Internat.cpp

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  Internat.cpp
 
  Markus Meyer
  Dominic Mazzoni (Mac OS X code)
 
*******************************************************************//*******************************************************************/
 
#include "Internat.h"
 
#include <wx/log.h>
#include <wx/filename.h>
 
#include <locale.h>
#include <math.h> // for pow()
 
// in order for the static member variables to exist, they must appear here
// (_outside_) the class definition, in order to be allocated some storage.
// Otherwise, you get link errors.
 
wxChar Internat::mDecimalSeparator = wxT('.'); // default
// exclude is used by SanitiseFilename.
wxArrayString Internat::exclude;
 
STRINGS_API const wxString& GetCustomSubstitution(const wxString& str1)
{
   return str1 ;
}
 
// In any translated string, we can replace the name 'Audacity' with fork names
// without requiring translators to see extra strings for the two versions.
STRINGS_API const wxString& GetCustomTranslation(const wxString& str1)
{
   const wxString& str2 = wxGetTranslation( str1 );
   return GetCustomSubstitution( str2 );
}
 
 
void Internat::Init()
{
   // Save decimal point character
   struct lconv * localeInfo = localeconv();
   if (localeInfo)
      mDecimalSeparator = wxString(wxSafeConvertMB2WX(localeInfo->decimal_point)).GetChar(0);
 
//   wxLogDebug(wxT("Decimal separator set to '%c'"), mDecimalSeparator);
 
   // Setup list of characters that aren't allowed in file names
   // Hey!  The default wxPATH_NATIVE does not do as it should.
#if defined(__WXMAC__)
   wxPathFormat format = wxPATH_MAC;
#elif defined(__WXGTK__)
   wxPathFormat format = wxPATH_UNIX;
#elif defined(__WXMSW__)
   wxPathFormat format = wxPATH_WIN;
#endif
 
   // This is supposed to return characters not permitted in paths to files
   // or to directories
   auto forbid = wxFileName::GetForbiddenChars(format);
 
   for (auto cc: forbid) {
#if defined(__WXGTK__)
      if (cc == wxT('*') || cc == wxT('?')) {
         continue;
      }
#endif
      exclude.push_back(wxString{ cc });
   }
 
   // The path separators may not be forbidden, so add them
   //auto separators = wxFileName::GetPathSeparators(format);
 
   // Bug 1441 exclude all separators from filenames on all platforms.
   auto separators = wxString("\\/");
 
   for(auto cc: separators) {
      if (forbid.Find(cc) == wxNOT_FOUND)
         exclude.push_back(wxString{ cc });
   }
}
 
void Internat::SetCeeNumberFormat()
{
   wxSetlocale( LC_NUMERIC, "C" );
   mDecimalSeparator = '.';
}
 
 
wxChar Internat::GetDecimalSeparator()
{
   return mDecimalSeparator;
}
 
bool Internat::CompatibleToDouble(const wxString& stringToConvert, double* result)
{
   // Regardless of the locale, always respect comma _and_ point
   wxString s = stringToConvert;
   // Convert to C locale decimal point for stable parsing.
   s.Replace(wxT(","), wxT("."));
   s.Replace(wxString(GetDecimalSeparator()), wxT("."));
   return s.ToCDouble(result);
}
 
double Internat::CompatibleToDouble(const wxString& stringToConvert)
{
   double result = 0;
   Internat::CompatibleToDouble(stringToConvert, &result);
   return result;
}
 
wxString Internat::ToString(double numberToConvert,
                     int digitsAfterDecimalPoint /* = -1 */)
{
   wxString result = ToDisplayString(
      numberToConvert, digitsAfterDecimalPoint);
 
   result.Replace(wxString(GetDecimalSeparator()), wxT("."));
 
   return result;
}
 
wxString Internat::ToDisplayString(double numberToConvert,
                                    int digitsAfterDecimalPoint /* = -1 */)
{
   wxString decSep = wxString(GetDecimalSeparator());
   wxString result;
 
   if (digitsAfterDecimalPoint == -1)
   {
      result.Printf(wxT("%f"), numberToConvert);
 
      // Not all libcs respect the decimal separator, so always convert
      // any dots found to the decimal separator.
      result.Replace(wxT("."), decSep);
 
      if (result.Find(decSep) != -1)
      {
         // Strip trailing zeros, but leave one, and decimal separator.
         int pos = result.length() - 1;
         while ((pos > 1) &&
                  (result.GetChar(pos) == wxT('0')) &&
                  (result.GetChar(pos - 1) != decSep))
            pos--;
         // (Previous code removed all of them and decimal separator.)
         //    if (result.GetChar(pos) == decSep)
         //       pos--; // strip point before empty fractional part
         result = result.Left(pos+1);
      }
   }
   else
   {
      wxString format;
      format.Printf(wxT("%%.%if"), digitsAfterDecimalPoint);
      result.Printf(format, numberToConvert);
 
      // Not all libcs respect the decimal separator, so always convert
      // any dots found to the decimal separator
      result.Replace(wxT("."), decSep);
   }
 
   return result;
}
 
TranslatableString Internat::FormatSize(wxLongLong size)
{
   /* wxLongLong contains no built-in conversion to double */
   double dSize = size.GetHi() * pow(2.0, 32);  // 2 ^ 32
   dSize += size.GetLo();
 
   return FormatSize(dSize);
}
 
TranslatableString Internat::FormatSize(double size)
{
   TranslatableString sizeStr;
 
   if (size == -1)
      sizeStr = XO("Unable to determine");
   else {
      /* make it look nice, by formatting into k, MB, etc */
      if (size < 1024.0)
         sizeStr = XO("%s bytes").Format( ToDisplayString(size) );
      else if (size < 1024.0 * 1024.0) {
         /* i18n-hint: Abbreviation for Kilo bytes */
         sizeStr = XO("%s KB").Format( ToDisplayString(size / 1024.0, 1) );
      }
      else if (size < 1024.0 * 1024.0 * 1024.0) {
         /* i18n-hint: Abbreviation for Mega bytes */
         sizeStr = XO("%s MB").Format( ToDisplayString(size / (1024.0 * 1024.0), 1) );
      }
      else {
         /* i18n-hint: Abbreviation for Giga bytes */
         sizeStr = XO("%s GB").Format( ToDisplayString(size / (1024.0 * 1024.0 * 1024.0), 1) );
      }
   }
 
   return sizeStr;
}
 
bool Internat::SanitiseFilename(wxString &name, const wxString &sub)
{
   bool result = false;
   for(const auto &item : exclude)
   {
      if(name.Contains(item))
      {
         name.Replace(item, sub);
         result = true;
      }
   }
 
#ifdef __WXMAC__
   // Special Mac stuff
   // '/' is permitted in file names as seen in dialogs, even though it is
   // the path separator.  The "real" filename as seen in the terminal has ':'.
   // Do NOT return true if this is the only substitution.
   name.Replace(wxT("/"), wxT(":"));
#endif
 
   return result;
}