X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/113f623379b1517b0abd53df8c957a1305a8e981..880d76dfb12d4e8466df30d641bb25c6f71bd398:/include/wx/string.h diff --git a/include/wx/string.h b/include/wx/string.h index 65e29e10ec..53ae8907d8 100644 --- a/include/wx/string.h +++ b/include/wx/string.h @@ -24,7 +24,6 @@ #include "wx/defs.h" // everybody should include this -#ifndef __WXPALMOS5__ #if defined(__WXMAC__) || defined(__VISAGECPP__) #include #endif @@ -47,7 +46,6 @@ #ifdef HAVE_STRCASECMP_IN_STRINGS_H #include // for strcasecmp() #endif // HAVE_STRCASECMP_IN_STRINGS_H -#endif // ! __WXPALMOS5__ #include "wx/wxcrtbase.h" // for wxChar, wxStrlen() etc. #include "wx/strvararg.h" @@ -71,7 +69,7 @@ // it would have to be re-tested and probably corrected // CS: under OSX release builds the string destructor/cache cleanup sometimes // crashes, disable until we find the true reason or a better workaround -#if wxUSE_UNICODE_UTF8 && !defined(__WXMSW__) && !defined(__WXOSX__) +#if wxUSE_UNICODE_UTF8 && !defined(__WINDOWS__) && !defined(__WXOSX__) #define wxUSE_STRING_POS_CACHE 1 #else #define wxUSE_STRING_POS_CACHE 0 @@ -156,7 +154,7 @@ inline int Stricmp(const char *psz1, const char *psz2) } while ( c1 && (c1 == c2) ); return c1 - c2; -#elif defined(__VISUALC__) || ( defined(__MWERKS__) && defined(__INTEL__) ) +#elif defined(__VISUALC__) return _stricmp(psz1, psz2); #elif defined(__SC__) return _stricmp(psz1, psz2); @@ -170,19 +168,10 @@ inline int Stricmp(const char *psz1, const char *psz2) return stricmp(psz1, psz2); #elif defined(__WXPM__) return stricmp(psz1, psz2); -#elif defined(__WXPALMOS__) || \ - defined(HAVE_STRCASECMP_IN_STRING_H) || \ +#elif defined(HAVE_STRCASECMP_IN_STRING_H) || \ defined(HAVE_STRCASECMP_IN_STRINGS_H) || \ defined(__GNUWIN32__) return strcasecmp(psz1, psz2); -#elif defined(__MWERKS__) && !defined(__INTEL__) - register char c1, c2; - do { - c1 = tolower(*psz1++); - c2 = tolower(*psz2++); - } while ( c1 && (c1 == c2) ); - - return c1 - c2; #else // almost all compilers/libraries provide this function (unfortunately under // different names), that's why we don't implement our own which will surely @@ -225,19 +214,19 @@ public: inline ~wxCStrData(); - // methods defined inline below must be declared inline or mingw32 3.4.5 - // warns about " defined locally after being referenced with - // dllimport linkage" -#if wxUSE_UNICODE_WCHAR - inline -#endif - const wchar_t* AsWChar() const; + // AsWChar() and AsChar() can't be defined here as they use wxString and so + // must come after it and because of this won't be inlined when called from + // wxString methods (without a lot of work to extract these wxString methods + // from inside the class itself). But we still define them being inline + // below to let compiler inline them from elsewhere. And because of this we + // must declare them as inline here because otherwise some compilers give + // warnings about them, e.g. mingw32 3.4.5 warns about " defined + // locally after being referenced with dllimport linkage" while IRIX + // mipsPro 7.4 warns about "function declared inline after being called". + inline const wchar_t* AsWChar() const; operator const wchar_t*() const { return AsWChar(); } -#if !wxUSE_UNICODE || wxUSE_UTF8_LOCALE_ONLY - inline -#endif - const char* AsChar() const; + inline const char* AsChar() const; const unsigned char* AsUnsignedChar() const { return (const unsigned char *) AsChar(); } operator const char*() const { return AsChar(); } @@ -288,7 +277,7 @@ public: wxCStrData operator-(ptrdiff_t n) const { wxASSERT_MSG( n <= (ptrdiff_t)m_offset, - _T("attempt to construct address before the beginning of the string") ); + wxT("attempt to construct address before the beginning of the string") ); return wxCStrData(m_str, m_offset - n, m_owned); } @@ -408,6 +397,7 @@ protected: #ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN // "non dll-interface class 'wxStringPrintfMixin' used as base interface // for dll-interface class 'wxString'" -- this is OK in our case + #pragma warning (push) #pragma warning (disable:4275) #endif @@ -1003,9 +993,19 @@ public: iterator operator-(ptrdiff_t n) const { return iterator(str(), wxStringOperations::AddToIter(m_cur, -n)); } + // Normal iterators need to be comparable with the const_iterators so + // declare the comparison operators and implement them below after the + // full const_iterator declaration. + bool operator==(const const_iterator& i) const; + bool operator!=(const const_iterator& i) const; + bool operator<(const const_iterator& i) const; + bool operator>(const const_iterator& i) const; + bool operator<=(const const_iterator& i) const; + bool operator>=(const const_iterator& i) const; + private: - iterator(wxString *str, underlying_iterator ptr) - : m_cur(ptr), m_node(str, &m_cur) {} + iterator(wxString *wxstr, underlying_iterator ptr) + : m_cur(ptr), m_node(wxstr, &m_cur) {} wxString* str() const { return const_cast(m_node.m_str); } @@ -1047,10 +1047,15 @@ public: const_iterator operator-(ptrdiff_t n) const { return const_iterator(str(), wxStringOperations::AddToIter(m_cur, -n)); } + // Notice that comparison operators taking non-const iterator are not + // needed here because of the implicit conversion from non-const iterator + // to const ones ensure that the versions for const_iterator declared + // inside WX_STR_ITERATOR_IMPL can be used. + private: // for internal wxString use only: - const_iterator(const wxString *str, underlying_iterator ptr) - : m_cur(ptr), m_node(str, &m_cur) {} + const_iterator(const wxString *wxstr, underlying_iterator ptr) + : m_cur(ptr), m_node(wxstr, &m_cur) {} const wxString* str() const { return m_node.m_str; } @@ -1082,6 +1087,15 @@ public: iterator operator-(ptrdiff_t n) const { return iterator(wxStringOperations::AddToIter(m_cur, -n)); } + // As in UTF-8 case above, define comparison operators taking + // const_iterator too. + bool operator==(const const_iterator& i) const; + bool operator!=(const const_iterator& i) const; + bool operator<(const const_iterator& i) const; + bool operator>(const const_iterator& i) const; + bool operator<=(const const_iterator& i) const; + bool operator>=(const const_iterator& i) const; + private: // for internal wxString use only: iterator(underlying_iterator ptr) : m_cur(ptr) {} @@ -1109,6 +1123,11 @@ public: const_iterator operator-(ptrdiff_t n) const { return const_iterator(wxStringOperations::AddToIter(m_cur, -n)); } + // As in UTF-8 case above, we don't need comparison operators taking + // iterator because we have an implicit conversion from iterator to + // const_iterator so the operators declared by WX_STR_ITERATOR_IMPL will + // be used. + private: // for internal wxString use only: const_iterator(underlying_iterator ptr) : m_cur(ptr) {} @@ -1123,6 +1142,25 @@ public: #undef WX_STR_ITERATOR_TAG #undef WX_STR_ITERATOR_IMPL + // This method is mostly used by wxWidgets itself and return the offset of + // the given iterator in bytes relative to the start of the buffer + // representing the current string contents in the current locale encoding. + // + // It is inefficient as it involves converting part of the string to this + // encoding (and also unsafe as it simply returns 0 if the conversion fails) + // and so should be avoided if possible, wx itself only uses it to implement + // backwards-compatible API. + ptrdiff_t IterOffsetInMBStr(const const_iterator& i) const + { + const wxString str(begin(), i); + + // This is logically equivalent to strlen(str.mb_str()) but avoids + // actually converting the string to multibyte and just computes the + // length that it would have after conversion. + size_t ofs = wxConvLibc.FromWChar(NULL, 0, str.wc_str(), str.length()); + return ofs == wxCONV_FAILED ? 0 : static_cast(ofs); + } + friend class iterator; friend class const_iterator; @@ -1315,12 +1353,13 @@ public: } #endif // wxUSE_STRING_POS_CACHE - // even if we're not built with wxUSE_STL == 1 it is very convenient to allow - // implicit conversions from std::string to wxString and vice verse as this - // allows to use the same strings in non-GUI and GUI code, however we don't - // want to unconditionally add this ctor as it would make wx lib dependent on - // libstdc++ on some Linux versions which is bad, so instead we ask the - // client code to define this wxUSE_STD_STRING symbol if they need it + // even if we're not built with wxUSE_STD_STRING_CONV_IN_WXSTRING == 1 it is + // very convenient to allow implicit conversions from std::string to wxString + // and vice verse as this allows to use the same strings in non-GUI and GUI + // code, however we don't want to unconditionally add this ctor as it would + // make wx lib dependent on libstdc++ on some Linux versions which is bad, so + // instead we ask the client code to define this wxUSE_STD_STRING symbol if + // they need it #if wxUSE_STD_STRING #if wxUSE_UNICODE_WCHAR wxString(const wxStdWideString& str) : m_impl(str) {} @@ -1338,34 +1377,57 @@ public: #endif #endif // wxUSE_STD_STRING - // Unlike ctor from std::string, we provide conversion to std::string only - // if wxUSE_STL and not merely wxUSE_STD_STRING (which is on by default), - // because it conflicts with operator const char/wchar_t*: -#if wxUSE_STL + // Also always provide explicit conversions to std::[w]string in any case, + // see below for the implicit ones. +#if wxUSE_STD_STRING + // We can avoid a copy if we already use this string type internally, + // otherwise we create a copy on the fly: #if wxUSE_UNICODE_WCHAR && wxUSE_STL_BASED_WXSTRING - // wxStringImpl is std::string in the encoding we want - operator const wxStdWideString&() const { return m_impl; } + #define wxStringToStdWstringRetType const wxStdWideString& + const wxStdWideString& ToStdWstring() const { return m_impl; } #else // wxStringImpl is either not std::string or needs conversion - operator wxStdWideString() const + #define wxStringToStdWstringRetType wxStdWideString + wxStdWideString ToStdWstring() const { +#if wxUSE_UNICODE_WCHAR + wxScopedWCharBuffer buf = + wxScopedWCharBuffer::CreateNonOwned(m_impl.c_str(), m_impl.length()); +#else // !wxUSE_UNICODE_WCHAR wxScopedWCharBuffer buf(wc_str()); +#endif + return wxStdWideString(buf.data(), buf.length()); } #endif #if (!wxUSE_UNICODE || wxUSE_UTF8_LOCALE_ONLY) && wxUSE_STL_BASED_WXSTRING // wxStringImpl is std::string in the encoding we want - operator const std::string&() const { return m_impl; } + #define wxStringToStdStringRetType const std::string& + const std::string& ToStdString() const { return m_impl; } #else // wxStringImpl is either not std::string or needs conversion - operator std::string() const + #define wxStringToStdStringRetType std::string + std::string ToStdString() const { wxScopedCharBuffer buf(mb_str()); return std::string(buf.data(), buf.length()); } #endif -#endif // wxUSE_STL + +#if wxUSE_STD_STRING_CONV_IN_WXSTRING + // Implicit conversions to std::[w]string are not provided by default as + // they conflict with the implicit conversions to "const char/wchar_t *" + // which we use for backwards compatibility but do provide them if + // explicitly requested. + operator wxStringToStdStringRetType() const { return ToStdString(); } + operator wxStringToStdWstringRetType() const { return ToStdWstring(); } +#endif // wxUSE_STD_STRING_CONV_IN_WXSTRING + +#undef wxStringToStdStringRetType +#undef wxStringToStdWstringRetType + +#endif // wxUSE_STD_STRING wxString Clone() const { @@ -1512,14 +1574,14 @@ public: // get last character wxUniChar Last() const { - wxASSERT_MSG( !empty(), _T("wxString: index out of bounds") ); + wxASSERT_MSG( !empty(), wxT("wxString: index out of bounds") ); return *rbegin(); } // get writable last character wxUniCharRef Last() { - wxASSERT_MSG( !empty(), _T("wxString: index out of bounds") ); + wxASSERT_MSG( !empty(), wxT("wxString: index out of bounds") ); return *rbegin(); } @@ -1600,11 +1662,12 @@ public: operator wxCStrData() const { return c_str(); } // the first two operators conflict with operators for conversion to - // std::string and they must be disabled in STL build; the next one only - // makes sense if conversions to char* are also defined and not defining it - // in STL build also helps us to get more clear error messages for the code - // which relies on implicit conversion to char* in STL build -#if !wxUSE_STL + // std::string and they must be disabled if those conversions are enabled; + // the next one only makes sense if conversions to char* are also defined + // and not defining it in STL build also helps us to get more clear error + // messages for the code which relies on implicit conversion to char* in + // STL build +#if !wxUSE_STD_STRING_CONV_IN_WXSTRING operator const char*() const { return c_str(); } operator const wchar_t*() const { return c_str(); } @@ -1612,7 +1675,7 @@ public: // wxWidgets versions: this is the same as conversion to const char * so it // may fail! operator const void*() const { return c_str(); } -#endif // wxUSE_STL +#endif // !wxUSE_STD_STRING_CONV_IN_WXSTRING // identical to c_str(), for MFC compatibility const wxCStrData GetData() const { return c_str(); } @@ -1781,7 +1844,8 @@ public: // version for NUL-terminated data: static wxString From8BitData(const char *data) { return wxString(data); } - const char *To8BitData() const { return c_str(); } + const wxScopedCharBuffer To8BitData() const + { return wxScopedCharBuffer::CreateNonOwned(wx_str(), length()); } #endif // Unicode/ANSI // conversions with (possible) format conversions: have to return a @@ -1962,7 +2026,7 @@ public: { #if WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8 wxASSERT_MSG( s.IsValid(), - _T("did you forget to call UngetWriteBuf()?") ); + wxT("did you forget to call UngetWriteBuf()?") ); #endif append(s); @@ -2056,36 +2120,34 @@ public: // stream-like functions // insert an int into string wxString& operator<<(int i) - { return (*this) << Format(_T("%d"), i); } + { return (*this) << Format(wxT("%d"), i); } // insert an unsigned int into string wxString& operator<<(unsigned int ui) - { return (*this) << Format(_T("%u"), ui); } + { return (*this) << Format(wxT("%u"), ui); } // insert a long into string wxString& operator<<(long l) - { return (*this) << Format(_T("%ld"), l); } + { return (*this) << Format(wxT("%ld"), l); } // insert an unsigned long into string wxString& operator<<(unsigned long ul) - { return (*this) << Format(_T("%lu"), ul); } -#if defined wxLongLong_t && !defined wxLongLongIsLong + { return (*this) << Format(wxT("%lu"), ul); } +#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG // insert a long long if they exist and aren't longs wxString& operator<<(wxLongLong_t ll) { - const wxChar *fmt = _T("%") wxLongLongFmtSpec _T("d"); - return (*this) << Format(fmt, ll); + return (*this) << Format("%" wxLongLongFmtSpec "d", ll); } // insert an unsigned long long wxString& operator<<(wxULongLong_t ull) { - const wxChar *fmt = _T("%") wxLongLongFmtSpec _T("u"); - return (*this) << Format(fmt , ull); + return (*this) << Format("%" wxLongLongFmtSpec "u" , ull); } -#endif // wxLongLong_t && !wxLongLongIsLong +#endif // wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG // insert a float into string wxString& operator<<(float f) - { return (*this) << Format(_T("%f"), f); } + { return (*this) << Format(wxT("%f"), f); } // insert a double into string wxString& operator<<(double d) - { return (*this) << Format(_T("%g"), d); } + { return (*this) << Format(wxT("%g"), d); } // string comparison // case-sensitive comparison (returns a value < 0, = 0 or > 0) @@ -2163,11 +2225,13 @@ public: // get last nCount characters wxString Right(size_t nCount) const; // get all characters before the first occurrence of ch - // (returns the whole string if ch not found) - wxString BeforeFirst(wxUniChar ch) const; + // (returns the whole string if ch not found) and also put everything + // following the first occurrence of ch into rest if it's non-NULL + wxString BeforeFirst(wxUniChar ch, wxString *rest = NULL) const; // get all characters before the last occurrence of ch - // (returns empty string if ch not found) - wxString BeforeLast(wxUniChar ch) const; + // (returns empty string if ch not found) and also put everything + // following the last occurrence of ch into rest if it's non-NULL + wxString BeforeLast(wxUniChar ch, wxString *rest = NULL) const; // get all characters after the first occurrence of ch // (returns empty string if ch not found) wxString AfterFirst(wxUniChar ch) const; @@ -2263,7 +2327,6 @@ public: // convert to a double bool ToDouble(double *val) const; -#if wxUSE_XLOCALE // conversions to numbers using C locale // convert to a signed integer bool ToCLong(long *val, int base = 10) const; @@ -2271,8 +2334,14 @@ public: bool ToCULong(unsigned long *val, int base = 10) const; // convert to a double bool ToCDouble(double *val) const; -#endif - + + // create a string representing the given floating point number with the + // default (like %g) or fixed (if precision >=0) precision + // in the current locale + static wxString FromDouble(double val, int precision = -1); + // in C locale + static wxString FromCDouble(double val, int precision = -1); + #ifndef wxNEEDS_WXSTRING_PRINTF_MIXIN // formatted input/output // as sprintf(), returns the number of characters written or < 0 on error @@ -2427,7 +2496,7 @@ public: CreateConstIterator(last).impl()) { wxASSERT_MSG( first.m_str == last.m_str, - _T("pointers must be into the same string") ); + wxT("pointers must be into the same string") ); } #endif // WXWIN_COMPATIBILITY_STRING_PTR_AS_ITER @@ -2555,9 +2624,21 @@ public: return *this; } + // This is a non-standard-compliant overload taking the first "len" + // characters of the source string. wxString& assign(const wxString& str, size_t len) { +#if wxUSE_STRING_POS_CACHE + // It is legal to pass len > str.length() to wxStringImpl::assign() but + // by restricting it here we save some work for that function so it's not + // really less efficient and, at the same time, ensure that we don't + // cache invalid length. + const size_t lenSrc = str.length(); + if ( len > lenSrc ) + len = lenSrc; + wxSTRING_SET_CACHED_LENGTH(len); +#endif // wxUSE_STRING_POS_CACHE m_impl.assign(str.m_impl, 0, str.LenToImpl(len)); @@ -2599,7 +2680,7 @@ public: wxString& assign(const char *sz, size_t n) { - wxSTRING_SET_CACHED_LENGTH(n); + wxSTRING_INVALIDATE_CACHE(); SubstrBufFromMB str(ImplStr(sz, n)); m_impl.assign(str.data, str.len); @@ -3415,7 +3496,7 @@ private: void DoUngetWriteBuf(size_t nLen) { - wxSTRING_SET_CACHED_LENGTH(nLen); + wxSTRING_INVALIDATE_CACHE(); m_impl.DoUngetWriteBuf(nLen); } @@ -3576,7 +3657,7 @@ private: }; #ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN - #pragma warning (default:4275) + #pragma warning (pop) #endif // string iterator operators that satisfy STL Random Access Iterator @@ -4023,6 +4104,21 @@ inline bool operator!=(const wxString& s, const wxUniCharRef& c) { return !s.IsS inline bool operator!=(const wxString& s, char c) { return !s.IsSameAs(c); } inline bool operator!=(const wxString& s, wchar_t c) { return !s.IsSameAs(c); } + +// wxString iterators comparisons +inline bool wxString::iterator::operator==(const const_iterator& i) const + { return i == *this; } +inline bool wxString::iterator::operator!=(const const_iterator& i) const + { return i != *this; } +inline bool wxString::iterator::operator<(const const_iterator& i) const + { return i > *this; } +inline bool wxString::iterator::operator>(const const_iterator& i) const + { return i < *this; } +inline bool wxString::iterator::operator<=(const const_iterator& i) const + { return i >= *this; } +inline bool wxString::iterator::operator>=(const const_iterator& i) const + { return i <= *this; } + // comparison with C string in Unicode build #if wxUSE_UNICODE @@ -4164,7 +4260,7 @@ inline const wxStringCharType *wxCStrData::AsInternal() const inline wxUniChar wxCStrData::operator*() const { if ( m_str->empty() ) - return wxUniChar(_T('\0')); + return wxUniChar(wxT('\0')); else return (*m_str)[m_offset]; }