From 4279dc28279d930e1c9eebfb4541126eb563934e Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Thu, 28 Apr 2022 23:20:22 -0400
Subject: [PATCH] Add memory buffer read/write functions

---
 include/memorybuffer.h |  6 +++---
 src/memorybuffer.cpp   | 29 +++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 3 deletions(-)
 create mode 100644 src/memorybuffer.cpp

diff --git a/include/memorybuffer.h b/include/memorybuffer.h
index 7232020..d2f1c87 100644
--- a/include/memorybuffer.h
+++ b/include/memorybuffer.h
@@ -5,6 +5,7 @@
 #include <istream>
 #include <memory>
 #include <cstring>
+#include <vector>
 
 enum class Seek {
     Current,
@@ -41,8 +42,6 @@ struct MemoryBuffer {
         position = end;
     }
 
-
-
     size_t size() const {
         return data.size();
     }
@@ -142,4 +141,5 @@ private:
     size_t position = 0;
 };
 
-void write_buffer_to_file(const MemoryBuffer& buffer, std::string_view path);
\ No newline at end of file
+void write_buffer_to_file(const MemoryBuffer& buffer, std::string_view path);
+MemoryBuffer read_file_to_buffer(std::string_view path);
\ No newline at end of file
diff --git a/src/memorybuffer.cpp b/src/memorybuffer.cpp
new file mode 100644
index 0000000..b5be709
--- /dev/null
+++ b/src/memorybuffer.cpp
@@ -0,0 +1,29 @@
+#include "memorybuffer.h"
+
+void write_buffer_to_file(const MemoryBuffer& buffer, std::string_view path) {
+    FILE* file = fopen(path.data(), "wb");
+    if(file == nullptr)
+        throw std::runtime_error("Failed to open file for writing.");
+
+    fwrite(buffer.data.data(), buffer.data.size(), 1, file);
+
+    fclose(file);
+}
+
+MemoryBuffer read_file_to_buffer(std::string_view path) {
+    FILE* file = fopen(path.data(), "rb");
+    if(file == nullptr)
+        throw std::runtime_error("Failed to open file for reading.");
+
+    fseek(file, 0, SEEK_END);
+    size_t size = ftell(file);
+    fseek(file, 0, SEEK_SET);
+
+    MemoryBuffer buffer;
+    buffer.data.resize(size);
+    fread(buffer.data.data(), size, 1, file);
+
+    fclose(file);
+
+    return buffer;
+}
\ No newline at end of file