From 989803e96a7b2d3a3b454f3de06cbc2d33545394 Mon Sep 17 00:00:00 2001
From: Martin Panter <vadmium à gmail·com>
Date: Sat, 14 Jul 2012 22:23:43 +1000
Subject: [PATCH] Support for 64-bit unpacked data size per volume

---
 src/fileblock.cc | 23 +++++++++++++----------
 src/fileblock.h  |  6 ++++--
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/src/fileblock.cc b/src/fileblock.cc
index 7aa2907..5d11ef9 100644
--- a/src/fileblock.cc
+++ b/src/fileblock.cc
@@ -52,7 +52,8 @@ time_t date_dos2unix(unsigned short time,unsigned short date)
 }
 
 FileBlock::FileBlock(std::istream &in) : RARBlock(in),
-in(in)
+in(in),
+size(RARBlock::size)
 {
 	in.seekg(start + 20);
 	unsigned short time;
@@ -82,12 +83,8 @@ in(in)
 		high_pack_size |= in.get() << 8;
 		high_pack_size |= in.get() << 16;
 		high_pack_size |= in.get() << 24;
-		if( high_pack_size )
-		{
-			std::cerr << "Packed file size >= 4 GiB not "
-				"implemented" << std::endl;
-			std::abort();
-		}
+		size |= static_cast <unsigned long long>(high_pack_size) <<
+			32;
 		in.seekg(4, std::ios::cur);
 	}
 
@@ -163,6 +160,12 @@ FileBlock::~FileBlock()
 	
 }
 
+std::streamoff
+FileBlock::GetEndPos()
+{
+	return start + headsize + size;
+}
+
 bool
 FileBlock::isFolder()
 {
@@ -175,7 +178,7 @@ FileBlock::isCompressed()
 	return compressed;
 }
 
-unsigned int
+unsigned long long
 FileBlock::GetDataSize()
 {
 	return size;
@@ -188,11 +191,11 @@ FileBlock::GetFileName()
 }
 
 int
-FileBlock::GetData(char *buf, unsigned int offset, unsigned int len)
+FileBlock::GetData(char *buf, std::streamoff offset, unsigned int len)
 {
 	std::streampos old = in.tellg();
 
-	in.seekg(start + headsize + offset);
+	in.seekg(start + std::streamoff(headsize) + offset);
 	
 	if ( offset > size || !len) 
 		return 0;
diff --git a/src/fileblock.h b/src/fileblock.h
index 8e21c3b..73c8cca 100644
--- a/src/fileblock.h
+++ b/src/fileblock.h
@@ -35,16 +35,18 @@ class FileBlock : public RARBlock
 	public:
 		FileBlock(std::istream &in);
 		 ~FileBlock();
+		virtual std::streamoff GetEndPos();
 	
 		std::string GetFileName();
 		void GetFileDate(struct timespec* tp);
-		unsigned int GetDataSize();
-		int GetData(char *buf, unsigned int offset, unsigned int len);
+		unsigned long long GetDataSize();
+		int GetData(char *buf, std::streamoff offset, unsigned int len);
 		bool isFolder();
 		bool isCompressed();
 	protected:
 		std::string filename;
 		std::istream &in;
+		unsigned long long size;
 		bool folder;
 		bool compressed;
 		struct timespec filedate;
-- 
2.11.4.GIT