wallet: option to merge destinations

With the change from the original transfer method to the new
algorithm, payments to the same destination were merged. It
seemed like a good idea, optimizing space. However, it is a
useful tool for people who want to split large outputs into
several smaller ones (ie, service providers making frequent
payments, and who do not like a large chunk of their balance
being locked for 10 blocks after each payment).

Default to off, which is a change from the previous behavior.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h
index d0d2cda3c..6d7bca2a5 100644
--- a/src/wallet/wallet2.h
+++ b/src/wallet/wallet2.h
@@ -105,7 +105,7 @@ namespace tools
     };
 
   private:
-    wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_ask_password(true), m_min_output_count(0), m_min_output_value(0), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex) {}
+    wallet2(const wallet2&) : m_run(true), m_callback(0), m_testnet(false), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_ask_password(true), m_min_output_count(0), m_min_output_value(0), m_merge_destinations(false), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex) {}
 
   public:
     static const char* tr(const char* str);
@@ -126,7 +126,7 @@ namespace tools
     //! Uses stdin and stdout. Returns a wallet2 and password for wallet with no file if no errors.
     static std::pair<std::unique_ptr<wallet2>, password_container> make_new(const boost::program_options::variables_map& vm);
 
-    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_ask_password(true), m_min_output_count(0), m_min_output_value(0), m_restricted(restricted), is_old_file_format(false), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex) {}
+    wallet2(bool testnet = false, bool restricted = false) : m_run(true), m_callback(0), m_testnet(testnet), m_always_confirm_transfers(true), m_print_ring_members(false), m_store_tx_info(true), m_default_mixin(0), m_default_priority(0), m_refresh_type(RefreshOptimizeCoinbase), m_auto_refresh(true), m_refresh_from_block_height(0), m_confirm_missing_payment_id(true), m_ask_password(true), m_min_output_count(0), m_min_output_value(0), m_merge_destinations(false), m_restricted(restricted), is_old_file_format(false), m_node_rpc_proxy(m_http_client, m_daemon_rpc_mutex) {}
 
     struct transfer_details
     {
@@ -531,6 +531,8 @@ namespace tools
     uint32_t get_min_output_count() const { return m_min_output_count; }
     void set_min_output_value(uint64_t value) { m_min_output_value = value; }
     uint64_t get_min_output_value() const { return m_min_output_value; }
+    void merge_destinations(bool merge) { m_merge_destinations = merge; }
+    bool merge_destinations() const { return m_merge_destinations; }
 
     bool get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key) const;
 
@@ -689,6 +691,7 @@ namespace tools
     bool m_ask_password;
     uint32_t m_min_output_count;
     uint64_t m_min_output_value;
+    bool m_merge_destinations;
     NodeRPCProxy m_node_rpc_proxy;
     std::unordered_set<crypto::hash> m_scanned_pool_txs[2];
   };