Refactored CSV export.

src/csv.cpp

@@ -20,44 +20,47 @@
 using std::cerr;
 using std::endl;
 
-void export_csv(const vector<Database::entry> &entries, ostream &out)
+namespace Export
 {
-    try
+    void CSV::print() const
     {
-        out << "\"URI\",\"Archived URI\",\"Date & time\",\"Tags\","
-            << "\"Title\",\"Description\",\"Full text\"\r\n";
-        for (const Database::entry &entry : entries)
+        try
         {
-            string strtags;
-            for (const string &tag : entry.tags)
+            _out << "\"URI\",\"Archived URI\",\"Date & time\",\"Tags\","
+                 << "\"Title\",\"Description\",\"Full text\"\r\n";
+            for (const Database::entry &entry : _entries)
             {
-                strtags += tag;
-                if (tag != *(entry.tags.rbegin()))
+                string strtags;
+                for (const string &tag : entry.tags)
                 {
-                    strtags += ",";
+                    strtags += tag;
+                    if (tag != *(entry.tags.rbegin()))
+                    {
+                        strtags += ",";
+                    }
                 }
+                _out << '"' << quote(entry.uri) << "\",\""
+                     << quote(entry.archive_uri) << "\",\""
+                     << timepoint_to_string(entry.datetime) << "\",\""
+                     << quote(strtags) << "\",\""
+                     << quote(entry.title) << "\",\""
+                     << quote(entry.description) << "\",\""
+                     << quote(entry.fulltext_oneline()) << '"'<< "\r\n";
             }
-            out << '"' << quote_csv(entry.uri) << "\",\""
-                << quote_csv(entry.archive_uri) << "\",\""
-                << timepoint_to_string(entry.datetime) << "\",\""
-                << quote_csv(strtags) << "\",\""
-                << quote_csv(entry.title) << "\",\""
-                << quote_csv(entry.description) << "\",\""
-                << quote_csv(entry.fulltext_oneline()) << '"'<< "\r\n";
+        }
+        catch (std::exception &e)
+        {
+            cerr << "Error in " << __func__ << ": " << e.what() << endl;
         }
     }
-    catch (std::exception &e)
-    {
-        cerr << "Error in " << __func__ << ": " << e.what() << endl;
-    }
-}
 
-const string quote_csv(string field)
-{
-    size_t pos = 0;
-    while ((pos = field.find('"', pos)) != std::string::npos)
+    const string CSV::quote(string field) const
     {
-        field.replace(pos, 1, "\"\"");
+        size_t pos = 0;
+        while ((pos = field.find('"', pos)) != std::string::npos)
+        {
+            field.replace(pos, 1, "\"\"");
+        }
+        return field;
     }
-    return field;
 }

src/export.cpp

@@ -0,0 +1,25 @@
+/*  This file is part of remwharead.
+ *  Copyright © 2019 tastytea <tastytea@tastytea.de>
+ *
+ *  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, version 3.
+ *
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "export.hpp"
+
+namespace Export
+{
+    ExportBase::ExportBase(const vector<Database::entry> &entries, ostream &out)
+        : _entries(entries)
+        , _out(out)
+    {}
+}

src/export.hpp

@@ -26,9 +26,30 @@ using std::vector;
 using std::ostream;
 using std::cout;
 
-void export_csv(const vector<Database::entry> &entries, ostream &out = cout);
-//! replaces " with "".
-const string quote_csv(string field);
+namespace Export
+{
+    class ExportBase
+    {
+    public:
+        explicit ExportBase(const vector<Database::entry> &entries,
+                            ostream &out = cout);
+
+    protected:
+        const vector<Database::entry> &_entries;
+        ostream &_out;
+    };
+
+    class CSV : protected ExportBase
+    {
+    public:
+        using ExportBase::ExportBase;
+
+        void print() const;
+        //! replaces " with "".
+        const string quote(string field) const;
+    };
+}
+
 
 void export_adoc(const vector<Database::entry> &entries, ostream &out = cout);
 //! Replaces characters in tags that asciidoctor doesn't like.

src/main.cpp

@@ -98,12 +98,12 @@ int main(const int argc, const char *argv[])
         {
             if (file.is_open())
             {
-                export_csv(entries, file);
+                Export::CSV(entries, file).print();
                 file.close();
             }
             else
             {
-                export_csv(entries);
+                Export::CSV(entries).print();
             }
             break;
         }

tests/test_csv.cpp

@@ -47,7 +47,7 @@ SCENARIO ("The CSV export works correctly")
         try
         {
             std::ostringstream output;
-            export_csv({ entry }, output);
+            Export::CSV({ entry }, output).print();
             const string csv = output.str();
 
             const regex re