f2a5052baa
It seems to make sense to allow using it for formatting and parsing long long values as well as it can be done trivially using almost the same code as for long. It would be nice to support long double in a similar way but we don't wrap C99 strtold() right now so it wouldn't be as simple, leave it for later. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66712 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/numformatter.h
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// Purpose: wxNumberFormatter class
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// Author: Fulvio Senore, Vadim Zeitlin
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// Created: 2010-11-06
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// Copyright: (c) 2010 wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_NUMFORMATTER_H_
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#define _WX_NUMFORMATTER_H_
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#include "wx/string.h"
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// Helper class for formatting numbers with thousands separators which also
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// supports parsing the numbers formatted by it.
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class WXDLLIMPEXP_BASE wxNumberFormatter
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{
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public:
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// Bit masks for ToString()
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enum Style
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{
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Style_None = 0x00,
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Style_WithThousandsSep = 0x01,
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Style_NoTrailingZeroes = 0x02 // Only for floating point numbers
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};
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// Format a number as a string. By default, the thousands separator is
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// used, specify Style_None to prevent this. For floating point numbers,
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// precision can also be specified.
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static wxString ToString(long val,
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int style = Style_WithThousandsSep);
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static wxString ToString(wxLongLong_t val,
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int style = Style_WithThousandsSep);
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static wxString ToString(double val,
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int precision,
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int style = Style_WithThousandsSep);
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// Parse a string representing a number, possibly with thousands separator.
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//
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// Return true on success and stores the result in the provided location
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// which must be a valid non-NULL pointer.
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static bool FromString(wxString s, long *val);
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#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static bool FromString(wxString s, wxLongLong_t *val);
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#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG
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static bool FromString(wxString s, double *val);
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// Get the decimal separator for the current locale. It is always defined
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// and we fall back to returning '.' in case of an error.
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static wxChar GetDecimalSeparator();
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// Get the thousands separator if grouping of the digits is used by the
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// current locale. The value returned in sep should be only used if the
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// function returns true.
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static bool GetThousandsSeparatorIfUsed(wxChar *sep);
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private:
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// Post-process the string representing an integer.
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static wxString PostProcessIntString(wxString s, int style);
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// Add the thousands separators to a string representing a number without
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// the separators. This is used by ToString(Style_WithThousandsSep).
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static void AddThousandsSeparators(wxString& s);
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// Remove trailing zeroes and, if there is nothing left after it, the
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// decimal separator itself from a string representing a floating point
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// number. Also used by ToString().
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static void RemoveTrailingZeroes(wxString& s);
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// Remove all thousands separators from a string representing a number.
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static void RemoveThousandsSeparators(wxString& s);
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};
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#endif // _WX_NUMFORMATTER_H_
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