// © 2016 and later: Unicode, Inc. and others.

// License & terms of use: http://www.unicode.org/copyright.html

/*

 ***************************************************************************

 * Copyright (C) 2008-2015, International Business Machines Corporation

 * and others. All Rights Reserved.

 ***************************************************************************

 *   file name:  uspoof_build.cpp

 *   encoding:   UTF-8

 *   tab size:   8 (not used)

 *   indentation:4

 *

 *   created on: 2008 Dec 8

 *   created by: Andy Heninger

 *

 *   Unicode Spoof Detection Data Builder

 *   Builder-related functions are kept in separate files so that applications not needing

 *   the builder can more easily exclude them, typically by means of static linking.

 *

 *   There are three relatively independent sets of Spoof data,

 *      Confusables,

 *      Whole Script Confusables

 *      ID character extensions.

 *

 *   The data tables for each are built separately, each from its own definitions

 */

#include "unicode/utypes.h"

#include "unicode/uspoof.h"

#include "unicode/unorm.h"

#include "unicode/uregex.h"

#include "unicode/ustring.h"

#include "cmemory.h"

#include "uspoof_impl.h"

#include "uhash.h"

#include "uvector.h"

#include "uassert.h"

#include "uarrsort.h"

#include "uspoof_conf.h"

#if !UCONFIG_NO_NORMALIZATION

U_NAMESPACE_USE

// Defined in uspoof.cpp, initializes file-static variables.

U_CFUNC void uspoof_internalInitStatics(UErrorCode *status);

// The main data building function

U_CAPI USpoofChecker * U_EXPORT2

uspoof_openFromSource(const char *confusables,  int32_t confusablesLen,

                      const char* /*confusablesWholeScript*/, int32_t /*confusablesWholeScriptLen*/,

                      int32_t *errorType, UParseError *pe, UErrorCode *status) {

    uspoof_internalInitStatics(status);

    if (U_FAILURE(*status)) {

        return NULL;

    }

#if UCONFIG_NO_REGULAR_EXPRESSIONS 

    *status = U_UNSUPPORTED_ERROR;      

    return NULL;

#else

    if (errorType!=NULL) {

        *errorType = 0;

    }

    if (pe != NULL) {

        pe->line = 0;

        pe->offset = 0;

        pe->preContext[0] = 0;

        pe->postContext[0] = 0;

    }

    // Set up a shell of a spoof detector, with empty data.

    SpoofData *newSpoofData = new SpoofData(*status);

    if (newSpoofData == NULL) {

        *status = U_MEMORY_ALLOCATION_ERROR;

        return NULL;

    }

    if (U_FAILURE(*status)) {

        delete newSpoofData;

        return NULL;

    }

    SpoofImpl *This = new SpoofImpl(newSpoofData, *status);

    if (This == NULL) {

        *status = U_MEMORY_ALLOCATION_ERROR;

        delete newSpoofData; // explicit delete as the destructor for SpoofImpl won't be called.

        return NULL;

    }

    if (U_FAILURE(*status)) {

        delete This; // no delete for newSpoofData, as the SpoofImpl destructor will delete it.

        return NULL;

    }

    // Compile the binary data from the source (text) format.

    ConfusabledataBuilder::buildConfusableData(This, confusables, confusablesLen, errorType, pe, *status);

    if (U_FAILURE(*status)) {

        delete This;

        This = NULL;

    }

    return (USpoofChecker *)This;

#endif // UCONFIG_NO_REGULAR_EXPRESSIONS 

}

#endif