Add wx headers and ext

wxheaders/wx/numformatter.h

@@ -0,0 +1,88 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/numformatter.h
+// Purpose:     wxNumberFormatter class
+// Author:      Fulvio Senore, Vadim Zeitlin
+// Created:     2010-11-06
+// Copyright:   (c) 2010 wxWidgets team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_NUMFORMATTER_H_
+#define _WX_NUMFORMATTER_H_
+
+#include "wx/string.h"
+
+// Helper class for formatting numbers with thousands separators which also
+// supports parsing the numbers formatted by it.
+class WXDLLIMPEXP_BASE wxNumberFormatter
+{
+public:
+    // Bit masks for ToString()
+    enum Style
+    {
+        Style_None              = 0x00,
+        Style_WithThousandsSep  = 0x01,
+        Style_NoTrailingZeroes  = 0x02      // Only for floating point numbers
+    };
+
+    // Format a number as a string. By default, the thousands separator is
+    // used, specify Style_None to prevent this. For floating point numbers,
+    // precision can also be specified.
+    static wxString ToString(long val,
+                             int style = Style_WithThousandsSep);
+#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+    static wxString ToString(wxLongLong_t val,
+                             int style = Style_WithThousandsSep);
+#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+    static wxString ToString(wxULongLong_t val,
+                             int style = Style_WithThousandsSep);
+    static wxString ToString(double val,
+                             int precision,
+                             int style = Style_WithThousandsSep);
+
+    // Format the given number using one of the floating point formats and
+    // ensure that the result uses the correct decimal separator.
+    // Prefer using ToString() if possible, i.e. if format is "%g" or "%.Nf"
+    // which are supported by it directly.
+    static wxString Format(const wxString& format, double val);
+
+
+    // Parse a string representing a number, possibly with thousands separator.
+    //
+    // Return true on success and stores the result in the provided location
+    // which must be a valid non-NULL pointer.
+    static bool FromString(wxString s, long *val);
+#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+    static bool FromString(wxString s, wxLongLong_t *val);
+#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
+    static bool FromString(wxString s, wxULongLong_t *val);
+    static bool FromString(wxString s, double *val);
+
+
+    // Get the decimal separator for the current locale. It is always defined
+    // and we fall back to returning '.' in case of an error.
+    static wxChar GetDecimalSeparator();
+
+    // Get the thousands separator if grouping of the digits is used by the
+    // current locale. The value returned in sep should be only used if the
+    // function returns true.
+    static bool GetThousandsSeparatorIfUsed(wxChar *sep);
+
+private:
+    // Post-process the string representing an integer.
+    static wxString PostProcessIntString(wxString s, int style);
+
+    // Add the thousands separators to a string representing a number without
+    // the separators. This is used by ToString(Style_WithThousandsSep).
+    static void AddThousandsSeparators(wxString& s);
+
+    // Remove trailing zeroes and, if there is nothing left after it, the
+    // decimal separator itself from a string representing a floating point
+    // number. Also used by ToString().
+    static void RemoveTrailingZeroes(wxString& s);
+
+    // Remove all thousands separators from a string representing a number.
+    static void RemoveThousandsSeparators(wxString& s);
+};
+
+#endif // _WX_NUMFORMATTER_H_