1 files changed, 70 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/UI/Common/UpdateProduce.cpp b/other-licenses/7zstub/src/CPP/7zip/UI/Common/UpdateProduce.cpp
new file mode 100644
index 0000000000..c025ac4680
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/UI/Common/UpdateProduce.cpp
@@ -0,0 +1,70 @@
+// UpdateProduce.cpp
+
+#include "StdAfx.h"
+
+#include "UpdateProduce.h"
+
+using namespace NUpdateArchive;
+
+static const char * const kUpdateActionSetCollision = "Internal collision in update action set";
+
+void UpdateProduce(
+    const CRecordVector<CUpdatePair> &updatePairs,
+    const CActionSet &actionSet,
+    CRecordVector<CUpdatePair2> &operationChain,
+    IUpdateProduceCallback *callback)
+{
+  FOR_VECTOR (i, updatePairs)
+  {
+    const CUpdatePair &pair = updatePairs[i];
+
+    CUpdatePair2 up2;
+    up2.DirIndex = pair.DirIndex;
+    up2.ArcIndex = pair.ArcIndex;
+    up2.NewData = up2.NewProps = true;
+    up2.UseArcProps = false;
+    
+    switch (actionSet.StateActions[(unsigned)pair.State])
+    {
+      case NPairAction::kIgnore:
+        if (pair.ArcIndex >= 0 && callback)
+          callback->ShowDeleteFile(pair.ArcIndex);
+        continue;
+
+      case NPairAction::kCopy:
+        if (pair.State == NPairState::kOnlyOnDisk)
+          throw kUpdateActionSetCollision;
+        if (pair.State == NPairState::kOnlyInArchive)
+        {
+          if (pair.HostIndex >= 0)
+          {
+            /*
+              ignore alt stream if
+                1) no such alt stream in Disk
+                2) there is Host file in disk
+            */
+            if (updatePairs[pair.HostIndex].DirIndex >= 0)
+              continue;
+          }
+        }
+        up2.NewData = up2.NewProps = false;
+        up2.UseArcProps = true;
+        break;
+      
+      case NPairAction::kCompress:
+        if (pair.State == NPairState::kOnlyInArchive ||
+            pair.State == NPairState::kNotMasked)
+          throw kUpdateActionSetCollision;
+        break;
+      
+      case NPairAction::kCompressAsAnti:
+        up2.IsAnti = true;
+        up2.UseArcProps = (pair.ArcIndex >= 0);
+        break;
+    }
+
+    operationChain.Add(up2);
+  }
+  
+  operationChain.ReserveDown();
+}