diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/C/Archive/7z/7zItem.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/C/Archive/7z/7zItem.c	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,134 @@
+/* 7zItem.c */
+
+#include "7zItem.h"
+#include "7zAlloc.h"
+
+void SzCoderInfoInit(CCoderInfo *coder)
+{
+  SzByteBufferInit(&coder->Properties);
+}
+
+void SzCoderInfoFree(CCoderInfo *coder, void (*freeFunc)(void *p))
+{
+  SzByteBufferFree(&coder->Properties, freeFunc);
+  SzCoderInfoInit(coder);
+}
+
+void SzFolderInit(CFolder *folder)
+{
+  folder->NumCoders = 0;
+  folder->Coders = 0;
+  folder->NumBindPairs = 0;
+  folder->BindPairs = 0;
+  folder->NumPackStreams = 0;
+  folder->PackStreams = 0;
+  folder->UnPackSizes = 0;
+  folder->UnPackCRCDefined = 0;
+  folder->UnPackCRC = 0;
+  folder->NumUnPackStreams = 0;
+}
+
+void SzFolderFree(CFolder *folder, void (*freeFunc)(void *p))
+{
+  UInt32 i;
+  for (i = 0; i < folder->NumCoders; i++)
+    SzCoderInfoFree(&folder->Coders[i], freeFunc);
+  freeFunc(folder->Coders);
+  freeFunc(folder->BindPairs);
+  freeFunc(folder->PackStreams);
+  freeFunc(folder->UnPackSizes);
+  SzFolderInit(folder);
+}
+
+UInt32 SzFolderGetNumOutStreams(CFolder *folder)
+{
+  UInt32 result = 0;
+  UInt32 i;
+  for (i = 0; i < folder->NumCoders; i++)
+    result += folder->Coders[i].NumOutStreams;
+  return result;
+}
+
+int SzFolderFindBindPairForInStream(CFolder *folder, UInt32 inStreamIndex)
+{
+  UInt32 i;
+  for(i = 0; i < folder->NumBindPairs; i++)
+    if (folder->BindPairs[i].InIndex == inStreamIndex)
+      return i;
+  return -1;
+}
+
+
+int SzFolderFindBindPairForOutStream(CFolder *folder, UInt32 outStreamIndex)
+{
+  UInt32 i;
+  for(i = 0; i < folder->NumBindPairs; i++)
+    if (folder->BindPairs[i].OutIndex == outStreamIndex)
+      return i;
+  return -1;
+}
+
+CFileSize SzFolderGetUnPackSize(CFolder *folder)
+{ 
+  int i = (int)SzFolderGetNumOutStreams(folder);
+  if (i == 0)
+    return 0;
+  for (i--; i >= 0; i--)
+    if (SzFolderFindBindPairForOutStream(folder, i) < 0)
+      return folder->UnPackSizes[i];
+  /* throw 1; */
+  return 0;
+}
+
+/*
+int FindPackStreamArrayIndex(int inStreamIndex) const
+{
+  for(int i = 0; i < PackStreams.Size(); i++)
+  if (PackStreams[i] == inStreamIndex)
+    return i;
+  return -1;
+}
+*/
+
+void SzFileInit(CFileItem *fileItem)
+{
+  fileItem->IsFileCRCDefined = 0;
+  fileItem->HasStream = 1;
+  fileItem->IsDirectory = 0;
+  fileItem->IsAnti = 0;
+  fileItem->IsLastWriteTimeDefined = 0;
+  fileItem->Name = 0;
+}
+
+void SzFileFree(CFileItem *fileItem, void (*freeFunc)(void *p))
+{
+  freeFunc(fileItem->Name);
+  SzFileInit(fileItem);
+}
+
+void SzArchiveDatabaseInit(CArchiveDatabase *db)
+{
+  db->NumPackStreams = 0;
+  db->PackSizes = 0;
+  db->PackCRCsDefined = 0;
+  db->PackCRCs = 0;
+  db->NumFolders = 0;
+  db->Folders = 0;
+  db->NumFiles = 0;
+  db->Files = 0;
+}
+
+void SzArchiveDatabaseFree(CArchiveDatabase *db, void (*freeFunc)(void *))
+{
+  UInt32 i;
+  for (i = 0; i < db->NumFolders; i++)
+    SzFolderFree(&db->Folders[i], freeFunc);
+  for (i = 0; i < db->NumFiles; i++)
+    SzFileFree(&db->Files[i], freeFunc);
+  freeFunc(db->PackSizes);
+  freeFunc(db->PackCRCsDefined);
+  freeFunc(db->PackCRCs);
+  freeFunc(db->Folders);
+  freeFunc(db->Files);
+  SzArchiveDatabaseInit(db);
+}