1 /////////////////////////////////////////////////////////////////////////////
3 // Purpose: wxString class
4 // Author: Vadim Zeitlin
8 // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // Licence: wxWindows license
10 /////////////////////////////////////////////////////////////////////////////
13 #pragma implementation "string.h"
18 * 1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
19 * 2) AllocBuffer() sets nRefs to 1, Lock() increments it by one
20 * 3) Unlock() decrements nRefs and frees memory if it goes to 0
23 // ===========================================================================
24 // headers, declarations, constants
25 // ===========================================================================
27 // For compilers that support precompilation, includes "wx.h".
28 #include "wx/wxprec.h"
36 #include "wx/string.h"
38 #include "wx/thread.h"
41 #include "wx/regex.h" // for wxString::Matches()
52 #include <wchar.h> // for wcsrtombs(), see comments where it's used
55 #ifdef WXSTRING_IS_WXOBJECT
56 IMPLEMENT_DYNAMIC_CLASS(wxString, wxObject)
57 #endif //WXSTRING_IS_WXOBJECT
60 #undef wxUSE_EXPERIMENTAL_PRINTF
61 #define wxUSE_EXPERIMENTAL_PRINTF 1
64 // allocating extra space for each string consumes more memory but speeds up
65 // the concatenation operations (nLen is the current string's length)
66 // NB: EXTRA_ALLOC must be >= 0!
67 #define EXTRA_ALLOC (19 - nLen % 16)
69 // ---------------------------------------------------------------------------
70 // static class variables definition
71 // ---------------------------------------------------------------------------
73 #ifdef wxSTD_STRING_COMPATIBILITY
74 const size_t wxString::npos = wxSTRING_MAXLEN;
75 #endif // wxSTD_STRING_COMPATIBILITY
77 // ----------------------------------------------------------------------------
79 // ----------------------------------------------------------------------------
81 // for an empty string, GetStringData() will return this address: this
82 // structure has the same layout as wxStringData and it's data() method will
83 // return the empty string (dummy pointer)
88 } g_strEmpty = { {-1, 0, 0}, wxT('\0') };
90 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
91 // must define this static for VA or else you get multiply defined symbols
93 const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
96 // empty C style string: points to 'string data' byte of g_strEmpty
97 extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
99 // ----------------------------------------------------------------------------
100 // conditional compilation
101 // ----------------------------------------------------------------------------
103 #if !defined(__WXSW__) && wxUSE_UNICODE
104 #ifdef wxUSE_EXPERIMENTAL_PRINTF
105 #undef wxUSE_EXPERIMENTAL_PRINTF
107 #define wxUSE_EXPERIMENTAL_PRINTF 1
110 // we want to find out if the current platform supports vsnprintf()-like
111 // function: for Unix this is done with configure, for Windows we test the
112 // compiler explicitly.
114 // FIXME currently, this is only for ANSI (!Unicode) strings, so we call this
115 // function wxVsnprintfA (A for ANSI), should also find one for Unicode
116 // strings in Unicode build
118 #if defined(__VISUALC__) || (defined(__MINGW32__) && wxUSE_NORLANDER_HEADERS)
119 #define wxVsnprintfA _vsnprintf
121 #elif defined(__WXMAC__)
122 #define wxVsnprintfA vsnprintf
124 #ifdef HAVE_VSNPRINTF
125 #define wxVsnprintfA vsnprintf
127 #endif // Windows/!Windows
130 // in this case we'll use vsprintf() (which is ANSI and thus should be
131 // always available), but it's unsafe because it doesn't check for buffer
132 // size - so give a warning
133 #define wxVsnprintfA(buf, len, format, arg) vsprintf(buf, format, arg)
135 #if defined(__VISUALC__)
136 #pragma message("Using sprintf() because no snprintf()-like function defined")
137 #elif defined(__GNUG__)
138 #warning "Using sprintf() because no snprintf()-like function defined"
140 #endif // no vsnprintf
143 // AIX has vsnprintf, but there's no prototype in the system headers.
144 extern "C" int vsnprintf(char* str, size_t n, const char* format, va_list ap);
147 // ----------------------------------------------------------------------------
149 // ----------------------------------------------------------------------------
151 #if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
153 // MS Visual C++ version 5.0 provides the new STL headers as well as the old
156 // ATTN: you can _not_ use both of these in the same program!
158 wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
163 streambuf *sb = is.rdbuf();
166 int ch = sb->sbumpc ();
168 is.setstate(ios::eofbit);
171 else if ( isspace(ch) ) {
183 if ( str.length() == 0 )
184 is.setstate(ios::failbit);
189 wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
195 #endif //std::string compatibility
197 extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
198 const wxChar *format, va_list argptr)
201 // FIXME should use wvsnprintf() or whatever if it's available
203 int iLen = s.PrintfV(format, argptr);
206 wxStrncpy(buf, s.c_str(), len);
207 buf[len-1] = wxT('\0');
212 // vsnprintf() will not terminate the string with '\0' if there is not
213 // enough place, but we want the string to always be NUL terminated
214 int rc = wxVsnprintfA(buf, len - 1, format, argptr);
221 #endif // Unicode/ANSI
224 extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
225 const wxChar *format, ...)
228 va_start(argptr, format);
230 int iLen = wxVsnprintf(buf, len, format, argptr);
237 // ----------------------------------------------------------------------------
239 // ----------------------------------------------------------------------------
241 // this small class is used to gather statistics for performance tuning
242 //#define WXSTRING_STATISTICS
243 #ifdef WXSTRING_STATISTICS
247 Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
249 { printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
251 void Add(size_t n) { m_nTotal += n; m_nCount++; }
254 size_t m_nCount, m_nTotal;
256 } g_averageLength("allocation size"),
257 g_averageSummandLength("summand length"),
258 g_averageConcatHit("hit probability in concat"),
259 g_averageInitialLength("initial string length");
261 #define STATISTICS_ADD(av, val) g_average##av.Add(val)
263 #define STATISTICS_ADD(av, val)
264 #endif // WXSTRING_STATISTICS
266 // ===========================================================================
267 // wxString class core
268 // ===========================================================================
270 // ---------------------------------------------------------------------------
272 // ---------------------------------------------------------------------------
274 // constructs string of <nLength> copies of character <ch>
275 wxString::wxString(wxChar ch, size_t nLength)
280 AllocBuffer(nLength);
283 // memset only works on char
284 for (size_t n=0; n<nLength; n++) m_pchData[n] = ch;
286 memset(m_pchData, ch, nLength);
291 // takes nLength elements of psz starting at nPos
292 void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
296 // if the length is not given, assume the string to be NUL terminated
297 if ( nLength == wxSTRING_MAXLEN ) {
298 wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
300 nLength = wxStrlen(psz + nPos);
303 STATISTICS_ADD(InitialLength, nLength);
306 // trailing '\0' is written in AllocBuffer()
307 AllocBuffer(nLength);
308 memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
312 #ifdef wxSTD_STRING_COMPATIBILITY
314 // poor man's iterators are "void *" pointers
315 wxString::wxString(const void *pStart, const void *pEnd)
317 InitWith((const wxChar *)pStart, 0,
318 (const wxChar *)pEnd - (const wxChar *)pStart);
321 #endif //std::string compatibility
325 // from multibyte string
326 wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
328 // first get necessary size
329 size_t nLen = psz ? conv.MB2WC((wchar_t *) NULL, psz, 0) : 0;
331 // nLength is number of *Unicode* characters here!
332 if ((nLen != (size_t)-1) && (nLen > nLength))
336 if ( (nLen != 0) && (nLen != (size_t)-1) ) {
338 conv.MB2WC(m_pchData, psz, nLen);
349 wxString::wxString(const wchar_t *pwz, wxMBConv& conv)
351 // first get necessary size
352 size_t nLen = pwz ? conv.WC2MB((char *) NULL, pwz, 0) : 0;
355 if ( (nLen != 0) && (nLen != (size_t)-1) ) {
357 conv.WC2MB(m_pchData, pwz, nLen);
363 #endif // wxUSE_WCHAR_T
365 #endif // Unicode/ANSI
367 // ---------------------------------------------------------------------------
369 // ---------------------------------------------------------------------------
371 // allocates memory needed to store a C string of length nLen
372 void wxString::AllocBuffer(size_t nLen)
374 // allocating 0 sized buffer doesn't make sense, all empty strings should
376 wxASSERT( nLen > 0 );
378 // make sure that we don't overflow
379 wxASSERT( nLen < (INT_MAX / sizeof(wxChar)) -
380 (sizeof(wxStringData) + EXTRA_ALLOC + 1) );
382 STATISTICS_ADD(Length, nLen);
385 // 1) one extra character for '\0' termination
386 // 2) sizeof(wxStringData) for housekeeping info
387 wxStringData* pData = (wxStringData*)
388 malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(wxChar));
390 pData->nDataLength = nLen;
391 pData->nAllocLength = nLen + EXTRA_ALLOC;
392 m_pchData = pData->data(); // data starts after wxStringData
393 m_pchData[nLen] = wxT('\0');
396 // must be called before changing this string
397 void wxString::CopyBeforeWrite()
399 wxStringData* pData = GetStringData();
401 if ( pData->IsShared() ) {
402 pData->Unlock(); // memory not freed because shared
403 size_t nLen = pData->nDataLength;
405 memcpy(m_pchData, pData->data(), nLen*sizeof(wxChar));
408 wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
411 // must be called before replacing contents of this string
412 void wxString::AllocBeforeWrite(size_t nLen)
414 wxASSERT( nLen != 0 ); // doesn't make any sense
416 // must not share string and must have enough space
417 wxStringData* pData = GetStringData();
418 if ( pData->IsShared() || pData->IsEmpty() ) {
419 // can't work with old buffer, get new one
424 if ( nLen > pData->nAllocLength ) {
425 // realloc the buffer instead of calling malloc() again, this is more
427 STATISTICS_ADD(Length, nLen);
431 wxStringData *pDataOld = pData;
432 pData = (wxStringData*)
433 realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
438 // FIXME we're going to crash...
442 pData->nAllocLength = nLen;
443 m_pchData = pData->data();
446 // now we have enough space, just update the string length
447 pData->nDataLength = nLen;
450 wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
453 // allocate enough memory for nLen characters
454 void wxString::Alloc(size_t nLen)
456 wxStringData *pData = GetStringData();
457 if ( pData->nAllocLength <= nLen ) {
458 if ( pData->IsEmpty() ) {
461 wxStringData* pData = (wxStringData*)
462 malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
464 pData->nDataLength = 0;
465 pData->nAllocLength = nLen;
466 m_pchData = pData->data(); // data starts after wxStringData
467 m_pchData[0u] = wxT('\0');
469 else if ( pData->IsShared() ) {
470 pData->Unlock(); // memory not freed because shared
471 size_t nOldLen = pData->nDataLength;
473 memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
478 wxStringData *pDataOld = pData;
479 wxStringData *p = (wxStringData *)
480 realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
486 // FIXME what to do on memory error?
490 // it's not important if the pointer changed or not (the check for this
491 // is not faster than assigning to m_pchData in all cases)
492 p->nAllocLength = nLen;
493 m_pchData = p->data();
496 //else: we've already got enough
499 // shrink to minimal size (releasing extra memory)
500 void wxString::Shrink()
502 wxStringData *pData = GetStringData();
504 // this variable is unused in release build, so avoid the compiler warning
505 // by just not declaring it
509 realloc(pData, sizeof(wxStringData) + (pData->nDataLength + 1)*sizeof(wxChar));
511 // we rely on a reasonable realloc() implementation here - so far I haven't
512 // seen any which wouldn't behave like this
514 wxASSERT( p != NULL ); // can't free memory?
515 wxASSERT( p == pData ); // we're decrementing the size - block shouldn't move!
518 // get the pointer to writable buffer of (at least) nLen bytes
519 wxChar *wxString::GetWriteBuf(size_t nLen)
521 AllocBeforeWrite(nLen);
523 wxASSERT( GetStringData()->nRefs == 1 );
524 GetStringData()->Validate(FALSE);
529 // put string back in a reasonable state after GetWriteBuf
530 void wxString::UngetWriteBuf()
532 GetStringData()->nDataLength = wxStrlen(m_pchData);
533 GetStringData()->Validate(TRUE);
536 void wxString::UngetWriteBuf(size_t nLen)
538 GetStringData()->nDataLength = nLen;
539 GetStringData()->Validate(TRUE);
542 // ---------------------------------------------------------------------------
544 // ---------------------------------------------------------------------------
546 // all functions are inline in string.h
548 // ---------------------------------------------------------------------------
549 // assignment operators
550 // ---------------------------------------------------------------------------
552 // helper function: does real copy
553 void wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
555 if ( nSrcLen == 0 ) {
559 AllocBeforeWrite(nSrcLen);
560 memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
561 GetStringData()->nDataLength = nSrcLen;
562 m_pchData[nSrcLen] = wxT('\0');
566 // assigns one string to another
567 wxString& wxString::operator=(const wxString& stringSrc)
569 wxASSERT( stringSrc.GetStringData()->IsValid() );
571 // don't copy string over itself
572 if ( m_pchData != stringSrc.m_pchData ) {
573 if ( stringSrc.GetStringData()->IsEmpty() ) {
578 GetStringData()->Unlock();
579 m_pchData = stringSrc.m_pchData;
580 GetStringData()->Lock();
587 // assigns a single character
588 wxString& wxString::operator=(wxChar ch)
595 wxString& wxString::operator=(const wxChar *psz)
597 AssignCopy(wxStrlen(psz), psz);
603 // same as 'signed char' variant
604 wxString& wxString::operator=(const unsigned char* psz)
606 *this = (const char *)psz;
611 wxString& wxString::operator=(const wchar_t *pwz)
621 // ---------------------------------------------------------------------------
622 // string concatenation
623 // ---------------------------------------------------------------------------
625 // add something to this string
626 void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
628 STATISTICS_ADD(SummandLength, nSrcLen);
630 // concatenating an empty string is a NOP
632 wxStringData *pData = GetStringData();
633 size_t nLen = pData->nDataLength;
634 size_t nNewLen = nLen + nSrcLen;
636 // alloc new buffer if current is too small
637 if ( pData->IsShared() ) {
638 STATISTICS_ADD(ConcatHit, 0);
640 // we have to allocate another buffer
641 wxStringData* pOldData = GetStringData();
642 AllocBuffer(nNewLen);
643 memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
646 else if ( nNewLen > pData->nAllocLength ) {
647 STATISTICS_ADD(ConcatHit, 0);
649 // we have to grow the buffer
653 STATISTICS_ADD(ConcatHit, 1);
655 // the buffer is already big enough
658 // should be enough space
659 wxASSERT( nNewLen <= GetStringData()->nAllocLength );
661 // fast concatenation - all is done in our buffer
662 memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
664 m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
665 GetStringData()->nDataLength = nNewLen; // and fix the length
667 //else: the string to append was empty
671 * concatenation functions come in 5 flavours:
673 * char + string and string + char
674 * C str + string and string + C str
677 wxString operator+(const wxString& string1, const wxString& string2)
679 wxASSERT( string1.GetStringData()->IsValid() );
680 wxASSERT( string2.GetStringData()->IsValid() );
682 wxString s = string1;
688 wxString operator+(const wxString& string, wxChar ch)
690 wxASSERT( string.GetStringData()->IsValid() );
698 wxString operator+(wxChar ch, const wxString& string)
700 wxASSERT( string.GetStringData()->IsValid() );
708 wxString operator+(const wxString& string, const wxChar *psz)
710 wxASSERT( string.GetStringData()->IsValid() );
713 s.Alloc(wxStrlen(psz) + string.Len());
720 wxString operator+(const wxChar *psz, const wxString& string)
722 wxASSERT( string.GetStringData()->IsValid() );
725 s.Alloc(wxStrlen(psz) + string.Len());
732 // ===========================================================================
733 // other common string functions
734 // ===========================================================================
736 // ---------------------------------------------------------------------------
737 // simple sub-string extraction
738 // ---------------------------------------------------------------------------
740 // helper function: clone the data attached to this string
741 void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
743 if ( nCopyLen == 0 ) {
747 dest.AllocBuffer(nCopyLen);
748 memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
752 // extract string of length nCount starting at nFirst
753 wxString wxString::Mid(size_t nFirst, size_t nCount) const
755 wxStringData *pData = GetStringData();
756 size_t nLen = pData->nDataLength;
758 // default value of nCount is wxSTRING_MAXLEN and means "till the end"
759 if ( nCount == wxSTRING_MAXLEN )
761 nCount = nLen - nFirst;
764 // out-of-bounds requests return sensible things
765 if ( nFirst + nCount > nLen )
767 nCount = nLen - nFirst;
772 // AllocCopy() will return empty string
777 AllocCopy(dest, nCount, nFirst);
782 // check that the tring starts with prefix and return the rest of the string
783 // in the provided pointer if it is not NULL, otherwise return FALSE
784 bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const
786 wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
788 // first check if the beginning of the string matches the prefix: note
789 // that we don't have to check that we don't run out of this string as
790 // when we reach the terminating NUL, either prefix string ends too (and
791 // then it's ok) or we break out of the loop because there is no match
792 const wxChar *p = c_str();
795 if ( *prefix++ != *p++ )
804 // put the rest of the string into provided pointer
811 // extract nCount last (rightmost) characters
812 wxString wxString::Right(size_t nCount) const
814 if ( nCount > (size_t)GetStringData()->nDataLength )
815 nCount = GetStringData()->nDataLength;
818 AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount);
822 // get all characters after the last occurence of ch
823 // (returns the whole string if ch not found)
824 wxString wxString::AfterLast(wxChar ch) const
827 int iPos = Find(ch, TRUE);
828 if ( iPos == wxNOT_FOUND )
831 str = c_str() + iPos + 1;
836 // extract nCount first (leftmost) characters
837 wxString wxString::Left(size_t nCount) const
839 if ( nCount > (size_t)GetStringData()->nDataLength )
840 nCount = GetStringData()->nDataLength;
843 AllocCopy(dest, nCount, 0);
847 // get all characters before the first occurence of ch
848 // (returns the whole string if ch not found)
849 wxString wxString::BeforeFirst(wxChar ch) const
852 for ( const wxChar *pc = m_pchData; *pc != wxT('\0') && *pc != ch; pc++ )
858 /// get all characters before the last occurence of ch
859 /// (returns empty string if ch not found)
860 wxString wxString::BeforeLast(wxChar ch) const
863 int iPos = Find(ch, TRUE);
864 if ( iPos != wxNOT_FOUND && iPos != 0 )
865 str = wxString(c_str(), iPos);
870 /// get all characters after the first occurence of ch
871 /// (returns empty string if ch not found)
872 wxString wxString::AfterFirst(wxChar ch) const
876 if ( iPos != wxNOT_FOUND )
877 str = c_str() + iPos + 1;
882 // replace first (or all) occurences of some substring with another one
883 size_t wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
885 size_t uiCount = 0; // count of replacements made
887 size_t uiOldLen = wxStrlen(szOld);
890 const wxChar *pCurrent = m_pchData;
891 const wxChar *pSubstr;
892 while ( *pCurrent != wxT('\0') ) {
893 pSubstr = wxStrstr(pCurrent, szOld);
894 if ( pSubstr == NULL ) {
895 // strTemp is unused if no replacements were made, so avoid the copy
899 strTemp += pCurrent; // copy the rest
900 break; // exit the loop
903 // take chars before match
904 strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
906 pCurrent = pSubstr + uiOldLen; // restart after match
911 if ( !bReplaceAll ) {
912 strTemp += pCurrent; // copy the rest
913 break; // exit the loop
918 // only done if there were replacements, otherwise would have returned above
924 bool wxString::IsAscii() const
926 const wxChar *s = (const wxChar*) *this;
928 if(!isascii(*s)) return(FALSE);
934 bool wxString::IsWord() const
936 const wxChar *s = (const wxChar*) *this;
938 if(!wxIsalpha(*s)) return(FALSE);
944 bool wxString::IsNumber() const
946 const wxChar *s = (const wxChar*) *this;
948 if ((s[0] == '-') || (s[0] == '+')) s++;
950 if(!wxIsdigit(*s)) return(FALSE);
956 wxString wxString::Strip(stripType w) const
959 if ( w & leading ) s.Trim(FALSE);
960 if ( w & trailing ) s.Trim(TRUE);
964 // ---------------------------------------------------------------------------
966 // ---------------------------------------------------------------------------
968 wxString& wxString::MakeUpper()
972 for ( wxChar *p = m_pchData; *p; p++ )
973 *p = (wxChar)wxToupper(*p);
978 wxString& wxString::MakeLower()
982 for ( wxChar *p = m_pchData; *p; p++ )
983 *p = (wxChar)wxTolower(*p);
988 // ---------------------------------------------------------------------------
989 // trimming and padding
990 // ---------------------------------------------------------------------------
992 // some compilers (VC++ 6.0 not to name them) return TRUE for a call to
993 // isspace('ê') in the C locale which seems to be broken to me, but we have to
994 // live with this by checking that the character is a 7 bit one - even if this
995 // may fail to detect some spaces (I don't know if Unicode doesn't have
996 // space-like symbols somewhere except in the first 128 chars), it is arguably
997 // still better than trimming away accented letters
998 inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
1000 // trims spaces (in the sense of isspace) from left or right side
1001 wxString& wxString::Trim(bool bFromRight)
1003 // first check if we're going to modify the string at all
1006 (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
1007 (!bFromRight && wxSafeIsspace(GetChar(0u)))
1011 // ok, there is at least one space to trim
1016 // find last non-space character
1017 wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
1018 while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )
1021 // truncate at trailing space start
1023 GetStringData()->nDataLength = psz - m_pchData;
1027 // find first non-space character
1028 const wxChar *psz = m_pchData;
1029 while ( wxSafeIsspace(*psz) )
1032 // fix up data and length
1033 int nDataLength = GetStringData()->nDataLength - (psz - (const wxChar*) m_pchData);
1034 memmove(m_pchData, psz, (nDataLength + 1)*sizeof(wxChar));
1035 GetStringData()->nDataLength = nDataLength;
1042 // adds nCount characters chPad to the string from either side
1043 wxString& wxString::Pad(size_t nCount, wxChar chPad, bool bFromRight)
1045 wxString s(chPad, nCount);
1058 // truncate the string
1059 wxString& wxString::Truncate(size_t uiLen)
1061 if ( uiLen < Len() ) {
1064 *(m_pchData + uiLen) = wxT('\0');
1065 GetStringData()->nDataLength = uiLen;
1067 //else: nothing to do, string is already short enough
1072 // ---------------------------------------------------------------------------
1073 // finding (return wxNOT_FOUND if not found and index otherwise)
1074 // ---------------------------------------------------------------------------
1077 int wxString::Find(wxChar ch, bool bFromEnd) const
1079 const wxChar *psz = bFromEnd ? wxStrrchr(m_pchData, ch) : wxStrchr(m_pchData, ch);
1081 return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
1084 // find a sub-string (like strstr)
1085 int wxString::Find(const wxChar *pszSub) const
1087 const wxChar *psz = wxStrstr(m_pchData, pszSub);
1089 return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
1092 // ----------------------------------------------------------------------------
1093 // conversion to numbers
1094 // ----------------------------------------------------------------------------
1096 bool wxString::ToLong(long *val) const
1098 wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
1100 const wxChar *start = c_str();
1102 *val = wxStrtol(start, &end, 10);
1104 // return TRUE only if scan was stopped by the terminating NUL and if the
1105 // string was not empty to start with
1106 return !*end && (end != start);
1109 bool wxString::ToULong(unsigned long *val) const
1111 wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
1113 const wxChar *start = c_str();
1115 *val = wxStrtoul(start, &end, 10);
1117 // return TRUE only if scan was stopped by the terminating NUL and if the
1118 // string was not empty to start with
1119 return !*end && (end != start);
1122 bool wxString::ToDouble(double *val) const
1124 wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToDouble") );
1126 const wxChar *start = c_str();
1128 *val = wxStrtod(start, &end);
1130 // return TRUE only if scan was stopped by the terminating NUL and if the
1131 // string was not empty to start with
1132 return !*end && (end != start);
1135 // ---------------------------------------------------------------------------
1137 // ---------------------------------------------------------------------------
1140 wxString wxString::Format(const wxChar *pszFormat, ...)
1143 va_start(argptr, pszFormat);
1146 s.PrintfV(pszFormat, argptr);
1154 wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
1157 s.PrintfV(pszFormat, argptr);
1161 int wxString::Printf(const wxChar *pszFormat, ...)
1164 va_start(argptr, pszFormat);
1166 int iLen = PrintfV(pszFormat, argptr);
1173 int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
1175 #if wxUSE_EXPERIMENTAL_PRINTF
1176 // the new implementation
1178 // buffer to avoid dynamic memory allocation each time for small strings
1179 char szScratch[1024];
1182 for (size_t n = 0; pszFormat[n]; n++)
1183 if (pszFormat[n] == wxT('%')) {
1184 static char s_szFlags[256] = "%";
1186 bool adj_left = FALSE, in_prec = FALSE,
1187 prec_dot = FALSE, done = FALSE;
1189 size_t min_width = 0, max_width = wxSTRING_MAXLEN;
1191 #define CHECK_PREC if (in_prec && !prec_dot) { s_szFlags[flagofs++] = '.'; prec_dot = TRUE; }
1192 switch (pszFormat[++n]) {
1206 s_szFlags[flagofs++] = pszFormat[n];
1211 s_szFlags[flagofs++] = pszFormat[n];
1218 // dot will be auto-added to s_szFlags if non-negative number follows
1223 s_szFlags[flagofs++] = pszFormat[n];
1228 s_szFlags[flagofs++] = pszFormat[n];
1234 s_szFlags[flagofs++] = pszFormat[n];
1239 s_szFlags[flagofs++] = pszFormat[n];
1243 int len = va_arg(argptr, int);
1250 adj_left = !adj_left;
1251 s_szFlags[flagofs++] = '-';
1256 flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
1259 case wxT('1'): case wxT('2'): case wxT('3'):
1260 case wxT('4'): case wxT('5'): case wxT('6'):
1261 case wxT('7'): case wxT('8'): case wxT('9'):
1265 while ((pszFormat[n]>=wxT('0')) && (pszFormat[n]<=wxT('9'))) {
1266 s_szFlags[flagofs++] = pszFormat[n];
1267 len = len*10 + (pszFormat[n] - wxT('0'));
1270 if (in_prec) max_width = len;
1271 else min_width = len;
1272 n--; // the main loop pre-increments n again
1282 s_szFlags[flagofs++] = pszFormat[n];
1283 s_szFlags[flagofs] = '\0';
1285 int val = va_arg(argptr, int);
1286 ::sprintf(szScratch, s_szFlags, val);
1288 else if (ilen == -1) {
1289 short int val = va_arg(argptr, short int);
1290 ::sprintf(szScratch, s_szFlags, val);
1292 else if (ilen == 1) {
1293 long int val = va_arg(argptr, long int);
1294 ::sprintf(szScratch, s_szFlags, val);
1296 else if (ilen == 2) {
1297 #if SIZEOF_LONG_LONG
1298 long long int val = va_arg(argptr, long long int);
1299 ::sprintf(szScratch, s_szFlags, val);
1301 long int val = va_arg(argptr, long int);
1302 ::sprintf(szScratch, s_szFlags, val);
1305 else if (ilen == 3) {
1306 size_t val = va_arg(argptr, size_t);
1307 ::sprintf(szScratch, s_szFlags, val);
1309 *this += wxString(szScratch);
1318 s_szFlags[flagofs++] = pszFormat[n];
1319 s_szFlags[flagofs] = '\0';
1321 long double val = va_arg(argptr, long double);
1322 ::sprintf(szScratch, s_szFlags, val);
1324 double val = va_arg(argptr, double);
1325 ::sprintf(szScratch, s_szFlags, val);
1327 *this += wxString(szScratch);
1332 void *val = va_arg(argptr, void *);
1334 s_szFlags[flagofs++] = pszFormat[n];
1335 s_szFlags[flagofs] = '\0';
1336 ::sprintf(szScratch, s_szFlags, val);
1337 *this += wxString(szScratch);
1343 wxChar val = va_arg(argptr, int);
1344 // we don't need to honor padding here, do we?
1351 // wx extension: we'll let %hs mean non-Unicode strings
1352 char *val = va_arg(argptr, char *);
1354 // ASCII->Unicode constructor handles max_width right
1355 wxString s(val, wxConvLibc, max_width);
1357 size_t len = wxSTRING_MAXLEN;
1359 for (len = 0; val[len] && (len<max_width); len++);
1360 } else val = wxT("(null)");
1361 wxString s(val, len);
1363 if (s.Len() < min_width)
1364 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
1367 wxChar *val = va_arg(argptr, wxChar *);
1368 size_t len = wxSTRING_MAXLEN;
1370 for (len = 0; val[len] && (len<max_width); len++);
1371 } else val = wxT("(null)");
1372 wxString s(val, len);
1373 if (s.Len() < min_width)
1374 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
1381 int *val = va_arg(argptr, int *);
1384 else if (ilen == -1) {
1385 short int *val = va_arg(argptr, short int *);
1388 else if (ilen >= 1) {
1389 long int *val = va_arg(argptr, long int *);
1395 if (wxIsalpha(pszFormat[n]))
1396 // probably some flag not taken care of here yet
1397 s_szFlags[flagofs++] = pszFormat[n];
1400 *this += wxT('%'); // just to pass the glibc tst-printf.c
1408 } else *this += pszFormat[n];
1411 // buffer to avoid dynamic memory allocation each time for small strings
1412 char szScratch[1024];
1414 // NB: wxVsnprintf() may return either less than the buffer size or -1 if
1415 // there is not enough place depending on implementation
1416 int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), (char *)pszFormat, argptr);
1418 // the whole string is in szScratch
1422 bool outOfMemory = FALSE;
1423 int size = 2*WXSIZEOF(szScratch);
1424 while ( !outOfMemory ) {
1425 char *buf = GetWriteBuf(size);
1427 iLen = wxVsnprintfA(buf, size, pszFormat, argptr);
1434 // ok, there was enough space
1438 // still not enough, double it again
1442 if ( outOfMemory ) {
1447 #endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
1452 // ----------------------------------------------------------------------------
1453 // misc other operations
1454 // ----------------------------------------------------------------------------
1456 // returns TRUE if the string matches the pattern which may contain '*' and
1457 // '?' metacharacters (as usual, '?' matches any character and '*' any number
1459 bool wxString::Matches(const wxChar *pszMask) const
1462 // first translate the shell-like mask into a regex
1464 pattern.reserve(wxStrlen(pszMask));
1476 pattern += _T(".*");
1487 // these characters are special in a RE, quote them
1488 // (however note that we don't quote '[' and ']' to allow
1489 // using them for Unix shell like matching)
1490 pattern += _T('\\');
1494 pattern += *pszMask;
1502 return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
1503 #else // !wxUSE_REGEX
1504 // TODO: this is, of course, awfully inefficient...
1506 // the char currently being checked
1507 const wxChar *pszTxt = c_str();
1509 // the last location where '*' matched
1510 const wxChar *pszLastStarInText = NULL;
1511 const wxChar *pszLastStarInMask = NULL;
1514 for ( ; *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
1515 switch ( *pszMask ) {
1517 if ( *pszTxt == wxT('\0') )
1520 // pszTxt and pszMask will be incremented in the loop statement
1526 // remember where we started to be able to backtrack later
1527 pszLastStarInText = pszTxt;
1528 pszLastStarInMask = pszMask;
1530 // ignore special chars immediately following this one
1531 // (should this be an error?)
1532 while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
1535 // if there is nothing more, match
1536 if ( *pszMask == wxT('\0') )
1539 // are there any other metacharacters in the mask?
1541 const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));
1543 if ( pEndMask != NULL ) {
1544 // we have to match the string between two metachars
1545 uiLenMask = pEndMask - pszMask;
1548 // we have to match the remainder of the string
1549 uiLenMask = wxStrlen(pszMask);
1552 wxString strToMatch(pszMask, uiLenMask);
1553 const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
1554 if ( pMatch == NULL )
1557 // -1 to compensate "++" in the loop
1558 pszTxt = pMatch + uiLenMask - 1;
1559 pszMask += uiLenMask - 1;
1564 if ( *pszMask != *pszTxt )
1570 // match only if nothing left
1571 if ( *pszTxt == wxT('\0') )
1574 // if we failed to match, backtrack if we can
1575 if ( pszLastStarInText ) {
1576 pszTxt = pszLastStarInText + 1;
1577 pszMask = pszLastStarInMask;
1579 pszLastStarInText = NULL;
1581 // don't bother resetting pszLastStarInMask, it's unnecessary
1587 #endif // wxUSE_REGEX/!wxUSE_REGEX
1590 // Count the number of chars
1591 int wxString::Freq(wxChar ch) const
1595 for (int i = 0; i < len; i++)
1597 if (GetChar(i) == ch)
1603 // convert to upper case, return the copy of the string
1604 wxString wxString::Upper() const
1605 { wxString s(*this); return s.MakeUpper(); }
1607 // convert to lower case, return the copy of the string
1608 wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }
1610 int wxString::sprintf(const wxChar *pszFormat, ...)
1613 va_start(argptr, pszFormat);
1614 int iLen = PrintfV(pszFormat, argptr);
1619 // ---------------------------------------------------------------------------
1620 // standard C++ library string functions
1621 // ---------------------------------------------------------------------------
1623 #ifdef wxSTD_STRING_COMPATIBILITY
1625 void wxString::resize(size_t nSize, wxChar ch)
1627 size_t len = length();
1633 else if ( nSize > len )
1635 *this += wxString(ch, len - nSize);
1637 //else: we have exactly the specified length, nothing to do
1640 void wxString::swap(wxString& str)
1642 // this is slightly less efficient than fiddling with m_pchData directly,
1643 // but it is still quite efficient as we don't copy the string here because
1644 // ref count always stays positive
1650 wxString& wxString::insert(size_t nPos, const wxString& str)
1652 wxASSERT( str.GetStringData()->IsValid() );
1653 wxASSERT( nPos <= Len() );
1655 if ( !str.IsEmpty() ) {
1657 wxChar *pc = strTmp.GetWriteBuf(Len() + str.Len());
1658 wxStrncpy(pc, c_str(), nPos);
1659 wxStrcpy(pc + nPos, str);
1660 wxStrcpy(pc + nPos + str.Len(), c_str() + nPos);
1661 strTmp.UngetWriteBuf();
1668 size_t wxString::find(const wxString& str, size_t nStart) const
1670 wxASSERT( str.GetStringData()->IsValid() );
1671 wxASSERT( nStart <= Len() );
1673 const wxChar *p = wxStrstr(c_str() + nStart, str);
1675 return p == NULL ? npos : p - c_str();
1678 // VC++ 1.5 can't cope with the default argument in the header.
1679 #if !defined(__VISUALC__) || defined(__WIN32__)
1680 size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
1682 return find(wxString(sz, n), nStart);
1686 // Gives a duplicate symbol (presumably a case-insensitivity problem)
1687 #if !defined(__BORLANDC__)
1688 size_t wxString::find(wxChar ch, size_t nStart) const
1690 wxASSERT( nStart <= Len() );
1692 const wxChar *p = wxStrchr(c_str() + nStart, ch);
1694 return p == NULL ? npos : p - c_str();
1698 size_t wxString::rfind(const wxString& str, size_t nStart) const
1700 wxASSERT( str.GetStringData()->IsValid() );
1701 wxASSERT( nStart <= Len() );
1703 // TODO could be made much quicker than that
1704 const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
1705 while ( p >= c_str() + str.Len() ) {
1706 if ( wxStrncmp(p - str.Len(), str, str.Len()) == 0 )
1707 return p - str.Len() - c_str();
1714 // VC++ 1.5 can't cope with the default argument in the header.
1715 #if !defined(__VISUALC__) || defined(__WIN32__)
1716 size_t wxString::rfind(const wxChar* sz, size_t nStart, size_t n) const
1718 return rfind(wxString(sz, n == npos ? 0 : n), nStart);
1721 size_t wxString::rfind(wxChar ch, size_t nStart) const
1723 if ( nStart == npos )
1729 wxASSERT( nStart <= Len() );
1732 const wxChar *p = wxStrrchr(c_str(), ch);
1737 size_t result = p - c_str();
1738 return ( result > nStart ) ? npos : result;
1742 size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
1744 const wxChar *start = c_str() + nStart;
1745 const wxChar *firstOf = wxStrpbrk(start, sz);
1747 return firstOf - c_str();
1752 size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
1754 if ( nStart == npos )
1760 wxASSERT( nStart <= Len() );
1763 for ( const wxChar *p = c_str() + length() - 1; p >= c_str(); p-- )
1765 if ( wxStrchr(sz, *p) )
1772 size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
1774 if ( nStart == npos )
1780 wxASSERT( nStart <= Len() );
1783 size_t nAccept = wxStrspn(c_str() + nStart, sz);
1784 if ( nAccept >= length() - nStart )
1790 size_t wxString::find_first_not_of(wxChar ch, size_t nStart) const
1792 wxASSERT( nStart <= Len() );
1794 for ( const wxChar *p = c_str() + nStart; *p; p++ )
1803 size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
1805 if ( nStart == npos )
1811 wxASSERT( nStart <= Len() );
1814 for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
1816 if ( !wxStrchr(sz, *p) )
1823 size_t wxString::find_last_not_of(wxChar ch, size_t nStart) const
1825 if ( nStart == npos )
1831 wxASSERT( nStart <= Len() );
1834 for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
1843 wxString& wxString::erase(size_t nStart, size_t nLen)
1845 wxString strTmp(c_str(), nStart);
1846 if ( nLen != npos ) {
1847 wxASSERT( nStart + nLen <= Len() );
1849 strTmp.append(c_str() + nStart + nLen);
1856 wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
1858 wxASSERT_MSG( nStart + nLen <= Len(),
1859 _T("index out of bounds in wxString::replace") );
1862 strTmp.Alloc(Len()); // micro optimisation to avoid multiple mem allocs
1865 strTmp.append(c_str(), nStart);
1866 strTmp << sz << c_str() + nStart + nLen;
1872 wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch)
1874 return replace(nStart, nLen, wxString(ch, nCount));
1877 wxString& wxString::replace(size_t nStart, size_t nLen,
1878 const wxString& str, size_t nStart2, size_t nLen2)
1880 return replace(nStart, nLen, str.substr(nStart2, nLen2));
1883 wxString& wxString::replace(size_t nStart, size_t nLen,
1884 const wxChar* sz, size_t nCount)
1886 return replace(nStart, nLen, wxString(sz, nCount));
1889 #endif //std::string compatibility
1891 // ============================================================================
1893 // ============================================================================
1895 // size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT)
1896 #define ARRAY_MAXSIZE_INCREMENT 4096
1897 #ifndef ARRAY_DEFAULT_INITIAL_SIZE // also defined in dynarray.h
1898 #define ARRAY_DEFAULT_INITIAL_SIZE (16)
1901 #define STRING(p) ((wxString *)(&(p)))
1904 wxArrayString::wxArrayString(bool autoSort)
1908 m_pItems = (wxChar **) NULL;
1909 m_autoSort = autoSort;
1913 wxArrayString::wxArrayString(const wxArrayString& src)
1917 m_pItems = (wxChar **) NULL;
1918 m_autoSort = src.m_autoSort;
1923 // assignment operator
1924 wxArrayString& wxArrayString::operator=(const wxArrayString& src)
1931 m_autoSort = src.m_autoSort;
1936 void wxArrayString::Copy(const wxArrayString& src)
1938 if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
1939 Alloc(src.m_nCount);
1941 for ( size_t n = 0; n < src.m_nCount; n++ )
1946 void wxArrayString::Grow()
1948 // only do it if no more place
1949 if ( m_nCount == m_nSize ) {
1950 // if ARRAY_DEFAULT_INITIAL_SIZE were set to 0, the initially empty would
1951 // be never resized!
1952 #if ARRAY_DEFAULT_INITIAL_SIZE == 0
1953 #error "ARRAY_DEFAULT_INITIAL_SIZE must be > 0!"
1956 if ( m_nSize == 0 ) {
1957 // was empty, alloc some memory
1958 m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
1959 m_pItems = new wxChar *[m_nSize];
1962 // otherwise when it's called for the first time, nIncrement would be 0
1963 // and the array would never be expanded
1964 // add 50% but not too much
1965 size_t nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
1966 ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
1967 if ( nIncrement > ARRAY_MAXSIZE_INCREMENT )
1968 nIncrement = ARRAY_MAXSIZE_INCREMENT;
1969 m_nSize += nIncrement;
1970 wxChar **pNew = new wxChar *[m_nSize];
1972 // copy data to new location
1973 memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
1975 // delete old memory (but do not release the strings!)
1976 wxDELETEA(m_pItems);
1983 void wxArrayString::Free()
1985 for ( size_t n = 0; n < m_nCount; n++ ) {
1986 STRING(m_pItems[n])->GetStringData()->Unlock();
1990 // deletes all the strings from the list
1991 void wxArrayString::Empty()
1998 // as Empty, but also frees memory
1999 void wxArrayString::Clear()
2006 wxDELETEA(m_pItems);
2010 wxArrayString::~wxArrayString()
2014 wxDELETEA(m_pItems);
2017 // pre-allocates memory (frees the previous data!)
2018 void wxArrayString::Alloc(size_t nSize)
2020 wxASSERT( nSize > 0 );
2022 // only if old buffer was not big enough
2023 if ( nSize > m_nSize ) {
2025 wxDELETEA(m_pItems);
2026 m_pItems = new wxChar *[nSize];
2033 // minimizes the memory usage by freeing unused memory
2034 void wxArrayString::Shrink()
2036 // only do it if we have some memory to free
2037 if( m_nCount < m_nSize ) {
2038 // allocates exactly as much memory as we need
2039 wxChar **pNew = new wxChar *[m_nCount];
2041 // copy data to new location
2042 memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
2048 // searches the array for an item (forward or backwards)
2049 int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
2052 // use binary search in the sorted array
2053 wxASSERT_MSG( bCase && !bFromEnd,
2054 wxT("search parameters ignored for auto sorted array") );
2063 res = wxStrcmp(sz, m_pItems[i]);
2075 // use linear search in unsorted array
2077 if ( m_nCount > 0 ) {
2078 size_t ui = m_nCount;
2080 if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
2087 for( size_t ui = 0; ui < m_nCount; ui++ ) {
2088 if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
2097 // add item at the end
2098 size_t wxArrayString::Add(const wxString& str)
2101 // insert the string at the correct position to keep the array sorted
2109 res = wxStrcmp(str, m_pItems[i]);
2120 wxASSERT_MSG( lo == hi, wxT("binary search broken") );
2127 wxASSERT( str.GetStringData()->IsValid() );
2131 // the string data must not be deleted!
2132 str.GetStringData()->Lock();
2135 m_pItems[m_nCount] = (wxChar *)str.c_str(); // const_cast
2141 // add item at the given position
2142 void wxArrayString::Insert(const wxString& str, size_t nIndex)
2144 wxASSERT( str.GetStringData()->IsValid() );
2146 wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Insert") );
2150 memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex],
2151 (m_nCount - nIndex)*sizeof(wxChar *));
2153 str.GetStringData()->Lock();
2154 m_pItems[nIndex] = (wxChar *)str.c_str();
2159 // removes item from array (by index)
2160 void wxArrayString::Remove(size_t nIndex)
2162 wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Remove") );
2165 Item(nIndex).GetStringData()->Unlock();
2167 memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1],
2168 (m_nCount - nIndex - 1)*sizeof(wxChar *));
2172 // removes item from array (by value)
2173 void wxArrayString::Remove(const wxChar *sz)
2175 int iIndex = Index(sz);
2177 wxCHECK_RET( iIndex != wxNOT_FOUND,
2178 wxT("removing inexistent element in wxArrayString::Remove") );
2183 // ----------------------------------------------------------------------------
2185 // ----------------------------------------------------------------------------
2187 // we can only sort one array at a time with the quick-sort based
2190 // need a critical section to protect access to gs_compareFunction and
2191 // gs_sortAscending variables
2192 static wxCriticalSection *gs_critsectStringSort = NULL;
2194 // call this before the value of the global sort vars is changed/after
2195 // you're finished with them
2196 #define START_SORT() wxASSERT( !gs_critsectStringSort ); \
2197 gs_critsectStringSort = new wxCriticalSection; \
2198 gs_critsectStringSort->Enter()
2199 #define END_SORT() gs_critsectStringSort->Leave(); \
2200 delete gs_critsectStringSort; \
2201 gs_critsectStringSort = NULL
2203 #define START_SORT()
2205 #endif // wxUSE_THREADS
2207 // function to use for string comparaison
2208 static wxArrayString::CompareFunction gs_compareFunction = NULL;
2210 // if we don't use the compare function, this flag tells us if we sort the
2211 // array in ascending or descending order
2212 static bool gs_sortAscending = TRUE;
2214 // function which is called by quick sort
2215 static int LINKAGEMODE wxStringCompareFunction(const void *first, const void *second)
2217 wxString *strFirst = (wxString *)first;
2218 wxString *strSecond = (wxString *)second;
2220 if ( gs_compareFunction ) {
2221 return gs_compareFunction(*strFirst, *strSecond);
2224 // maybe we should use wxStrcoll
2225 int result = wxStrcmp(strFirst->c_str(), strSecond->c_str());
2227 return gs_sortAscending ? result : -result;
2231 // sort array elements using passed comparaison function
2232 void wxArrayString::Sort(CompareFunction compareFunction)
2236 wxASSERT( !gs_compareFunction ); // must have been reset to NULL
2237 gs_compareFunction = compareFunction;
2241 // reset it to NULL so that Sort(bool) will work the next time
2242 gs_compareFunction = NULL;
2247 void wxArrayString::Sort(bool reverseOrder)
2251 wxASSERT( !gs_compareFunction ); // must have been reset to NULL
2252 gs_sortAscending = !reverseOrder;
2259 void wxArrayString::DoSort()
2261 wxCHECK_RET( !m_autoSort, wxT("can't use this method with sorted arrays") );
2263 // just sort the pointers using qsort() - of course it only works because
2264 // wxString() *is* a pointer to its data
2265 qsort(m_pItems, m_nCount, sizeof(wxChar *), wxStringCompareFunction);
2268 bool wxArrayString::operator==(const wxArrayString& a) const
2270 if ( m_nCount != a.m_nCount )
2273 for ( size_t n = 0; n < m_nCount; n++ )
2275 if ( Item(n) != a[n] )