Convert smart quotes and dashes in reports to ASCII quotes and dashes.

Fixes https://gitlab.com/kicad/code/kicad/issues/1861

common/dialogs/wx_html_report_panel.cpp

@@ -26,6 +26,7 @@
 #include <wildcards_and_files_ext.h>
 #include <gal/color4d.h>
 #include <wx/clipbrd.h>
+#include <kicad_string.h>
 
 WX_HTML_REPORT_PANEL::WX_HTML_REPORT_PANEL( wxWindow* parent, 
                                             wxWindowID id, 
@@ -343,7 +344,10 @@ void WX_HTML_REPORT_PANEL::onBtnSaveToFile( wxCommandEvent& event )
 
     for( const REPORT_LINE& l : m_report )
     {
-        f.Write( generatePlainText( l ) );
+        wxString s = generatePlainText( l );
+
+        ConvertSmartQuotesAndDashes( &s );
+        f.Write( s );
     }
     m_ReportFileName = fn.GetFullPath();
     f.Close();

common/string.cpp

@@ -40,6 +40,33 @@
 static const char illegalFileNameChars[] = "\\/:\"<>|";
 
 
+bool ConvertSmartQuotesAndDashes( wxString* aString )
+{
+    bool retVal = false;
+
+    for( wxString::iterator ii = aString->begin(); ii != aString->end(); ++ii )
+    {
+        if( *ii == L'\u0060' || *ii == L'\u00B4' || *ii == L'\u2018' || *ii == L'\u2019' )
+        {
+            *ii = '\'';
+            retVal = true;
+        }
+        if( *ii == L'\u201C' || *ii == L'\u201D' )
+        {
+            *ii = '"';
+            retVal = true;
+        }
+        if( *ii == L'\u2013' || *ii == L'\u2014' )
+        {
+            *ii = '-';
+            retVal = true;
+        }
+    }
+
+    return retVal;
+}
+
+
 /**
  * These Escape/Unescape routines use HTML-entity-reference-style encoding to handle
  * characters which are:

include/kicad_string.h

@@ -38,6 +38,13 @@
 #include <wx/filename.h>
 
 
+/**
+ * Converts curly quotes and em/en dashes to straight quotes and dashes.
+ * @param aString
+ * @return true if any characters required conversion.
+ */
+bool ConvertSmartQuotesAndDashes( wxString* aString );
+
 /**
  * Escape/Unescape routines to safely encode reserved-characters in various
  * contexts.