CMake build system, big pile of libs: bspatch, quazip, java, the launcher

java/javautils.cpp

@@ -0,0 +1,69 @@
+#include "multimc_pragma.h"
+#include "classfile.h"
+#include "javautils.h"
+//#include <wx/zipstrm.h>
+#include <memory>
+//#include <wx/wfstream.h>
+//#include "mcversionlist.h"
+
+namespace javautils
+{
+QString GetMinecraftJarVersion(QString jar)
+{
+	return "Unknown";
+	/*
+	wxString fullpath = jar.GetFullPath();
+	wxString version = MCVer_Unknown;
+	if(!jar.FileExists())
+		return version;
+	std::auto_ptr<wxZipEntry> entry;
+	// convert the local name we are looking for into the internal format
+	wxString name = wxZipEntry::GetInternalName("net/minecraft/client/Minecraft.class",wxPATH_UNIX);
+
+	// open the zip
+	wxFFileInputStream inStream(jar.GetFullPath());
+	wxZipInputStream zipIn(inStream);
+
+	// call GetNextEntry() until the required internal name is found
+	do
+	{
+		entry.reset(zipIn.GetNextEntry());
+	}
+	while (entry.get() != NULL && entry->GetInternalName() != name);
+	auto myentry = entry.get();
+	if (myentry == NULL)
+		return version;
+	
+	// we got the entry, read the data
+	std::size_t size = myentry->GetSize();
+	char *classdata = new char[size];
+	zipIn.Read(classdata,size);
+	try
+	{
+		char * temp = classdata;
+		java::classfile Minecraft_jar(temp,size);
+		auto cnst = Minecraft_jar.constants;
+		auto iter = cnst.begin();
+		while (iter != cnst.end())
+		{
+			const java::constant & constant = *iter;
+			if(constant.type != java::constant::j_string_data)
+			{
+				iter++;
+				continue;
+			}
+			auto & str = constant.str_data;
+			const char * lookfor = "Minecraft Minecraft "; // length = 20
+			if(str.compare(0,20,lookfor) == 0)
+			{
+				version = str.substr(20).data();
+				break;
+			}
+			iter++;
+		}
+	} catch(java::classfile_exception &){}
+	delete[] classdata;
+	return version;
+	*/
+}
+}