874dbd3a4a
Calls to wxStrchr(char-string, wide-char) would previously fail if wide character couldn't be converted to a single character in the current locale encoding. Change it to simply return NULL in this case as it's a safe and useful generalization: a narrow string will never contain a wide character not representable in the current locale. Add wxUniChar::GetAsChar() to help with implementing this. Closes #11487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62738 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
137 lines
3.6 KiB
Objective-C
137 lines
3.6 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: unichar.h
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// Purpose: interface of wxUniChar
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// Author: wxWidgets team
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// RCS-ID: $Id$
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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/**
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@class wxUniChar
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This class represents a single Unicode character. It can be converted to
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and from @c char or @c wchar_t and implements commonly used character operations.
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@library{wxbase}
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@category{data}
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*/
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class wxUniChar
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{
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public:
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/**
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A type capable of holding any Unicode code point.
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We do not use wchar_t as it cannot do the job on Win32,
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where wchar_t is a 16-bit type (wchar_t* is encoded using UTF-16 on Win32).
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*/
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typedef wxUint32 value_type;
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/**
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Default ctor.
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*/
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wxUniChar();
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//@{
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/**
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Create a character from the 8-bit character value @a c using the
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current locale encoding.
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*/
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wxUniChar(char c);
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wxUniChar(unsigned char c);
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//@}
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wxUniChar(int c);
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wxUniChar(unsigned int c);
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wxUniChar(long int c);
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wxUniChar(unsigned long int c);
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wxUniChar(short int c);
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wxUniChar(unsigned short int c);
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wxUniChar(const wxUniCharRef& c);
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/**
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Returns Unicode code point value of the character.
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*/
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value_type GetValue() const;
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/**
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Returns true if the character is an ASCII character (i.e. if its value is less than 128).
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*/
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bool IsAscii() const;
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/**
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Returns true if the character is representable as a single byte in the
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current locale encoding.
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This function only returns true if the character can be converted in
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exactly one byte, e.g. it only returns true for 7 bit ASCII characters
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when the encoding used is UTF-8.
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It is mostly useful to test if the character can be passed to functions
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taking a char and is used by wxWidgets itself for this purpose.
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@param c
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An output pointer to the value of this Unicode character as a @c
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char. Must be non-@NULL.
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@return
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@true if the object is an 8 bit char and @a c was filled with its
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value as char or @false otherwise (@a c won't be modified then).
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@see IsAscii()
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@since 2.9.1
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*/
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bool GetAsChar(char *c) const;
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//@{
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/**
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Conversions to char and wchar_t types: all of those are needed to be
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able to pass wxUniChars to various standard narrow and wide character
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functions.
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*/
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operator char() const;
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operator unsigned char() const;
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operator wchar_t() const;
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operator int() const;
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operator unsigned int() const;
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operator long int() const;
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operator unsigned long int() const;
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operator short int() const;
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operator unsigned short int() const;
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//@}
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//@{
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/**
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Assignment operators
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*/
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wxUniChar& operator=(const wxUniChar& c);
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wxUniChar& operator=(const wxUniCharRef& c);
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wxUniChar& operator=(char c);
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wxUniChar& operator=(unsigned char c);
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wxUniChar& operator=(wchar_t c);
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wxUniChar& operator=(int c);
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wxUniChar& operator=(unsigned int c);
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wxUniChar& operator=(long int c);
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wxUniChar& operator=(unsigned long int c);
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wxUniChar& operator=(short int c);
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wxUniChar& operator=(unsigned short int c);
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//@}
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};
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/**
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@class wxUniCharRef
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Writeable reference to a character in wxString.
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This class can be used in the same way wxChar is used, except that changing
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its value updates the underlying string object.
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@library{wxbase}
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@category{data}
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*/
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class wxUniCharRef
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{
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public:
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};
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