server-client-network/Stream.c

#include "Stream.h"

int streamGetChar(char* c, Stream* in)
{
    if(in->index < in->size)
    {
        *c = in->data[in->index];
        in->index++;
        return 0;
    }
    return -1;
}

int streamGetShort(short* s, Stream* in)
{
    if(in->index + 1 < in->size)
    {
        *s = (in->data[in->index] & 0xFF) | ((in->data[in->index + 1] & 0xFF) << 8);
        in->index += 2;
        return 0;
    }
    return -1;
}

int streamGetInt(int* i, Stream* in)
{
    if(in->index + 3 < in->size)
    {
        *i = (in->data[in->index] & 0xFF) | ((in->data[in->index + 1] & 0xFF) << 8) | 
                ((in->data[in->index + 2] & 0xFF) << 16) | ((in->data[in->index + 3] & 0xFF) << 24);
        in->index += 4;
        return 0;
    }
    return -1;
}

int streamWriteChar(char c, Stream* in)
{
    if(in->index < in->size)
    {
        in->data[in->index] = c;
        in->index++;
        return 0;
    }
    return -1;
}

int streamWriteShort(short s, Stream* in)
{
    if(in->index + 1 < in->size)
    {
        in->data[in->index] = s & 0xFF;
        in->data[in->index + 1] = (s >> 8) & 0xFF;
        in->index += 2;
        return 0;
    }
    return -1;
}

int streamWriteInt(int i, Stream* in)
{
    if(in->index + 3 < in->size)
    {
        in->data[in->index] = i & 0xFF;
        in->data[in->index + 1] = (i >> 8) & 0xFF;
        in->data[in->index + 2] = (i >> 16) & 0xFF;
        in->data[in->index + 3] = (i >> 24) & 0xFF;
        in->index += 4;
        return 0;
    }
    return -1;
}