main.c

This is a safe double linked list data structure in order to store data on void* pointer for data se

#include <stdio.h>
#include <stdlib.h>
#include "circular_dlist.h"
#define LINE_LENGTH 64

int m;

int main(int argc, char** argv)
{
    FILE *fp = NULL;
    char line[LINE_LENGTH], event;
    int id, type;
    CreateNew_dl(-1,5);
    /* Check command line arguments */
    if( argc < 3 )
    {
        printf("\n Usage: %s <m> <input-file>\n", argv[0]);
        return(EXIT_FAILURE);
    }

    /* Read the m parameter */
    m = atoi(argv[1]);

    /* Open input file */
    if( ( fp = fopen(argv[2], "r") ) == NULL )
    {
        printf("\n Could not open file: %s\n", argv[2]);
        return(EXIT_FAILURE);
    }

    /* Read input file line-by-line and handle the events */
    while( fgets(line, LINE_LENGTH, fp) != NULL )
    {

        /* Uncomment the line below when in debug mode */
        /* printf("\n Event: %s ", line); */

        switch(line[0])
        {
            /* Join event */
            case 'J':
                sscanf(line, "%c %d", &event, &id);
                /* id: the id of the node to be inserted */
                Insert_dl(id);
                /* your code... */
                break;

            /* Leave event */
            case 'L':
                sscanf(line, "%c %d", &event, &id);
                /* id: the id of the node to be deleted  */
		Delete_dl(id);
                /* your code... */
                break;

            /* Insert event */
            case 'I':
                sscanf(line, "%c %d %d", &event, &id, &type);
                /* id: the id of the file, type: the type of the file to be inserted */
		Insert_File(id,type);
                /* your code... */
                break;

            /* Delete event */
            case 'D':
                sscanf(line, "%c %d", &event, &id);
                /* id: the id of the file, to be deleted */
		Delete_File(id);
                /* your code... */
                break;

            /* Find event */
            case 'F':
                sscanf(line, "%c %d", &event, &id);
                /* id: the id of the file, to be searched for */
		Find_File(id);
                /* your code... */
                break;

            /* Print event */
            case 'P':
                sscanf(line, "%c", &event);
		print_dl();
                /* your code... */
                break;

            /* Ignore everything else */
            default:
                /* Uncomment the line below when in debug mode */
//                 printf("\n Ignoring line: %s", line);

                break;
        }
    }

    return (EXIT_SUCCESS);
}