/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2005-2006 Refractions Research Inc.
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation. 
 * See the COPYING file for more information.
 *
 **********************************************************************/

#ifdef _MSC_VER
# if defined(GEOS_DEBUG_MSVC_USE_VLD) && !defined(GEOS_TEST_USE_STACKWALKER)
#  include <vld.h>
# else
//#define _CRTDBG_MAP_ALLOC
//#include <stdlib.h>
#  include <crtdbg.h>
# endif
#pragma warning(disable : 4127)
#endif

#include <geos/geom/Point.h>
#include <geos/geom/LineString.h>
#include <geos/geom/LinearRing.h>
#include <geos/geom/Polygon.h>
#include <geos/geom/GeometryCollection.h>
#include <geos/geom/GeometryFactory.h>
#include <geos/geom/IntersectionMatrix.h>
#include <geos/geom/PrecisionModel.h>
#include <geos/geom/BinaryOp.h>
#include <geos/operation/overlay/OverlayOp.h>
#include <geos/operation/buffer/BufferBuilder.h>
#include <geos/operation/buffer/BufferParameters.h>
#include <geos/operation/buffer/BufferOp.h>
#include <geos/util.h>
#include <geos/util/Interrupt.h>
//#include <geos/geomgraph.h>
#include <geos/io/WKBReader.h>
#include <geos/io/WKBWriter.h>
#include <geos/io/WKTReader.h>
#include <geos/io/WKTWriter.h>
#include <geos/opRelate.h>
#include <geos/opPolygonize.h>
#include <geos/opLinemerge.h>
#include <geos/profiler.h>
#include <geos/unload.h>
#include <geos/opValid.h>
#include "XMLTester.h"
#include "BufferResultMatcher.h"
#include "SingleSidedBufferResultMatcher.h"

#include <cassert>
#include <cctype>
#include <cstdlib>
#include <fstream>
#include <functional>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <cstring>
#include <memory>
#include <functional>
#include <stdexcept>
#include <cmath>
#include <stdexcept>
#include <algorithm>

#include <signal.h>

#if defined(_MSC_VER) && defined(GEOS_TEST_USE_STACKWALKER)
#include <windows.h>
#include "Stackwalker.h"
#endif

// Geometry methods do use BinaryOp internally
#undef USE_BINARYOP

using namespace geos;
using namespace geos::operation::polygonize;
using namespace geos::operation::linemerge;
using std::runtime_error;

namespace {

// a utility function defining a very simple method to indent a line of text
const char * getIndent( unsigned int numIndents )
{
    static const char * pINDENT = "                                      + ";
    static const unsigned int LENGTH = strlen( pINDENT );

    if ( numIndents > LENGTH ) numIndents = LENGTH;

    return &pINDENT[ LENGTH-numIndents ];
}



void dump_to_stdout( const TiXmlNode * pParent, unsigned int indent = 0 )
{
    if ( !pParent ) return;

    const TiXmlText *pText;
    int t = pParent->Type();
    printf( "%s", getIndent( indent));

    switch ( t )
    {
    case TiXmlNode::DOCUMENT:
        printf( "Document" );
        break;

    case TiXmlNode::ELEMENT:
        printf( "Element \"%s\"", pParent->Value() );
        break;

    case TiXmlNode::COMMENT:
        printf( "Comment: \"%s\"", pParent->Value());
        break;

    case TiXmlNode::UNKNOWN:
        printf( "Unknown" );
        break;

    case TiXmlNode::TEXT:
        pText = pParent->ToText();
        printf( "Text: [%s]", pText->Value() );
        break;

    case TiXmlNode::DECLARATION:
        printf( "Declaration" );
        break;
    default:
        break;
    }
    printf( "\n" );

    const TiXmlNode * pChild;

    for ( pChild = pParent->FirstChild(); pChild != 0; pChild = pChild->NextSibling()) 
    {
        dump_to_stdout( pChild, indent+2 );
    }
}

}

void
tolower(std::string& str)
{
    std::transform(str.begin(), str.end(), str.begin(), (int(*)(int))std::tolower);
}

std::string
normalize_filename(const std::string& str)
{
    std::string newstring;

    std::string::size_type last_slash = str.find_last_of('/', str.size());
    if ( last_slash == std::string::npos ) newstring = str;
    else newstring = str.substr(last_slash+1);
    
    for (std::string::iterator i=newstring.begin(), e=newstring.end(); i!=e; ++i)
    {
        if ( *i == '.' ) *i = '_';
    }

    tolower(newstring);

    return newstring;
}

/* Could be an XMLTester class private but oh well.. */
static int
checkBufferSuccess(geom::Geometry const& gRes, geom::Geometry const& gRealRes, double dist)
{
    int success = 1;
    do
    {

        if ( gRes.getGeometryTypeId() != gRealRes.getGeometryTypeId() )
        {
            std::cerr << "Expected result is of type "
                << gRes.getGeometryType()
                << "; obtained result is of type "
                << gRealRes.getGeometryType()
                << std::endl;
            success=0;
            break;
        }

        // Is a buffer always an area ?
        if ( gRes.getDimension() != 2 )
        {
            std::cerr << "Don't know how to validate "
                << "result of buffer operation "
                << "when expected result is not an "
                << "areal type."
                << std::endl;
        }
        

        geos::xmltester::BufferResultMatcher matcher;
        if ( ! matcher.isBufferResultMatch(gRealRes,
                           gRes,
                           dist) )
        {
std::cerr << "BufferResultMatcher FAILED" << std::endl;
            success=0;
            break;
        }

    }
    while (0);

    return success;
}

static int
checkSingleSidedBufferSuccess(geom::Geometry& gRes,
        geom::Geometry& gRealRes, double dist)
{
    int success = 1;
    do
    {

        if ( gRes.getGeometryTypeId() != gRealRes.getGeometryTypeId() )
        {
            std::cerr << "Expected result is of type "
                << gRes.getGeometryType()
                << "; obtained result is of type "
                << gRealRes.getGeometryType()
                << std::endl;
            success=0;
            break;
        }

        geos::xmltester::SingleSidedBufferResultMatcher matcher;
        if ( ! matcher.isBufferResultMatch(gRealRes,
                           gRes,
                           dist) )
        {
std::cerr << "SingleSidedBufferResultMatcher FAILED" << std::endl;
            success=0;
            break;
        }

    }
    while (0);

    return success;
}

XMLTester::XMLTester()
    :
    gA(0),
    gB(0),
    gT(0),
    pm(0),
    factory(0),
    wktreader(0),
    wktwriter(0),
    wkbreader(0),
    wkbwriter(0),
    test_predicates(0),
    failed(0),
    succeeded(0),
    caseCount(0),
    testCount(0),
    testFileCount(0),
    totalTestCount(0),
    curr_file(NULL),
    testValidOutput(false),
    testValidInput(false),
    sqlOutput(false),
    HEXWKB_output(false)
{
    setVerbosityLevel(0);
}

int
XMLTester::setVerbosityLevel(int value)
{
    int old_value=verbose;

    verbose=value;

    return old_value;
}

/*private*/
void
XMLTester::printTest(bool success, const std::string& expected_result, const std::string& actual_result, const util::Profile &prof)
{
    if ( sqlOutput )
    {
        std::cout << "INSERT INTO \"" << normalize_filename(*curr_file) << "\" VALUES ("
                  << caseCount << ", "
                  << testCount << ", "
                  << "'" << opSignature << "', "
                  << "'" << curr_case_desc << "', ";

        std::string geomOut;

        if ( gA ) {
            std::cout << "'" << printGeom(gA) << "', ";
        } else {
            std::cout << "NULL, ";
        }

        if ( gB ) {
            std::cout << "'" << printGeom(gB) << "', ";
        } else {
            std::cout << "NULL, ";
        }

        std::cout << "'" << expected_result << "', "
                  << "'" << actual_result << "', ";

        if ( success ) std::cout << "'t'";
        else std::cout << "'f'";

        std::cout << ");" << std::endl;
    }

    else
    {
        std::cout << *curr_file <<":";
        std::cout << " case" << caseCount << ":";
        std::cout << " test" << testCount << ": "
            << opSignature; 
        std::cout << ": " << (success?"ok.":"failed.");
        std::cout << " (" << std::setprecision(15) << round(prof.getTot()/1000) << " ms)" << std::endl;

        std::cout << "\tDescription: " << curr_case_desc << std::endl;


        if ( gA ) {
            std::cout << "\tGeometry A: ";
            printGeom(std::cout, gA);
            std::cout << std::endl;
        }

        if ( gB ) {
            std::cout << "\tGeometry B: ";
            printGeom(std::cout, gB);
            std::cout << std::endl;
        }

        std::cout << "\tExpected result: "<<expected_result<<std::endl;
        std::cout << "\tObtained result: "<<actual_result<<std::endl;
        std::cout <<std::endl;
    }
}

void
XMLTester::run(const std::string &source)
{
    curr_file=&source;

    if ( sqlOutput )
    {
        std::cout << "CREATE TABLE \"" << normalize_filename(*curr_file) << "\"" 
                  << "( caseno integer, testno integer, " 
              << " operation varchar, description varchar, "
              << " a geometry, b geometry, expected geometry, "
              << " obtained geometry, result bool )"

              // NOTE: qgis 0.7.4 require oids for proper operations.
              //       The 'WITH OIDS' parameter is supported back to
              //       PostgreSQL 7.2, so if you run an older version
              //       rebuild with the next line commented out.
              << " WITH OIDS"

              << ";" << std::endl;
    }

    ++testFileCount;

    caseCount=0;

    if ( ! xml.LoadFile(source.c_str()) )
    {
        std::stringstream err;
        err << "Could not load " << source << ": " << xml.ErrorDesc();
        throw runtime_error(err.str());
    }

    //dump_to_stdout(&xml);

    const TiXmlNode* node = xml.FirstChild("run");

    if ( ! node )
      throw(runtime_error("Document has no childs"));

    parseRun(node);

}

void 
XMLTester::resultSummary(std::ostream &os) const
{
    os<<"Files: "<<testFileCount<<std::endl;
    os<<"Tests: "<<totalTestCount<<std::endl;
    os<<"Failed: "<<failed<<std::endl;
    os<<"Succeeded: "<<succeeded<<std::endl;
}

void 
XMLTester::resetCounters() 
{
    testFileCount=totalTestCount=failed=succeeded=0;
}

void
XMLTester::parseRun(const TiXmlNode* node)
{
    using geos::geom::PrecisionModel;

    assert(node);

    //dump_to_stdout(node);

    // Look for precisionModel element
    const TiXmlElement* el = node->FirstChildElement("precisionModel");
    if ( el ) parsePrecisionModel(el);
    else pm.reset(new PrecisionModel());

    if (verbose > 1)
    {
        std::cerr << *curr_file <<": run: Precision Model: " << pm->toString() <<std::endl;
    }

    factory = geom::GeometryFactory::create(pm.get());
    wktreader.reset(new io::WKTReader(factory.get()));
    wktwriter.reset(new io::WKTWriter());
    wkbreader.reset(new io::WKBReader(*factory));
    wkbwriter.reset(new io::WKBWriter());

    const TiXmlNode* casenode;
    for ( casenode = node->FirstChild("case");
          casenode;
          casenode = casenode->NextSibling("case") )
    {
        try {
            parseCase(casenode);
        } catch (const std::exception& exc) {
            std::cerr<<exc.what()<<std::endl;
        }
    }

}

void
XMLTester::parsePrecisionModel(const TiXmlElement* el)
{
    using geos::geom::PrecisionModel;

    //dump_to_stdout(el);

    /* This does not seem to work... */
    std::string type;
    const char* typeStr = el->Attribute("type");
    if ( typeStr ) type = typeStr;

    const char* scaleStr = el->Attribute("scale");

    if ( ! scaleStr ) {
        if ( type == "FLOATING_SINGLE" )
        {
            pm.reset(new PrecisionModel(PrecisionModel::FLOATING_SINGLE));
        }
        else
        {
            pm.reset(new PrecisionModel());
        }
    } else {

        char* stopstring;

        double scale = std::strtod(scaleStr, &stopstring);
        double offsetX = 0;
        double offsetY = 2;

        if ( ! el->QueryDoubleAttribute("offsetx", &offsetX) )
        {} // std::cerr << "No offsetx" << std::endl;

        if ( ! el->QueryDoubleAttribute("offsety", &offsetY) )
        {} // std::cerr << "No offsety" << std::endl;

        // NOTE: PrecisionModel discards offsets anyway...
        pm.reset(new PrecisionModel(scale, offsetX, offsetY));
    }
}


bool
XMLTester::testValid(const geom::Geometry* g, const std::string& label)
{
    operation::valid::IsValidOp ivo(g);
    bool valid = ivo.isValid();
    if ( ! valid )
    {
        operation::valid::TopologyValidationError *err = ivo.getValidationError();
        std::cerr << *curr_file << ":"
              << " case" << caseCount << ":"
              << " test" << testCount << ": "
              << opSignature << ": " 
              << " invalid geometry (" << label 
              << "): " << err->toString() << std::endl;
    }
    return valid;
}

/**
 * Parse WKT or HEXWKB
 */
geom::Geometry *
XMLTester::parseGeometry(const std::string &in, const char* label)
{
    if ( ( ! wkbreader.get() ) || ( ! wktreader.get() ) )
        throw(runtime_error("No precision model specified"));

    std::stringstream is(in, std::ios_base::in);
    char first_char;

    // Remove leading spaces
    while (is.get(first_char) && std::isspace(first_char));
    is.unget();

    geom::Geometry* ret;

    switch (first_char)
    {
        case '0':
        case '1':
        case '2':
        case '3':
        case '4':
        case '5':
        case '6':
        case '7':
        case '8':
        case '9':
        case 'A':
        case 'B':
        case 'C':
        case 'D':
        case 'E':
        case 'F':
            ret = wkbreader->readHEX(is);
            break;
        default:
            ret = wktreader->read(in);
            break;
    }

    if ( testValidInput ) testValid(ret, std::string(label));

    //ret->normalize();

    return ret;
}

std::string 
XMLTester::trimBlanks(const std::string &in)
{
    std::string out;
    std::string::size_type pos = in.find_first_not_of(" \t\n\r");
    if (pos!=std::string::npos) out=in.substr(pos);
    pos = out.find_last_not_of(" \t\n\r");
    if (pos!=std::string::npos) out=out.substr(0, pos+1);
    return out;
}

void
XMLTester::parseCase(const TiXmlNode* node)
{
    assert(node);

    std::string geomAin;
    std::string geomBin;
    std::string thrownException;

    gA=NULL;
    gB=NULL;


    //dump_to_stdout(node);

    curr_case_desc.clear();
    const TiXmlNode* txt = node->FirstChild("desc");
    if ( txt ) {
        txt = txt->FirstChild();
        if ( txt ) curr_case_desc = trimBlanks(txt->Value());
    }

    //std::cerr << "Desc: " << curr_case_desc << std::endl;


    try {
        const TiXmlNode *el = node->FirstChild("a");
        geomAin = el->FirstChild()->Value();
        geomAin = trimBlanks(geomAin);
        gA = parseGeometry(geomAin, "Geometry A");

        if ( 0 != (el = node->FirstChild("b")) )
        {
            geomBin = el->FirstChild()->Value();
            geomBin = trimBlanks(geomBin);
            gB = parseGeometry(geomBin, "Geometry B");
        }
    }
    catch (const std::exception &e) {
        thrownException = e.what();
    }
    catch (...) {
        thrownException = "Unknown exception";
    }

//std::cerr << "A: " << geomAin << std::endl;
//std::cerr << "B: " << geomBin << std::endl;


    if ( thrownException != "" )
    {
        std::cout << *curr_file <<":";
        std::cout << " case" << caseCount << ":";
        std::cout << " skipped ("<<thrownException<<")."<<std::endl;
        return;
    }

    ++caseCount;
    testCount=0;

    const TiXmlNode* testnode;
    for ( testnode = node->FirstChild("test");
          testnode;
          testnode = testnode->NextSibling("test") )
    {
        parseTest(testnode);
    }

    totalTestCount+=testCount;
        
    delete gA;
    delete gB;
}

/*private*/
void
XMLTester::printGeom(std::ostream& os, const geom::Geometry *g)
{
    os << printGeom(g);
}

std::string
XMLTester::printGeom(const geom::Geometry *g)
{
    if ( HEXWKB_output )
    {
        std::stringstream s(std::ios_base::binary|std::ios_base::in|std::ios_base::out);
        wkbwriter->write(*g, s);
        std::stringstream s2;
        wkbreader->printHEX(s, s2);
        return s2.str();
    }
    else
    {
        return wktwriter->write(g);
    }
}

void
XMLTester::parseTest(const TiXmlNode* node)
{
    using namespace operation::overlay;

    typedef std::auto_ptr< geom::Geometry > GeomAutoPtr;

    int success=0; // no success by default
    std::string opName;
    std::string opArg1;
    std::string opArg2;
    std::string opArg3;
    std::string opArg4;
    std::string opRes;

    ++testCount;

    const TiXmlNode* opnode = node->FirstChild("op");
    if ( ! opnode ) throw(runtime_error("case has no op"));

    //dump_to_stdout(opnode);

    const TiXmlElement* opel = opnode->ToElement();

    const char* tmp = opel->Attribute("name");
    if ( tmp ) opName = tmp;

    tmp = opel->Attribute("arg1");
    if ( tmp ) opArg1 = tmp;

    tmp = opel->Attribute("arg2");
    if ( tmp ) opArg2 = tmp;

    tmp = opel->Attribute("arg3");
    if ( tmp ) opArg3 = tmp;

    tmp = opel->Attribute("arg4");
    if ( tmp ) opArg4 = tmp;

    const TiXmlNode* resnode = opnode->FirstChild();
    if ( ! resnode )
    {
        std::stringstream tmp;
        tmp << "op of test " << testCount
            << " of case " << caseCount
            << " has no expected result child";
        throw(runtime_error(tmp.str()));
    }
    opRes = resnode->Value();

    // trim blanks
    opRes=trimBlanks(opRes);
    opName=trimBlanks(opName);
    tolower(opName);

    std::string opSig="";

    if ( opArg1 != "" ) opSig=opArg1;
    if ( opArg2 != "" ) {
        if ( opSig != "" ) opSig += ", ";
        opSig += opArg2;
    }
    if ( opArg3 != "" ) {
        if ( opSig != "" ) opSig += ", ";
        opSig += opArg3;
    }
    if ( opArg4 != "" ) {
        if ( opSig != "" ) opSig += ", ";
        opSig += opArg4;
    }

    opSignature = opName + "(" + opSig + ")";

    std::string actual_result="NONE";

    // expected_result will be modified by specific tests
    // if needed (geometry normalization, for example)
    std::string expected_result=opRes;

    util::Profile profile("op");

    try
    {
        if (opName=="relate")
        {
            std::auto_ptr<geom::IntersectionMatrix> im(gA->relate(gB));
            assert(im.get());

            if (im->matches(opArg3)) actual_result="true";
            else actual_result="false";

            if (actual_result==opRes) success=1;
        }
        else if (opName=="relatestring")
        {
            std::auto_ptr<geom::IntersectionMatrix> im(gA->relate(gB));
            assert(im.get());

            actual_result=im->toString();

            if (actual_result==opRes) success=1;
        }

        else if (opName=="isvalid")
        {
            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) {
                gT=gB;
            } 

            if (gT->isValid()) actual_result="true";
            else actual_result="false";

            if (actual_result==opRes) success=1;

        }

        else if (opName=="intersection")
        {

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            profile.start();

#ifndef USE_BINARYOP
            GeomAutoPtr gRealRes(gA->intersection(gB));
#else
            GeomAutoPtr gRealRes = BinaryOp(gA, gB, overlayOp(OverlayOp::opINTERSECTION));
#endif

            profile.stop();

            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="union")
        {
            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));

            GeomAutoPtr gRealRes;
            if ( gB ) {
#ifndef USE_BINARYOP
                gRealRes.reset(gA->Union(gB));
#else
                gRealRes = BinaryOp(gA, gB, overlayOp(OverlayOp::opUNION));
#endif
            } else {
                gRealRes = gA->Union();
            }

            if (gRes->equals(gRealRes.get())) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="difference")
        {

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

#ifndef USE_BINARYOP
            GeomAutoPtr gRealRes(gA->difference(gB));
#else
            GeomAutoPtr gRealRes = BinaryOp(gA, gB, overlayOp(OverlayOp::opDIFFERENCE));
#endif
            
            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="symdifference")
        {
            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

#ifndef USE_BINARYOP
            GeomAutoPtr gRealRes(gA->symDifference(gB));
#else
            GeomAutoPtr gRealRes = BinaryOp(gA, gB, overlayOp(OverlayOp::opSYMDIFFERENCE));
#endif

            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="intersects")
        {
            geom::Geometry *g1 = opArg1 == "B" ? gB : gA;
            geom::Geometry *g2 = opArg2 == "B" ? gB : gA;

            if (g1->intersects(g2)) actual_result="true";
            else actual_result="false";
            
            if (actual_result==opRes) success=1;
        }

        else if (opName=="contains")
        {
            geom::Geometry *g1 = opArg1 == "B" ? gB : gA;
            geom::Geometry *g2 = opArg2 == "B" ? gB : gA;

            if (g1->contains(g2)) actual_result="true";
            else actual_result="false";
            
            if (actual_result==opRes) success=1;
        }

        else if (opName=="within")
        {
            geom::Geometry *g1 = opArg1 == "B" ? gB : gA;
            geom::Geometry *g2 = opArg2 == "B" ? gB : gA;

            if (g1->within(g2)) actual_result="true";
            else actual_result="false";
            
            if (actual_result==opRes) success=1;
        }

        else if (opName=="covers")
        {
            geom::Geometry *g1 = opArg1 == "B" ? gB : gA;
            geom::Geometry *g2 = opArg2 == "B" ? gB : gA;

            if (g1->covers(g2)) actual_result="true";
            else actual_result="false";
            
            if (actual_result==opRes) success=1;
        }

        else if (opName=="coveredby")
        {
            geom::Geometry *g1 = opArg1 == "B" ? gB : gA;
            geom::Geometry *g2 = opArg2 == "B" ? gB : gA;

            if (g1->coveredBy(g2)) actual_result="true";
            else actual_result="false";
            
            if (actual_result==opRes) success=1;
        }

        else if (opName=="getboundary")
        {
            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            GeomAutoPtr gRealRes(gT->getBoundary());
            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="getcentroid")
        {
            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            GeomAutoPtr gRealRes(gT->getCentroid());

            if ( gRealRes.get() ) gRealRes->normalize();
            else gRealRes.reset(factory->createPoint());
            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput ) 
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="issimple")
        {
            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            if (gT->isSimple()) actual_result="true";
            else actual_result="false";

            if (actual_result==opRes) success=1;

        }

        else if (opName=="convexhull")
        {
            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            GeomAutoPtr gRealRes(gT->convexHull());
            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput ) 
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="buffer")
        {
            using namespace operation::buffer;

            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            profile.start();

            GeomAutoPtr gRealRes;
            double dist = std::atof(opArg2.c_str());

            BufferParameters params;
            if ( opArg3 != "" ) {
        params.setQuadrantSegments(std::atoi(opArg3.c_str()));
            }
            

            BufferOp op(gT, params);
            gRealRes.reset(op.getResultGeometry(dist));

            profile.stop();
            gRealRes->normalize();

            // Validate the buffer operation
            success = checkBufferSuccess(*gRes, *gRealRes, dist);

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="buffersinglesided")
        {
            using namespace operation::buffer;

            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            profile.start();

            GeomAutoPtr gRealRes;
            double dist = std::atof(opArg2.c_str());
                
            BufferParameters params ;
            params.setJoinStyle( BufferParameters::JOIN_ROUND ) ;
            if ( opArg3 != "" ) {
        params.setQuadrantSegments( std::atoi(opArg3.c_str()));
            }
            
            bool leftSide = true ;
            if ( opArg4 == "right" )
            {
                leftSide = false ;
            }

            BufferBuilder bufBuilder( params ) ;
            gRealRes.reset( bufBuilder.bufferLineSingleSided(
                                         gT, dist, leftSide ) ) ;

            profile.stop();
            gRealRes->normalize();

            // Validate the single sided buffer operation
            success = checkSingleSidedBufferSuccess(*gRes,
                    *gRealRes, dist);

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="buffermitredjoin")
        {
            using namespace operation::buffer;

            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            profile.start();

            GeomAutoPtr gRealRes;
            double dist = std::atof(opArg2.c_str());

            BufferParameters params;
            params.setJoinStyle(BufferParameters::JOIN_MITRE);

            if ( opArg3 != "" ) {
        params.setQuadrantSegments(std::atoi(opArg3.c_str()));
            }

            BufferOp op(gT, params);
            gRealRes.reset(op.getResultGeometry(dist));

            profile.stop();
            gRealRes->normalize();

            // Validate the buffer operation
            success = checkBufferSuccess(*gRes, *gRealRes, dist);

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput ) 
                success &= int(testValid(gRealRes.get(), "result"));
        }


        else if (opName=="getinteriorpoint")
        {
            geom::Geometry *gT=gA;
            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            GeomAutoPtr gRes(parseGeometry(opRes, "expected"));
            gRes->normalize();

            GeomAutoPtr gRealRes(gT->getInteriorPoint());
            if ( gRealRes.get() ) gRealRes->normalize();
            else gRealRes.reset(factory->createPoint());

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput ) 
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="iswithindistance")
        {
            double dist=std::atof(opArg3.c_str());
            if (gA->isWithinDistance(gB, dist)) {
                actual_result="true";
            } else {
                actual_result="false";
            }

            if (actual_result==opRes) success=1;

        }

        else if (opName=="polygonize")
        {

            GeomAutoPtr gRes(wktreader->read(opRes));
            gRes->normalize();

            Polygonizer plgnzr;
            plgnzr.add(gA);


            std::vector<geos::geom::Polygon *>*polys = plgnzr.getPolygons();
            std::vector<geom::Geometry *>*newgeoms = new std::vector<geom::Geometry *>;
            for (unsigned int i=0; i<polys->size(); i++)
                newgeoms->push_back((*polys)[i]);
            delete polys;

            GeomAutoPtr gRealRes(factory->createGeometryCollection(newgeoms));
            gRealRes->normalize();


            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput )
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="linemerge")
        {
            GeomAutoPtr gRes(wktreader->read(opRes));
            gRes->normalize();

            geom::Geometry *gT=gA;

            if ( ( opArg1 == "B" || opArg1 == "b" ) && gB ) gT=gB;

            LineMerger merger;
            merger.add(gT);
            std::auto_ptr< std::vector<geom::LineString *> > lines ( merger.getMergedLineStrings() );
            std::vector<geom::Geometry *>*newgeoms = new std::vector<geom::Geometry *>(lines->begin(),
                    lines->end());

            GeomAutoPtr gRealRes(factory->createGeometryCollection(newgeoms));
            gRealRes->normalize();

            if (gRes->compareTo(gRealRes.get())==0) success=1;

            actual_result=printGeom(gRealRes.get());
            expected_result=printGeom(gRes.get());

            if ( testValidOutput ) 
                success &= int(testValid(gRealRes.get(), "result"));
        }

        else if (opName=="areatest")
        {
            char* rest;
            double toleratedDiff = std::strtod(opRes.c_str(), &rest);
            int validOut = 1;

            if ( rest == opRes.c_str() )
            {
                throw std::runtime_error("malformed testcase: missing tolerated area difference in 'areatest' op");
            }

            if ( verbose > 1 )
            {
        std::cerr << "Running intersection for areatest" << std::endl;
            }
#ifndef USE_BINARYOP
            GeomAutoPtr gI(gA->intersection(gB));
#else
            GeomAutoPtr gI = BinaryOp(gA, gB,
                    overlayOp(OverlayOp::opINTERSECTION));
#endif

            if ( testValidOutput )
            {
                validOut &= int(testValid(gI.get(), "areatest intersection"));
            }

            if ( verbose > 1 )
            {
        std::cerr << "Running difference(A,B) for areatest" << std::endl;
            }

#ifndef USE_BINARYOP
            GeomAutoPtr gDab(gA->difference(gB));
#else
            GeomAutoPtr gDab = BinaryOp(gA, gB,
                    overlayOp(OverlayOp::opDIFFERENCE));
#endif

            if ( testValidOutput )
            {
                validOut &= int(testValid(gI.get(), "areatest difference(a,b)"));
            }

            if ( verbose > 1 )
            {
        std::cerr << "Running difference(B,A) for areatest" << std::endl;
            }

#ifndef USE_BINARYOP
            GeomAutoPtr gDba(gB->difference(gA));
#else
            GeomAutoPtr gDba = BinaryOp(gB, gA,
                    overlayOp(OverlayOp::opDIFFERENCE));
#endif

            if ( testValidOutput )
            {
                validOut &= int(testValid(gI.get(), "areatest difference(b,a)"));
            }

            if ( verbose > 1 )
            {
        std::cerr << "Running symdifference for areatest" << std::endl;
            }

#ifndef USE_BINARYOP
            GeomAutoPtr gSD(gA->symDifference(gB));
#else
            GeomAutoPtr gSD = BinaryOp(gA, gB,
                    overlayOp(OverlayOp::opSYMDIFFERENCE));
#endif

            if ( testValidOutput )
            {
                validOut &= int(testValid(gI.get(), "areatest symdifference"));
            }

            if ( verbose > 1 )
            {
        std::cerr << "Running union for areatest" << std::endl;
            }

#ifndef USE_BINARYOP
            GeomAutoPtr gU(gA->Union(gB));
#else
            GeomAutoPtr gU = BinaryOp(gA, gB,
                    overlayOp(OverlayOp::opUNION));
#endif

            double areaA = gA->getArea();
            double areaB = gB->getArea();
            double areaI = gI->getArea(); 
            double areaDab = gDab->getArea();
            double areaDba = gDba->getArea();
            double areaSD = gSD->getArea();
            double areaU = gU->getArea();

            double maxdiff = 0;
            std::string maxdiffop;

            // @ : symdifference
            // - : difference
            // + : union
            // ^ : intersection
        
            // A == ( A ^ B ) + ( A - B )
            double diff = std::fabs ( areaA - areaI - areaDab );
            if ( diff > maxdiff ) {
                maxdiffop = "A == ( A ^ B ) + ( A - B )";
                maxdiff = diff;
            }

            // B == ( A ^ B ) + ( B - A )
            diff = std::fabs ( areaB - areaI - areaDba );
            if ( diff > maxdiff ) {
                maxdiffop = "B == ( A ^ B ) + ( B - A )";
                maxdiff = diff;
            }

            //  ( A @ B ) == ( A - B ) + ( B - A )
            diff = std::fabs ( areaDab + areaDba - areaSD );
            if ( diff > maxdiff ) {
                maxdiffop = "( A @ B ) == ( A - B ) + ( B - A )";
                maxdiff = diff;
            }

            //  ( A u B ) == ( A ^ B ) + ( A @ B )
            diff = std::fabs ( areaI + areaSD - areaU );
            if ( diff > maxdiff ) {
                maxdiffop = "( A u B ) == ( A ^ B ) + ( A @ B )";
                maxdiff = diff;
            }

            if ( maxdiff <= toleratedDiff )
            {
                success = 1 && validOut;
            }

            std::stringstream tmp;
            tmp << maxdiffop << ": " << maxdiff;
            actual_result=tmp.str();
            expected_result=opRes;

        }
        else if (opName=="distance")
        {
            char* rest;
            double distE = std::strtod(opRes.c_str(), &rest);
            if ( rest == opRes.c_str() )
            {
                throw std::runtime_error("malformed testcase: missing expected result in 'distance' op");
            }

            geom::Geometry *g1 = opArg1 == "B" ? gB : gA;
            geom::Geometry *g2 = opArg2 == "B" ? gB : gA;
            double distO = g1->distance(g2);
            std::stringstream ss; ss << distO; 
            actual_result = ss.str();

            // TODO: Use a tolerance ?
            success = ( distO == distE ) ? 1 : 0;
        }

        else
        {
            std::cerr << *curr_file << ":";
            std::cerr << " case" << caseCount << ":";
            std::cerr << " test" << testCount << ": "
                      << opName << "(" << opSig << ")";
            std::cerr << ": skipped (unrecognized)." << std::endl;
            return;
        }

    }
    catch (const std::exception &e)
    {
        std::cerr<<"EXCEPTION on case "<<caseCount
            <<" test "<<testCount<<": "<<e.what()
            <<std::endl;
        actual_result = e.what();
    }
    catch (...)
    {
        std::cerr << "Unknown EXEPTION on case "
                  << caseCount
                  << std::endl;
        actual_result = "Unknown exception thrown";
    }

    if ( success ) ++succeeded;
    else ++failed;

    if ((!success && verbose) || verbose > 1)
    {
        printTest(!!success, expected_result, actual_result, profile);
    }

    if (test_predicates && gB && gA) {
        runPredicates(gA, gB);
    }

}

void
XMLTester::runPredicates(const geom::Geometry *gA, const geom::Geometry *gB)
{
    std::cout << "\t    Equals:\tAB=" << (gA->equals(gB)?"T":"F") << ", BA=" << (gB->equals(gA)?"T":"F") << std::endl;
    std::cout << "\t  Disjoint:\tAB=" << (gA->disjoint(gB)?"T":"F") << ", BA=" << (gB->disjoint(gA)?"T":"F") << std::endl;
    std::cout << "\tIntersects:\tAB=" << (gA->intersects(gB)?"T":"F") << ", BA=" << (gB->intersects(gA)?"T":"F") << std::endl;
    std::cout << "\t   Touches:\tAB=" << (gA->touches(gB)?"T":"F") << ", BA=" << (gB->touches(gA)?"T":"F") << std::endl;
    std::cout << "\t   Crosses:\tAB=" << (gA->crosses(gB)?"T":"F") << ", BA=" << (gB->crosses(gA)?"T":"F") << std::endl;
    std::cout << "\t    Within:\tAB=" << (gA->within(gB)?"T":"F") << ", BA=" << (gB->within(gA)?"T":"F") << std::endl;
    std::cout << "\t  Contains:\tAB=" << (gA->contains(gB)?"T":"F") << ", BA=" << (gB->contains(gA)?"T":"F") << std::endl;
    std::cout << "\t  Overlaps:\tAB=" << (gA->overlaps(gB)?"T":"F") << ", BA=" << (gB->overlaps(gA)?"T":"F") << std::endl;
}

XMLTester::~XMLTester()
{
}


static void
usage(char *me, int exitcode, std::ostream &os)
{
    os << "Usage: " << me << " [options] <test> [<test> ...]" << std::endl;
    os << "Options: " << std::endl;
    os << " -v                  Verbose mode "
       << "(multiple -v increment verbosity)" << std::endl
       << "--test-valid-output  Test output validity" << std::endl
       << "--test-valid-input   Test input validity" << std::endl
       << "--sql-output         Produce SQL output" << std::endl
       << "--wkb-output         Print Geometries as HEXWKB" << std::endl;

    std::exit(exitcode);
}

void
request_interrupt(int sig)
{
  geos::util::Interrupt::request();
}

int
main(int argC, char* argV[])
{
    int verbose=0;
    bool sql_output=false;

#if defined(_MSC_VER) && defined(GEOS_TEST_USE_STACKWALKER)
    InitAllocCheck();
    {
#endif

    if ( argC < 2 ) usage(argV[0], 1, std::cerr);

    signal(15, request_interrupt);

    XMLTester tester;
    tester.setVerbosityLevel(verbose);

    for (int i=1; i<argC; ++i)
    {
        // increment verbosity level
        if ( ! std::strcmp(argV[i], "-v" ) )
        {
            ++verbose;
            tester.setVerbosityLevel(verbose);
            continue;
        }
        if ( ! std::strcmp(argV[i], "--test-valid-output" ) )
        {
            tester.testOutputValidity(true);
            continue;
        }
        if ( ! std::strcmp(argV[i], "--sql-output" ) )
        {
            sql_output = true;
            tester.setSQLOutput(sql_output);
            continue;
        }
        if ( ! std::strcmp(argV[i], "--wkb-output" ) )
        {
            sql_output = true;
            tester.setHEXWKBOutput(sql_output);
            continue;
        }
        if ( ! std::strcmp(argV[i], "--test-valid-input" ) )
        {
            tester.testInputValidity(true);
            continue;
        }

        std::string source = argV[i];

        try {
            tester.run(source);
        } catch (const std::exception& exc) {
            std::cerr<<exc.what()<<std::endl;
        }
    }

    if ( ! sql_output ) tester.resultSummary(std::cout);
    else tester.resultSummary(std::cerr);

    io::Unload::Release();

    return tester.getFailuresCount();

#if defined(_MSC_VER) && defined(GEOS_TEST_USE_STACKWALKER)
    }
    DeInitAllocCheck();
#endif

}

/**********************************************************************
 * $Log: XMLTester.cpp,v $
 * Revision 1.38  2006/07/13 03:59:10  csavage
 * Changes to compile on VC++ - fully qualified polygon name.  Should also work on MingW, will test next.
 *
 * Revision 1.37  2006/06/19 20:48:35  strk
 * parseCase(): make sure to exit the <case> tag before returning
 *
 * Revision 1.36  2006/06/14 19:19:10  strk
 * Added support for "AreaTest" operations.
 *
 * Revision 1.35  2006/06/12 10:39:29  strk
 * don't print test file precision model if verbosity level < 2.
 *
 * Revision 1.34  2006/06/05 15:36:34  strk
 * Given OverlayOp funx code enum a name and renamed values to have a lowercase prefix. Drop all of noding headers from installed header set.
 *
 * Revision 1.33  2006/05/19 16:38:22  strk
 *         * tests/xmltester/XMLTester.cpp: report
 *         error on load of requested tests.
 *
 * Revision 1.32  2006/04/14 14:57:15  strk
 * XMLTester binary ops invoked using the new BinaryOp template function.
 *
 * Revision 1.31  2006/04/07 13:26:38  strk
 * Use of auto_ptr<> to prevent confusing leaks in tester
 *
 * Revision 1.30  2006/03/22 16:01:33  strk
 * indexBintree.h header split, classes renamed to match JTS
 *
 * Revision 1.29  2006/03/17 14:56:39  strk
 * Fixed filename normalizer for sql output
 **********************************************************************/