save_database.c

#include "inverted.h"

// function to save the contents
int save_database(c_db *hash_t)
{
    char file[20];
    char choice;
    // read the backup file from user
    printf("Enter the file name : ");
    scanf("%s", file);
    FILE *fptr = fopen(file, "w");    // open the file
    if (fptr != NULL)
    {
        // move the pointer
        fseek(fptr, 0, SEEK_END);
        if (fptr != 0)
        {
            printf("Can i overwrite the content (y/n) : ");
            scanf(" %c", &choice);
            if (choice == 'n')
            {
                return -1;
            }
        }
    }
    for (int key = 0; key < 27; key++)
    {
        m_node *temp = hash_t[key].m_link;
        if (temp == NULL)
            continue;
        // iterate till temp not equals null and save the database
        while (temp != NULL)
        {
            fprintf(fptr, "%s", "#");
            fprintf(fptr, "%d;", key);
            fprintf(fptr, "%s;", temp->word);
            fprintf(fptr, "%d;", temp->file_count);
            s_node *stemp = temp->m_sub_link;
            while (stemp != NULL)
            {
                fprintf(fptr, "%s;", stemp->file_name);
                fprintf(fptr, "%d;", stemp->word_count);
                stemp = stemp->s_sub_link;
            }

            temp = temp->m_main_link;
            fprintf(fptr, "%s", "#");
            fprintf(fptr, "%s", "\n");
        }
    }
    fclose(fptr);
    return 1;
}