Provide a std::to_string replacement for android

include/ToString.h

+/*****************************************************************************
+ * Media Library
+ *****************************************************************************
+ * Copyright (C) 2015 Hugo Beauzée-Luyssen, Videolabs
+ *
+ * Authors: Hugo Beauzée-Luyssen<hugo@beauzee.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#pragma once
+
+#include <string>
+
+#ifndef __ANDROID__
+
+template <typename T>
+inline std::string toString(T t)
+{
+    static_assert(std::is_fundamental<T>::value, "This only supports fundamental types");
+    return std::to_string(t);
+}
+
+#else
+
+#include <sstream>
+
+template <typename T>
+inline std::string toString(T t)
+{
+    static_assert(std::is_fundamental<T>::value, "This only supports fundamental types");
+    std::ostringstream ss;
+    ss << std::forward<T>(t);
+    return ss.str();
+}
+
+#endif

src/History.cpp

@@ -23,6 +23,7 @@
 #include "History.h"
 
 #include "database/SqliteTools.h"
+#include "ToString.h"
 
 namespace policy
 {
@@ -56,7 +57,7 @@ bool History::createTable( DBConnection dbConnection )
             " BEGIN "
             "DELETE FROM " + policy::HistoryTable::Name + " WHERE id_record in "
                 "(SELECT id_record FROM " + policy::HistoryTable::Name +
-                " ORDER BY insertion_date DESC LIMIT -1 OFFSET " + std::to_string( MaxEntries ) + ");"
+                " ORDER BY insertion_date DESC LIMIT -1 OFFSET " + toString( MaxEntries ) + ");"
             " END";
     return sqlite::Tools::executeRequest( dbConnection, req ) &&
             sqlite::Tools::executeRequest( dbConnection, triggerReq );

src/database/SqliteErrors.h

@@ -24,6 +24,7 @@
 
 #include <string>
 #include <exception>
+#include "ToString.h"
 
 namespace sqlite
 {
@@ -52,8 +53,8 @@ class ColumnOutOfRange : public std::exception
 public:
     ColumnOutOfRange( unsigned int idx, unsigned int nbColumns )
     {
-        m_reason = "Attempting to extract column at index " + std::to_string( idx ) +
-                " from a request with " + std::to_string( nbColumns ) + " columns";
+        m_reason = "Attempting to extract column at index " + toString( idx ) +
+                " from a request with " + toString( nbColumns ) + " columns";
     }
 
     virtual const char* what() const noexcept override

src/metadata_services/MetadataParser.cpp

@@ -28,6 +28,7 @@
 #include "Genre.h"
 #include "Media.h"
 #include "Show.h"
+#include "ToString.h"
 #include "utils/Filename.h"
 #include "utils/ModificationsNotifier.h"
 
@@ -318,7 +319,7 @@ std::shared_ptr<AlbumTrack> MetadataParser::handleTrack( std::shared_ptr<Album>
         if ( task.trackNumber != 0 )
         {
             title = "Track #";
-            title += std::to_string( task.trackNumber );
+            title += toString( task.trackNumber );
         }
     }
     if ( title.empty() == false )

src/metadata_services/vlc/VLCThumbnailer.cpp

@@ -42,6 +42,7 @@
 #include "logging/Logger.h"
 #include "MediaLibrary.h"
 #include "utils/VLCInstance.h"
+#include "ToString.h"
 
 VLCThumbnailer::VLCThumbnailer()
     : m_instance( VLCInstance::get() )
@@ -276,7 +277,7 @@ parser::Task::Status VLCThumbnailer::compress( std::shared_ptr<Media> media, std
 {
     auto path = m_ml->thumbnailPath();
     path += "/";
-    path += std::to_string( media->id() ) +
+    path += toString( media->id() ) +
 #ifdef WITH_EVAS
             ".png";
 #else