/*
VIM: let b:lcppflags="-std=c++14 -O2 -pthread -I."
VIM: let b:wcppflags="/O2 /EHsc /DWIN32"
VIM-: let b:cppflags=g:Iboost.g:Itbb
VIM-: let b:ldflags=g:Lboost.g:Ltbb
VIM-: let b:ldlibpath=g:Bboost.g:Btbb
VIM-: let b:argv=""
*/
#include <iostream>
#include <exception>
#include <chrono>
#include <string>

/*
Simple wildcard match.

*/

bool wildcard_match(const std::string& input, const std::string& pattern)
{
    int j = 0;
    int i = 0;
    int restart_idx = -1;
    while ( i < input.size() )
    {
        while ( j < pattern.size() && pattern[j] == '*' ){
            restart_idx = ++j;
        }
        if ( j<pattern.size() && pattern[j] == input[i] ) {
            ++i;
            ++j;
        }
        else if ( j>= 0 && pattern[j-1] == '*' ) {
            ++i;
        }
        else if ( restart_idx > 0 ) {
            i -= j - restart_idx -1;
            j = restart_idx;
        }
        else {
            return false;
        }
    }
    while ( j < pattern.size() && pattern[j] == '*' ){
        ++j;
    }
    return j == pattern.size();
}

void test(const std::string& input, const std::string& pattern)
{
    std::cout << input << " x " << pattern 
            << " == " << wildcard_match(input,pattern)
            << std::endl;
}


int main ( void )
{try{
    auto begin = std::chrono::high_resolution_clock::now();

    test("zebra", "dog");
    test("zebra", "zebra");
    test("zebra", "*br*");
    test("zebra", "*bi*");
    test("zebra", "*br*a");
    test("zebra", "*br*b");
    test("zebra", "z**a");
    test("zebra", "z*a");
    test("zebra", "x**a");
    test("zebrabrb", "*brb*");
    test("zebra", "*bra*");
    test("zebrazebrazebra", "*bra*zeb*zeb*");
    test("zebrbzebrazebra", "*bra*zeb*zeb*");
    test("zebrbzebrazebra", "*bra*zeb*");

    auto end = std::chrono::high_resolution_clock::now();
    std::chrono::duration<double> seconds = end - begin;
    std::cout << "Time: " << seconds.count() << std::endl;
    return 0;
}
catch ( const std::exception& e )
{
    std::cerr << std::endl
            << "std::exception(\"" << e.what() << "\")." << std::endl;
    return 2;
}
catch ( ... )
{
    std::cerr  << std::endl
            << "unknown exception." << std::endl;
    return 1;
}}