From 9b5904c9627d75e5d7962dabea60d30c5a457038 Mon Sep 17 00:00:00 2001
From: Benjamyn Love <benjamyn.love@gmail.com>
Date: Tue, 5 Dec 2023 10:15:16 +1100
Subject: [PATCH] Added in fileloader library

---
 libs/fileLoader.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++
 libs/fileLoader.h |  5 +++++
 2 files changed, 59 insertions(+)
 create mode 100644 libs/fileLoader.c
 create mode 100644 libs/fileLoader.h

diff --git a/libs/fileLoader.c b/libs/fileLoader.c
new file mode 100644
index 0000000..acaf829
--- /dev/null
+++ b/libs/fileLoader.c
@@ -0,0 +1,54 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include "fileLoader.h"
+
+char *load_file_to_mem(char *filename) {
+	int fd = open(filename, O_RDONLY);
+
+	if (fd < 0) {
+	    printf("\n\"%s \" could not open", filename);
+	    exit(1);
+	}
+
+	struct stat statbuf;
+	int err = fstat(fd, &statbuf);
+	if (err < 0) {
+	    printf("\n\"%s \" could not open", filename);
+	    exit(2);
+	}
+
+	char *filecontents = mmap(NULL, statbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+	if (filecontents == MAP_FAILED) {
+	    printf("Mapping failed");
+	    exit(3);
+	}
+
+	
+	return filecontents;
+}
+
+int unmap_file(char *ptr, char *filename) {
+	int fd = open(filename, O_RDONLY);
+
+        if (fd < 0) {
+            printf("\n\"%s \" could not open", filename);
+            exit(1);
+        }
+
+        struct stat statbuf;
+        int err = fstat(fd, &statbuf); 
+	err = munmap(ptr, statbuf.st_size);
+        if (err != 0)
+        {
+                printf("Unmapping failed");
+                return 1;
+	}
+	return 0;	
+}
diff --git a/libs/fileLoader.h b/libs/fileLoader.h
new file mode 100644
index 0000000..8eba000
--- /dev/null
+++ b/libs/fileLoader.h
@@ -0,0 +1,5 @@
+#ifndef HEADER_FILE
+#define HEADER_FILE
+char *load_file_to_mem(char *filename);
+int unmap_file(char *ptr, char *filename);
+#endif