e5ea3f7a96
added symbol __WXGTK12__ (do not use GTK_MINOR_VERSION in your code
as this is undefined anywhere outside wxGTK itself)
updated wxGTK.spec for local builds
fixed clipboard clear/setdata race
test for wxConvLocal in dialogs sample
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2291 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1055 lines
39 KiB
C++
1055 lines
39 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: string.h
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// Purpose: wxString and wxArrayString classes
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// Author: Vadim Zeitlin
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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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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXSTRINGH__
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#define _WX_WXSTRINGH__
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#ifdef __GNUG__
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#pragma interface "string.h"
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#endif
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#ifdef __WXMAC__
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#include <ctype.h>
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#endif
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <limits.h>
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#include <stdlib.h>
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#ifdef HAVE_STRINGS_H
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#include <strings.h> // for strcasecmp()
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#endif // AIX
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#ifndef WX_PRECOMP
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#include "wx/defs.h"
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#ifdef WXSTRING_IS_WXOBJECT
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#include "wx/object.h"
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#endif
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#endif // !PCH
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#include "wx/debug.h"
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#include "wx/wxchar.h"
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#include "wx/buffer.h"
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/*
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Efficient string class [more or less] compatible with MFC CString,
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wxWindows version 1 wxString and std::string and some handy functions
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missing from string.h.
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*/
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// ---------------------------------------------------------------------------
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// macros
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// ---------------------------------------------------------------------------
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// compile the std::string compatibility functions if defined
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#define wxSTD_STRING_COMPATIBILITY
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// define to derive wxString from wxObject
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#ifdef WXSTRING_IS_WXOBJECT
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#undef WXSTRING_IS_WXOBJECT
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#endif
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// maximum possible length for a string means "take all string" everywhere
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// (as sizeof(StringData) is unknown here we substract 100)
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const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
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// 'naughty' cast
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#define WXSTRINGCAST (wxChar *)(const wxChar *)
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#define WXCSTRINGCAST (wxChar *)(const wxChar *)
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#define MBSTRINGCAST (char *)(const char *)
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#define WCSTRINGCAST (wchar_t *)(const wchar_t *)
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// implementation only
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#define ASSERT_VALID_INDEX(i) wxASSERT( (unsigned)(i) <= Len() )
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// ---------------------------------------------------------------------------
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// Global functions complementing standard C string library replacements for
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// strlen() and portable strcasecmp()
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//---------------------------------------------------------------------------
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// USE wx* FUNCTIONS IN wx/wxchar.h INSTEAD - THIS IS ONLY FOR BINARY COMPATIBILITY
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// checks whether the passed in pointer is NULL and if the string is empty
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inline bool WXDLLEXPORT IsEmpty(const char *p) { return (!p || !*p); }
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// safe version of strlen() (returns 0 if passed NULL pointer)
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inline size_t WXDLLEXPORT Strlen(const char *psz)
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{ return psz ? strlen(psz) : 0; }
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// portable strcasecmp/_stricmp
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inline int WXDLLEXPORT Stricmp(const char *psz1, const char *psz2)
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{
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#if defined(__VISUALC__) || ( defined(__MWERKS__) && defined(__INTEL__) )
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return _stricmp(psz1, psz2);
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#elif defined(__SC__)
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return _stricmp(psz1, psz2);
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#elif defined(__SALFORDC__)
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return stricmp(psz1, psz2);
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#elif defined(__BORLANDC__)
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return stricmp(psz1, psz2);
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#elif defined(__WATCOMC__)
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return stricmp(psz1, psz2);
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#elif defined(__UNIX__) || defined(__GNUWIN32__)
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return strcasecmp(psz1, psz2);
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#elif defined(__MWERKS__) && !defined(__INTEL__)
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register char c1, c2;
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do {
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c1 = tolower(*psz1++);
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c2 = tolower(*psz2++);
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} while ( c1 && (c1 == c2) );
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return c1 - c2;
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#else
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// almost all compilers/libraries provide this function (unfortunately under
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// different names), that's why we don't implement our own which will surely
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// be more efficient than this code (uncomment to use):
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/*
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register char c1, c2;
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do {
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c1 = tolower(*psz1++);
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c2 = tolower(*psz2++);
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} while ( c1 && (c1 == c2) );
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return c1 - c2;
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*/
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#error "Please define string case-insensitive compare for your OS/compiler"
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#endif // OS/compiler
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}
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// ----------------------------------------------------------------------------
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// global data
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// ----------------------------------------------------------------------------
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WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
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// global pointer to empty string
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WXDLLEXPORT_DATA(extern const wxChar*) g_szNul;
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// return an empty wxString
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class WXDLLEXPORT wxString; // not yet defined
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inline const wxString& wxGetEmptyString() { return *(wxString *)&g_szNul; }
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// ---------------------------------------------------------------------------
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// string data prepended with some housekeeping info (used by wxString class),
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// is never used directly (but had to be put here to allow inlining)
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// ---------------------------------------------------------------------------
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struct WXDLLEXPORT wxStringData
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{
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int nRefs; // reference count
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size_t nDataLength, // actual string length
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nAllocLength; // allocated memory size
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// mimics declaration 'wxChar data[nAllocLength]'
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wxChar* data() const { return (wxChar*)(this + 1); }
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// empty string has a special ref count so it's never deleted
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bool IsEmpty() const { return (nRefs == -1); }
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bool IsShared() const { return (nRefs > 1); }
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// lock/unlock
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void Lock() { if ( !IsEmpty() ) nRefs++; }
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void Unlock() { if ( !IsEmpty() && --nRefs == 0) free(this); }
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// if we had taken control over string memory (GetWriteBuf), it's
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// intentionally put in invalid state
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void Validate(bool b) { nRefs = (b ? 1 : 0); }
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bool IsValid() const { return (nRefs != 0); }
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};
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// ---------------------------------------------------------------------------
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// types of multibyte<->Unicode conversions
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// ---------------------------------------------------------------------------
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#if wxUSE_WCHAR_T
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class WXDLLEXPORT wxMBConv
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{
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public:
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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const wxWCharBuffer cMB2WC(const char *psz) const
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{
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if (psz) {
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size_t nLen = MB2WC((wchar_t *) NULL, psz, 0);
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wxWCharBuffer buf(nLen);
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MB2WC(WCSTRINGCAST buf, psz, nLen);
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return buf;
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} else return wxWCharBuffer((wchar_t *) NULL);
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}
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const wxCharBuffer cWC2MB(const wchar_t *psz) const
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{
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if (psz) {
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size_t nLen = WC2MB((char *) NULL, psz, 0);
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wxCharBuffer buf(nLen);
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WC2MB(MBSTRINGCAST buf, psz, nLen);
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return buf;
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} else return wxCharBuffer((char *) NULL);
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}
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#if wxUSE_UNICODE
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const wxWCharBuffer cMB2WX(const char *psz) const { return cMB2WC(psz); }
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const wxCharBuffer cWX2MB(const wchar_t *psz) const { return cWC2MB(psz); }
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const wchar_t* cWC2WX(const wchar_t *psz) const { return psz; }
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const wchar_t* cMB2WC(const wchar_t *psz) const { return psz; }
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#else
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const char* cMB2WX(const char *psz) const { return psz; }
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const char* cWX2MB(const char *psz) const { return psz; }
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const wxCharBuffer cWC2WX(const wchar_t *psz) const { return cWC2MB(psz); }
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const wxWCharBuffer cWX2WC(const char *psz) const { return cMB2WC(psz); }
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#endif
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};
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WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc;
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#define wxConv_libc wxConvLibc
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#define wxANOTHER_MBCONV(type) \
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class type : public wxMBConv { \
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public: \
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const; \
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const; \
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}
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WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConvFile)) wxConvFile;
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#define wxConv_file wxConvFile
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WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConvUTF7)) wxConvUTF7;
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WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConvUTF8)) wxConvUTF8;
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#define wxConv_UTF8 wxConvUTF8
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#if defined(__WXGTK12__)
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WXDLLEXPORT_DATA(extern wxANOTHER_MBCONV(wxMBConvGdk)) wxConvGdk;
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#define wxConv_gdk wxConvGdk
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#endif // GTK > 1.0
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class wxCharacterSet;
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class WXDLLEXPORT wxCSConv : public wxMBConv
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{
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private:
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wxChar *m_name;
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wxCharacterSet *m_cset;
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bool m_deferred;
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void SetName(const wxChar *charset);
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public:
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wxCSConv(const wxChar *charset);
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virtual ~wxCSConv();
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void LoadNow();
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virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
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virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
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};
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WXDLLEXPORT_DATA(extern wxCSConv) wxConvLocal;
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#define wxConv_local wxConvLocal
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WXDLLEXPORT_DATA(extern wxMBConv *) wxConvCurrent;
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#define wxConv_current wxConvCurrent
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// filenames are multibyte on Unix and probably widechar on Windows?
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#if defined(__UNIX__) || defined(__BORLANDC__)
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#define wxMBFILES 1
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#else
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#define wxMBFILES 0
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#endif
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#if wxMBFILES
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#define wxFNCONV(name) wxConvFile.cWX2MB(name)
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#define FNSTRINGCAST MBSTRINGCAST
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#else
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#define wxFNCONV(name) name
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#define FNSTRINGCAST WXSTRINGCAST
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#endif
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#else//!wxUSE_WCHAR_T
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class WXDLLEXPORT wxMBConv {};
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WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc;
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#endif//wxUSE_WCHAR_T
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// ---------------------------------------------------------------------------
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// This is (yet another one) String class for C++ programmers. It doesn't use
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// any of "advanced" C++ features (i.e. templates, exceptions, namespaces...)
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// thus you should be able to compile it with practicaly any C++ compiler.
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// This class uses copy-on-write technique, i.e. identical strings share the
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// same memory as long as neither of them is changed.
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//
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// This class aims to be as compatible as possible with the new standard
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// std::string class, but adds some additional functions and should be at
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// least as efficient than the standard implementation.
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//
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// Performance note: it's more efficient to write functions which take "const
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// String&" arguments than "const char *" if you assign the argument to
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// another string.
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//
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// It was compiled and tested under Win32, Linux (libc 5 & 6), Solaris 5.5.
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//
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// To do:
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// - ressource support (string tables in ressources)
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// - more wide character (UNICODE) support
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// - regular expressions support
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// ---------------------------------------------------------------------------
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#ifdef WXSTRING_IS_WXOBJECT
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class WXDLLEXPORT wxString : public wxObject
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{
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DECLARE_DYNAMIC_CLASS(wxString)
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#else //WXSTRING_IS_WXOBJECT
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class WXDLLEXPORT wxString
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{
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#endif //WXSTRING_IS_WXOBJECT
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friend class WXDLLEXPORT wxArrayString;
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// NB: special care was taken in arranging the member functions in such order
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// that all inline functions can be effectively inlined, verify that all
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// performace critical functions are still inlined if you change order!
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private:
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// points to data preceded by wxStringData structure with ref count info
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wxChar *m_pchData;
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// accessor to string data
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wxStringData* GetStringData() const { return (wxStringData*)m_pchData - 1; }
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// string (re)initialization functions
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// initializes the string to the empty value (must be called only from
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// ctors, use Reinit() otherwise)
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void Init() { m_pchData = (wxChar *)g_szNul; }
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// initializaes the string with (a part of) C-string
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void InitWith(const wxChar *psz, size_t nPos = 0, size_t nLen = wxSTRING_MAXLEN);
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// as Init, but also frees old data
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void Reinit() { GetStringData()->Unlock(); Init(); }
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// memory allocation
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// allocates memory for string of lenght nLen
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void AllocBuffer(size_t nLen);
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// copies data to another string
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void AllocCopy(wxString&, int, int) const;
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// effectively copies data to string
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void AssignCopy(size_t, const wxChar *);
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// append a (sub)string
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void ConcatSelf(int nLen, const wxChar *src);
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// functions called before writing to the string: they copy it if there
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// are other references to our data (should be the only owner when writing)
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void CopyBeforeWrite();
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void AllocBeforeWrite(size_t);
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// this method is not implemented - there is _no_ conversion from int to
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// string, you're doing something wrong if the compiler wants to call it!
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//
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// try `s << i' or `s.Printf("%d", i)' instead
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wxString(int);
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wxString(long);
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public:
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// constructors and destructor
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// ctor for an empty string
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wxString() { Init(); }
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// copy ctor
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wxString(const wxString& stringSrc)
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{
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wxASSERT( stringSrc.GetStringData()->IsValid() );
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if ( stringSrc.IsEmpty() ) {
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// nothing to do for an empty string
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Init();
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}
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else {
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m_pchData = stringSrc.m_pchData; // share same data
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GetStringData()->Lock(); // => one more copy
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}
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}
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// string containing nRepeat copies of ch
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wxString(wxChar ch, size_t nRepeat = 1);
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// ctor takes first nLength characters from C string
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// (default value of wxSTRING_MAXLEN means take all the string)
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wxString(const wxChar *psz, size_t nLength = wxSTRING_MAXLEN)
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{ InitWith(psz, 0, nLength); }
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#if wxUSE_UNICODE
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// from multibyte string
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// (NB: nLength is right now number of Unicode characters, not
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// characters in psz! So try not to use it yet!)
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wxString(const char *psz, wxMBConv& conv = wxConvLibc, size_t nLength = wxSTRING_MAXLEN);
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// from wxWCharBuffer (i.e. return from wxGetString)
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wxString(const wxWCharBuffer& psz)
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{ InitWith(psz, 0, wxSTRING_MAXLEN); }
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#else
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// from C string (for compilers using unsigned char)
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wxString(const unsigned char* psz, size_t nLength = wxSTRING_MAXLEN)
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{ InitWith((const char*)psz, 0, nLength); }
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// from multibyte string
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wxString(const char *psz, wxMBConv& WXUNUSED(conv), size_t nLength = wxSTRING_MAXLEN)
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{ InitWith(psz, 0, nLength); }
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#if wxUSE_WCHAR_T
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// from wide (Unicode) string
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wxString(const wchar_t *pwz);
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#endif
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// from wxCharBuffer
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wxString(const wxCharBuffer& psz)
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{ InitWith(psz, 0, wxSTRING_MAXLEN); }
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#endif
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// dtor is not virtual, this class must not be inherited from!
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~wxString() { GetStringData()->Unlock(); }
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// generic attributes & operations
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// as standard strlen()
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size_t Len() const { return GetStringData()->nDataLength; }
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// string contains any characters?
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bool IsEmpty() const { return Len() == 0; }
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// empty string is "FALSE", so !str will return TRUE
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bool operator!() const { return IsEmpty(); }
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// empty string contents
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void Empty()
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{
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if ( !IsEmpty() )
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Reinit();
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// should be empty
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wxASSERT( GetStringData()->nDataLength == 0 );
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}
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// empty the string and free memory
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void Clear()
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{
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if ( !GetStringData()->IsEmpty() )
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Reinit();
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wxASSERT( GetStringData()->nDataLength == 0 ); // should be empty
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wxASSERT( GetStringData()->nAllocLength == 0 ); // and not own any memory
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}
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// contents test
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// Is an ascii value
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bool IsAscii() const;
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// Is a number
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bool IsNumber() const;
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// Is a word
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bool IsWord() const;
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// data access (all indexes are 0 based)
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// read access
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wxChar GetChar(size_t n) const
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{ ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
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// read/write access
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wxChar& GetWritableChar(size_t n)
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{ ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
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// write access
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void SetChar(size_t n, wxChar ch)
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{ ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); m_pchData[n] = ch; }
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// get last character
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wxChar Last() const
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{ wxASSERT( !IsEmpty() ); return m_pchData[Len() - 1]; }
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// get writable last character
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wxChar& Last()
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{ wxASSERT( !IsEmpty() ); CopyBeforeWrite(); return m_pchData[Len()-1]; }
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// under Unix it is tested with configure, assume it works on other
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// platforms (there might be overloading problems if size_t and int are
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// the same type)
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#if !defined(__UNIX__) || wxUSE_SIZE_T_STRING_OPERATOR
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// operator version of GetChar
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wxChar operator[](size_t n) const
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{ ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
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#endif
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// operator version of GetChar
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wxChar operator[](int n) const
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{ ASSERT_VALID_INDEX( n ); return m_pchData[n]; }
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// operator version of GetWritableChar
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wxChar& operator[](size_t n)
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{ ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; }
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// implicit conversion to C string
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operator const wxChar*() const { return m_pchData; }
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// explicit conversion to C string (use this with printf()!)
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const wxChar* c_str() const { return m_pchData; }
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// (and this with [wx]Printf()!)
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const wxChar* wx_str() const { return m_pchData; }
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//
|
|
const wxChar* GetData() const { return m_pchData; }
|
|
#if wxUSE_UNICODE
|
|
const wxCharBuffer mb_str(wxMBConv& conv = wxConvLibc) const { return conv.cWC2MB(m_pchData); }
|
|
const wxChar* wc_str(wxMBConv& WXUNUSED(conv) = wxConvLibc) const { return m_pchData; }
|
|
#if wxMBFILES
|
|
const wxCharBuffer fn_str() const { return mb_str(wxConvFile); }
|
|
#else
|
|
const wxChar* fn_str() const { return m_pchData; }
|
|
#endif
|
|
#else
|
|
const wxChar* mb_str(wxMBConv& WXUNUSED(conv) = wxConvLibc ) const { return m_pchData; }
|
|
#if wxUSE_WCHAR_T
|
|
const wxWCharBuffer wc_str(wxMBConv& conv) const { return conv.cMB2WC(m_pchData); }
|
|
#endif
|
|
const wxChar* fn_str() const { return m_pchData; }
|
|
#endif
|
|
// for convenience
|
|
const wxWX2MBbuf mbc_str() const { return mb_str(*wxConvCurrent); }
|
|
|
|
// overloaded assignment
|
|
// from another wxString
|
|
wxString& operator=(const wxString& stringSrc);
|
|
// from a character
|
|
wxString& operator=(wxChar ch);
|
|
// from a C string
|
|
wxString& operator=(const wxChar *psz);
|
|
#if wxUSE_UNICODE
|
|
// from wxWCharBuffer
|
|
wxString& operator=(const wxWCharBuffer& psz) { return operator=((const wchar_t *)psz); }
|
|
#else
|
|
// from another kind of C string
|
|
wxString& operator=(const unsigned char* psz);
|
|
#if wxUSE_WCHAR_T
|
|
// from a wide string
|
|
wxString& operator=(const wchar_t *pwz);
|
|
#endif
|
|
// from wxCharBuffer
|
|
wxString& operator=(const wxCharBuffer& psz) { return operator=((const char *)psz); }
|
|
#endif
|
|
|
|
// string concatenation
|
|
// in place concatenation
|
|
/*
|
|
Concatenate and return the result. Note that the left to right
|
|
associativity of << allows to write things like "str << str1 << str2
|
|
<< ..." (unlike with +=)
|
|
*/
|
|
// string += string
|
|
wxString& operator<<(const wxString& s)
|
|
{
|
|
wxASSERT( s.GetStringData()->IsValid() );
|
|
|
|
ConcatSelf(s.Len(), s);
|
|
return *this;
|
|
}
|
|
// string += C string
|
|
wxString& operator<<(const wxChar *psz)
|
|
{ ConcatSelf(wxStrlen(psz), psz); return *this; }
|
|
// string += char
|
|
wxString& operator<<(wxChar ch) { ConcatSelf(1, &ch); return *this; }
|
|
|
|
// string += string
|
|
void operator+=(const wxString& s) { (void)operator<<(s); }
|
|
// string += C string
|
|
void operator+=(const wxChar *psz) { (void)operator<<(psz); }
|
|
// string += char
|
|
void operator+=(wxChar ch) { (void)operator<<(ch); }
|
|
|
|
// string += buffer (i.e. from wxGetString)
|
|
#if wxUSE_UNICODE
|
|
wxString& operator<<(const wxWCharBuffer& s) { (void)operator<<((const wchar_t *)s); return *this; }
|
|
void operator+=(const wxWCharBuffer& s) { (void)operator<<((const wchar_t *)s); }
|
|
#else
|
|
wxString& operator<<(const wxCharBuffer& s) { (void)operator<<((const char *)s); return *this; }
|
|
void operator+=(const wxCharBuffer& s) { (void)operator<<((const char *)s); }
|
|
#endif
|
|
|
|
// string += C string
|
|
wxString& Append(const wxChar* psz)
|
|
{ ConcatSelf(wxStrlen(psz), psz); return *this; }
|
|
// append count copies of given character
|
|
wxString& Append(wxChar ch, size_t count = 1u)
|
|
{ wxString str(ch, count); return *this << str; }
|
|
|
|
// prepend a string, return the string itself
|
|
wxString& Prepend(const wxString& str)
|
|
{ *this = str + *this; return *this; }
|
|
|
|
// non-destructive concatenation
|
|
//
|
|
friend wxString WXDLLEXPORT operator+(const wxString& string1, const wxString& string2);
|
|
//
|
|
friend wxString WXDLLEXPORT operator+(const wxString& string, wxChar ch);
|
|
//
|
|
friend wxString WXDLLEXPORT operator+(wxChar ch, const wxString& string);
|
|
//
|
|
friend wxString WXDLLEXPORT operator+(const wxString& string, const wxChar *psz);
|
|
//
|
|
friend wxString WXDLLEXPORT operator+(const wxChar *psz, const wxString& string);
|
|
|
|
// stream-like functions
|
|
// insert an int into string
|
|
wxString& operator<<(int i);
|
|
// insert a float into string
|
|
wxString& operator<<(float f);
|
|
// insert a double into string
|
|
wxString& operator<<(double d);
|
|
|
|
// string comparison
|
|
// case-sensitive comparison (returns a value < 0, = 0 or > 0)
|
|
int Cmp(const wxChar *psz) const { return wxStrcmp(c_str(), psz); }
|
|
// same as Cmp() but not case-sensitive
|
|
int CmpNoCase(const wxChar *psz) const { return wxStricmp(c_str(), psz); }
|
|
// test for the string equality, either considering case or not
|
|
// (if compareWithCase then the case matters)
|
|
bool IsSameAs(const wxChar *psz, bool compareWithCase = TRUE) const
|
|
{ return (compareWithCase ? Cmp(psz) : CmpNoCase(psz)) == 0; }
|
|
|
|
// simple sub-string extraction
|
|
// return substring starting at nFirst of length nCount (or till the end
|
|
// if nCount = default value)
|
|
wxString Mid(size_t nFirst, size_t nCount = wxSTRING_MAXLEN) const;
|
|
|
|
// operator version of Mid()
|
|
wxString operator()(size_t start, size_t len) const
|
|
{ return Mid(start, len); }
|
|
|
|
// get first nCount characters
|
|
wxString Left(size_t nCount) const;
|
|
// get last nCount characters
|
|
wxString Right(size_t nCount) const;
|
|
// get all characters before the first occurence of ch
|
|
// (returns the whole string if ch not found)
|
|
wxString BeforeFirst(wxChar ch) const;
|
|
// get all characters before the last occurence of ch
|
|
// (returns empty string if ch not found)
|
|
wxString BeforeLast(wxChar ch) const;
|
|
// get all characters after the first occurence of ch
|
|
// (returns empty string if ch not found)
|
|
wxString AfterFirst(wxChar ch) const;
|
|
// get all characters after the last occurence of ch
|
|
// (returns the whole string if ch not found)
|
|
wxString AfterLast(wxChar ch) const;
|
|
|
|
// for compatibility only, use more explicitly named functions above
|
|
wxString Before(wxChar ch) const { return BeforeLast(ch); }
|
|
wxString After(wxChar ch) const { return AfterFirst(ch); }
|
|
|
|
// case conversion
|
|
// convert to upper case in place, return the string itself
|
|
wxString& MakeUpper();
|
|
// convert to upper case, return the copy of the string
|
|
// Here's something to remember: BC++ doesn't like returns in inlines.
|
|
wxString Upper() const ;
|
|
// convert to lower case in place, return the string itself
|
|
wxString& MakeLower();
|
|
// convert to lower case, return the copy of the string
|
|
wxString Lower() const ;
|
|
|
|
// trimming/padding whitespace (either side) and truncating
|
|
// remove spaces from left or from right (default) side
|
|
wxString& Trim(bool bFromRight = TRUE);
|
|
// add nCount copies chPad in the beginning or at the end (default)
|
|
wxString& Pad(size_t nCount, wxChar chPad = _T(' '), bool bFromRight = TRUE);
|
|
// truncate string to given length
|
|
wxString& Truncate(size_t uiLen);
|
|
|
|
// searching and replacing
|
|
// searching (return starting index, or -1 if not found)
|
|
int Find(wxChar ch, bool bFromEnd = FALSE) const; // like strchr/strrchr
|
|
// searching (return starting index, or -1 if not found)
|
|
int Find(const wxChar *pszSub) const; // like strstr
|
|
// replace first (or all of bReplaceAll) occurences of substring with
|
|
// another string, returns the number of replacements made
|
|
size_t Replace(const wxChar *szOld,
|
|
const wxChar *szNew,
|
|
bool bReplaceAll = TRUE);
|
|
|
|
// check if the string contents matches a mask containing '*' and '?'
|
|
bool Matches(const wxChar *szMask) const;
|
|
|
|
// formated input/output
|
|
// as sprintf(), returns the number of characters written or < 0 on error
|
|
int Printf(const wxChar *pszFormat, ...);
|
|
// as vprintf(), returns the number of characters written or < 0 on error
|
|
int PrintfV(const wxChar* pszFormat, va_list argptr);
|
|
|
|
// raw access to string memory
|
|
// ensure that string has space for at least nLen characters
|
|
// only works if the data of this string is not shared
|
|
void Alloc(size_t nLen);
|
|
// minimize the string's memory
|
|
// only works if the data of this string is not shared
|
|
void Shrink();
|
|
// get writable buffer of at least nLen bytes. Unget() *must* be called
|
|
// a.s.a.p. to put string back in a reasonable state!
|
|
wxChar *GetWriteBuf(size_t nLen);
|
|
// call this immediately after GetWriteBuf() has been used
|
|
void UngetWriteBuf();
|
|
|
|
// wxWindows version 1 compatibility functions
|
|
|
|
// use Mid()
|
|
wxString SubString(size_t from, size_t to) const
|
|
{ return Mid(from, (to - from + 1)); }
|
|
// values for second parameter of CompareTo function
|
|
enum caseCompare {exact, ignoreCase};
|
|
// values for first parameter of Strip function
|
|
enum stripType {leading = 0x1, trailing = 0x2, both = 0x3};
|
|
|
|
// use Printf()
|
|
int sprintf(const wxChar *pszFormat, ...);
|
|
|
|
// use Cmp()
|
|
inline int CompareTo(const wxChar* psz, caseCompare cmp = exact) const
|
|
{ return cmp == exact ? Cmp(psz) : CmpNoCase(psz); }
|
|
|
|
// use Len
|
|
size_t Length() const { return Len(); }
|
|
// Count the number of characters
|
|
int Freq(wxChar ch) const;
|
|
// use MakeLower
|
|
void LowerCase() { MakeLower(); }
|
|
// use MakeUpper
|
|
void UpperCase() { MakeUpper(); }
|
|
// use Trim except that it doesn't change this string
|
|
wxString Strip(stripType w = trailing) const;
|
|
|
|
// use Find (more general variants not yet supported)
|
|
size_t Index(const wxChar* psz) const { return Find(psz); }
|
|
size_t Index(wxChar ch) const { return Find(ch); }
|
|
// use Truncate
|
|
wxString& Remove(size_t pos) { return Truncate(pos); }
|
|
wxString& RemoveLast() { return Truncate(Len() - 1); }
|
|
|
|
wxString& Remove(size_t nStart, size_t nLen) { return erase( nStart, nLen ); }
|
|
|
|
// use Find()
|
|
int First( const wxChar ch ) const { return Find(ch); }
|
|
int First( const wxChar* psz ) const { return Find(psz); }
|
|
int First( const wxString &str ) const { return Find(str); }
|
|
int Last( const wxChar ch ) const { return Find(ch, TRUE); }
|
|
bool Contains(const wxString& str) const { return Find(str) != -1; }
|
|
|
|
// use IsEmpty()
|
|
bool IsNull() const { return IsEmpty(); }
|
|
|
|
#ifdef wxSTD_STRING_COMPATIBILITY
|
|
// std::string compatibility functions
|
|
|
|
// an 'invalid' value for string index
|
|
static const size_t npos;
|
|
|
|
// constructors
|
|
// take nLen chars starting at nPos
|
|
wxString(const wxString& str, size_t nPos, size_t nLen)
|
|
{
|
|
wxASSERT( str.GetStringData()->IsValid() );
|
|
InitWith(str.c_str(), nPos, nLen == npos ? 0 : nLen);
|
|
}
|
|
// take all characters from pStart to pEnd
|
|
wxString(const void *pStart, const void *pEnd);
|
|
|
|
// lib.string.capacity
|
|
// return the length of the string
|
|
size_t size() const { return Len(); }
|
|
// return the length of the string
|
|
size_t length() const { return Len(); }
|
|
// return the maximum size of the string
|
|
size_t max_size() const { return wxSTRING_MAXLEN; }
|
|
// resize the string, filling the space with c if c != 0
|
|
void resize(size_t nSize, wxChar ch = _T('\0'));
|
|
// delete the contents of the string
|
|
void clear() { Empty(); }
|
|
// returns true if the string is empty
|
|
bool empty() const { return IsEmpty(); }
|
|
|
|
// lib.string.access
|
|
// return the character at position n
|
|
wxChar at(size_t n) const { return GetChar(n); }
|
|
// returns the writable character at position n
|
|
wxChar& at(size_t n) { return GetWritableChar(n); }
|
|
|
|
// lib.string.modifiers
|
|
// append a string
|
|
wxString& append(const wxString& str)
|
|
{ *this += str; return *this; }
|
|
// append elements str[pos], ..., str[pos+n]
|
|
wxString& append(const wxString& str, size_t pos, size_t n)
|
|
{ ConcatSelf(n, str.c_str() + pos); return *this; }
|
|
// append first n (or all if n == npos) characters of sz
|
|
wxString& append(const wxChar *sz, size_t n = npos)
|
|
{ ConcatSelf(n == npos ? wxStrlen(sz) : n, sz); return *this; }
|
|
|
|
// append n copies of ch
|
|
wxString& append(size_t n, wxChar ch) { return Pad(n, ch); }
|
|
|
|
// same as `this_string = str'
|
|
wxString& assign(const wxString& str) { return (*this) = str; }
|
|
// same as ` = str[pos..pos + n]
|
|
wxString& assign(const wxString& str, size_t pos, size_t n)
|
|
{ return *this = wxString((const wxChar *)str + pos, n); }
|
|
// same as `= first n (or all if n == npos) characters of sz'
|
|
wxString& assign(const wxChar *sz, size_t n = npos)
|
|
{ return *this = wxString(sz, n); }
|
|
// same as `= n copies of ch'
|
|
wxString& assign(size_t n, wxChar ch)
|
|
{ return *this = wxString(ch, n); }
|
|
|
|
// insert another string
|
|
wxString& insert(size_t nPos, const wxString& str);
|
|
// insert n chars of str starting at nStart (in str)
|
|
wxString& insert(size_t nPos, const wxString& str, size_t nStart, size_t n)
|
|
{ return insert(nPos, wxString((const wxChar *)str + nStart, n)); }
|
|
|
|
// insert first n (or all if n == npos) characters of sz
|
|
wxString& insert(size_t nPos, const wxChar *sz, size_t n = npos)
|
|
{ return insert(nPos, wxString(sz, n)); }
|
|
// insert n copies of ch
|
|
wxString& insert(size_t nPos, size_t n, wxChar ch)
|
|
{ return insert(nPos, wxString(ch, n)); }
|
|
|
|
// delete characters from nStart to nStart + nLen
|
|
wxString& erase(size_t nStart = 0, size_t nLen = npos);
|
|
|
|
// replaces the substring of length nLen starting at nStart
|
|
wxString& replace(size_t nStart, size_t nLen, const wxChar* sz);
|
|
// replaces the substring with nCount copies of ch
|
|
wxString& replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch);
|
|
// replaces a substring with another substring
|
|
wxString& replace(size_t nStart, size_t nLen,
|
|
const wxString& str, size_t nStart2, size_t nLen2);
|
|
// replaces the substring with first nCount chars of sz
|
|
wxString& replace(size_t nStart, size_t nLen,
|
|
const wxChar* sz, size_t nCount);
|
|
|
|
// swap two strings
|
|
void swap(wxString& str);
|
|
|
|
// All find() functions take the nStart argument which specifies the
|
|
// position to start the search on, the default value is 0. All functions
|
|
// return npos if there were no match.
|
|
|
|
// find a substring
|
|
size_t find(const wxString& str, size_t nStart = 0) const;
|
|
|
|
// VC++ 1.5 can't cope with this syntax.
|
|
#if !defined(__VISUALC__) || defined(__WIN32__)
|
|
// find first n characters of sz
|
|
size_t find(const wxChar* sz, size_t nStart = 0, size_t n = npos) const;
|
|
#endif
|
|
|
|
// Gives a duplicate symbol (presumably a case-insensitivity problem)
|
|
#if !defined(__BORLANDC__)
|
|
// find the first occurence of character ch after nStart
|
|
size_t find(wxChar ch, size_t nStart = 0) const;
|
|
#endif
|
|
// rfind() family is exactly like find() but works right to left
|
|
|
|
// as find, but from the end
|
|
size_t rfind(const wxString& str, size_t nStart = npos) const;
|
|
|
|
// VC++ 1.5 can't cope with this syntax.
|
|
#if !defined(__VISUALC__) || defined(__WIN32__)
|
|
// as find, but from the end
|
|
size_t rfind(const wxChar* sz, size_t nStart = npos,
|
|
size_t n = npos) const;
|
|
// as find, but from the end
|
|
size_t rfind(wxChar ch, size_t nStart = npos) const;
|
|
#endif
|
|
|
|
// find first/last occurence of any character in the set
|
|
|
|
//
|
|
size_t find_first_of(const wxString& str, size_t nStart = 0) const;
|
|
//
|
|
size_t find_first_of(const wxChar* sz, size_t nStart = 0) const;
|
|
// same as find(char, size_t)
|
|
size_t find_first_of(wxChar c, size_t nStart = 0) const;
|
|
//
|
|
size_t find_last_of (const wxString& str, size_t nStart = npos) const;
|
|
//
|
|
size_t find_last_of (const wxChar* s, size_t nStart = npos) const;
|
|
// same as rfind(char, size_t)
|
|
size_t find_last_of (wxChar c, size_t nStart = npos) const;
|
|
|
|
// find first/last occurence of any character not in the set
|
|
|
|
//
|
|
size_t find_first_not_of(const wxString& str, size_t nStart = 0) const;
|
|
//
|
|
size_t find_first_not_of(const wxChar* s, size_t nStart = 0) const;
|
|
//
|
|
size_t find_first_not_of(wxChar ch, size_t nStart = 0) const;
|
|
//
|
|
size_t find_last_not_of(const wxString& str, size_t nStart=npos) const;
|
|
//
|
|
size_t find_last_not_of(const wxChar* s, size_t nStart = npos) const;
|
|
//
|
|
size_t find_last_not_of(wxChar ch, size_t nStart = npos) const;
|
|
|
|
// All compare functions return -1, 0 or 1 if the [sub]string is less,
|
|
// equal or greater than the compare() argument.
|
|
|
|
// just like strcmp()
|
|
int compare(const wxString& str) const { return Cmp(str); }
|
|
// comparison with a substring
|
|
int compare(size_t nStart, size_t nLen, const wxString& str) const;
|
|
// comparison of 2 substrings
|
|
int compare(size_t nStart, size_t nLen,
|
|
const wxString& str, size_t nStart2, size_t nLen2) const;
|
|
// just like strcmp()
|
|
int compare(const wxChar* sz) const { return Cmp(sz); }
|
|
// substring comparison with first nCount characters of sz
|
|
int compare(size_t nStart, size_t nLen,
|
|
const wxChar* sz, size_t nCount = npos) const;
|
|
|
|
// substring extraction
|
|
wxString substr(size_t nStart = 0, size_t nLen = npos) const;
|
|
#endif // wxSTD_STRING_COMPATIBILITY
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// The string array uses it's knowledge of internal structure of the wxString
|
|
// class to optimize string storage. Normally, we would store pointers to
|
|
// string, but as wxString is, in fact, itself a pointer (sizeof(wxString) is
|
|
// sizeof(char *)) we store these pointers instead. The cast to "wxString *" is
|
|
// really all we need to turn such pointer into a string!
|
|
//
|
|
// Of course, it can be called a dirty hack, but we use twice less memory and
|
|
// this approach is also more speed efficient, so it's probably worth it.
|
|
//
|
|
// Usage notes: when a string is added/inserted, a new copy of it is created,
|
|
// so the original string may be safely deleted. When a string is retrieved
|
|
// from the array (operator[] or Item() method), a reference is returned.
|
|
// ----------------------------------------------------------------------------
|
|
class WXDLLEXPORT wxArrayString
|
|
{
|
|
public:
|
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// type of function used by wxArrayString::Sort()
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typedef int (*CompareFunction)(const wxString& first,
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const wxString& second);
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// constructors and destructor
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// default ctor
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wxArrayString();
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// copy ctor
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wxArrayString(const wxArrayString& array);
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// assignment operator
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wxArrayString& operator=(const wxArrayString& src);
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// not virtual, this class should not be derived from
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~wxArrayString();
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// memory management
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// empties the list, but doesn't release memory
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void Empty();
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// empties the list and releases memory
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void Clear();
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// preallocates memory for given number of items
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void Alloc(size_t nCount);
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// minimzes the memory usage (by freeing all extra memory)
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void Shrink();
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// simple accessors
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// number of elements in the array
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size_t GetCount() const { return m_nCount; }
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// is it empty?
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bool IsEmpty() const { return m_nCount == 0; }
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// number of elements in the array (GetCount is preferred API)
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size_t Count() const { return m_nCount; }
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// items access (range checking is done in debug version)
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// get item at position uiIndex
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wxString& Item(size_t nIndex) const
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{ wxASSERT( nIndex < m_nCount ); return *(wxString *)&(m_pItems[nIndex]); }
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// same as Item()
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wxString& operator[](size_t nIndex) const { return Item(nIndex); }
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// get last item
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wxString& Last() const { wxASSERT( !IsEmpty() ); return Item(Count() - 1); }
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// item management
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// Search the element in the array, starting from the beginning if
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// bFromEnd is FALSE or from end otherwise. If bCase, comparison is case
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// sensitive (default). Returns index of the first item matched or
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// wxNOT_FOUND
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int Index (const wxChar *sz, bool bCase = TRUE, bool bFromEnd = FALSE) const;
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// add new element at the end
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void Add(const wxString& str);
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// add new element at given position
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void Insert(const wxString& str, size_t uiIndex);
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// remove first item matching this value
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void Remove(const wxChar *sz);
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// remove item by index
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void Remove(size_t nIndex);
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// sorting
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// sort array elements in alphabetical order (or reversed alphabetical
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// order if reverseOrder parameter is TRUE)
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void Sort(bool reverseOrder = FALSE);
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// sort array elements using specified comparaison function
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void Sort(CompareFunction compareFunction);
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private:
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void Grow(); // makes array bigger if needed
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void Free(); // free the string stored
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void DoSort(); // common part of all Sort() variants
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size_t m_nSize, // current size of the array
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m_nCount; // current number of elements
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wxChar **m_pItems; // pointer to data
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};
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// ---------------------------------------------------------------------------
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// wxString comparison functions: operator versions are always case sensitive
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// ---------------------------------------------------------------------------
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//
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inline bool operator==(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) == 0); }
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//
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inline bool operator==(const wxString& s1, const wxChar * s2) { return (s1.Cmp(s2) == 0); }
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//
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inline bool operator==(const wxChar * s1, const wxString& s2) { return (s2.Cmp(s1) == 0); }
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//
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inline bool operator!=(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) != 0); }
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//
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inline bool operator!=(const wxString& s1, const wxChar * s2) { return (s1.Cmp(s2) != 0); }
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//
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inline bool operator!=(const wxChar * s1, const wxString& s2) { return (s2.Cmp(s1) != 0); }
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//
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inline bool operator< (const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) < 0); }
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//
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inline bool operator< (const wxString& s1, const wxChar * s2) { return (s1.Cmp(s2) < 0); }
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//
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inline bool operator< (const wxChar * s1, const wxString& s2) { return (s2.Cmp(s1) > 0); }
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//
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inline bool operator> (const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) > 0); }
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//
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inline bool operator> (const wxString& s1, const wxChar * s2) { return (s1.Cmp(s2) > 0); }
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//
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inline bool operator> (const wxChar * s1, const wxString& s2) { return (s2.Cmp(s1) < 0); }
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//
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inline bool operator<=(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) <= 0); }
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//
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inline bool operator<=(const wxString& s1, const wxChar * s2) { return (s1.Cmp(s2) <= 0); }
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//
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inline bool operator<=(const wxChar * s1, const wxString& s2) { return (s2.Cmp(s1) >= 0); }
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//
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inline bool operator>=(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) >= 0); }
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//
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inline bool operator>=(const wxString& s1, const wxChar * s2) { return (s1.Cmp(s2) >= 0); }
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//
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inline bool operator>=(const wxChar * s1, const wxString& s2) { return (s2.Cmp(s1) <= 0); }
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wxString WXDLLEXPORT operator+(const wxString& string1, const wxString& string2);
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wxString WXDLLEXPORT operator+(const wxString& string, wxChar ch);
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wxString WXDLLEXPORT operator+(wxChar ch, const wxString& string);
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wxString WXDLLEXPORT operator+(const wxString& string, const wxChar *psz);
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wxString WXDLLEXPORT operator+(const wxChar *psz, const wxString& string);
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#if wxUSE_UNICODE
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inline wxString WXDLLEXPORT operator+(const wxString& string, const wxWCharBuffer& buf)
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{ return string + (const wchar_t *)buf; }
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inline wxString WXDLLEXPORT operator+(const wxWCharBuffer& buf, const wxString& string)
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{ return (const wchar_t *)buf + string; }
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#else
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inline wxString WXDLLEXPORT operator+(const wxString& string, const wxCharBuffer& buf)
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{ return string + (const char *)buf; }
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inline wxString WXDLLEXPORT operator+(const wxCharBuffer& buf, const wxString& string)
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{ return (const char *)buf + string; }
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#endif
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// ---------------------------------------------------------------------------
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// Implementation only from here until the end of file
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// ---------------------------------------------------------------------------
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#ifdef wxSTD_STRING_COMPATIBILITY
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#include "wx/ioswrap.h"
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WXDLLEXPORT istream& operator>>(istream& is, wxString& str);
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#endif // wxSTD_STRING_COMPATIBILITY
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#endif // _WX_WXSTRINGH__
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