#include "xslaves.h"

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


XSlaveInfo new_slave_info()
{
    XSlaveInfo si;
    si.name = NULL;
    si.dev_node = NULL;
    return si;
}

void free_slave_info(XSlaveInfo si)
{
    free(si.name);
    free(si.dev_node);
    si.name = NULL;
    si.dev_node = NULL;
}

XSlaves* new_xslaves(size_t capacity)
{
    XSlaves* s = (XSlaves*)malloc(sizeof(XSlaves));
    s->capacity = capacity;
    s->length = 0;
    s->slaves = (XSlaveInfo*)malloc(capacity*sizeof(XSlaveInfo));
    return s;
}

void free_xslaves(XSlaves* slaves)
{
    for (int i = 0; i < slaves->length; i++)
        free_slave_info(slaves->slaves[i]);
    free(slaves->slaves);
    slaves->slaves = NULL;
    slaves->length = 0;
    slaves->capacity = 0;
    free(slaves);
}

int add_slaveinfo(XSlaves* slaves, char* name, char* dev_node)
{
    XSlaveInfo si = new_slave_info();
    si.name = strdup(name);
    si.dev_node = strdup(dev_node);
    if (si.name == NULL || si.dev_node == NULL)
    {
        free(si.name);
        free(si.dev_node);
        return MALLOCFAIL;
    }

    if (slaves->length < slaves->capacity)
    {
        slaves->slaves[slaves->length] = si;
        slaves->length++;
        return 0;
    }
    return XSLAVESFULL;
}