GncQuotes - start implementation of fetch/fetch_all

libgnucash/app-utils/CMakeLists.txt

@@ -49,6 +49,7 @@ set(app_utils_ALL_SOURCES ${app_utils_SOURCES} ${app_utils_HEADERS})
 set(app_utils_ALL_LIBRARIES
     gnc-engine
     ${Boost_FILESYSTEM_LIBRARY}
+    ${Boost_PROPERTY_TREE_LIBRARY}
     ${GIO_LDFLAGS}
     ${LIBXML2_LDFLAGS}
     ${LIBXSLT_LDFLAGS}

libgnucash/app-utils/gnc-quotes.cpp

@@ -20,22 +20,32 @@
  * Boston, MA  02110-1301,  USA       gnu@gnu.org                   *
 \ *******************************************************************/
 
+#include <config.h>
+
 #include <algorithm>
 #include <vector>
 #include <string>
 #include <iostream>
+#include <sstream>
 #include <boost/filesystem.hpp>
 #include <boost/process.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>
 #include <glib.h>
+#include "gnc-commodity.hpp"
 #include "gnc-quotes.hpp"
 
 extern "C" {
+#include "gnc-commodity.h"
 #include "gnc-path.h"
+#include "gnc-ui-util.h"
 #include <gnc-prefs.h>
 #include <regex.h>
+#include <qofbook.h>
 }
 
 namespace bp = boost::process;
+namespace bpt = boost::property_tree;
 
 static GncQuotes quotes_cached;
 static bool quotes_initialized = false;
@@ -99,6 +109,56 @@ GncQuotes::sources_as_glist()
 }
 
 
+void
+GncQuotes::fetch (const CommVec& commodities)
+{
+    auto dflt_curr = gnc_default_currency();
+    bpt::ptree pt, pt_child;
+    pt.put ("defaultcurrency", gnc_commodity_get_mnemonic (dflt_curr));
+
+    std::for_each (commodities.cbegin(), commodities.cend(),
+        [&pt, &dflt_curr] (auto comm)
+        {
+            auto comm_mnemonic = gnc_commodity_get_mnemonic (comm);
+            auto comm_ns = std::string("currency");
+            if (gnc_commodity_is_currency (comm))
+            {
+                if (gnc_commodity_equiv(comm, dflt_curr) ||
+                    (!comm_mnemonic  || (strcmp (comm_mnemonic, "XXX") == 0)))
+                    return;
+            }
+            else
+                comm_ns = gnc_quote_source_get_internal_name (gnc_commodity_get_quote_source (comm));
+
+            auto key = comm_ns + "." + comm_mnemonic;
+            pt.put (key, "");
+        }
+
+    );
+
+    std::ostringstream result;
+    bpt::write_json(result, pt);
+    std::cerr << "GncQuotes fetch_all - resulting json object\n" << result.str() << std::endl;
+
+}
+
+
+void
+GncQuotes::fetch_all (QofBook *book)
+{
+    auto commodities = gnc_quotes_get_quotable_commodities (
+        gnc_commodity_table_get_table (book));
+
+    fetch (commodities);
+}
+
+static const std::vector <std::string>
+format_quotes (const std::vector<gnc_commodity*>)
+{
+    return std::vector <std::string>();
+}
+
+
 /********************************************************************
  * gnc_quotes_get_quotable_commodities
  * list commodities in a given namespace that get price quotes

libgnucash/app-utils/gnc-quotes.hpp

@@ -24,9 +24,11 @@
 
 #include <string>
 #include <vector>
+#include <gnc-commodity.hpp>  // For CommVec alias
 
 extern  "C" {
 #include <glib.h>
+#include <qofbook.h>
 }
 
 using QuoteSources = std::vector<std::string>;
@@ -36,10 +38,12 @@ const std::string not_found = std::string ("Not Found");
 class GncQuotes
 {
 public:
-    // Constructor - check for presence of Finance::Quote and import version and quote sources
+    // Constructor - checks for presence of Finance::Quote and import version and quote sources
     GncQuotes();
 
-    // Function to check if Finance::Quote is properly installed
+    void fetch_all (QofBook *book);
+    void fetch (const CommVec& commodities);
+
     const int cmd_result() noexcept { return m_cmd_result; }
     const std::string& error_msg() noexcept { return m_error_msg; }
     const std::string& version() noexcept { return m_version.empty() ? not_found : m_version; }
@@ -47,6 +51,7 @@ public:
     GList* sources_as_glist ();
 
 private:
+    // Function to check if Finance::Quote is properly installed
     void check (void);
 
     std::string m_version;

libgnucash/engine/CMakeLists.txt

@@ -53,6 +53,7 @@ set (engine_HEADERS
   gnc-aqbanking-templates.h
   gnc-budget.h
   gnc-commodity.h
+  gnc-commodity.hpp
   gnc-date.h
   gnc-datetime.hpp
   gnc-engine.h

libgnucash/engine/gnc-commodity.hpp

@@ -0,0 +1,46 @@
+/**********************************************************************
+ * gnc-commodity.hpp -- API for tradable commodities (incl. currency) *
+ *                                                                    *
+ * This program is free software; you can redistribute it and/or      *
+ * modify it under the terms of the GNU General Public License as     *
+ * published by the Free Software Foundation; either version 2 of     *
+ * the License, or (at your option) any later version.                *
+ *                                                                    *
+ * This program is distributed in the hope that it will be useful,    *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of     *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the      *
+ * GNU General Public License for more details.                       *
+ *                                                                    *
+ * You should have received a copy of the GNU General Public License  *
+ * along with this program; if not, contact:                          *
+ *                                                                    *
+ * Free Software Foundation           Voice:  +1-617-542-5942         *
+ * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652         *
+ * Boston, MA  02110-1301,  USA       gnu@gnu.org                     *
+ *                                                                    *
+ *********************************************************************/
+
+/** @addtogroup Engine
+    @{ */
+/** @addtogroup Commodity Commodities
+
+    @{ */
+/** @file gnc-commodity.hpp
+ *  @brief Commodity handling public routines (C++ api)
+ *  @author Copyright (C) 2021 Geert Janssens
+ */
+
+#ifndef GNC_COMMODITY_HPP
+#define GNC_COMMODITY_HPP
+
+#include <vector>
+
+extern "C" {
+#include <gnc-commodity.h>
+}
+
+using CommVec = std::vector<gnc_commodity*>;
+
+#endif /* GNC_COMMODITY_HPP */
+/** @} */
+/** @} */