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/*
* memfile.c
* 0CFMaker
*
* Created by Alex Marshall on 09/02/08.
* Copyright 2009 __MyCompanyName__. All rights reserved.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "types.h"
#include "memfile.h"
void ReadMemory(void* dst, size_t size, size_t count, MEMORY* src)
{
if((src->mode & 0x1) == 0) {
printf("Invalid mode for reading!\n");
return;
}
u8* data = (u8*)dst;
if(((size * count) + src->position) > src->memorysize) {
printf("Tried to over read.\n");
return;
}
memcpy(data, ((u8*)src->memory) + src->position, size * count);
src->position += size * count;
}
char ReadMemoryChar(MEMORY* src)
{
char ret;
ReadMemory(&ret, 1, 1, src);
return ret;
}
void WriteMemory(void* dst, size_t size, size_t count, MEMORY* src)
{
if((src->mode & 0x2) == 0) {
printf("Invalid mode for writing!\n");
return;
}
u8* data = (u8*)dst;
if(((size * count) + src->position) > src->memorysize) {
printf("Tried to over read.\n");
return;
}
memcpy(((u8*)src->memory) + src->position, data, size * count);
src->position += size * count;
}
void WriteMemoryChar(char inchar, MEMORY* src)
{
WriteMemory(&inchar, 1, 1, src);
}
MEMORY* OpenMemory(void* indata, size_t size, char mode)
{
MEMORY* mem = malloc(sizeof(MEMORY));
if((mode & 0x2) == 0x0)
mem->memory = indata;
else
mem->memory = calloc(size, 1);
if(mem->memory == NULL)
return NULL;
mem->memorysize = size;
mem->position = 0;
mem->mode = mode;
return mem;
}
void* CloseMemory(MEMORY* mem)
{
void* ret = mem->memory;
mem->memory = NULL;
mem->memorysize = 0;
mem->position = 0;
mem->mode = 0;
free(mem);
return ret;
}
void* GetMemory(MEMORY* mem)
{
return mem->memory;
}
void SeekMemory(MEMORY* mem, size_t location, int type)
{
switch(type) {
case SEEK_SET:
mem->position = location;
break;
case SEEK_END:
mem->position = mem->memorysize - location;
break;
}
}
size_t TellMemory(MEMORY* mem)
{
return mem->position;
}
size_t SizeMemory(MEMORY* mem)
{
return mem->memorysize;
}
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