/********************************************************************
 * COPYRIGHT: 
 * Copyright (c) 1997-1999, International Business Machines Corporation and
 * others. All Rights Reserved.
 ********************************************************************/
/********************************************************************************
*
* File CU_CAPITST.C
*
* Modification History:
*        Name                      Description            
*     Madhu Katragadda              Ported for C API
*********************************************************************************
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "ccapitst.h"
#include "unicode/uloc.h"
#include "unicode/ucnv.h"
#include "unicode/ucnv_err.h"
#include "cintltst.h"
#include "unicode/utypes.h"
#include "unicode/ustring.h"
#include "cstring.h"
#include "cmemory.h"

#define NUM_CODEPAGE 1
#define MAX_FILE_LEN 1024*20
#define UCS_FILE_NAME_SIZE 100

/*writes and entire UChar* (string) along with a BOM to a file*/
static void WriteToFile(const UChar *a, FILE *myfile); 
/*Case insensitive compare*/
static int32_t strCaseIcmp(const char* a1,const char * a2); 
/*returns an action other than the one provided*/
static UConverterFromUCallback otherUnicodeAction(UConverterFromUCallback MIA);
static UConverterToUCallback otherCharAction(UConverterToUCallback MIA);


void addTestConvert(TestNode** root)
{
    addTest(root, &TestConvert, "tsconv/ccapitst/TestConvert");
    addTest(root, &TestAlias,   "tsconv/ccapitst/TestAlias"); 
}

static void TestConvert() 
{
    char                myptr[4];
    char                save[4];
    int32_t             testLong1           =   0;
    int16_t             rest                =   0;
    int32_t             len                 =   0;
    int32_t             x                   =   0;
    FILE*               ucs_file_in         =   NULL;
    UChar                BOM                 =   0x0000;
    UChar                myUChar           =   0x0000;
    char*               mytarget; /*    [MAX_FILE_LEN] */
    char*               mytarget_1;
    char*               mytarget_use;
    UChar*                consumedUni         =   NULL;
    char*               consumed            =   NULL;
    char*                 output_cp_buffer; /*    [MAX_FILE_LEN] */
    UChar*                ucs_file_buffer; /*    [MAX_FILE_LEN] */
    UChar*                ucs_file_buffer_use;
    UChar*                my_ucs_file_buffer; /*    [MAX_FILE_LEN] */
    UChar*                my_ucs_file_buffer_1;
    int32_t             i                   =   0;
    int8_t                ii                  =   0;
    int32_t             j                   =   0;
    uint16_t            codepage_index      =   0;
    uint16_t            count;
    int32_t             cp                  =   0;
    UErrorCode          err                 =   U_ZERO_ERROR;
    const char*            available_conv;  
    char                ucs_file_name[UCS_FILE_NAME_SIZE];
    UConverterFromUCallback          MIA1, MIA1_2;
    UConverterToUCallback              MIA2, MIA2_2;
    void                *MIA1Context, *MIA1Context2, *MIA2Context, *MIA2Context2;
    UConverter*            someConverters[5];
    UConverter*         myConverter = 0;
    UChar*                displayname = 0;
   
    const char* locale;

    UChar* uchar1 = 0;
    UChar* uchar2 = 0;
    UChar* uchar3 = 0;
    int32_t targetcapacity2;
    int32_t targetcapacity;
    int32_t targetsize;
    int32_t disnamelen;

    const UChar* tmp_ucs_buf;
    const UChar* tmp_consumedUni=NULL;
    const char* tmp_mytarget_use;
    const char* tmp_consumed; 

    int flushCount = 0;
    
    /******************************************************************
                                Checking Unicode -> ksc
     ******************************************************************/

    const char*      CodePagesToTest[NUM_CODEPAGE]       =
    {
       "IBM-949"

        
    }; 
    const uint16_t CodePageNumberToTest[NUM_CODEPAGE]             =
    {
        949
    };
    

/*    const int32_t        CodePagesAsciiControls[NUM_CODEPAGE]    =
    { 
        0xFFFFFFFF
            
    
    };

    const int32_t        CodePagesOtherControls[NUM_CODEPAGE]    =
    {
         0x00000005
    };*/


    const int8_t     CodePagesMinChars[NUM_CODEPAGE] =
    { 
        1
    
    };

    const int8_t     CodePagesMaxChars[NUM_CODEPAGE] =
    { 
        2
    
    };

    const int16_t        CodePagesSubstitutionChars[NUM_CODEPAGE]    =
    { 
        (int16_t)0xAFFE
    };

    const char* CodePagesTestFiles[NUM_CODEPAGE]    =
    { 
      "uni-text.txt"
    };

    
    const UConverterPlatform        CodePagesPlatform[NUM_CODEPAGE]    =
    { 
        UCNV_IBM
    
    };

/*    const UConverterToUCallback CodePagesMissingCharAction[NUM_CODEPAGE] =
    {
      UCNV_TO_U_CALLBACK_SUBSTITUTE
    };
    
    const UConverterFromUCallback CodePagesMissingUnicodeAction[NUM_CODEPAGE] =
    {
      UCNV_FROM_U_CALLBACK_SUBSTITUTE
    };*/

    const char* CodePagesLocale[NUM_CODEPAGE] =
    {
        "ko_KR"
    };

    UConverterFromUCallback oldFromUAction = NULL;
    UConverterToUCallback oldToUAction = NULL;
    void* oldFromUContext = NULL;
    void* oldToUContext = NULL;

    /* Allocate memory */
    mytarget = (char*) malloc(MAX_FILE_LEN * sizeof(mytarget[0]));
    output_cp_buffer = (char*) malloc(MAX_FILE_LEN * sizeof(output_cp_buffer[0]));
    ucs_file_buffer = (UChar*) malloc(MAX_FILE_LEN * sizeof(ucs_file_buffer[0]));
    my_ucs_file_buffer = (UChar*) malloc(MAX_FILE_LEN * sizeof(my_ucs_file_buffer[0]));

    ucs_file_buffer_use = ucs_file_buffer;
    mytarget_1=mytarget;
    mytarget_use        = mytarget;
    my_ucs_file_buffer_1=my_ucs_file_buffer;

    /* flush the converter cache to get a consistent state before the flushing is tested */
    flushCount = ucnv_flushCache();

    /*Calling all the UnicodeConverterCPP API and checking functionality*/

    /*Tests ucnv_getAvailableName(), getAvialableCount()*/

    log_verbose("Testing ucnv_countAvailable()...");

    testLong1=ucnv_countAvailable();
    log_verbose("Number of available Codepages:    %d\n", testLong1);

    log_verbose("\n---Testing ucnv_getAvailableName..");  /*need to check this out */

    available_conv = ucnv_getAvailableName(testLong1);
       /*test ucnv_getAvailableName with err condition*/
    log_verbose("\n---Testing ucnv_getAvailableName..with index < 0 ");
    available_conv = ucnv_getAvailableName(-1);
    if(available_conv != NULL){
        log_err("ucnv_getAvailableName() with index < 0) should return NULL\n");
    }

    /* Test ucnv_countAliases() etc. */
    count = ucnv_countAliases("utf-8", &err);
    if(U_FAILURE(err)) {
        log_err("FAILURE! ucnv_countAliases(\"utf-8\") -> %s\n", myErrorName(err));
    } else if(count <= 0) {
        log_err("FAILURE! ucnv_countAliases(\"utf-8\") -> %d aliases\n", count);
    } else {
        /* try to get the aliases individually */
        const char *alias;
        alias = ucnv_getAlias("utf-8", 0, &err);
        if(U_FAILURE(err)) {
            log_err("FAILURE! ucnv_getAlias(\"utf-8\", 0) -> %s\n", myErrorName(err));
        } else if(uprv_strcmp("UTF8", alias) != 0) {
            log_err("FAILURE! ucnv_getAlias(\"utf-8\", 0) -> %s instead of UTF8\n", alias);
        } else {
            uint16_t i;
            for(i = 0; i < count; ++i) {
                alias = ucnv_getAlias("utf-8", i, &err);
                if(U_FAILURE(err)) {
                    log_err("FAILURE! ucnv_getAlias(\"utf-8\", %d) -> %s\n", i, myErrorName(err));
                } else if(uprv_strlen(alias) > 20) {
                    /* sanity check */
                    log_err("FAILURE! ucnv_getAlias(\"utf-8\", %d) -> alias %s insanely long, corrupt?!\n", i, alias);
                } else {
                    log_verbose("alias %d for utf-8: %s\n", i, alias);
                }
            }
            if(U_SUCCESS(err)) {
                /* try to fill an array with all aliases */
                const char **aliases;
                aliases=(const char **)uprv_malloc(count * sizeof(const char *));
                if(aliases != 0) {
                    ucnv_getAliases("utf-8", aliases, &err);
                    if(U_FAILURE(err)) {
                        log_err("FAILURE! ucnv_getAliases(\"utf-8\") -> %s\n", myErrorName(err));
                    } else {
                        for(i = 0; i < count; ++i) {
                            /* compare the pointers with the ones returned individually */
                            alias = ucnv_getAlias("utf-8", i, &err);
                            if(U_FAILURE(err)) {
                                log_err("FAILURE! ucnv_getAlias(\"utf-8\", %d) -> %s\n", i, myErrorName(err));
                            } else if(aliases[i] != alias) {
                                log_err("FAILURE! ucnv_getAliases(\"utf-8\")[%d] != ucnv_getAlias(\"utf-8\", %d)\n", i, i);
                            }
                        }
                    }
                    uprv_free((char **)aliases);
                }
            }
        }
    }
     /*Testing ucnv_openU()*/
    {
        UChar converterName[]={ 0x0069, 0x0062, 0x006d, 0x002d, 0x0039, 0x0034, 0x0033, 0x0000}; /*ibm-943*/
        const char *illegalNameChars={ "ibm-943 ibm-943 ibm-943 ibm-943 ibm-943 ibm-943 ibm-943 ibm-943 ibm-943 ibm-943"};
        UChar illegalName[100];
        UConverter *converter=NULL;
        err=U_ZERO_ERROR;
        converter=ucnv_openU(converterName, &err);
        if(U_FAILURE(err)){
            log_err("FAILURE! ucnv_openU(ibm-943, err) failed. %s\n", myErrorName(err));
        }
        ucnv_close(converter);
        err=U_ZERO_ERROR;
        converter=ucnv_openU(NULL, &err);
        if(U_FAILURE(err)){
            log_err("FAILURE! ucnv_openU(NULL, err)  failed. %s\n", myErrorName(err));
        }
        ucnv_close(converter);
        /*testing with error value*/
        err=U_ILLEGAL_ARGUMENT_ERROR;
        converter=ucnv_openU(converterName, &err);
        if(!(converter == NULL)){
            log_err("FAILURE! ucnv_openU(ibm-943, U_ILLEGAL_ARGUMENT_ERROR) is expected to fail\n");
        }
        ucnv_close(converter);
        err=U_ZERO_ERROR;
        u_uastrcpy(illegalName, "");
        u_uastrcpy(illegalName, illegalNameChars);
        ucnv_openU(illegalName, &err);
        if(!(err==U_ILLEGAL_ARGUMENT_ERROR)){
            log_err("FAILURE! ucnv_openU(illegalName, err) is expected to fail\n");
        }
        err=U_ZERO_ERROR;
      
    }
    log_verbose("Testing ucnv_open() with converter name greater than 7 characters\n");
    {
         UConverter *cnv=NULL;
         err=U_ZERO_ERROR;
         cnv=ucnv_open("ibm-949,Madhu", &err);
         if(U_FAILURE(err)){
            log_err("FAILURE! ucnv_open(\"ibm-949,Madhu\", err)  failed. %s\n", myErrorName(err));
         }
         ucnv_close(cnv);

    }
      /*Testing ucnv_convert()*/
    do /* do {} while(0) allows to leave this block with a break */
    {
        int32_t targetLimit=0, sourceLimit=0, i=0, targetCapacity=0;
        const uint8_t source[]={ 0x00, 0x04, 0x05, 0x06, 0xa2, 0xb4, 0x00};
        const uint8_t expectedTarget[]={ 0x00, 0x37, 0x2d, 0x2e, 0x0e, 0x49, 0x62, 0x0f, 0x00};
        char *target=0;
        sourceLimit=sizeof(source)/sizeof(source[0]);
        err=U_ZERO_ERROR;
        targetLimit=0;
            
        targetCapacity=ucnv_convert("ibm-1364", "ibm-1363", NULL, targetLimit , (const char*)source, sourceLimit, &err);
        if(err == U_BUFFER_OVERFLOW_ERROR){
            err=U_ZERO_ERROR;
            targetLimit=targetCapacity+1;
            target=(char*)malloc(sizeof(char) * targetLimit);
            targetCapacity=ucnv_convert("ibm-1364", "ibm-1363", target, targetLimit , (const char*)source, sourceLimit, &err);
        }
        if(U_FAILURE(err)){
            log_err("FAILURE! ucnv_convert(ibm-1363->ibm-1364) failed. %s\n", myErrorName(err));
            break;
        }
        for(i=0; i<targetCapacity; i++){
            if(target[i] != expectedTarget[i]){
                log_err("FAIL: ucnv_convert(ibm-1363->ibm-1364) failed.at index \n i=%d,  Expected: %lx Got: %lx\n", i, (UChar)expectedTarget[i], (uint8_t)target[i]);
            }
        }
        /*Test error conditions*/
        i=ucnv_convert("ibm-1364", "ibm-1363", target, targetLimit , (const char*)source, 0, &err);
        if(i !=0){
            log_err("FAILURE! ucnv_convert() with sourceLimit=0 is expected to return 0\n");
        }
        ucnv_convert("ibm-1364", "ibm-1363", target, targetLimit , (const char*)source, -1, &err);
        if(!(U_FAILURE(err) && err==U_ILLEGAL_ARGUMENT_ERROR)){
            log_err("FAILURE! ucnv_convert() with sourceLimit=-1 is expected to fail\n");
        }
        sourceLimit=sizeof(source)/sizeof(source[0]);
        i=ucnv_convert("ibm-1364", "ibm-1363", target, targetLimit , (const char*)source, sourceLimit, &err);
        if(i !=0 ){
            log_err("FAILURE! ucnv_convert() with err=U_ILLEGAL_ARGUMENT_ERROR is expected to return 0\n");
        }
        err=U_ZERO_ERROR;
        sourceLimit=sizeof(source)/sizeof(source[0]);
        targetLimit=0;
        i=ucnv_convert("ibm-1364", "ibm-1363", target, targetLimit , (const char*)source, sourceLimit, &err);
        if(!(U_FAILURE(err) && err==U_BUFFER_OVERFLOW_ERROR)){
            log_err("FAILURE! ucnv_convert() with targetLimit=0 is expected to throw U_BUFFER_OVERFLOW_ERROR\n");
        }
        err=U_ZERO_ERROR;
        free(target);
        ucnv_flushCache();
    } while(0);

    /*Testing ucnv_open()*/
    /* Note: These converters have been chosen because they do NOT
       encode the Latin characters (U+0041, ...), and therefore are
       highly unlikely to be chosen as system default codepages */

    someConverters[0] = ucnv_open("ibm-1047", &err);
    if (U_FAILURE(err)) {
        log_err("FAILURE! %s\n", myErrorName(err));
    }

    someConverters[1] = ucnv_open("ibm-1047", &err);
    if (U_FAILURE(err)) {
        log_err("FAILURE! %s\n", myErrorName(err));
    }

    someConverters[2] = ucnv_open("ibm-1047", &err);
    if (U_FAILURE(err)) {
        log_err("FAILURE! %s\n", myErrorName(err));
    }

    someConverters[3] = ucnv_open("ibm-834", &err);
    if (U_FAILURE(err)) {
        log_err("FAILURE! %s\n", myErrorName(err));
    }

    someConverters[4] = ucnv_open("ibm-941", &err);
    if (U_FAILURE(err)) {
        log_err("FAILURE! %s\n", myErrorName(err));
    }


    /* Testing ucnv_flushCache() */
    log_verbose("\n---Testing ucnv_flushCache...\n");
    if ((flushCount=ucnv_flushCache())==0)
        log_verbose("Flush cache ok\n");
    else 
        log_err("Flush Cache failed [line %d], expect 0 got %d \n", __LINE__, flushCount);

    /*testing ucnv_close() and ucnv_flushCache() */
    ucnv_close(someConverters[0]);
    ucnv_close(someConverters[1]);
    ucnv_close(someConverters[2]);
    ucnv_close(someConverters[3]);

    if ((flushCount=ucnv_flushCache())==2) 
        log_verbose("Flush cache ok\n");  /*because first, second and third are same  */
    else 
        log_err("Flush Cache failed  line %d, got %d expected 2 or there is an error in ucnv_close()\n",
            __LINE__,
            flushCount);

    ucnv_close(someConverters[4]);
    if ( (flushCount=ucnv_flushCache())==1) 
        log_verbose("Flush cache ok\n");
    else 
        log_err("Flush Cache failed line %d, expected 1 got %d \n", __LINE__, flushCount);

    /*Testing ucnv_openCCSID and ucnv_open with error conditions*/
    log_verbose("\n---Testing ucnv_open with err ! = U_ZERO_ERROR...\n");
    err=U_ILLEGAL_ARGUMENT_ERROR;
    if(ucnv_open(NULL, &err) != NULL){
        log_err("ucnv_open with err != U_ZERO_ERROR is supposed to fail\n");
    }
    if(ucnv_openCCSID(1051, UCNV_IBM, &err) != NULL){
        log_err("ucnv_open with err != U_ZERO_ERROR is supposed to fail\n");
    }
    err=U_ZERO_ERROR;
    
    /* Testing ucnv_openCCSID(), ucnv_open(), ucnv_getName() */
    log_verbose("\n---Testing ucnv_open default...\n");
    someConverters[0] = ucnv_open(NULL,&err);
    someConverters[1] = ucnv_open(NULL,&err);
    someConverters[2] = ucnv_open("utf8", &err);
    someConverters[3] = ucnv_openCCSID(949,UCNV_IBM,&err);
    ucnv_close(ucnv_openCCSID(1051, UCNV_IBM, &err)); /* test for j350; ucnv_close(NULL) is safe */
    if (U_FAILURE(err)){ log_err("FAILURE! %s\n", myErrorName(err));}

    /* Testing ucnv_getName()*/
    /*default code page */
    ucnv_getName(someConverters[0], &err);
    if(U_FAILURE(err)) {
        log_err("getName[0] failed\n");
    } else {
        log_verbose("getName(someConverters[0]) returned %s\n", ucnv_getName(someConverters[0], &err));
    }
    ucnv_getName(someConverters[1], &err);
    if(U_FAILURE(err)) {
        log_err("getName[1] failed\n");
    } else {
        log_verbose("getName(someConverters[1]) returned %s\n", ucnv_getName(someConverters[1], &err));
    }

    /*Testing ucnv_getDefaultName() and ucnv_setDefaultNAme()*/
    {
        const char* defaultName=ucnv_getDefaultName();
        log_verbose("getDefaultName returned %s\n", defaultName);

        /*change the default name by setting it */
        ucnv_setDefaultName("changed");
        if(strcmp(ucnv_getDefaultName(), "changed")==0)
            log_verbose("setDefaultName o.k");
        else
            log_err("setDefaultName failed");  
        /*set the default name back*/
        ucnv_setDefaultName(defaultName);
    }

    ucnv_close(someConverters[0]);
    ucnv_close(someConverters[1]);
    ucnv_close(someConverters[2]);
    ucnv_close(someConverters[3]);
    
       
    for (codepage_index=0; codepage_index <  NUM_CODEPAGE; ++codepage_index)
    {
        i = 0;  
    
        strcpy(ucs_file_name, ctest_getTestDirectory());
        strcat(ucs_file_name, CodePagesTestFiles[codepage_index]);

        ucs_file_in = fopen(ucs_file_name,"rb");
        if (!ucs_file_in) 
        {
            log_err("Couldn't open the Unicode file [%s]... Exiting...\n", ucs_file_name);
            return;
        }

        /*Creates a converter and testing ucnv_openCCSID(u_int code_page, platform, errstatus*/

        /*  myConverter =ucnv_openCCSID(CodePageNumberToTest[codepage_index],UCNV_IBM, &err); */
        /*  ucnv_flushCache(); */
        myConverter =ucnv_open( "ibm-949", &err);
        if (!myConverter || U_FAILURE(err))   
        {
            log_err("Error creating the convertor \n");

            return;
        }

        /*testing for ucnv_getName()  */
        log_verbose("Testing ucnv_getName()...\n");
        ucnv_getName(myConverter, &err);
        if(U_FAILURE(err))
            log_err("Error in getName\n");
        else
        {
            log_verbose("getName o.k. %s\n", ucnv_getName(myConverter, &err));
        }
        if (strCaseIcmp(ucnv_getName(myConverter, &err), CodePagesToTest[codepage_index]))
            log_err("getName failed\n");
        else 
            log_verbose("getName ok\n");
        /*Test getName with error condition*/
        { 
            const char* name=0;
            err=U_ILLEGAL_ARGUMENT_ERROR;
            log_verbose("Testing ucnv_getName with err != U_ZERO_ERROR");
            name=ucnv_getName(myConverter, &err);
            if(name != NULL){
                log_err("ucnv_getName() with err != U_ZERO_ERROR is expected to fail");
            }
            err=U_ZERO_ERROR;
        }


        /*Tests ucnv_getMaxCharSize() and ucnv_getMinCharSize()*/

        log_verbose("Testing ucnv_getMaxCharSize()...\n");
        if (ucnv_getMaxCharSize(myConverter)==CodePagesMaxChars[codepage_index])  
            log_verbose("Max byte per character OK\n");
        else 
            log_err("Max byte per character failed\n");
    
        log_verbose("\n---Testing ucnv_getMinCharSize()...\n");
        if (ucnv_getMinCharSize(myConverter)==CodePagesMinChars[codepage_index])  
            log_verbose("Min byte per character OK\n");
        else 
            log_err("Min byte per character failed\n");


        /*Testing for ucnv_getSubstChars() and ucnv_setSubstChars()*/
        log_verbose("\n---Testing ucnv_getSubstChars...\n");
        ii=4;
        ucnv_getSubstChars(myConverter, myptr, &ii, &err);

        for(x=0;x<ii;x++) 
            rest = (int16_t)(((unsigned char)rest << 8) + (unsigned char)myptr[x]);
        if (rest==CodePagesSubstitutionChars[codepage_index])  
            log_verbose("Substitution character ok\n");
        else 
            log_err("Substitution character failed.\n");

        log_verbose("\n---Testing ucnv_setSubstChars RoundTrip Test ...\n");
        ucnv_setSubstChars(myConverter, myptr, ii, &err);
        if (U_FAILURE(err)) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }
        ucnv_getSubstChars(myConverter,save, &ii, &err);
        if (U_FAILURE(err)) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }

        if (strncmp(save, myptr, ii)) 
            log_err("Saved substitution character failed\n");
        else 
            log_verbose("Saved substitution character ok\n");

        /*Testing for ucnv_getSubstChars() and ucnv_setSubstChars() with error conditions*/ 
        log_verbose("\n---Testing ucnv_getSubstChars.. with len < minBytesPerChar\n");
        ii=1;
        ucnv_getSubstChars(myConverter, myptr, &ii, &err);
        if(err != U_INDEX_OUTOFBOUNDS_ERROR){
            log_err("ucnv_getSubstChars() with len < minBytesPerChar should throw U_INDEX_OUTOFBOUNDS_ERROR Got %s\n", myErrorName(err));
        }
        err=U_ZERO_ERROR;
        ii=4;
        ucnv_getSubstChars(myConverter, myptr, &ii, &err);
        log_verbose("\n---Testing ucnv_setSubstChars.. with len < minBytesPerChar\n");
        ucnv_setSubstChars(myConverter, myptr, 0, &err);
        if(err != U_ILLEGAL_ARGUMENT_ERROR){
            log_err("ucnv_setSubstChars() with len < minBytesPerChar should throw U_ILLEGAL_ARGUMENT_ERROR Got %s\n", myErrorName(err));
        }
        log_verbose("\n---Testing ucnv_setSubstChars.. with err != U_ZERO_ERROR \n");
        strcpy(myptr, "abc");
        ucnv_setSubstChars(myConverter, myptr, ii, &err);
        err=U_ZERO_ERROR;
        ucnv_getSubstChars(myConverter, save, &ii, &err);
        if(strncmp(save, myptr, ii) == 0){
            log_err("uncv_setSubstChars() with err != U_ZERO_ERROR shouldn't set the SubstChars and just return\n");
        }
        log_verbose("\n---Testing ucnv_getSubstChars.. with err != U_ZERO_ERROR \n");
        err=U_ZERO_ERROR;
        strcpy(myptr, "abc");
        ucnv_setSubstChars(myConverter, myptr, ii, &err);
        err=U_ILLEGAL_ARGUMENT_ERROR;
        ucnv_getSubstChars(myConverter, save, &ii, &err);
        if(strncmp(save, myptr, ii) == 0){
            log_err("uncv_setSubstChars() with err != U_ZERO_ERROR shouldn't fill the SubstChars in the buffer, it just returns\n");
        }
        err=U_ZERO_ERROR;
        /*------*/

        /*resetState  ucnv_reset()*/
        log_verbose("\n---Testing ucnv_reset()..\n");
        ucnv_reset(myConverter);
        {
             UChar32 c;
             const uint8_t in[]={  0x1b, 0x25, 0x42, 0x31, 0x32, 0x61, 0xc0, 0x80, 0xe0, 0x80, 0x80, 0xf0, 0x80, 0x80, 0x80};
             const char *source=(const char *)in, *limit=(const char *)in+sizeof(in);
             UConverter *cnv=ucnv_open("ISO_2022", &err);
             if(U_FAILURE(err)) {
                log_err("Unable to open a iso-2022 converter: %s\n", u_errorName(err));
             }
             c=ucnv_getNextUChar(cnv, &source, limit, &err);
             if((U_FAILURE(err) || c != (UChar32)0x0031)) {
                log_err("ucnv_getNextUChar() failed: %s\n", u_errorName(err));
             }
             ucnv_reset(cnv);
             ucnv_close(cnv);
         
        }
    
        /*getDisplayName*/
        log_verbose("\n---Testing ucnv_getDisplayName()...\n");
        locale=CodePagesLocale[codepage_index];
        displayname=(UChar*)malloc(1 * sizeof(UChar));
        len=0;
        disnamelen = ucnv_getDisplayName(myConverter,locale,displayname, len, &err); 
        if(err==U_BUFFER_OVERFLOW_ERROR)
        {    
            err=U_ZERO_ERROR;
            displayname=(UChar*)realloc(displayname, (disnamelen+1) * sizeof(UChar));
            ucnv_getDisplayName(myConverter,locale,displayname,disnamelen+1, &err);
            if(U_FAILURE(err))
            {
                log_err("getDisplayName failed the error is  %s\n", myErrorName(err));
            }
            else
                log_verbose(" getDisplayName o.k.\n");
        }
        /*test ucnv_getDiaplayName with error condition*/
        log_verbose("\n---Testing ucnv_getDisplayName()...\n");
        err= U_ILLEGAL_ARGUMENT_ERROR;
        len=ucnv_getDisplayName(myConverter,locale,displayname,disnamelen+1, &err);  
        if( len !=0 ){
            log_err("ucnv_getDisplayName() with err != U_ZERO_ERROR is supposed to return 0\n");
        }
        err=U_ZERO_ERROR;

        /* testing ucnv_setFromUCallBack() and ucnv_getFromUCallBack()*/
        ucnv_getFromUCallBack(myConverter, &MIA1, &MIA1Context);
            
        log_verbose("\n---Testing ucnv_setFromUCallBack...\n");
        ucnv_setFromUCallBack(myConverter, otherUnicodeAction(MIA1), &BOM, &oldFromUAction, &oldFromUContext, &err);
        if (U_FAILURE(err) || oldFromUAction != MIA1 || oldFromUContext != MIA1Context) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }

        ucnv_getFromUCallBack(myConverter, &MIA1_2, &MIA1Context2);
        if (MIA1_2 != otherUnicodeAction(MIA1) || MIA1Context2 != &BOM) 
            log_err("get From UCallBack failed\n");
        else 
            log_verbose("get From UCallBack ok\n");

        log_verbose("\n---Testing getFromUCallBack Roundtrip...\n");
        ucnv_setFromUCallBack(myConverter,MIA1, MIA1Context, &oldFromUAction, &oldFromUContext, &err);
        if (U_FAILURE(err) || oldFromUAction != otherUnicodeAction(MIA1) || oldFromUContext != &BOM) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }

        ucnv_getFromUCallBack(myConverter, &MIA1_2, &MIA1Context2);
        if (MIA1_2 != MIA1 || MIA1Context2 != MIA1Context) 
            log_err("get From UCallBack action failed\n");
        else 
            log_verbose("get From UCallBack action ok\n");

        /*testing ucnv_setToUCallBack with error conditions*/
        err=U_ILLEGAL_ARGUMENT_ERROR;
        log_verbose("\n---Testing setFromUCallBack. with err != U_ZERO_ERROR..\n");
        ucnv_setFromUCallBack(myConverter, otherUnicodeAction(MIA1), &BOM, &oldFromUAction, &oldFromUContext, &err);
        ucnv_getFromUCallBack(myConverter, &MIA1_2, &MIA1Context2);
        if(MIA1_2 == otherUnicodeAction(MIA1) || MIA1Context2 == &BOM){
            log_err("To setFromUCallBack with err != U_ZERO_ERROR is supposed to fail\n");
        }
        err=U_ZERO_ERROR;


        /*testing ucnv_setToUCallBack() and ucnv_getToUCallBack()*/
        ucnv_getToUCallBack(myConverter, &MIA2, &MIA2Context);

        log_verbose("\n---Testing setTo UCallBack...\n");
        ucnv_setToUCallBack(myConverter,otherCharAction(MIA2), &BOM, &oldToUAction, &oldToUContext, &err);
        if (U_FAILURE(err) || oldToUAction != MIA2 || oldToUContext != MIA2Context) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }

        ucnv_getToUCallBack(myConverter, &MIA2_2, &MIA2Context2);
        if (MIA2_2 != otherCharAction(MIA2) || MIA2Context2 != &BOM) 
            log_err("To UCallBack failed\n");
        else 
            log_verbose("To UCallBack ok\n");

        log_verbose("\n---Testing setTo UCallBack Roundtrip...\n");
        ucnv_setToUCallBack(myConverter,MIA2, MIA2Context, &oldToUAction, &oldToUContext, &err);
        if (U_FAILURE(err) || oldToUAction != otherCharAction(MIA2) || oldToUContext != &BOM) 
        { log_err("FAILURE! %s\n", myErrorName(err));  }

        ucnv_getToUCallBack(myConverter, &MIA2_2, &MIA2Context2);
        if (MIA2_2 != MIA2 || MIA2Context2 != MIA2Context)
            log_err("To UCallBack failed\n");
        else 
            log_verbose("To UCallBack ok\n");

        /*testing ucnv_setToUCallBack with error conditions*/
        err=U_ILLEGAL_ARGUMENT_ERROR;
        log_verbose("\n---Testing setToUCallBack. with err != U_ZERO_ERROR..\n");
        ucnv_setToUCallBack(myConverter,otherCharAction(MIA2), NULL, &oldToUAction, &oldToUContext, &err);
        ucnv_getToUCallBack(myConverter, &MIA2_2, &MIA2Context2);
        if (MIA2_2 == otherCharAction(MIA2) || MIA2Context2 == &BOM){ 
            log_err("To setToUCallBack with err != U_ZERO_ERROR is supposed to fail\n");
        }
        err=U_ZERO_ERROR;


        /*getcodepageid testing ucnv_getCCSID() */
        log_verbose("\n----Testing getCCSID....\n");
        cp =    ucnv_getCCSID(myConverter,&err);
        if (U_FAILURE(err)) 
        {
            log_err("FAILURE!..... %s\n", myErrorName(err));
        }
        if (cp != CodePageNumberToTest[codepage_index]) 
            log_err("Codepage number test failed\n");
        else 
            log_verbose("Codepage number test OK\n");

        /*testing ucnv_getCCSID() with err != U_ZERO_ERROR*/
        err=U_ILLEGAL_ARGUMENT_ERROR;
        if( ucnv_getCCSID(myConverter,&err) != -1){
            log_err("ucnv_getCCSID() with err != U_ZERO_ERROR is supposed to fail\n");
        }
        err=U_ZERO_ERROR;

        /*getCodepagePlatform testing ucnv_getPlatform()*/
        log_verbose("\n---Testing getCodepagePlatform ..\n");
        if (CodePagesPlatform[codepage_index]!=ucnv_getPlatform(myConverter, &err))
            log_err("Platform codepage test failed\n");
        else 
            log_verbose("Platform codepage test ok\n");

        if (U_FAILURE(err)) 
        { 
            log_err("FAILURE! %s\n", myErrorName(err));
        }
        /*testing ucnv_getPlatform() with err != U_ZERO_ERROR*/
        err= U_ILLEGAL_ARGUMENT_ERROR;
        if(ucnv_getPlatform(myConverter, &err) != UCNV_UNKNOWN){
            log_err("ucnv)getPlatform with err != U_ZERO_ERROR is supposed to fail\n");
        }
        err=U_ZERO_ERROR;


        /*Reads the BOM*/
        fread(&BOM, sizeof(UChar), 1, ucs_file_in);
        if (BOM!=0xFEFF && BOM!=0xFFFE) 
        {
            log_err("File Missing BOM...Bailing!\n");
            return;
        }


        /*Reads in the file*/
        while(!feof(ucs_file_in)&&(i+=fread(ucs_file_buffer+i, sizeof(UChar), 1, ucs_file_in)))
        {
            myUChar = ucs_file_buffer[i-1];
            
            ucs_file_buffer[i-1] = (UChar)((BOM==0xFEFF)?myUChar:((myUChar >> 8) | (myUChar << 8))); /*adjust if BIG_ENDIAN*/
        }

        myUChar = ucs_file_buffer[i-1];
        ucs_file_buffer[i-1] = (UChar)((BOM==0xFEFF)?myUChar:((myUChar >> 8) | (myUChar << 8))); /*adjust if BIG_ENDIAN Corner Case*/


        /*testing ucnv_fromUChars() and ucnv_toUChars() */
        /*uchar1---fromUChar--->output_cp_buffer --toUChar--->uchar2*/

        uchar1=(UChar*)malloc(sizeof(UChar) * (i+1));
        u_uastrcpy(uchar1,"");
        u_strncpy(uchar1,ucs_file_buffer,i);

        uchar3=(UChar*)malloc(sizeof(UChar)*(i+1));
        u_uastrcpy(uchar3,"");
        u_strncpy(uchar3,ucs_file_buffer,i);

        /*Calls the Conversion Routine */
        testLong1 = MAX_FILE_LEN;
        log_verbose("\n---Testing ucnv_fromUChars()\n");
        targetcapacity = ucnv_fromUChars(myConverter, output_cp_buffer, testLong1,  uchar1, -1, &err);
        if (U_FAILURE(err))  
        {
            log_err("\nFAILURE...%s\n", myErrorName(err));
        }
        else
            log_verbose(" ucnv_fromUChars() o.k.\n");
        /*the codepage intermediate buffer should be null terminated */
        output_cp_buffer[targetcapacity]='\0';

        /*test the conversion routine */
        log_verbose("\n---Testing ucnv_toUChars()\n");
        /*call it first time for trapping the targetcapacity and size needed to allocate memory for the buffer uchar2 */
        targetcapacity2=0; 
        targetsize = ucnv_toUChars(myConverter,
                     NULL,
                     targetcapacity2,
                     output_cp_buffer,
                     strlen(output_cp_buffer),
                     &err);
        /*if there is an buffer overflow then trap the values and pass them and make the actual call*/

        if(err==U_BUFFER_OVERFLOW_ERROR)
        {
            err=U_ZERO_ERROR;
            uchar2=(UChar*)malloc((targetsize) * sizeof(UChar));
            targetsize = ucnv_toUChars(myConverter, 
                   uchar2,
                   targetsize, 
                   output_cp_buffer,
                   strlen(output_cp_buffer),
                   &err);

            if(U_FAILURE(err))
                log_err("ucnv_toUChars() FAILED %s\n", myErrorName(err));
            else
                log_verbose(" ucnv_toUChars() o.k.\n");

            if(u_strcmp(uchar1,uchar2)!=0) 
                log_err("equality test failed with convertion routine\n");
        }
        else
        {
            log_err("ERR: calling toUChars: Didn't get U_BUFFER_OVERFLOW .. expected it.\n");
        }
        /*Testing ucnv_fromUChars and ucnv_toUChars with error conditions*/
        err=U_ILLEGAL_ARGUMENT_ERROR;
        log_verbose("\n---Testing ucnv_fromUChars() with err != U_ZERO_ERROR\n");
        targetcapacity = ucnv_fromUChars(myConverter, output_cp_buffer, testLong1,  uchar1, -1, &err);
        if (targetcapacity !=0) {
            log_err("\nFAILURE: ucnv_fromUChars with err != U_ZERO_ERROR is expected to fail and return 0\n");
        }
        err=U_ZERO_ERROR;
        log_verbose("\n---Testing ucnv_fromUChars() with converter=NULL\n");
        targetcapacity = ucnv_fromUChars(NULL, output_cp_buffer, testLong1,  uchar1, -1, &err);
        if (targetcapacity !=0 || err != U_ILLEGAL_ARGUMENT_ERROR) {
            log_err("\nFAILURE: ucnv_fromUChars with converter=NULL is expected to fail\n");
        }
        err=U_ZERO_ERROR;
        log_verbose("\n---Testing ucnv_fromUChars() with sourceLength = 0\n");
        targetcapacity = ucnv_fromUChars(myConverter, output_cp_buffer, testLong1,  uchar1, 0, &err);
        if (targetcapacity !=0) {
            log_err("\nFAILURE: ucnv_fromUChars with sourceLength is expected to fail and return 0\n");
        }
        log_verbose("\n---Testing ucnv_fromUChars() with targetLenth = 0\n");
        targetcapacity = ucnv_fromUChars(myConverter, output_cp_buffer, 0,  uchar1, -1, &err);
        if (err != U_BUFFER_OVERFLOW_ERROR) {
            log_err("\nFAILURE: ucnv_fromUChars with targetLength is expected to fail and throw U_BUFFER_OVERFLOW_ERROR\n");
        }
        /*toUChars with error conditions*/
        targetsize = ucnv_toUChars(myConverter, uchar2, targetsize, output_cp_buffer, strlen(output_cp_buffer), &err);
        if(targetsize != 0){
            log_err("\nFAILURE: ucnv_toUChars with err != U_ZERO_ERROR is expected to fail and return 0\n");
        }
        err=U_ZERO_ERROR;
        targetsize = ucnv_toUChars(myConverter, uchar2, -1, output_cp_buffer, strlen(output_cp_buffer), &err);
        if(targetsize != 0 || err != U_ILLEGAL_ARGUMENT_ERROR){
            log_err("\nFAILURE: ucnv_toUChars with targetsize < 0 is expected to throw U_ILLEGAL_ARGUMENT_ERROR and return 0\n");
        }
        err=U_ZERO_ERROR;
        targetsize = ucnv_toUChars(myConverter, uchar2, 0, output_cp_buffer, 0, &err);
        if (targetsize !=0) {
            log_err("\nFAILURE: ucnv_toUChars with sourceLength is expected to fail and return 0\n");
        }
        targetcapacity2=0; 
        targetsize = ucnv_toUChars(myConverter, NULL, targetcapacity2, output_cp_buffer,  strlen(output_cp_buffer), &err);
        if (err != U_BUFFER_OVERFLOW_ERROR) {
            log_err("\nFAILURE: ucnv_toUChars with targetLength is expected to fail and throw U_BUFFER_OVERFLOW_ERROR\n");
        }
        err=U_ZERO_ERROR;
        /*-----*/


        /*testing for ucnv_fromUnicode() and ucnv_toUnicode() */
        /*Clean up re-usable vars*/
        j=0;
        log_verbose("Testing ucnv_fromUnicode().....\n");
        tmp_ucs_buf=ucs_file_buffer_use; 
        ucnv_fromUnicode(myConverter, &mytarget_1,
                 mytarget + MAX_FILE_LEN,
                 &tmp_ucs_buf,
                 ucs_file_buffer_use+i,
                 NULL,
                 TRUE,
                 &err);
        consumedUni = (UChar*)tmp_consumedUni;

        if (U_FAILURE(err)) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }
        else
            log_verbose("ucnv_fromUnicode()   o.k.\n");

        /*Uni1 ----ToUnicode----> Cp2 ----FromUnicode---->Uni3 */
        log_verbose("Testing ucnv_toUnicode().....\n");
        tmp_mytarget_use=mytarget_use;
        tmp_consumed = consumed;
        ucnv_toUnicode(myConverter, &my_ucs_file_buffer_1,
                my_ucs_file_buffer + MAX_FILE_LEN,
                &tmp_mytarget_use,
                mytarget_use + (mytarget_1 - mytarget),
                NULL,
                FALSE,
                &err);
        consumed = (char*)tmp_consumed;
        if (U_FAILURE(err)) 
        {
            log_err("FAILURE! %s\n", myErrorName(err));
        }
        else
            log_verbose("ucnv_toUnicode()  o.k.\n");


        log_verbose("\n---Testing   RoundTrip ...\n");


        u_strncpy(uchar3, my_ucs_file_buffer,i);

        if(u_strcmp(uchar1,uchar3)==0)
            log_verbose("Equality test o.k.\n");
        else 
            log_err("Equality test failed\n");

        /*sanity compare */
        if(uchar2 == NULL)
        {
            log_err("uchar2 was NULL (ccapitst.c line %d), couldn't do sanity check\n", __LINE__);
        }
        else
        {
            if(u_strcmp(uchar2, uchar3)==0)
                log_verbose("Equality test o.k.\n");
            else
                log_err("Equality test failed\n");
        }

        fclose(ucs_file_in);
        ucnv_close(myConverter);
        free(displayname);
        if (uchar1 != 0) free(uchar1);
        if (uchar2 != 0) free(uchar2);
        if (uchar3 != 0) free(uchar3);
    }

    free((void*)mytarget);
    free((void*)output_cp_buffer);
    free((void*)ucs_file_buffer);
    free((void*)my_ucs_file_buffer);
}

static void WriteToFile(const UChar *a, FILE *myfile)
{
    uint32_t  size    = u_strlen(a);
    uint16_t  i       = 0;
    UChar     b       = 0xFEFF;

    /*Writes the BOM*/
    fwrite(&b, sizeof(UChar), 1, myfile);
    for (i=0; i< size; i++)
    {
        b = a[i];
        fwrite(&b, sizeof(UChar), 1, myfile);
    }
}

static int32_t strCaseIcmp(const char* a1, const char * a2)
{
    int32_t i=0, ret=0;
    while(a1[i]&&a2[i]) 
    {
        ret += tolower(a1[i])-tolower(a2[i]); 
        i++;
    }
    return ret;
}

static UConverterFromUCallback otherUnicodeAction(UConverterFromUCallback MIA)
{
    return (MIA==(UConverterFromUCallback)UCNV_FROM_U_CALLBACK_STOP)?(UConverterFromUCallback)UCNV_FROM_U_CALLBACK_SUBSTITUTE:(UConverterFromUCallback)UCNV_FROM_U_CALLBACK_STOP;
}


static UConverterToUCallback otherCharAction(UConverterToUCallback MIA)
{
    return (MIA==(UConverterToUCallback)UCNV_TO_U_CALLBACK_STOP)?(UConverterToUCallback)UCNV_TO_U_CALLBACK_SUBSTITUTE:(UConverterToUCallback)UCNV_TO_U_CALLBACK_STOP;
}

/**
 * Test the converter alias API, specifically the fuzzy matching of
 * alias names and the alias table integrity.  Make sure each
 * converter has at least one alias (itself), and that its listed
 * aliases map back to itself.  Check some hard-coded UTF8 and
 * ISO_2022 aliases to make sure they work.
 */
static void TestAlias() {
    int32_t i, ncnv;
    UErrorCode status = U_ZERO_ERROR;

    /* Predetermined aliases that we expect to map back to ISO_2022
     * and UTF8.  UPDATE THIS DATA AS NECESSARY. */
    const char* ISO_2022_NAMES[] = 
        {"ISO_2022", "iso-2022", "2022",
         "cp2022", "iso2022", "iso_2022"};
    int32_t ISO_2022_NAMES_LENGTH =
        sizeof(ISO_2022_NAMES) / sizeof(ISO_2022_NAMES[0]);
    const char *UTF8_NAMES[] =
        { "UTF8", "utf-8", "utf8", "ibm-1208",
          "utf_8", "ibm1208", "cp1208" };
    int32_t UTF8_NAMES_LENGTH =
        sizeof(UTF8_NAMES) / sizeof(UTF8_NAMES[0]);

    struct {
	const char *name;
	const char *alias;
    } CONVERTERS_NAMES[] = {
	{ "UTF32_BigEndian",		"utf-32be" },
	{ "UTF32_LittleEndian",		"utf-32le" },
	{ "UTF32_PlatformEndian",	"ISO-10646-UCS-4" },
	{ "UTF32_PlatformEndian",	"utf-32" },
	{ "UTF32_PlatformEndian",	"ucs-4" }
    };
    int32_t CONVERTERS_NAMES_LENGTH = sizeof(CONVERTERS_NAMES) / sizeof(*CONVERTERS_NAMES);

    /* When there are bugs in gencnval or in ucnv_io, converters can
       appear to have no aliases. */
    ncnv = ucnv_countAvailable();
    log_verbose("%d converters\n", ncnv);
    for (i=0; i<ncnv; ++i) {
        const char *name = ucnv_getAvailableName(i);
        const char *alias0;
        uint16_t na = ucnv_countAliases(name, &status);
        uint16_t j;

        if (na == 0) {
            log_err("FAIL: Converter \"%s\" (i=%d)"
                    " has no aliases; expect at least one\n",
                    name, i);
            continue;
        }

        alias0 = ucnv_getAlias(name, 0, &status);
        for (j=1; j<na; ++j) {
            const char *alias = ucnv_getAlias(name, j, &status);
            /* Make sure each alias maps back to the the same list of
               aliases.  Assume that if alias 0 is the same, the whole
               list is the same (this should always be true). */
            const char *mapBack;

            if (alias == NULL) {
                log_err("FAIL: Converter \"%s\" -> "
                        "alias[%d]=NULL\n",
                        name, j);
                continue;
            }

            mapBack = ucnv_getAlias(alias, 0, &status);

            if (mapBack == NULL) {
                log_err("FAIL: Converter \"%s\" -> "
                        "alias[%d]=\"%s\" -> "
                        "alias[0]=NULL, exp. \"%s\"\n",
                        name, j, alias, alias0);
                continue;
            }

            if (0 != uprv_strcmp(alias0, mapBack)) {
                log_err("FAIL: Converter \"%s\" -> "
                        "alias[%d]=\"%s\" -> "
                        "alias[0]=\"%s\", exp. \"%s\"\n",
                        name, j, alias, mapBack, alias0);
            }
        }
    }

    /* Check a list of predetermined aliases that we expect to map
     * back to ISO_2022 and UTF8. */
    for (i=1; i<ISO_2022_NAMES_LENGTH; ++i) {
        const char* mapBack = ucnv_getAlias(ISO_2022_NAMES[i], 0, &status);
        if (0 != uprv_strcmp(mapBack, ISO_2022_NAMES[0])) {
            log_err("FAIL: \"%s\" -> \"%s\", expect ISO_2022\n",
                    ISO_2022_NAMES[i], mapBack);
        }
    }

    for (i=1; i<UTF8_NAMES_LENGTH; ++i) {
        const char* mapBack = ucnv_getAlias(UTF8_NAMES[i], 0, &status);
        if (0 != uprv_strcmp(mapBack, UTF8_NAMES[0])) {
            log_err("FAIL: \"%s\" -> \"%s\", expect UTF8\n",
                    UTF8_NAMES[i], mapBack);
        }
    }

    /*
     * Check a list of predetermined aliases that we expect to map
     * back to predermined converter names.
     */

    for (i = 0; i < CONVERTERS_NAMES_LENGTH; ++i) {
        const char* mapBack = ucnv_getAlias(CONVERTERS_NAMES[i].alias, 0, &status);
        if (0 != uprv_strcmp(mapBack, CONVERTERS_NAMES[i].name)) {
            log_err("FAIL: \"%s\" -> \"%s\", expect %s\n",
                    CONVERTERS_NAMES[i].alias, mapBack, CONVERTERS_NAMES[i].name);
        }
    }
}