1 files changed, 55 insertions, 0 deletions
diff --git a/src/libs/7zip/win/CPP/7zip/Common/FilePathAutoRename.cpp b/src/libs/7zip/win/CPP/7zip/Common/FilePathAutoRename.cpp
new file mode 100644
index 000000000..7d6e36f14
--- /dev/null
+++ b/src/libs/7zip/win/CPP/7zip/Common/FilePathAutoRename.cpp
@@ -0,0 +1,55 @@
+// FilePathAutoRename.cpp
+
+#include "StdAfx.h"
+
+#include "Common/Defs.h"
+#include "Common/IntToString.h"
+
+#include "Windows/FileFind.h"
+
+#include "FilePathAutoRename.h"
+
+using namespace NWindows;
+
+static bool MakeAutoName(const UString &name,
+    const UString &extension, unsigned value, UString &path)
+{
+  wchar_t number[16];
+  ConvertUInt32ToString(value, number);
+  path = name;
+  path += number;
+  path += extension;
+  return NFile::NFind::DoesFileOrDirExist(path);
+}
+
+bool AutoRenamePath(UString &fullProcessedPath)
+{
+  UString path;
+  int dotPos = fullProcessedPath.ReverseFind(L'.');
+
+  int slashPos = fullProcessedPath.ReverseFind(L'/');
+  #ifdef _WIN32
+  int slash1Pos = fullProcessedPath.ReverseFind(L'\\');
+  slashPos = MyMax(slashPos, slash1Pos);
+  #endif
+
+  UString name, extension;
+  if (dotPos > slashPos && dotPos > 0)
+  {
+    name = fullProcessedPath.Left(dotPos);
+    extension = fullProcessedPath.Mid(dotPos);
+  }
+  else
+    name = fullProcessedPath;
+  name += L'_';
+  unsigned left = 1, right = (1 << 30);
+  while (left != right)
+  {
+    unsigned mid = (left + right) / 2;
+    if (MakeAutoName(name, extension, mid, path))
+      left = mid + 1;
+    else
+      right = mid;
+  }
+  return !MakeAutoName(name, extension, right, fullProcessedPath);
+}