1 files changed, 129 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/filters/filter.cpp b/src/libs/3rdparty/botan/src/lib/filters/filter.cpp
new file mode 100644
index 0000000000..6653fc7815
--- /dev/null
+++ b/src/libs/3rdparty/botan/src/lib/filters/filter.cpp
@@ -0,0 +1,129 @@
+/*
+* Filter
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/filter.h>
+#include <botan/exceptn.h>
+
+namespace Botan {
+
+/*
+* Filter Constructor
+*/
+Filter::Filter()
+   {
+   m_next.resize(1);
+   m_port_num = 0;
+   m_filter_owns = 0;
+   m_owned = false;
+   }
+
+/*
+* Send data to all ports
+*/
+void Filter::send(const uint8_t input[], size_t length)
+   {
+   if(!length)
+      return;
+
+   bool nothing_attached = true;
+   for(size_t j = 0; j != total_ports(); ++j)
+      if(m_next[j])
+         {
+         if(m_write_queue.size())
+            m_next[j]->write(m_write_queue.data(), m_write_queue.size());
+         m_next[j]->write(input, length);
+         nothing_attached = false;
+         }
+
+   if(nothing_attached)
+      m_write_queue += std::make_pair(input, length);
+   else
+      m_write_queue.clear();
+   }
+
+/*
+* Start a new message
+*/
+void Filter::new_msg()
+   {
+   start_msg();
+   for(size_t j = 0; j != total_ports(); ++j)
+      if(m_next[j])
+         m_next[j]->new_msg();
+   }
+
+/*
+* End the current message
+*/
+void Filter::finish_msg()
+   {
+   end_msg();
+   for(size_t j = 0; j != total_ports(); ++j)
+      if(m_next[j])
+         m_next[j]->finish_msg();
+   }
+
+/*
+* Attach a filter to the current port
+*/
+void Filter::attach(Filter* new_filter)
+   {
+   if(new_filter)
+      {
+      Filter* last = this;
+      while(last->get_next())
+         last = last->get_next();
+      last->m_next[last->current_port()] = new_filter;
+      }
+   }
+
+/*
+* Set the active port on a filter
+*/
+void Filter::set_port(size_t new_port)
+   {
+   if(new_port >= total_ports())
+      throw Invalid_Argument("Filter: Invalid port number");
+   m_port_num = new_port;
+   }
+
+/*
+* Return the next Filter in the logical chain
+*/
+Filter* Filter::get_next() const
+   {
+   if(m_port_num < m_next.size())
+      return m_next[m_port_num];
+   return nullptr;
+   }
+
+/*
+* Set the next Filters
+*/
+void Filter::set_next(Filter* filters[], size_t size)
+   {
+   m_next.clear();
+
+   m_port_num = 0;
+   m_filter_owns = 0;
+
+   while(size && filters && (filters[size-1] == nullptr))
+      --size;
+
+   if(filters && size)
+      m_next.assign(filters, filters + size);
+   }
+
+/*
+* Return the total number of ports
+*/
+size_t Filter::total_ports() const
+   {
+   return m_next.size();
+   }
+
+}