2a7431e130
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48614 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1891 lines
52 KiB
C++
1891 lines
52 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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// RCS-ID: $Id$
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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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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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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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#endif
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#include <ctype.h>
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#ifndef __WXWINCE__
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#include <errno.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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#ifdef __SALFORDC__
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#include <clib.h>
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#endif
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#include "wx/hashmap.h"
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// string handling functions used by wxString:
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#if wxUSE_UNICODE_UTF8
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#define wxStringMemcpy memcpy
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#define wxStringMemcmp memcmp
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#define wxStringMemchr memchr
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#define wxStringStrlen strlen
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#else
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#define wxStringMemcpy wxTmemcpy
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#define wxStringMemcmp wxTmemcmp
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#define wxStringMemchr wxTmemchr
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#define wxStringStrlen wxStrlen
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#endif
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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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// ----------------------------------------------------------------------------
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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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wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
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{
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// FIXME-UTF8: always, not only if wxUSE_UNICODE
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#if wxUSE_UNICODE && !defined(__BORLANDC__)
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return os << (const wchar_t*)str.AsWCharBuf();
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#else
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return os << (const char*)str.AsCharBuf();
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#endif
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}
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wxSTD ostream& operator<<(wxSTD 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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wxSTD ostream& operator<<(wxSTD ostream& os, const wxCharBuffer& str)
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{
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return os << str.data();
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}
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#ifndef __BORLANDC__
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wxSTD ostream& operator<<(wxSTD ostream& os, const wxWCharBuffer& str)
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{
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return os << str.data();
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}
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#endif
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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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*implPos = npos;
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else
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{
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const_iterator i = begin() + pos;
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*implPos = wxStringImpl::const_iterator(i.impl()) - m_impl.begin();
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if ( len == npos )
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*implLen = npos;
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else
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{
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// too large length is interpreted as "to the end of the string"
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// FIXME-UTF8: verify this is the case in std::string, assert
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// otherwise
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if ( pos + len > length() )
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len = length() - pos;
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*implLen = (i + len).impl() - i.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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#if wxUSE_UNICODE
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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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#endif // wxUSE_UNICODE
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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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#if wxUSE_UNICODE
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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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#endif
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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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#if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
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const char* wxCStrData::AsChar() const
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{
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#if wxUSE_UNICODE_UTF8
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if ( wxLocaleIsUtf8 )
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return AsInternal();
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#endif
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// under non-UTF8 locales, we have to convert the internal UTF-8
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// representation using wxConvLibc and cache the result
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wxString *str = wxConstCast(m_str, wxString);
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// convert the string:
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//
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// FIXME-UTF8: we'd like to do the conversion in the existing buffer (if we
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// have it) but it's unfortunately not obvious to implement
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// because we don't know how big buffer do we need for the
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// given string length (in case of multibyte encodings, e.g.
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// ISO-2022-JP or UTF-8 when internal representation is wchar_t)
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//
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// One idea would be to store more than just m_convertedToChar
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// in wxString: then we could record the length of the string
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// which was converted the last time and try to reuse the same
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// buffer if the current length is not greater than it (this
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// could still fail because string could have been modified in
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// place but it would work most of the time, so we'd do it and
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// only allocate the new buffer if in-place conversion returned
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// an error). We could also store a bit saying if the string
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// was modified since the last conversion (and update it in all
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// operation modifying the string, of course) to avoid unneeded
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// consequential conversions. But both of these ideas require
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// adding more fields to wxString and require profiling results
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// to be sure that we really gain enough from them to justify
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// doing it.
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wxCharBuffer buf(str->mb_str());
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// if it failed, return empty string and not NULL to avoid crashes in code
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// written with either wxWidgets 2 wxString or std::string behaviour in
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// mind: neither of them ever returns NULL and so we shouldn't neither
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if ( !buf )
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return "";
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if ( str->m_convertedToChar &&
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strlen(buf) == strlen(str->m_convertedToChar) )
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{
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// keep the same buffer for as long as possible, so that several calls
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// to c_str() in a row still work:
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strcpy(str->m_convertedToChar, buf);
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}
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else
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{
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str->m_convertedToChar = buf.release();
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}
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// and keep it:
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return str->m_convertedToChar + m_offset;
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}
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#endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
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#if !wxUSE_UNICODE_WCHAR
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const wchar_t* wxCStrData::AsWChar() const
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{
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wxString *str = wxConstCast(m_str, wxString);
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// convert the string:
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wxWCharBuffer buf(str->wc_str());
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// notice that here, unlike above in AsChar(), conversion can't fail as our
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// internal UTF-8 is always well-formed -- or the string was corrupted and
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// all bets are off anyhow
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// FIXME-UTF8: do the conversion in-place in the existing buffer
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if ( str->m_convertedToWChar &&
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wxWcslen(buf) == wxWcslen(str->m_convertedToWChar) )
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{
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// keep the same buffer for as long as possible, so that several calls
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// to c_str() in a row still work:
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memcpy(str->m_convertedToWChar, buf, sizeof(wchar_t) * wxWcslen(buf));
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}
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else
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{
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str->m_convertedToWChar = buf.release();
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}
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// and keep it:
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return str->m_convertedToWChar + m_offset;
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}
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#endif // !wxUSE_UNICODE_WCHAR
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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(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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wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
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if ( !wcLen )
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return SubstrBufFromMB(_T(""), 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("", 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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return SubstrBufFromMB(wxCharBuffer::CreateNonOwned(psz), 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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wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
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if ( !wcLen )
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return SubstrBufFromMB("", 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, _T("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 || !wxUSE_UNICODE
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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("", 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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wxCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
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if ( !mbLen )
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return SubstrBufFromWC("", 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 || !wxUSE_UNICODE
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#if wxUSE_UNICODE_WCHAR
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//Convert wxString in Unicode mode to a multi-byte string
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const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
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{
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return conv.cWC2MB(wx_str(), length() + 1 /* size, not length */, NULL);
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}
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|
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#elif wxUSE_UNICODE_UTF8
|
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const wxWCharBuffer wxString::wc_str() const
|
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{
|
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return wxMBConvStrictUTF8().cMB2WC
|
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(
|
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m_impl.c_str(),
|
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m_impl.length() + 1, // size, not length
|
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NULL
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);
|
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}
|
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|
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const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
|
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{
|
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if ( conv.IsUTF8() )
|
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return wxCharBuffer::CreateNonOwned(m_impl.c_str());
|
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|
||
// FIXME-UTF8: use wc_str() here once we have buffers with length
|
||
|
||
size_t wcLen;
|
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wxWCharBuffer wcBuf(wxMBConvStrictUTF8().cMB2WC
|
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(
|
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m_impl.c_str(),
|
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m_impl.length() + 1, // size
|
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&wcLen
|
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));
|
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if ( !wcLen )
|
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return wxCharBuffer("");
|
||
|
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return conv.cWC2MB(wcBuf, wcLen+1, NULL);
|
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}
|
||
|
||
#else // ANSI
|
||
|
||
//Converts this string to a wide character string if unicode
|
||
//mode is not enabled and wxUSE_WCHAR_T is enabled
|
||
const wxWCharBuffer wxString::wc_str(const wxMBConv& conv) const
|
||
{
|
||
return conv.cMB2WC(wx_str(), length() + 1 /* size, not length */, NULL);
|
||
}
|
||
|
||
#endif // Unicode/ANSI
|
||
|
||
// shrink to minimal size (releasing extra memory)
|
||
bool wxString::Shrink()
|
||
{
|
||
wxString tmp(begin(), end());
|
||
swap(tmp);
|
||
return tmp.length() == length();
|
||
}
|
||
|
||
// deprecated compatibility code:
|
||
#if WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
|
||
wxStringCharType *wxString::GetWriteBuf(size_t nLen)
|
||
{
|
||
return DoGetWriteBuf(nLen);
|
||
}
|
||
|
||
void wxString::UngetWriteBuf()
|
||
{
|
||
DoUngetWriteBuf();
|
||
}
|
||
|
||
void wxString::UngetWriteBuf(size_t nLen)
|
||
{
|
||
DoUngetWriteBuf(nLen);
|
||
}
|
||
#endif // WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
|
||
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// 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)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str1.IsValid() );
|
||
wxASSERT( str2.IsValid() );
|
||
#endif
|
||
|
||
wxString s = str1;
|
||
s += str2;
|
||
|
||
return s;
|
||
}
|
||
|
||
wxString operator+(const wxString& str, wxUniChar ch)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str.IsValid() );
|
||
#endif
|
||
|
||
wxString s = str;
|
||
s += ch;
|
||
|
||
return s;
|
||
}
|
||
|
||
wxString operator+(wxUniChar ch, const wxString& str)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str.IsValid() );
|
||
#endif
|
||
|
||
wxString s = ch;
|
||
s += str;
|
||
|
||
return s;
|
||
}
|
||
|
||
wxString operator+(const wxString& str, const char *psz)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str.IsValid() );
|
||
#endif
|
||
|
||
wxString s;
|
||
if ( !s.Alloc(strlen(psz) + str.length()) ) {
|
||
wxFAIL_MSG( _T("out of memory in wxString::operator+") );
|
||
}
|
||
s += str;
|
||
s += psz;
|
||
|
||
return s;
|
||
}
|
||
|
||
wxString operator+(const wxString& str, const wchar_t *pwz)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str.IsValid() );
|
||
#endif
|
||
|
||
wxString s;
|
||
if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
|
||
wxFAIL_MSG( _T("out of memory in wxString::operator+") );
|
||
}
|
||
s += str;
|
||
s += pwz;
|
||
|
||
return s;
|
||
}
|
||
|
||
wxString operator+(const char *psz, const wxString& str)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str.IsValid() );
|
||
#endif
|
||
|
||
wxString s;
|
||
if ( !s.Alloc(strlen(psz) + str.length()) ) {
|
||
wxFAIL_MSG( _T("out of memory in wxString::operator+") );
|
||
}
|
||
s = psz;
|
||
s += str;
|
||
|
||
return s;
|
||
}
|
||
|
||
wxString operator+(const wchar_t *pwz, const wxString& str)
|
||
{
|
||
#if !wxUSE_STL_BASED_WXSTRING
|
||
wxASSERT( str.IsValid() );
|
||
#endif
|
||
|
||
wxString s;
|
||
if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
|
||
wxFAIL_MSG( _T("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));
|
||
}
|
||
|
||
#ifdef HAVE_STD_STRING_COMPARE
|
||
|
||
// NB: Comparison code (both if HAVE_STD_STRING_COMPARE and if not) 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);
|
||
}
|
||
|
||
#else // !HAVE_STD_STRING_COMPARE
|
||
|
||
static inline int wxDoCmp(const wxStringCharType* s1, size_t l1,
|
||
const wxStringCharType* s2, size_t l2)
|
||
{
|
||
if( l1 == l2 )
|
||
return wxStringMemcmp(s1, s2, l1);
|
||
else if( l1 < l2 )
|
||
{
|
||
int ret = wxStringMemcmp(s1, s2, l1);
|
||
return ret == 0 ? -1 : ret;
|
||
}
|
||
else
|
||
{
|
||
int ret = wxStringMemcmp(s1, s2, l2);
|
||
return ret == 0 ? +1 : ret;
|
||
}
|
||
}
|
||
|
||
int wxString::compare(const wxString& str) const
|
||
{
|
||
return ::wxDoCmp(m_impl.data(), m_impl.length(),
|
||
str.m_impl.data(), str.m_impl.length());
|
||
}
|
||
|
||
int wxString::compare(size_t nStart, size_t nLen,
|
||
const wxString& str) const
|
||
{
|
||
wxASSERT(nStart <= length());
|
||
size_type strLen = length() - nStart;
|
||
nLen = strLen < nLen ? strLen : nLen;
|
||
|
||
size_t pos, len;
|
||
PosLenToImpl(nStart, nLen, &pos, &len);
|
||
|
||
return ::wxDoCmp(m_impl.data() + pos, len,
|
||
str.m_impl.data(), str.m_impl.length());
|
||
}
|
||
|
||
int wxString::compare(size_t nStart, size_t nLen,
|
||
const wxString& str,
|
||
size_t nStart2, size_t nLen2) const
|
||
{
|
||
wxASSERT(nStart <= length());
|
||
wxASSERT(nStart2 <= str.length());
|
||
size_type strLen = length() - nStart,
|
||
strLen2 = str.length() - nStart2;
|
||
nLen = strLen < nLen ? strLen : nLen;
|
||
nLen2 = strLen2 < nLen2 ? strLen2 : nLen2;
|
||
|
||
size_t pos, len;
|
||
PosLenToImpl(nStart, nLen, &pos, &len);
|
||
size_t pos2, len2;
|
||
str.PosLenToImpl(nStart2, nLen2, &pos2, &len2);
|
||
|
||
return ::wxDoCmp(m_impl.data() + pos, len,
|
||
str.m_impl.data() + pos2, len2);
|
||
}
|
||
|
||
int wxString::compare(const char* sz) const
|
||
{
|
||
SubstrBufFromMB str(ImplStr(sz, npos));
|
||
if ( str.len == npos )
|
||
str.len = wxStringStrlen(str.data);
|
||
return ::wxDoCmp(m_impl.data(), m_impl.length(), str.data, str.len);
|
||
}
|
||
|
||
int wxString::compare(const wchar_t* sz) const
|
||
{
|
||
SubstrBufFromWC str(ImplStr(sz, npos));
|
||
if ( str.len == npos )
|
||
str.len = wxStringStrlen(str.data);
|
||
return ::wxDoCmp(m_impl.data(), m_impl.length(), str.data, str.len);
|
||
}
|
||
|
||
int wxString::compare(size_t nStart, size_t nLen,
|
||
const char* sz, size_t nCount) const
|
||
{
|
||
wxASSERT(nStart <= length());
|
||
size_type strLen = length() - nStart;
|
||
nLen = strLen < nLen ? strLen : nLen;
|
||
|
||
size_t pos, len;
|
||
PosLenToImpl(nStart, nLen, &pos, &len);
|
||
|
||
SubstrBufFromMB str(ImplStr(sz, nCount));
|
||
if ( str.len == npos )
|
||
str.len = wxStringStrlen(str.data);
|
||
|
||
return ::wxDoCmp(m_impl.data() + pos, len, str.data, str.len);
|
||
}
|
||
|
||
int wxString::compare(size_t nStart, size_t nLen,
|
||
const wchar_t* sz, size_t nCount) const
|
||
{
|
||
wxASSERT(nStart <= length());
|
||
size_type strLen = length() - nStart;
|
||
nLen = strLen < nLen ? strLen : nLen;
|
||
|
||
size_t pos, len;
|
||
PosLenToImpl(nStart, nLen, &pos, &len);
|
||
|
||
SubstrBufFromWC str(ImplStr(sz, nCount));
|
||
if ( str.len == npos )
|
||
str.len = wxStringStrlen(str.data);
|
||
|
||
return ::wxDoCmp(m_impl.data() + pos, len, str.data, str.len);
|
||
}
|
||
|
||
#endif // HAVE_STD_STRING_COMPARE/!HAVE_STD_STRING_COMPARE
|
||
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// find_{first,last}_[not]_of functions
|
||
// ---------------------------------------------------------------------------
|
||
|
||
#if !wxUSE_STL_BASED_WXSTRING || wxUSE_UNICODE_UTF8
|
||
|
||
// NB: All these functions are implemented with the argument being wxChar*,
|
||
// i.e. widechar string in any Unicode build, even though native string
|
||
// representation is char* in the UTF-8 build. 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(), _T("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(), _T("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, _T("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, _T("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(), _T("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, _T("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 and char* in ANSI build; below are implementations for the other
|
||
// version:
|
||
#if wxUSE_UNICODE
|
||
#define wxOtherCharType char
|
||
#define STRCONV (const wxChar*)wxConvLibc.cMB2WC
|
||
#else
|
||
#define wxOtherCharType wchar_t
|
||
#define STRCONV (const wxChar*)wxConvLibc.cWC2MB
|
||
#endif
|
||
|
||
size_t wxString::find_first_of(const wxOtherCharType* sz, size_t nStart) const
|
||
{ return find_first_of(STRCONV(sz), nStart); }
|
||
|
||
size_t wxString::find_first_of(const wxOtherCharType* sz, size_t nStart,
|
||
size_t n) const
|
||
{ return find_first_of(STRCONV(sz, n, NULL), nStart, n); }
|
||
size_t wxString::find_last_of(const wxOtherCharType* sz, size_t nStart) const
|
||
{ return find_last_of(STRCONV(sz), nStart); }
|
||
size_t wxString::find_last_of(const wxOtherCharType* sz, size_t nStart,
|
||
size_t n) const
|
||
{ return find_last_of(STRCONV(sz, n, NULL), nStart, n); }
|
||
size_t wxString::find_first_not_of(const wxOtherCharType* sz, size_t nStart) const
|
||
{ return find_first_not_of(STRCONV(sz), nStart); }
|
||
size_t wxString::find_first_not_of(const wxOtherCharType* sz, size_t nStart,
|
||
size_t n) const
|
||
{ return find_first_not_of(STRCONV(sz, n, NULL), nStart, n); }
|
||
size_t wxString::find_last_not_of(const wxOtherCharType* sz, size_t nStart) const
|
||
{ return find_last_not_of(STRCONV(sz), nStart); }
|
||
size_t wxString::find_last_not_of(const wxOtherCharType* sz, size_t nStart,
|
||
size_t n) const
|
||
{ return find_last_not_of(STRCONV(sz, n, NULL), nStart, n); }
|
||
|
||
#undef wxOtherCharType
|
||
#undef STRCONV
|
||
|
||
#endif // !wxUSE_STL_BASED_WXSTRING || wxUSE_UNICODE_UTF8
|
||
|
||
// ===========================================================================
|
||
// other common string functions
|
||
// ===========================================================================
|
||
|
||
int wxString::CmpNoCase(const wxString& s) const
|
||
{
|
||
// FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
|
||
|
||
size_t idx = 0;
|
||
const_iterator i1 = begin();
|
||
const_iterator end1 = end();
|
||
const_iterator i2 = s.begin();
|
||
const_iterator end2 = s.end();
|
||
|
||
for ( ; i1 != end1 && i2 != end2; ++idx, ++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;
|
||
}
|
||
|
||
|
||
#if wxUSE_UNICODE
|
||
|
||
#ifdef __MWERKS__
|
||
#ifndef __SCHAR_MAX__
|
||
#define __SCHAR_MAX__ 127
|
||
#endif
|
||
#endif
|
||
|
||
wxString wxString::FromAscii(const char *ascii, size_t len)
|
||
{
|
||
if (!ascii || len == 0)
|
||
return wxEmptyString;
|
||
|
||
wxString res;
|
||
|
||
{
|
||
wxStringInternalBuffer buf(res, len);
|
||
wxStringCharType *dest = buf;
|
||
|
||
for ( ; len > 0; --len )
|
||
{
|
||
unsigned char c = (unsigned char)*ascii++;
|
||
wxASSERT_MSG( c < 0x80,
|
||
_T("Non-ASCII value passed to FromAscii().") );
|
||
|
||
*dest++ = (wchar_t)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, _T("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 wxCharBuffer wxString::ToAscii() 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 : '_';
|
||
|
||
// 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;
|
||
}
|
||
|
||
#endif // wxUSE_UNICODE
|
||
|
||
// 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 + nCount > nLen )
|
||
{
|
||
nCount = nLen - nFirst;
|
||
}
|
||
|
||
if ( nFirst > nLen )
|
||
{
|
||
// AllocCopy() will return empty string
|
||
return wxEmptyString;
|
||
}
|
||
|
||
wxString dest(*this, nFirst, nCount);
|
||
if ( dest.length() != nCount )
|
||
{
|
||
wxFAIL_MSG( _T("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( _T("out of memory in wxString::Right") );
|
||
}
|
||
return dest;
|
||
}
|
||
|
||
// get all characters after the last occurence 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 = wx_str() + iPos + 1;
|
||
|
||
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( _T("out of memory in wxString::Left") );
|
||
}
|
||
return dest;
|
||
}
|
||
|
||
// get all characters before the first occurence of ch
|
||
// (returns the whole string if ch not found)
|
||
wxString wxString::BeforeFirst(wxUniChar ch) const
|
||
{
|
||
int iPos = Find(ch);
|
||
if ( iPos == wxNOT_FOUND ) iPos = length();
|
||
return wxString(*this, 0, iPos);
|
||
}
|
||
|
||
/// get all characters before the last occurence of ch
|
||
/// (returns empty string if ch not found)
|
||
wxString wxString::BeforeLast(wxUniChar ch) const
|
||
{
|
||
wxString str;
|
||
int iPos = Find(ch, true);
|
||
if ( iPos != wxNOT_FOUND && iPos != 0 )
|
||
str = wxString(c_str(), iPos);
|
||
|
||
return str;
|
||
}
|
||
|
||
/// get all characters after the first occurence 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 = wx_str() + iPos + 1;
|
||
|
||
return str;
|
||
}
|
||
|
||
// replace first (or all) occurences 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,
|
||
_T("wxString::Replace(): invalid parameter") );
|
||
|
||
size_t uiCount = 0; // count of replacements made
|
||
|
||
size_t uiOldLen = strOld.length();
|
||
size_t uiNewLen = strNew.length();
|
||
|
||
size_t dwPos = 0;
|
||
|
||
while ( (*this)[dwPos] != wxT('\0') )
|
||
{
|
||
//DO NOT USE STRSTR HERE
|
||
//this string can contain embedded null characters,
|
||
//so strstr will function incorrectly
|
||
dwPos = find(strOld, dwPos);
|
||
if ( dwPos == npos )
|
||
break; // exit the loop
|
||
else
|
||
{
|
||
//replace this occurance of the old string with the new one
|
||
replace(dwPos, uiOldLen, strNew, uiNewLen);
|
||
|
||
//move up pos past the string that was replaced
|
||
dwPos += uiNewLen;
|
||
|
||
//increase replace count
|
||
++uiCount;
|
||
|
||
// stop now?
|
||
if ( !bReplaceAll )
|
||
break; // exit the loop
|
||
}
|
||
}
|
||
|
||
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 == _T('-') || *i == _T('+') )
|
||
++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;
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// trimming and padding
|
||
// ---------------------------------------------------------------------------
|
||
|
||
// some compilers (VC++ 6.0 not to name them) return true for a call to
|
||
// isspace('<27>') 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());
|
||
}
|
||
//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
|
||
// ----------------------------------------------------------------------------
|
||
|
||
// The implementation of all the functions below is exactly the same so factor
|
||
// it out. Note that number extraction works correctly on UTF-8 strings, so
|
||
// we can use wxStringCharType and wx_str() for maximum efficiency.
|
||
|
||
#ifndef __WXWINCE__
|
||
#define DO_IF_NOT_WINCE(x) x
|
||
#else
|
||
#define DO_IF_NOT_WINCE(x)
|
||
#endif
|
||
|
||
#define WX_STRING_TO_INT_TYPE(val, base, func) \
|
||
wxCHECK_MSG( val, false, _T("NULL output pointer") ); \
|
||
wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") ); \
|
||
\
|
||
DO_IF_NOT_WINCE( errno = 0; ) \
|
||
\
|
||
const wxStringCharType *start = wx_str(); \
|
||
wxStringCharType *end; \
|
||
*val = func(start, &end, base); \
|
||
\
|
||
/* return true only if scan was stopped by the terminating NUL and */ \
|
||
/* if the string was not empty to start with and no under/overflow */ \
|
||
/* occurred: */ \
|
||
return !*end && (end != start) \
|
||
DO_IF_NOT_WINCE( && (errno != ERANGE) )
|
||
|
||
bool wxString::ToLong(long *val, int base) const
|
||
{
|
||
WX_STRING_TO_INT_TYPE(val, base, wxStrtol);
|
||
}
|
||
|
||
bool wxString::ToULong(unsigned long *val, int base) const
|
||
{
|
||
WX_STRING_TO_INT_TYPE(val, base, wxStrtoul);
|
||
}
|
||
|
||
bool wxString::ToLongLong(wxLongLong_t *val, int base) const
|
||
{
|
||
WX_STRING_TO_INT_TYPE(val, base, wxStrtoll);
|
||
}
|
||
|
||
bool wxString::ToULongLong(wxULongLong_t *val, int base) const
|
||
{
|
||
WX_STRING_TO_INT_TYPE(val, base, wxStrtoull);
|
||
}
|
||
|
||
bool wxString::ToDouble(double *val) const
|
||
{
|
||
wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToDouble") );
|
||
|
||
#ifndef __WXWINCE__
|
||
errno = 0;
|
||
#endif
|
||
|
||
const wxChar *start = c_str();
|
||
wxChar *end;
|
||
*val = wxStrtod(start, &end);
|
||
|
||
// return true only if scan was stopped by the terminating NUL and if the
|
||
// string was not empty to start with and no under/overflow occurred
|
||
return !*end && (end != start)
|
||
#ifndef __WXWINCE__
|
||
&& (errno != ERANGE)
|
||
#endif
|
||
;
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// formatted output
|
||
// ---------------------------------------------------------------------------
|
||
|
||
#if !wxUSE_UTF8_LOCALE_ONLY
|
||
/* static */
|
||
#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
|
||
wxString wxStringPrintfMixinBase::DoFormatWchar(const wxChar *format, ...)
|
||
#else
|
||
wxString wxString::DoFormatWchar(const wxChar *format, ...)
|
||
#endif
|
||
{
|
||
va_list argptr;
|
||
va_start(argptr, format);
|
||
|
||
wxString s;
|
||
s.PrintfV(format, argptr);
|
||
|
||
va_end(argptr);
|
||
|
||
return s;
|
||
}
|
||
#endif // !wxUSE_UTF8_LOCALE_ONLY
|
||
|
||
#if wxUSE_UNICODE_UTF8
|
||
/* static */
|
||
wxString wxString::DoFormatUtf8(const char *format, ...)
|
||
{
|
||
va_list argptr;
|
||
va_start(argptr, format);
|
||
|
||
wxString s;
|
||
s.PrintfV(format, argptr);
|
||
|
||
va_end(argptr);
|
||
|
||
return s;
|
||
}
|
||
#endif // wxUSE_UNICODE_UTF8
|
||
|
||
/* static */
|
||
wxString wxString::FormatV(const wxString& format, va_list argptr)
|
||
{
|
||
wxString s;
|
||
s.PrintfV(format, argptr);
|
||
return s;
|
||
}
|
||
|
||
#if !wxUSE_UTF8_LOCALE_ONLY
|
||
#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
|
||
int wxStringPrintfMixinBase::DoPrintfWchar(const wxChar *format, ...)
|
||
#else
|
||
int wxString::DoPrintfWchar(const wxChar *format, ...)
|
||
#endif
|
||
{
|
||
va_list argptr;
|
||
va_start(argptr, format);
|
||
|
||
#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
|
||
// get a pointer to the wxString instance; we have to use dynamic_cast<>
|
||
// because it's the only cast that works safely for downcasting when
|
||
// multiple inheritance is used:
|
||
wxString *str = static_cast<wxString*>(this);
|
||
#else
|
||
wxString *str = this;
|
||
#endif
|
||
|
||
int iLen = str->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(format, argptr);
|
||
|
||
va_end(argptr);
|
||
|
||
return iLen;
|
||
}
|
||
#endif // wxUSE_UNICODE_UTF8
|
||
|
||
#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)
|
||
{
|
||
int size = 1024;
|
||
|
||
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
|
||
|
||
// in UTF-8 build, leaving uninitialized junk in the buffer
|
||
// could result in invalid non-empty UTF-8 string, so just
|
||
// reset the string to empty on failure:
|
||
buf[0] = '\0';
|
||
return -1;
|
||
}
|
||
|
||
// wxVsnprintf() may modify the original arg pointer, so pass it
|
||
// only a copy
|
||
va_list argptrcopy;
|
||
wxVaCopy(argptrcopy, argptr);
|
||
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
|
||
buf[size] = _T('\0');
|
||
|
||
// vsnprintf() may return either -1 (traditional Unix behaviour) or the
|
||
// total number of characters which would have been written if the
|
||
// buffer were large enough (newer standards such as Unix98)
|
||
if ( len < 0 )
|
||
{
|
||
// NB: wxVsnprintf() may call either wxCRT_VsnprintfW or
|
||
// wxCRT_VsnprintfA in UTF-8 build; wxUSE_WXVSNPRINTF
|
||
// is true if *both* of them use our own implementation,
|
||
// otherwise we can't be sure
|
||
#if wxUSE_WXVSNPRINTF
|
||
// we know that our own implementation of wxVsnprintf() returns -1
|
||
// only for a format error - thus there's something wrong with
|
||
// the user's format string
|
||
buf[0] = '\0';
|
||
return -1;
|
||
#else // possibly using system version
|
||
// 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
|
||
size *= 2;
|
||
#endif // wxUSE_WXVSNPRINTF/!wxUSE_WXVSNPRINTF
|
||
}
|
||
else if ( len >= size )
|
||
{
|
||
#if wxUSE_WXVSNPRINTF
|
||
// we know that our own implementation of wxVsnprintf() returns
|
||
// size+1 when there's not enough space but that's not the size
|
||
// of the required buffer!
|
||
size *= 2; // so we just double the current size of the buffer
|
||
#else
|
||
// some vsnprintf() implementations NUL-terminate the buffer and
|
||
// some don't in len == size case, to be safe always add 1
|
||
size = len + 1;
|
||
#endif
|
||
}
|
||
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_UNICODE_UTF8
|
||
#if wxUSE_STL_BASED_WXSTRING
|
||
typedef wxStringTypeBuffer<char> Utf8Buffer;
|
||
#else
|
||
typedef wxStringInternalBuffer Utf8Buffer;
|
||
#endif
|
||
#endif
|
||
|
||
#if wxUSE_UTF8_LOCALE_ONLY
|
||
return DoStringPrintfV<Utf8Buffer>(*this, format, argptr);
|
||
#else
|
||
#if wxUSE_UNICODE_UTF8
|
||
if ( wxLocaleIsUtf8 )
|
||
return DoStringPrintfV<Utf8Buffer>(*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 += _T('^');
|
||
while ( *pszMask )
|
||
{
|
||
switch ( *pszMask )
|
||
{
|
||
case _T('?'):
|
||
pattern += _T('.');
|
||
break;
|
||
|
||
case _T('*'):
|
||
pattern += _T(".*");
|
||
break;
|
||
|
||
case _T('^'):
|
||
case _T('.'):
|
||
case _T('$'):
|
||
case _T('('):
|
||
case _T(')'):
|
||
case _T('|'):
|
||
case _T('+'):
|
||
case _T('\\'):
|
||
// these characters are special in a RE, quote them
|
||
// (however note that we don't quote '[' and ']' to allow
|
||
// using them for Unix shell like matching)
|
||
pattern += _T('\\');
|
||
// fall through
|
||
|
||
default:
|
||
pattern += *pszMask;
|
||
}
|
||
|
||
pszMask++;
|
||
}
|
||
pattern += _T('$');
|
||
|
||
// 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
|
||
wxWCharBuffer maskBuf = mask.wc_str();
|
||
wxWCharBuffer 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 = NULL;
|
||
const wxChar *pszLastStarInMask = NULL;
|
||
|
||
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 != NULL ) {
|
||
// 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 == NULL )
|
||
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 = NULL;
|
||
|
||
// 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;
|
||
}
|
||
|
||
// convert to upper case, return the copy of the string
|
||
wxString wxString::Upper() const
|
||
{ wxString s(*this); return s.MakeUpper(); }
|
||
|
||
// convert to lower case, return the copy of the string
|
||
wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }
|
||
|
||
// ----------------------------------------------------------------------------
|
||
// wxUTF8StringBuffer
|
||
// ----------------------------------------------------------------------------
|
||
|
||
#if wxUSE_UNICODE_WCHAR
|
||
wxUTF8StringBuffer::~wxUTF8StringBuffer()
|
||
{
|
||
wxMBConvStrictUTF8 conv;
|
||
size_t wlen = conv.ToWChar(NULL, 0, m_buf);
|
||
wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
|
||
|
||
wxStringInternalBuffer wbuf(m_str, wlen);
|
||
conv.ToWChar(wbuf, wlen, m_buf);
|
||
}
|
||
|
||
wxUTF8StringBufferLength::~wxUTF8StringBufferLength()
|
||
{
|
||
wxCHECK_RET(m_lenSet, "length not set");
|
||
|
||
wxMBConvStrictUTF8 conv;
|
||
size_t wlen = conv.ToWChar(NULL, 0, m_buf, m_len);
|
||
wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
|
||
|
||
wxStringInternalBufferLength wbuf(m_str, wlen);
|
||
conv.ToWChar(wbuf, wlen, m_buf, m_len);
|
||
wbuf.SetLength(wlen);
|
||
}
|
||
#endif // wxUSE_UNICODE_WCHAR
|