From 18bcf63ee9b8e2b3c7583157c8c3aedaaf75bc3f Mon Sep 17 00:00:00 2001
From: "Unknown W. Brackets" <checkins@unknownbrackets.org>
Date: Sun, 8 Dec 2013 11:05:36 -0800
Subject: [PATCH] Add a convenience helper to load a file oneshot.

---
 Core/FileSystems/MetaFileSystem.cpp | 17 +++++++++++++++++
 Core/FileSystems/MetaFileSystem.h   |  3 +++
 2 files changed, 20 insertions(+)

diff --git a/Core/FileSystems/MetaFileSystem.cpp b/Core/FileSystems/MetaFileSystem.cpp
index b0417ab6d8..937b1c7d72 100644
--- a/Core/FileSystems/MetaFileSystem.cpp
+++ b/Core/FileSystems/MetaFileSystem.cpp
@@ -517,6 +517,23 @@ size_t MetaFileSystem::SeekFile(u32 handle, s32 position, FileMove type)
 		return 0;
 }
 
+u32 MetaFileSystem::ReadEntireFile(const std::string &filename, std::string &data) {
+	int error = 0;
+	u32 handle = pspFileSystem.OpenWithError(error, filename, FILEACCESS_READ);
+	if (handle == 0)
+		return error;
+
+	size_t dataSize = (size_t)pspFileSystem.GetFileInfo(filename).size;
+	data.resize(dataSize);
+
+	size_t result = pspFileSystem.ReadFile(handle, (u8 *)&data[0], dataSize);
+	pspFileSystem.CloseFile(handle);
+
+	if (result != dataSize)
+		return SCE_KERNEL_ERROR_ERROR;
+	return 0;
+}
+
 void MetaFileSystem::DoState(PointerWrap &p)
 {
 	lock_guard guard(lock);
diff --git a/Core/FileSystems/MetaFileSystem.h b/Core/FileSystems/MetaFileSystem.h
index 130644e58f..e64b47fe5b 100644
--- a/Core/FileSystems/MetaFileSystem.h
+++ b/Core/FileSystems/MetaFileSystem.h
@@ -105,6 +105,9 @@ public:
 
 	// TODO: void IoCtl(...)
 
+	// Convenience helper - returns < 0 on failure.
+	u32 ReadEntireFile(const std::string &filename, std::string &data);
+
 	void SetStartingDirectory(const std::string &dir) {
 		lock_guard guard(lock);
 		startingDirectory = dir;