// -*- 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"

#include "GetOpt.h"

using namespace CppUnit;

using namespace libdap;

static bool debug = false;

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 argc, char*argv[])

{

    GetOpt getopt(argc, argv, "dh");

    int option_char;

    while ((option_char = getopt()) != -1)

        switch (option_char) {

        case 'd':

            debug = 1;  // debug is a static global

            break;

        case 'h': {     // help - show test names

            cerr << "Usage: RegexTest has the following tests:" << endl;

            const std::vector<Test*> &tests = RegexTest::suite()->getTests();

            unsigned int prefix_len = RegexTest::suite()->getName().append("::").length();

            for (std::vector<Test*>::const_iterator i = tests.begin(), e = tests.end(); i != e; ++i) {

                cerr << (*i)->getName().replace(0, prefix_len, "") << endl;

            }

            break;

        }

        default:

            break;

        }

    CppUnit::TextTestRunner runner;

    runner.addTest(CppUnit::TestFactoryRegistry::getRegistry().makeTest());

    bool wasSuccessful = true;

    string test = "";

    int i = getopt.optind;

    if (i == argc) {

        // run them all

        wasSuccessful = runner.run("");

    }

    else {

        for (; i < argc; ++i) {

            if (debug) cerr << "Running " << argv[i] << endl;

            test = RegexTest::suite()->getName().append("::").append(argv[i]);

            wasSuccessful = wasSuccessful && runner.run(test);

        }

    }

    return wasSuccessful ? 0 : 1;

}