libdata

/*
  Copyright (c) 2008, 2009, 2010 Joseph Sabey

  Permission is hereby granted, free of charge, to any person
  obtaining a copy of this software and associated documentation
  files (the "Software"), to deal in the Software without
  restriction, including without limitation the rights to use,
  copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the
  Software is furnished to do so, subject to the following
  conditions:

  The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  OTHER DEALINGS IN THE SOFTWARE.
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "libdata.h"

DP data_add(DP *first, char *type)
{
    if(type == NULL || strlen(type) < 1)
        return NULL;
    DP *current = first;
    while(*current != NULL)
    {
        current = &((*current)->next);
    }
    *current = malloc(sizeof(struct data));
    if(*current == NULL)
        return NULL;
    (*current)->type = malloc(strlen(type)+1);
    if((*current)->type == NULL)
        return NULL;
    strcpy((*current)->type, type);
    (*current)->data = NULL;
    (*current)->next = NULL;
    (*current)->dispose = NULL;
    return *current;
}

DP data_add_unique(DP *first, char *type)
{
    DP *current = first;
    while(*current != NULL)
    {
        if(strcmp((*current)->type, type) == 0)
            return NULL;
        current = &((*current)->next);
    }
    *current = malloc(sizeof(struct data));
    if(*current == NULL)
        return NULL;
    (*current)->type = malloc(strlen(type)+1);
    if((*current)->type == NULL)
        return NULL;
    strcpy((*current)->type, type);
    (*current)->data = NULL;
    (*current)->next = NULL;
    (*current)->dispose = NULL;
    return *current;
}

DP data_add_string(DP *first, char *type, char *data)
{
    DP new = NULL;
    new = data_add(first, type);
    if(new == NULL)
        return NULL;
    new->data = malloc(strlen(data)+1);
    if(new->data == NULL)
        return NULL;
    strcpy((char*)new->data, data);
    return new;
}

DP data_add_string_unique(DP *first, char *type, char *data)
{
    DP new = NULL;
    new = data_add_unique(first, type);
    if(new == NULL)
        return NULL;
    new->data = malloc(strlen(data)+1);
    if(new->data == NULL)
        return NULL;
    strcpy(new->data, data);
    return new;
}

DP data_add_int(DP *first, char *type, int data)
{
    DP new = NULL;
    new = data_add(first, type);
    if(new == NULL)
        return NULL;
    new->data = malloc(sizeof(int));
    if(new->data == NULL)
        return NULL;
    *((int*)new->data) = data;
    return new;
}

DP data_add_int_unique(DP *first, char *type, int data)
{
    DP new = NULL;
    new = data_add_unique(first, type);
    if(new == NULL)
        return NULL;
    new->data = malloc(sizeof(int));
    if(new->data == NULL)
        return NULL;
    *((int*)new->data) = data;
    return new;
}

int data_splice(DP *source, DP *target, int offset)
{
    DP buffer = NULL;
    buffer = *source;
    DP current = buffer;
    int x = 0;
    while(x < offset)
    {
        current = current->next;
        x++;
    }
    *source = current->next;
    current->next = *target;
    *target = buffer;
    return 0;
}

int data_splice_type(DP *source, DP *target, char *type)
{
    DP *buffer = NULL;
    while(1)
    {
        buffer = data_get_type(source, type, 0);
        if(buffer == NULL)
            return 0;
        data_splice(buffer, target, 0);
    }
}

int data_count_type(DP first, char *type)
{
    int count = 0;
    DP current = first;
    while(current != NULL)
    {
        if(strcmp(current->type, type) == 0)
            count++;
        current = current->next;
    }
    return count;
}

int data_count_all(DP first)
{
    int count = 0;
    DP current = first;
    while(current != NULL)
    {
        count++;
        current = current->next;
    }
    return count;
}

DP *data_get_type(DP *first, char *type, int offset)
{
    int count = 0;
    DP *current = first;
    while(*current != NULL)
    {
        if(strcmp((*current)->type, type) == 0)
            if(count == offset)
            {
                return current;
            }
            else
            {
                count++;
            }
        current = &((*current)->next);
    }
    return NULL;
}

int data_sort_insertion(DP *first, int(*compare)(DP first, DP second))
{
    if(first == NULL)
        return 1;
    if(*first == NULL)
        return 2;
    if(compare == NULL)
        return 3;
    int position = -1;
    while(1)
    {
        if(position == -1)
        {
            DP *current = first;
            DP *next = &((*first)->next);
            while(1)
            {
                int swap = compare(*current, *next);
                if(swap > 0)
                    return 4;
                if(swap == -1)
                {
                    DP buffer = *current;
                    *current = (*current)->next;
                    buffer->next = (buffer->next)->next;
                    (*current)->next = buffer;
                    break;
                }
                current = next;
                next = &((*next)->next);
                if(*next == NULL)
                    return 0;
                position++;
            }
        }
        else
        {
            while(position > -1)
            {
                DP *current = first;
                DP *next = &((*first)->next);
                int x = 0;
                while(x < position)
                {
                    current = next;
                    next = &((*next)->next);
                    x++;
                }
                if(compare(*current, *next) == -1)
                {
                    DP buffer = *current;
                    *current = (*current)->next;
                    buffer->next = (buffer->next)->next;
                    (*current)->next = buffer;
                    position--;
                }
                else
                    position = -1;
            }
        }
    }
    return 0;
}

int data_compare_data_int_low(DP first, DP second)
{
    if(first == NULL || second == NULL)
        return 1;
    if(first->data == NULL || second->data == NULL)
        return 2;
    if((*((int*)first->data)) <= (*((int*)second->data)))
        return 0;
    else
        return -1;
}

int data_remove(DP *first, char *type, int offset)
{
    if(type == NULL || strlen(type) < 1)
        return 1;
    if(offset < 0)
        return 2;
    int count = 0;
    DP *current = first;
    DP *previous = current;
    while(*current != NULL)
    {
        if(strcmp((*current)->type, type) == 0)
        {
            if(count == offset)
            {
                DP next = (*current)->next;
                (*current)->dispose(*current);
                free(*current);
                (*previous)->next = next;
                return 0;
            }
            count++;
        }
        previous = current;
        current = &((*current)->next);
    }
    return 3;
}

int data_dispose(DP data)
{
    //if(data != NULL)
    //  printf("Disposing: %s | ", (char*)data->type);
    if(data == NULL)
        return 0;
    if(data->next != NULL)
        data_dispose(data->next);
    free(data->type);
    if(data->dispose != NULL)
        data->dispose(data);
    else
        free(data->data);
    free(data);
    return 0;
}

int data_dispose_data(DP data)
{
    data_dispose((DP)data->data);
    return 0;
}