// Copyright Vladimir Prus 2002-2004.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)


#include <boost/program_options/parsers.hpp>
#include <boost/program_options/options_description.hpp>
#include <boost/program_options/variables_map.hpp>
using namespace boost::program_options;
// We'll use po::value everywhere to workaround vc6 bug.
namespace po = boost::program_options;

#include <boost/function.hpp>
using namespace boost;

#include <sstream>
#include <iostream>
#include <iomanip>
using namespace std;

#if defined(__sun)
#include <stdlib.h> // for putenv on solaris
#else
#include <cstdlib> // for putenv
#endif

#include "minitest.hpp"

#define TEST_CHECK_THROW(expression, exception, description) \
    try \
    { \
        expression; \
        BOOST_ERROR(description);\
        throw 10; \
    } \
    catch(exception &) \
    { \
    }

pair<string, vector< vector<string> > > msp(const string& s1)
{
    return std::make_pair(s1, vector< vector<string> >());
}


pair<string, vector< vector<string> > > msp(const string& s1, const string& s2)
{
    vector< vector<string> > v(1);
    v[0].push_back(s2);
    return std::make_pair(s1, v);
}

void check_value(const option& option, const char* name, const char* value)
{
    BOOST_CHECK(option.string_key == name);
    BOOST_REQUIRE(option.value.size() == 1);
    BOOST_CHECK(option.value.front() == value);
}

vector<string> sv(const char* array[], unsigned size)
{
    vector<string> r;
    for (unsigned i = 0; i < size; ++i)
        r.push_back(array[i]);
    return r;
}

pair<string, string> additional_parser(const std::string&)
{
    return pair<string, string>();
}

namespace command_line {

#if 0
// The following commented out blocks used to test parsing
// command line without syntax specification behaviour.
// It is disabled now and probably will never be enabled again:
// it is not possible to figure out what command line means without
// user's help.
void test_parsing_without_specifying_options() {
    char* cmdline1[] = { "--a", "--b=12", "-f", "-g4", "-", "file" };
    options_and_arguments a1 = parse_command_line(cmdline1,
            cmdline1 + sizeof(cmdline1) / sizeof(cmdline1[0]));
    BOOST_REQUIRE(a1.options().size() == 4);
    BOOST_CHECK(a1.options()[0] == msp("a", ""));
    BOOST_CHECK(a1.options()[1] == msp("b", "12"));
    BOOST_CHECK(a1.options()[2] == msp("-f", ""));
    BOOST_CHECK(a1.options()[3] == msp("-g", "4"));
    BOOST_REQUIRE(a1.arguments().size() == 2);
    BOOST_CHECK(a1.arguments()[0] == "-");
    BOOST_CHECK(a1.arguments()[1] == "file");
    char* cmdline2[] = { "--a", "--", "file" };
    options_and_arguments a2 = parse_command_line(cmdline2,
            cmdline2 + sizeof(cmdline2) / sizeof(cmdline2[0]));
    BOOST_REQUIRE(a2.options().size() == 1);
    BOOST_CHECK(a2.options()[0] == msp("a", ""));
    BOOST_CHECK(a2.arguments().size() == 1);
    BOOST_CHECK(a2.arguments()[0] == "file");
}
#endif

void test_many_different_options() {
    options_description desc;
    desc.add_options()
        ("foo,f", new untyped_value(), "")
        ( // Explicit qualification is a workaround for vc6
            "bar,b", po::value<std::string>(), "")
        ("car,voiture", new untyped_value())
        ("dog,dawg", new untyped_value())
        ("baz", new untyped_value())
        ("plug*", new untyped_value());
    const char* cmdline3_[] = { "--foo=12", "-f4", "--bar=11", "-b4",
            "--voiture=15", "--dawg=16", "--dog=17", "--plug3=10" };
    vector<string> cmdline3 = sv(cmdline3_,
            sizeof(cmdline3_) / sizeof(const char*));
    vector<option> a3 =
            command_line_parser(cmdline3).options(desc).run().options;
    BOOST_CHECK_EQUAL(a3.size(), 8u);
    check_value(a3[0], "foo", "12");
    check_value(a3[1], "foo", "4");
    check_value(a3[2], "bar", "11");
    check_value(a3[3], "bar", "4");
    check_value(a3[4], "car", "15");
    check_value(a3[5], "dog", "16");
    check_value(a3[6], "dog", "17");
    check_value(a3[7], "plug3", "10");

    // Regression test: check that '0' as style is interpreted as 
    // 'default_style'
    vector<option> a4 = parse_command_line(
            sizeof(cmdline3_) / sizeof(const char*), cmdline3_, desc, 0,
            additional_parser).options;
    // The default style is unix-style, where the first argument on the command-line
    // is the name of a binary, not an option value, so that should be ignored
    BOOST_CHECK_EQUAL(a4.size(), 7u);
    check_value(a4[0], "foo", "4");
    check_value(a4[1], "bar", "11");
    check_value(a4[2], "bar", "4");
    check_value(a4[3], "car", "15");
    check_value(a4[4], "dog", "16");
    check_value(a4[5], "dog", "17");
    check_value(a4[6], "plug3", "10");
}

void test_not_crashing_with_empty_string_values() {
    // Check that we don't crash on empty values of type 'string'
    const char* cmdline4[] = { "", "--open", "" };
    options_description desc2;
    desc2.add_options()("open", po::value<string>());
    variables_map vm;
    po::store(
            po::parse_command_line(sizeof(cmdline4) / sizeof(const char*),
                    const_cast<char**>(cmdline4), desc2), vm);
}

void test_multitoken() {
    const char* cmdline5[] = { "", "-p7", "-o", "1", "2", "3", "-x8" };
    options_description desc3;
    desc3.add_options()
        (",p", po::value<string>())
        (",o", po::value<string>()->multitoken())
        (",x", po::value<string>());
    vector<option> a5 = parse_command_line(
            sizeof(cmdline5) / sizeof(const char*),
            const_cast<char**>(cmdline5), desc3, 0, additional_parser).options;
    BOOST_CHECK_EQUAL(a5.size(), 3u);
    check_value(a5[0], "-p", "7");
    BOOST_REQUIRE(a5[1].value.size() == 3);
    BOOST_CHECK_EQUAL(a5[1].string_key, "-o");
    BOOST_CHECK_EQUAL(a5[1].value[0], "1");
    BOOST_CHECK_EQUAL(a5[1].value[1], "2");
    BOOST_CHECK_EQUAL(a5[1].value[2], "3");
    check_value(a5[2], "-x", "8");
}

void test_multitoken_and_multiname() {
    const char* cmdline[] = { "program", "-fone", "-b", "two", "--foo", "three", "four", "-zfive", "--fee", "six" };
    options_description desc;
    desc.add_options()
        ("bar,b", po::value<string>())
        ("foo,fee,f", po::value<string>()->multitoken())
        ("fizbaz,baz,z", po::value<string>());

    vector<option> parsed_options = parse_command_line(
            sizeof(cmdline) / sizeof(const char*),
            const_cast<char**>(cmdline), desc, 0, additional_parser).options;

    BOOST_CHECK_EQUAL(parsed_options.size(), 5u);
    check_value(parsed_options[0], "foo", "one");
    check_value(parsed_options[1], "bar", "two");
    BOOST_CHECK_EQUAL(parsed_options[2].string_key, "foo");
    BOOST_REQUIRE(parsed_options[2].value.size() == 2);
    BOOST_CHECK_EQUAL(parsed_options[2].value[0], "three");
    BOOST_CHECK_EQUAL(parsed_options[2].value[1], "four");
    check_value(parsed_options[3], "fizbaz", "five");
    check_value(parsed_options[4], "foo", "six");

    const char* cmdline_2[] = { "program", "-fone", "-b", "two", "--fee", "three", "four", "-zfive", "--foo", "six" };

    parsed_options = parse_command_line(
            sizeof(cmdline_2) / sizeof(const char*),
            const_cast<char**>(cmdline_2), desc, 0, additional_parser).options;

    BOOST_CHECK_EQUAL(parsed_options.size(), 5u);
    check_value(parsed_options[0], "foo", "one");
    check_value(parsed_options[1], "bar", "two");
    BOOST_CHECK_EQUAL(parsed_options[2].string_key, "foo");
    BOOST_REQUIRE(parsed_options[2].value.size() == 2);
    BOOST_CHECK_EQUAL(parsed_options[2].value[0], "three");
    BOOST_CHECK_EQUAL(parsed_options[2].value[1], "four");
    check_value(parsed_options[3], "fizbaz", "five");
    check_value(parsed_options[4], "foo", "six");
}


void test_multitoken_vector_option() {
    po::options_description desc4("");
    desc4.add_options()
        ("multitoken,multi-token,m", po::value<std::vector<std::string> >()->multitoken(), "values")
        ("file", po::value<std::string>(), "the file to process");
    po::positional_options_description p;
    p.add("file", 1);
    const char* cmdline6[] = { "", "-m", "token1", "token2", "--", "some_file" };
    vector<option> a6 =
            command_line_parser(sizeof(cmdline6) / sizeof(const char*),
                    const_cast<char**>(cmdline6)).options(desc4).positional(p).run().options;
    BOOST_CHECK_EQUAL(a6.size(), 2u);
    BOOST_REQUIRE(a6[0].value.size() == 2);
    BOOST_CHECK_EQUAL(a6[0].string_key, "multitoken");
    BOOST_CHECK_EQUAL(a6[0].value[0], "token1");
    BOOST_CHECK_EQUAL(a6[0].value[1], "token2");
    BOOST_CHECK_EQUAL(a6[1].string_key, "file");
    BOOST_REQUIRE(a6[1].value.size() == 1);
    BOOST_CHECK_EQUAL(a6[1].value[0], "some_file");
}

} // namespace command_line

void test_command_line()
{
    #if 0
    command_line::test_parsing_without_specifying_options();
    #endif
    command_line::test_many_different_options();
    // Check that we don't crash on empty values of type 'string'
    command_line::test_not_crashing_with_empty_string_values();
    command_line::test_multitoken();
    command_line::test_multitoken_vector_option();
    command_line::test_multitoken_and_multiname();
}

void test_config_file(const char* config_file)
{
    options_description desc;
    desc.add_options()
        ("gv1", new untyped_value)
        ("gv2", new untyped_value)
        ("empty_value", new untyped_value)
        ("plug*", new untyped_value)
        ("m1.v1", new untyped_value)
        ("m1.v2", new untyped_value)
        ("m1.v3,alias3", new untyped_value)
        ("b", bool_switch())
    ;

    const char content1[] =
    " gv1 = 0#asd\n"
    "empty_value = \n"
    "plug3 = 7\n"
    "b = true\n"
    "[m1]\n"
    "v1 = 1\n"
    "\n"
    "v2 = 2\n"    
    "v3 = 3\n"
    ;

    stringstream ss(content1);
    vector<option> a1 = parse_config_file(ss, desc).options;
    BOOST_REQUIRE(a1.size() == 7);
    check_value(a1[0], "gv1", "0");
    check_value(a1[1], "empty_value", "");
    check_value(a1[2], "plug3", "7");
    check_value(a1[3], "b", "true");
    check_value(a1[4], "m1.v1", "1");
    check_value(a1[5], "m1.v2", "2");
    check_value(a1[6], "m1.v3", "3");
    
    // same test, but now options come from file 
    vector<option> a2 = parse_config_file<char>(config_file, desc).options;
    BOOST_REQUIRE(a2.size() == 7);
    check_value(a2[0], "gv1", "0");
    check_value(a2[1], "empty_value", "");
    check_value(a2[2], "plug3", "7");
    check_value(a2[3], "b", "true");
    check_value(a2[4], "m1.v1", "1");
    check_value(a2[5], "m1.v2", "2");
    check_value(a2[6], "m1.v3", "3");
}

void test_environment()
{
    options_description desc;
    desc.add_options()
        ("foo", new untyped_value, "")
        ("bar", new untyped_value, "")
        ;

#if (defined(_WIN32) && ! defined(__BORLANDC__)) || (defined(__CYGWIN__))
    _putenv("PO_TEST_FOO=1");
#else
    putenv(const_cast<char*>("PO_TEST_FOO=1"));
#endif
    parsed_options p = parse_environment(desc, "PO_TEST_");

    BOOST_REQUIRE(p.options.size() == 1);
    BOOST_CHECK  (p.options[0].string_key == "foo");
    BOOST_REQUIRE(p.options[0].value.size() == 1);
    BOOST_CHECK  (p.options[0].value[0] == "1");

    //TODO: since 'bar' does not allow a value, it cannot appear in environemt,
    // which already has a value.
}

void test_unregistered()
{
    options_description desc;

    const char* cmdline1_[] = { "--foo=12", "--bar", "1"};
    vector<string> cmdline1 = sv(cmdline1_,
                                 sizeof(cmdline1_)/sizeof(const char*));
    vector<option> a1 = 
        command_line_parser(cmdline1).options(desc).allow_unregistered().run()
        .options;

    BOOST_REQUIRE(a1.size() == 3);
    BOOST_CHECK(a1[0].string_key == "foo");
    BOOST_CHECK(a1[0].unregistered == true);
    BOOST_REQUIRE(a1[0].value.size() == 1);
    BOOST_CHECK(a1[0].value[0] == "12");
    BOOST_CHECK(a1[1].string_key == "bar");
    BOOST_CHECK(a1[1].unregistered == true);
    BOOST_CHECK(a1[2].string_key == "");
    BOOST_CHECK(a1[2].unregistered == false);
    

    vector<string> a2 = collect_unrecognized(a1, include_positional);
    BOOST_CHECK(a2[0] == "--foo=12");
    BOOST_CHECK(a2[1] == "--bar");
    BOOST_CHECK(a2[2] == "1");

    // Test that storing unregisted options has no effect
    variables_map vm;
    
    store(command_line_parser(cmdline1).options(desc).
          allow_unregistered().run(),
          vm);

    BOOST_CHECK_EQUAL(vm.size(), 0u);   


    const char content1[] =
    "gv1 = 0\n"
    "[m1]\n"
    "v1 = 1\n"
    ;

    stringstream ss(content1);
    vector<option> a3 = parse_config_file(ss, desc, true).options;
    BOOST_REQUIRE(a3.size() == 2);
    cout << "XXX" << a3[0].value.front() << "\n";
    check_value(a3[0], "gv1", "0");
    check_value(a3[1], "m1.v1", "1");
}



int main(int, char* av[])
{
    test_command_line();
    test_config_file(av[1]);
    test_environment();
    test_unregistered();
    return 0;
}