// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
-#pragma implementation "string.h"
+ #pragma implementation "string.h"
#endif
/*
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/defs.h"
-#include "wx/string.h"
+ #include "wx/defs.h"
+ #include "wx/string.h"
+ #include "wx/intl.h"
+ #include "wx/thread.h"
#endif
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
-#ifdef WXSTRING_IS_WXOBJECT
- IMPLEMENT_DYNAMIC_CLASS(wxString, wxObject)
-#endif //WXSTRING_IS_WXOBJECT
+#ifdef __SALFORDC__
+ #include <clib.h>
+#endif
// allocating extra space for each string consumes more memory but speeds up
// the concatenation operations (nLen is the current string's length)
-#define EXTRA_ALLOC 16
+// NB: EXTRA_ALLOC must be >= 0!
+#define EXTRA_ALLOC (19 - nLen % 16)
// ---------------------------------------------------------------------------
// static class variables definition
// ---------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
- const size_t wxString::npos = STRING_MAXLEN;
-#endif
+#if defined(__VISAGECPP__) && __IBMCPP__ >= 400
+// must define this static for VA or else you get multiply defined symbols
+// everywhere
+const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
+#endif // Visual Age
+
+#ifdef wxSTD_STRING_COMPATIBILITY
+ const size_t wxString::npos = wxSTRING_MAXLEN;
+#endif // wxSTD_STRING_COMPATIBILITY
// ----------------------------------------------------------------------------
// static data
// ----------------------------------------------------------------------------
-// for an empty string, GetStringData() will return this address
-static int g_strEmpty[] = { -1, // ref count (locked)
- 0, // current length
- 0, // allocated memory
- 0 }; // string data
+// for an empty string, GetStringData() will return this address: this
+// structure has the same layout as wxStringData and it's data() method will
+// return the empty string (dummy pointer)
+static const struct
+{
+ wxStringData data;
+ wxChar dummy;
+} g_strEmpty = { {-1, 0, 0}, wxT('\0') };
+
// empty C style string: points to 'string data' byte of g_strEmpty
-extern const char *g_szNul = (const char *)(&g_strEmpty[3]);
+extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
+#if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
// MS Visual C++ version 5.0 provides the new STL headers as well as the old
// iostream ones.
//
// ATTN: you can _not_ use both of these in the same program!
-#if 0 // def _MSC_VER
- #include <iostream>
- #define NAMESPACE std::
-#else
- #include <iostream.h>
- #define NAMESPACE
-#endif //Visual C++
-NAMESPACE istream& operator>>(NAMESPACE istream& is, wxString& WXUNUSED(str))
+wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
{
#if 0
int w = is.width(0);
if ( is.ipfx(0) ) {
- NAMESPACE streambuf *sb = is.rdbuf();
+ streambuf *sb = is.rdbuf();
str.erase();
while ( true ) {
int ch = sb->sbumpc ();
if ( ch == EOF ) {
- is.setstate(NAMESPACE ios::eofbit);
+ is.setstate(ios::eofbit);
break;
}
else if ( isspace(ch) ) {
is.isfx();
if ( str.length() == 0 )
- is.setstate(NAMESPACE ios::failbit);
+ is.setstate(ios::failbit);
#endif
return is;
}
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
+{
+ os << str.c_str();
+ return os;
+}
+
#endif //std::string compatibility
// ----------------------------------------------------------------------------
class Averager
{
public:
- Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
- ~Averager()
- { printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
+ Averager(const wxChar *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
+ ~Averager()
+ { wxPrintf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
- void Add(uint n) { m_nTotal += n; m_nCount++; }
+ void Add(size_t n) { m_nTotal += n; m_nCount++; }
private:
- uint m_nCount, m_nTotal;
- const char *m_sz;
+ size_t m_nCount, m_nTotal;
+ const wxChar *m_sz;
} g_averageLength("allocation size"),
g_averageSummandLength("summand length"),
g_averageConcatHit("hit probability in concat"),
// ---------------------------------------------------------------------------
// constructs string of <nLength> copies of character <ch>
-wxString::wxString(char ch, size_t nLength)
+wxString::wxString(wxChar ch, size_t nLength)
{
Init();
if ( nLength > 0 ) {
- AllocBuffer(nLength);
-
- wxASSERT( sizeof(char) == 1 ); // can't use memset if not
+ if ( !AllocBuffer(nLength) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
+#if wxUSE_UNICODE
+ // memset only works on chars
+ for ( size_t n = 0; n < nLength; n++ )
+ m_pchData[n] = ch;
+#else
memset(m_pchData, ch, nLength);
+#endif
}
}
// takes nLength elements of psz starting at nPos
-void wxString::InitWith(const char *psz, size_t nPos, size_t nLength)
+void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
{
Init();
- wxASSERT( nPos <= Strlen(psz) );
+ // if the length is not given, assume the string to be NUL terminated
+ if ( nLength == wxSTRING_MAXLEN ) {
+ wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
- if ( nLength == STRING_MAXLEN )
- nLength = Strlen(psz + nPos);
+ nLength = wxStrlen(psz + nPos);
+ }
STATISTICS_ADD(InitialLength, nLength);
if ( nLength > 0 ) {
// trailing '\0' is written in AllocBuffer()
- AllocBuffer(nLength);
- memcpy(m_pchData, psz + nPos, nLength*sizeof(char));
+ if ( !AllocBuffer(nLength) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::InitWith") );
+ return;
+ }
+ memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
}
}
-// the same as previous constructor, but for compilers using unsigned char
-wxString::wxString(const unsigned char* psz, size_t nLength)
-{
- InitWith((const char *)psz, 0, nLength);
-}
-
-#ifdef STD_STRING_COMPATIBILITY
+#ifdef wxSTD_STRING_COMPATIBILITY
// poor man's iterators are "void *" pointers
wxString::wxString(const void *pStart, const void *pEnd)
{
- InitWith((const char *)pStart, 0,
- (const char *)pEnd - (const char *)pStart);
+ InitWith((const wxChar *)pStart, 0,
+ (const wxChar *)pEnd - (const wxChar *)pStart);
}
#endif //std::string compatibility
-// from wide string
-wxString::wxString(const wchar_t *pwz)
+#if wxUSE_UNICODE
+
+// from multibyte string
+wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
{
- // first get necessary size
- size_t nLen = wcstombs(NULL, pwz, 0);
+ // first get the size of the buffer we need
+ size_t nLen;
+ if ( psz )
+ {
+ // calculate the needed size ourselves or use a provide one
+ nLen = nLength == wxSTRING_MAXLEN ? conv.MB2WC(NULL, psz, 0) : nLength;
+ }
+ else
+ {
+ // nothing to convert
+ nLen = 0;
+ }
+
+ // anything to do?
+ if ( (nLen != 0) && (nLen != (size_t)-1) )
+ {
+ if ( !AllocBuffer(nLen) )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
+
+ // MB2WC wants the buffer size, not the string length
+ if ( conv.MB2WC(m_pchData, psz, nLen + 1) != (size_t)-1 )
+ {
+ // initialized ok
+ return;
+ }
+ //else: the conversion failed -- leave the string empty (what else?)
+ }
- // empty?
- if ( nLen != 0 ) {
- AllocBuffer(nLen);
- wcstombs(m_pchData, pwz, nLen);
- }
- else {
Init();
- }
}
+#else // ANSI
+
+#if wxUSE_WCHAR_T
+// from wide string
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
+{
+ // first get the size of the buffer we need
+ size_t nLen;
+ if ( pwz )
+ {
+ // calculate the needed size ourselves or use a provide one
+ nLen = nLength == wxSTRING_MAXLEN ? conv.WC2MB(NULL, pwz, 0) : nLength;
+ }
+ else
+ {
+ // nothing to convert
+ nLen = 0;
+ }
+
+ // anything to do?
+ if ( (nLen != 0) && (nLen != (size_t)-1) )
+ {
+ if ( !AllocBuffer(nLen) )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
+
+ // WC2MB wants the buffer size, not the string length
+ if ( conv.WC2MB(m_pchData, pwz, nLen + 1) != (size_t)-1 )
+ {
+ // initialized ok
+ return;
+ }
+ //else: the conversion failed -- leave the string empty (what else?)
+ }
+
+ Init();
+}
+#endif // wxUSE_WCHAR_T
+
+#endif // Unicode/ANSI
+
// ---------------------------------------------------------------------------
// memory allocation
// ---------------------------------------------------------------------------
// allocates memory needed to store a C string of length nLen
-void wxString::AllocBuffer(size_t nLen)
+bool wxString::AllocBuffer(size_t nLen)
{
- wxASSERT( nLen > 0 ); //
- wxASSERT( nLen <= INT_MAX-1 ); // max size (enough room for 1 extra)
+ // allocating 0 sized buffer doesn't make sense, all empty strings should
+ // reuse g_strEmpty
+ wxASSERT( nLen > 0 );
+
+ // make sure that we don't overflow
+ wxASSERT( nLen < (INT_MAX / sizeof(wxChar)) -
+ (sizeof(wxStringData) + EXTRA_ALLOC + 1) );
STATISTICS_ADD(Length, nLen);
// 1) one extra character for '\0' termination
// 2) sizeof(wxStringData) for housekeeping info
wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(char));
+ malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(wxChar));
+
+ if ( pData == NULL ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
+
pData->nRefs = 1;
pData->nDataLength = nLen;
pData->nAllocLength = nLen + EXTRA_ALLOC;
m_pchData = pData->data(); // data starts after wxStringData
- m_pchData[nLen] = '\0';
+ m_pchData[nLen] = wxT('\0');
+ return TRUE;
}
// must be called before changing this string
-void wxString::CopyBeforeWrite()
+bool wxString::CopyBeforeWrite()
{
wxStringData* pData = GetStringData();
if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
- uint nLen = pData->nDataLength;
- AllocBuffer(nLen);
- memcpy(m_pchData, pData->data(), nLen*sizeof(char));
+ size_t nLen = pData->nDataLength;
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
+ memcpy(m_pchData, pData->data(), nLen*sizeof(wxChar));
}
wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+
+ return TRUE;
}
// must be called before replacing contents of this string
-void wxString::AllocBeforeWrite(size_t nLen)
+bool wxString::AllocBeforeWrite(size_t nLen)
{
wxASSERT( nLen != 0 ); // doesn't make any sense
// must not share string and must have enough space
wxStringData* pData = GetStringData();
- if ( pData->IsShared() || (nLen > pData->nAllocLength) ) {
+ if ( pData->IsShared() || pData->IsEmpty() ) {
// can't work with old buffer, get new one
pData->Unlock();
- AllocBuffer(nLen);
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
+ }
+ else {
+ if ( nLen > pData->nAllocLength ) {
+ // realloc the buffer instead of calling malloc() again, this is more
+ // efficient
+ STATISTICS_ADD(Length, nLen);
+
+ nLen += EXTRA_ALLOC;
+
+ pData = (wxStringData*)
+ realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+ if ( pData == NULL ) {
+ // allocation failures are handled by the caller
+ // keep previous data since reallocation failed
+ return FALSE;
+ }
+
+ pData->nAllocLength = nLen;
+ m_pchData = pData->data();
+ }
+
+ // now we have enough space, just update the string length
+ pData->nDataLength = nLen;
}
wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+
+ return TRUE;
}
// allocate enough memory for nLen characters
-void wxString::Alloc(uint nLen)
+bool wxString::Alloc(size_t nLen)
{
wxStringData *pData = GetStringData();
if ( pData->nAllocLength <= nLen ) {
nLen += EXTRA_ALLOC;
wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(char));
+ malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+ if ( pData == NULL ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+
pData->nRefs = 1;
pData->nDataLength = 0;
pData->nAllocLength = nLen;
m_pchData = pData->data(); // data starts after wxStringData
- m_pchData[0u] = '\0';
+ m_pchData[0u] = wxT('\0');
}
else if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
- uint nOldLen = pData->nDataLength;
- AllocBuffer(nLen);
- memcpy(m_pchData, pData->data(), nOldLen*sizeof(char));
+ size_t nOldLen = pData->nDataLength;
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+ memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
}
else {
nLen += EXTRA_ALLOC;
- wxStringData *p = (wxStringData *)
- realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(char));
+ pData = (wxStringData *)
+ realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
- if ( p == NULL ) {
- // @@@ what to do on memory error?
- return;
+ if ( pData == NULL ) {
+ // allocation failure handled by caller
+ // keep previous data since reallocation failed
+ return FALSE;
}
// it's not important if the pointer changed or not (the check for this
// is not faster than assigning to m_pchData in all cases)
- p->nAllocLength = nLen;
- m_pchData = p->data();
+ pData->nAllocLength = nLen;
+ m_pchData = pData->data();
}
}
//else: we've already got enough
+ return TRUE;
}
// shrink to minimal size (releasing extra memory)
-void wxString::Shrink()
+bool wxString::Shrink()
{
wxStringData *pData = GetStringData();
- // this variable is unused in release build, so avoid the compiler warning by
- // just not declaring it
-#ifdef __WXDEBUG__
- void *p =
-#endif
- realloc(pData, sizeof(wxStringData) + (pData->nDataLength + 1)*sizeof(char));
+ size_t nLen = pData->nDataLength;
+ void *p = realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+ if ( p == NULL) {
+ wxFAIL_MSG( _T("out of memory reallocating wxString data") );
+ // keep previous data since reallocation failed
+ return FALSE;
+ }
- wxASSERT( p != NULL ); // can't free memory?
- wxASSERT( p == pData ); // we're decrementing the size - block shouldn't move!
+ if ( p != pData )
+ {
+ // contrary to what one might believe, some realloc() implementation do
+ // move the memory block even when its size is reduced
+ pData = (wxStringData *)p;
+
+ m_pchData = pData->data();
+ }
+
+ pData->nAllocLength = nLen;
+
+ return TRUE;
}
// get the pointer to writable buffer of (at least) nLen bytes
-char *wxString::GetWriteBuf(uint nLen)
+wxChar *wxString::GetWriteBuf(size_t nLen)
{
- AllocBeforeWrite(nLen);
+ if ( !AllocBeforeWrite(nLen) ) {
+ // allocation failure handled by caller
+ return NULL;
+ }
wxASSERT( GetStringData()->nRefs == 1 );
GetStringData()->Validate(FALSE);
// put string back in a reasonable state after GetWriteBuf
void wxString::UngetWriteBuf()
{
- GetStringData()->nDataLength = strlen(m_pchData);
+ GetStringData()->nDataLength = wxStrlen(m_pchData);
+ GetStringData()->Validate(TRUE);
+}
+
+void wxString::UngetWriteBuf(size_t nLen)
+{
+ GetStringData()->nDataLength = nLen;
GetStringData()->Validate(TRUE);
}
// ---------------------------------------------------------------------------
// helper function: does real copy
-void wxString::AssignCopy(size_t nSrcLen, const char *pszSrcData)
+bool wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
{
if ( nSrcLen == 0 ) {
Reinit();
}
else {
- AllocBeforeWrite(nSrcLen);
- memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(char));
+ if ( !AllocBeforeWrite(nSrcLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+ memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
GetStringData()->nDataLength = nSrcLen;
- m_pchData[nSrcLen] = '\0';
+ m_pchData[nSrcLen] = wxT('\0');
}
+ return TRUE;
}
// assigns one string to another
}
// assigns a single character
-wxString& wxString::operator=(char ch)
+wxString& wxString::operator=(wxChar ch)
{
- AssignCopy(1, &ch);
+ if ( !AssignCopy(1, &ch) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator=(wxChar)") );
+ }
return *this;
}
+
// assigns C string
-wxString& wxString::operator=(const char *psz)
+wxString& wxString::operator=(const wxChar *psz)
{
- AssignCopy(Strlen(psz), psz);
+ if ( !AssignCopy(wxStrlen(psz), psz) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator=(const wxChar *)") );
+ }
return *this;
}
+#if !wxUSE_UNICODE
+
// same as 'signed char' variant
wxString& wxString::operator=(const unsigned char* psz)
{
return *this;
}
+#if wxUSE_WCHAR_T
wxString& wxString::operator=(const wchar_t *pwz)
{
wxString str(pwz);
*this = str;
return *this;
}
+#endif
+
+#endif
// ---------------------------------------------------------------------------
// string concatenation
// ---------------------------------------------------------------------------
// add something to this string
-void wxString::ConcatSelf(int nSrcLen, const char *pszSrcData)
+bool wxString::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData)
{
STATISTICS_ADD(SummandLength, nSrcLen);
- // concatenating an empty string is a NOP, but it happens quite rarely,
- // so we don't waste our time checking for it
- // if ( nSrcLen > 0 )
- wxStringData *pData = GetStringData();
- uint nLen = pData->nDataLength;
- uint nNewLen = nLen + nSrcLen;
+ // concatenating an empty string is a NOP
+ if ( nSrcLen > 0 ) {
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+ size_t nNewLen = nLen + nSrcLen;
- // alloc new buffer if current is too small
- if ( pData->IsShared() ) {
- STATISTICS_ADD(ConcatHit, 0);
+ // alloc new buffer if current is too small
+ if ( pData->IsShared() ) {
+ STATISTICS_ADD(ConcatHit, 0);
- // we have to allocate another buffer
- wxStringData* pOldData = GetStringData();
- AllocBuffer(nNewLen);
- memcpy(m_pchData, pOldData->data(), nLen*sizeof(char));
- pOldData->Unlock();
- }
- else if ( nNewLen > pData->nAllocLength ) {
- STATISTICS_ADD(ConcatHit, 0);
+ // we have to allocate another buffer
+ wxStringData* pOldData = GetStringData();
+ if ( !AllocBuffer(nNewLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+ memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
+ pOldData->Unlock();
+ }
+ else if ( nNewLen > pData->nAllocLength ) {
+ STATISTICS_ADD(ConcatHit, 0);
- // we have to grow the buffer
- Alloc(nNewLen);
- }
- else {
- STATISTICS_ADD(ConcatHit, 1);
+ // we have to grow the buffer
+ if ( !Alloc(nNewLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+ }
+ else {
+ STATISTICS_ADD(ConcatHit, 1);
- // the buffer is already big enough
- }
+ // the buffer is already big enough
+ }
- // should be enough space
- wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+ // should be enough space
+ wxASSERT( nNewLen <= GetStringData()->nAllocLength );
- // fast concatenation - all is done in our buffer
- memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(char));
+ // fast concatenation - all is done in our buffer
+ memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
- m_pchData[nNewLen] = '\0'; // put terminating '\0'
- GetStringData()->nDataLength = nNewLen; // and fix the length
+ m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
+ GetStringData()->nDataLength = nNewLen; // and fix the length
+ }
+ //else: the string to append was empty
+ return TRUE;
}
/*
* C str + string and string + C str
*/
-wxString operator+(const wxString& string1, const wxString& string2)
+wxString operator+(const wxString& str1, const wxString& str2)
{
- wxASSERT( string1.GetStringData()->IsValid() );
- wxASSERT( string2.GetStringData()->IsValid() );
+ wxASSERT( str1.GetStringData()->IsValid() );
+ wxASSERT( str2.GetStringData()->IsValid() );
- wxString s = string1;
- s += string2;
+ wxString s = str1;
+ s += str2;
return s;
}
-wxString operator+(const wxString& string, char ch)
+wxString operator+(const wxString& str, wxChar ch)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
- wxString s = string;
+ wxString s = str;
s += ch;
return s;
}
-wxString operator+(char ch, const wxString& string)
+wxString operator+(wxChar ch, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
wxString s = ch;
- s += string;
+ s += str;
return s;
}
-wxString operator+(const wxString& string, const char *psz)
+wxString operator+(const wxString& str, const wxChar *psz)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
wxString s;
- s.Alloc(Strlen(psz) + string.Len());
- s = string;
+ if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s = str;
s += psz;
return s;
}
-wxString operator+(const char *psz, const wxString& string)
+wxString operator+(const wxChar *psz, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
wxString s;
- s.Alloc(Strlen(psz) + string.Len());
+ if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
s = psz;
- s += string;
+ s += str;
return s;
}
// other common string functions
// ===========================================================================
+#if wxUSE_UNICODE
+
+wxString wxString::FromAscii(const char *ascii)
+{
+ if (!ascii)
+ return wxEmptyString;
+
+ size_t len = strlen( ascii );
+ wxString res;
+
+ if ( len )
+ {
+ wxStringBuffer buf(res, len);
+
+ wchar_t *dest = buf;
+
+ for ( ;; )
+ {
+ if ( (*dest++ = (wchar_t)(unsigned char)*ascii++) == L'\0' )
+ break;
+ }
+ }
+
+ return res;
+}
+
+wxString wxString::FromAscii(const char ascii)
+{
+ // What do we do with '\0' ?
+
+ wxString res;
+ res += (wchar_t)(unsigned char) ascii;
+
+ return res;
+}
+
+const wxCharBuffer wxString::ToAscii() const
+{
+ // this will allocate enough space for the terminating NUL too
+ wxCharBuffer buffer(length());
+
+ signed char *dest = (signed char *)buffer.data();
+
+ const wchar_t *pwc = c_str();
+ for ( ;; )
+ {
+ *dest++ = *pwc > SCHAR_MAX ? '_' : *pwc;
+
+ // the output string can't have embedded NULs anyhow, so we can safely
+ // stop at first of them even if we do have any
+ if ( !*pwc++ )
+ break;
+ }
+
+ return buffer;
+}
+
+#endif // Unicode
+
// ---------------------------------------------------------------------------
// simple sub-string extraction
// ---------------------------------------------------------------------------
// helper function: clone the data attached to this string
-void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+bool wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
{
if ( nCopyLen == 0 ) {
dest.Init();
}
else {
- dest.AllocBuffer(nCopyLen);
- memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(char));
+ if ( !dest.AllocBuffer(nCopyLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+ memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
}
+ return TRUE;
}
// extract string of length nCount starting at nFirst
-// default value of nCount is 0 and means "till the end"
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+
+ // default value of nCount is wxSTRING_MAXLEN and means "till the end"
+ if ( nCount == wxSTRING_MAXLEN )
+ {
+ nCount = nLen - nFirst;
+ }
+
// out-of-bounds requests return sensible things
- if ( nCount == 0 )
- nCount = GetStringData()->nDataLength - nFirst;
+ if ( nFirst + nCount > nLen )
+ {
+ nCount = nLen - nFirst;
+ }
- if ( nFirst + nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength - nFirst;
- if ( nFirst > (size_t)GetStringData()->nDataLength )
+ if ( nFirst > nLen )
+ {
+ // AllocCopy() will return empty string
nCount = 0;
+ }
wxString dest;
- AllocCopy(dest, nCount, nFirst);
+ if ( !AllocCopy(dest, nCount, nFirst) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ }
+
return dest;
}
+// check that the tring starts with prefix and return the rest of the string
+// in the provided pointer if it is not NULL, otherwise return FALSE
+bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const
+{
+ wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
+
+ // first check if the beginning of the string matches the prefix: note
+ // that we don't have to check that we don't run out of this string as
+ // when we reach the terminating NUL, either prefix string ends too (and
+ // then it's ok) or we break out of the loop because there is no match
+ const wxChar *p = c_str();
+ while ( *prefix )
+ {
+ if ( *prefix++ != *p++ )
+ {
+ // no match
+ return FALSE;
+ }
+ }
+
+ if ( rest )
+ {
+ // put the rest of the string into provided pointer
+ *rest = p;
+ }
+
+ return TRUE;
+}
+
// extract nCount last (rightmost) characters
wxString wxString::Right(size_t nCount) const
{
nCount = GetStringData()->nDataLength;
wxString dest;
- AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount);
+ if ( !AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Right") );
+ }
return dest;
}
// get all characters after the last occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::Right(char ch) const
+wxString wxString::AfterLast(wxChar ch) const
{
wxString str;
int iPos = Find(ch, TRUE);
- if ( iPos == NOT_FOUND )
+ if ( iPos == wxNOT_FOUND )
str = *this;
else
str = c_str() + iPos + 1;
nCount = GetStringData()->nDataLength;
wxString dest;
- AllocCopy(dest, nCount, 0);
+ if ( !AllocCopy(dest, nCount, 0) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Left") );
+ }
return dest;
}
// get all characters before the first occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::Left(char ch) const
+wxString wxString::BeforeFirst(wxChar ch) const
{
wxString str;
- for ( const char *pc = m_pchData; *pc != '\0' && *pc != ch; pc++ )
+ for ( const wxChar *pc = m_pchData; *pc != wxT('\0') && *pc != ch; pc++ )
str += *pc;
return str;
/// get all characters before the last occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::Before(char ch) const
+wxString wxString::BeforeLast(wxChar ch) const
{
wxString str;
int iPos = Find(ch, TRUE);
- if ( iPos != NOT_FOUND && iPos != 0 )
+ if ( iPos != wxNOT_FOUND && iPos != 0 )
str = wxString(c_str(), iPos);
return str;
/// get all characters after the first occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::After(char ch) const
+wxString wxString::AfterFirst(wxChar ch) const
{
wxString str;
int iPos = Find(ch);
- if ( iPos != NOT_FOUND )
+ if ( iPos != wxNOT_FOUND )
str = c_str() + iPos + 1;
return str;
}
// replace first (or all) occurences of some substring with another one
-uint wxString::Replace(const char *szOld, const char *szNew, bool bReplaceAll)
+size_t wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
{
- uint uiCount = 0; // count of replacements made
+ size_t uiCount = 0; // count of replacements made
- uint uiOldLen = Strlen(szOld);
+ size_t uiOldLen = wxStrlen(szOld);
wxString strTemp;
- const char *pCurrent = m_pchData;
- const char *pSubstr;
- while ( *pCurrent != '\0' ) {
- pSubstr = strstr(pCurrent, szOld);
+ const wxChar *pCurrent = m_pchData;
+ const wxChar *pSubstr;
+ while ( *pCurrent != wxT('\0') ) {
+ pSubstr = wxStrstr(pCurrent, szOld);
if ( pSubstr == NULL ) {
// strTemp is unused if no replacements were made, so avoid the copy
if ( uiCount == 0 )
}
else {
// take chars before match
- strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
+ if ( !strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Replace") );
+ return 0;
+ }
strTemp += szNew;
pCurrent = pSubstr + uiOldLen; // restart after match
bool wxString::IsAscii() const
{
- const char *s = (const char*) *this;
+ const wxChar *s = (const wxChar*) *this;
while(*s){
if(!isascii(*s)) return(FALSE);
s++;
bool wxString::IsWord() const
{
- const char *s = (const char*) *this;
+ const wxChar *s = (const wxChar*) *this;
while(*s){
- if(!isalpha(*s)) return(FALSE);
+ if(!wxIsalpha(*s)) return(FALSE);
s++;
}
return(TRUE);
bool wxString::IsNumber() const
{
- const char *s = (const char*) *this;
+ const wxChar *s = (const wxChar*) *this;
+ if (wxStrlen(s))
+ if ((s[0] == '-') || (s[0] == '+')) s++;
while(*s){
- if(!isdigit(*s)) return(FALSE);
+ if(!wxIsdigit(*s)) return(FALSE);
s++;
}
return(TRUE);
wxString& wxString::MakeUpper()
{
- CopyBeforeWrite();
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::MakeUpper") );
+ return *this;
+ }
- for ( char *p = m_pchData; *p; p++ )
- *p = (char)toupper(*p);
+ for ( wxChar *p = m_pchData; *p; p++ )
+ *p = (wxChar)wxToupper(*p);
return *this;
}
wxString& wxString::MakeLower()
{
- CopyBeforeWrite();
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::MakeLower") );
+ return *this;
+ }
- for ( char *p = m_pchData; *p; p++ )
- *p = (char)tolower(*p);
+ for ( wxChar *p = m_pchData; *p; p++ )
+ *p = (wxChar)wxTolower(*p);
return *this;
}
// trimming and padding
// ---------------------------------------------------------------------------
+// some compilers (VC++ 6.0 not to name them) return TRUE for a call to
+// isspace('ê') in the C locale which seems to be broken to me, but we have to
+// live with this by checking that the character is a 7 bit one - even if this
+// may fail to detect some spaces (I don't know if Unicode doesn't have
+// space-like symbols somewhere except in the first 128 chars), it is arguably
+// still better than trimming away accented letters
+inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
+
// trims spaces (in the sense of isspace) from left or right side
wxString& wxString::Trim(bool bFromRight)
{
- CopyBeforeWrite();
-
- if ( bFromRight )
+ // first check if we're going to modify the string at all
+ if ( !IsEmpty() &&
+ (
+ (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
+ (!bFromRight && wxSafeIsspace(GetChar(0u)))
+ )
+ )
{
- // find last non-space character
- char *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( isspace(*psz) && (psz >= m_pchData) )
- psz--;
-
- // truncate at trailing space start
- *++psz = '\0';
- GetStringData()->nDataLength = psz - m_pchData;
- }
- else
- {
- // find first non-space character
- const char *psz = m_pchData;
- while ( isspace(*psz) )
- psz++;
-
- // fix up data and length
- int nDataLength = GetStringData()->nDataLength - (psz - m_pchData);
- memmove(m_pchData, psz, (nDataLength + 1)*sizeof(char));
- GetStringData()->nDataLength = nDataLength;
+ // ok, there is at least one space to trim
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Trim") );
+ return *this;
+ }
+
+ if ( bFromRight )
+ {
+ // find last non-space character
+ wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
+ while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )
+ psz--;
+
+ // truncate at trailing space start
+ *++psz = wxT('\0');
+ GetStringData()->nDataLength = psz - m_pchData;
+ }
+ else
+ {
+ // find first non-space character
+ const wxChar *psz = m_pchData;
+ while ( wxSafeIsspace(*psz) )
+ psz++;
+
+ // fix up data and length
+ int nDataLength = GetStringData()->nDataLength - (psz - (const wxChar*) m_pchData);
+ memmove(m_pchData, psz, (nDataLength + 1)*sizeof(wxChar));
+ GetStringData()->nDataLength = nDataLength;
+ }
}
return *this;
}
// adds nCount characters chPad to the string from either side
-wxString& wxString::Pad(size_t nCount, char chPad, bool bFromRight)
+wxString& wxString::Pad(size_t nCount, wxChar chPad, bool bFromRight)
{
wxString s(chPad, nCount);
// truncate the string
wxString& wxString::Truncate(size_t uiLen)
{
- *(m_pchData + uiLen) = '\0';
- GetStringData()->nDataLength = uiLen;
+ if ( uiLen < Len() ) {
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Truncate") );
+ return *this;
+ }
+
+ *(m_pchData + uiLen) = wxT('\0');
+ GetStringData()->nDataLength = uiLen;
+ }
+ //else: nothing to do, string is already short enough
return *this;
}
// ---------------------------------------------------------------------------
-// finding (return NOT_FOUND if not found and index otherwise)
+// finding (return wxNOT_FOUND if not found and index otherwise)
// ---------------------------------------------------------------------------
// find a character
-int wxString::Find(char ch, bool bFromEnd) const
+int wxString::Find(wxChar ch, bool bFromEnd) const
{
- const char *psz = bFromEnd ? strrchr(m_pchData, ch) : strchr(m_pchData, ch);
+ const wxChar *psz = bFromEnd ? wxStrrchr(m_pchData, ch) : wxStrchr(m_pchData, ch);
- return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+ return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
}
// find a sub-string (like strstr)
-int wxString::Find(const char *pszSub) const
+int wxString::Find(const wxChar *pszSub) const
+{
+ const wxChar *psz = wxStrstr(m_pchData, pszSub);
+
+ return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+}
+
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+bool wxString::ToLong(long *val, int base) const
+{
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtol(start, &end, base);
+
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
+}
+
+bool wxString::ToULong(unsigned long *val, int base) const
{
- const char *psz = strstr(m_pchData, pszSub);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
- return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtoul(start, &end, base);
+
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
+}
+
+bool wxString::ToDouble(double *val) const
+{
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToDouble") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtod(start, &end);
+
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
// ---------------------------------------------------------------------------
// formatted output
// ---------------------------------------------------------------------------
-int wxString::Printf(const char *pszFormat, ...)
+
+/* static */
+wxString wxString::Format(const wxChar *pszFormat, ...)
+{
+ va_list argptr;
+ va_start(argptr, pszFormat);
+
+ wxString s;
+ s.PrintfV(pszFormat, argptr);
+
+ va_end(argptr);
+
+ return s;
+}
+
+/* static */
+wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
+{
+ wxString s;
+ s.PrintfV(pszFormat, argptr);
+ return s;
+}
+
+int wxString::Printf(const wxChar *pszFormat, ...)
{
va_list argptr;
va_start(argptr, pszFormat);
return iLen;
}
-int wxString::PrintfV(const char* pszFormat, va_list argptr)
+int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
- static char s_szScratch[1024];
+ int size = 1024;
+ for ( ;; )
+ {
+ wxChar *buf = GetWriteBuf(size + 1);
+ if ( !buf )
+ {
+ // out of memory
+ return -1;
+ }
- int iLen = vsprintf(s_szScratch, pszFormat, argptr);
- AllocBeforeWrite(iLen);
- strcpy(m_pchData, s_szScratch);
+ int len = wxVsnprintf(buf, size, pszFormat, argptr);
- return iLen;
+ // some implementations of vsnprintf() don't NUL terminate the string
+ // if there is not enough space for it so always do it manually
+ buf[size] = _T('\0');
+
+ UngetWriteBuf();
+
+ if ( len >= 0 )
+ {
+ // ok, there was enough space
+ break;
+ }
+
+ // still not enough, double it again
+ size *= 2;
+ }
+
+ // we could have overshot
+ Shrink();
+
+ return Len();
}
// ----------------------------------------------------------------------------
// misc other operations
// ----------------------------------------------------------------------------
-bool wxString::Matches(const char *pszMask) const
-{
- // check char by char
- const char *pszTxt;
- for ( pszTxt = c_str(); *pszMask != '\0'; pszMask++, pszTxt++ ) {
+
+// returns TRUE if the string matches the pattern which may contain '*' and
+// '?' metacharacters (as usual, '?' matches any character and '*' any number
+// of them)
+bool wxString::Matches(const wxChar *pszMask) const
+{
+ // I disable this code as it doesn't seem to be faster (in fact, it seems
+ // to be much slower) than the old, hand-written code below and using it
+ // here requires always linking with libregex even if the user code doesn't
+ // use it
+#if 0 // wxUSE_REGEX
+ // first translate the shell-like mask into a regex
+ wxString pattern;
+ pattern.reserve(wxStrlen(pszMask));
+
+ pattern += _T('^');
+ while ( *pszMask )
+ {
+ switch ( *pszMask )
+ {
+ case _T('?'):
+ pattern += _T('.');
+ break;
+
+ case _T('*'):
+ pattern += _T(".*");
+ break;
+
+ case _T('^'):
+ case _T('.'):
+ case _T('$'):
+ case _T('('):
+ case _T(')'):
+ case _T('|'):
+ case _T('+'):
+ case _T('\\'):
+ // these characters are special in a RE, quote them
+ // (however note that we don't quote '[' and ']' to allow
+ // using them for Unix shell like matching)
+ pattern += _T('\\');
+ // fall through
+
+ default:
+ pattern += *pszMask;
+ }
+
+ pszMask++;
+ }
+ pattern += _T('$');
+
+ // and now use it
+ return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
+#else // !wxUSE_REGEX
+ // TODO: this is, of course, awfully inefficient...
+
+ // the char currently being checked
+ const wxChar *pszTxt = c_str();
+
+ // the last location where '*' matched
+ const wxChar *pszLastStarInText = NULL;
+ const wxChar *pszLastStarInMask = NULL;
+
+match:
+ for ( ; *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
switch ( *pszMask ) {
- case '?':
- if ( *pszTxt == '\0' )
+ case wxT('?'):
+ if ( *pszTxt == wxT('\0') )
return FALSE;
- pszTxt++;
- pszMask++;
+ // pszTxt and pszMask will be incremented in the loop statement
+
break;
- case '*':
+ case wxT('*'):
{
+ // remember where we started to be able to backtrack later
+ pszLastStarInText = pszTxt;
+ pszLastStarInMask = pszMask;
+
// ignore special chars immediately following this one
- while ( *pszMask == '*' || *pszMask == '?' )
+ // (should this be an error?)
+ while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
pszMask++;
// if there is nothing more, match
- if ( *pszMask == '\0' )
+ if ( *pszMask == wxT('\0') )
return TRUE;
// are there any other metacharacters in the mask?
- uint uiLenMask;
- const char *pEndMask = strpbrk(pszMask, "*?");
+ size_t uiLenMask;
+ const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));
if ( pEndMask != NULL ) {
// we have to match the string between two metachars
}
else {
// we have to match the remainder of the string
- uiLenMask = strlen(pszMask);
+ uiLenMask = wxStrlen(pszMask);
}
wxString strToMatch(pszMask, uiLenMask);
- const char* pMatch = strstr(pszTxt, strToMatch);
+ const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
if ( pMatch == NULL )
return FALSE;
}
// match only if nothing left
- return *pszTxt == '\0';
+ if ( *pszTxt == wxT('\0') )
+ return TRUE;
+
+ // if we failed to match, backtrack if we can
+ if ( pszLastStarInText ) {
+ pszTxt = pszLastStarInText + 1;
+ pszMask = pszLastStarInMask;
+
+ pszLastStarInText = NULL;
+
+ // don't bother resetting pszLastStarInMask, it's unnecessary
+
+ goto match;
+ }
+
+ return FALSE;
+#endif // wxUSE_REGEX/!wxUSE_REGEX
+}
+
+// Count the number of chars
+int wxString::Freq(wxChar ch) const
+{
+ int count = 0;
+ int len = Len();
+ for (int i = 0; i < len; i++)
+ {
+ if (GetChar(i) == ch)
+ count ++;
+ }
+ return count;
}
+// convert to upper case, return the copy of the string
+wxString wxString::Upper() const
+{ wxString s(*this); return s.MakeUpper(); }
+
+// convert to lower case, return the copy of the string
+wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }
+
+int wxString::sprintf(const wxChar *pszFormat, ...)
+ {
+ va_list argptr;
+ va_start(argptr, pszFormat);
+ int iLen = PrintfV(pszFormat, argptr);
+ va_end(argptr);
+ return iLen;
+ }
+
// ---------------------------------------------------------------------------
// standard C++ library string functions
// ---------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
+
+#ifdef wxSTD_STRING_COMPATIBILITY
+
+void wxString::resize(size_t nSize, wxChar ch)
+{
+ size_t len = length();
+
+ if ( nSize < len )
+ {
+ Truncate(nSize);
+ }
+ else if ( nSize > len )
+ {
+ *this += wxString(ch, nSize - len);
+ }
+ //else: we have exactly the specified length, nothing to do
+}
+
+void wxString::swap(wxString& str)
+{
+ // this is slightly less efficient than fiddling with m_pchData directly,
+ // but it is still quite efficient as we don't copy the string here because
+ // ref count always stays positive
+ wxString tmp = str;
+ str = *this;
+ *this = tmp;
+}
wxString& wxString::insert(size_t nPos, const wxString& str)
{
wxASSERT( str.GetStringData()->IsValid() );
wxASSERT( nPos <= Len() );
- wxString strTmp;
- char *pc = strTmp.GetWriteBuf(Len() + str.Len());
- strncpy(pc, c_str(), nPos);
- strcpy(pc + nPos, str);
- strcpy(pc + nPos + str.Len(), c_str() + nPos);
- strTmp.UngetWriteBuf();
- *this = strTmp;
+ if ( !str.IsEmpty() ) {
+ wxString strTmp;
+ wxChar *pc = strTmp.GetWriteBuf(Len() + str.Len());
+ wxStrncpy(pc, c_str(), nPos);
+ wxStrcpy(pc + nPos, str);
+ wxStrcpy(pc + nPos + str.Len(), c_str() + nPos);
+ strTmp.UngetWriteBuf();
+ *this = strTmp;
+ }
return *this;
}
wxASSERT( str.GetStringData()->IsValid() );
wxASSERT( nStart <= Len() );
- const char *p = strstr(c_str() + nStart, str);
+ const wxChar *p = wxStrstr(c_str() + nStart, str);
return p == NULL ? npos : p - c_str();
}
// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
-size_t wxString::find(const char* sz, size_t nStart, size_t n) const
+#if !defined(__VISUALC__) || defined(__WIN32__)
+size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
{
- return find(wxString(sz, n == npos ? 0 : n), nStart);
+ return find(wxString(sz, n), nStart);
}
-#endif
+#endif // VC++ 1.5
-size_t wxString::find(char ch, size_t nStart) const
+// Gives a duplicate symbol (presumably a case-insensitivity problem)
+#if !defined(__BORLANDC__)
+size_t wxString::find(wxChar ch, size_t nStart) const
{
wxASSERT( nStart <= Len() );
- const char *p = strchr(c_str() + nStart, ch);
+ const wxChar *p = wxStrchr(c_str() + nStart, ch);
return p == NULL ? npos : p - c_str();
}
+#endif
size_t wxString::rfind(const wxString& str, size_t nStart) const
{
wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= Len() );
+ wxASSERT( nStart == npos || nStart <= Len() );
- // # could be quicker than that
- const char *p = c_str() + (nStart == npos ? Len() : nStart);
+ // TODO could be made much quicker than that
+ const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
while ( p >= c_str() + str.Len() ) {
- if ( strncmp(p - str.Len(), str, str.Len()) == 0 )
+ if ( wxStrncmp(p - str.Len(), str, str.Len()) == 0 )
return p - str.Len() - c_str();
p--;
}
}
// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
-size_t wxString::rfind(const char* sz, size_t nStart, size_t n) const
+#if !defined(__VISUALC__) || defined(__WIN32__)
+size_t wxString::rfind(const wxChar* sz, size_t nStart, size_t n) const
{
- return rfind(wxString(sz, n == npos ? 0 : n), nStart);
+ return rfind(wxString(sz, n == npos ? wxSTRING_MAXLEN : n), nStart);
}
-size_t wxString::rfind(char ch, size_t nStart) const
+size_t wxString::rfind(wxChar ch, size_t nStart) const
{
- wxASSERT( nStart <= Len() );
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
- const char *p = strrchr(c_str() + nStart, ch);
+ const wxChar *p = wxStrrchr(c_str(), ch);
- return p == NULL ? npos : p - c_str();
+ if ( p == NULL )
+ return npos;
+
+ size_t result = p - c_str();
+ return ( result > nStart ) ? npos : result;
+}
+#endif // VC++ 1.5
+
+size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
+{
+ const wxChar *start = c_str() + nStart;
+ const wxChar *firstOf = wxStrpbrk(start, sz);
+ if ( firstOf )
+ return firstOf - c_str();
+ else
+ return npos;
+}
+
+size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
+
+ for ( const wxChar *p = c_str() + length() - 1; p >= c_str(); p-- )
+ {
+ if ( wxStrchr(sz, *p) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
+
+ size_t nAccept = wxStrspn(c_str() + nStart, sz);
+ if ( nAccept >= length() - nStart )
+ return npos;
+ else
+ return nAccept;
+}
+
+size_t wxString::find_first_not_of(wxChar ch, size_t nStart) const
+{
+ wxASSERT( nStart <= Len() );
+
+ for ( const wxChar *p = c_str() + nStart; *p; p++ )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
}
-#endif
-wxString wxString::substr(size_t nStart, size_t nLen) const
+size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
{
- // npos means 'take all'
- if ( nLen == npos )
- nLen = 0;
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
- wxASSERT( nStart + nLen <= Len() );
+ for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
+ {
+ if ( !wxStrchr(sz, *p) )
+ return p - c_str();
+ }
- return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
+ return npos;
+}
+
+size_t wxString::find_last_not_of(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
}
wxString& wxString::erase(size_t nStart, size_t nLen)
return *this;
}
-wxString& wxString::replace(size_t nStart, size_t nLen, const char *sz)
+wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
{
- wxASSERT( nStart + nLen <= Strlen(sz) );
+ wxASSERT_MSG( nStart + nLen <= Len(),
+ _T("index out of bounds in wxString::replace") );
wxString strTmp;
+ strTmp.Alloc(Len()); // micro optimisation to avoid multiple mem allocs
+
if ( nStart != 0 )
strTmp.append(c_str(), nStart);
- strTmp += sz;
- strTmp.append(c_str() + nStart + nLen);
+ strTmp << sz << c_str() + nStart + nLen;
*this = strTmp;
return *this;
}
-wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, char ch)
+wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch)
{
return replace(nStart, nLen, wxString(ch, nCount));
}
}
wxString& wxString::replace(size_t nStart, size_t nLen,
- const char* sz, size_t nCount)
+ const wxChar* sz, size_t nCount)
{
return replace(nStart, nLen, wxString(sz, nCount));
}
// ArrayString
// ============================================================================
-// size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT)
+// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
#define ARRAY_MAXSIZE_INCREMENT 4096
+
#ifndef ARRAY_DEFAULT_INITIAL_SIZE // also defined in dynarray.h
- #define ARRAY_DEFAULT_INITIAL_SIZE (16)
+#define ARRAY_DEFAULT_INITIAL_SIZE (16)
#endif
#define STRING(p) ((wxString *)(&(p)))
// ctor
-wxArrayString::wxArrayString()
+void wxArrayString::Init(bool autoSort)
{
m_nSize =
m_nCount = 0;
- m_pItems = NULL;
+ m_pItems = (wxChar **) NULL;
+ m_autoSort = autoSort;
}
// copy ctor
wxArrayString::wxArrayString(const wxArrayString& src)
{
- m_nSize =
- m_nCount = 0;
- m_pItems = NULL;
+ Init(src.m_autoSort);
*this = src;
}
// assignment operator
wxArrayString& wxArrayString::operator=(const wxArrayString& src)
{
- Clear();
+ if ( m_nSize > 0 )
+ Clear();
+
+ Copy(src);
- m_nSize = 0;
+ m_autoSort = src.m_autoSort;
+
+ return *this;
+}
+
+void wxArrayString::Copy(const wxArrayString& src)
+{
if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
Alloc(src.m_nCount);
- // we can't just copy the pointers here because otherwise we would share
- // the strings with another array
- for ( uint n = 0; n < src.m_nCount; n++ )
+ for ( size_t n = 0; n < src.m_nCount; n++ )
Add(src[n]);
-
- if ( m_nCount != 0 )
- memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(char *));
-
- return *this;
}
// grow the array
-void wxArrayString::Grow()
+void wxArrayString::Grow(size_t nIncrement)
{
// only do it if no more place
- if( m_nCount == m_nSize ) {
- if( m_nSize == 0 ) {
+ if ( (m_nSize - m_nCount) < nIncrement ) {
+ // if ARRAY_DEFAULT_INITIAL_SIZE were set to 0, the initially empty would
+ // be never resized!
+ #if ARRAY_DEFAULT_INITIAL_SIZE == 0
+ #error "ARRAY_DEFAULT_INITIAL_SIZE must be > 0!"
+ #endif
+
+ if ( m_nSize == 0 ) {
// was empty, alloc some memory
m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
- m_pItems = new char *[m_nSize];
+ if (m_nSize < nIncrement)
+ m_nSize = nIncrement;
+ m_pItems = new wxChar *[m_nSize];
}
else {
// otherwise when it's called for the first time, nIncrement would be 0
// and the array would never be expanded
- wxASSERT( ARRAY_DEFAULT_INITIAL_SIZE != 0 );
-
// add 50% but not too much
- size_t nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
+ size_t ndefIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
- if ( nIncrement > ARRAY_MAXSIZE_INCREMENT )
- nIncrement = ARRAY_MAXSIZE_INCREMENT;
+ if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT )
+ ndefIncrement = ARRAY_MAXSIZE_INCREMENT;
+ if ( nIncrement < ndefIncrement )
+ nIncrement = ndefIncrement;
m_nSize += nIncrement;
- char **pNew = new char *[m_nSize];
+ wxChar **pNew = new wxChar *[m_nSize];
// copy data to new location
- memcpy(pNew, m_pItems, m_nCount*sizeof(char *));
+ memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
// delete old memory (but do not release the strings!)
wxDELETEA(m_pItems);
// pre-allocates memory (frees the previous data!)
void wxArrayString::Alloc(size_t nSize)
{
- wxASSERT( nSize > 0 );
-
// only if old buffer was not big enough
if ( nSize > m_nSize ) {
Free();
wxDELETEA(m_pItems);
- m_pItems = new char *[nSize];
+ m_pItems = new wxChar *[nSize];
m_nSize = nSize;
}
m_nCount = 0;
}
-// searches the array for an item (forward or backwards)
-int wxArrayString::Index(const char *sz, bool bCase, bool bFromEnd) const
+// minimizes the memory usage by freeing unused memory
+void wxArrayString::Shrink()
{
- if ( bFromEnd ) {
- if ( m_nCount > 0 ) {
- uint ui = m_nCount;
- do {
- if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
- return ui;
- }
- while ( ui != 0 );
+ // only do it if we have some memory to free
+ if( m_nCount < m_nSize ) {
+ // allocates exactly as much memory as we need
+ wxChar **pNew = new wxChar *[m_nCount];
+
+ // copy data to new location
+ memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
+ delete [] m_pItems;
+ m_pItems = pNew;
+ }
+}
+
+// return a wxString[] as required for some control ctors.
+wxString* wxArrayString::GetStringArray() const
+{
+ wxString *array = 0;
+
+ if( m_nCount > 0 )
+ {
+ array = new wxString[m_nCount];
+ for( size_t i = 0; i < m_nCount; i++ )
+ array[i] = m_pItems[i];
+ }
+
+ return array;
+}
+
+// searches the array for an item (forward or backwards)
+int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
+{
+ if ( m_autoSort ) {
+ // use binary search in the sorted array
+ wxASSERT_MSG( bCase && !bFromEnd,
+ wxT("search parameters ignored for auto sorted array") );
+
+ size_t i,
+ lo = 0,
+ hi = m_nCount;
+ int res;
+ while ( lo < hi ) {
+ i = (lo + hi)/2;
+
+ res = wxStrcmp(sz, m_pItems[i]);
+ if ( res < 0 )
+ hi = i;
+ else if ( res > 0 )
+ lo = i + 1;
+ else
+ return i;
}
+
+ return wxNOT_FOUND;
}
else {
- for( uint ui = 0; ui < m_nCount; ui++ ) {
- if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
- return ui;
+ // use linear search in unsorted array
+ if ( bFromEnd ) {
+ if ( m_nCount > 0 ) {
+ size_t ui = m_nCount;
+ do {
+ if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
+ return ui;
+ }
+ while ( ui != 0 );
+ }
+ }
+ else {
+ for( size_t ui = 0; ui < m_nCount; ui++ ) {
+ if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
+ return ui;
+ }
}
}
- return NOT_FOUND;
+ return wxNOT_FOUND;
}
// add item at the end
-void wxArrayString::Add(const wxString& str)
-{
- wxASSERT( str.GetStringData()->IsValid() );
+size_t wxArrayString::Add(const wxString& str, size_t nInsert)
+{
+ if ( m_autoSort ) {
+ // insert the string at the correct position to keep the array sorted
+ size_t i,
+ lo = 0,
+ hi = m_nCount;
+ int res;
+ while ( lo < hi ) {
+ i = (lo + hi)/2;
+
+ res = wxStrcmp(str, m_pItems[i]);
+ if ( res < 0 )
+ hi = i;
+ else if ( res > 0 )
+ lo = i + 1;
+ else {
+ lo = hi = i;
+ break;
+ }
+ }
+
+ wxASSERT_MSG( lo == hi, wxT("binary search broken") );
- Grow();
+ Insert(str, lo, nInsert);
- // the string data must not be deleted!
- str.GetStringData()->Lock();
- m_pItems[m_nCount++] = (char *)str.c_str();
+ return (size_t)lo;
+ }
+ else {
+ wxASSERT( str.GetStringData()->IsValid() );
+
+ Grow(nInsert);
+
+ for (size_t i = 0; i < nInsert; i++)
+ {
+ // the string data must not be deleted!
+ str.GetStringData()->Lock();
+
+ // just append
+ m_pItems[m_nCount + i] = (wxChar *)str.c_str(); // const_cast
+ }
+ size_t ret = m_nCount;
+ m_nCount += nInsert;
+ return ret;
+ }
}
// add item at the given position
-void wxArrayString::Insert(const wxString& str, size_t nIndex)
+void wxArrayString::Insert(const wxString& str, size_t nIndex, size_t nInsert)
{
wxASSERT( str.GetStringData()->IsValid() );
- wxCHECK_RET( nIndex <= m_nCount, "bad index in wxArrayString::Insert" );
+ wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Insert") );
+ wxCHECK_RET( m_nCount <= m_nCount + nInsert,
+ wxT("array size overflow in wxArrayString::Insert") );
+
+ Grow(nInsert);
- Grow();
+ memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex],
+ (m_nCount - nIndex)*sizeof(wxChar *));
- memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex],
- (m_nCount - nIndex)*sizeof(char *));
+ for (size_t i = 0; i < nInsert; i++)
+ {
+ str.GetStringData()->Lock();
+ m_pItems[nIndex + i] = (wxChar *)str.c_str();
+ }
+ m_nCount += nInsert;
+}
- str.GetStringData()->Lock();
- m_pItems[nIndex] = (char *)str.c_str();
+// expand the array
+void wxArrayString::SetCount(size_t count)
+{
+ Alloc(count);
- m_nCount++;
+ wxString s;
+ while ( m_nCount < count )
+ m_pItems[m_nCount++] = (wxChar *)s.c_str();
}
// removes item from array (by index)
-void wxArrayString::Remove(size_t nIndex)
+void wxArrayString::Remove(size_t nIndex, size_t nRemove)
{
- wxCHECK_RET( nIndex <= m_nCount, "bad index in wxArrayString::Remove" );
+ wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArrayString::Remove") );
+ wxCHECK_RET( nIndex + nRemove <= m_nCount,
+ wxT("removing too many elements in wxArrayString::Remove") );
// release our lock
- Item(nIndex).GetStringData()->Unlock();
+ for (size_t i = 0; i < nRemove; i++)
+ Item(nIndex + i).GetStringData()->Unlock();
- memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1],
- (m_nCount - nIndex - 1)*sizeof(char *));
- m_nCount--;
+ memmove(&m_pItems[nIndex], &m_pItems[nIndex + nRemove],
+ (m_nCount - nIndex - nRemove)*sizeof(wxChar *));
+ m_nCount -= nRemove;
}
// removes item from array (by value)
-void wxArrayString::Remove(const char *sz)
+void wxArrayString::Remove(const wxChar *sz)
{
int iIndex = Index(sz);
- wxCHECK_RET( iIndex != NOT_FOUND,
- "removing inexistent element in wxArrayString::Remove" );
+ wxCHECK_RET( iIndex != wxNOT_FOUND,
+ wxT("removing inexistent element in wxArrayString::Remove") );
- Remove((size_t)iIndex);
+ Remove(iIndex);
+}
+
+// ----------------------------------------------------------------------------
+// sorting
+// ----------------------------------------------------------------------------
+
+// we can only sort one array at a time with the quick-sort based
+// implementation
+#if wxUSE_THREADS
+ // need a critical section to protect access to gs_compareFunction and
+ // gs_sortAscending variables
+ static wxCriticalSection *gs_critsectStringSort = NULL;
+
+ // call this before the value of the global sort vars is changed/after
+ // you're finished with them
+ #define START_SORT() wxASSERT( !gs_critsectStringSort ); \
+ gs_critsectStringSort = new wxCriticalSection; \
+ gs_critsectStringSort->Enter()
+ #define END_SORT() gs_critsectStringSort->Leave(); \
+ delete gs_critsectStringSort; \
+ gs_critsectStringSort = NULL
+#else // !threads
+ #define START_SORT()
+ #define END_SORT()
+#endif // wxUSE_THREADS
+
+// function to use for string comparaison
+static wxArrayString::CompareFunction gs_compareFunction = NULL;
+
+// if we don't use the compare function, this flag tells us if we sort the
+// array in ascending or descending order
+static bool gs_sortAscending = TRUE;
+
+// function which is called by quick sort
+extern "C" int wxC_CALLING_CONV // LINKAGEMODE
+wxStringCompareFunction(const void *first, const void *second)
+{
+ wxString *strFirst = (wxString *)first;
+ wxString *strSecond = (wxString *)second;
+
+ if ( gs_compareFunction ) {
+ return gs_compareFunction(*strFirst, *strSecond);
+ }
+ else {
+ // maybe we should use wxStrcoll
+ int result = wxStrcmp(strFirst->c_str(), strSecond->c_str());
+
+ return gs_sortAscending ? result : -result;
+ }
}
// sort array elements using passed comparaison function
+void wxArrayString::Sort(CompareFunction compareFunction)
+{
+ START_SORT();
+
+ wxASSERT( !gs_compareFunction ); // must have been reset to NULL
+ gs_compareFunction = compareFunction;
+
+ DoSort();
+
+ // reset it to NULL so that Sort(bool) will work the next time
+ gs_compareFunction = NULL;
+
+ END_SORT();
+}
+
+void wxArrayString::Sort(bool reverseOrder)
+{
+ START_SORT();
+
+ wxASSERT( !gs_compareFunction ); // must have been reset to NULL
+ gs_sortAscending = !reverseOrder;
-void wxArrayString::Sort(bool WXUNUSED(bCase), bool WXUNUSED(bReverse) )
+ DoSort();
+
+ END_SORT();
+}
+
+void wxArrayString::DoSort()
+{
+ wxCHECK_RET( !m_autoSort, wxT("can't use this method with sorted arrays") );
+
+ // just sort the pointers using qsort() - of course it only works because
+ // wxString() *is* a pointer to its data
+ qsort(m_pItems, m_nCount, sizeof(wxChar *), wxStringCompareFunction);
+}
+
+bool wxArrayString::operator==(const wxArrayString& a) const
{
- //@@@@ TO DO
- //qsort(m_pItems, m_nCount, sizeof(char *), fCmp);
+ if ( m_nCount != a.m_nCount )
+ return FALSE;
+
+ for ( size_t n = 0; n < m_nCount; n++ )
+ {
+ if ( Item(n) != a[n] )
+ return FALSE;
+ }
+
+ return TRUE;
}
+
projects / wxWidgets.git / blobdiff