JGE/src/JFileSystem.cpp

@@ -0,0 +1,195 @@
+//-------------------------------------------------------------------------------------
+//
+// JGE++ is a hardware accelerated 2D game SDK for PSP/Windows.
+//
+// Licensed under the BSD license, see LICENSE in JGE root for details.
+// 
+// Copyright (c) 2007 James Hui (a.k.a. Dr.Watson) <jhkhui@gmail.com>
+// 
+//-------------------------------------------------------------------------------------
+
+#pragma warning(disable : 4786)
+
+#include "../include/JGE.h"
+#include "../include/JFileSystem.h"
+#include "tinyxml/tinyxml.h"
+#include "unzip/unzip.h"
+
+
+#include <stdio.h>
+#include <vector>
+#include <map>
+#include <string>
+
+JFileSystem* JFileSystem::mInstance = NULL;
+
+JFileSystem* JFileSystem::GetInstance()
+{
+	if (mInstance == NULL)
+	{
+		mInstance = new JFileSystem();
+	}
+
+	return mInstance;
+}
+
+
+void JFileSystem::Destroy()
+{
+	if (mInstance)
+	{
+		delete mInstance;
+		mInstance = NULL;
+	}
+}
+
+
+JFileSystem::JFileSystem()
+{
+	mZipAvailable = false;
+#ifdef WIN32
+	mFile = NULL;
+#else
+	mFile = -1;
+#endif
+	mPassword = NULL;
+	mZipFile = NULL;
+	mFileSize = 0;
+
+	mResourceRoot = "Res/";				// default root folder 
+}
+
+
+JFileSystem::~JFileSystem()
+{
+	if (mZipAvailable && mZipFile != NULL)
+		unzCloseCurrentFile(mZipFile);
+}
+
+
+bool JFileSystem::AttachZipFile(const string &zipfile, char *password /* = NULL */)
+{
+	if (mZipAvailable && mZipFile != NULL)
+	{
+		if (mZipFileName != zipfile)
+			unzCloseCurrentFile(mZipFile);		// close the previous zip file
+	}
+	
+	mZipFileName = zipfile;
+	mPassword = password;
+
+	mZipFile = unzOpen(mZipFileName.c_str());
+
+	if (mZipFile != NULL)
+	{
+		mZipAvailable = true;
+		return true;
+	}
+
+	return false;
+}
+
+
+void JFileSystem::DetachZipFile()
+{
+	if (mZipAvailable && mZipFile != NULL)
+	{
+		unzCloseCurrentFile(mZipFile);
+	}
+	
+	mZipFile = NULL;
+	mZipAvailable = false;
+}
+
+
+bool JFileSystem::OpenFile(const string &filename)
+{
+
+	string path = mResourceRoot + filename;
+
+	if (mZipAvailable && mZipFile != NULL)
+	{
+		if (unzLocateFile(mZipFile, path.c_str(), 0) != UNZ_OK)
+			return false;
+
+		char filenameInzip[256];
+		unz_file_info fileInfo;
+
+		if (unzGetCurrentFileInfo(mZipFile, &fileInfo, filenameInzip, sizeof(filenameInzip), NULL, 0, NULL, 0) == UNZ_OK)
+			mFileSize = fileInfo.uncompressed_size;
+		else
+			mFileSize = 0;
+		
+		return (unzOpenCurrentFilePassword(mZipFile, mPassword) == UNZ_OK);
+	}
+	else
+	{
+		#ifdef WIN32
+			mFile = fopen(path.c_str(), "rb");
+			if (mFile != NULL)
+			{
+				fseek(mFile, 0, SEEK_END);
+				mFileSize = ftell(mFile);
+				fseek(mFile, 0, SEEK_SET);
+				return true;
+			}
+		#else
+			mFile = sceIoOpen(path.c_str(), PSP_O_RDONLY, 0777);
+			if (mFile > 0)
+			{
+				mFileSize = sceIoLseek(mFile, 0, PSP_SEEK_END);
+				sceIoLseek(mFile, 0, PSP_SEEK_SET);
+				return true;
+			}
+		#endif		
+		
+			
+	}
+	
+	return false;
+			
+}
+
+
+void JFileSystem::CloseFile()
+{
+	if (mZipAvailable && mZipFile != NULL)
+		return;
+
+	#ifdef WIN32
+		if (mFile != NULL)
+			fclose(mFile);
+	#else
+		if (mFile > 0)
+			sceIoClose(mFile);
+	#endif
+}
+
+
+int JFileSystem::ReadFile(void *buffer, int size)
+{
+	if (mZipAvailable && mZipFile != NULL)
+	{
+		return unzReadCurrentFile(mZipFile, buffer, size);
+	}
+	else
+	{
+		#ifdef WIN32
+			return fread(buffer, 1, size, mFile);
+		#else
+			return sceIoRead(mFile, buffer, size);
+		#endif
+	}
+}
+
+
+int JFileSystem::GetFileSize()
+{
+	return mFileSize;
+}
+
+
+void JFileSystem::SetResourceRoot(const string& resourceRoot)
+{
+	mResourceRoot = resourceRoot;
+}