b8d3b37c9e
Newer standard library headers should only be included when the compiler is targetting that standard, otherwise some compilers (like MSVC) will warn that you are using a newer C++ include on an older version.
2184 lines
62 KiB
C++
2184 lines
62 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/string.cpp
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// Purpose: wxString class
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// Author: Vadim Zeitlin, Ryan Norton
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// Modified by:
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// Created: 29/01/98
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// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// (c) 2004 Ryan Norton <wxprojects@comcast.net>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// headers, declarations, constants
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// ===========================================================================
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifndef WX_PRECOMP
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#include "wx/string.h"
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#include "wx/wxcrtvararg.h"
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#include "wx/log.h"
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#endif
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#include <ctype.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include "wx/uilocale.h"
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#include "wx/vector.h"
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#include "wx/xlocale.h"
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#ifdef __WINDOWS__
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#include "wx/msw/wrapwin.h"
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#endif // __WINDOWS__
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#if wxUSE_STD_IOSTREAM
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#include <sstream>
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#endif
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// define a function declared in wx/buffer.h here as we don't have buffer.cpp
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// and don't want to add it just because of this simple function
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namespace wxPrivate
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{
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// wxXXXBuffer classes can be (implicitly) used during global statics
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// initialization so wrap the status UntypedBufferData variable in a function
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// to make it safe to access it even before all global statics are initialized
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UntypedBufferData *GetUntypedNullData()
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{
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static UntypedBufferData s_untypedNullData(nullptr, 0);
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return &s_untypedNullData;
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}
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} // namespace wxPrivate
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// ---------------------------------------------------------------------------
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// static class variables definition
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// ---------------------------------------------------------------------------
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//According to STL _must_ be a -1 size_t
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const size_t wxString::npos = (size_t) -1;
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// FIXME-UTF8: get rid of this, have only one wxEmptyString
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#if wxUSE_UNICODE_UTF8
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const wxStringCharType WXDLLIMPEXP_BASE *wxEmptyStringImpl = "";
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#endif
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const wxChar WXDLLIMPEXP_BASE *wxEmptyString = wxT("");
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#if wxUSE_STRING_POS_CACHE
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/* static */
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wxString::Cache& wxString::GetCache()
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{
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static wxTHREAD_SPECIFIC_DECL Cache s_cache;
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return s_cache;
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}
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// gdb seems to be unable to display thread-local variables correctly, at least
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// not my 6.4.98 version under amd64, so provide this debugging helper to do it
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#if wxDEBUG_LEVEL >= 2
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struct wxStrCacheDumper
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{
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static void ShowAll()
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{
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puts("*** wxString cache dump:");
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for ( unsigned n = 0; n < wxString::Cache::SIZE; n++ )
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{
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const wxString::Cache::Element&
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c = wxString::GetCacheBegin()[n];
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printf("\t%u%s\t%p: pos=(%lu, %lu), len=%ld\n",
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n,
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n == wxString::LastUsedCacheElement() ? " [*]" : "",
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c.str,
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(unsigned long)c.pos,
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(unsigned long)c.impl,
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(long)c.len);
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}
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}
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};
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void wxDumpStrCache() { wxStrCacheDumper::ShowAll(); }
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#endif // wxDEBUG_LEVEL >= 2
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#ifdef wxPROFILE_STRING_CACHE
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wxString::CacheStats wxString::ms_cacheStats;
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struct wxStrCacheStatsDumper
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{
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~wxStrCacheStatsDumper()
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{
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const wxString::CacheStats& stats = wxString::ms_cacheStats;
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if ( stats.postot )
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{
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puts("*** wxString cache statistics:");
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printf("\tTotal non-trivial calls to PosToImpl(): %u\n",
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stats.postot);
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printf("\tHits %u (of which %u not used) or %.2f%%\n",
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stats.poshits,
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stats.mishits,
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100.*float(stats.poshits - stats.mishits)/stats.postot);
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printf("\tAverage position requested: %.2f\n",
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float(stats.sumpos) / stats.postot);
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printf("\tAverage offset after cached hint: %.2f\n",
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float(stats.sumofs) / stats.postot);
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}
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if ( stats.lentot )
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{
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printf("\tNumber of calls to length(): %u, hits=%.2f%%\n",
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stats.lentot, 100.*float(stats.lenhits)/stats.lentot);
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}
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}
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};
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static wxStrCacheStatsDumper s_showCacheStats;
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#endif // wxPROFILE_STRING_CACHE
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#endif // wxUSE_STRING_POS_CACHE
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// ----------------------------------------------------------------------------
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// global functions
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// ----------------------------------------------------------------------------
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#if wxUSE_STD_IOSTREAM
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#include <iostream>
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std::ostream& operator<<(std::ostream& os, const wxCStrData& str)
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{
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#if !wxUSE_UNICODE_UTF8
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return os << wxConvWhateverWorks.cWX2MB(str);
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#else
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return os << str.AsInternal();
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#endif
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}
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std::ostream& operator<<(std::ostream& os, const wxString& str)
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{
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return os << str.c_str();
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}
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std::ostream& operator<<(std::ostream& os, const wxScopedCharBuffer& str)
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{
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return os << str.data();
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}
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std::ostream& operator<<(std::ostream& os, const wxScopedWCharBuffer& str)
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{
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// There is no way to write wide character data to std::ostream directly,
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// but we need to define this operator for compatibility, as we provided it
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// since basically always, even if it never worked correctly before. So do
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// the only reasonable thing and output it as UTF-8.
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return os << wxConvWhateverWorks.cWC2MB(str.data());
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}
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#if defined(HAVE_WOSTREAM)
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std::wostream& operator<<(std::wostream& wos, const wxString& str)
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{
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return wos << str.wc_str();
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}
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std::wostream& operator<<(std::wostream& wos, const wxCStrData& str)
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{
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return wos << str.AsWChar();
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}
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std::wostream& operator<<(std::wostream& wos, const wxScopedWCharBuffer& str)
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{
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return wos << str.data();
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}
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#endif // defined(HAVE_WOSTREAM)
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#endif // wxUSE_STD_IOSTREAM
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// ===========================================================================
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// wxString class core
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// ===========================================================================
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#if wxUSE_UNICODE_UTF8
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void wxString::PosLenToImpl(size_t pos, size_t len,
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size_t *implPos, size_t *implLen) const
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{
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if ( pos == npos )
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{
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*implPos = npos;
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}
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else // have valid start position
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{
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const const_iterator b = GetIterForNthChar(pos);
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*implPos = wxStringImpl::const_iterator(b.impl()) - m_impl.begin();
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if ( len == npos )
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{
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*implLen = npos;
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}
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else // have valid length too
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{
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// we need to handle the case of length specifying a substring
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// going beyond the end of the string, just as std::string does
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const const_iterator e(end());
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const_iterator i(b);
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while ( len && i < e )
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{
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++i;
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--len;
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}
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*implLen = i.impl() - b.impl();
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}
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}
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}
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#endif // wxUSE_UNICODE_UTF8
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// ----------------------------------------------------------------------------
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// wxCStrData converted strings caching
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// ----------------------------------------------------------------------------
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// FIXME-UTF8: temporarily disabled because it doesn't work with global
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// string objects; re-enable after fixing this bug and benchmarking
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// performance to see if using a hash is a good idea at all
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#if 0
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// For backward compatibility reasons, it must be possible to assign the value
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// returned by wxString::c_str() to a char* or wchar_t* variable and work with
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// it. Returning wxCharBuffer from (const char*)c_str() wouldn't do the trick,
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// because the memory would be freed immediately, but it has to be valid as long
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// as the string is not modified, so that code like this still works:
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//
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// const wxChar *s = str.c_str();
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// while ( s ) { ... }
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// FIXME-UTF8: not thread safe!
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// FIXME-UTF8: we currently clear the cached conversion only when the string is
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// destroyed, but we should do it when the string is modified, to
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// keep memory usage down
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// FIXME-UTF8: we do the conversion every time As[W]Char() is called, but if we
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// invalidated the cache on every change, we could keep the previous
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// conversion
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// FIXME-UTF8: add tracing of usage of these two methods - new code is supposed
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// to use mb_str() or wc_str() instead of (const [w]char*)c_str()
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template<typename T>
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static inline void DeleteStringFromConversionCache(T& hash, const wxString *s)
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{
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typename T::iterator i = hash.find(wxConstCast(s, wxString));
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if ( i != hash.end() )
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{
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free(i->second);
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hash.erase(i);
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}
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}
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// NB: non-STL implementation doesn't compile with "const wxString*" key type,
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// so we have to use wxString* here and const-cast when used
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WX_DECLARE_HASH_MAP(wxString*, char*, wxPointerHash, wxPointerEqual,
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wxStringCharConversionCache);
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static wxStringCharConversionCache gs_stringsCharCache;
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const char* wxCStrData::AsChar() const
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{
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// remove previously cache value, if any (see FIXMEs above):
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DeleteStringFromConversionCache(gs_stringsCharCache, m_str);
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// convert the string and keep it:
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const char *s = gs_stringsCharCache[wxConstCast(m_str, wxString)] =
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m_str->mb_str().release();
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return s + m_offset;
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}
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#if !wxUSE_UNICODE_WCHAR
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WX_DECLARE_HASH_MAP(wxString*, wchar_t*, wxPointerHash, wxPointerEqual,
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wxStringWCharConversionCache);
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static wxStringWCharConversionCache gs_stringsWCharCache;
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const wchar_t* wxCStrData::AsWChar() const
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{
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// remove previously cache value, if any (see FIXMEs above):
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DeleteStringFromConversionCache(gs_stringsWCharCache, m_str);
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// convert the string and keep it:
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const wchar_t *s = gs_stringsWCharCache[wxConstCast(m_str, wxString)] =
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m_str->wc_str().release();
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return s + m_offset;
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}
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#endif // !wxUSE_UNICODE_WCHAR
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wxString::~wxString()
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{
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// FIXME-UTF8: do this only if locale is not UTF8 if wxUSE_UNICODE_UTF8
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DeleteStringFromConversionCache(gs_stringsCharCache, this);
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#if !wxUSE_UNICODE_WCHAR
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DeleteStringFromConversionCache(gs_stringsWCharCache, this);
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#endif
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}
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#endif
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// ===========================================================================
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// wxString class core
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// construction and conversion
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// ---------------------------------------------------------------------------
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#if wxUSE_UNICODE_WCHAR
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/* static */
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wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
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const wxMBConv& conv)
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{
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// anything to do?
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if ( !psz || nLength == 0 )
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return SubstrBufFromMB(wxWCharBuffer(L""), 0);
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if ( nLength == npos )
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nLength = wxNO_LEN;
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size_t wcLen;
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wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
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if ( !wcLen )
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return SubstrBufFromMB(wxWCharBuffer(L""), 0);
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else
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return SubstrBufFromMB(wcBuf, wcLen);
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}
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#endif // wxUSE_UNICODE_WCHAR
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#if wxUSE_UNICODE_UTF8
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/* static */
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wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
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const wxMBConv& conv)
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{
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// anything to do?
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if ( !psz || nLength == 0 )
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return SubstrBufFromMB(wxCharBuffer(""), 0);
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// if psz is already in UTF-8, we don't have to do the roundtrip to
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// wchar_t* and back:
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if ( conv.IsUTF8() )
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{
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// we need to validate the input because UTF8 iterators assume valid
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// UTF-8 sequence and psz may be invalid:
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if ( wxStringOperations::IsValidUtf8String(psz, nLength) )
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{
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// we must pass the real string length to SubstrBufFromMB ctor
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if ( nLength == npos )
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nLength = psz ? strlen(psz) : 0;
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return SubstrBufFromMB(wxScopedCharBuffer::CreateNonOwned(psz, nLength),
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nLength);
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}
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// else: do the roundtrip through wchar_t*
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}
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if ( nLength == npos )
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nLength = wxNO_LEN;
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// first convert to wide string:
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size_t wcLen;
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wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
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if ( !wcLen )
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return SubstrBufFromMB(wxCharBuffer(""), 0);
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// and then to UTF-8:
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SubstrBufFromMB buf(ConvertStr(wcBuf, wcLen, wxMBConvStrictUTF8()));
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// widechar -> UTF-8 conversion isn't supposed to ever fail:
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wxASSERT_MSG( buf.data, wxT("conversion to UTF-8 failed") );
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return buf;
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}
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#endif // wxUSE_UNICODE_UTF8
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#if wxUSE_UNICODE_UTF8
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/* static */
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wxString::SubstrBufFromWC wxString::ConvertStr(const wchar_t *pwz, size_t nLength,
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const wxMBConv& conv)
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{
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// anything to do?
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if ( !pwz || nLength == 0 )
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return SubstrBufFromWC(wxCharBuffer(""), 0);
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if ( nLength == npos )
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nLength = wxNO_LEN;
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size_t mbLen;
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wxScopedCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
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if ( !mbLen )
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return SubstrBufFromWC(wxCharBuffer(""), 0);
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else
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return SubstrBufFromWC(mbBuf, mbLen);
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}
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#endif // wxUSE_UNICODE_UTF8
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// This std::string::c_str()-like method returns a wide char pointer to string
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// contents. In wxUSE_UNICODE_WCHAR case it is trivial as it can simply return
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// a pointer to the internal representation. Otherwise a conversion is required
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// and it returns a temporary buffer.
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//
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// However for compatibility with c_str() and to avoid breaking existing code
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// doing
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//
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// for ( const wchar_t *p = s.wc_str(); *p; p++ )
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// ... use *p...
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//
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// we actually need to ensure that the returned buffer is _not_ temporary and
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// so we use wxString::m_convertedToWChar to store the returned data
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#if !wxUSE_UNICODE_WCHAR
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const wchar_t *wxString::AsWChar(const wxMBConv& conv) const
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{
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const char * const strMB = m_impl.c_str();
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const size_t lenMB = m_impl.length();
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// find out the size of the buffer needed
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const size_t lenWC = conv.ToWChar(nullptr, 0, strMB, lenMB);
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if ( lenWC == wxCONV_FAILED )
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return nullptr;
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// keep the same buffer if the string size didn't change: this is not only
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// an optimization but also ensure that code which modifies string
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// character by character (without changing its length) can continue to use
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// the pointer returned by a previous wc_str() call even after changing the
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// string
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// TODO-UTF8: we could check for ">" instead of "!=" here as this would
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// allow to save on buffer reallocations but at the cost of
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// consuming (even) more memory, we should benchmark this to
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// determine if it's worth doing
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if ( !m_convertedToWChar.m_str || lenWC != m_convertedToWChar.m_len )
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{
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if ( !const_cast<wxString *>(this)->m_convertedToWChar.Extend(lenWC) )
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return nullptr;
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}
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// finally do convert
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m_convertedToWChar.m_str[lenWC] = L'\0';
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if ( conv.ToWChar(m_convertedToWChar.m_str, lenWC,
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strMB, lenMB) == wxCONV_FAILED )
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return nullptr;
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return m_convertedToWChar.m_str;
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}
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#endif // !wxUSE_UNICODE_WCHAR
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// Same thing for mb_str() which returns a normal char pointer to string
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// contents: this always requires converting it to the specified encoding
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// except if we need to convert to UTF-8 and this is what we already use
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// internally.
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const char *wxString::AsChar(const wxMBConv& conv) const
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{
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#if wxUSE_UNICODE_UTF8
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if ( conv.IsUTF8() )
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return m_impl.c_str();
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const wchar_t * const strWC = AsWChar(wxMBConvStrictUTF8());
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const size_t lenWC = m_convertedToWChar.m_len;
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#else // wxUSE_UNICODE_WCHAR
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const wchar_t * const strWC = m_impl.c_str();
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const size_t lenWC = m_impl.length();
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#endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
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const size_t lenMB = conv.FromWChar(nullptr, 0, strWC, lenWC);
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if ( lenMB == wxCONV_FAILED )
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return nullptr;
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if ( !m_convertedToChar.m_str || lenMB != m_convertedToChar.m_len )
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{
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if ( !const_cast<wxString *>(this)->m_convertedToChar.Extend(lenMB) )
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return nullptr;
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}
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m_convertedToChar.m_str[lenMB] = '\0';
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if ( conv.FromWChar(m_convertedToChar.m_str, lenMB,
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strWC, lenWC) == wxCONV_FAILED )
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return nullptr;
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return m_convertedToChar.m_str;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// data access
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// all functions are inline in string.h
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// concatenation operators
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/*
|
|
* concatenation functions come in 5 flavours:
|
|
* string + string
|
|
* char + string and string + char
|
|
* C str + string and string + C str
|
|
*/
|
|
|
|
wxString operator+(const wxString& str1, const wxString& str2)
|
|
{
|
|
wxString s = str1;
|
|
s += str2;
|
|
|
|
return s;
|
|
}
|
|
|
|
wxString operator+(const wxString& str, wxUniChar ch)
|
|
{
|
|
wxString s = str;
|
|
s += ch;
|
|
|
|
return s;
|
|
}
|
|
|
|
wxString operator+(wxUniChar ch, const wxString& str)
|
|
{
|
|
wxString s = ch;
|
|
s += str;
|
|
|
|
return s;
|
|
}
|
|
|
|
wxString operator+(const wxString& str, const char *psz)
|
|
{
|
|
wxString s;
|
|
if ( !s.Alloc(strlen(psz) + str.length()) ) {
|
|
wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
|
|
}
|
|
s += str;
|
|
s += psz;
|
|
|
|
return s;
|
|
}
|
|
|
|
wxString operator+(const wxString& str, const wchar_t *pwz)
|
|
{
|
|
wxString s;
|
|
if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
|
|
wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
|
|
}
|
|
s += str;
|
|
s += pwz;
|
|
|
|
return s;
|
|
}
|
|
|
|
wxString operator+(const char *psz, const wxString& str)
|
|
{
|
|
wxString s;
|
|
if ( !s.Alloc(strlen(psz) + str.length()) ) {
|
|
wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
|
|
}
|
|
s = psz;
|
|
s += str;
|
|
|
|
return s;
|
|
}
|
|
|
|
wxString operator+(const wchar_t *pwz, const wxString& str)
|
|
{
|
|
wxString s;
|
|
if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
|
|
wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
|
|
}
|
|
s = pwz;
|
|
s += str;
|
|
|
|
return s;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// string comparison
|
|
// ---------------------------------------------------------------------------
|
|
|
|
bool wxString::IsSameAs(wxUniChar c, bool compareWithCase) const
|
|
{
|
|
return (length() == 1) && (compareWithCase ? GetChar(0u) == c
|
|
: wxToupper(GetChar(0u)) == wxToupper(c));
|
|
}
|
|
|
|
// NB: Comparison code works with UTF-8 encoded strings too, thanks to UTF-8's
|
|
// design which allows us to sort strings in characters code point order by
|
|
// sorting the byte sequence in byte values order (i.e. what strcmp() and
|
|
// memcmp() do).
|
|
|
|
int wxString::compare(const wxString& str) const
|
|
{
|
|
return m_impl.compare(str.m_impl);
|
|
}
|
|
|
|
int wxString::compare(size_t nStart, size_t nLen,
|
|
const wxString& str) const
|
|
{
|
|
size_t pos, len;
|
|
PosLenToImpl(nStart, nLen, &pos, &len);
|
|
return m_impl.compare(pos, len, str.m_impl);
|
|
}
|
|
|
|
int wxString::compare(size_t nStart, size_t nLen,
|
|
const wxString& str,
|
|
size_t nStart2, size_t nLen2) const
|
|
{
|
|
size_t pos, len;
|
|
PosLenToImpl(nStart, nLen, &pos, &len);
|
|
|
|
size_t pos2, len2;
|
|
str.PosLenToImpl(nStart2, nLen2, &pos2, &len2);
|
|
|
|
return m_impl.compare(pos, len, str.m_impl, pos2, len2);
|
|
}
|
|
|
|
int wxString::compare(const char* sz) const
|
|
{
|
|
return m_impl.compare(ImplStr(sz));
|
|
}
|
|
|
|
int wxString::compare(const wchar_t* sz) const
|
|
{
|
|
return m_impl.compare(ImplStr(sz));
|
|
}
|
|
|
|
int wxString::compare(size_t nStart, size_t nLen,
|
|
const char* sz, size_t nCount) const
|
|
{
|
|
size_t pos, len;
|
|
PosLenToImpl(nStart, nLen, &pos, &len);
|
|
|
|
SubstrBufFromMB str(ImplStr(sz, nCount));
|
|
|
|
return m_impl.compare(pos, len, str.data, str.len);
|
|
}
|
|
|
|
int wxString::compare(size_t nStart, size_t nLen,
|
|
const wchar_t* sz, size_t nCount) const
|
|
{
|
|
size_t pos, len;
|
|
PosLenToImpl(nStart, nLen, &pos, &len);
|
|
|
|
SubstrBufFromWC str(ImplStr(sz, nCount));
|
|
|
|
return m_impl.compare(pos, len, str.data, str.len);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// find_{first,last}_[not]_of functions
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#if wxUSE_UNICODE_UTF8
|
|
|
|
// NB: All these functions are implemented with the argument always being
|
|
// wchar_t*, even in UTF-8 build in which the native string representation
|
|
// is char*. This is because we couldn't use memchr() to determine if a
|
|
// character is in a set encoded as UTF-8.
|
|
|
|
size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
|
|
{
|
|
return find_first_of(sz, nStart, wxStrlen(sz));
|
|
}
|
|
|
|
size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
|
|
{
|
|
return find_first_not_of(sz, nStart, wxStrlen(sz));
|
|
}
|
|
|
|
size_t wxString::find_first_of(const wxChar* sz, size_t nStart, size_t n) const
|
|
{
|
|
wxASSERT_MSG( nStart <= length(), wxT("invalid index") );
|
|
|
|
size_t idx = nStart;
|
|
for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
|
|
{
|
|
if ( wxTmemchr(sz, *i, n) )
|
|
return idx;
|
|
}
|
|
|
|
return npos;
|
|
}
|
|
|
|
size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart, size_t n) const
|
|
{
|
|
wxASSERT_MSG( nStart <= length(), wxT("invalid index") );
|
|
|
|
size_t idx = nStart;
|
|
for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
|
|
{
|
|
if ( !wxTmemchr(sz, *i, n) )
|
|
return idx;
|
|
}
|
|
|
|
return npos;
|
|
}
|
|
|
|
|
|
size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
|
|
{
|
|
return find_last_of(sz, nStart, wxStrlen(sz));
|
|
}
|
|
|
|
size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
|
|
{
|
|
return find_last_not_of(sz, nStart, wxStrlen(sz));
|
|
}
|
|
|
|
size_t wxString::find_last_of(const wxChar* sz, size_t nStart, size_t n) const
|
|
{
|
|
size_t len = length();
|
|
|
|
if ( nStart == npos )
|
|
{
|
|
nStart = len - 1;
|
|
}
|
|
else
|
|
{
|
|
wxASSERT_MSG( nStart <= len, wxT("invalid index") );
|
|
}
|
|
|
|
size_t idx = nStart;
|
|
for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
|
|
i != rend(); --idx, ++i )
|
|
{
|
|
if ( wxTmemchr(sz, *i, n) )
|
|
return idx;
|
|
}
|
|
|
|
return npos;
|
|
}
|
|
|
|
size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart, size_t n) const
|
|
{
|
|
size_t len = length();
|
|
|
|
if ( nStart == npos )
|
|
{
|
|
nStart = len - 1;
|
|
}
|
|
else
|
|
{
|
|
wxASSERT_MSG( nStart <= len, wxT("invalid index") );
|
|
}
|
|
|
|
size_t idx = nStart;
|
|
for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
|
|
i != rend(); --idx, ++i )
|
|
{
|
|
if ( !wxTmemchr(sz, *i, n) )
|
|
return idx;
|
|
}
|
|
|
|
return npos;
|
|
}
|
|
|
|
size_t wxString::find_first_not_of(wxUniChar ch, size_t nStart) const
|
|
{
|
|
wxASSERT_MSG( nStart <= length(), wxT("invalid index") );
|
|
|
|
size_t idx = nStart;
|
|
for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
|
|
{
|
|
if ( *i != ch )
|
|
return idx;
|
|
}
|
|
|
|
return npos;
|
|
}
|
|
|
|
size_t wxString::find_last_not_of(wxUniChar ch, size_t nStart) const
|
|
{
|
|
size_t len = length();
|
|
|
|
if ( nStart == npos )
|
|
{
|
|
nStart = len - 1;
|
|
}
|
|
else
|
|
{
|
|
wxASSERT_MSG( nStart <= len, wxT("invalid index") );
|
|
}
|
|
|
|
size_t idx = nStart;
|
|
for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
|
|
i != rend(); --idx, ++i )
|
|
{
|
|
if ( *i != ch )
|
|
return idx;
|
|
}
|
|
|
|
return npos;
|
|
}
|
|
|
|
// the functions above were implemented for wchar_t* arguments in Unicode
|
|
// build; below are implementations for the char* arguments
|
|
size_t wxString::find_first_of(const char* sz, size_t nStart) const
|
|
{ return find_first_of(wxConvLibc.cMB2WC(sz), nStart); }
|
|
|
|
size_t wxString::find_first_of(const char* sz, size_t nStart,
|
|
size_t n) const
|
|
{ return find_first_of(wxConvLibc.cMB2WC(sz, n, nullptr), nStart, n); }
|
|
size_t wxString::find_last_of(const char* sz, size_t nStart) const
|
|
{ return find_last_of(wxConvLibc.cMB2WC(sz), nStart); }
|
|
size_t wxString::find_last_of(const char* sz, size_t nStart,
|
|
size_t n) const
|
|
{ return find_last_of(wxConvLibc.cMB2WC(sz, n, nullptr), nStart, n); }
|
|
size_t wxString::find_first_not_of(const char* sz, size_t nStart) const
|
|
{ return find_first_not_of(wxConvLibc.cMB2WC(sz), nStart); }
|
|
size_t wxString::find_first_not_of(const char* sz, size_t nStart,
|
|
size_t n) const
|
|
{ return find_first_not_of(wxConvLibc.cMB2WC(sz, n, nullptr), nStart, n); }
|
|
size_t wxString::find_last_not_of(const char* sz, size_t nStart) const
|
|
{ return find_last_not_of(wxConvLibc.cMB2WC(sz), nStart); }
|
|
size_t wxString::find_last_not_of(const char* sz, size_t nStart,
|
|
size_t n) const
|
|
{ return find_last_not_of(wxConvLibc.cMB2WC(sz, n, nullptr), nStart, n); }
|
|
|
|
#endif // wxUSE_UNICODE_UTF8
|
|
|
|
// ===========================================================================
|
|
// other common string functions
|
|
// ===========================================================================
|
|
|
|
int wxString::CmpNoCase(const wxString& s) const
|
|
{
|
|
#if !wxUSE_UNICODE_UTF8
|
|
// We compare NUL-delimited chunks of the strings inside the loop. We will
|
|
// do as many iterations as there are embedded NULs in the string, i.e.
|
|
// usually we will run it just once.
|
|
|
|
typedef const wxStringImpl::value_type *pchar_type;
|
|
const pchar_type thisBegin = m_impl.c_str();
|
|
const pchar_type thatBegin = s.m_impl.c_str();
|
|
|
|
const pchar_type thisEnd = thisBegin + m_impl.length();
|
|
const pchar_type thatEnd = thatBegin + s.m_impl.length();
|
|
|
|
pchar_type thisCur = thisBegin;
|
|
pchar_type thatCur = thatBegin;
|
|
|
|
int rc;
|
|
for ( ;; )
|
|
{
|
|
// Compare until the next NUL, if the strings differ this is the final
|
|
// result.
|
|
rc = wxStricmp(thisCur, thatCur);
|
|
if ( rc )
|
|
break;
|
|
|
|
const size_t lenChunk = wxStrlen(thisCur);
|
|
thisCur += lenChunk;
|
|
thatCur += lenChunk;
|
|
|
|
// Skip all the NULs as wxStricmp() doesn't handle them.
|
|
for ( ; !*thisCur; thisCur++, thatCur++ )
|
|
{
|
|
// Check if we exhausted either of the strings.
|
|
if ( thisCur == thisEnd )
|
|
{
|
|
// This one is exhausted, is the other one too?
|
|
return thatCur == thatEnd ? 0 : -1;
|
|
}
|
|
|
|
if ( thatCur == thatEnd )
|
|
{
|
|
// Because of the test above we know that this one is not
|
|
// exhausted yet so it's greater than the other one that is.
|
|
return 1;
|
|
}
|
|
|
|
if ( *thatCur )
|
|
{
|
|
// Anything non-NUL is greater than NUL.
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
#else // wxUSE_UNICODE_UTF8
|
|
// CRT functions can't be used for case-insensitive comparison of UTF-8
|
|
// strings so do it in the naive, simple and inefficient way.
|
|
|
|
// FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
|
|
const_iterator i1 = begin();
|
|
const_iterator end1 = end();
|
|
const_iterator i2 = s.begin();
|
|
const_iterator end2 = s.end();
|
|
|
|
for ( ; i1 != end1 && i2 != end2; ++i1, ++i2 )
|
|
{
|
|
wxUniChar lower1 = (wxChar)wxTolower(*i1);
|
|
wxUniChar lower2 = (wxChar)wxTolower(*i2);
|
|
if ( lower1 != lower2 )
|
|
return lower1 < lower2 ? -1 : 1;
|
|
}
|
|
|
|
size_t len1 = length();
|
|
size_t len2 = s.length();
|
|
|
|
if ( len1 < len2 )
|
|
return -1;
|
|
else if ( len1 > len2 )
|
|
return 1;
|
|
return 0;
|
|
#endif // !wxUSE_UNICODE_UTF8/wxUSE_UNICODE_UTF8
|
|
}
|
|
|
|
|
|
wxString wxString::FromAscii(const char *ascii, size_t len)
|
|
{
|
|
wxString res;
|
|
|
|
if (!ascii || len == 0)
|
|
return res;
|
|
|
|
{
|
|
wxStringInternalBuffer buf(res, len);
|
|
wxStringCharType *dest = buf;
|
|
|
|
for ( ; len > 0; --len )
|
|
{
|
|
unsigned char c = (unsigned char)*ascii++;
|
|
wxASSERT_MSG( c < 0x80,
|
|
wxT("Non-ASCII value passed to FromAscii().") );
|
|
|
|
*dest++ = static_cast<wxStringCharType>(c);
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
wxString wxString::FromAscii(const char *ascii)
|
|
{
|
|
return FromAscii(ascii, wxStrlen(ascii));
|
|
}
|
|
|
|
wxString wxString::FromAscii(char ascii)
|
|
{
|
|
// What do we do with '\0' ?
|
|
|
|
unsigned char c = (unsigned char)ascii;
|
|
|
|
wxASSERT_MSG( c < 0x80, wxT("Non-ASCII value passed to FromAscii().") );
|
|
|
|
// NB: the cast to wchar_t causes interpretation of 'ascii' as Latin1 value
|
|
return wxString(wxUniChar((wchar_t)c));
|
|
}
|
|
|
|
const wxScopedCharBuffer wxString::ToAscii(char replaceWith) const
|
|
{
|
|
// this will allocate enough space for the terminating NUL too
|
|
wxCharBuffer buffer(length());
|
|
char *dest = buffer.data();
|
|
|
|
for ( const_iterator i = begin(); i != end(); ++i )
|
|
{
|
|
wxUniChar c(*i);
|
|
// FIXME-UTF8: unify substituted char ('_') with wxUniChar ('?')
|
|
*dest++ = c.IsAscii() ? (char)c : replaceWith;
|
|
|
|
// the output string can't have embedded NULs anyhow, so we can safely
|
|
// stop at first of them even if we do have any
|
|
if ( !c )
|
|
break;
|
|
}
|
|
|
|
return buffer;
|
|
}
|
|
|
|
// extract string of length nCount starting at nFirst
|
|
wxString wxString::Mid(size_t nFirst, size_t nCount) const
|
|
{
|
|
size_t nLen = length();
|
|
|
|
// default value of nCount is npos and means "till the end"
|
|
if ( nCount == npos )
|
|
{
|
|
nCount = nLen - nFirst;
|
|
}
|
|
|
|
// out-of-bounds requests return sensible things
|
|
if ( nFirst > nLen )
|
|
{
|
|
// AllocCopy() will return empty string
|
|
return wxEmptyString;
|
|
}
|
|
|
|
if ( nCount > nLen - nFirst )
|
|
{
|
|
nCount = nLen - nFirst;
|
|
}
|
|
|
|
wxString dest(*this, nFirst, nCount);
|
|
if ( dest.length() != nCount )
|
|
{
|
|
wxFAIL_MSG( wxT("out of memory in wxString::Mid") );
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
// check that the string starts with prefix and return the rest of the string
|
|
// in the provided pointer if it is not null, otherwise return false
|
|
bool wxString::StartsWith(const wxString& prefix, wxString *rest) const
|
|
{
|
|
if ( compare(0, prefix.length(), prefix) != 0 )
|
|
return false;
|
|
|
|
if ( rest )
|
|
{
|
|
// put the rest of the string into provided pointer
|
|
rest->assign(*this, prefix.length(), npos);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
// check that the string ends with suffix and return the rest of it in the
|
|
// provided pointer if it is not null, otherwise return false
|
|
bool wxString::EndsWith(const wxString& suffix, wxString *rest) const
|
|
{
|
|
int start = length() - suffix.length();
|
|
|
|
if ( start < 0 || compare(start, npos, suffix) != 0 )
|
|
return false;
|
|
|
|
if ( rest )
|
|
{
|
|
// put the rest of the string into provided pointer
|
|
rest->assign(*this, 0, start);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
// extract nCount last (rightmost) characters
|
|
wxString wxString::Right(size_t nCount) const
|
|
{
|
|
if ( nCount > length() )
|
|
nCount = length();
|
|
|
|
wxString dest(*this, length() - nCount, nCount);
|
|
if ( dest.length() != nCount ) {
|
|
wxFAIL_MSG( wxT("out of memory in wxString::Right") );
|
|
}
|
|
return dest;
|
|
}
|
|
|
|
// get all characters after the last occurrence of ch
|
|
// (returns the whole string if ch not found)
|
|
wxString wxString::AfterLast(wxUniChar ch) const
|
|
{
|
|
wxString str;
|
|
int iPos = Find(ch, true);
|
|
if ( iPos == wxNOT_FOUND )
|
|
str = *this;
|
|
else
|
|
str.assign(*this, iPos + 1, npos);
|
|
|
|
return str;
|
|
}
|
|
|
|
// extract nCount first (leftmost) characters
|
|
wxString wxString::Left(size_t nCount) const
|
|
{
|
|
if ( nCount > length() )
|
|
nCount = length();
|
|
|
|
wxString dest(*this, 0, nCount);
|
|
if ( dest.length() != nCount ) {
|
|
wxFAIL_MSG( wxT("out of memory in wxString::Left") );
|
|
}
|
|
return dest;
|
|
}
|
|
|
|
// get all characters before the first occurrence of ch
|
|
// (returns the whole string if ch not found)
|
|
wxString wxString::BeforeFirst(wxUniChar ch, wxString *rest) const
|
|
{
|
|
int iPos = Find(ch);
|
|
if ( iPos == wxNOT_FOUND )
|
|
{
|
|
iPos = length();
|
|
if ( rest )
|
|
rest->clear();
|
|
}
|
|
else
|
|
{
|
|
if ( rest )
|
|
rest->assign(*this, iPos + 1, npos);
|
|
}
|
|
|
|
return wxString(*this, 0, iPos);
|
|
}
|
|
|
|
/// get all characters before the last occurrence of ch
|
|
/// (returns empty string if ch not found)
|
|
wxString wxString::BeforeLast(wxUniChar ch, wxString *rest) const
|
|
{
|
|
wxString str;
|
|
int iPos = Find(ch, true);
|
|
if ( iPos != wxNOT_FOUND )
|
|
{
|
|
if ( iPos != 0 )
|
|
str.assign(*this, 0, iPos);
|
|
|
|
if ( rest )
|
|
rest->assign(*this, iPos + 1, npos);
|
|
}
|
|
else
|
|
{
|
|
if ( rest )
|
|
*rest = *this;
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
/// get all characters after the first occurrence of ch
|
|
/// (returns empty string if ch not found)
|
|
wxString wxString::AfterFirst(wxUniChar ch) const
|
|
{
|
|
wxString str;
|
|
int iPos = Find(ch);
|
|
if ( iPos != wxNOT_FOUND )
|
|
str.assign(*this, iPos + 1, npos);
|
|
|
|
return str;
|
|
}
|
|
|
|
// replace first (or all) occurrences of some substring with another one
|
|
size_t wxString::Replace(const wxString& strOld,
|
|
const wxString& strNew, bool bReplaceAll)
|
|
{
|
|
// if we tried to replace an empty string we'd enter an infinite loop below
|
|
wxCHECK_MSG( !strOld.empty(), 0,
|
|
wxT("wxString::Replace(): invalid parameter") );
|
|
|
|
wxSTRING_INVALIDATE_CACHE();
|
|
|
|
size_t uiCount = 0; // count of replacements made
|
|
|
|
// optimize the special common case: replacement of one character by
|
|
// another one (in UTF-8 case we can only do this for ASCII characters)
|
|
//
|
|
// benchmarks show that this special version is around 3 times faster
|
|
// (depending on the proportion of matching characters and UTF-8/wchar_t
|
|
// build)
|
|
if ( strOld.m_impl.length() == 1 && strNew.m_impl.length() == 1 )
|
|
{
|
|
const wxStringCharType chOld = strOld.m_impl[0],
|
|
chNew = strNew.m_impl[0];
|
|
|
|
// this loop is the simplified version of the one below
|
|
for ( size_t pos = 0; ; )
|
|
{
|
|
pos = m_impl.find(chOld, pos);
|
|
if ( pos == npos )
|
|
break;
|
|
|
|
m_impl[pos++] = chNew;
|
|
|
|
uiCount++;
|
|
|
|
if ( !bReplaceAll )
|
|
break;
|
|
}
|
|
}
|
|
else if ( !bReplaceAll)
|
|
{
|
|
size_t pos = m_impl.find(strOld.m_impl, 0);
|
|
if ( pos != npos )
|
|
{
|
|
m_impl.replace(pos, strOld.m_impl.length(), strNew.m_impl);
|
|
uiCount = 1;
|
|
}
|
|
}
|
|
else // replace all occurrences
|
|
{
|
|
const size_t uiOldLen = strOld.m_impl.length();
|
|
const size_t uiNewLen = strNew.m_impl.length();
|
|
|
|
// first scan the string to find all positions at which the replacement
|
|
// should be made
|
|
wxVector<size_t> replacePositions;
|
|
|
|
size_t pos;
|
|
for ( pos = m_impl.find(strOld.m_impl, 0);
|
|
pos != npos;
|
|
pos = m_impl.find(strOld.m_impl, pos + uiOldLen))
|
|
{
|
|
replacePositions.push_back(pos);
|
|
++uiCount;
|
|
}
|
|
|
|
if ( !uiCount )
|
|
return 0;
|
|
|
|
// allocate enough memory for the whole new string
|
|
wxString tmp;
|
|
tmp.m_impl.reserve(m_impl.length() + uiCount*(uiNewLen - uiOldLen));
|
|
|
|
// copy this string to tmp doing replacements on the fly
|
|
size_t replNum = 0;
|
|
for ( pos = 0; replNum < uiCount; replNum++ )
|
|
{
|
|
const size_t nextReplPos = replacePositions[replNum];
|
|
|
|
if ( pos != nextReplPos )
|
|
{
|
|
tmp.m_impl.append(m_impl, pos, nextReplPos - pos);
|
|
}
|
|
|
|
tmp.m_impl.append(strNew.m_impl);
|
|
pos = nextReplPos + uiOldLen;
|
|
}
|
|
|
|
if ( pos != m_impl.length() )
|
|
{
|
|
// append the rest of the string unchanged
|
|
tmp.m_impl.append(m_impl, pos, m_impl.length() - pos);
|
|
}
|
|
|
|
swap(tmp);
|
|
}
|
|
|
|
return uiCount;
|
|
}
|
|
|
|
bool wxString::IsAscii() const
|
|
{
|
|
for ( const_iterator i = begin(); i != end(); ++i )
|
|
{
|
|
if ( !(*i).IsAscii() )
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wxString::IsWord() const
|
|
{
|
|
for ( const_iterator i = begin(); i != end(); ++i )
|
|
{
|
|
if ( !wxIsalpha(*i) )
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wxString::IsNumber() const
|
|
{
|
|
if ( empty() )
|
|
return true;
|
|
|
|
const_iterator i = begin();
|
|
|
|
if ( *i == wxT('-') || *i == wxT('+') )
|
|
++i;
|
|
|
|
for ( ; i != end(); ++i )
|
|
{
|
|
if ( !wxIsdigit(*i) )
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
wxString wxString::Strip(stripType w) const
|
|
{
|
|
wxString s = *this;
|
|
if ( w & leading ) s.Trim(false);
|
|
if ( w & trailing ) s.Trim(true);
|
|
return s;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// case conversion
|
|
// ---------------------------------------------------------------------------
|
|
|
|
wxString& wxString::MakeUpper()
|
|
{
|
|
for ( iterator it = begin(), en = end(); it != en; ++it )
|
|
*it = (wxChar)wxToupper(*it);
|
|
|
|
return *this;
|
|
}
|
|
|
|
wxString& wxString::MakeLower()
|
|
{
|
|
for ( iterator it = begin(), en = end(); it != en; ++it )
|
|
*it = (wxChar)wxTolower(*it);
|
|
|
|
return *this;
|
|
}
|
|
|
|
wxString& wxString::MakeCapitalized()
|
|
{
|
|
const iterator en = end();
|
|
iterator it = begin();
|
|
if ( it != en )
|
|
{
|
|
*it = (wxChar)wxToupper(*it);
|
|
for ( ++it; it != en; ++it )
|
|
*it = (wxChar)wxTolower(*it);
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// trimming and padding
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// some compilers (VC++ 6.0 not to name them) return true for a call to
|
|
// isspace('\xEA') in the C locale which seems to be broken to me, but we have
|
|
// to live with this by checking that the character is a 7 bit one - even if
|
|
// this may fail to detect some spaces (I don't know if Unicode doesn't have
|
|
// space-like symbols somewhere except in the first 128 chars), it is arguably
|
|
// still better than trimming away accented letters
|
|
inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
|
|
|
|
// trims spaces (in the sense of isspace) from left or right side
|
|
wxString& wxString::Trim(bool bFromRight)
|
|
{
|
|
// first check if we're going to modify the string at all
|
|
if ( !empty() &&
|
|
(
|
|
(bFromRight && wxSafeIsspace(GetChar(length() - 1))) ||
|
|
(!bFromRight && wxSafeIsspace(GetChar(0u)))
|
|
)
|
|
)
|
|
{
|
|
if ( bFromRight )
|
|
{
|
|
// find last non-space character
|
|
reverse_iterator psz = rbegin();
|
|
while ( (psz != rend()) && wxSafeIsspace(*psz) )
|
|
++psz;
|
|
|
|
// truncate at trailing space start
|
|
erase(psz.base(), end());
|
|
}
|
|
else
|
|
{
|
|
// find first non-space character
|
|
iterator psz = begin();
|
|
while ( (psz != end()) && wxSafeIsspace(*psz) )
|
|
++psz;
|
|
|
|
// fix up data and length
|
|
erase(begin(), psz);
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
// adds nCount characters chPad to the string from either side
|
|
wxString& wxString::Pad(size_t nCount, wxUniChar chPad, bool bFromRight)
|
|
{
|
|
wxString s(chPad, nCount);
|
|
|
|
if ( bFromRight )
|
|
*this += s;
|
|
else
|
|
{
|
|
s += *this;
|
|
swap(s);
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
// truncate the string
|
|
wxString& wxString::Truncate(size_t uiLen)
|
|
{
|
|
if ( uiLen < length() )
|
|
{
|
|
erase(begin() + uiLen, end());
|
|
wxSTRING_SET_CACHED_LENGTH(uiLen);
|
|
}
|
|
//else: nothing to do, string is already short enough
|
|
|
|
return *this;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// finding (return wxNOT_FOUND if not found and index otherwise)
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// find a character
|
|
int wxString::Find(wxUniChar ch, bool bFromEnd) const
|
|
{
|
|
size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
|
|
|
|
return (idx == npos) ? wxNOT_FOUND : (int)idx;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// conversion to numbers
|
|
// ----------------------------------------------------------------------------
|
|
|
|
namespace
|
|
{
|
|
|
|
// Tiny helper to preserve errno: it's used in the functions below because it
|
|
// would be unexpected if they changed errno, especially in the case of
|
|
// wxString::Format() that might be used when reporting errors.
|
|
class PreserveErrno
|
|
{
|
|
public:
|
|
PreserveErrno() : m_errnoOrig{errno} {}
|
|
~PreserveErrno() { errno = m_errnoOrig; }
|
|
|
|
private:
|
|
const int m_errnoOrig;
|
|
|
|
wxDECLARE_NO_COPY_CLASS(PreserveErrno);
|
|
};
|
|
|
|
// The implementation of all the functions below is exactly the same so factor
|
|
// it out in this template helper taking the function to call to actually
|
|
// perform the conversion to some larger type R and a function to check that
|
|
// the conversion result is in the correct range for the type T.
|
|
//
|
|
// Note that number extraction works correctly on UTF-8 strings, so
|
|
// we can use wxStringCharType and wx_str() for maximum efficiency.
|
|
template <typename R, typename T>
|
|
bool
|
|
ToNumeric(T* pVal,
|
|
R (*convert)(const wxStringCharType*, wxStringCharType**, int),
|
|
const wxStringCharType* start,
|
|
int base,
|
|
bool (*rangeCheck)(R))
|
|
{
|
|
wxASSERT_MSG(!base || (base > 1 && base <= 36), wxT("invalid base"));
|
|
wxCHECK_MSG( pVal, false, wxT("null output pointer") );
|
|
|
|
PreserveErrno preserveErrno;
|
|
errno = 0;
|
|
|
|
wxStringCharType *end;
|
|
|
|
const R res = convert(start, &end, base);
|
|
if ( rangeCheck && !rangeCheck(res) )
|
|
return false;
|
|
|
|
// notice that we return false without modifying the output parameter at all if
|
|
// nothing could be parsed but we do modify it and return false then if we did
|
|
// parse something successfully but not the entire string
|
|
if ( end == start || errno == ERANGE )
|
|
return false;
|
|
|
|
*pVal = static_cast<T>(res);
|
|
return !*end;
|
|
}
|
|
|
|
// This is a simplified version which uses the conversion function returning
|
|
// the desired type directly, and hence no range checking function at all.
|
|
template <typename T>
|
|
bool
|
|
ToNumeric(T* pVal,
|
|
T (*convert)(const wxStringCharType*, wxStringCharType**, int),
|
|
const wxStringCharType* start,
|
|
int base = 0)
|
|
{
|
|
return ToNumeric<T>(pVal, convert, start, base, nullptr);
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
bool wxString::ToInt(int *pVal, int base) const
|
|
{
|
|
return ToNumeric<wxLongLong_t>
|
|
(
|
|
pVal, wxStrtoll, wx_str(), base,
|
|
[](wxLongLong_t val) { return val >= INT_MIN && val <= INT_MAX; }
|
|
);
|
|
}
|
|
|
|
bool wxString::ToUInt(unsigned int *pVal, int base) const
|
|
{
|
|
return ToNumeric<wxULongLong_t>
|
|
(
|
|
pVal, wxStrtoull, wx_str(), base,
|
|
[](wxULongLong_t val) { return val <= UINT_MAX; }
|
|
);
|
|
}
|
|
|
|
bool wxString::ToLong(long *pVal, int base) const
|
|
{
|
|
return ToNumeric(pVal, wxStrtol, wx_str(), base);
|
|
}
|
|
|
|
bool wxString::ToULong(unsigned long *pVal, int base) const
|
|
{
|
|
return ToNumeric(pVal, wxStrtoul, wx_str(), base);
|
|
}
|
|
|
|
bool wxString::ToLongLong(wxLongLong_t *pVal, int base) const
|
|
{
|
|
return ToNumeric(pVal, wxStrtoll, wx_str(), base);
|
|
}
|
|
|
|
bool wxString::ToULongLong(wxULongLong_t *pVal, int base) const
|
|
{
|
|
return ToNumeric(pVal, wxStrtoull, wx_str(), base);
|
|
}
|
|
|
|
bool wxString::ToDouble(double *pVal) const
|
|
{
|
|
// Use a hack to allow calling wxStrtod() with an unused "base" parameter
|
|
// for consistency with the other functions.
|
|
return ToNumeric<double>
|
|
(
|
|
pVal,
|
|
[](const wxStringCharType* start, wxStringCharType** endptr, int)
|
|
{
|
|
return wxStrtod(start, endptr);
|
|
},
|
|
wx_str()
|
|
);
|
|
}
|
|
|
|
// There are several possibilities for implementing the conversion functions
|
|
// always using "C" locale:
|
|
//
|
|
// 1. Preferred one: use C++17 <charconv>, this is the fastest way to do it.
|
|
// 2. Use <xlocale.h> if it's available.
|
|
// 3. Use standard locale-dependent C functions and adjust them for the
|
|
// current locale (slowest and the least robust).
|
|
|
|
// Check if C++17 <charconv> is available: even though normally it should be
|
|
// available in any compiler claiming C++17 support, there are actually some
|
|
// compilers (e.g. gcc 7) that don't have it, so do it in this way instead:
|
|
#if wxHAS_CXX17_INCLUDE(<charconv>)
|
|
// This should define __cpp_lib_to_chars checked below.
|
|
#include <charconv>
|
|
#endif
|
|
|
|
// Now check if the functions we need are present in it (normally they ought
|
|
// to if the compiler claims to support C++17, but it doesn't hurt to check).
|
|
#ifdef __cpp_lib_to_chars
|
|
|
|
bool wxString::ToCLong(long *pVal, int base) const
|
|
{
|
|
wxCHECK_MSG( pVal, false, "null output pointer" );
|
|
|
|
const wxScopedCharBuffer& buf = utf8_str();
|
|
auto start = buf.data();
|
|
const auto end = start + buf.length();
|
|
|
|
// from_chars() doesn't recognize base==0 and doesn't recognize "0x" prefix
|
|
// even if base 16 is explicitly specified, so adjust the input to use the
|
|
// form it supports.
|
|
if ( buf.length() > 1 && *start == '0' )
|
|
{
|
|
++start;
|
|
if ( *start == 'x' || *start == 'X' )
|
|
{
|
|
++start;
|
|
if ( base == 0 )
|
|
base = 16;
|
|
else if ( base != 16 )
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
if ( base == 0 )
|
|
base = 8;
|
|
}
|
|
}
|
|
|
|
if ( base == 0 )
|
|
base = 10;
|
|
|
|
const auto res = std::from_chars(start, end, *pVal, base);
|
|
|
|
return res.ec == std::errc{} && res.ptr == end;
|
|
}
|
|
|
|
bool wxString::ToCULong(unsigned long *pVal, int base) const
|
|
{
|
|
// We intentionally don't use std::from_chars() here because this function
|
|
// is supposed to be compatible with strtoul() and so _succeed_ for "-1",
|
|
// for example, instead of returning an error as from_chars() (much more
|
|
// logically) does.
|
|
|
|
wxCHECK_MSG( pVal, false, "null output pointer" );
|
|
|
|
long l;
|
|
if ( !ToCLong(&l, base) )
|
|
return false;
|
|
|
|
*pVal = static_cast<unsigned long>(l);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wxString::ToCDouble(double *pVal) const
|
|
{
|
|
wxCHECK_MSG( pVal, false, "null output pointer" );
|
|
|
|
const wxScopedCharBuffer& buf = utf8_str();
|
|
const auto start = buf.data();
|
|
const auto end = start + buf.length();
|
|
const auto res = std::from_chars(start, end, *pVal);
|
|
|
|
return res.ec == std::errc{} && res.ptr == end;
|
|
}
|
|
|
|
wxString wxString::FromCDouble(double val, int precision)
|
|
{
|
|
wxCHECK_MSG( precision >= -1, wxString(), "Invalid negative precision" );
|
|
|
|
// 64 digits is more than enough for any double.
|
|
char buf[64];
|
|
const auto start = buf;
|
|
const auto end = buf + sizeof(buf);
|
|
|
|
std::to_chars_result res;
|
|
|
|
// Note that we must explicitly specify the precision to remain compatible
|
|
// with the behaviour of sprintf("%g"): by default, the result would be the
|
|
// shortest string avoiding precision loss, but "%g" is supposed to
|
|
// truncate, so use its default precision explicitly to achieve this here.
|
|
if ( precision == -1 )
|
|
res = std::to_chars(start, end, val, std::chars_format::general, 6);
|
|
else
|
|
res = std::to_chars(start, end, val, std::chars_format::fixed, precision);
|
|
|
|
if ( res.ec != std::errc{} )
|
|
return {};
|
|
|
|
*res.ptr = '\0';
|
|
|
|
return wxString::FromAscii(buf);
|
|
}
|
|
|
|
#elif wxUSE_XLOCALE
|
|
|
|
bool wxString::ToCLong(long *pVal, int base) const
|
|
{
|
|
return ToNumeric<long>
|
|
(
|
|
pVal,
|
|
[](const wxStringCharType* start, wxStringCharType** endptr, int base)
|
|
{
|
|
#if wxUSE_UNICODE_UTF8 && defined(wxHAS_XLOCALE_SUPPORT)
|
|
return wxStrtol_lA(start, endptr, base, wxCLocale);
|
|
#else
|
|
return wxStrtol_l(start, endptr, base, wxCLocale);
|
|
#endif
|
|
},
|
|
wx_str(), base
|
|
);
|
|
}
|
|
|
|
bool wxString::ToCULong(unsigned long *pVal, int base) const
|
|
{
|
|
return ToNumeric<unsigned long>
|
|
(
|
|
pVal,
|
|
[](const wxStringCharType* start, wxStringCharType** endptr, int base)
|
|
{
|
|
#if wxUSE_UNICODE_UTF8 && defined(wxHAS_XLOCALE_SUPPORT)
|
|
return wxStrtoul_lA(start, endptr, base, wxCLocale);
|
|
#else
|
|
return wxStrtoul_l(start, endptr, base, wxCLocale);
|
|
#endif
|
|
},
|
|
wx_str(), base
|
|
);
|
|
}
|
|
|
|
bool wxString::ToCDouble(double *pVal) const
|
|
{
|
|
return ToNumeric<double>
|
|
(
|
|
pVal,
|
|
[](const wxStringCharType* start, wxStringCharType** endptr, int)
|
|
{
|
|
#if wxUSE_UNICODE_UTF8 && defined(wxHAS_XLOCALE_SUPPORT)
|
|
return wxStrtod_lA(start, endptr, wxCLocale);
|
|
#else
|
|
return wxStrtod_l(start, endptr, wxCLocale);
|
|
#endif
|
|
},
|
|
wx_str()
|
|
);
|
|
}
|
|
|
|
#else // wxUSE_XLOCALE
|
|
|
|
// Provide implementation of these functions even when wxUSE_XLOCALE is
|
|
// disabled, we still need them in wxWidgets internal code.
|
|
|
|
// For integers we just assume the current locale uses the same number
|
|
// representation as the C one as there is nothing else we can do.
|
|
bool wxString::ToCLong(long *pVal, int base) const
|
|
{
|
|
return ToLong(pVal, base);
|
|
}
|
|
|
|
bool wxString::ToCULong(unsigned long *pVal, int base) const
|
|
{
|
|
return ToULong(pVal, base);
|
|
}
|
|
|
|
// For floating point numbers we have to handle the problem of the decimal
|
|
// point which is different in different locales.
|
|
bool wxString::ToCDouble(double *pVal) const
|
|
{
|
|
// See the explanations in FromCDouble() below for the reasons for all this.
|
|
|
|
// Try parsing using the current locale separator.
|
|
if ( ToDouble(pVal) )
|
|
{
|
|
if ( find(',') != npos )
|
|
{
|
|
// Can't be a valid number in C locale.
|
|
return false;
|
|
}
|
|
|
|
// Either current decimal separator is the point or this string doesn't
|
|
// contain any decimal separator at all, in either case the result must
|
|
// be correct and we don't have anything else to do.
|
|
return true;
|
|
}
|
|
|
|
// Try to replace the separator with the only alternative value.
|
|
const size_t posPeriod = find('.');
|
|
if ( posPeriod == npos )
|
|
{
|
|
// No separator at all, so no need to retry with an alternative one.
|
|
return false;
|
|
}
|
|
|
|
wxString cstr(*this);
|
|
cstr[posPeriod] = ',';
|
|
|
|
return cstr.ToDouble(pVal);
|
|
}
|
|
|
|
#endif // wxUSE_XLOCALE/!wxUSE_XLOCALE
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// number to string conversion
|
|
// ----------------------------------------------------------------------------
|
|
|
|
/* static */
|
|
wxString wxString::FromDouble(double val, int precision)
|
|
{
|
|
wxCHECK_MSG( precision >= -1, wxString(), "Invalid negative precision" );
|
|
|
|
wxString format;
|
|
if ( precision == -1 )
|
|
{
|
|
format = "%g";
|
|
}
|
|
else // Use fixed precision.
|
|
{
|
|
format.Printf("%%.%df", precision);
|
|
}
|
|
|
|
return wxString::Format(format, val);
|
|
}
|
|
|
|
#ifndef __cpp_lib_to_chars
|
|
|
|
/* static */
|
|
wxString wxString::FromCDouble(double val, int precision)
|
|
{
|
|
wxCHECK_MSG( precision >= -1, wxString(), "Invalid negative precision" );
|
|
|
|
// Without std::to_chars() there is no portable way to get the number
|
|
// directly in the C locale and while some platforms provide special
|
|
// functions to do this (e.g. _sprintf_l() in MSVS or sprintf_l() in BSD
|
|
// systems), some systems we still support don't have them, so just use
|
|
// the hack below and replace any occurrences of a comma (which is the only
|
|
// alternative decimal separator that can be really used) with a period.
|
|
|
|
wxString s = FromDouble(val, precision);
|
|
const size_t posComma = s.find(',');
|
|
if ( posComma != npos )
|
|
s[posComma] = '.';
|
|
|
|
return s;
|
|
}
|
|
|
|
#endif // !__cpp_lib_to_chars
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// formatted output
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/* static */
|
|
wxString wxString::FormatV(const wxString& format, va_list argptr)
|
|
{
|
|
wxString s;
|
|
s.PrintfV(format, argptr);
|
|
return s;
|
|
}
|
|
|
|
#if !wxUSE_UTF8_LOCALE_ONLY
|
|
int wxString::DoPrintfWchar(const wxChar *format, ...)
|
|
{
|
|
va_list argptr;
|
|
va_start(argptr, format);
|
|
|
|
int iLen = PrintfV(format, argptr);
|
|
|
|
va_end(argptr);
|
|
|
|
return iLen;
|
|
}
|
|
#endif // !wxUSE_UTF8_LOCALE_ONLY
|
|
|
|
#if wxUSE_UNICODE_UTF8
|
|
int wxString::DoPrintfUtf8(const char *format, ...)
|
|
{
|
|
va_list argptr;
|
|
va_start(argptr, format);
|
|
|
|
int iLen = PrintfV(wxString::FromUTF8(format), argptr);
|
|
|
|
va_end(argptr);
|
|
|
|
return iLen;
|
|
}
|
|
#endif // wxUSE_UNICODE_UTF8
|
|
|
|
/*
|
|
Uses wxVsnprintf and places the result into the this string.
|
|
|
|
wxVsnprintf() is effectively vswprintf() and, according to ISO C99 (and
|
|
thus SUSv3) standard, a conforming vswprintf implementations must
|
|
just return a negative number and is not even required to set errno, which
|
|
makes the standard behaviour totally useless as there is no way to
|
|
determine if the error occurred due to a (fatal) problem with either the
|
|
format string or the arguments or to a (correctable) problem with the
|
|
buffer just not being big enough.
|
|
|
|
In practice some implementations (including our own implementation of
|
|
vsprintf(), if we use it) do set errno to EILSEQ or EINVAL. Both of
|
|
those are defined in the standard and backed up by several conformance
|
|
statements. Note that ENOMEM mentioned in the manual page does not
|
|
apply to swprintf, only wprintf and fwprintf.
|
|
|
|
Official manual page:
|
|
http://www.opengroup.org/onlinepubs/009695399/functions/swprintf.html
|
|
|
|
Some conformance statements (AIX, Solaris):
|
|
http://www.opengroup.org/csq/view.mhtml?RID=ibm%2FSD1%2F3
|
|
http://www.theopengroup.org/csq/view.mhtml?norationale=1&noreferences=1&RID=Fujitsu%2FSE2%2F10
|
|
|
|
So we can check for these specific errno values to detect invalid format
|
|
string or arguments. Unfortunately not all implementations set them and, in
|
|
particular, glibc, use under Linux, never sets errno at all. This means
|
|
that we have no choice but to try increasing the buffer size because we
|
|
can't distinguish between the unrecoverable errors and buffer just being too
|
|
small. Of course, continuing increasing the size forever will sooner or
|
|
later result in out of memory error and crashing, so we also have to impose
|
|
some arbitrary limit on it.
|
|
*/
|
|
#if wxUSE_UNICODE_UTF8
|
|
template<typename BufferType>
|
|
#else
|
|
// we only need one version in non-UTF8 builds and at least two Windows
|
|
// compilers have problems with this function template, so use just one
|
|
// normal function here
|
|
#endif
|
|
static int DoStringPrintfV(wxString& str,
|
|
const wxString& format, va_list argptr)
|
|
{
|
|
size_t size = 1024;
|
|
PreserveErrno preserveErrno;
|
|
|
|
for ( ;; )
|
|
{
|
|
#if wxUSE_UNICODE_UTF8
|
|
BufferType tmp(str, size + 1);
|
|
typename BufferType::CharType *buf = tmp;
|
|
#else
|
|
wxStringBuffer tmp(str, size + 1);
|
|
wxChar *buf = tmp;
|
|
#endif
|
|
|
|
if ( !buf )
|
|
{
|
|
// out of memory
|
|
return -1;
|
|
}
|
|
|
|
// wxVsnprintf() may modify the original arg pointer, so pass it
|
|
// only a copy
|
|
va_list argptrcopy;
|
|
wxVaCopy(argptrcopy, argptr);
|
|
|
|
// Set errno to 0 to make it determinate if wxVsnprintf fails to set it.
|
|
errno = 0;
|
|
int len = wxVsnprintf(buf, size, format, argptrcopy);
|
|
va_end(argptrcopy);
|
|
|
|
// some implementations of vsnprintf() don't NUL terminate
|
|
// the string if there is not enough space for it so
|
|
// always do it manually
|
|
// FIXME: This really seems to be the wrong and would be an off-by-one
|
|
// bug except the code above allocates an extra character.
|
|
buf[size] = wxT('\0');
|
|
|
|
// Handle all possible results that we can get depending on the build
|
|
// options.
|
|
if ( len < 0 )
|
|
{
|
|
// When vswprintf() returns an error, it can leave invalid bytes in
|
|
// the buffer, e.g. using "%c" with an invalid character results in
|
|
// U+FFFFFFFF in the buffer, which would trigger an assert when we
|
|
// try to copy it back to wxString as UTF-8 in "tmp" buffer dtor,
|
|
// so ensure we don't try to do it.
|
|
buf[0] = L'\0';
|
|
|
|
// assume it only returns error if there is not enough space, but
|
|
// as we don't know how much we need, double the current size of
|
|
// the buffer
|
|
if( (errno == EILSEQ) || (errno == EINVAL) )
|
|
{
|
|
// If errno was set to one of the two well-known hard errors
|
|
// then fail immediately to avoid an infinite loop.
|
|
return -1;
|
|
}
|
|
|
|
// still not enough, as we don't know how much we need, double the
|
|
// current size of the buffer -- unless it's already too big, as we
|
|
// have to stop at some point to avoid running out of memory and
|
|
// crashing or worse (e.g. triggering OOM killer and accidentally
|
|
// killing some other innocent process)
|
|
|
|
// The limit is completely arbitrary, it's supposed to be big
|
|
// enough to never become a problem in practice, but not so big as
|
|
// to result in out of memory crashes.
|
|
static const size_t MAX_BUFFER_SIZE = 128*1024*1024;
|
|
|
|
if ( size >= MAX_BUFFER_SIZE )
|
|
return -1;
|
|
|
|
// Note that doubling the size here will never overflow for size
|
|
// less than the limit.
|
|
size *= 2;
|
|
}
|
|
else if ( static_cast<size_t>(len) >= size )
|
|
{
|
|
// we got back the needed size, but it doesn't include space for
|
|
// NUL, so add it ourselves
|
|
size = len + 1;
|
|
}
|
|
else // ok, there was enough space
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
// we could have overshot
|
|
str.Shrink();
|
|
|
|
return str.length();
|
|
}
|
|
|
|
int wxString::PrintfV(const wxString& format, va_list argptr)
|
|
{
|
|
#if wxUSE_UTF8_LOCALE_ONLY
|
|
return DoStringPrintfV<wxUTF8StringBuffer>(*this, format, argptr);
|
|
#else
|
|
#if wxUSE_UNICODE_UTF8
|
|
if ( wxLocaleIsUtf8 )
|
|
return DoStringPrintfV<wxUTF8StringBuffer>(*this, format, argptr);
|
|
else
|
|
// wxChar* version
|
|
return DoStringPrintfV<wxStringBuffer>(*this, format, argptr);
|
|
#else
|
|
return DoStringPrintfV(*this, format, argptr);
|
|
#endif // UTF8/WCHAR
|
|
#endif
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// misc other operations
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// returns true if the string matches the pattern which may contain '*' and
|
|
// '?' metacharacters (as usual, '?' matches any character and '*' any number
|
|
// of them)
|
|
bool wxString::Matches(const wxString& mask) const
|
|
{
|
|
// I disable this code as it doesn't seem to be faster (in fact, it seems
|
|
// to be much slower) than the old, hand-written code below and using it
|
|
// here requires always linking with libregex even if the user code doesn't
|
|
// use it
|
|
#if 0 // wxUSE_REGEX
|
|
// first translate the shell-like mask into a regex
|
|
wxString pattern;
|
|
pattern.reserve(wxStrlen(pszMask));
|
|
|
|
pattern += wxT('^');
|
|
while ( *pszMask )
|
|
{
|
|
switch ( *pszMask )
|
|
{
|
|
case wxT('?'):
|
|
pattern += wxT('.');
|
|
break;
|
|
|
|
case wxT('*'):
|
|
pattern += wxT(".*");
|
|
break;
|
|
|
|
case wxT('^'):
|
|
case wxT('.'):
|
|
case wxT('$'):
|
|
case wxT('('):
|
|
case wxT(')'):
|
|
case wxT('|'):
|
|
case wxT('+'):
|
|
case wxT('\\'):
|
|
// these characters are special in a RE, quote them
|
|
// (however note that we don't quote '[' and ']' to allow
|
|
// using them for Unix shell like matching)
|
|
pattern += wxT('\\');
|
|
wxFALLTHROUGH;
|
|
|
|
default:
|
|
pattern += *pszMask;
|
|
}
|
|
|
|
pszMask++;
|
|
}
|
|
pattern += wxT('$');
|
|
|
|
// and now use it
|
|
return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
|
|
#else // !wxUSE_REGEX
|
|
// TODO: this is, of course, awfully inefficient...
|
|
|
|
// FIXME-UTF8: implement using iterators, remove #if
|
|
#if wxUSE_UNICODE_UTF8
|
|
const wxScopedWCharBuffer maskBuf = mask.wc_str();
|
|
const wxScopedWCharBuffer txtBuf = wc_str();
|
|
const wxChar *pszMask = maskBuf.data();
|
|
const wxChar *pszTxt = txtBuf.data();
|
|
#else
|
|
const wxChar *pszMask = mask.wx_str();
|
|
// the char currently being checked
|
|
const wxChar *pszTxt = wx_str();
|
|
#endif
|
|
|
|
// the last location where '*' matched
|
|
const wxChar *pszLastStarInText = nullptr;
|
|
const wxChar *pszLastStarInMask = nullptr;
|
|
|
|
match:
|
|
for ( ; *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
|
|
switch ( *pszMask ) {
|
|
case wxT('?'):
|
|
if ( *pszTxt == wxT('\0') )
|
|
return false;
|
|
|
|
// pszTxt and pszMask will be incremented in the loop statement
|
|
|
|
break;
|
|
|
|
case wxT('*'):
|
|
{
|
|
// remember where we started to be able to backtrack later
|
|
pszLastStarInText = pszTxt;
|
|
pszLastStarInMask = pszMask;
|
|
|
|
// ignore special chars immediately following this one
|
|
// (should this be an error?)
|
|
while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
|
|
pszMask++;
|
|
|
|
// if there is nothing more, match
|
|
if ( *pszMask == wxT('\0') )
|
|
return true;
|
|
|
|
// are there any other metacharacters in the mask?
|
|
size_t uiLenMask;
|
|
const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));
|
|
|
|
if ( pEndMask != nullptr ) {
|
|
// we have to match the string between two metachars
|
|
uiLenMask = pEndMask - pszMask;
|
|
}
|
|
else {
|
|
// we have to match the remainder of the string
|
|
uiLenMask = wxStrlen(pszMask);
|
|
}
|
|
|
|
wxString strToMatch(pszMask, uiLenMask);
|
|
const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
|
|
if ( pMatch == nullptr )
|
|
return false;
|
|
|
|
// -1 to compensate "++" in the loop
|
|
pszTxt = pMatch + uiLenMask - 1;
|
|
pszMask += uiLenMask - 1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if ( *pszMask != *pszTxt )
|
|
return false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// match only if nothing left
|
|
if ( *pszTxt == wxT('\0') )
|
|
return true;
|
|
|
|
// if we failed to match, backtrack if we can
|
|
if ( pszLastStarInText ) {
|
|
pszTxt = pszLastStarInText + 1;
|
|
pszMask = pszLastStarInMask;
|
|
|
|
pszLastStarInText = nullptr;
|
|
|
|
// don't bother resetting pszLastStarInMask, it's unnecessary
|
|
|
|
goto match;
|
|
}
|
|
|
|
return false;
|
|
#endif // wxUSE_REGEX/!wxUSE_REGEX
|
|
}
|
|
|
|
// Count the number of chars
|
|
int wxString::Freq(wxUniChar ch) const
|
|
{
|
|
int count = 0;
|
|
for ( const_iterator i = begin(); i != end(); ++i )
|
|
{
|
|
if ( *i == ch )
|
|
count ++;
|
|
}
|
|
return count;
|
|
}
|
|
|