X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6becc1e617c65cde68e7e6fcdad27e366bf51792..6968a3b87cee46f5c5af9b46e1ef97f17133cef7:/include/wx/string.h diff --git a/include/wx/string.h b/include/wx/string.h index cb8d6bccfe..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 @@ -1153,6 +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; @@ -1345,12 +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) {} @@ -1368,10 +1377,8 @@ 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* but we still - // provide explicit conversions to std::[w]string for convenience in any case + // 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: @@ -1383,7 +1390,13 @@ public: #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 @@ -1402,13 +1415,14 @@ public: } #endif -#if wxUSE_STL - // In wxUSE_STL case we also provide implicit conversions as there is no - // ambiguity with the const char/wchar_t* ones as they are disabled in this - // build (for consistency with std::basic_string<>) +#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_STL +#endif // wxUSE_STD_STRING_CONV_IN_WXSTRING #undef wxStringToStdStringRetType #undef wxStringToStdWstringRetType @@ -1648,11 +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(); } @@ -1660,7 +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(); } @@ -2115,7 +2130,7 @@ public: // insert an unsigned long into string wxString& operator<<(unsigned long ul) { return (*this) << Format(wxT("%lu"), ul); } -#if defined wxLongLong_t && !defined wxLongLongIsLong +#ifdef wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG // insert a long long if they exist and aren't longs wxString& operator<<(wxLongLong_t ll) { @@ -2126,7 +2141,7 @@ public: { 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(wxT("%f"), f); } @@ -2320,12 +2335,12 @@ public: // convert to a double bool ToCDouble(double *val) const; - // create a string representing the given floating point number + // 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) - { return wxString::Format(wxS("%g"), val); } + static wxString FromDouble(double val, int precision = -1); // in C locale - static wxString FromCDouble(double val); + static wxString FromCDouble(double val, int precision = -1); #ifndef wxNEEDS_WXSTRING_PRINTF_MIXIN // formatted input/output @@ -2609,9 +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)); @@ -2653,7 +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); @@ -3469,7 +3496,7 @@ private: void DoUngetWriteBuf(size_t nLen) { - wxSTRING_SET_CACHED_LENGTH(nLen); + wxSTRING_INVALIDATE_CACHE(); m_impl.DoUngetWriteBuf(nLen); }