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      1 //  2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 *******************************************************************************
      5 *
      6 *   Copyright (C) 2003-2014, International Business Machines
      7 *   Corporation and others.  All Rights Reserved.
      8 *
      9 *******************************************************************************
     10 *   file name:  convtest.cpp
     11 *   encoding:   UTF-8
     12 *   tab size:   8 (not used)
     13 *   indentation:4
     14 *
     15 *   created on: 2003jul15
     16 *   created by: Markus W. Scherer
     17 *
     18 *   Test file for data-driven conversion tests.
     19 */
     20 
     21 #include "unicode/utypes.h"
     22 
     23 #if !UCONFIG_NO_LEGACY_CONVERSION
     24 /*
     25  * Note: Turning off all of convtest.cpp if !UCONFIG_NO_LEGACY_CONVERSION
     26  * is slightly unnecessary - it removes tests for Unicode charsets
     27  * like UTF-8 that should work.
     28  * However, there is no easy way for the test to detect whether a test case
     29  * is for a Unicode charset, so it would be difficult to only exclude those.
     30  * Also, regular testing of ICU is done with all modules on, therefore
     31  * not testing conversion for a custom configuration like this should be ok.
     32  */
     33 
     34 #include "unicode/ucnv.h"
     35 #include "unicode/unistr.h"
     36 #include "unicode/parsepos.h"
     37 #include "unicode/uniset.h"
     38 #include "unicode/ustring.h"
     39 #include "unicode/ures.h"
     40 #include "unicode/utf16.h"
     41 #include "convtest.h"
     42 #include "cmemory.h"
     43 #include "unicode/tstdtmod.h"
     44 #include <string.h>
     45 #include <stdlib.h>
     46 
     47 enum {
     48     // characters used in test data for callbacks
     49     SUB_CB='?',
     50     SKIP_CB='0',
     51     STOP_CB='.',
     52     ESC_CB='&'
     53 };
     54 
     55 ConversionTest::ConversionTest() {
     56     UErrorCode errorCode=U_ZERO_ERROR;
     57     utf8Cnv=ucnv_open("UTF-8", &errorCode);
     58     ucnv_setToUCallBack(utf8Cnv, UCNV_TO_U_CALLBACK_STOP, NULL, NULL, NULL, &errorCode);
     59     if(U_FAILURE(errorCode)) {
     60         errln("unable to open UTF-8 converter");
     61     }
     62 }
     63 
     64 ConversionTest::~ConversionTest() {
     65     ucnv_close(utf8Cnv);
     66 }
     67 
     68 void
     69 ConversionTest::runIndexedTest(int32_t index, UBool exec, const char *&name, char * /*par*/) {
     70     if (exec) logln("TestSuite ConversionTest: ");
     71     TESTCASE_AUTO_BEGIN;
     72 #if !UCONFIG_NO_FILE_IO
     73     TESTCASE_AUTO(TestToUnicode);
     74     TESTCASE_AUTO(TestFromUnicode);
     75     TESTCASE_AUTO(TestGetUnicodeSet);
     76 #endif
     77     TESTCASE_AUTO(TestGetUnicodeSet2);
     78     TESTCASE_AUTO(TestDefaultIgnorableCallback);
     79     TESTCASE_AUTO(TestUTF8ToUTF8Overflow);
     80     TESTCASE_AUTO_END;
     81 }
     82 
     83 // test data interface ----------------------------------------------------- ***
     84 
     85 void
     86 ConversionTest::TestToUnicode() {
     87     ConversionCase cc;
     88     char charset[100], cbopt[4];
     89     const char *option;
     90     UnicodeString s, unicode;
     91     int32_t offsetsLength;
     92     UConverterToUCallback callback;
     93 
     94     TestDataModule *dataModule;
     95     TestData *testData;
     96     const DataMap *testCase;
     97     UErrorCode errorCode;
     98     int32_t i;
     99 
    100     errorCode=U_ZERO_ERROR;
    101     dataModule=TestDataModule::getTestDataModule("conversion", *this, errorCode);
    102     if(U_SUCCESS(errorCode)) {
    103         testData=dataModule->createTestData("toUnicode", errorCode);
    104         if(U_SUCCESS(errorCode)) {
    105             for(i=0; testData->nextCase(testCase, errorCode); ++i) {
    106                 if(U_FAILURE(errorCode)) {
    107                     errln("error retrieving conversion/toUnicode test case %d - %s",
    108                             i, u_errorName(errorCode));
    109                     errorCode=U_ZERO_ERROR;
    110                     continue;
    111                 }
    112 
    113                 cc.caseNr=i;
    114 
    115                 s=testCase->getString("charset", errorCode);
    116                 s.extract(0, 0x7fffffff, charset, sizeof(charset), "");
    117                 cc.charset=charset;
    118 
    119                 // BEGIN android-added
    120                 // To save space, Android does not build full ISO-2022-CN tables.
    121                 // We skip the TestGetKeywordValuesForLocale for counting available collations.
    122                 if (strlen(charset) >= 8 &&
    123                     strncmp(charset+4, "2022-CN", 4) == 0) {
    124                     continue;
    125                 }
    126                 // END android-added
    127 
    128                 cc.bytes=testCase->getBinary(cc.bytesLength, "bytes", errorCode);
    129                 unicode=testCase->getString("unicode", errorCode);
    130                 cc.unicode=unicode.getBuffer();
    131                 cc.unicodeLength=unicode.length();
    132 
    133                 offsetsLength=0;
    134                 cc.offsets=testCase->getIntVector(offsetsLength, "offsets", errorCode);
    135                 if(offsetsLength==0) {
    136                     cc.offsets=NULL;
    137                 } else if(offsetsLength!=unicode.length()) {
    138                     errln("toUnicode[%d] unicode[%d] and offsets[%d] must have the same length",
    139                             i, unicode.length(), offsetsLength);
    140                     errorCode=U_ILLEGAL_ARGUMENT_ERROR;
    141                 }
    142 
    143                 cc.finalFlush= 0!=testCase->getInt28("flush", errorCode);
    144                 cc.fallbacks= 0!=testCase->getInt28("fallbacks", errorCode);
    145 
    146                 s=testCase->getString("errorCode", errorCode);
    147                 if(s==UNICODE_STRING("invalid", 7)) {
    148                     cc.outErrorCode=U_INVALID_CHAR_FOUND;
    149                 } else if(s==UNICODE_STRING("illegal", 7)) {
    150                     cc.outErrorCode=U_ILLEGAL_CHAR_FOUND;
    151                 } else if(s==UNICODE_STRING("truncated", 9)) {
    152                     cc.outErrorCode=U_TRUNCATED_CHAR_FOUND;
    153                 } else if(s==UNICODE_STRING("illesc", 6)) {
    154                     cc.outErrorCode=U_ILLEGAL_ESCAPE_SEQUENCE;
    155                 } else if(s==UNICODE_STRING("unsuppesc", 9)) {
    156                     cc.outErrorCode=U_UNSUPPORTED_ESCAPE_SEQUENCE;
    157                 } else {
    158                     cc.outErrorCode=U_ZERO_ERROR;
    159                 }
    160 
    161                 s=testCase->getString("callback", errorCode);
    162                 s.extract(0, 0x7fffffff, cbopt, sizeof(cbopt), "");
    163                 cc.cbopt=cbopt;
    164                 switch(cbopt[0]) {
    165                 case SUB_CB:
    166                     callback=UCNV_TO_U_CALLBACK_SUBSTITUTE;
    167                     break;
    168                 case SKIP_CB:
    169                     callback=UCNV_TO_U_CALLBACK_SKIP;
    170                     break;
    171                 case STOP_CB:
    172                     callback=UCNV_TO_U_CALLBACK_STOP;
    173                     break;
    174                 case ESC_CB:
    175                     callback=UCNV_TO_U_CALLBACK_ESCAPE;
    176                     break;
    177                 default:
    178                     callback=NULL;
    179                     break;
    180                 }
    181                 option=callback==NULL ? cbopt : cbopt+1;
    182                 if(*option==0) {
    183                     option=NULL;
    184                 }
    185 
    186                 cc.invalidChars=testCase->getBinary(cc.invalidLength, "invalidChars", errorCode);
    187 
    188                 if(U_FAILURE(errorCode)) {
    189                     errln("error parsing conversion/toUnicode test case %d - %s",
    190                             i, u_errorName(errorCode));
    191                     errorCode=U_ZERO_ERROR;
    192                 } else {
    193                     logln("TestToUnicode[%d] %s", i, charset);
    194                     ToUnicodeCase(cc, callback, option);
    195                 }
    196             }
    197             delete testData;
    198         }
    199         delete dataModule;
    200     }
    201     else {
    202         dataerrln("Could not load test conversion data");
    203     }
    204 }
    205 
    206 void
    207 ConversionTest::TestFromUnicode() {
    208     ConversionCase cc;
    209     char charset[100], cbopt[4];
    210     const char *option;
    211     UnicodeString s, unicode, invalidUChars;
    212     int32_t offsetsLength, index;
    213     UConverterFromUCallback callback;
    214 
    215     TestDataModule *dataModule;
    216     TestData *testData;
    217     const DataMap *testCase;
    218     const UChar *p;
    219     UErrorCode errorCode;
    220     int32_t i, length;
    221 
    222     errorCode=U_ZERO_ERROR;
    223     dataModule=TestDataModule::getTestDataModule("conversion", *this, errorCode);
    224     if(U_SUCCESS(errorCode)) {
    225         testData=dataModule->createTestData("fromUnicode", errorCode);
    226         if(U_SUCCESS(errorCode)) {
    227             for(i=0; testData->nextCase(testCase, errorCode); ++i) {
    228                 if(U_FAILURE(errorCode)) {
    229                     errln("error retrieving conversion/fromUnicode test case %d - %s",
    230                             i, u_errorName(errorCode));
    231                     errorCode=U_ZERO_ERROR;
    232                     continue;
    233                 }
    234 
    235                 cc.caseNr=i;
    236 
    237                 s=testCase->getString("charset", errorCode);
    238                 s.extract(0, 0x7fffffff, charset, sizeof(charset), "");
    239                 cc.charset=charset;
    240 
    241                 // BEGIN android-added
    242                 // To save space, Android does not build full ISO-2022-CN tables.
    243                 // We skip the TestGetKeywordValuesForLocale for counting available collations.
    244                 if (strlen(charset) >= 8 &&
    245                     strncmp(charset+4, "2022-CN", 4) == 0) {
    246                     continue;
    247                 }
    248                 // END android-added
    249 
    250                 unicode=testCase->getString("unicode", errorCode);
    251                 cc.unicode=unicode.getBuffer();
    252                 cc.unicodeLength=unicode.length();
    253                 cc.bytes=testCase->getBinary(cc.bytesLength, "bytes", errorCode);
    254 
    255                 offsetsLength=0;
    256                 cc.offsets=testCase->getIntVector(offsetsLength, "offsets", errorCode);
    257                 if(offsetsLength==0) {
    258                     cc.offsets=NULL;
    259                 } else if(offsetsLength!=cc.bytesLength) {
    260                     errln("fromUnicode[%d] bytes[%d] and offsets[%d] must have the same length",
    261                             i, cc.bytesLength, offsetsLength);
    262                     errorCode=U_ILLEGAL_ARGUMENT_ERROR;
    263                 }
    264 
    265                 cc.finalFlush= 0!=testCase->getInt28("flush", errorCode);
    266                 cc.fallbacks= 0!=testCase->getInt28("fallbacks", errorCode);
    267 
    268                 s=testCase->getString("errorCode", errorCode);
    269                 if(s==UNICODE_STRING("invalid", 7)) {
    270                     cc.outErrorCode=U_INVALID_CHAR_FOUND;
    271                 } else if(s==UNICODE_STRING("illegal", 7)) {
    272                     cc.outErrorCode=U_ILLEGAL_CHAR_FOUND;
    273                 } else if(s==UNICODE_STRING("truncated", 9)) {
    274                     cc.outErrorCode=U_TRUNCATED_CHAR_FOUND;
    275                 } else {
    276                     cc.outErrorCode=U_ZERO_ERROR;
    277                 }
    278 
    279                 s=testCase->getString("callback", errorCode);
    280                 cc.setSub=0; // default: no subchar
    281 
    282                 if((index=s.indexOf((UChar)0))>0) {
    283                     // read NUL-separated subchar first, if any
    284                     // copy the subchar from Latin-1 characters
    285                     // start after the NUL
    286                     p=s.getTerminatedBuffer();
    287                     length=index+1;
    288                     p+=length;
    289                     length=s.length()-length;
    290                     if(length<=0 || length>=(int32_t)sizeof(cc.subchar)) {
    291                         errorCode=U_ILLEGAL_ARGUMENT_ERROR;
    292                     } else {
    293                         int32_t j;
    294 
    295                         for(j=0; j<length; ++j) {
    296                             cc.subchar[j]=(char)p[j];
    297                         }
    298                         // NUL-terminate the subchar
    299                         cc.subchar[j]=0;
    300                         cc.setSub=1;
    301                     }
    302 
    303                     // remove the NUL and subchar from s
    304                     s.truncate(index);
    305                 } else if((index=s.indexOf((UChar)0x3d))>0) /* '=' */ {
    306                     // read a substitution string, separated by an equal sign
    307                     p=s.getBuffer()+index+1;
    308                     length=s.length()-(index+1);
    309                     if(length<0 || length>=UPRV_LENGTHOF(cc.subString)) {
    310                         errorCode=U_ILLEGAL_ARGUMENT_ERROR;
    311                     } else {
    312                         u_memcpy(cc.subString, p, length);
    313                         // NUL-terminate the subString
    314                         cc.subString[length]=0;
    315                         cc.setSub=-1;
    316                     }
    317 
    318                     // remove the equal sign and subString from s
    319                     s.truncate(index);
    320                 }
    321 
    322                 s.extract(0, 0x7fffffff, cbopt, sizeof(cbopt), "");
    323                 cc.cbopt=cbopt;
    324                 switch(cbopt[0]) {
    325                 case SUB_CB:
    326                     callback=UCNV_FROM_U_CALLBACK_SUBSTITUTE;
    327                     break;
    328                 case SKIP_CB:
    329                     callback=UCNV_FROM_U_CALLBACK_SKIP;
    330                     break;
    331                 case STOP_CB:
    332                     callback=UCNV_FROM_U_CALLBACK_STOP;
    333                     break;
    334                 case ESC_CB:
    335                     callback=UCNV_FROM_U_CALLBACK_ESCAPE;
    336                     break;
    337                 default:
    338                     callback=NULL;
    339                     break;
    340                 }
    341                 option=callback==NULL ? cbopt : cbopt+1;
    342                 if(*option==0) {
    343                     option=NULL;
    344                 }
    345 
    346                 invalidUChars=testCase->getString("invalidUChars", errorCode);
    347                 cc.invalidUChars=invalidUChars.getBuffer();
    348                 cc.invalidLength=invalidUChars.length();
    349 
    350                 if(U_FAILURE(errorCode)) {
    351                     errln("error parsing conversion/fromUnicode test case %d - %s",
    352                             i, u_errorName(errorCode));
    353                     errorCode=U_ZERO_ERROR;
    354                 } else {
    355                     logln("TestFromUnicode[%d] %s", i, charset);
    356                     FromUnicodeCase(cc, callback, option);
    357                 }
    358             }
    359             delete testData;
    360         }
    361         delete dataModule;
    362     }
    363     else {
    364         dataerrln("Could not load test conversion data");
    365     }
    366 }
    367 
    368 static const UChar ellipsis[]={ 0x2e, 0x2e, 0x2e };
    369 
    370 void
    371 ConversionTest::TestGetUnicodeSet() {
    372     char charset[100];
    373     UnicodeString s, map, mapnot;
    374     int32_t which;
    375 
    376     ParsePosition pos;
    377     UnicodeSet cnvSet, mapSet, mapnotSet, diffSet;
    378     UnicodeSet *cnvSetPtr = &cnvSet;
    379     LocalUConverterPointer cnv;
    380 
    381     TestDataModule *dataModule;
    382     TestData *testData;
    383     const DataMap *testCase;
    384     UErrorCode errorCode;
    385     int32_t i;
    386 
    387     errorCode=U_ZERO_ERROR;
    388     dataModule=TestDataModule::getTestDataModule("conversion", *this, errorCode);
    389     if(U_SUCCESS(errorCode)) {
    390         testData=dataModule->createTestData("getUnicodeSet", errorCode);
    391         if(U_SUCCESS(errorCode)) {
    392             for(i=0; testData->nextCase(testCase, errorCode); ++i) {
    393                 if(U_FAILURE(errorCode)) {
    394                     errln("error retrieving conversion/getUnicodeSet test case %d - %s",
    395                             i, u_errorName(errorCode));
    396                     errorCode=U_ZERO_ERROR;
    397                     continue;
    398                 }
    399 
    400                 s=testCase->getString("charset", errorCode);
    401                 s.extract(0, 0x7fffffff, charset, sizeof(charset), "");
    402 
    403                 // BEGIN android-added
    404                 // To save space, Android does not build full ISO-2022-CN tables.
    405                 // We skip the TestGetKeywordValuesForLocale for counting available collations.
    406                 if (strlen(charset) >= 8 &&
    407                     strncmp(charset+4, "2022-CN", 4) == 0) {
    408                     continue;
    409                 }
    410                 // END android-added
    411 
    412                 map=testCase->getString("map", errorCode);
    413                 mapnot=testCase->getString("mapnot", errorCode);
    414 
    415                 which=testCase->getInt28("which", errorCode);
    416 
    417                 if(U_FAILURE(errorCode)) {
    418                     errln("error parsing conversion/getUnicodeSet test case %d - %s",
    419                             i, u_errorName(errorCode));
    420                     errorCode=U_ZERO_ERROR;
    421                     continue;
    422                 }
    423 
    424                 // test this test case
    425                 mapSet.clear();
    426                 mapnotSet.clear();
    427 
    428                 pos.setIndex(0);
    429                 mapSet.applyPattern(map, pos, 0, NULL, errorCode);
    430                 if(U_FAILURE(errorCode) || pos.getIndex()!=map.length()) {
    431                     errln("error creating the map set for conversion/getUnicodeSet test case %d - %s\n"
    432                           "    error index %d  index %d  U+%04x",
    433                             i, u_errorName(errorCode), pos.getErrorIndex(), pos.getIndex(), map.char32At(pos.getIndex()));
    434                     errorCode=U_ZERO_ERROR;
    435                     continue;
    436                 }
    437 
    438                 pos.setIndex(0);
    439                 mapnotSet.applyPattern(mapnot, pos, 0, NULL, errorCode);
    440                 if(U_FAILURE(errorCode) || pos.getIndex()!=mapnot.length()) {
    441                     errln("error creating the mapnot set for conversion/getUnicodeSet test case %d - %s\n"
    442                           "    error index %d  index %d  U+%04x",
    443                             i, u_errorName(errorCode), pos.getErrorIndex(), pos.getIndex(), mapnot.char32At(pos.getIndex()));
    444                     errorCode=U_ZERO_ERROR;
    445                     continue;
    446                 }
    447 
    448                 logln("TestGetUnicodeSet[%d] %s", i, charset);
    449 
    450                 cnv.adoptInstead(cnv_open(charset, errorCode));
    451                 if(U_FAILURE(errorCode)) {
    452                     errcheckln(errorCode, "error opening \"%s\" for conversion/getUnicodeSet test case %d - %s",
    453                             charset, i, u_errorName(errorCode));
    454                     errorCode=U_ZERO_ERROR;
    455                     continue;
    456                 }
    457 
    458                 ucnv_getUnicodeSet(cnv.getAlias(), cnvSetPtr->toUSet(), (UConverterUnicodeSet)which, &errorCode);
    459 
    460                 if(U_FAILURE(errorCode)) {
    461                     errln("error in ucnv_getUnicodeSet(\"%s\") for conversion/getUnicodeSet test case %d - %s",
    462                             charset, i, u_errorName(errorCode));
    463                     errorCode=U_ZERO_ERROR;
    464                     continue;
    465                 }
    466 
    467                 // are there items that must be in cnvSet but are not?
    468                 (diffSet=mapSet).removeAll(cnvSet);
    469                 if(!diffSet.isEmpty()) {
    470                     diffSet.toPattern(s, TRUE);
    471                     if(s.length()>100) {
    472                         s.replace(100, 0x7fffffff, ellipsis, UPRV_LENGTHOF(ellipsis));
    473                     }
    474                     errln("error: ucnv_getUnicodeSet(\"%s\") is missing items - conversion/getUnicodeSet test case %d",
    475                             charset, i);
    476                     errln(s);
    477                 }
    478 
    479                 // are there items that must not be in cnvSet but are?
    480                 (diffSet=mapnotSet).retainAll(cnvSet);
    481                 if(!diffSet.isEmpty()) {
    482                     diffSet.toPattern(s, TRUE);
    483                     if(s.length()>100) {
    484                         s.replace(100, 0x7fffffff, ellipsis, UPRV_LENGTHOF(ellipsis));
    485                     }
    486                     errln("error: ucnv_getUnicodeSet(\"%s\") contains unexpected items - conversion/getUnicodeSet test case %d",
    487                             charset, i);
    488                     errln(s);
    489                 }
    490             }
    491             delete testData;
    492         }
    493         delete dataModule;
    494     }
    495     else {
    496         dataerrln("Could not load test conversion data");
    497     }
    498 }
    499 
    500 U_CDECL_BEGIN
    501 static void U_CALLCONV
    502 getUnicodeSetCallback(const void *context,
    503                       UConverterFromUnicodeArgs * /*fromUArgs*/,
    504                       const UChar* /*codeUnits*/,
    505                       int32_t /*length*/,
    506                       UChar32 codePoint,
    507                       UConverterCallbackReason reason,
    508                       UErrorCode *pErrorCode) {
    509     if(reason<=UCNV_IRREGULAR) {
    510         ((UnicodeSet *)context)->remove(codePoint);  // the converter cannot convert this code point
    511         *pErrorCode=U_ZERO_ERROR;                    // skip
    512     }  // else ignore the reset, close and clone calls.
    513 }
    514 U_CDECL_END
    515 
    516 // Compare ucnv_getUnicodeSet() with the set of characters that can be converted.
    517 void
    518 ConversionTest::TestGetUnicodeSet2() {
    519     // Build a string with all code points.
    520     UChar32 cpLimit;
    521     int32_t s0Length;
    522     if(quick) {
    523         cpLimit=s0Length=0x10000;  // BMP only
    524     } else {
    525         cpLimit=0x110000;
    526         s0Length=0x10000+0x200000;  // BMP + surrogate pairs
    527     }
    528     UChar *s0=new UChar[s0Length];
    529     if(s0==NULL) {
    530         return;
    531     }
    532     UChar *s=s0;
    533     UChar32 c;
    534     UChar c2;
    535     // low BMP
    536     for(c=0; c<=0xd7ff; ++c) {
    537         *s++=(UChar)c;
    538     }
    539     // trail surrogates
    540     for(c=0xdc00; c<=0xdfff; ++c) {
    541         *s++=(UChar)c;
    542     }
    543     // lead surrogates
    544     // (after trails so that there is not even one surrogate pair in between)
    545     for(c=0xd800; c<=0xdbff; ++c) {
    546         *s++=(UChar)c;
    547     }
    548     // high BMP
    549     for(c=0xe000; c<=0xffff; ++c) {
    550         *s++=(UChar)c;
    551     }
    552     // supplementary code points = surrogate pairs
    553     if(cpLimit==0x110000) {
    554         for(c=0xd800; c<=0xdbff; ++c) {
    555             for(c2=0xdc00; c2<=0xdfff; ++c2) {
    556                 *s++=(UChar)c;
    557                 *s++=c2;
    558             }
    559         }
    560     }
    561 
    562     static const char *const cnvNames[]={
    563         "UTF-8",
    564         "UTF-7",
    565         "UTF-16",
    566         "US-ASCII",
    567         "ISO-8859-1",
    568         "windows-1252",
    569         "Shift-JIS",
    570         "ibm-1390",  // EBCDIC_STATEFUL table
    571         "ibm-16684",  // DBCS-only extension table based on EBCDIC_STATEFUL table
    572         "HZ",
    573         "ISO-2022-JP",
    574         "JIS7",
    575         "ISO-2022-CN",
    576         "ISO-2022-CN-EXT",
    577         "LMBCS"
    578     };
    579     LocalUConverterPointer cnv;
    580     char buffer[1024];
    581     int32_t i;
    582     for(i=0; i<UPRV_LENGTHOF(cnvNames); ++i) {
    583         UErrorCode errorCode=U_ZERO_ERROR;
    584         cnv.adoptInstead(cnv_open(cnvNames[i], errorCode));
    585         if(U_FAILURE(errorCode)) {
    586             errcheckln(errorCode, "failed to open converter %s - %s", cnvNames[i], u_errorName(errorCode));
    587             continue;
    588         }
    589         UnicodeSet expected;
    590         ucnv_setFromUCallBack(cnv.getAlias(), getUnicodeSetCallback, &expected, NULL, NULL, &errorCode);
    591         if(U_FAILURE(errorCode)) {
    592             errln("failed to set the callback on converter %s - %s", cnvNames[i], u_errorName(errorCode));
    593             continue;
    594         }
    595         UConverterUnicodeSet which;
    596         for(which=UCNV_ROUNDTRIP_SET; which<UCNV_SET_COUNT; which=(UConverterUnicodeSet)((int)which+1)) {
    597             if(which==UCNV_ROUNDTRIP_AND_FALLBACK_SET) {
    598                 ucnv_setFallback(cnv.getAlias(), TRUE);
    599             }
    600             expected.add(0, cpLimit-1);
    601             s=s0;
    602             UBool flush;
    603             do {
    604                 char *t=buffer;
    605                 flush=(UBool)(s==s0+s0Length);
    606                 ucnv_fromUnicode(cnv.getAlias(), &t, buffer+sizeof(buffer), (const UChar **)&s, s0+s0Length, NULL, flush, &errorCode);
    607                 if(U_FAILURE(errorCode)) {
    608                     if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
    609                         errorCode=U_ZERO_ERROR;
    610                         continue;
    611                     } else {
    612                         break;  // unexpected error, should not occur
    613                     }
    614                 }
    615             } while(!flush);
    616             UnicodeSet set;
    617             ucnv_getUnicodeSet(cnv.getAlias(), set.toUSet(), which, &errorCode);
    618             if(cpLimit<0x110000) {
    619                 set.remove(cpLimit, 0x10ffff);
    620             }
    621             if(which==UCNV_ROUNDTRIP_SET) {
    622                 // ignore PUA code points because they will be converted even if they
    623                 // are fallbacks and when other fallbacks are turned off,
    624                 // but ucnv_getUnicodeSet(UCNV_ROUNDTRIP_SET) delivers true roundtrips
    625                 expected.remove(0xe000, 0xf8ff);
    626                 expected.remove(0xf0000, 0xffffd);
    627                 expected.remove(0x100000, 0x10fffd);
    628                 set.remove(0xe000, 0xf8ff);
    629                 set.remove(0xf0000, 0xffffd);
    630                 set.remove(0x100000, 0x10fffd);
    631             }
    632             if(set!=expected) {
    633                 // First try to see if we have different sets because ucnv_getUnicodeSet()
    634                 // added strings: The above conversion method does not tell us what strings might be convertible.
    635                 // Remove strings from the set and compare again.
    636                 set.removeAllStrings();
    637             }
    638             if(set!=expected) {
    639                 UnicodeSet diffSet;
    640                 UnicodeString out;
    641 
    642                 // are there items that must be in the set but are not?
    643                 (diffSet=expected).removeAll(set);
    644                 if(!diffSet.isEmpty()) {
    645                     diffSet.toPattern(out, TRUE);
    646                     if(out.length()>100) {
    647                         out.replace(100, 0x7fffffff, ellipsis, UPRV_LENGTHOF(ellipsis));
    648                     }
    649                     errln("error: ucnv_getUnicodeSet(\"%s\") is missing items - which set: %d",
    650                             cnvNames[i], which);
    651                     errln(out);
    652                 }
    653 
    654                 // are there items that must not be in the set but are?
    655                 (diffSet=set).removeAll(expected);
    656                 if(!diffSet.isEmpty()) {
    657                     diffSet.toPattern(out, TRUE);
    658                     if(out.length()>100) {
    659                         out.replace(100, 0x7fffffff, ellipsis, UPRV_LENGTHOF(ellipsis));
    660                     }
    661                     errln("error: ucnv_getUnicodeSet(\"%s\") contains unexpected items - which set: %d",
    662                             cnvNames[i], which);
    663                     errln(out);
    664                 }
    665             }
    666         }
    667     }
    668 
    669     delete [] s0;
    670 }
    671 
    672 // Test all codepoints which has the default ignorable Unicode property are ignored if they have no mapping
    673 // If there are any failures, the hard coded list (IS_DEFAULT_IGNORABLE_CODE_POINT) in ucnv_err.c should be updated
    674 void
    675 ConversionTest::TestDefaultIgnorableCallback() {
    676     UErrorCode status = U_ZERO_ERROR;
    677     const char *cnv_name = "euc-jp-2007";
    678     const char *pattern_ignorable = "[:Default_Ignorable_Code_Point:]";
    679     const char *pattern_not_ignorable = "[:^Default_Ignorable_Code_Point:]";
    680 
    681     UnicodeSet *set_ignorable = new UnicodeSet(pattern_ignorable, status);
    682     if (U_FAILURE(status)) {
    683         dataerrln("Unable to create Unicodeset: %s - %s\n", pattern_ignorable, u_errorName(status));
    684         return;
    685     }
    686 
    687     UnicodeSet *set_not_ignorable = new UnicodeSet(pattern_not_ignorable, status);
    688     if (U_FAILURE(status)) {
    689         dataerrln("Unable to create Unicodeset: %s - %s\n", pattern_not_ignorable, u_errorName(status));
    690         return;
    691     }
    692 
    693     UConverter *cnv = cnv_open(cnv_name, status);
    694     if (U_FAILURE(status)) {
    695         dataerrln("Unable to open converter: %s - %s\n", cnv_name, u_errorName(status));
    696         return;
    697     }
    698 
    699     // set callback for the converter
    700     ucnv_setFromUCallBack(cnv, UCNV_FROM_U_CALLBACK_SUBSTITUTE, NULL, NULL, NULL, &status);
    701 
    702     UChar32 input[1];
    703     char output[10];
    704     int32_t outputLength;
    705 
    706     // test default ignorables are ignored
    707     int size = set_ignorable->size();
    708     for (int i = 0; i < size; i++) {
    709         status = U_ZERO_ERROR;
    710         outputLength= 0;
    711 
    712         input[0] = set_ignorable->charAt(i);
    713 
    714         outputLength = ucnv_fromUChars(cnv, output, 10, UnicodeString::fromUTF32(input, 1).getTerminatedBuffer(), -1, &status);
    715         if (U_FAILURE(status) || outputLength != 0) {
    716             errln("Ignorable code point: U+%04X not skipped as expected - %s", input[0], u_errorName(status));
    717         }
    718     }
    719 
    720     // test non-ignorables are not ignored
    721     size = set_not_ignorable->size();
    722     for (int i = 0; i < size; i++) {
    723         status = U_ZERO_ERROR;
    724         outputLength= 0;
    725 
    726         input[0] = set_not_ignorable->charAt(i);
    727 
    728         if (input[0] == 0) {
    729             continue;
    730         }
    731 
    732         outputLength = ucnv_fromUChars(cnv, output, 10, UnicodeString::fromUTF32(input, 1).getTerminatedBuffer(), -1, &status);
    733         if (U_FAILURE(status) || outputLength <= 0) {
    734             errln("Non-ignorable code point: U+%04X skipped unexpectedly - %s", input[0], u_errorName(status));
    735         }
    736     }
    737 
    738     ucnv_close(cnv);
    739     delete set_not_ignorable;
    740     delete set_ignorable;
    741 }
    742 
    743 void
    744 ConversionTest::TestUTF8ToUTF8Overflow() {
    745     IcuTestErrorCode errorCode(*this, "TestUTF8ToUTF8Overflow");
    746     LocalUConverterPointer cnv1(ucnv_open("UTF-8", errorCode));
    747     LocalUConverterPointer cnv2(ucnv_open("UTF-8", errorCode));
    748     static const char *text = "a";  // : 2 bytes
    749     const char *source = text;
    750     const char *sourceLimit = text + strlen(text);
    751     char result[20];
    752     char *target = result;
    753     const char *targetLimit = result + sizeof(result);
    754     UChar buffer16[20];
    755     UChar *pivotSource = buffer16;
    756     UChar *pivotTarget = buffer16;
    757     const UChar *pivotLimit = buffer16 + UPRV_LENGTHOF(buffer16);
    758     int32_t length;
    759 
    760     // Convert with insufficient target capacity.
    761     result[2] = 5;
    762     ucnv_convertEx(cnv2.getAlias(), cnv1.getAlias(),
    763                    &target, result + 2, &source, sourceLimit,
    764                    buffer16, &pivotSource, &pivotTarget, pivotLimit,
    765                    FALSE, FALSE, errorCode);
    766     assertEquals("overflow", U_BUFFER_OVERFLOW_ERROR, errorCode.reset());
    767     length = (int32_t)(target - result);
    768     assertEquals("number of bytes written", 2, length);
    769     assertEquals("next byte not clobbered", 5, result[2]);
    770 
    771     // Convert the rest and flush.
    772     ucnv_convertEx(cnv2.getAlias(), cnv1.getAlias(),
    773                    &target, targetLimit, &source, sourceLimit,
    774                    buffer16, &pivotSource, &pivotTarget, pivotLimit,
    775                    FALSE, TRUE, errorCode);
    776 
    777     assertSuccess("UTF-8->UTF-8", errorCode);
    778     length = (int32_t)(target - result);
    779     assertEquals("3 bytes", 3, length);
    780     if (length == 3) {
    781         assertTrue("result same as input", memcmp(text, result, length) == 0);
    782     }
    783 
    784     ucnv_reset(cnv1.getAlias());
    785     ucnv_reset(cnv2.getAlias());
    786     memset(result, 0, sizeof(result));
    787     static const char *text2 = "a";  // U+1F6B2 bicycle: 4 bytes
    788     source = text2;
    789     sourceLimit = text2 + strlen(text2);
    790     target = result;
    791     pivotSource = pivotTarget = buffer16;
    792 
    793     // Convert with insufficient target capacity.
    794     result[3] = 5;
    795     ucnv_convertEx(cnv2.getAlias(), cnv1.getAlias(),
    796                    &target, result + 3, &source, sourceLimit,
    797                    buffer16, &pivotSource, &pivotTarget, pivotLimit,
    798                    FALSE, FALSE, errorCode);
    799     assertEquals("text2 overflow", U_BUFFER_OVERFLOW_ERROR, errorCode.reset());
    800     length = (int32_t)(target - result);
    801     assertEquals("text2 number of bytes written", 3, length);
    802     assertEquals("text2 next byte not clobbered", 5, result[3]);
    803 
    804     // Convert the rest and flush.
    805     ucnv_convertEx(cnv2.getAlias(), cnv1.getAlias(),
    806                    &target, targetLimit, &source, sourceLimit,
    807                    buffer16, &pivotSource, &pivotTarget, pivotLimit,
    808                    FALSE, TRUE, errorCode);
    809 
    810     assertSuccess("text2 UTF-8->UTF-8", errorCode);
    811     length = (int32_t)(target - result);
    812     assertEquals("text2 5 bytes", 5, length);
    813     if (length == 5) {
    814         assertTrue("text2 result same as input", memcmp(text2, result, length) == 0);
    815     }
    816 
    817     ucnv_reset(cnv1.getAlias());
    818     ucnv_reset(cnv2.getAlias());
    819     memset(result, 0, sizeof(result));
    820     static const char *illFormed = "\xf1\x91\x93\x96\x91\x94";  // U+514D6 + two more trail bytes
    821     source = illFormed;
    822     sourceLimit = illFormed + strlen(illFormed);
    823     target = result;
    824     pivotSource = pivotTarget = buffer16;
    825 
    826     ucnv_setToUCallBack(cnv1.getAlias(), UCNV_TO_U_CALLBACK_STOP, nullptr, nullptr, nullptr, errorCode);
    827 
    828     // Convert only two bytes and flush (but expect failure).
    829     char errorBytes[10];
    830     int8_t errorLength;
    831     result[0] = 5;
    832     ucnv_convertEx(cnv2.getAlias(), cnv1.getAlias(),
    833                    &target, targetLimit, &source, source + 2,
    834                    buffer16, &pivotSource, &pivotTarget, pivotLimit,
    835                    FALSE, TRUE, errorCode);
    836     assertEquals("illFormed truncated", U_TRUNCATED_CHAR_FOUND, errorCode.reset());
    837     length = (int32_t)(target - result);
    838     assertEquals("illFormed number of bytes written", 0, length);
    839     errorLength = UPRV_LENGTHOF(errorBytes);
    840     ucnv_getInvalidChars(cnv1.getAlias(), errorBytes, &errorLength, errorCode);
    841     assertEquals("illFormed truncated errorLength", 2, (int32_t)errorLength);
    842     if (errorLength == 2) {
    843         assertEquals("illFormed truncated errorBytes", 0xf191,
    844                      ((int32_t)(uint8_t)errorBytes[0] << 8) | (uint8_t)errorBytes[1]);
    845     }
    846 
    847     // Continue conversion starting with a trail byte.
    848     ucnv_convertEx(cnv2.getAlias(), cnv1.getAlias(),
    849                    &target, targetLimit, &source, sourceLimit,
    850                    buffer16, &pivotSource, &pivotTarget, pivotLimit,
    851                    FALSE, TRUE, errorCode);
    852 
    853     assertEquals("illFormed trail byte", U_ILLEGAL_CHAR_FOUND, errorCode.reset());
    854     length = (int32_t)(target - result);
    855     assertEquals("illFormed trail byte number of bytes written", 0, length);
    856     errorLength = UPRV_LENGTHOF(errorBytes);
    857     ucnv_getInvalidChars(cnv1.getAlias(), errorBytes, &errorLength, errorCode);
    858     assertEquals("illFormed trail byte errorLength", 1, (int32_t)errorLength);
    859     if (errorLength == 1) {
    860         assertEquals("illFormed trail byte errorBytes", 0x93, (int32_t)(uint8_t)errorBytes[0]);
    861     }
    862 }
    863 
    864 // open testdata or ICU data converter ------------------------------------- ***
    865 
    866 UConverter *
    867 ConversionTest::cnv_open(const char *name, UErrorCode &errorCode) {
    868     if(name!=NULL && *name=='+') {
    869         // Converter names that start with '+' are ignored in ICU4J tests.
    870         ++name;
    871     }
    872     if(name!=NULL && *name=='*') {
    873         /* loadTestData(): set the data directory */
    874         return ucnv_openPackage(loadTestData(errorCode), name+1, &errorCode);
    875     } else {
    876         return ucnv_open(name, &errorCode);
    877     }
    878 }
    879 
    880 // output helpers ---------------------------------------------------------- ***
    881 
    882 static inline char
    883 hexDigit(uint8_t digit) {
    884     return digit<=9 ? (char)('0'+digit) : (char)('a'-10+digit);
    885 }
    886 
    887 static char *
    888 printBytes(const uint8_t *bytes, int32_t length, char *out) {
    889     uint8_t b;
    890 
    891     if(length>0) {
    892         b=*bytes++;
    893         --length;
    894         *out++=hexDigit((uint8_t)(b>>4));
    895         *out++=hexDigit((uint8_t)(b&0xf));
    896     }
    897 
    898     while(length>0) {
    899         b=*bytes++;
    900         --length;
    901         *out++=' ';
    902         *out++=hexDigit((uint8_t)(b>>4));
    903         *out++=hexDigit((uint8_t)(b&0xf));
    904     }
    905     *out++=0;
    906     return out;
    907 }
    908 
    909 static char *
    910 printUnicode(const UChar *unicode, int32_t length, char *out) {
    911     UChar32 c;
    912     int32_t i;
    913 
    914     for(i=0; i<length;) {
    915         if(i>0) {
    916             *out++=' ';
    917         }
    918         U16_NEXT(unicode, i, length, c);
    919         // write 4..6 digits
    920         if(c>=0x100000) {
    921             *out++='1';
    922         }
    923         if(c>=0x10000) {
    924             *out++=hexDigit((uint8_t)((c>>16)&0xf));
    925         }
    926         *out++=hexDigit((uint8_t)((c>>12)&0xf));
    927         *out++=hexDigit((uint8_t)((c>>8)&0xf));
    928         *out++=hexDigit((uint8_t)((c>>4)&0xf));
    929         *out++=hexDigit((uint8_t)(c&0xf));
    930     }
    931     *out++=0;
    932     return out;
    933 }
    934 
    935 static char *
    936 printOffsets(const int32_t *offsets, int32_t length, char *out) {
    937     int32_t i, o, d;
    938 
    939     if(offsets==NULL) {
    940         length=0;
    941     }
    942 
    943     for(i=0; i<length; ++i) {
    944         if(i>0) {
    945             *out++=' ';
    946         }
    947         o=offsets[i];
    948 
    949         // print all offsets with 2 characters each (-x, -9..99, xx)
    950         if(o<-9) {
    951             *out++='-';
    952             *out++='x';
    953         } else if(o<0) {
    954             *out++='-';
    955             *out++=(char)('0'-o);
    956         } else if(o<=99) {
    957             *out++=(d=o/10)==0 ? ' ' : (char)('0'+d);
    958             *out++=(char)('0'+o%10);
    959         } else /* o>99 */ {
    960             *out++='x';
    961             *out++='x';
    962         }
    963     }
    964     *out++=0;
    965     return out;
    966 }
    967 
    968 // toUnicode test worker functions ----------------------------------------- ***
    969 
    970 static int32_t
    971 stepToUnicode(ConversionCase &cc, UConverter *cnv,
    972               UChar *result, int32_t resultCapacity,
    973               int32_t *resultOffsets, /* also resultCapacity */
    974               int32_t step,
    975               UErrorCode *pErrorCode) {
    976     const char *source, *sourceLimit, *bytesLimit;
    977     UChar *target, *targetLimit, *resultLimit;
    978     UBool flush;
    979 
    980     source=(const char *)cc.bytes;
    981     target=result;
    982     bytesLimit=source+cc.bytesLength;
    983     resultLimit=result+resultCapacity;
    984 
    985     if(step>=0) {
    986         // call ucnv_toUnicode() with in/out buffers no larger than (step) at a time
    987         // move only one buffer (in vs. out) at a time to be extra mean
    988         // step==0 performs bulk conversion and generates offsets
    989 
    990         // initialize the partial limits for the loop
    991         if(step==0) {
    992             // use the entire buffers
    993             sourceLimit=bytesLimit;
    994             targetLimit=resultLimit;
    995             flush=cc.finalFlush;
    996         } else {
    997             // start with empty partial buffers
    998             sourceLimit=source;
    999             targetLimit=target;
   1000             flush=FALSE;
   1001 
   1002             // output offsets only for bulk conversion
   1003             resultOffsets=NULL;
   1004         }
   1005 
   1006         for(;;) {
   1007             // resetting the opposite conversion direction must not affect this one
   1008             ucnv_resetFromUnicode(cnv);
   1009 
   1010             // convert
   1011             ucnv_toUnicode(cnv,
   1012                 &target, targetLimit,
   1013                 &source, sourceLimit,
   1014                 resultOffsets,
   1015                 flush, pErrorCode);
   1016 
   1017             // check pointers and errors
   1018             if(source>sourceLimit || target>targetLimit) {
   1019                 *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1020                 break;
   1021             } else if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
   1022                 if(target!=targetLimit) {
   1023                     // buffer overflow must only be set when the target is filled
   1024                     *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1025                     break;
   1026                 } else if(targetLimit==resultLimit) {
   1027                     // not just a partial overflow
   1028                     break;
   1029                 }
   1030 
   1031                 // the partial target is filled, set a new limit, reset the error and continue
   1032                 targetLimit=(resultLimit-target)>=step ? target+step : resultLimit;
   1033                 *pErrorCode=U_ZERO_ERROR;
   1034             } else if(U_FAILURE(*pErrorCode)) {
   1035                 // some other error occurred, done
   1036                 break;
   1037             } else {
   1038                 if(source!=sourceLimit) {
   1039                     // when no error occurs, then the input must be consumed
   1040                     *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1041                     break;
   1042                 }
   1043 
   1044                 if(sourceLimit==bytesLimit) {
   1045                     // we are done
   1046                     break;
   1047                 }
   1048 
   1049                 // the partial conversion succeeded, set a new limit and continue
   1050                 sourceLimit=(bytesLimit-source)>=step ? source+step : bytesLimit;
   1051                 flush=(UBool)(cc.finalFlush && sourceLimit==bytesLimit);
   1052             }
   1053         }
   1054     } else /* step<0 */ {
   1055         /*
   1056          * step==-1: call only ucnv_getNextUChar()
   1057          * otherwise alternate between ucnv_toUnicode() and ucnv_getNextUChar()
   1058          *   if step==-2 or -3, then give ucnv_toUnicode() the whole remaining input,
   1059          *   else give it at most (-step-2)/2 bytes
   1060          */
   1061         UChar32 c;
   1062 
   1063         // end the loop by getting an index out of bounds error
   1064         for(;;) {
   1065             // resetting the opposite conversion direction must not affect this one
   1066             ucnv_resetFromUnicode(cnv);
   1067 
   1068             // convert
   1069             if((step&1)!=0 /* odd: -1, -3, -5, ... */) {
   1070                 sourceLimit=source; // use sourceLimit not as a real limit
   1071                                     // but to remember the pre-getNextUChar source pointer
   1072                 c=ucnv_getNextUChar(cnv, &source, bytesLimit, pErrorCode);
   1073 
   1074                 // check pointers and errors
   1075                 if(*pErrorCode==U_INDEX_OUTOFBOUNDS_ERROR) {
   1076                     if(source!=bytesLimit) {
   1077                         *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1078                     } else {
   1079                         *pErrorCode=U_ZERO_ERROR;
   1080                     }
   1081                     break;
   1082                 } else if(U_FAILURE(*pErrorCode)) {
   1083                     break;
   1084                 }
   1085                 // source may not move if c is from previous overflow
   1086 
   1087                 if(target==resultLimit) {
   1088                     *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
   1089                     break;
   1090                 }
   1091                 if(c<=0xffff) {
   1092                     *target++=(UChar)c;
   1093                 } else {
   1094                     *target++=U16_LEAD(c);
   1095                     if(target==resultLimit) {
   1096                         *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
   1097                         break;
   1098                     }
   1099                     *target++=U16_TRAIL(c);
   1100                 }
   1101 
   1102                 // alternate between -n-1 and -n but leave -1 alone
   1103                 if(step<-1) {
   1104                     ++step;
   1105                 }
   1106             } else /* step is even */ {
   1107                 // allow only one UChar output
   1108                 targetLimit=target<resultLimit ? target+1 : resultLimit;
   1109 
   1110                 // as with ucnv_getNextUChar(), we always flush (if we go to bytesLimit)
   1111                 // and never output offsets
   1112                 if(step==-2) {
   1113                     sourceLimit=bytesLimit;
   1114                 } else {
   1115                     sourceLimit=source+(-step-2)/2;
   1116                     if(sourceLimit>bytesLimit) {
   1117                         sourceLimit=bytesLimit;
   1118                     }
   1119                 }
   1120 
   1121                 ucnv_toUnicode(cnv,
   1122                     &target, targetLimit,
   1123                     &source, sourceLimit,
   1124                     NULL, (UBool)(sourceLimit==bytesLimit), pErrorCode);
   1125 
   1126                 // check pointers and errors
   1127                 if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
   1128                     if(target!=targetLimit) {
   1129                         // buffer overflow must only be set when the target is filled
   1130                         *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1131                         break;
   1132                     } else if(targetLimit==resultLimit) {
   1133                         // not just a partial overflow
   1134                         break;
   1135                     }
   1136 
   1137                     // the partial target is filled, set a new limit and continue
   1138                     *pErrorCode=U_ZERO_ERROR;
   1139                 } else if(U_FAILURE(*pErrorCode)) {
   1140                     // some other error occurred, done
   1141                     break;
   1142                 } else {
   1143                     if(source!=sourceLimit) {
   1144                         // when no error occurs, then the input must be consumed
   1145                         *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1146                         break;
   1147                     }
   1148 
   1149                     // we are done (flush==TRUE) but we continue, to get the index out of bounds error above
   1150                 }
   1151 
   1152                 --step;
   1153             }
   1154         }
   1155     }
   1156 
   1157     return (int32_t)(target-result);
   1158 }
   1159 
   1160 UBool
   1161 ConversionTest::ToUnicodeCase(ConversionCase &cc, UConverterToUCallback callback, const char *option) {
   1162     // open the converter
   1163     IcuTestErrorCode errorCode(*this, "ToUnicodeCase");
   1164     LocalUConverterPointer cnv(cnv_open(cc.charset, errorCode));
   1165     // with no data, the above crashes with "pointer being freed was not allocated" for charset "x11-compound-text", see #13078
   1166     if(errorCode.isFailure()) {
   1167         errcheckln(errorCode, "toUnicode[%d](%s cb=\"%s\" fb=%d flush=%d) ucnv_open() failed - %s",
   1168                 cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, errorCode.errorName());
   1169         errorCode.reset();
   1170         return FALSE;
   1171     }
   1172 
   1173     // set the callback
   1174     if(callback!=NULL) {
   1175         ucnv_setToUCallBack(cnv.getAlias(), callback, option, NULL, NULL, errorCode);
   1176         if(U_FAILURE(errorCode)) {
   1177             errln("toUnicode[%d](%s cb=\"%s\" fb=%d flush=%d) ucnv_setToUCallBack() failed - %s",
   1178                     cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, u_errorName(errorCode));
   1179             return FALSE;
   1180         }
   1181     }
   1182 
   1183     int32_t resultOffsets[256];
   1184     UChar result[256];
   1185     int32_t resultLength;
   1186     UBool ok;
   1187 
   1188     static const struct {
   1189         int32_t step;
   1190         const char *name;
   1191     } steps[]={
   1192         { 0, "bulk" }, // must be first for offsets to be checked
   1193         { 1, "step=1" },
   1194         { 3, "step=3" },
   1195         { 7, "step=7" },
   1196         { -1, "getNext" },
   1197         { -2, "toU(bulk)+getNext" },
   1198         { -3, "getNext+toU(bulk)" },
   1199         { -4, "toU(1)+getNext" },
   1200         { -5, "getNext+toU(1)" },
   1201         { -12, "toU(5)+getNext" },
   1202         { -13, "getNext+toU(5)" },
   1203     };
   1204     int32_t i, step;
   1205 
   1206     ok=TRUE;
   1207     for(i=0; i<UPRV_LENGTHOF(steps) && ok; ++i) {
   1208         step=steps[i].step;
   1209         if(step<0 && !cc.finalFlush) {
   1210             // skip ucnv_getNextUChar() if !finalFlush because
   1211             // ucnv_getNextUChar() always implies flush
   1212             continue;
   1213         }
   1214         if(step!=0) {
   1215             // bulk test is first, then offsets are not checked any more
   1216             cc.offsets=NULL;
   1217         }
   1218         else {
   1219             memset(resultOffsets, -1, UPRV_LENGTHOF(resultOffsets));
   1220         }
   1221         memset(result, -1, UPRV_LENGTHOF(result));
   1222         errorCode.reset();
   1223         resultLength=stepToUnicode(cc, cnv.getAlias(),
   1224                                 result, UPRV_LENGTHOF(result),
   1225                                 step==0 ? resultOffsets : NULL,
   1226                                 step, errorCode);
   1227         ok=checkToUnicode(
   1228                 cc, cnv.getAlias(), steps[i].name,
   1229                 result, resultLength,
   1230                 cc.offsets!=NULL ? resultOffsets : NULL,
   1231                 errorCode);
   1232         if(errorCode.isFailure() || !cc.finalFlush) {
   1233             // reset if an error occurred or we did not flush
   1234             // otherwise do nothing to make sure that flushing resets
   1235             ucnv_resetToUnicode(cnv.getAlias());
   1236         }
   1237         if (cc.offsets != NULL && resultOffsets[resultLength] != -1) {
   1238             errln("toUnicode[%d](%s) Conversion wrote too much to offsets at index %d",
   1239                 cc.caseNr, cc.charset, resultLength);
   1240         }
   1241         if (result[resultLength] != (UChar)-1) {
   1242             errln("toUnicode[%d](%s) Conversion wrote too much to result at index %d",
   1243                 cc.caseNr, cc.charset, resultLength);
   1244         }
   1245     }
   1246 
   1247     // not a real loop, just a convenience for breaking out of the block
   1248     while(ok && cc.finalFlush) {
   1249         // test ucnv_toUChars()
   1250         memset(result, 0, sizeof(result));
   1251 
   1252         errorCode.reset();
   1253         resultLength=ucnv_toUChars(cnv.getAlias(),
   1254                         result, UPRV_LENGTHOF(result),
   1255                         (const char *)cc.bytes, cc.bytesLength,
   1256                         errorCode);
   1257         ok=checkToUnicode(
   1258                 cc, cnv.getAlias(), "toUChars",
   1259                 result, resultLength,
   1260                 NULL,
   1261                 errorCode);
   1262         if(!ok) {
   1263             break;
   1264         }
   1265 
   1266         // test preflighting
   1267         // keep the correct result for simple checking
   1268         errorCode.reset();
   1269         resultLength=ucnv_toUChars(cnv.getAlias(),
   1270                         NULL, 0,
   1271                         (const char *)cc.bytes, cc.bytesLength,
   1272                         errorCode);
   1273         if(errorCode.get()==U_STRING_NOT_TERMINATED_WARNING || errorCode.get()==U_BUFFER_OVERFLOW_ERROR) {
   1274             errorCode.reset();
   1275         }
   1276         ok=checkToUnicode(
   1277                 cc, cnv.getAlias(), "preflight toUChars",
   1278                 result, resultLength,
   1279                 NULL,
   1280                 errorCode);
   1281         break;
   1282     }
   1283 
   1284     errorCode.reset();  // all errors have already been reported
   1285     return ok;
   1286 }
   1287 
   1288 UBool
   1289 ConversionTest::checkToUnicode(ConversionCase &cc, UConverter *cnv, const char *name,
   1290                                const UChar *result, int32_t resultLength,
   1291                                const int32_t *resultOffsets,
   1292                                UErrorCode resultErrorCode) {
   1293     char resultInvalidChars[8];
   1294     int8_t resultInvalidLength;
   1295     UErrorCode errorCode;
   1296 
   1297     const char *msg;
   1298 
   1299     // reset the message; NULL will mean "ok"
   1300     msg=NULL;
   1301 
   1302     errorCode=U_ZERO_ERROR;
   1303     resultInvalidLength=sizeof(resultInvalidChars);
   1304     ucnv_getInvalidChars(cnv, resultInvalidChars, &resultInvalidLength, &errorCode);
   1305     if(U_FAILURE(errorCode)) {
   1306         errln("toUnicode[%d](%s cb=\"%s\" fb=%d flush=%d %s) ucnv_getInvalidChars() failed - %s",
   1307                 cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, name, u_errorName(errorCode));
   1308         return FALSE;
   1309     }
   1310 
   1311     // check everything that might have gone wrong
   1312     if(cc.unicodeLength!=resultLength) {
   1313         msg="wrong result length";
   1314     } else if(0!=u_memcmp(cc.unicode, result, cc.unicodeLength)) {
   1315         msg="wrong result string";
   1316     } else if(cc.offsets!=NULL && 0!=memcmp(cc.offsets, resultOffsets, cc.unicodeLength*sizeof(*cc.offsets))) {
   1317         msg="wrong offsets";
   1318     } else if(cc.outErrorCode!=resultErrorCode) {
   1319         msg="wrong error code";
   1320     } else if(cc.invalidLength!=resultInvalidLength) {
   1321         msg="wrong length of last invalid input";
   1322     } else if(0!=memcmp(cc.invalidChars, resultInvalidChars, cc.invalidLength)) {
   1323         msg="wrong last invalid input";
   1324     }
   1325 
   1326     if(msg==NULL) {
   1327         return TRUE;
   1328     } else {
   1329         char buffer[2000]; // one buffer for all strings
   1330         char *s, *bytesString, *unicodeString, *resultString,
   1331             *offsetsString, *resultOffsetsString,
   1332             *invalidCharsString, *resultInvalidCharsString;
   1333 
   1334         bytesString=s=buffer;
   1335         s=printBytes(cc.bytes, cc.bytesLength, bytesString);
   1336         s=printUnicode(cc.unicode, cc.unicodeLength, unicodeString=s);
   1337         s=printUnicode(result, resultLength, resultString=s);
   1338         s=printOffsets(cc.offsets, cc.unicodeLength, offsetsString=s);
   1339         s=printOffsets(resultOffsets, resultLength, resultOffsetsString=s);
   1340         s=printBytes(cc.invalidChars, cc.invalidLength, invalidCharsString=s);
   1341         s=printBytes((uint8_t *)resultInvalidChars, resultInvalidLength, resultInvalidCharsString=s);
   1342 
   1343         if((s-buffer)>(int32_t)sizeof(buffer)) {
   1344             errln("toUnicode[%d](%s cb=\"%s\" fb=%d flush=%d %s) fatal error: checkToUnicode() test output buffer overflow writing %d chars\n",
   1345                     cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, name, (int)(s-buffer));
   1346             exit(1);
   1347         }
   1348 
   1349         errln("toUnicode[%d](%s cb=\"%s\" fb=%d flush=%d %s) failed: %s\n"
   1350               "  bytes <%s>[%d]\n"
   1351               " expected <%s>[%d]\n"
   1352               "  result  <%s>[%d]\n"
   1353               " offsets         <%s>\n"
   1354               "  result offsets <%s>\n"
   1355               " error code expected %s got %s\n"
   1356               "  invalidChars expected <%s> got <%s>\n",
   1357               cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, name, msg,
   1358               bytesString, cc.bytesLength,
   1359               unicodeString, cc.unicodeLength,
   1360               resultString, resultLength,
   1361               offsetsString,
   1362               resultOffsetsString,
   1363               u_errorName(cc.outErrorCode), u_errorName(resultErrorCode),
   1364               invalidCharsString, resultInvalidCharsString);
   1365 
   1366         return FALSE;
   1367     }
   1368 }
   1369 
   1370 // fromUnicode test worker functions --------------------------------------- ***
   1371 
   1372 static int32_t
   1373 stepFromUTF8(ConversionCase &cc,
   1374              UConverter *utf8Cnv, UConverter *cnv,
   1375              char *result, int32_t resultCapacity,
   1376              int32_t step,
   1377              UErrorCode *pErrorCode) {
   1378     const char *source, *sourceLimit, *utf8Limit;
   1379     UChar pivotBuffer[32];
   1380     UChar *pivotSource, *pivotTarget, *pivotLimit;
   1381     char *target, *targetLimit, *resultLimit;
   1382     UBool flush;
   1383 
   1384     source=cc.utf8;
   1385     pivotSource=pivotTarget=pivotBuffer;
   1386     target=result;
   1387     utf8Limit=source+cc.utf8Length;
   1388     resultLimit=result+resultCapacity;
   1389 
   1390     // call ucnv_convertEx() with in/out buffers no larger than (step) at a time
   1391     // move only one buffer (in vs. out) at a time to be extra mean
   1392     // step==0 performs bulk conversion
   1393 
   1394     // initialize the partial limits for the loop
   1395     if(step==0) {
   1396         // use the entire buffers
   1397         sourceLimit=utf8Limit;
   1398         targetLimit=resultLimit;
   1399         flush=cc.finalFlush;
   1400 
   1401         pivotLimit=pivotBuffer+UPRV_LENGTHOF(pivotBuffer);
   1402     } else {
   1403         // start with empty partial buffers
   1404         sourceLimit=source;
   1405         targetLimit=target;
   1406         flush=FALSE;
   1407 
   1408         // empty pivot is not allowed, make it of length step
   1409         pivotLimit=pivotBuffer+step;
   1410     }
   1411 
   1412     for(;;) {
   1413         // resetting the opposite conversion direction must not affect this one
   1414         ucnv_resetFromUnicode(utf8Cnv);
   1415         ucnv_resetToUnicode(cnv);
   1416 
   1417         // convert
   1418         ucnv_convertEx(cnv, utf8Cnv,
   1419             &target, targetLimit,
   1420             &source, sourceLimit,
   1421             pivotBuffer, &pivotSource, &pivotTarget, pivotLimit,
   1422             FALSE, flush, pErrorCode);
   1423 
   1424         // check pointers and errors
   1425         if(source>sourceLimit || target>targetLimit) {
   1426             *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1427             break;
   1428         } else if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
   1429             if(target!=targetLimit) {
   1430                 // buffer overflow must only be set when the target is filled
   1431                 *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1432                 break;
   1433             } else if(targetLimit==resultLimit) {
   1434                 // not just a partial overflow
   1435                 break;
   1436             }
   1437 
   1438             // the partial target is filled, set a new limit, reset the error and continue
   1439             targetLimit=(resultLimit-target)>=step ? target+step : resultLimit;
   1440             *pErrorCode=U_ZERO_ERROR;
   1441         } else if(U_FAILURE(*pErrorCode)) {
   1442             if(pivotSource==pivotBuffer) {
   1443                 // toUnicode error, should not occur
   1444                 // toUnicode errors are tested in cintltst TestConvertExFromUTF8()
   1445                 break;
   1446             } else {
   1447                 // fromUnicode error
   1448                 // some other error occurred, done
   1449                 break;
   1450             }
   1451         } else {
   1452             if(source!=sourceLimit) {
   1453                 // when no error occurs, then the input must be consumed
   1454                 *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1455                 break;
   1456             }
   1457 
   1458             if(sourceLimit==utf8Limit) {
   1459                 // we are done
   1460                 if(*pErrorCode==U_STRING_NOT_TERMINATED_WARNING) {
   1461                     // ucnv_convertEx() warns about not terminating the output
   1462                     // but ucnv_fromUnicode() does not and so
   1463                     // checkFromUnicode() does not expect it
   1464                     *pErrorCode=U_ZERO_ERROR;
   1465                 }
   1466                 break;
   1467             }
   1468 
   1469             // the partial conversion succeeded, set a new limit and continue
   1470             sourceLimit=(utf8Limit-source)>=step ? source+step : utf8Limit;
   1471             flush=(UBool)(cc.finalFlush && sourceLimit==utf8Limit);
   1472         }
   1473     }
   1474 
   1475     return (int32_t)(target-result);
   1476 }
   1477 
   1478 static int32_t
   1479 stepFromUnicode(ConversionCase &cc, UConverter *cnv,
   1480                 char *result, int32_t resultCapacity,
   1481                 int32_t *resultOffsets, /* also resultCapacity */
   1482                 int32_t step,
   1483                 UErrorCode *pErrorCode) {
   1484     const UChar *source, *sourceLimit, *unicodeLimit;
   1485     char *target, *targetLimit, *resultLimit;
   1486     UBool flush;
   1487 
   1488     source=cc.unicode;
   1489     target=result;
   1490     unicodeLimit=source+cc.unicodeLength;
   1491     resultLimit=result+resultCapacity;
   1492 
   1493     // call ucnv_fromUnicode() with in/out buffers no larger than (step) at a time
   1494     // move only one buffer (in vs. out) at a time to be extra mean
   1495     // step==0 performs bulk conversion and generates offsets
   1496 
   1497     // initialize the partial limits for the loop
   1498     if(step==0) {
   1499         // use the entire buffers
   1500         sourceLimit=unicodeLimit;
   1501         targetLimit=resultLimit;
   1502         flush=cc.finalFlush;
   1503     } else {
   1504         // start with empty partial buffers
   1505         sourceLimit=source;
   1506         targetLimit=target;
   1507         flush=FALSE;
   1508 
   1509         // output offsets only for bulk conversion
   1510         resultOffsets=NULL;
   1511     }
   1512 
   1513     for(;;) {
   1514         // resetting the opposite conversion direction must not affect this one
   1515         ucnv_resetToUnicode(cnv);
   1516 
   1517         // convert
   1518         ucnv_fromUnicode(cnv,
   1519             &target, targetLimit,
   1520             &source, sourceLimit,
   1521             resultOffsets,
   1522             flush, pErrorCode);
   1523 
   1524         // check pointers and errors
   1525         if(source>sourceLimit || target>targetLimit) {
   1526             *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1527             break;
   1528         } else if(*pErrorCode==U_BUFFER_OVERFLOW_ERROR) {
   1529             if(target!=targetLimit) {
   1530                 // buffer overflow must only be set when the target is filled
   1531                 *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1532                 break;
   1533             } else if(targetLimit==resultLimit) {
   1534                 // not just a partial overflow
   1535                 break;
   1536             }
   1537 
   1538             // the partial target is filled, set a new limit, reset the error and continue
   1539             targetLimit=(resultLimit-target)>=step ? target+step : resultLimit;
   1540             *pErrorCode=U_ZERO_ERROR;
   1541         } else if(U_FAILURE(*pErrorCode)) {
   1542             // some other error occurred, done
   1543             break;
   1544         } else {
   1545             if(source!=sourceLimit) {
   1546                 // when no error occurs, then the input must be consumed
   1547                 *pErrorCode=U_INTERNAL_PROGRAM_ERROR;
   1548                 break;
   1549             }
   1550 
   1551             if(sourceLimit==unicodeLimit) {
   1552                 // we are done
   1553                 break;
   1554             }
   1555 
   1556             // the partial conversion succeeded, set a new limit and continue
   1557             sourceLimit=(unicodeLimit-source)>=step ? source+step : unicodeLimit;
   1558             flush=(UBool)(cc.finalFlush && sourceLimit==unicodeLimit);
   1559         }
   1560     }
   1561 
   1562     return (int32_t)(target-result);
   1563 }
   1564 
   1565 UBool
   1566 ConversionTest::FromUnicodeCase(ConversionCase &cc, UConverterFromUCallback callback, const char *option) {
   1567     UConverter *cnv;
   1568     UErrorCode errorCode;
   1569 
   1570     // open the converter
   1571     errorCode=U_ZERO_ERROR;
   1572     cnv=cnv_open(cc.charset, errorCode);
   1573     if(U_FAILURE(errorCode)) {
   1574         errcheckln(errorCode, "fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d) ucnv_open() failed - %s",
   1575                 cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, u_errorName(errorCode));
   1576         return FALSE;
   1577     }
   1578     ucnv_resetToUnicode(utf8Cnv);
   1579 
   1580     // set the callback
   1581     if(callback!=NULL) {
   1582         ucnv_setFromUCallBack(cnv, callback, option, NULL, NULL, &errorCode);
   1583         if(U_FAILURE(errorCode)) {
   1584             errln("fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d) ucnv_setFromUCallBack() failed - %s",
   1585                     cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, u_errorName(errorCode));
   1586             ucnv_close(cnv);
   1587             return FALSE;
   1588         }
   1589     }
   1590 
   1591     // set the fallbacks flag
   1592     // TODO change with Jitterbug 2401, then add a similar call for toUnicode too
   1593     ucnv_setFallback(cnv, cc.fallbacks);
   1594 
   1595     // set the subchar
   1596     int32_t length;
   1597 
   1598     if(cc.setSub>0) {
   1599         length=(int32_t)strlen(cc.subchar);
   1600         ucnv_setSubstChars(cnv, cc.subchar, (int8_t)length, &errorCode);
   1601         if(U_FAILURE(errorCode)) {
   1602             errln("fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d) ucnv_setSubstChars() failed - %s",
   1603                     cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, u_errorName(errorCode));
   1604             ucnv_close(cnv);
   1605             return FALSE;
   1606         }
   1607     } else if(cc.setSub<0) {
   1608         ucnv_setSubstString(cnv, cc.subString, -1, &errorCode);
   1609         if(U_FAILURE(errorCode)) {
   1610             errln("fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d) ucnv_setSubstString() failed - %s",
   1611                     cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, u_errorName(errorCode));
   1612             ucnv_close(cnv);
   1613             return FALSE;
   1614         }
   1615     }
   1616 
   1617     // convert unicode to utf8
   1618     char utf8[256];
   1619     cc.utf8=utf8;
   1620     u_strToUTF8(utf8, UPRV_LENGTHOF(utf8), &cc.utf8Length,
   1621                 cc.unicode, cc.unicodeLength,
   1622                 &errorCode);
   1623     if(U_FAILURE(errorCode)) {
   1624         // skip UTF-8 testing of a string with an unpaired surrogate,
   1625         // or of one that's too long
   1626         // toUnicode errors are tested in cintltst TestConvertExFromUTF8()
   1627         cc.utf8Length=-1;
   1628     }
   1629 
   1630     int32_t resultOffsets[256];
   1631     char result[256];
   1632     int32_t resultLength;
   1633     UBool ok;
   1634 
   1635     static const struct {
   1636         int32_t step;
   1637         const char *name, *utf8Name;
   1638     } steps[]={
   1639         { 0, "bulk",   "utf8" }, // must be first for offsets to be checked
   1640         { 1, "step=1", "utf8 step=1" },
   1641         { 3, "step=3", "utf8 step=3" },
   1642         { 7, "step=7", "utf8 step=7" }
   1643     };
   1644     int32_t i, step;
   1645 
   1646     ok=TRUE;
   1647     for(i=0; i<UPRV_LENGTHOF(steps) && ok; ++i) {
   1648         step=steps[i].step;
   1649         memset(resultOffsets, -1, UPRV_LENGTHOF(resultOffsets));
   1650         memset(result, -1, UPRV_LENGTHOF(result));
   1651         errorCode=U_ZERO_ERROR;
   1652         resultLength=stepFromUnicode(cc, cnv,
   1653                                 result, UPRV_LENGTHOF(result),
   1654                                 step==0 ? resultOffsets : NULL,
   1655                                 step, &errorCode);
   1656         ok=checkFromUnicode(
   1657                 cc, cnv, steps[i].name,
   1658                 (uint8_t *)result, resultLength,
   1659                 cc.offsets!=NULL ? resultOffsets : NULL,
   1660                 errorCode);
   1661         if(U_FAILURE(errorCode) || !cc.finalFlush) {
   1662             // reset if an error occurred or we did not flush
   1663             // otherwise do nothing to make sure that flushing resets
   1664             ucnv_resetFromUnicode(cnv);
   1665         }
   1666         if (resultOffsets[resultLength] != -1) {
   1667             errln("fromUnicode[%d](%s) Conversion wrote too much to offsets at index %d",
   1668                 cc.caseNr, cc.charset, resultLength);
   1669         }
   1670         if (result[resultLength] != (char)-1) {
   1671             errln("fromUnicode[%d](%s) Conversion wrote too much to result at index %d",
   1672                 cc.caseNr, cc.charset, resultLength);
   1673         }
   1674 
   1675         // bulk test is first, then offsets are not checked any more
   1676         cc.offsets=NULL;
   1677 
   1678         // test direct conversion from UTF-8
   1679         if(cc.utf8Length>=0) {
   1680             errorCode=U_ZERO_ERROR;
   1681             resultLength=stepFromUTF8(cc, utf8Cnv, cnv,
   1682                                     result, UPRV_LENGTHOF(result),
   1683                                     step, &errorCode);
   1684             ok=checkFromUnicode(
   1685                     cc, cnv, steps[i].utf8Name,
   1686                     (uint8_t *)result, resultLength,
   1687                     NULL,
   1688                     errorCode);
   1689             if(U_FAILURE(errorCode) || !cc.finalFlush) {
   1690                 // reset if an error occurred or we did not flush
   1691                 // otherwise do nothing to make sure that flushing resets
   1692                 ucnv_resetToUnicode(utf8Cnv);
   1693                 ucnv_resetFromUnicode(cnv);
   1694             }
   1695         }
   1696     }
   1697 
   1698     // not a real loop, just a convenience for breaking out of the block
   1699     while(ok && cc.finalFlush) {
   1700         // test ucnv_fromUChars()
   1701         memset(result, 0, sizeof(result));
   1702 
   1703         errorCode=U_ZERO_ERROR;
   1704         resultLength=ucnv_fromUChars(cnv,
   1705                         result, UPRV_LENGTHOF(result),
   1706                         cc.unicode, cc.unicodeLength,
   1707                         &errorCode);
   1708         ok=checkFromUnicode(
   1709                 cc, cnv, "fromUChars",
   1710                 (uint8_t *)result, resultLength,
   1711                 NULL,
   1712                 errorCode);
   1713         if(!ok) {
   1714             break;
   1715         }
   1716 
   1717         // test preflighting
   1718         // keep the correct result for simple checking
   1719         errorCode=U_ZERO_ERROR;
   1720         resultLength=ucnv_fromUChars(cnv,
   1721                         NULL, 0,
   1722                         cc.unicode, cc.unicodeLength,
   1723                         &errorCode);
   1724         if(errorCode==U_STRING_NOT_TERMINATED_WARNING || errorCode==U_BUFFER_OVERFLOW_ERROR) {
   1725             errorCode=U_ZERO_ERROR;
   1726         }
   1727         ok=checkFromUnicode(
   1728                 cc, cnv, "preflight fromUChars",
   1729                 (uint8_t *)result, resultLength,
   1730                 NULL,
   1731                 errorCode);
   1732         break;
   1733     }
   1734 
   1735     ucnv_close(cnv);
   1736     return ok;
   1737 }
   1738 
   1739 UBool
   1740 ConversionTest::checkFromUnicode(ConversionCase &cc, UConverter *cnv, const char *name,
   1741                                  const uint8_t *result, int32_t resultLength,
   1742                                  const int32_t *resultOffsets,
   1743                                  UErrorCode resultErrorCode) {
   1744     UChar resultInvalidUChars[8];
   1745     int8_t resultInvalidLength;
   1746     UErrorCode errorCode;
   1747 
   1748     const char *msg;
   1749 
   1750     // reset the message; NULL will mean "ok"
   1751     msg=NULL;
   1752 
   1753     errorCode=U_ZERO_ERROR;
   1754     resultInvalidLength=UPRV_LENGTHOF(resultInvalidUChars);
   1755     ucnv_getInvalidUChars(cnv, resultInvalidUChars, &resultInvalidLength, &errorCode);
   1756     if(U_FAILURE(errorCode)) {
   1757         errln("fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d %s) ucnv_getInvalidUChars() failed - %s",
   1758                 cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, name, u_errorName(errorCode));
   1759         return FALSE;
   1760     }
   1761 
   1762     // check everything that might have gone wrong
   1763     if(cc.bytesLength!=resultLength) {
   1764         msg="wrong result length";
   1765     } else if(0!=memcmp(cc.bytes, result, cc.bytesLength)) {
   1766         msg="wrong result string";
   1767     } else if(cc.offsets!=NULL && 0!=memcmp(cc.offsets, resultOffsets, cc.bytesLength*sizeof(*cc.offsets))) {
   1768         msg="wrong offsets";
   1769     } else if(cc.outErrorCode!=resultErrorCode) {
   1770         msg="wrong error code";
   1771     } else if(cc.invalidLength!=resultInvalidLength) {
   1772         msg="wrong length of last invalid input";
   1773     } else if(0!=u_memcmp(cc.invalidUChars, resultInvalidUChars, cc.invalidLength)) {
   1774         msg="wrong last invalid input";
   1775     }
   1776 
   1777     if(msg==NULL) {
   1778         return TRUE;
   1779     } else {
   1780         char buffer[2000]; // one buffer for all strings
   1781         char *s, *unicodeString, *bytesString, *resultString,
   1782             *offsetsString, *resultOffsetsString,
   1783             *invalidCharsString, *resultInvalidUCharsString;
   1784 
   1785         unicodeString=s=buffer;
   1786         s=printUnicode(cc.unicode, cc.unicodeLength, unicodeString);
   1787         s=printBytes(cc.bytes, cc.bytesLength, bytesString=s);
   1788         s=printBytes(result, resultLength, resultString=s);
   1789         s=printOffsets(cc.offsets, cc.bytesLength, offsetsString=s);
   1790         s=printOffsets(resultOffsets, resultLength, resultOffsetsString=s);
   1791         s=printUnicode(cc.invalidUChars, cc.invalidLength, invalidCharsString=s);
   1792         s=printUnicode(resultInvalidUChars, resultInvalidLength, resultInvalidUCharsString=s);
   1793 
   1794         if((s-buffer)>(int32_t)sizeof(buffer)) {
   1795             errln("fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d %s) fatal error: checkFromUnicode() test output buffer overflow writing %d chars\n",
   1796                     cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, name, (int)(s-buffer));
   1797             exit(1);
   1798         }
   1799 
   1800         errln("fromUnicode[%d](%s cb=\"%s\" fb=%d flush=%d %s) failed: %s\n"
   1801               "  unicode <%s>[%d]\n"
   1802               " expected <%s>[%d]\n"
   1803               "  result  <%s>[%d]\n"
   1804               " offsets         <%s>\n"
   1805               "  result offsets <%s>\n"
   1806               " error code expected %s got %s\n"
   1807               "  invalidChars expected <%s> got <%s>\n",
   1808               cc.caseNr, cc.charset, cc.cbopt, cc.fallbacks, cc.finalFlush, name, msg,
   1809               unicodeString, cc.unicodeLength,
   1810               bytesString, cc.bytesLength,
   1811               resultString, resultLength,
   1812               offsetsString,
   1813               resultOffsetsString,
   1814               u_errorName(cc.outErrorCode), u_errorName(resultErrorCode),
   1815               invalidCharsString, resultInvalidUCharsString);
   1816 
   1817         return FALSE;
   1818     }
   1819 }
   1820 
   1821 #endif /* #if !UCONFIG_NO_LEGACY_CONVERSION */
   1822