    691         UTF16_LEAD(0x2f999), UTF16_TRAIL(0x2f999),
    692         UTF16_LEAD(0x1d15f), UTF16_TRAIL(0x1d15f),
    693         0xc4,
    694         0x1ed0
    695     };
    696     static const UChar32 expect[]={
    697         0x831d,
    698         0x1d158, 0x1d165,
    699         0x41, 0x308,
    700         0x4f, 0x302, 0x301
    701     };
    702 
    703     // expected src indexes corresponding to expect indexes
    704     static const int32_t expectIndex[]={
    705         0,
    706         2, 2,
    707         4, 4,
    708         5, 5, 5,
    709         6 // behind last character
    710     };
    711 
    712     // src and expect strings for regression test for j2911
    713     static const UChar src_j2911[]={
    714         UTF16_LEAD(0x2f999), UTF16_TRAIL(0x2f999),
    715         0xdd00, 0xd900, // unpaired surrogates - regression test for j2911
    716         0xc4,
    717         0x4f, 0x302, 0x301
    718     };
    719     static const UChar32 expect_j2911[]={
    720         0x831d,
    721         0xdd00, 0xd900, // unpaired surrogates - regression test for j2911
    722         0xc4,
    723         0x1ed0
    724     };
    725 
    726     // expected src indexes corresponding to expect indexes
    727     static const int32_t expectIndex_j2911[]={
    728         0,
    729         2, 3,
    730         4,
    731         5,
    732         8 // behind last character
    733     };
    734 
    735     // initial indexes into the src and expect strings
    736     // for both sets of test data
    737     enum {
    738         SRC_MIDDLE=4,
    739         EXPECT_MIDDLE=3,
    740         SRC_MIDDLE_2=2,
    741         EXPECT_MIDDLE_2=1
    742     };
    743 
    744     // movement vector
    745     // - for previous(), 0 for current(), + for next()
    746     // for both sets of test data
    747     static const char *const moves="0+0+0--0-0-+++0--+++++++0--------";
    748 
    749     TestPreviousNext(src, LENGTHOF(src),
    750                      expect, LENGTHOF(expect),
    751                      expectIndex,
    752                      SRC_MIDDLE, EXPECT_MIDDLE,
    753                      moves, UNORM_NFD, "basic");
    754 
    755     TestPreviousNext(src_j2911, LENGTHOF(src_j2911),
    756                      expect_j2911, LENGTHOF(expect_j2911),
    757                      expectIndex_j2911,
    758                      SRC_MIDDLE, EXPECT_MIDDLE,
    759                      moves, UNORM_NFKC, "j2911");
    760 
    761     // try again from different "middle" indexes
    762     TestPreviousNext(src, LENGTHOF(src),
    763                      expect, LENGTHOF(expect),
    764                      expectIndex,
    765                      SRC_MIDDLE_2, EXPECT_MIDDLE_2,
    766                      moves, UNORM_NFD, "basic_2");
    767 
    768     TestPreviousNext(src_j2911, LENGTHOF(src_j2911),
    769                      expect_j2911, LENGTHOF(expect_j2911),
    770                      expectIndex_j2911,
    771                      SRC_MIDDLE_2, EXPECT_MIDDLE_2,
    772                      moves, UNORM_NFKC, "j2911_2");
    773 }
    774 
    775 void BasicNormalizerTest::TestConcatenate() {
    776     static const char *const
    777     cases[][4]={
    778         /* mode, left, right, result */
    779         {
    780             "C",
    781             "re",
    782             "\\u0301sum\\u00e9",
    783             "r\\u00e9sum\\u00e9"
    784         },
    785         {
    786             "C",
    787             "a\\u1100",
    788             "\\u1161bcdefghijk",
    789             "a\\uac00bcdefghijk"
    790         },
    791         /* ### TODO: add more interesting cases */
    792         {
    793             "D",
    794             "\\u03B1\\u0345",
    795             "\\u0C4D\\U000110BA\\U0001D169",
    796             "\\u03B1\\U0001D169\\U000110BA\\u0C4D\\u0345"
    797         }
    798     };
    799 
    800     UnicodeString left, right, expect, result, r;
    801     UErrorCode errorCode;
    802     UNormalizationMode mode;
    803     int32_t i;
    804 
    805     /* test concatenation */
    806     for(i=0; i<(int32_t)(sizeof(cases)/sizeof(cases[0])); ++i) {
    807         switch(*cases[i][0]) {
    808         case 'C': mode=UNORM_NFC; break;
    809         case 'D': mode=UNORM_NFD; break;
    810         case 'c': mode=UNORM_NFKC; break;
    811         case 'd': mode=UNORM_NFKD; break;
    812         default: mode=UNORM_NONE; break;
    813         }
    814 
    815         left=UnicodeString(cases[i][1], "").unescape();
    816         right=UnicodeString(cases[i][2], "").unescape();
    817         expect=UnicodeString(cases[i][3], "").unescape();
    818 
    819         //result=r=UnicodeString();
    820         errorCode=U_ZERO_ERROR;
    821 
    822         r=Normalizer::concatenate(left, right, result, mode, 0, errorCode);
    823         if(U_FAILURE(errorCode) || /*result!=r ||*/ result!=expect) {
    824             dataerrln("error in Normalizer::concatenate(), cases[] fails with "+
    825                 UnicodeString(u_errorName(errorCode))+", result==expect: expected: "+
    826                 hex(expect)+" =========> got: " + hex(result));
    827         }
    828     }
    829 
    830     /* test error cases */
    831 
    832     /* left.getBuffer()==result.getBuffer() */
    833     result=r=expect=UnicodeString("zz", "");
    834     errorCode=U_UNEXPECTED_TOKEN;
    835     r=Normalizer::concatenate(left, right, result, mode, 0, errorCode);
    836     if(errorCode!=U_UNEXPECTED_TOKEN || result!=r || !result.isBogus()) {
    837         errln("error in Normalizer::concatenate(), violates UErrorCode protocol");
    838     }
    839 
    840     left.setToBogus();
    841     errorCode=U_ZERO_ERROR;
    842     r=Normalizer::concatenate(left, right, result, mode, 0, errorCode);
    843     if(errorCode!=U_ILLEGAL_ARGUMENT_ERROR || result!=r || !result.isBogus()) {
    844         errln("error in Normalizer::concatenate(), does not detect left.isBogus()");
    845     }
    846 }
    847 
    848 // reference implementation of Normalizer::compare
    849 static int32_t
    850 ref_norm_compare(const UnicodeString &s1, const UnicodeString &s2, uint32_t options, UErrorCode &errorCode) {
    851     UnicodeString r1, r2, t1, t2;
    852     int32_t normOptions=(int32_t)(options>>UNORM_COMPARE_NORM_OPTIONS_SHIFT);
    853 
    854     if(options&U_COMPARE_IGNORE_CASE) {
    855         Normalizer::decompose(s1, FALSE, normOptions, r1, errorCode);
    856         Normalizer::decompose(s2, FALSE, normOptions, r2, errorCode);
    857 
    858         r1.foldCase(options);
    859         r2.foldCase(options);
    860     } else {
    861         r1=s1;
    862         r2=s2;
    863     }
    864 
    865     Normalizer::decompose(r1, FALSE, normOptions, t1, errorCode);
    866     Normalizer::decompose(r2, FALSE, normOptions, t2, errorCode);
    867 
    868     if(options&U_COMPARE_CODE_POINT_ORDER) {
    869         return t1.compareCodePointOrder(t2);
    870     } else {
    871         return t1.compare(t2);
    872     }
    873 }
    874 
    875 // test wrapper for Normalizer::compare, sets UNORM_INPUT_IS_FCD appropriately
    876 static int32_t
    877 _norm_compare(const UnicodeString &s1, const UnicodeString &s2, uint32_t options, UErrorCode &errorCode) {
    878     int32_t normOptions=(int32_t)(options>>UNORM_COMPARE_NORM_OPTIONS_SHIFT);
    879 
    880     if( UNORM_YES==Normalizer::quickCheck(s1, UNORM_FCD, normOptions, errorCode) &&
    881         UNORM_YES==Normalizer::quickCheck(s2, UNORM_FCD, normOptions, errorCode)) {
    882         options|=UNORM_INPUT_IS_FCD;
    883     }
    884 
    885     return Normalizer::compare(s1, s2, options, errorCode);
    886 }
    887 
    888 // reference implementation of UnicodeString::caseCompare
    889 static int32_t
    890 ref_case_compare(const UnicodeString &s1, const UnicodeString &s2, uint32_t options) {
    891     UnicodeString t1, t2;
    892 
    893     t1=s1;
    894     t2=s2;
    895 
    896     t1.foldCase(options);
    897     t2.foldCase(options);
    898 
    899     if(options&U_COMPARE_CODE_POINT_ORDER) {
    900         return t1.compareCodePointOrder(t2);
    901     } else {
    902         return t1.compare(t2);
    903     }
    904 }
    905 
    906 // reduce an integer to -1/0/1
    907 static inline int32_t
    908 _sign(int32_t value) {
    909     if(value==0) {
    910         return 0;
    911     } else {
    912         return (value>>31)|1;
    913     }
    914 }
    915 
    916 static const char *
    917 _signString(int32_t value) {
    918     if(value<0) {
    919         return "<0";
    920     } else if(value==0) {
    921         return "=0";
    922     } else /* value>0 */ {
    923         return ">0";
    924     }
    925 }
    926 
    927 void
    928 BasicNormalizerTest::TestCompare() {
    929     // test Normalizer::compare and unorm_compare (thinly wrapped by the former)
    930     // by comparing it with its semantic equivalent
    931     // since we trust the pieces, this is sufficient
    932 
    933     // test each string with itself and each other
    934     // each time with all options
    935     static const char *const
    936     strings[]={
    937         // some cases from NormalizationTest.txt
    938         // 0..3
    939         "D\\u031B\\u0307\\u0323",
    940         "\\u1E0C\\u031B\\u0307",
    941         "D\\u031B\\u0323\\u0307",
    942         "d\\u031B\\u0323\\u0307",
    943 
    944         // 4..6
    945         "\\u00E4",
    946         "a\\u0308",
    947         "A\\u0308",
    948 
    949         // Angstrom sign = A ring
    950         // 7..10
    951         "\\u212B",
    952         "\\u00C5",
    953         "A\\u030A",
    954         "a\\u030A",
    955 
    956         // 11.14
    957         "a\\u059A\\u0316\\u302A\\u032Fb",
    958         "a\\u302A\\u0316\\u032F\\u059Ab",
    959         "a\\u302A\\u0316\\u032F\\u059Ab",
    960         "A\\u059A\\u0316\\u302A\\u032Fb",
    961 
    962         // from ICU case folding tests
    963         // 15..20
    964         "A\\u00df\\u00b5\\ufb03\\U0001040c\\u0131",
    965         "ass\\u03bcffi\\U00010434i",
    966         "\\u0061\\u0042\\u0131\\u03a3\\u00df\\ufb03\\ud93f\\udfff",
    967         "\\u0041\\u0062\\u0069\\u03c3\\u0073\\u0053\\u0046\\u0066\\u0049\\ud93f\\udfff",
    968         "\\u0041\\u0062\\u0131\\u03c3\\u0053\\u0073\\u0066\\u0046\\u0069\\ud93f\\udfff",
    969         "\\u0041\\u0062\\u0069\\u03c3\\u0073\\u0053\\u0046\\u0066\\u0049\\ud93f\\udffd",
    970 
    971         //     U+d800 U+10001   see implementation comment in unorm_cmpEquivFold
    972         // vs. U+10000          at bottom - code point order
    973         // 21..22
    974         "\\ud800\\ud800\\udc01",
    975         "\\ud800\\udc00",
    976 
    977         // other code point order tests from ustrtest.cpp
    978         // 23..31
    979         "\\u20ac\\ud801",
    980         "\\u20ac\\ud800\\udc00",
    981         "\\ud800",
    982         "\\ud800\\uff61",
    983         "\\udfff",
    984         "\\uff61\\udfff",
    985         "\\uff61\\ud800\\udc02",
    986         "\\ud800\\udc02",
    987         "\\ud84d\\udc56",
    988 
    989         // long strings, see cnormtst.c/TestNormCoverage()
    990         // equivalent if case-insensitive
    991         // 32..33
    992         "\\uAD8B\\uAD8B\\uAD8B\\uAD8B"
    993         "\\U0001d15e\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
    994         "\\U0001d15e\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
    995         "\\U0001d15e\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
    996         "\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
    997         "\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
    998         "aaaaaaaaaaaaaaaaaazzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
    999         "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
   1000         "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
   1001         "ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
   1002         "\\uAD8B\\uAD8B\\uAD8B\\uAD8B"
   1003         "d\\u031B\\u0307\\u0323",
   1004 
   1005         "\\u1100\\u116f\\u11aa\\uAD8B\\uAD8B\\u1100\\u116f\\u11aa"
   1006         "\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
   1007         "\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
   1008         "\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
   1009         "\\U0001d15e\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
   1010         "\\U0001d15e\\U0001d157\\U0001d165\\U0001d15e\\U0001d15e\\U0001d15e\\U0001d15e"
   1011         "aaaaaaaaaaAAAAAAAAZZZZZZZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
   1012         "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
   1013         "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"
   1014         "ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd"
   1015         "\\u1100\\u116f\\u11aa\\uAD8B\\uAD8B\\u1100\\u116f\\u11aa"
   1016         "\\u1E0C\\u031B\\u0307",
   1017 
   1018         // some strings that may make a difference whether the compare function
   1019         // case-folds or decomposes first
   1020         // 34..41
   1021         "\\u0360\\u0345\\u0334",
   1022         "\\u0360\\u03b9\\u0334",
   1023 
   1024         "\\u0360\\u1f80\\u0334",
   1025         "\\u0360\\u03b1\\u0313\\u03b9\\u0334",
   1026 
   1027         "\\u0360\\u1ffc\\u0334",
   1028         "\\u0360\\u03c9\\u03b9\\u0334",
   1029 
   1030         "a\\u0360\\u0345\\u0360\\u0345b",
   1031         "a\\u0345\\u0360\\u0345\\u0360b",
   1032 
   1033         // interesting cases for canonical caseless match with turkic i handling
   1034         // 42..43
   1035         "\\u00cc",
   1036         "\\u0069\\u0300",
   1037 
   1038         // strings with post-Unicode 3.2 normalization or normalization corrections
   1039         // 44..45
   1040         "\\u00e4\\u193b\\U0002f868",
   1041         "\\u0061\\u193b\\u0308\\u36fc",
   1042 
   1043         // empty string
   1044         // 46
   1045         ""
   1046     };
   1047 
   1048     UnicodeString s[100]; // at least as many items as in strings[] !
   1049 
   1050     // all combinations of options
   1051     // UNORM_INPUT_IS_FCD is set automatically if both input strings fulfill FCD conditions
   1052     // set UNORM_UNICODE_3_2 in one additional combination
   1053     static const struct {
   1054         uint32_t options;
   1055         const char *name;
   1056     } opt[]={
   1057         { 0, "default" },
   1058         { U_COMPARE_CODE_POINT_ORDER, "c.p. order" },
   1059         { U_COMPARE_IGNORE_CASE, "ignore case" },
   1060         { U_COMPARE_CODE_POINT_ORDER|U_COMPARE_IGNORE_CASE, "c.p. order & ignore case" },
   1061         { U_COMPARE_IGNORE_CASE|U_FOLD_CASE_EXCLUDE_SPECIAL_I, "ignore case & special i" },
   1062         { U_COMPARE_CODE_POINT_ORDER|U_COMPARE_IGNORE_CASE|U_FOLD_CASE_EXCLUDE_SPECIAL_I, "c.p. order & ignore case & special i" },
   1063         { UNORM_UNICODE_3_2<<UNORM_COMPARE_NORM_OPTIONS_SHIFT, "Unicode 3.2" }
   1064     };
   1065 
   1066     int32_t i, j, k, count=LENGTHOF(strings);
   1067     int32_t result, refResult;
   1068 
   1069     UErrorCode errorCode;
   1070 
   1071     // create the UnicodeStrings
   1072     for(i=0; i<count; ++i) {
   1073         s[i]=UnicodeString(strings[i], "").unescape();
   1074     }
   1075 
   1076     // test them each with each other
   1077     for(i=0; i<count; ++i) {
   1078         for(j=i; j<count; ++j) {
   1079             for(k=0; k<LENGTHOF(opt); ++k) {
   1080                 // test Normalizer::compare
   1081                 errorCode=U_ZERO_ERROR;
   1082                 result=_norm_compare(s[i], s[j], opt[k].options, errorCode);
   1083                 refResult=ref_norm_compare(s[i], s[j], opt[k].options, errorCode);
   1084                 if(_sign(result)!=_sign(refResult)) {
   1085                     errln("Normalizer::compare(%d, %d, %s)%s should be %s %s",
   1086                         i, j, opt[k].name, _signString(result), _signString(refResult),
   1087                         U_SUCCESS(errorCode) ? "" : u_errorName(errorCode));
   1088                 }
   1089 
   1090                 // test UnicodeString::caseCompare - same internal implementation function
   1091                 if(opt[k].options&U_COMPARE_IGNORE_CASE) {
   1092                     errorCode=U_ZERO_ERROR;
   1093                     result=s[i].caseCompare(s[j], opt[k].options);
   1094                     refResult=ref_case_compare(s[i], s[j], opt[k].options);
   1095                     if(_sign(result)!=_sign(refResult)) {
   1096                         errln("UniStr::caseCompare(%d, %d, %s)%s should be %s %s",
   1097                             i, j, opt[k].name, _signString(result), _signString(refResult),
   1098                             U_SUCCESS(errorCode) ? "" : u_errorName(errorCode));
   1099                     }
   1100                 }
   1101             }
   1102         }
   1103     }
   1104 
   1105     // test cases with i and I to make sure Turkic works
   1106     static const UChar iI[]={ 0x49, 0x69, 0x130, 0x131 };
   1107     UnicodeSet iSet, set;
   1108 
   1109     UnicodeString s1, s2;
   1110 
   1111     const Normalizer2Impl *nfcImpl=Normalizer2Factory::getNFCImpl(errorCode);
   1112     if(U_FAILURE(errorCode) || !nfcImpl->ensureCanonIterData(errorCode)) {
   1113         dataerrln("Normalizer2Factory::getNFCImpl().ensureCanonIterData() failed: %s",
   1114               u_errorName(errorCode));
   1115         return;
   1116     }
   1117 
   1118     // collect all sets into one for contiguous output
   1119     for(i=0; i<LENGTHOF(iI); ++i) {
   1120         if(nfcImpl->getCanonStartSet(iI[i], iSet)) {
   1121             set.addAll(iSet);
   1122         }
   1123     }
   1124 
   1125     // test all of these precomposed characters
   1126     const Normalizer2 *nfcNorm2=Normalizer2Factory::getNFCInstance(errorCode);
   1127     UnicodeSetIterator it(set);
   1128     while(it.next() && !it.isString()) {
   1129         UChar32 c=it.getCodepoint();
   1130         if(!nfcNorm2->getDecomposition(c, s2)) {
   1131             dataerrln("NFC.getDecomposition(i-composite U+%04lx) failed", (long)c);
   1132             return;
   1133         }
   1134 
   1135         s1.setTo(c);
   1136         for(k=0; k<LENGTHOF(opt); ++k) {
   1137             // test Normalizer::compare
   1138             errorCode=U_ZERO_ERROR;
   1139             result=_norm_compare(s1, s2, opt[k].options, errorCode);
   1140             refResult=ref_norm_compare(s1, s2, opt[k].options, errorCode);
   1141             if(_sign(result)!=_sign(refResult)) {
   1142                 errln("Normalizer::compare(U+%04x with its NFD, %s)%s should be %s %s",
   1143                     c, opt[k].name, _signString(result), _signString(refResult),
   1144                     U_SUCCESS(errorCode) ? "" : u_errorName(errorCode));
   1145             }
   1146 
   1147             // test UnicodeString::caseCompare - same internal implementation function
   1148             if(opt[k].options&U_COMPARE_IGNORE_CASE) {
   1149                 errorCode=U_ZERO_ERROR;
   1150                 result=s1.caseCompare(s2, opt[k].options);
   1151                 refResult=ref_case_compare(s1, s2, opt[k].options);
   1152                 if(_sign(result)!=_sign(refResult)) {
   1153                     errln("UniStr::caseCompare(U+%04x with its NFD, %s)%s should be %s %s",
   1154                         c, opt[k].name, _signString(result), _signString(refResult),
   1155                         U_SUCCESS(errorCode) ? "" : u_errorName(errorCode));
   1156                 }
   1157             }
   1158         }
   1159     }
   1160 
   1161     // test getDecomposition() for some characters that do not decompose
   1162     if( nfcNorm2->getDecomposition(0x20, s2) ||
   1163         nfcNorm2->getDecomposition(0x4e00, s2) ||
   1164         nfcNorm2->getDecomposition(0x20002, s2)
   1165     ) {
   1166         errln("NFC.getDecomposition() returns TRUE for characters which do not have decompositions");
   1167     }
   1168 
   1169     // test FilteredNormalizer2::getDecomposition()
   1170     UnicodeSet filter(UNICODE_STRING_SIMPLE("[^\\u00a0-\\u00ff]"), errorCode);
   1171     FilteredNormalizer2 fn2(*nfcNorm2, filter);
   1172     if( fn2.getDecomposition(0xe4, s1) || !fn2.getDecomposition(0x100, s2) ||
   1173         s2.length()!=2 || s2[0]!=0x41 || s2[1]!=0x304
   1174     ) {
   1175         errln("FilteredNormalizer2(NFC, ^A0-FF).getDecomposition() failed");
   1176     }
   1177 }
   1178 
   1179 // verify that case-folding does not un-FCD strings
   1180 int32_t
   1181 BasicNormalizerTest::countFoldFCDExceptions(uint32_t foldingOptions) {
   1182     UnicodeString s, fold, d;
   1183     UChar32 c;
   1184     int32_t count;
   1185     uint8_t cc, trailCC, foldCC, foldTrailCC;
   1186     UNormalizationCheckResult qcResult;
   1187     int8_t category;
   1188     UBool isNFD;
   1189     UErrorCode errorCode;
   1190 
   1191     logln("Test if case folding may un-FCD a string (folding options %04lx)", foldingOptions);
   1192 
   1193     count=0;
   1194     for(c=0; c<=0x10ffff; ++c) {
   1195         errorCode = U_ZERO_ERROR;
   1196         category=u_charType(c);
   1197         if(category==U_UNASSIGNED) {
   1198             continue; // skip unassigned code points
   1199         }
   1200         if(c==0xac00) {
   1201             c=0xd7a3; // skip Hangul - no case folding there
   1202             continue;
   1203         }
   1204         // skip Han blocks - no case folding there either
   1205         if(c==0x3400) {
   1206             c=0x4db5;
   1207             continue;
   1208         }
   1209         if(c==0x4e00) {
   1210             c=0x9fa5;
   1211             continue;
   1212         }
   1213         if(c==0x20000) {
   1214             c=0x2a6d6;
   1215             continue;
   1216         }
   1217 
   1218         s.setTo(c);
   1219 
   1220         // get leading and trailing cc for c
   1221         Normalizer::decompose(s, FALSE, 0, d, errorCode);
   1222         isNFD= s==d;
   1223         cc=u_getCombiningClass(d.char32At(0));
   1224         trailCC=u_getCombiningClass(d.char32At(d.length()-1));
   1225 
   1226         // get leading and trailing cc for the case-folding of c
   1227         s.foldCase(foldingOptions);
   1228         Normalizer::decompose(s, FALSE, 0, d, errorCode);
   1229         foldCC=u_getCombiningClass(d.char32At(0));
   1230         foldTrailCC=u_getCombiningClass(d.char32At(d.length()-1));
   1231 
   1232         qcResult=Normalizer::quickCheck(s, UNORM_FCD, errorCode);
   1233 
   1234         if (U_FAILURE(errorCode)) {
   1235             ++count;
   1236             dataerrln("U+%04lx: Failed with error %s", u_errorName(errorCode));
   1237         }
   1238 
   1239         // bad:
   1240         // - character maps to empty string: adjacent characters may then need reordering
   1241         // - folding has different leading/trailing cc's, and they don't become just 0
   1242         // - folding itself is not FCD
   1243         if( qcResult!=UNORM_YES ||
   1244             s.isEmpty() ||
   1245             (cc!=foldCC && foldCC!=0) || (trailCC!=foldTrailCC && foldTrailCC!=0)
   1246         ) {
   1247             ++count;
   1248             dataerrln("U+%04lx: case-folding may un-FCD a string (folding options %04lx)", c, foldingOptions);
   1249             dataerrln("  cc %02x trailCC %02x    foldCC(U+%04lx) %02x foldTrailCC(U+%04lx) %02x   quickCheck(folded)=%d", cc, trailCC, d.char32At(0), foldCC, d.char32At(d.length()-1), foldTrailCC, qcResult);
   1250             continue;
   1251         }
   1252 
   1253         // also bad:
   1254         // if a code point is in NFD but its case folding is not, then
   1255         // unorm_compare will also fail
   1256         if(isNFD && UNORM_YES!=Normalizer::quickCheck(s, UNORM_NFD, errorCode)) {
   1257             ++count;
   1258             errln("U+%04lx: case-folding un-NFDs this character (folding options %04lx)", c, foldingOptions);
   1259         }
   1260     }
   1261 
   1262     logln("There are %ld code points for which case-folding may un-FCD a string (folding options %04lx)", count, foldingOptions);
   1263     return count;
   1264 }
   1265 
   1266 void
   1267 BasicNormalizerTest::FindFoldFCDExceptions() {
   1268     int32_t count;
   1269 
   1270     count=countFoldFCDExceptions(0);
   1271     count+=countFoldFCDExceptions(U_FOLD_CASE_EXCLUDE_SPECIAL_I);
   1272     if(count>0) {
   1273         /*
   1274          * If case-folding un-FCDs any strings, then unorm_compare() must be
   1275          * re-implemented.
   1276          * It currently assumes that one can check for FCD then case-fold
   1277          * and then still have FCD strings for raw decomposition without reordering.
   1278          */
   1279         dataerrln("error: There are %ld code points for which case-folding may un-FCD a string for all folding options.\n"
   1280               "See comment in BasicNormalizerTest::FindFoldFCDExceptions()!", count);
   1281     }
   1282 }
   1283 
   1284 static void
   1285 initExpectedSkippables(UnicodeSet skipSets[UNORM_MODE_COUNT], UErrorCode &errorCode) {
   1286     skipSets[UNORM_NFD].applyPattern(
   1287         UNICODE_STRING_SIMPLE("[[:NFD_QC=Yes:]&[:ccc=0:]]"), errorCode);
   1288     skipSets[UNORM_NFC].applyPattern(
   1289         UNICODE_STRING_SIMPLE("[[:NFC_QC=Yes:]&[:ccc=0:]-[:HST=LV:]]"), errorCode);
   1290     skipSets[UNORM_NFKD].applyPattern(
   1291         UNICODE_STRING_SIMPLE("[[:NFKD_QC=Yes:]&[:ccc=0:]]"), errorCode);
   1292     skipSets[UNORM_NFKC].applyPattern(
   1293         UNICODE_STRING_SIMPLE("[[:NFKC_QC=Yes:]&[:ccc=0:]-[:HST=LV:]]"), errorCode);
   1294 
   1295     // Remove from the NFC and NFKC sets all those characters that change
   1296     // when a back-combining character is added.
   1297     // First, get all of the back-combining characters and their combining classes.
   1298     UnicodeSet combineBack("[:NFC_QC=Maybe:]", errorCode);
   1299     int32_t numCombineBack=combineBack.size();
   1300     int32_t *combineBackCharsAndCc=new int32_t[numCombineBack*2];
   1301     UnicodeSetIterator iter(combineBack);
   1302     for(int32_t i=0; i<numCombineBack; ++i) {
   1303         iter.next();
   1304         UChar32 c=iter.getCodepoint();
   1305         combineBackCharsAndCc[2*i]=c;
   1306         combineBackCharsAndCc[2*i+1]=u_getCombiningClass(c);
   1307     }
   1308 
   1309     // We need not look at control codes, Han characters nor Hangul LVT syllables because they
   1310     // do not combine forward. LV syllables are already removed.
   1311     UnicodeSet notInteresting("[[:C:][:Unified_Ideograph:][:HST=LVT:]]", errorCode);
   1312     LocalPointer<UnicodeSet> unsure(&((UnicodeSet *)(skipSets[UNORM_NFC].clone()))->removeAll(notInteresting));
   1313     // System.out.format("unsure.size()=%d\n", unsure.size());
   1314 
   1315     // For each character about which we are unsure, see if it changes when we add
   1316     // one of the back-combining characters.
   1317     const Normalizer2 *norm2=Normalizer2::getInstance(NULL, "nfc", UNORM2_COMPOSE, errorCode);
   1318     UnicodeString s;
   1319     iter.reset(*unsure);
   1320     while(iter.next()) {
   1321         UChar32 c=iter.getCodepoint();
   1322         s.setTo(c);
   1323         int32_t cLength=s.length();
   1324         int32_t tccc=u_getIntPropertyValue(c, UCHAR_TRAIL_CANONICAL_COMBINING_CLASS);
   1325         for(int32_t i=0; i<numCombineBack; ++i) {
   1326             // If c's decomposition ends with a character with non-zero combining class, then
   1327             // c can only change if it combines with a character with a non-zero combining class.
   1328             int32_t cc2=combineBackCharsAndCc[2*i+1];
   1329             if(tccc==0 || cc2!=0) {
   1330                 UChar32 c2=combineBackCharsAndCc[2*i];
   1331                 s.append(c2);
   1332                 if(!norm2->isNormalized(s, errorCode)) {
   1333                     // System.out.format("remove U+%04x (tccc=%d) + U+%04x (cc=%d)\n", c, tccc, c2, cc2);
   1334                     skipSets[UNORM_NFC].remove(c);
   1335                     skipSets[UNORM_NFKC].remove(c);
   1336                     break;
   1337                 }
   1338                 s.truncate(cLength);
   1339             }
   1340         }
   1341     }
   1342     delete [] combineBackCharsAndCc;
   1343 }
   1344 
   1345 void
   1346 BasicNormalizerTest::TestSkippable() {
   1347     UnicodeSet diff, skipSets[UNORM_MODE_COUNT], expectSets[UNORM_MODE_COUNT];
   1348     UnicodeString s, pattern;
   1349 
   1350     /* build NF*Skippable sets from runtime data */
   1351     IcuTestErrorCode errorCode(*this, "TestSkippable");
   1352     skipSets[UNORM_NFD].applyPattern(UNICODE_STRING_SIMPLE("[:NFD_Inert:]"), errorCode);
   1353     skipSets[UNORM_NFKD].applyPattern(UNICODE_STRING_SIMPLE("[:NFKD_Inert:]"), errorCode);
   1354     skipSets[UNORM_NFC].applyPattern(UNICODE_STRING_SIMPLE("[:NFC_Inert:]"), errorCode);
   1355     skipSets[UNORM_NFKC].applyPattern(UNICODE_STRING_SIMPLE("[:NFKC_Inert:]"), errorCode);
   1356     if(errorCode.logDataIfFailureAndReset("UnicodeSet(NF..._Inert) failed")) {
   1357         return;
   1358     }
   1359 
   1360     /* get expected sets from hardcoded patterns */
   1361     initExpectedSkippables(expectSets, errorCode);
   1362     errorCode.assertSuccess();
   1363 
   1364     for(int32_t i=UNORM_NONE; i<UNORM_MODE_COUNT; ++i) {
   1365         if(skipSets[i]!=expectSets[i]) {
   1366             errln("error: TestSkippable skipSets[%d]!=expectedSets[%d]\n", i, i);
   1367             // Note: This used to depend on hardcoded UnicodeSet patterns generated by
   1368             // Mark's unicodetools.com.ibm.text.UCD.NFSkippable, by
   1369             // running com.ibm.text.UCD.Main with the option NFSkippable.
   1370             // Since ICU 4.6/Unicode 6, we are generating the
   1371             // expectSets ourselves in initSkippables().
   1372 
   1373             s=UNICODE_STRING_SIMPLE("skip-expect=");
   1374             (diff=skipSets[i]).removeAll(expectSets[i]).toPattern(pattern, TRUE);
   1375             s.append(pattern);
   1376 
   1377             pattern.remove();
   1378             s.append(UNICODE_STRING_SIMPLE("\n\nexpect-skip="));
   1379             (diff=expectSets[i]).removeAll(skipSets[i]).toPattern(pattern, TRUE);
   1380             s.append(pattern);
   1381             s.append(UNICODE_STRING_SIMPLE("\n\n"));
   1382 
   1383             errln(s);
   1384         }
   1385     }
   1386 }
   1387 
   1388 struct StringPair { const char *input, *expected; };
   1389 
   1390 void
   1391 BasicNormalizerTest::TestCustomComp() {
   1392     static const StringPair pairs[]={
   1393         { "\\uD801\\uE000\\uDFFE", "" },
   1394         { "\\uD800\\uD801\\uE000\\uDFFE\\uDFFF", "\\uD7FF\\uFFFF" },
   1395         { "\\uD800\\uD801\\uDFFE\\uDFFF", "\\uD7FF\\U000107FE\\uFFFF" },
   1396         { "\\uE001\\U000110B9\\u0345\\u0308\\u0327", "\\uE002\\U000110B9\\u0327\\u0345" },
   1397         { "\\uE010\\U000F0011\\uE012", "\\uE011\\uE012" },
   1398         { "\\uE010\\U000F0011\\U000F0011\\uE012", "\\uE011\\U000F0010" },
   1399         { "\\uE111\\u1161\\uE112\\u1162", "\\uAE4C\\u1102\\u0062\\u1162" },
   1400         { "\\uFFF3\\uFFF7\\U00010036\\U00010077", "\\U00010037\\U00010037\\uFFF6\\U00010037" }
   1401     };
   1402     IcuTestErrorCode errorCode(*this, "BasicNormalizerTest/TestCustomComp");
   1403     const Normalizer2 *customNorm2=
   1404         Normalizer2::getInstance(loadTestData(errorCode), "testnorm",
   1405                                  UNORM2_COMPOSE, errorCode);
   1406     if(errorCode.logDataIfFailureAndReset("unable to load testdata/testnorm.nrm")) {
   1407         return;
   1408     }
   1409     for(int32_t i=0; i<LENGTHOF(pairs); ++i) {
   1410         const StringPair &pair=pairs[i];
   1411         UnicodeString input=UnicodeString(pair.input, -1, US_INV).unescape();
   1412         UnicodeString expected=UnicodeString(pair.expected, -1, US_INV).unescape();
   1413         UnicodeString result=customNorm2->normalize(input, errorCode);
   1414         if(result!=expected) {
   1415             errln("custom compose Normalizer2 did not normalize input %d as expected", i);
   1416         }
   1417     }
   1418 }
   1419 
   1420 void
   1421 BasicNormalizerTest::TestCustomFCC() {
   1422     static const StringPair pairs[]={
   1423         { "\\uD801\\uE000\\uDFFE", "" },
   1424         { "\\uD800\\uD801\\uE000\\uDFFE\\uDFFF", "\\uD7FF\\uFFFF" },
   1425         { "\\uD800\\uD801\\uDFFE\\uDFFF", "\\uD7FF\\U000107FE\\uFFFF" },
   1426         // The following expected result is different from CustomComp
   1427         // because of only-contiguous composition.
   1428         { "\\uE001\\U000110B9\\u0345\\u0308\\u0327", "\\uE001\\U000110B9\\u0327\\u0308\\u0345" },
   1429         { "\\uE010\\U000F0011\\uE012", "\\uE011\\uE012" },
   1430         { "\\uE010\\U000F0011\\U000F0011\\uE012", "\\uE011\\U000F0010" },
   1431         { "\\uE111\\u1161\\uE112\\u1162", "\\uAE4C\\u1102\\u0062\\u1162" },
   1432         { "\\uFFF3\\uFFF7\\U00010036\\U00010077", "\\U00010037\\U00010037\\uFFF6\\U00010037" }
   1433     };
   1434     IcuTestErrorCode errorCode(*this, "BasicNormalizerTest/TestCustomFCC");
   1435     const Normalizer2 *customNorm2=
   1436         Normalizer2::getInstance(loadTestData(errorCode), "testnorm",
   1437                                  UNORM2_COMPOSE_CONTIGUOUS, errorCode);
   1438     if(errorCode.logDataIfFailureAndReset("unable to load testdata/testnorm.nrm")) {
   1439         return;
   1440     }
   1441     for(int32_t i=0; i<LENGTHOF(pairs); ++i) {
   1442         const StringPair &pair=pairs[i];
   1443         UnicodeString input=UnicodeString(pair.input, -1, US_INV).unescape();
   1444         UnicodeString expected=UnicodeString(pair.expected, -1, US_INV).unescape();
   1445         UnicodeString result=customNorm2->normalize(input, errorCode);
   1446         if(result!=expected) {
   1447             errln("custom FCC Normalizer2 did not normalize input %d as expected", i);
   1448         }
   1449     }
   1450 }
   1451 
   1452 /* Improve code coverage of Normalizer2 */
   1453 void
   1454 BasicNormalizerTest::TestFilteredNormalizer2Coverage() {
   1455     UErrorCode errorCode = U_ZERO_ERROR;
   1456     const Normalizer2 *nfcNorm2=Normalizer2Factory::getNFCInstance(errorCode);
   1457     if (U_FAILURE(errorCode)) {
   1458         dataerrln("Normalizer2Factory::getNFCInstance() call failed - %s", u_errorName(status));
   1459         return;
   1460     }
   1461     UnicodeSet filter(UNICODE_STRING_SIMPLE("[^\\u00a0-\\u00ff]"), errorCode);
   1462     UnicodeString newString1 = UNICODE_STRING_SIMPLE("[^\\u0100-\\u01ff]");
   1463     UnicodeString newString2 = UNICODE_STRING_SIMPLE("[^\\u0200-\\u02ff]");
   1464     FilteredNormalizer2 fn2(*nfcNorm2, filter);
   1465 
   1466     UChar32 char32 = 0x0054;
   1467 
   1468     if (fn2.isInert(char32)) {
   1469         errln("FilteredNormalizer2.isInert() failed.");
   1470     }
   1471 
   1472     if (fn2.hasBoundaryAfter(char32)) {
   1473         errln("FilteredNormalizer2.hasBoundaryAfter() failed.");
   1474     }
   1475 
   1476     fn2.append(newString1, newString2, errorCode);
   1477     if (U_FAILURE(errorCode)) {
   1478         errln("FilteredNormalizer2.append() failed.");
   1479     }
   1480 }
   1481 
   1482 #endif /* #if !UCONFIG_NO_NORMALIZATION */
   1483