/*
   Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program 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 General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

/*
 * Properties.cpp
 *
 */

#include <sstream>
#include <cassert>
#include <cstdlib>

#include "Properties.hpp"

using std::cout;
using std::wcout;
using std::endl;
using std::string;
using std::wstring;
using std::stringbuf;

using utils::Properties;

//template <class C, size_t N> size_t dim_array (C (&) [N]) { return N; }
// usage: int n = dim_array(array); // == sizeof(array)/sizeof(*array)

void test()
{
    cout << "--> test()" << endl;

    // test objects
    Properties p;
    const wstring k(L"key");
    const wstring v(L"value");
    const wstring w(L"");

    // test comments, empty lines
    const char* kv0[] = {
        "", "\n", "\r", "\n\n", "\n\r", "\r\n", "\r\r", "\r\n\r", "\n\r\n",
        "#", "#k", "#\n", "#\\", "#\\\\", "#\\\n", "#\\\n\n",
        "!", "!k", "!\n", "!\\", "!\\\\", "!\\\n", "!\\\n\n",
        " #k", "\f#k", "\t#k",
        "  #k", "\f #k", "\t #k",
        "#kkk", "#kkk vvv", "#kkk= vvv", "#kkk: vvv",
        "# kkk", "# kkk vvv", "# kkk= vvv", "# kkk: vvv",
    };
    const int n0 = sizeof(kv0)/sizeof(*kv0);
    for (int i = 0; i < n0; ++i ) {
        //cout << "[" << i << "] " << "'" << kv0[i] << "'" << endl;
        stringbuf sb(kv0[i]);
        p.load(sb);
        assert (p.size() == 0);
    }

    // test non-empty key, value pairs
    const char* kv1[] = {
        "key=value", "key=value\n", "key=value\r", "key=value\r\n",
        "key:value", "key=value\n", "key=value\r", "key=value\r\n",
        "key value", "key\fvalue", "key\tvalue", "key value\n",
        " key=value", "\fkey=value", "\tkey=value",
        "key =value", "key\f=value", "key\t=value",
        " key =value", "\fkey\f=value", "\tkey\t=value",
        "key= value", "key=\fvalue", "key=\tvalue",
        "key=  value", "key  value", "key   value", "key \t \fvalue",
    };
    const int n1 = sizeof(kv1)/sizeof(*kv1);
    for (int i = 0; i < n1; ++i ) {
        //cout << "[" << i << "] " << "'" << kv1[i] << "'" << endl;
        stringbuf sb(kv1[i]);
        p.load(sb);
        assert (p.size() == 1);
        Properties::const_iterator e = p.begin();
        //wcout << e->first << " => " << e->second << endl;
        assert (e->first == k);
        assert (e->second == v);
        p.clear();
    }

    // test single keys (empty values)
    const char* kv2[] = {
        "key", "key ", " key ", "key\n", " \fkey \t\n",
        "key=", "key =", "key= ", "key = ", "key=\n", " \fkey \t= \f\r\n",
    };
    const int n2 = sizeof(kv2)/sizeof(*kv2);
    for (int i = 0; i < n2; ++i ) {
        //cout << "[" << i << "] " << "'" << kv2[i] << "'" << endl;
        stringbuf sb(kv2[i]);
        p.load(sb);
        assert (p.size() == 1);
        Properties::const_iterator e = p.begin();
        //wcout << e->first << " => " << e->second << endl;
        assert (e->first == k);
        assert (e->second == w);
        p.clear();
    }

    // test escape sequences
    const char* kv3[] = {
        "key=value", "key=value\\\n", "key=value\\\r", "key=value\\\r\n",
        "k\\\ney=va\\\nlue", "k\\\rey=va\\\rlue", "k\\\r\ney=va\\\r\nlue",
        "k\\\n ey=va\\\n lue", "k\\\r ey=va\\\r lue", "k\\\r\n ey=va\\\r\n lue",
        "k\\\n\\\ney=va\\\n\\\nlue", "k\\\r\\\ney=va\\\r\\\nlue",
        "k\\\n \\\n  ey=va\\\n \\\n  lue", "k\\\r \\\n  ey=va\\\r \\\n  lue",
        "k\\ey=va\\lue",
        "\\u006b\\u0065\\u0079=\\u0076\\u0061\\u006C\\u0075\\u0065",
    };
    const int n3 = sizeof(kv3)/sizeof(*kv3);
    for (int i = 0; i < n3; ++i ) {
        //cout << "[" << i << "] " << "'" << kv3[i] << "'" << endl;
        stringbuf sb(kv3[i]);
        p.load(sb);
        assert (p.size() == 1);
        Properties::const_iterator e = p.begin();
        //wcout << e->first << " => " << e->second << endl;
        assert (e->first == k);
        assert (e->second == v);
        p.clear();
    }

    // test store
    const char* kv4 = ("\\ a\\ key\\ =\\ a value \n"
                       "key\\!=value\\!\n"
                       "key\\#=value\\#\n"
                       "key0=value0\n" "key1=value1\n"
                       "key2=\n" "key3=\n"
                       "key\\:=value\\:\n"
                       "key\\==value\\=\n");
    {
        //cout << "kv4='" << endl << kv4 << "'" << endl;
        stringbuf ib(kv4);
        p.load(ib);
        //cout << "p={" << endl << p << "}" << endl;

        stringbuf ob;
        p.store(ob);
        //cout << "ib='" << ib.str() << "'" << endl;
        //cout << "ob='" << ob.str() << "'" << endl;
        assert (ib.str() == ob.str());

        Properties q;
        q.load(ob);
        //cout << "q={" << endl << q << "}" << endl;
        assert (p == q);

        p.clear();
    }

    cout << "all tests passed." << endl;
    cout << "<-- test()" << endl;
}

void
exitUsage()
{
    cout << "usage: [options]" << endl
         << "    -p <file name>         properties file name" << endl
         << "    -h|--help              print usage message and exit" << endl
         << endl;
    exit(EXIT_FAILURE);
}

int
main(int argc, const char* argv[])
{
    cout << "--> main()" << endl;

    test();

    // parse and print a property file
    if (argc > 1) {
        const char* fn = NULL;
        const string arg = argv[1];
        if (arg.compare("-p") == 0) {
            if (argc < 3) {
                exitUsage();
            }
            fn = argv[2];
        } else if (arg.compare("-h") == 0 || arg.compare("--help") == 0) {
            exitUsage();
        } else {
            cout << "unknown option: " << arg << endl;
            exitUsage();
        }

        if (fn != NULL) {
            Properties p;
            cout << "read: " << fn << endl;
            p.load(fn);
            
            cout << "print:" << endl;
            wstring h(L"this header string passed to store() should be first");
            p.store(cout, &h);
        }
    }
    
    cout << "<-- main()" << endl;
    return 0;
}
