/////////////////////////////////////////////////////////////////////////////
-// Name: string.cpp
+// Name: src/common/string.cpp
// Purpose: wxString class
-// Author: Vadim Zeitlin
+// Author: Vadim Zeitlin, Ryan Norton
// Modified by:
// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// (c) 2004 Ryan Norton <wxprojects@comcast.net>
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
- #pragma implementation "string.h"
-#endif
-
/*
* About ref counting:
* 1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
#include "wx/wxprec.h"
#ifdef __BORLANDC__
- #pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
- #include "wx/defs.h"
- #include "wx/string.h"
- #include "wx/intl.h"
- #include "wx/thread.h"
+ #include "wx/string.h"
+ #include "wx/intl.h"
+ #include "wx/thread.h"
#endif
#include <ctype.h>
#include <stdlib.h>
#ifdef __SALFORDC__
- #include <clib.h>
-#endif
-
-#if wxUSE_UNICODE
- #undef wxUSE_EXPERIMENTAL_PRINTF
- #define wxUSE_EXPERIMENTAL_PRINTF 1
+ #include <clib.h>
#endif
// allocating extra space for each string consumes more memory but speeds up
// static class variables definition
// ---------------------------------------------------------------------------
-#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
+#if !wxUSE_STL
+ //According to STL _must_ be a -1 size_t
+ const size_t wxStringBase::npos = (size_t) -1;
+#endif
// ----------------------------------------------------------------------------
// static data
// ----------------------------------------------------------------------------
+#if wxUSE_STL
+
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = _T("");
+
+#else
+
// 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)
} g_strEmpty = { {-1, 0, 0}, wxT('\0') };
// empty C style string: points to 'string data' byte of g_strEmpty
-extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
-
-// ----------------------------------------------------------------------------
-// conditional compilation
-// ----------------------------------------------------------------------------
-
-#if !defined(__WXSW__) && wxUSE_UNICODE
- #ifdef wxUSE_EXPERIMENTAL_PRINTF
- #undef wxUSE_EXPERIMENTAL_PRINTF
- #endif
- #define wxUSE_EXPERIMENTAL_PRINTF 1
-#endif
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = &g_strEmpty.dummy;
-// we want to find out if the current platform supports vsnprintf()-like
-// function: for Unix this is done with configure, for Windows we test the
-// compiler explicitly.
-//
-// FIXME currently, this is only for ANSI (!Unicode) strings, so we call this
-// function wxVsnprintfA (A for ANSI), should also find one for Unicode
-// strings in Unicode build
-#ifdef __WXMSW__
- #if defined(__VISUALC__) || (defined(__MINGW32__) && wxUSE_NORLANDER_HEADERS)
- #define wxVsnprintfA _vsnprintf
- #endif
-#elif defined(__WXMAC__)
- #define wxVsnprintfA vsnprintf
-#else // !Windows
- #ifdef HAVE_VSNPRINTF
- #define wxVsnprintfA vsnprintf
- #endif
-#endif // Windows/!Windows
-
-#ifndef wxVsnprintfA
- // in this case we'll use vsprintf() (which is ANSI and thus should be
- // always available), but it's unsafe because it doesn't check for buffer
- // size - so give a warning
- #define wxVsnprintfA(buf, len, format, arg) vsprintf(buf, format, arg)
-
- #if defined(__VISUALC__)
- #pragma message("Using sprintf() because no snprintf()-like function defined")
- #elif defined(__GNUG__)
- #warning "Using sprintf() because no snprintf()-like function defined"
- #endif //compiler
-#endif // no vsnprintf
-
-#if defined(_AIX)
- // AIX has vsnprintf, but there's no prototype in the system headers.
- extern "C" int vsnprintf(char* str, size_t n, const char* format, va_list ap);
#endif
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
-#if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
+#if 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!
+#include <iostream>
+
wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
{
#if 0
wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
{
- os << str.c_str();
- return os;
-}
-
-#endif //std::string compatibility
-
-extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
- const wxChar *format, va_list argptr)
-{
-#if wxUSE_UNICODE
- // FIXME should use wvsnprintf() or whatever if it's available
- wxString s;
- int iLen = s.PrintfV(format, argptr);
- if ( iLen != -1 )
- {
- wxStrncpy(buf, s.c_str(), len);
- buf[len-1] = wxT('\0');
- }
-
- return iLen;
-#else // ANSI
- // vsnprintf() will not terminate the string with '\0' if there is not
- // enough place, but we want the string to always be NUL terminated
- int rc = wxVsnprintfA(buf, len - 1, format, argptr);
- if ( rc == -1 )
- {
- buf[len] = 0;
- }
-
- return rc;
-#endif // Unicode/ANSI
+#ifdef __BORLANDC__
+ os << str.mb_str();
+#else
+ os << str.c_str();
+#endif
+ return os;
}
-extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
- const wxChar *format, ...)
-{
- va_list argptr;
- va_start(argptr, format);
-
- int iLen = wxVsnprintf(buf, len, format, argptr);
-
- va_end(argptr);
-
- return iLen;
-}
+#endif // wxUSE_STD_IOSTREAM
// ----------------------------------------------------------------------------
// private classes
class Averager
{
public:
- Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
+ Averager(const wxChar *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
~Averager()
- { printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
+ { wxPrintf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
void Add(size_t n) { m_nTotal += n; m_nCount++; }
private:
size_t m_nCount, m_nTotal;
- const char *m_sz;
+ const wxChar *m_sz;
} g_averageLength("allocation size"),
g_averageSummandLength("summand length"),
g_averageConcatHit("hit probability in concat"),
#define STATISTICS_ADD(av, val)
#endif // WXSTRING_STATISTICS
+#if !wxUSE_STL
+
// ===========================================================================
-// wxString class core
+// wxStringData class deallocation
// ===========================================================================
-// ---------------------------------------------------------------------------
-// construction
-// ---------------------------------------------------------------------------
-
-// constructs string of <nLength> copies of character <ch>
-wxString::wxString(wxChar ch, size_t nLength)
+#if defined(__VISUALC__) && defined(_MT) && !defined(_DLL)
+# pragma message (__FILE__ ": building with Multithreaded non DLL runtime has a performance impact on wxString!")
+void wxStringData::Free()
{
- Init();
-
- if ( nLength > 0 ) {
- AllocBuffer(nLength);
-
-#if wxUSE_UNICODE
- // memset only works on char
- for (size_t n=0; n<nLength; n++) m_pchData[n] = ch;
-#else
- memset(m_pchData, ch, nLength);
-#endif
- }
+ free(this);
}
+#endif
+
+// ===========================================================================
+// wxStringBase
+// ===========================================================================
// takes nLength elements of psz starting at nPos
-void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
+void wxStringBase::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
{
Init();
// if the length is not given, assume the string to be NUL terminated
- if ( nLength == wxSTRING_MAXLEN ) {
+ if ( nLength == npos ) {
wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
nLength = wxStrlen(psz + nPos);
if ( nLength > 0 ) {
// trailing '\0' is written in AllocBuffer()
- AllocBuffer(nLength);
- memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
+ if ( !AllocBuffer(nLength) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") );
+ return;
+ }
+ wxTmemcpy(m_pchData, psz + nPos, nLength);
}
}
-#ifdef wxSTD_STRING_COMPATIBILITY
-
// poor man's iterators are "void *" pointers
-wxString::wxString(const void *pStart, const void *pEnd)
+wxStringBase::wxStringBase(const void *pStart, const void *pEnd)
{
InitWith((const wxChar *)pStart, 0,
(const wxChar *)pEnd - (const wxChar *)pStart);
}
-#endif //std::string compatibility
-
-#if wxUSE_UNICODE
-
-// from multibyte string
-wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
-{
- // first get necessary size
- size_t nLen = psz ? conv.MB2WC((wchar_t *) NULL, psz, 0) : 0;
-
- // nLength is number of *Unicode* characters here!
- if ((nLen != (size_t)-1) && (nLen > nLength))
- nLen = nLength;
-
- // empty?
- if ( (nLen != 0) && (nLen != (size_t)-1) ) {
- AllocBuffer(nLen);
- conv.MB2WC(m_pchData, psz, nLen);
- }
- else {
- Init();
- }
-}
-
-#else // ANSI
-
-#if wxUSE_WCHAR_T
-// from wide string
-wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
+wxStringBase::wxStringBase(size_type n, wxChar ch)
{
- // first get necessary size
- size_t nLen = 0;
- if (pwz)
- {
- if (nLength == wxSTRING_MAXLEN)
- nLen = conv.WC2MB((char *) NULL, pwz, 0);
- else
- nLen = nLength;
- }
-
- // empty?
- if ( (nLen != 0) && (nLen != (size_t)-1) ) {
- AllocBuffer(nLen);
- conv.WC2MB(m_pchData, pwz, nLen);
- }
- else {
- Init();
- }
+ Init();
+ append(n, ch);
}
-#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 wxStringBase::AllocBuffer(size_t nLen)
{
// allocating 0 sized buffer doesn't make sense, all empty strings should
// reuse g_strEmpty
// 2) sizeof(wxStringData) for housekeeping info
wxStringData* pData = (wxStringData*)
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] = wxT('\0');
+ return true;
}
// must be called before changing this string
-void wxString::CopyBeforeWrite()
+bool wxStringBase::CopyBeforeWrite()
{
wxStringData* pData = GetStringData();
if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
size_t nLen = pData->nDataLength;
- AllocBuffer(nLen);
- memcpy(m_pchData, pData->data(), nLen*sizeof(wxChar));
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failures are handled by the caller
+ return false;
+ }
+ wxTmemcpy(m_pchData, pData->data(), nLen);
}
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 wxStringBase::AllocBeforeWrite(size_t nLen)
{
wxASSERT( nLen != 0 ); // doesn't make any sense
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 ) {
nLen += EXTRA_ALLOC;
- wxStringData *pDataOld = pData;
pData = (wxStringData*)
realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
- if ( !pData ) {
- // out of memory
- free(pDataOld);
- // FIXME we're going to crash...
- return;
+ 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
+
+ // it doesn't really matter what the string length is as it's going to be
+ // overwritten later but, for extra safety, set it to 0 for now as we may
+ // have some junk in m_pchData
+ GetStringData()->nDataLength = 0;
+
+ return true;
+}
+
+wxStringBase& wxStringBase::append(size_t n, wxChar ch)
+{
+ size_type len = length();
+
+ if ( !Alloc(len + n) || !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::append") );
+ }
+ GetStringData()->nDataLength = len + n;
+ m_pchData[len + n] = '\0';
+ for ( size_t i = 0; i < n; ++i )
+ m_pchData[len + i] = ch;
+ return *this;
+}
+
+void wxStringBase::resize(size_t nSize, wxChar ch)
+{
+ size_t len = length();
+
+ if ( nSize < len )
+ {
+ erase(begin() + nSize, end());
+ }
+ else if ( nSize > len )
+ {
+ append(nSize - len, ch);
+ }
+ //else: we have exactly the specified length, nothing to do
}
// allocate enough memory for nLen characters
-void wxString::Alloc(size_t nLen)
+bool wxStringBase::Alloc(size_t nLen)
{
wxStringData *pData = GetStringData();
if ( pData->nAllocLength <= nLen ) {
if ( pData->IsEmpty() ) {
nLen += EXTRA_ALLOC;
- wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ pData = (wxStringData *)
+ 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;
else if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
size_t nOldLen = pData->nDataLength;
- AllocBuffer(nLen);
- memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ // +1 to copy the terminator, too
+ memcpy(m_pchData, pData->data(), (nOldLen+1)*sizeof(wxChar));
+ GetStringData()->nDataLength = nOldLen;
}
else {
nLen += EXTRA_ALLOC;
- wxStringData *pDataOld = pData;
- wxStringData *p = (wxStringData *)
+ pData = (wxStringData *)
realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
- if ( p == NULL ) {
- // don't leak memory
- free(pDataOld);
-
- // FIXME 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()
+wxStringBase::iterator wxStringBase::begin()
{
- wxStringData *pData = GetStringData();
-
- size_t nLen = pData->nDataLength;
- void *p = realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
-
- wxASSERT_MSG( p != NULL, _T("can't free memory?") );
-
- 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;
+ if (length() > 0)
+ CopyBeforeWrite();
+ return m_pchData;
}
-// get the pointer to writable buffer of (at least) nLen bytes
-wxChar *wxString::GetWriteBuf(size_t nLen)
+wxStringBase::iterator wxStringBase::end()
{
- AllocBeforeWrite(nLen);
-
- wxASSERT( GetStringData()->nRefs == 1 );
- GetStringData()->Validate(FALSE);
-
- return m_pchData;
+ if (length() > 0)
+ CopyBeforeWrite();
+ return m_pchData + length();
}
-// put string back in a reasonable state after GetWriteBuf
-void wxString::UngetWriteBuf()
+wxStringBase::iterator wxStringBase::erase(iterator it)
{
- GetStringData()->nDataLength = wxStrlen(m_pchData);
- GetStringData()->Validate(TRUE);
+ size_type idx = it - begin();
+ erase(idx, 1);
+ return begin() + idx;
}
-void wxString::UngetWriteBuf(size_t nLen)
+wxStringBase& wxStringBase::erase(size_t nStart, size_t nLen)
{
- GetStringData()->nDataLength = nLen;
- GetStringData()->Validate(TRUE);
+ wxASSERT(nStart <= length());
+ size_t strLen = length() - nStart;
+ // delete nLen or up to the end of the string characters
+ nLen = strLen < nLen ? strLen : nLen;
+ wxString strTmp(c_str(), nStart);
+ strTmp.append(c_str() + nStart + nLen, length() - nStart - nLen);
+
+ swap(strTmp);
+ return *this;
}
-// ---------------------------------------------------------------------------
-// data access
-// ---------------------------------------------------------------------------
+wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
+{
+ wxASSERT( nPos <= length() );
-// all functions are inline in string.h
+ if ( n == npos ) n = wxStrlen(sz);
+ if ( n == 0 ) return *this;
-// ---------------------------------------------------------------------------
-// assignment operators
-// ---------------------------------------------------------------------------
+ if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
+ }
-// helper function: does real copy
-void wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+ memmove(m_pchData + nPos + n, m_pchData + nPos,
+ (length() - nPos) * sizeof(wxChar));
+ memcpy(m_pchData + nPos, sz, n * sizeof(wxChar));
+ GetStringData()->nDataLength = length() + n;
+ m_pchData[length()] = '\0';
+
+ return *this;
+}
+
+void wxStringBase::swap(wxStringBase& str)
{
- if ( nSrcLen == 0 ) {
- Reinit();
- }
- else {
- AllocBeforeWrite(nSrcLen);
- memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
- GetStringData()->nDataLength = nSrcLen;
- m_pchData[nSrcLen] = wxT('\0');
- }
+ wxChar* tmp = str.m_pchData;
+ str.m_pchData = m_pchData;
+ m_pchData = tmp;
}
-// assigns one string to another
-wxString& wxString::operator=(const wxString& stringSrc)
+size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
{
- wxASSERT( stringSrc.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT( nStart <= length() );
- // don't copy string over itself
- if ( m_pchData != stringSrc.m_pchData ) {
- if ( stringSrc.GetStringData()->IsEmpty() ) {
- Reinit();
- }
- else {
- // adjust references
- GetStringData()->Unlock();
- m_pchData = stringSrc.m_pchData;
- GetStringData()->Lock();
+ //anchor
+ const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
+ str.c_str()[0],
+ length() - nStart);
+
+ if(!p)
+ return npos;
+
+ while(p - c_str() + str.length() <= length() &&
+ wxTmemcmp(p, str.c_str(), str.length()) )
+ {
+ //Previosly passed as the first argument to wxTmemchr,
+ //but C/C++ standard does not specify evaluation order
+ //of arguments to functions -
+ //http://embedded.com/showArticle.jhtml?articleID=9900607
+ ++p;
+
+ //anchor again
+ p = (const wxChar*)wxTmemchr(p,
+ str.c_str()[0],
+ length() - (p - c_str()));
+
+ if(!p)
+ return npos;
}
- }
- return *this;
+ return (p - c_str() + str.length() <= length()) ? p - c_str() : npos;
}
-// assigns a single character
-wxString& wxString::operator=(wxChar ch)
+size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
{
- AssignCopy(1, &ch);
- return *this;
+ return find(wxStringBase(sz, n), nStart);
}
-
-// assigns C string
-wxString& wxString::operator=(const wxChar *psz)
+size_t wxStringBase::find(wxChar ch, size_t nStart) const
{
- AssignCopy(wxStrlen(psz), psz);
- return *this;
-}
+ wxASSERT( nStart <= length() );
-#if !wxUSE_UNICODE
+ const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
-{
- *this = (const char *)psz;
- return *this;
+ return p == NULL ? npos : p - c_str();
}
-#if wxUSE_WCHAR_T
-wxString& wxString::operator=(const wchar_t *pwz)
+size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
{
- wxString str(pwz);
- *this = str;
- return *this;
-}
-#endif
+ wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT( nStart == npos || nStart <= length() );
-#endif
+ if ( length() >= str.length() )
+ {
+ // avoids a corner case later
+ if ( length() == 0 && str.length() == 0 )
+ return 0;
-// ---------------------------------------------------------------------------
-// string concatenation
-// ---------------------------------------------------------------------------
+ // "top" is the point where search starts from
+ size_t top = length() - str.length();
-// add something to this string
-void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
-{
- STATISTICS_ADD(SummandLength, nSrcLen);
+ if ( nStart == npos )
+ nStart = length() - 1;
+ if ( nStart < top )
+ top = nStart;
- // concatenating an empty string is a NOP
- if ( nSrcLen > 0 ) {
- wxStringData *pData = GetStringData();
- size_t nLen = pData->nDataLength;
- size_t nNewLen = nLen + nSrcLen;
+ const wxChar *cursor = c_str() + top;
+ do
+ {
+ if ( wxTmemcmp(cursor, str.c_str(),
+ str.length()) == 0 )
+ {
+ return cursor - c_str();
+ }
+ } while ( cursor-- > c_str() );
+ }
- // alloc new buffer if current is too small
- if ( pData->IsShared() ) {
- STATISTICS_ADD(ConcatHit, 0);
+ return npos;
+}
- // we have to allocate another buffer
- wxStringData* pOldData = GetStringData();
- AllocBuffer(nNewLen);
- memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
- pOldData->Unlock();
- }
- else if ( nNewLen > pData->nAllocLength ) {
- STATISTICS_ADD(ConcatHit, 0);
+size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const
+{
+ return rfind(wxStringBase(sz, n), nStart);
+}
- // we have to grow the buffer
- Alloc(nNewLen);
+size_t wxStringBase::rfind(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length();
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
}
- else {
- STATISTICS_ADD(ConcatHit, 1);
- // the buffer is already big enough
+ const wxChar *actual;
+ for ( actual = c_str() + ( nStart == npos ? length() : nStart + 1 );
+ actual > c_str(); --actual )
+ {
+ if ( *(actual - 1) == ch )
+ return (actual - 1) - c_str();
}
- // should be enough space
- wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+ return npos;
+}
- // fast concatenation - all is done in our buffer
- memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const
+{
+ wxASSERT(nStart <= length());
- m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
- GetStringData()->nDataLength = nNewLen; // and fix the length
+ size_t len = wxStrlen(sz);
+
+ size_t i;
+ for(i = nStart; i < this->length(); ++i)
+ {
+ if (wxTmemchr(sz, *(c_str() + i), len))
+ break;
+ }
+
+ if(i == this->length())
+ return npos;
+ else
+ return i;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_first_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= length(),
+ _T("invalid index in find_last_of()") );
+ }
+
+ size_t len = wxStrlen(sz);
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( wxTmemchr(sz, *p, len) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_last_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length();
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ size_t len = wxStrlen(sz);
+
+ size_t i;
+ for(i = nStart; i < this->length(); ++i)
+ {
+ if (!wxTmemchr(sz, *(c_str() + i), len))
+ break;
+ }
+
+ if(i == this->length())
+ return npos;
+ else
+ return i;
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_first_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const
+{
+ wxASSERT( nStart <= length() );
+
+ for ( const wxChar *p = c_str() + nStart; *p; p++ )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ size_t len = wxStrlen(sz);
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( !wxTmemchr(sz, *p,len) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_last_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_not_of(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxChar *sz)
+{
+ wxASSERT_MSG( nStart <= length(),
+ _T("index out of bounds in wxStringBase::replace") );
+ size_t strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+
+ wxStringBase strTmp;
+ strTmp.reserve(length()); // micro optimisation to avoid multiple mem allocs
+
+ //This is kind of inefficient, but its pretty good considering...
+ //we don't want to use character access operators here because on STL
+ //it will freeze the reference count of strTmp, which means a deep copy
+ //at the end when swap is called
+ //
+ //Also, we can't use append with the full character pointer and must
+ //do it manually because this string can contain null characters
+ for(size_t i1 = 0; i1 < nStart; ++i1)
+ strTmp.append(1, this->c_str()[i1]);
+
+ //its safe to do the full version here because
+ //sz must be a normal c string
+ strTmp.append(sz);
+
+ for(size_t i2 = nStart + nLen; i2 < length(); ++i2)
+ strTmp.append(1, this->c_str()[i2]);
+
+ swap(strTmp);
+ return *this;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ size_t nCount, wxChar ch)
+{
+ return replace(nStart, nLen, wxStringBase(nCount, ch).c_str());
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxStringBase& str,
+ size_t nStart2, size_t nLen2)
+{
+ return replace(nStart, nLen, str.substr(nStart2, nLen2));
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount)
+{
+ return replace(nStart, nLen, wxStringBase(sz, nCount).c_str());
+}
+
+wxStringBase wxStringBase::substr(size_t nStart, size_t nLen) const
+{
+ if ( nLen == npos )
+ nLen = length() - nStart;
+ return wxStringBase(*this, nStart, nLen);
+}
+
+// assigns one string to another
+wxStringBase& wxStringBase::operator=(const wxStringBase& stringSrc)
+{
+ wxASSERT( stringSrc.GetStringData()->IsValid() );
+
+ // don't copy string over itself
+ if ( m_pchData != stringSrc.m_pchData ) {
+ if ( stringSrc.GetStringData()->IsEmpty() ) {
+ Reinit();
+ }
+ else {
+ // adjust references
+ GetStringData()->Unlock();
+ m_pchData = stringSrc.m_pchData;
+ GetStringData()->Lock();
+ }
+ }
+
+ return *this;
+}
+
+// assigns a single character
+wxStringBase& wxStringBase::operator=(wxChar ch)
+{
+ if ( !AssignCopy(1, &ch) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(wxChar)") );
+ }
+ return *this;
+}
+
+// assigns C string
+wxStringBase& wxStringBase::operator=(const wxChar *psz)
+{
+ if ( !AssignCopy(wxStrlen(psz), psz) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(const wxChar *)") );
+ }
+ return *this;
+}
+
+// helper function: does real copy
+bool wxStringBase::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+{
+ if ( nSrcLen == 0 ) {
+ Reinit();
+ }
+ else {
+ if ( !AllocBeforeWrite(nSrcLen) ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
+ GetStringData()->nDataLength = nSrcLen;
+ m_pchData[nSrcLen] = wxT('\0');
+ }
+ return true;
+}
+
+// ---------------------------------------------------------------------------
+// string concatenation
+// ---------------------------------------------------------------------------
+
+// add something to this string
+bool wxStringBase::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData,
+ size_t nMaxLen)
+{
+ STATISTICS_ADD(SummandLength, nSrcLen);
+
+ nSrcLen = nSrcLen < nMaxLen ? nSrcLen : nMaxLen;
+
+ // 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);
+
+ // 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);
+
+ reserve(nNewLen);
+ // we have to grow the buffer
+ if ( capacity() < nNewLen ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ }
+ else {
+ STATISTICS_ADD(ConcatHit, 1);
+
+ // the buffer is already big enough
+ }
+
+ // should be enough space
+ wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+
+ // fast concatenation - all is done in our buffer
+ memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
+
+ m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
+ GetStringData()->nDataLength = nNewLen; // and fix the length
}
//else: the string to append was empty
+ return true;
}
+// ---------------------------------------------------------------------------
+// simple sub-string extraction
+// ---------------------------------------------------------------------------
+
+// helper function: clone the data attached to this string
+bool wxStringBase::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+{
+ if ( nCopyLen == 0 ) {
+ dest.Init();
+ }
+ else {
+ if ( !dest.AllocBuffer(nCopyLen) ) {
+ // allocation failure handled by caller
+ return false;
+ }
+ memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
+ }
+ return true;
+}
+
+#endif // !wxUSE_STL
+
+#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+#if !wxUSE_STL
+ #define STRINGCLASS wxStringBase
+#else
+ #define STRINGCLASS wxString
+#endif
+
+static inline int wxDoCmp(const wxChar* s1, size_t l1,
+ const wxChar* s2, size_t l2)
+{
+ if( l1 == l2 )
+ return wxTmemcmp(s1, s2, l1);
+ else if( l1 < l2 )
+ {
+ int ret = wxTmemcmp(s1, s2, l1);
+ return ret == 0 ? -1 : ret;
+ }
+ else
+ {
+ int ret = wxTmemcmp(s1, s2, l2);
+ return ret == 0 ? +1 : ret;
+ }
+}
+
+int STRINGCLASS::compare(const wxStringBase& str) const
+{
+ return ::wxDoCmp(data(), length(), str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxStringBase& str) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+ return ::wxDoCmp(data() + nStart, nLen, str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxStringBase& str,
+ size_t nStart2, size_t nLen2) const
+{
+ wxASSERT(nStart <= length());
+ wxASSERT(nStart2 <= str.length());
+ size_type strLen = length() - nStart,
+ strLen2 = str.length() - nStart2;
+ nLen = strLen < nLen ? strLen : nLen;
+ nLen2 = strLen2 < nLen2 ? strLen2 : nLen2;
+ return ::wxDoCmp(data() + nStart, nLen, str.data() + nStart2, nLen2);
+}
+
+int STRINGCLASS::compare(const wxChar* sz) const
+{
+ size_t nLen = wxStrlen(sz);
+ return ::wxDoCmp(data(), length(), sz, nLen);
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+ if( nCount == npos )
+ nCount = wxStrlen(sz);
+
+ return ::wxDoCmp(data() + nStart, nLen, sz, nCount);
+}
+
+#undef STRINGCLASS
+
+#endif // !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+// ===========================================================================
+// wxString class core
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// construction and conversion
+// ---------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+
+// from multibyte string
+wxString::wxString(const char *psz, const wxMBConv& conv, size_t nLength)
+{
+ // anything to do?
+ if ( psz && nLength != 0 )
+ {
+ if ( nLength == npos )
+ {
+ nLength = wxNO_LEN;
+ }
+
+ size_t nLenWide;
+ wxWCharBuffer wbuf = conv.cMB2WC(psz, nLength, &nLenWide);
+
+ if ( nLenWide )
+ assign(wbuf, nLenWide);
+ }
+}
+
+//Convert wxString in Unicode mode to a multi-byte string
+const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
+{
+ return conv.cWC2MB(c_str(), length() + 1 /* size, not length */, NULL);
+}
+
+#else // ANSI
+
+#if wxUSE_WCHAR_T
+
+// from wide string
+wxString::wxString(const wchar_t *pwz, const wxMBConv& conv, size_t nLength)
+{
+ // anything to do?
+ if ( pwz && nLength != 0 )
+ {
+ if ( nLength == npos )
+ {
+ nLength = wxNO_LEN;
+ }
+
+ size_t nLenMB;
+ wxCharBuffer buf = conv.cWC2MB(pwz, nLength, &nLenMB);
+
+ if ( nLenMB )
+ assign(buf, nLenMB);
+ }
+}
+
+//Converts this string to a wide character string if unicode
+//mode is not enabled and wxUSE_WCHAR_T is enabled
+const wxWCharBuffer wxString::wc_str(const wxMBConv& conv) const
+{
+ return conv.cMB2WC(c_str(), length() + 1 /* size, not length */, NULL);
+}
+
+#endif // wxUSE_WCHAR_T
+
+#endif // Unicode/ANSI
+
+// shrink to minimal size (releasing extra memory)
+bool wxString::Shrink()
+{
+ wxString tmp(begin(), end());
+ swap(tmp);
+ return tmp.length() == length();
+}
+
+#if !wxUSE_STL
+// get the pointer to writable buffer of (at least) nLen bytes
+wxChar *wxString::GetWriteBuf(size_t nLen)
+{
+ if ( !AllocBeforeWrite(nLen) ) {
+ // allocation failure handled by caller
+ return NULL;
+ }
+
+ wxASSERT( GetStringData()->nRefs == 1 );
+ GetStringData()->Validate(false);
+
+ return m_pchData;
+}
+
+// put string back in a reasonable state after GetWriteBuf
+void wxString::UngetWriteBuf()
+{
+ GetStringData()->nDataLength = wxStrlen(m_pchData);
+ GetStringData()->Validate(true);
+}
+
+void wxString::UngetWriteBuf(size_t nLen)
+{
+ GetStringData()->nDataLength = nLen;
+ GetStringData()->Validate(true);
+}
+#endif
+
+// ---------------------------------------------------------------------------
+// data access
+// ---------------------------------------------------------------------------
+
+// all functions are inline in string.h
+
+// ---------------------------------------------------------------------------
+// assignment operators
+// ---------------------------------------------------------------------------
+
+#if !wxUSE_UNICODE
+
+// same as 'signed char' variant
+wxString& wxString::operator=(const unsigned char* psz)
+{
+ *this = (const char *)psz;
+ return *this;
+}
+
+#if wxUSE_WCHAR_T
+wxString& wxString::operator=(const wchar_t *pwz)
+{
+ wxString str(pwz);
+ swap(str);
+ return *this;
+}
+#endif
+
+#endif
+
/*
* concatenation functions come in 5 flavours:
* string + string
* 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() );
+#if !wxUSE_STL
+ wxASSERT( str1.GetStringData()->IsValid() );
+ wxASSERT( str2.GetStringData()->IsValid() );
+#endif
- wxString s = string1;
- s += string2;
+ wxString s = str1;
+ s += str2;
- return s;
+ return s;
}
-wxString operator+(const wxString& string, wxChar ch)
+wxString operator+(const wxString& str, wxChar ch)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
- wxString s = string;
- s += ch;
+ wxString s = str;
+ s += ch;
- return s;
+ return s;
}
-wxString operator+(wxChar ch, const wxString& string)
+wxString operator+(wxChar ch, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
- wxString s = ch;
- s += string;
+ wxString s = ch;
+ s += str;
- return s;
+ return s;
}
-wxString operator+(const wxString& string, const wxChar *psz)
+wxString operator+(const wxString& str, const wxChar *psz)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
- wxString s;
- s.Alloc(wxStrlen(psz) + string.Len());
- s = string;
- s += psz;
+ wxString s;
+ if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s += str;
+ s += psz;
- return s;
+ return s;
}
-wxString operator+(const wxChar *psz, const wxString& string)
+wxString operator+(const wxChar *psz, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
- wxString s;
- s.Alloc(wxStrlen(psz) + string.Len());
- s = psz;
- s += string;
+ wxString s;
+ if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s = psz;
+ s += str;
- return s;
+ return s;
}
// ===========================================================================
// other common string functions
// ===========================================================================
-// ---------------------------------------------------------------------------
-// simple sub-string extraction
-// ---------------------------------------------------------------------------
+int wxString::Cmp(const wxString& s) const
+{
+ return compare(s);
+}
-// helper function: clone the data attached to this string
-void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+int wxString::Cmp(const wxChar* psz) const
{
- if ( nCopyLen == 0 ) {
- dest.Init();
- }
- else {
- dest.AllocBuffer(nCopyLen);
- memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
- }
+ return compare(psz);
+}
+
+static inline int wxDoCmpNoCase(const wxChar* s1, size_t l1,
+ const wxChar* s2, size_t l2)
+{
+ size_t i;
+
+ if( l1 == l2 )
+ {
+ for(i = 0; i < l1; ++i)
+ {
+ if(wxTolower(s1[i]) != wxTolower(s2[i]))
+ break;
+ }
+ return i == l1 ? 0 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
+ }
+ else if( l1 < l2 )
+ {
+ for(i = 0; i < l1; ++i)
+ {
+ if(wxTolower(s1[i]) != wxTolower(s2[i]))
+ break;
+ }
+ return i == l1 ? -1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
+ }
+ else
+ {
+ for(i = 0; i < l2; ++i)
+ {
+ if(wxTolower(s1[i]) != wxTolower(s2[i]))
+ break;
+ }
+ return i == l2 ? 1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1;
+ }
+}
+
+int wxString::CmpNoCase(const wxString& s) const
+{
+ return wxDoCmpNoCase(data(), length(), s.data(), s.length());
}
+int wxString::CmpNoCase(const wxChar* psz) const
+{
+ int nLen = wxStrlen(psz);
+
+ return wxDoCmpNoCase(data(), length(), psz, nLen);
+}
+
+
+#if wxUSE_UNICODE
+
+#ifdef __MWERKS__
+#ifndef __SCHAR_MAX__
+#define __SCHAR_MAX__ 127
+#endif
+#endif
+
+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());
+
+
+ char *dest = buffer.data();
+
+ const wchar_t *pwc = c_str();
+ for ( ;; )
+ {
+ *dest++ = (char)(*pwc > SCHAR_MAX ? wxT('_') : *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
+
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
- wxStringData *pData = GetStringData();
- size_t nLen = pData->nDataLength;
+ size_t nLen = length();
- // default value of nCount is wxSTRING_MAXLEN and means "till the end"
- if ( nCount == wxSTRING_MAXLEN )
- {
- nCount = nLen - nFirst;
- }
+ // default value of nCount is npos and means "till the end"
+ if ( nCount == npos )
+ {
+ nCount = nLen - nFirst;
+ }
- // out-of-bounds requests return sensible things
- if ( nFirst + nCount > nLen )
- {
- nCount = nLen - nFirst;
- }
+ // out-of-bounds requests return sensible things
+ if ( nFirst + nCount > nLen )
+ {
+ nCount = nLen - nFirst;
+ }
- if ( nFirst > nLen )
- {
- // AllocCopy() will return empty string
- nCount = 0;
- }
+ if ( nFirst > nLen )
+ {
+ // AllocCopy() will return empty string
+ return wxEmptyString;
+ }
- wxString dest;
- AllocCopy(dest, nCount, nFirst);
+ wxString dest(*this, nFirst, nCount);
+ if ( dest.length() != nCount )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ }
- return dest;
+ 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
+// check that the string starts with prefix and return the rest of the string
+// in the provided pointer if it is not NULL, otherwise return false
bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const
{
wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
if ( *prefix++ != *p++ )
{
// no match
- return FALSE;
+ return false;
}
}
*rest = p;
}
- return TRUE;
+ return true;
+}
+
+
+// check that the string ends with suffix and return the rest of it in the
+// provided pointer if it is not NULL, otherwise return false
+bool wxString::EndsWith(const wxChar *suffix, wxString *rest) const
+{
+ wxASSERT_MSG( suffix, _T("invalid parameter in wxString::EndssWith") );
+
+ int start = length() - wxStrlen(suffix);
+ if ( start < 0 || wxStrcmp(c_str() + start, suffix) != 0 )
+ return false;
+
+ if ( rest )
+ {
+ // put the rest of the string into provided pointer
+ rest->assign(*this, 0, start);
+ }
+
+ return true;
}
+
// extract nCount last (rightmost) characters
wxString wxString::Right(size_t nCount) const
{
- if ( nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength;
+ if ( nCount > length() )
+ nCount = length();
- wxString dest;
- AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount);
+ wxString dest(*this, length() - nCount, nCount);
+ if ( dest.length() != nCount ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Right") );
+ }
return dest;
}
wxString wxString::AfterLast(wxChar ch) const
{
wxString str;
- int iPos = Find(ch, TRUE);
+ int iPos = Find(ch, true);
if ( iPos == wxNOT_FOUND )
str = *this;
else
// extract nCount first (leftmost) characters
wxString wxString::Left(size_t nCount) const
{
- if ( nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength;
+ if ( nCount > length() )
+ nCount = length();
- wxString dest;
- AllocCopy(dest, nCount, 0);
+ wxString dest(*this, 0, nCount);
+ if ( dest.length() != nCount ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Left") );
+ }
return dest;
}
// (returns the whole string if ch not found)
wxString wxString::BeforeFirst(wxChar ch) const
{
- wxString str;
- for ( const wxChar *pc = m_pchData; *pc != wxT('\0') && *pc != ch; pc++ )
- str += *pc;
-
- return str;
+ int iPos = Find(ch);
+ if ( iPos == wxNOT_FOUND ) iPos = length();
+ return wxString(*this, 0, iPos);
}
/// get all characters before the last occurence of ch
wxString wxString::BeforeLast(wxChar ch) const
{
wxString str;
- int iPos = Find(ch, TRUE);
+ int iPos = Find(ch, true);
if ( iPos != wxNOT_FOUND && iPos != 0 )
str = wxString(c_str(), iPos);
}
// replace first (or all) occurences of some substring with another one
-size_t wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
+size_t wxString::Replace(const wxChar *szOld,
+ const wxChar *szNew, bool bReplaceAll)
{
- size_t uiCount = 0; // count of replacements made
+ // if we tried to replace an empty string we'd enter an infinite loop below
+ wxCHECK_MSG( szOld && *szOld && szNew, 0,
+ _T("wxString::Replace(): invalid parameter") );
- size_t uiOldLen = wxStrlen(szOld);
+ size_t uiCount = 0; // count of replacements made
- wxString strTemp;
- 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 )
- return 0;
+ size_t uiOldLen = wxStrlen(szOld);
+ size_t uiNewLen = wxStrlen(szNew);
- strTemp += pCurrent; // copy the rest
- break; // exit the loop
- }
- else {
- // take chars before match
- strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
- strTemp += szNew;
- pCurrent = pSubstr + uiOldLen; // restart after match
+ size_t dwPos = 0;
- uiCount++;
+ while ( this->c_str()[dwPos] != wxT('\0') )
+ {
+ //DO NOT USE STRSTR HERE
+ //this string can contain embedded null characters,
+ //so strstr will function incorrectly
+ dwPos = find(szOld, dwPos);
+ if ( dwPos == npos )
+ break; // exit the loop
+ else
+ {
+ //replace this occurance of the old string with the new one
+ replace(dwPos, uiOldLen, szNew, uiNewLen);
- // stop now?
- if ( !bReplaceAll ) {
- strTemp += pCurrent; // copy the rest
- break; // exit the loop
- }
- }
- }
+ //move up pos past the string that was replaced
+ dwPos += uiNewLen;
- // only done if there were replacements, otherwise would have returned above
- *this = strTemp;
+ //increase replace count
+ ++uiCount;
- return uiCount;
+ // stop now?
+ if ( !bReplaceAll )
+ break; // exit the loop
+ }
+ }
+
+ return uiCount;
}
bool wxString::IsAscii() const
{
const wxChar *s = (const wxChar*) *this;
while(*s){
- if(!isascii(*s)) return(FALSE);
+ if(!isascii(*s)) return(false);
s++;
}
- return(TRUE);
+ return(true);
}
bool wxString::IsWord() const
{
const wxChar *s = (const wxChar*) *this;
while(*s){
- if(!wxIsalpha(*s)) return(FALSE);
+ if(!wxIsalpha(*s)) return(false);
s++;
}
- return(TRUE);
+ return(true);
}
bool wxString::IsNumber() const
{
const wxChar *s = (const wxChar*) *this;
if (wxStrlen(s))
- if ((s[0] == '-') || (s[0] == '+')) s++;
+ if ((s[0] == wxT('-')) || (s[0] == wxT('+'))) s++;
while(*s){
- if(!wxIsdigit(*s)) return(FALSE);
+ if(!wxIsdigit(*s)) return(false);
s++;
}
- return(TRUE);
+ return(true);
}
wxString wxString::Strip(stripType w) const
{
wxString s = *this;
- if ( w & leading ) s.Trim(FALSE);
- if ( w & trailing ) s.Trim(TRUE);
+ if ( w & leading ) s.Trim(false);
+ if ( w & trailing ) s.Trim(true);
return s;
}
wxString& wxString::MakeUpper()
{
- CopyBeforeWrite();
-
- for ( wxChar *p = m_pchData; *p; p++ )
- *p = (wxChar)wxToupper(*p);
+ for ( iterator it = begin(), en = end(); it != en; ++it )
+ *it = (wxChar)wxToupper(*it);
return *this;
}
wxString& wxString::MakeLower()
{
- CopyBeforeWrite();
-
- for ( wxChar *p = m_pchData; *p; p++ )
- *p = (wxChar)wxTolower(*p);
+ for ( iterator it = begin(), en = end(); it != en; ++it )
+ *it = (wxChar)wxTolower(*it);
return *this;
}
// trimming and padding
// ---------------------------------------------------------------------------
-// some compilers (VC++ 6.0 not to name them) return TRUE for a call to
+// 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
// trims spaces (in the sense of isspace) from left or right side
wxString& wxString::Trim(bool bFromRight)
{
- // first check if we're going to modify the string at all
- if ( !IsEmpty() &&
- (
- (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
- (!bFromRight && wxSafeIsspace(GetChar(0u)))
+ // first check if we're going to modify the string at all
+ if ( !empty() &&
+ (
+ (bFromRight && wxSafeIsspace(GetChar(length() - 1))) ||
+ (!bFromRight && wxSafeIsspace(GetChar(0u)))
+ )
)
- )
- {
- // ok, there is at least one space to trim
- CopyBeforeWrite();
-
- if ( bFromRight )
{
- // find last non-space character
- wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )
- psz--;
+ if ( bFromRight )
+ {
+ // find last non-space character
+ reverse_iterator psz = rbegin();
+ while ( (psz != rend()) && wxSafeIsspace(*psz) )
+ psz++;
+
+ // truncate at trailing space start
+ erase(psz.base(), end());
+ }
+ else
+ {
+ // find first non-space character
+ iterator psz = begin();
+ while ( (psz != end()) && wxSafeIsspace(*psz) )
+ psz++;
- // truncate at trailing space start
- *++psz = wxT('\0');
- GetStringData()->nDataLength = psz - m_pchData;
+ // fix up data and length
+ erase(begin(), psz);
+ }
}
- 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;
+ return *this;
}
// adds nCount characters chPad to the string from either side
wxString& wxString::Pad(size_t nCount, wxChar chPad, bool bFromRight)
{
- wxString s(chPad, nCount);
+ wxString s(chPad, nCount);
- if ( bFromRight )
- *this += s;
- else
- {
- s += *this;
- *this = s;
- }
+ if ( bFromRight )
+ *this += s;
+ else
+ {
+ s += *this;
+ swap(s);
+ }
- return *this;
+ return *this;
}
// truncate the string
wxString& wxString::Truncate(size_t uiLen)
{
- if ( uiLen < Len() ) {
- CopyBeforeWrite();
-
- *(m_pchData + uiLen) = wxT('\0');
- GetStringData()->nDataLength = uiLen;
- }
- //else: nothing to do, string is already short enough
+ if ( uiLen < length() )
+ {
+ erase(begin() + uiLen, end());
+ }
+ //else: nothing to do, string is already short enough
- return *this;
+ return *this;
}
// ---------------------------------------------------------------------------
// find a character
int wxString::Find(wxChar ch, bool bFromEnd) const
{
- const wxChar *psz = bFromEnd ? wxStrrchr(m_pchData, ch) : wxStrchr(m_pchData, ch);
+ size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
- return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
// find a sub-string (like strstr)
int wxString::Find(const wxChar *pszSub) const
{
- const wxChar *psz = wxStrstr(m_pchData, pszSub);
+ size_type idx = find(pszSub);
- return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
// ----------------------------------------------------------------------------
bool wxString::ToLong(long *val, int base) const
{
- wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+ 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
+ // 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
{
- wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
+ wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToULong") );
wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
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
+ // 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") );
+ 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
+ // 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);
}
int wxString::Printf(const wxChar *pszFormat, ...)
{
- va_list argptr;
- va_start(argptr, pszFormat);
+ va_list argptr;
+ va_start(argptr, pszFormat);
- int iLen = PrintfV(pszFormat, argptr);
+ int iLen = PrintfV(pszFormat, argptr);
- va_end(argptr);
+ va_end(argptr);
- return iLen;
+ return iLen;
}
int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
-#if wxUSE_EXPERIMENTAL_PRINTF
- // the new implementation
-
- // buffer to avoid dynamic memory allocation each time for small strings
- char szScratch[1024];
-
- Reinit();
- for (size_t n = 0; pszFormat[n]; n++)
- if (pszFormat[n] == wxT('%')) {
- static char s_szFlags[256] = "%";
- size_t flagofs = 1;
- bool adj_left = FALSE, in_prec = FALSE,
- prec_dot = FALSE, done = FALSE;
- int ilen = 0;
- size_t min_width = 0, max_width = wxSTRING_MAXLEN;
- do {
-#define CHECK_PREC if (in_prec && !prec_dot) { s_szFlags[flagofs++] = '.'; prec_dot = TRUE; }
- switch (pszFormat[++n]) {
- case wxT('\0'):
- done = TRUE;
- break;
- case wxT('%'):
- *this += wxT('%');
- done = TRUE;
- break;
- case wxT('#'):
- case wxT('0'):
- case wxT(' '):
- case wxT('+'):
- case wxT('\''):
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('-'):
- CHECK_PREC
- adj_left = TRUE;
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('.'):
- CHECK_PREC
- in_prec = TRUE;
- prec_dot = FALSE;
- max_width = 0;
- // dot will be auto-added to s_szFlags if non-negative number follows
- break;
- case wxT('h'):
- ilen = -1;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('l'):
- ilen = 1;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('q'):
- case wxT('L'):
- ilen = 2;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('Z'):
- ilen = 3;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('*'):
- {
- int len = va_arg(argptr, int);
- if (in_prec) {
- if (len<0) break;
- CHECK_PREC
- max_width = len;
- } else {
- if (len<0) {
- adj_left = !adj_left;
- s_szFlags[flagofs++] = '-';
- len = -len;
- }
- min_width = len;
- }
- flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
- }
- break;
- case wxT('1'): case wxT('2'): case wxT('3'):
- case wxT('4'): case wxT('5'): case wxT('6'):
- case wxT('7'): case wxT('8'): case wxT('9'):
- {
- int len = 0;
- CHECK_PREC
- while ((pszFormat[n]>=wxT('0')) && (pszFormat[n]<=wxT('9'))) {
- s_szFlags[flagofs++] = pszFormat[n];
- len = len*10 + (pszFormat[n] - wxT('0'));
- n++;
- }
- if (in_prec) max_width = len;
- else min_width = len;
- n--; // the main loop pre-increments n again
- }
- break;
- case wxT('d'):
- case wxT('i'):
- case wxT('o'):
- case wxT('u'):
- case wxT('x'):
- case wxT('X'):
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- s_szFlags[flagofs] = '\0';
- if (ilen == 0 ) {
- int val = va_arg(argptr, int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == -1) {
- short int val = va_arg(argptr, short int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == 1) {
- long int val = va_arg(argptr, long int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == 2) {
-#if SIZEOF_LONG_LONG
- long long int val = va_arg(argptr, long long int);
- ::sprintf(szScratch, s_szFlags, val);
-#else
- long int val = va_arg(argptr, long int);
- ::sprintf(szScratch, s_szFlags, val);
-#endif
- }
- else if (ilen == 3) {
- size_t val = va_arg(argptr, size_t);
- ::sprintf(szScratch, s_szFlags, val);
- }
- *this += wxString(szScratch);
- done = TRUE;
- break;
- case wxT('e'):
- case wxT('E'):
- case wxT('f'):
- case wxT('g'):
- case wxT('G'):
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- s_szFlags[flagofs] = '\0';
- if (ilen == 2) {
- long double val = va_arg(argptr, long double);
- ::sprintf(szScratch, s_szFlags, val);
- } else {
- double val = va_arg(argptr, double);
- ::sprintf(szScratch, s_szFlags, val);
- }
- *this += wxString(szScratch);
- done = TRUE;
- break;
- case wxT('p'):
- {
- void *val = va_arg(argptr, void *);
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- s_szFlags[flagofs] = '\0';
- ::sprintf(szScratch, s_szFlags, val);
- *this += wxString(szScratch);
- done = TRUE;
- }
- break;
- case wxT('c'):
- {
- wxChar val = va_arg(argptr, int);
- // we don't need to honor padding here, do we?
- *this += val;
- done = TRUE;
- }
- break;
- case wxT('s'):
- if (ilen == -1) {
- // wx extension: we'll let %hs mean non-Unicode strings
- char *val = va_arg(argptr, char *);
-#if wxUSE_UNICODE
- // ASCII->Unicode constructor handles max_width right
- wxString s(val, wxConvLibc, max_width);
-#else
- size_t len = wxSTRING_MAXLEN;
- if (val) {
- for (len = 0; val[len] && (len<max_width); len++);
- } else val = wxT("(null)");
- wxString s(val, len);
-#endif
- if (s.Len() < min_width)
- s.Pad(min_width - s.Len(), wxT(' '), adj_left);
- *this += s;
- } else {
- wxChar *val = va_arg(argptr, wxChar *);
- size_t len = wxSTRING_MAXLEN;
- if (val) {
- for (len = 0; val[len] && (len<max_width); len++);
- } else val = wxT("(null)");
- wxString s(val, len);
- if (s.Len() < min_width)
- s.Pad(min_width - s.Len(), wxT(' '), adj_left);
- *this += s;
- }
- done = TRUE;
- break;
- case wxT('n'):
- if (ilen == 0) {
- int *val = va_arg(argptr, int *);
- *val = Len();
- }
- else if (ilen == -1) {
- short int *val = va_arg(argptr, short int *);
- *val = Len();
- }
- else if (ilen >= 1) {
- long int *val = va_arg(argptr, long int *);
- *val = Len();
- }
- done = TRUE;
- break;
- default:
- if (wxIsalpha(pszFormat[n]))
- // probably some flag not taken care of here yet
- s_szFlags[flagofs++] = pszFormat[n];
- else {
- // bad format
- *this += wxT('%'); // just to pass the glibc tst-printf.c
- n--;
- done = TRUE;
- }
- break;
- }
-#undef CHECK_PREC
- } while (!done);
- } else *this += pszFormat[n];
+ int size = 1024;
-#else
- // buffer to avoid dynamic memory allocation each time for small strings
- char szScratch[1024];
-
- // NB: wxVsnprintf() may return either less than the buffer size or -1 if
- // there is not enough place depending on implementation
- int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), (char *)pszFormat, argptr);
- if ( iLen != -1 ) {
- // the whole string is in szScratch
- *this = szScratch;
- }
- else {
- bool outOfMemory = FALSE;
- int size = 2*WXSIZEOF(szScratch);
- while ( !outOfMemory ) {
- char *buf = GetWriteBuf(size);
- if ( buf )
- iLen = wxVsnprintfA(buf, size, pszFormat, argptr);
- else
- outOfMemory = TRUE;
-
- UngetWriteBuf();
-
- if ( iLen != -1 ) {
- // ok, there was enough space
- break;
- }
+ for ( ;; )
+ {
+ wxStringBuffer tmp(*this, size + 1);
+ wxChar *buf = tmp;
- // still not enough, double it again
- size *= 2;
- }
+ if ( !buf )
+ {
+ // out of memory
+ return -1;
+ }
- if ( outOfMemory ) {
- // out of memory
- return -1;
- }
- }
-#endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
+ // wxVsnprintf() may modify the original arg pointer, so pass it
+ // only a copy
+ va_list argptrcopy;
+ wxVaCopy(argptrcopy, argptr);
+ int len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
+ va_end(argptrcopy);
+
+ // some implementations of vsnprintf() don't NUL terminate
+ // the string if there is not enough space for it so
+ // always do it manually
+ buf[size] = _T('\0');
+
+ // vsnprintf() may return either -1 (traditional Unix behaviour) or the
+ // total number of characters which would have been written if the
+ // buffer were large enough (newer standards such as Unix98)
+ if ( len < 0 )
+ {
+ // still not enough, as we don't know how much we need, double the
+ // current size of the buffer
+ size *= 2;
+ }
+ else if ( len > size )
+ {
+ size = len;
+ }
+ else // ok, there was enough space
+ {
+ break;
+ }
+ }
- return Len();
+ // we could have overshot
+ Shrink();
+
+ return length();
}
// ----------------------------------------------------------------------------
// misc other operations
// ----------------------------------------------------------------------------
-// returns TRUE if the string matches the pattern which may contain '*' and
+// 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
switch ( *pszMask ) {
case wxT('?'):
if ( *pszTxt == wxT('\0') )
- return FALSE;
+ return false;
// pszTxt and pszMask will be incremented in the loop statement
// if there is nothing more, match
if ( *pszMask == wxT('\0') )
- return TRUE;
+ return true;
// are there any other metacharacters in the mask?
size_t uiLenMask;
wxString strToMatch(pszMask, uiLenMask);
const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
if ( pMatch == NULL )
- return FALSE;
+ return false;
// -1 to compensate "++" in the loop
pszTxt = pMatch + uiLenMask - 1;
default:
if ( *pszMask != *pszTxt )
- return FALSE;
+ return false;
break;
}
}
// match only if nothing left
if ( *pszTxt == wxT('\0') )
- return TRUE;
+ return true;
// if we failed to match, backtrack if we can
if ( pszLastStarInText ) {
goto match;
}
- return FALSE;
+ return false;
#endif // wxUSE_REGEX/!wxUSE_REGEX
}
int wxString::Freq(wxChar ch) const
{
int count = 0;
- int len = Len();
+ int len = length();
for (int i = 0; i < len; i++)
{
if (GetChar(i) == ch)
return iLen;
}
-// ---------------------------------------------------------------------------
-// standard C++ library string functions
-// ---------------------------------------------------------------------------
-
-#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() );
-
- 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;
-}
-
-size_t wxString::find(const wxString& str, size_t nStart) const
-{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= Len() );
-
- const wxChar *p = wxStrstr(c_str() + nStart, str);
-
- return p == NULL ? npos : p - c_str();
-}
+// ============================================================================
+// ArrayString
+// ============================================================================
-// VC++ 1.5 can't cope with the default argument in the header.
-#if !defined(__VISUALC__) || defined(__WIN32__)
-size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
-{
- return find(wxString(sz, n), nStart);
-}
-#endif // VC++ 1.5
+#include "wx/arrstr.h"
-// Gives a duplicate symbol (presumably a case-insensitivity problem)
-#if !defined(__BORLANDC__)
-size_t wxString::find(wxChar ch, size_t nStart) const
+wxArrayString::wxArrayString(size_t sz, const wxChar** a)
{
- wxASSERT( nStart <= Len() );
-
- const wxChar *p = wxStrchr(c_str() + nStart, ch);
-
- return p == NULL ? npos : p - c_str();
-}
+#if !wxUSE_STL
+ Init(false);
#endif
-
-size_t wxString::rfind(const wxString& str, size_t nStart) const
-{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart == npos || nStart <= Len() );
-
- // TODO could be made much quicker than that
- const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
- while ( p >= c_str() + str.Len() ) {
- if ( wxStrncmp(p - str.Len(), str, str.Len()) == 0 )
- return p - str.Len() - c_str();
- p--;
- }
-
- return npos;
-}
-
-// VC++ 1.5 can't cope with the default argument in the header.
-#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 ? wxSTRING_MAXLEN : n), nStart);
-}
-
-size_t wxString::rfind(wxChar ch, size_t nStart) const
-{
- if ( nStart == npos )
- {
- nStart = Len();
- }
- else
- {
- wxASSERT( nStart <= Len() );
- }
-
- const wxChar *p = wxStrrchr(c_str(), ch);
-
- 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;
-}
-
-size_t wxString::find_last_not_of(const wxChar* sz, 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 ( !wxStrchr(sz, *p) )
- return p - c_str();
- }
-
- 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)
-{
- wxString strTmp(c_str(), nStart);
- if ( nLen != npos ) {
- wxASSERT( nStart + nLen <= Len() );
-
- strTmp.append(c_str() + nStart + nLen);
- }
-
- *this = strTmp;
- return *this;
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *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 << c_str() + nStart + nLen;
-
- *this = strTmp;
- return *this;
-}
-
-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 wxString& str, size_t nStart2, size_t nLen2)
-{
- return replace(nStart, nLen, str.substr(nStart2, nLen2));
+ for (size_t i=0; i < sz; i++)
+ Add(a[i]);
}
-wxString& wxString::replace(size_t nStart, size_t nLen,
- const wxChar* sz, size_t nCount)
+wxArrayString::wxArrayString(size_t sz, const wxString* a)
{
- return replace(nStart, nLen, wxString(sz, nCount));
+#if !wxUSE_STL
+ Init(false);
+#endif
+ for (size_t i=0; i < sz; i++)
+ Add(a[i]);
}
-#endif //std::string compatibility
-
-// ============================================================================
-// ArrayString
-// ============================================================================
+#if !wxUSE_STL
// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
#define ARRAY_MAXSIZE_INCREMENT 4096
void wxArrayString::Grow(size_t nIncrement)
{
// only do it if no more place
- if ( m_nCount == m_nSize ) {
+ 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
if ( m_nSize == 0 ) {
// was empty, alloc some memory
m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
+ if (m_nSize < nIncrement)
+ m_nSize = nIncrement;
m_pItems = new wxChar *[m_nSize];
}
else {
wxDELETEA(m_pItems);
}
+void wxArrayString::reserve(size_t nSize)
+{
+ Alloc(nSize);
+}
+
// pre-allocates memory (frees the previous data!)
void wxArrayString::Alloc(size_t nSize)
{
}
}
+#if WXWIN_COMPATIBILITY_2_4
+
// return a wxString[] as required for some control ctors.
wxString* wxArrayString::GetStringArray() const
{
return array;
}
+void wxArrayString::Remove(size_t nIndex, size_t nRemove)
+{
+ RemoveAt(nIndex, nRemove);
+}
+
+#endif // WXWIN_COMPATIBILITY_2_4
+
// searches the array for an item (forward or backwards)
int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
{
while ( lo < hi ) {
i = (lo + hi)/2;
- res = wxStrcmp(str, m_pItems[i]);
+ res = str.Cmp(m_pItems[i]);
if ( res < 0 )
hi = i;
else if ( res > 0 )
Grow(nInsert);
for (size_t i = 0; i < nInsert; i++)
- {
+ {
// the string data must not be deleted!
str.GetStringData()->Lock();
m_nCount += nInsert;
}
+// range insert (STL 23.2.4.3)
+void
+wxArrayString::insert(iterator it, const_iterator first, const_iterator last)
+{
+ const int idx = it - begin();
+
+ // grow it once
+ Grow(last - first);
+
+ // reset "it" since it can change inside Grow()
+ it = begin() + idx;
+
+ while ( first != last )
+ {
+ it = insert(it, *first);
+
+ // insert returns an iterator to the last element inserted but we need
+ // insert the next after this one, that is before the next one
+ ++it;
+
+ ++first;
+ }
+}
+
// expand the array
void wxArrayString::SetCount(size_t count)
{
}
// removes item from array (by index)
-void wxArrayString::Remove(size_t nIndex, size_t nRemove)
+void wxArrayString::RemoveAt(size_t nIndex, size_t nRemove)
{
wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArrayString::Remove") );
wxCHECK_RET( nIndex + nRemove <= m_nCount,
wxCHECK_RET( iIndex != wxNOT_FOUND,
wxT("removing inexistent element in wxArrayString::Remove") );
- Remove(iIndex);
+ RemoveAt(iIndex);
+}
+
+void wxArrayString::assign(const_iterator first, const_iterator last)
+{
+ reserve(last - first);
+ for(; first != last; ++first)
+ push_back(*first);
}
// ----------------------------------------------------------------------------
#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()
+ static wxCriticalSection gs_critsectStringSort;
#endif // wxUSE_THREADS
// function to use for string comparaison
// 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;
+static bool gs_sortAscending = true;
// function which is called by quick sort
-extern "C" int LINKAGEMODE
+extern "C" int wxC_CALLING_CONV // LINKAGEMODE
wxStringCompareFunction(const void *first, const void *second)
{
wxString *strFirst = (wxString *)first;
}
else {
// maybe we should use wxStrcoll
- int result = wxStrcmp(strFirst->c_str(), strSecond->c_str());
+ int result = strFirst->Cmp(*strSecond);
return gs_sortAscending ? result : -result;
}
// sort array elements using passed comparaison function
void wxArrayString::Sort(CompareFunction compareFunction)
{
- START_SORT();
+ wxCRIT_SECT_LOCKER(lockCmpFunc, gs_critsectStringSort);
wxASSERT( !gs_compareFunction ); // must have been reset to NULL
gs_compareFunction = compareFunction;
// reset it to NULL so that Sort(bool) will work the next time
gs_compareFunction = NULL;
-
- END_SORT();
}
-void wxArrayString::Sort(bool reverseOrder)
+extern "C"
{
- START_SORT();
-
- wxASSERT( !gs_compareFunction ); // must have been reset to NULL
- gs_sortAscending = !reverseOrder;
+ typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first,
+ const void *second);
+}
- DoSort();
+void wxArrayString::Sort(CompareFunction2 compareFunction)
+{
+ qsort(m_pItems, m_nCount, sizeof(wxChar *), (wxStringCompareFn)compareFunction);
+}
- END_SORT();
+void wxArrayString::Sort(bool reverseOrder)
+{
+ Sort(reverseOrder ? wxStringSortDescending : wxStringSortAscending);
}
void wxArrayString::DoSort()
bool wxArrayString::operator==(const wxArrayString& a) const
{
if ( m_nCount != a.m_nCount )
- return FALSE;
+ return false;
for ( size_t n = 0; n < m_nCount; n++ )
{
if ( Item(n) != a[n] )
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
+}
+
+#endif // !wxUSE_STL
+
+int wxCMPFUNC_CONV wxStringSortAscending(wxString* s1, wxString* s2)
+{
+ return s1->Cmp(*s2);
}
+int wxCMPFUNC_CONV wxStringSortDescending(wxString* s1, wxString* s2)
+{
+ return -s1->Cmp(*s2);
+}
projects / wxWidgets.git / blobdiff