1 files changed, 110 insertions, 0 deletions
diff --git a/memfile.c b/memfile.c
new file mode 100644
index 0000000..abbd673
--- /dev/null
+++ b/memfile.c
@@ -0,0 +1,110 @@
+/*
+ *  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;
+}