colorize.cpp

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>

#include <vector>
#include <string>

#define MAXMSG 512

#define COLOR_GREEN    "\x1B[32m"
#define COLOR_RESET    "\033[0m"

typedef std::vector<std::string> MyArray;

char* change_color(char* str, ...)
{
    static char output[MAXMSG];
    char string[MAXMSG];

    va_list args;
    va_start(args, str);
    vsprintf(string, str, args);
    va_end(args);

    sprintf(output, "%s%s%s", COLOR_GREEN, string, COLOR_RESET);

    return output;
}

void search_in_array(MyArray& pArray, const char *key)
{
    int i, n = pArray.size();
    bool bFound = false;

    for (i = 0; i < n; i++)
    {
        if (strstr(pArray[i].c_str(), key) != NULL)
        {
            printf("String found: %s\n", pArray[i].c_str());
            char *colored = change_color("%s", pArray[i].c_str());
            printf("Changed color: %s\n", colored);
            bFound = true;
        }
    }

    if (!bFound) printf("Can not find string with given key: %s\n", key);
}

int main(int argc, char *argv[])
{
    MyArray sArray;
    sArray.clear();

    if (argc < 2)
    {
        printf("Usage: %s [name]\n", argv[0]);
        printf("Example: %s lectus\n", argv[0]);
        exit(EXIT_FAILURE);
    }

    sArray.push_back("lorem ipsum dolor sit amet");
    sArray.push_back("consectetur adipiscing elit");
    sArray.push_back("donec a diam lectus");
    sArray.push_back("sed sit amet ipsum mauris");

    search_in_array(sArray, argv[1]);

    return 0;
}