467175ab3f
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45533 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/unichar.cpp
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// Purpose: wxUniChar and wxUniCharRef classes
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// Author: Vaclav Slavik
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// Created: 2007-03-19
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// RCS-ID: $Id$
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// Copyright: (c) 2007 REA Elektronik GmbH
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// headers
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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/strconv.h" // wxConvLibc
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#endif
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#include "wx/unichar.h"
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#include "wx/stringops.h"
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// ===========================================================================
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// implementation
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// wxUniChar
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// ---------------------------------------------------------------------------
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/* static */
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wxUniChar::value_type wxUniChar::From8bit(char c)
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{
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// all supported charsets have the first 128 characters same as ASCII:
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if ( (unsigned char)c < 0x80 )
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return c;
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wchar_t buf[2];
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if ( wxConvLibc.ToWChar(buf, 2, &c, 1) != 2 )
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return wxT('?'); // FIXME-UTF8: what to use as failure character?
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return buf[0];
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}
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/* static */
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char wxUniChar::To8bit(wxUniChar::value_type c)
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{
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// all supported charsets have the first 128 characters same as ASCII:
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if ( c < 0x80 )
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return c;
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wchar_t in = c;
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char buf[2];
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if ( wxConvLibc.FromWChar(buf, 2, &in, 1) != 2 )
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return '?'; // FIXME-UTF8: what to use as failure character?
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return buf[0];
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}
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// ---------------------------------------------------------------------------
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// wxUniCharRef
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// ---------------------------------------------------------------------------
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#if wxUSE_UNICODE_UTF8
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wxUniChar wxUniCharRef::UniChar() const
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{
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return wxStringOperations::DecodeChar(m_pos);
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}
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wxUniCharRef& wxUniCharRef::operator=(const wxUniChar& c)
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{
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wxStringOperations::Utf8CharBuffer utf(wxStringOperations::EncodeChar(c));
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size_t lenOld = wxStringOperations::GetUtf8CharLength(*m_pos);
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size_t lenNew = wxStringOperations::GetUtf8CharLength(utf[0]);
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if ( lenNew == lenOld )
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{
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iterator pos(m_pos);
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for ( size_t i = 0; i < lenNew; ++i, ++pos )
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*pos = utf[i];
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}
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else
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{
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size_t idx = m_pos - m_str.begin();
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m_str.replace(m_pos, m_pos + lenOld, utf, lenNew);
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// this is needed to keep m_pos valid:
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m_pos = m_str.begin() + idx;
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}
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return *this;
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}
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#endif // wxUSE_UNICODE_UTF8
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