
// -*- mode: c++; c-basic-offset:4 -*-

// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.

// Copyright (c) 2005 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.

#include <cppunit/TextTestRunner.h>
#include <cppunit/extensions/TestFactoryRegistry.h>
#include <cppunit/extensions/HelperMacros.h>

#include <string>

#include "GNURegex.h"
#include "Error.h"
#include "debug.h"

using namespace CppUnit;
using namespace libdap;

class RegexTest: public TestFixture {
private:

public:
    RegexTest() {}
    ~RegexTest() {}

    void setUp() { 
    } 

    void tearDown() { 
    }

    CPPUNIT_TEST_SUITE( RegexTest );

    CPPUNIT_TEST(ctor_test);
    CPPUNIT_TEST(match_test);
#if 1
    CPPUNIT_TEST(search_test);
#endif

    CPPUNIT_TEST_SUITE_END();

    void ctor_test() {
        try {
            Regex r("abc");
            CPPUNIT_ASSERT(1);
        }
        catch (Error &e) {
            cerr << "Error: " << e.get_error_message() << endl;
            CPPUNIT_ASSERT(!"Error building object");
        }

        try {
            Regex r("");
            CPPUNIT_ASSERT(1);
        }
        catch (Error &e) {
            cerr << "Error: " << e.get_error_message() << endl;
            CPPUNIT_ASSERT(!"Error building object");
        }

        try {
            Regex r(".*");
            CPPUNIT_ASSERT(1);
        }
        catch (Error &e) {
            cerr << "Error: " << e.get_error_message() << endl;
            CPPUNIT_ASSERT(!"Error building object");
        }
    }
    
    void match_test() {
        Regex simple("abc");
        string s1 = "123abcdef";
	DBG(cerr << "simple.match(s1.c_str(), s1.length()): "
	     << simple.match(s1.c_str(), s1.length()) << endl);

        CPPUNIT_ASSERT(simple.match(s1.c_str(), s1.length()) == 3);
        CPPUNIT_ASSERT(simple.match(s1.c_str(), s1.length(), 4) == -1);
        
        Regex pattern("3.b");
	DBG(cerr << "pattern.match(s1.c_str(), s1.length()): "
	     << pattern.match(s1.c_str(), s1.length()) << endl);

        CPPUNIT_ASSERT(pattern.match(s1.c_str(), s1.length()) == 3);
        string s2 = "123acd";        
        CPPUNIT_ASSERT(pattern.match(s2.c_str(), s2.length()) == -1);

        Regex exclusion("[^123]+");
	DBG(cerr << "exclusion.match(s1.c_str(), s1.length()): "
	     << exclusion.match(s1.c_str(), s1.length()) << endl);

        CPPUNIT_ASSERT(exclusion.match(s1.c_str(), s1.length()) == 6);
        
        Regex exclusion_range("[^0-9]+");
        CPPUNIT_ASSERT(exclusion_range.match(s1.c_str(), s1.length()) == 6);
    }    

    void search_test() {
        int matchlen;
        
        Regex simple("abc");
        string s1 = "123abcdef";
        CPPUNIT_ASSERT(simple.search(s1.c_str(), s1.length(), matchlen, 0) == 3);
        CPPUNIT_ASSERT(matchlen == 3);
        CPPUNIT_ASSERT(simple.search(s1.c_str(), s1.length(), matchlen, 4) == -1);
        
        Regex pattern("[a-z]+");
        CPPUNIT_ASSERT(pattern.search(s1.c_str(), s1.length(), matchlen) == 3);
        CPPUNIT_ASSERT(matchlen == 6);
       
        string s2 = "123abc123abcd";        
        CPPUNIT_ASSERT(pattern.search(s2.c_str(), s2.length(), matchlen) == 3);
        CPPUNIT_ASSERT(matchlen == 3);
    }

};

CPPUNIT_TEST_SUITE_REGISTRATION(RegexTest);

int 
main( int, char** )
{
    CppUnit::TextTestRunner runner;
    runner.addTest( CppUnit::TestFactoryRegistry::getRegistry().makeTest() );

    bool wasSuccessful = runner.run( "", false ) ;

    return wasSuccessful ? 0 : 1;
}
