X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a7ea63e21fda950c658a477d59d0818aab993fc9..e9e8b38179b147dd04f5c19af7e56a94342e93a7:/include/wx/unichar.h diff --git a/include/wx/unichar.h b/include/wx/unichar.h index e9645cfcab..5d019f52ba 100644 --- a/include/wx/unichar.h +++ b/include/wx/unichar.h @@ -15,7 +15,8 @@ #include "wx/chartype.h" #include "wx/stringimpl.h" -class WXDLLIMPEXP_BASE wxUniCharRef; +class WXDLLIMPEXP_FWD_BASE wxUniCharRef; +class WXDLLIMPEXP_FWD_BASE wxString; // This class represents single Unicode character. It can be converted to // and from char or wchar_t and implements commonly used character operations. @@ -35,31 +36,73 @@ public: wxUniChar(unsigned char c) { m_value = From8bit((char)c); } // Create the character from a wchar_t character value. +#if wxWCHAR_T_IS_REAL_TYPE wxUniChar(wchar_t c) { m_value = c; } +#endif wxUniChar(int c) { m_value = c; } + wxUniChar(unsigned int c) { m_value = c; } + wxUniChar(long int c) { m_value = c; } + wxUniChar(unsigned long int c) { m_value = c; } + wxUniChar(short int c) { m_value = c; } + wxUniChar(unsigned short int c) { m_value = c; } wxUniChar(const wxUniCharRef& c); // Returns Unicode code point value of the character value_type GetValue() const { return m_value; } +#if wxUSE_UNICODE_UTF8 + // buffer for single UTF-8 character + struct Utf8CharBuffer + { + char data[5]; + operator const char*() const { return data; } + }; + + // returns the character encoded as UTF-8 + // (NB: implemented in stringops.cpp) + Utf8CharBuffer AsUTF8() const; +#endif // wxUSE_UNICODE_UTF8 + + // Returns true if the character is an ASCII character: + bool IsAscii() const { return m_value < 0x80; } + + // Returns true if the character is representable as a single byte in the + // current locale encoding and return this byte in output argument c (which + // must be non-NULL) + bool GetAsChar(char *c) const + { +#if wxUSE_UNICODE + if ( !IsAscii() ) + { +#if !wxUSE_UTF8_LOCALE_ONLY + if ( GetAsHi8bit(m_value, c) ) + return true; +#endif // !wxUSE_UTF8_LOCALE_ONLY + + return false; + } +#endif // wxUSE_UNICODE + + *c = wx_truncate_cast(char, m_value); + return true; + } + // Conversions to char and wchar_t types: all of those are needed to be // able to pass wxUniChars to verious standard narrow and wide character // functions operator char() const { return To8bit(m_value); } - operator wchar_t() const { return m_value; } - operator int() const { return m_value; } - - // More conversions needed for other standard functions: uchar is for VC++ - // _mbxxx() ones (to which toxxx/isxxx() are mapped when _MBCS is defined) - // and some wide character functions take wint_t which happens to be the - // same as wchar_t for Windows compilers but not for g++ (except for the - // special Apple version) operator unsigned char() const { return (unsigned char)To8bit(m_value); } -#if defined(__GNUC__) && !defined(__DARWIN__) - operator wint_t() const { return m_value; } +#if wxWCHAR_T_IS_REAL_TYPE + operator wchar_t() const { return (wchar_t)m_value; } #endif + operator int() const { return (int)m_value; } + operator unsigned int() const { return (unsigned int)m_value; } + operator long int() const { return (long int)m_value; } + operator unsigned long int() const { return (unsigned long)m_value; } + operator short int() const { return (short int)m_value; } + operator unsigned short int() const { return (unsigned short int)m_value; } // We need this operator for the "*p" part of expressions like "for ( // const_iterator p = begin() + nStart; *p; ++p )". In this case, @@ -68,17 +111,25 @@ public: // operator unspecified_bool_type() would only makes the ambiguity worse.) operator bool() const { return m_value != 0; } bool operator!() const { return !((bool)*this); } -#if (defined(__VISUALC__) && __VISUALC__ < 1400) || \ - defined(__DIGITALMARS__) || defined(__BORLANDC__) - // We need this for VC++ < 8 or DigitalMars and expressions like - // "str[0] && *p": + + // And this one is needed by some (not all, but not using ifdefs makes the + // code easier) compilers to parse "str[0] && *p" successfully bool operator&&(bool v) const { return (bool)*this && v; } -#endif // Assignment operators: - wxUniChar& operator=(const wxUniChar& c) { m_value = c.m_value; return *this; } + wxUniChar& operator=(const wxUniChar& c) { if (&c != this) m_value = c.m_value; return *this; } + wxUniChar& operator=(const wxUniCharRef& c); wxUniChar& operator=(char c) { m_value = From8bit(c); return *this; } + wxUniChar& operator=(unsigned char c) { m_value = From8bit((char)c); return *this; } +#if wxWCHAR_T_IS_REAL_TYPE wxUniChar& operator=(wchar_t c) { m_value = c; return *this; } +#endif + wxUniChar& operator=(int c) { m_value = c; return *this; } + wxUniChar& operator=(unsigned int c) { m_value = c; return *this; } + wxUniChar& operator=(long int c) { m_value = c; return *this; } + wxUniChar& operator=(unsigned long int c) { m_value = c; return *this; } + wxUniChar& operator=(short int c) { m_value = c; return *this; } + wxUniChar& operator=(unsigned short int c) { m_value = c; return *this; } // Comparison operators: @@ -86,7 +137,14 @@ public: #define wxDEFINE_UNICHAR_OPERATOR(op) \ bool operator op(const wxUniChar& c) const { return m_value op c.m_value; }\ bool operator op(char c) const { return m_value op From8bit(c); } \ - bool operator op(wchar_t c) const { return m_value op (value_type)c; } + bool operator op(unsigned char c) const { return m_value op From8bit((char)c); } \ + wxIF_WCHAR_T_TYPE( bool operator op(wchar_t c) const { return m_value op (value_type)c; } ) \ + bool operator op(int c) const { return m_value op (value_type)c; } \ + bool operator op(unsigned int c) const { return m_value op (value_type)c; } \ + bool operator op(short int c) const { return m_value op (value_type)c; } \ + bool operator op(unsigned short int c) const { return m_value op (value_type)c; } \ + bool operator op(long int c) const { return m_value op (value_type)c; } \ + bool operator op(unsigned long int c) const { return m_value op (value_type)c; } wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHAR_OPERATOR) @@ -95,11 +153,41 @@ public: // this is needed for expressions like 'Z'-c int operator-(const wxUniChar& c) const { return m_value - c.m_value; } int operator-(char c) const { return m_value - From8bit(c); } + int operator-(unsigned char c) const { return m_value - From8bit((char)c); } int operator-(wchar_t c) const { return m_value - (value_type)c; } + private: - static value_type From8bit(char c); - static char To8bit(value_type c); + // notice that we implement these functions inline for 7-bit ASCII + // characters purely for performance reasons + static value_type From8bit(char c) + { +#if wxUSE_UNICODE + if ( (unsigned char)c < 0x80 ) + return c; + + return FromHi8bit(c); +#else + return c; +#endif + } + + static char To8bit(value_type c) + { +#if wxUSE_UNICODE + if ( c < 0x80 ) + return wx_truncate_cast(char, c); + + return ToHi8bit(c); +#else + return c; +#endif + } + + // helpers of the functions above called to deal with non-ASCII chars + static value_type FromHi8bit(char c); + static char ToHi8bit(value_type v); + static bool GetAsHi8bit(value_type v, char *c); private: value_type m_value; @@ -116,7 +204,11 @@ private: typedef wxStringImpl::iterator iterator; // create the reference +#if wxUSE_UNICODE_UTF8 + wxUniCharRef(wxString& str, iterator pos) : m_str(str), m_pos(pos) {} +#else wxUniCharRef(iterator pos) : m_pos(pos) {} +#endif public: // NB: we have to make this public, because we don't have wxString @@ -124,50 +216,76 @@ public: // as friend; so at least don't use a ctor but a static function // that must be used explicitly (this is more than using 'explicit' // keyword on ctor!): +#if wxUSE_UNICODE_UTF8 + static wxUniCharRef CreateForString(wxString& str, iterator pos) + { return wxUniCharRef(str, pos); } +#else static wxUniCharRef CreateForString(iterator pos) { return wxUniCharRef(pos); } +#endif wxUniChar::value_type GetValue() const { return UniChar().GetValue(); } +#if wxUSE_UNICODE_UTF8 + wxUniChar::Utf8CharBuffer AsUTF8() const { return UniChar().AsUTF8(); } +#endif // wxUSE_UNICODE_UTF8 + + bool IsAscii() const { return UniChar().IsAscii(); } + bool GetAsChar(char *c) const { return UniChar().GetAsChar(c); } + // Assignment operators: - wxUniCharRef& operator=(const wxUniCharRef& c) - { - *m_pos = *c.m_pos; - return *this; - }; +#if wxUSE_UNICODE_UTF8 + wxUniCharRef& operator=(const wxUniChar& c); +#else + wxUniCharRef& operator=(const wxUniChar& c) { *m_pos = c; return *this; } +#endif - wxUniCharRef& operator=(const wxUniChar& c) - { - *m_pos = c; - return *this; - }; + wxUniCharRef& operator=(const wxUniCharRef& c) + { if (&c != this) *this = c.UniChar(); return *this; } wxUniCharRef& operator=(char c) { return *this = wxUniChar(c); } + wxUniCharRef& operator=(unsigned char c) { return *this = wxUniChar(c); } +#if wxWCHAR_T_IS_REAL_TYPE wxUniCharRef& operator=(wchar_t c) { return *this = wxUniChar(c); } +#endif + wxUniCharRef& operator=(int c) { return *this = wxUniChar(c); } + wxUniCharRef& operator=(unsigned int c) { return *this = wxUniChar(c); } + wxUniCharRef& operator=(short int c) { return *this = wxUniChar(c); } + wxUniCharRef& operator=(unsigned short int c) { return *this = wxUniChar(c); } + wxUniCharRef& operator=(long int c) { return *this = wxUniChar(c); } + wxUniCharRef& operator=(unsigned long int c) { return *this = wxUniChar(c); } // Conversions to the same types as wxUniChar is convertible too: operator char() const { return UniChar(); } - operator wchar_t() const { return UniChar(); } - operator int() const { return UniChar(); } operator unsigned char() const { return UniChar(); } -#if defined(__GNUC__) && !defined(__DARWIN__) - operator wint_t() const { return UniChar(); } +#if wxWCHAR_T_IS_REAL_TYPE + operator wchar_t() const { return UniChar(); } #endif + operator int() const { return UniChar(); } + operator unsigned int() const { return UniChar(); } + operator short int() const { return UniChar(); } + operator unsigned short int() const { return UniChar(); } + operator long int() const { return UniChar(); } + operator unsigned long int() const { return UniChar(); } // see wxUniChar::operator bool etc. for explanation operator bool() const { return (bool)UniChar(); } bool operator!() const { return !UniChar(); } -#if (defined(__VISUALC__) && __VISUALC__ < 1400) || \ - defined(__DIGITALMARS__) || defined(__BORLANDC__) bool operator&&(bool v) const { return UniChar() && v; } -#endif // Comparison operators: #define wxDEFINE_UNICHARREF_OPERATOR(op) \ bool operator op(const wxUniCharRef& c) const { return UniChar() op c.UniChar(); }\ bool operator op(const wxUniChar& c) const { return UniChar() op c; } \ bool operator op(char c) const { return UniChar() op c; } \ - bool operator op(wchar_t c) const { return UniChar() op c; } + bool operator op(unsigned char c) const { return UniChar() op c; } \ + wxIF_WCHAR_T_TYPE( bool operator op(wchar_t c) const { return UniChar() op c; } ) \ + bool operator op(int c) const { return UniChar() op c; } \ + bool operator op(unsigned int c) const { return UniChar() op c; } \ + bool operator op(short int c) const { return UniChar() op c; } \ + bool operator op(unsigned short int c) const { return UniChar() op c; } \ + bool operator op(long int c) const { return UniChar() op c; } \ + bool operator op(unsigned long int c) const { return UniChar() op c; } wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHARREF_OPERATOR) @@ -177,14 +295,23 @@ public: int operator-(const wxUniCharRef& c) const { return UniChar() - c.UniChar(); } int operator-(const wxUniChar& c) const { return UniChar() - c; } int operator-(char c) const { return UniChar() - c; } + int operator-(unsigned char c) const { return UniChar() - c; } int operator-(wchar_t c) const { return UniChar() - c; } private: +#if wxUSE_UNICODE_UTF8 + wxUniChar UniChar() const; +#else wxUniChar UniChar() const { return *m_pos; } - friend class WXDLLIMPEXP_BASE wxUniChar; +#endif + + friend class WXDLLIMPEXP_FWD_BASE wxUniChar; private: - // pointer to the character in string + // reference to the string and pointer to the character in string +#if wxUSE_UNICODE_UTF8 + wxString& m_str; +#endif iterator m_pos; }; @@ -193,6 +320,12 @@ inline wxUniChar::wxUniChar(const wxUniCharRef& c) m_value = c.UniChar().m_value; } +inline wxUniChar& wxUniChar::operator=(const wxUniCharRef& c) +{ + m_value = c.UniChar().m_value; + return *this; +} + // Comparison operators for the case when wxUniChar(Ref) is the second operand // implemented in terms of member comparison functions @@ -210,7 +343,7 @@ wxDEFINE_COMPARISONS(const wxUniChar&, const wxUniCharRef&, wxCMP_REVERSE) // for expressions like c-'A': inline int operator-(char c1, const wxUniCharRef& c2) { return -(c2 - c1); } -inline int operator-(wchar_t c1, const wxUniCharRef& c2) { return -(c2 - c1); } inline int operator-(const wxUniChar& c1, const wxUniCharRef& c2) { return -(c2 - c1); } +inline int operator-(wchar_t c1, const wxUniCharRef& c2) { return -(c2 - c1); } #endif /* _WX_UNICHAR_H_ */