/////////////////////////////////////////////////////////////////////////////
-// Name: string.cpp
+// Name: src/common/string.cpp
// Purpose: wxString class
// Author: Vadim Zeitlin, Ryan Norton
// Modified by:
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #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"
#endif
#include <ctype.h>
+
+#ifndef __WXWINCE__
+ #include <errno.h>
+#endif
+
#include <string.h>
#include <stdlib.h>
#ifdef __SALFORDC__
- #include <clib.h>
+ #include <clib.h>
+#endif
+
+
+// string handling functions used by wxString:
+#if wxUSE_UNICODE_UTF8
+ #define wxStringMemcpy memcpy
+ #define wxStringMemcmp memcmp
+ #define wxStringMemchr memchr
+ #define wxStringStrlen strlen
+#else
+ #define wxStringMemcpy wxTmemcpy
+ #define wxStringMemcmp wxTmemcmp
+ #define wxStringMemchr wxTmemchr
+ #define wxStringStrlen wxStrlen
#endif
-// allocating extra space for each string consumes more memory but speeds up
-// the concatenation operations (nLen is the current string's length)
-// NB: EXTRA_ALLOC must be >= 0!
-#define EXTRA_ALLOC (19 - nLen % 16)
// ---------------------------------------------------------------------------
// static class variables definition
// ---------------------------------------------------------------------------
-#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)
-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 wxChar WXDLLIMPEXP_BASE *wxEmptyString = &g_strEmpty.dummy;
-
-#endif
+//According to STL _must_ be a -1 size_t
+const size_t wxString::npos = (size_t) -1;
// ----------------------------------------------------------------------------
// global functions
#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
- int w = is.width(0);
- if ( is.ipfx(0) ) {
- streambuf *sb = is.rdbuf();
- str.erase();
- while ( true ) {
- int ch = sb->sbumpc ();
- if ( ch == EOF ) {
- is.setstate(ios::eofbit);
- break;
- }
- else if ( isspace(ch) ) {
- sb->sungetc();
- break;
- }
-
- str += ch;
- if ( --w == 1 )
- break;
- }
- }
-
- is.isfx();
- if ( str.length() == 0 )
- is.setstate(ios::failbit);
-#endif
- return is;
-}
-
wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
{
- os << str.c_str();
- return os;
+ return os << str.c_str();
}
-#endif // wxUSE_STD_IOSTREAM
-
-// ----------------------------------------------------------------------------
-// private classes
-// ----------------------------------------------------------------------------
-
-// this small class is used to gather statistics for performance tuning
-//#define WXSTRING_STATISTICS
-#ifdef WXSTRING_STATISTICS
- class Averager
- {
- public:
- 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(size_t n) { m_nTotal += n; m_nCount++; }
-
- private:
- size_t m_nCount, m_nTotal;
- const wxChar *m_sz;
- } g_averageLength("allocation size"),
- g_averageSummandLength("summand length"),
- g_averageConcatHit("hit probability in concat"),
- g_averageInitialLength("initial string length");
-
- #define STATISTICS_ADD(av, val) g_average##av.Add(val)
-#else
- #define STATISTICS_ADD(av, val)
-#endif // WXSTRING_STATISTICS
-
-#if !wxUSE_STL
-
-// ===========================================================================
-// wxStringData class deallocation
-// ===========================================================================
-
-#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()
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
{
- free(this);
-}
+#if wxUSE_UNICODE && !defined(__BORLANDC__)
+ return os << str.AsWChar();
+#else
+ return os << str.AsChar();
#endif
-
-// ===========================================================================
-// wxStringBase
-// ===========================================================================
-
-// takes nLength elements of psz starting at nPos
-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 == npos ) {
- wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
-
- nLength = wxStrlen(psz + nPos);
- }
-
- STATISTICS_ADD(InitialLength, nLength);
-
- if ( nLength > 0 ) {
- // trailing '\0' is written in AllocBuffer()
- if ( !AllocBuffer(nLength) ) {
- wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") );
- return;
- }
- wxTmemcpy(m_pchData, psz + nPos, nLength);
- }
}
-// poor man's iterators are "void *" pointers
-wxStringBase::wxStringBase(const void *pStart, const void *pEnd)
-{
- InitWith((const wxChar *)pStart, 0,
- (const wxChar *)pEnd - (const wxChar *)pStart);
-}
+#endif // wxUSE_STD_IOSTREAM
-wxStringBase::wxStringBase(size_type n, wxChar ch)
-{
- Init();
- append(n, ch);
-}
+// ===========================================================================
+// wxString class core
+// ===========================================================================
// ---------------------------------------------------------------------------
-// memory allocation
+// construction and conversion
// ---------------------------------------------------------------------------
-// allocates memory needed to store a C string of length nLen
-bool wxStringBase::AllocBuffer(size_t nLen)
+#if wxUSE_UNICODE
+/* static */
+wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
+ const wxMBConv& conv)
{
- // 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);
+ // anything to do?
+ if ( !psz || nLength == 0 )
+ return SubstrBufFromMB();
- // allocate memory:
- // 1) one extra character for '\0' termination
- // 2) sizeof(wxStringData) for housekeeping info
- wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(wxChar));
+ if ( nLength == npos )
+ nLength = wxNO_LEN;
- 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;
+ size_t wcLen;
+ wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+ if ( !wcLen )
+ return SubstrBufFromMB();
+ else
+ return SubstrBufFromMB(wcBuf, wcLen);
}
-
-// must be called before changing this string
-bool wxStringBase::CopyBeforeWrite()
+#else
+/* static */
+wxString::SubstrBufFromWC wxString::ConvertStr(const wchar_t *pwz, size_t nLength,
+ const wxMBConv& conv)
{
- wxStringData* pData = GetStringData();
-
- if ( pData->IsShared() ) {
- pData->Unlock(); // memory not freed because shared
- size_t nLen = pData->nDataLength;
- if ( !AllocBuffer(nLen) ) {
- // allocation failures are handled by the caller
- return false;
- }
- wxTmemcpy(m_pchData, pData->data(), nLen);
- }
+ // anything to do?
+ if ( !pwz || nLength == 0 )
+ return SubstrBufFromWC();
- wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+ if ( nLength == npos )
+ nLength = wxNO_LEN;
- return true;
+ size_t mbLen;
+ wxCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
+ if ( !mbLen )
+ return SubstrBufFromWC();
+ else
+ return SubstrBufFromWC(mbBuf, mbLen);
}
+#endif
-// must be called before replacing contents of this string
-bool wxStringBase::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() || pData->IsEmpty() ) {
- // can't work with old buffer, get new one
- pData->Unlock();
- 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);
+#if wxUSE_UNICODE
- nLen += EXTRA_ALLOC;
+// from multibyte string
+wxString::wxString(const char *psz, const wxMBConv& conv, size_t nLength)
+{
+ // FIXME-UTF8: this will need changes
- pData = (wxStringData*)
- realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ // anything to do?
+ if ( psz && nLength != 0 )
+ {
+ if ( nLength == npos )
+ {
+ nLength = wxNO_LEN;
+ }
- if ( pData == NULL ) {
- // allocation failures are handled by the caller
- // keep previous data since reallocation failed
- return false;
- }
+ size_t nLenWide;
+ wxWCharBuffer wbuf = conv.cMB2WC(psz, nLength, &nLenWide);
- pData->nAllocLength = nLen;
- m_pchData = pData->data();
+ if ( nLenWide )
+ assign(wbuf, nLenWide);
}
-
- // now we have enough space, just update the string length
- pData->nDataLength = nLen;
- }
-
- wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
-
- return true;
}
-wxStringBase& wxStringBase::append(size_t n, wxChar ch)
+wxString::wxString(const char *psz, size_t nLength)
{
- 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;
+ assign(psz, nLength);
}
-void wxStringBase::resize(size_t nSize, wxChar ch)
+//Convert wxString in Unicode mode to a multi-byte string
+const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
{
- 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
+ return conv.cWC2MB(c_str(), length() + 1 /* size, not length */, NULL);
}
-// allocate enough memory for nLen characters
-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));
+#else // ANSI
- if ( pData == NULL ) {
- // allocation failure handled by caller
- return false;
- }
+#if wxUSE_WCHAR_T
- pData->nRefs = 1;
- pData->nDataLength = 0;
- pData->nAllocLength = nLen;
- m_pchData = pData->data(); // data starts after wxStringData
- m_pchData[0u] = wxT('\0');
- }
- else if ( pData->IsShared() ) {
- pData->Unlock(); // memory not freed because shared
- 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;
+// from wide string
+wxString::wxString(const wchar_t *pwz, const wxMBConv& conv, size_t nLength)
+{
+ // FIXME-UTF8: this will need changes
- pData = (wxStringData *)
- realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ // anything to do?
+ if ( pwz && nLength != 0 )
+ {
+ if ( nLength == npos )
+ {
+ nLength = wxNO_LEN;
+ }
- if ( pData == NULL ) {
- // allocation failure handled by caller
- // keep previous data since reallocation failed
- return false;
- }
+ size_t nLenMB;
+ wxCharBuffer buf = conv.cWC2MB(pwz, nLength, &nLenMB);
- // 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)
- pData->nAllocLength = nLen;
- m_pchData = pData->data();
+ if ( nLenMB )
+ assign(buf, nLenMB);
}
- }
- //else: we've already got enough
- return true;
-}
-wxStringBase::iterator wxStringBase::begin()
-{
- if (length() > 0)
- CopyBeforeWrite();
- return m_pchData;
}
-wxStringBase::iterator wxStringBase::end()
+wxString::wxString(const wchar_t *pwz, size_t nLength)
{
- if (length() > 0)
- CopyBeforeWrite();
- return m_pchData + length();
+ assign(pwz, nLength);
}
-wxStringBase::iterator wxStringBase::erase(iterator it)
+//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
{
- size_type idx = it - begin();
- erase(idx, 1);
- return begin() + idx;
+ return conv.cMB2WC(c_str(), length() + 1 /* size, not length */, NULL);
}
-wxStringBase& wxStringBase::erase(size_t nStart, size_t nLen)
-{
- 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);
+#endif // wxUSE_WCHAR_T
- swap(strTmp);
- return *this;
-}
+#endif // Unicode/ANSI
-wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
+// shrink to minimal size (releasing extra memory)
+bool wxString::Shrink()
{
- wxASSERT( nPos <= length() );
-
- if ( n == npos ) n = wxStrlen(sz);
- if ( n == 0 ) return *this;
-
- if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
- wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
- }
-
- 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;
+ wxString tmp(begin(), end());
+ swap(tmp);
+ return tmp.length() == length();
}
-void wxStringBase::swap(wxStringBase& str)
+// deprecated compatibility code:
+#if WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
+wxChar *wxString::GetWriteBuf(size_t nLen)
{
- wxChar* tmp = str.m_pchData;
- str.m_pchData = m_pchData;
- m_pchData = tmp;
+ return DoGetWriteBuf(nLen);
}
-size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
+void wxString::UngetWriteBuf()
{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= length() );
-
- //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 (p - c_str() + str.length() <= length()) ? p - c_str() : npos;
+ DoUngetWriteBuf();
}
-size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
+void wxString::UngetWriteBuf(size_t nLen)
{
- return find(wxStringBase(sz, n), nStart);
+ DoUngetWriteBuf(nLen);
}
+#endif // WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
-size_t wxStringBase::find(wxChar ch, size_t nStart) const
-{
- wxASSERT( nStart <= length() );
-
- const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
- return p == NULL ? npos : p - c_str();
-}
-
-size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
-{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart == npos || nStart <= length() );
-
- if ( length() >= str.length() )
- {
- // avoids a corner case later
- if ( length() == 0 && str.length() == 0 )
- return 0;
-
- // "top" is the point where search starts from
- size_t top = length() - str.length();
+// ---------------------------------------------------------------------------
+// data access
+// ---------------------------------------------------------------------------
- if ( nStart == npos )
- nStart = length() - 1;
- if ( nStart < top )
- top = nStart;
+// all functions are inline in string.h
- const wxChar *cursor = c_str() + top;
- do
- {
- if ( wxTmemcmp(cursor, str.c_str(),
- str.length()) == 0 )
- {
- return cursor - c_str();
- }
- } while ( cursor-- > c_str() );
- }
+// ---------------------------------------------------------------------------
+// assignment operators
+// ---------------------------------------------------------------------------
- return npos;
-}
+#if !wxUSE_UNICODE
-size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const
+// same as 'signed char' variant
+wxString& wxString::operator=(const unsigned char* psz)
{
- return rfind(wxStringBase(sz, n), nStart);
+ *this = (const char *)psz;
+ return *this;
}
-size_t wxStringBase::rfind(wxChar ch, size_t nStart) const
+#if wxUSE_WCHAR_T
+wxString& wxString::operator=(const wchar_t *pwz)
{
- if ( nStart == npos )
- {
- nStart = length();
- }
- else
- {
- wxASSERT( nStart <= length() );
- }
-
- 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();
- }
-
- return npos;
+ wxString str(pwz);
+ swap(str);
+ return *this;
}
+#endif
-size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const
-{
- 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;
-}
+#endif
-size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
- size_t n) const
-{
- return find_first_of(wxStringBase(sz, n), nStart);
-}
+/*
+ * concatenation functions come in 5 flavours:
+ * string + string
+ * char + string and string + char
+ * C str + string and string + C str
+ */
-size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const
+wxString operator+(const wxString& str1, const wxString& str2)
{
- 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();
- }
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str1.IsValid() );
+ wxASSERT( str2.IsValid() );
+#endif
- return npos;
-}
+ wxString s = str1;
+ s += str2;
-size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
- size_t n) const
-{
- return find_last_of(wxStringBase(sz, n), nStart);
+ return s;
}
-size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const
+wxString operator+(const wxString& str, wxUniChar ch)
{
- 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 !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- if(i == this->length())
- return npos;
- else
- return i;
-}
+ wxString s = str;
+ s += ch;
-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);
+ return s;
}
-size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const
+wxString operator+(wxUniChar ch, const wxString& str)
{
- wxASSERT( nStart <= length() );
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- for ( const wxChar *p = c_str() + nStart; *p; p++ )
- {
- if ( *p != ch )
- return p - c_str();
- }
+ wxString s = ch;
+ s += str;
- return npos;
+ return s;
}
-size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+wxString operator+(const wxString& str, const char *psz)
{
- if ( nStart == npos )
- {
- nStart = length() - 1;
- }
- else
- {
- wxASSERT( nStart <= length() );
- }
-
- size_t len = wxStrlen(sz);
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
- {
- if ( !wxTmemchr(sz, *p,len) )
- return p - c_str();
+ wxString s;
+ if ( !s.Alloc(strlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
}
+ s += str;
+ s += psz;
- 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);
+ return s;
}
-size_t wxStringBase::find_last_not_of(wxChar ch, size_t nStart) const
+wxString operator+(const wxString& str, const wchar_t *pwz)
{
- if ( nStart == npos )
- {
- nStart = length() - 1;
- }
- else
- {
- wxASSERT( nStart <= length() );
- }
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
- {
- if ( *p != ch )
- return p - c_str();
+ wxString s;
+ if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
}
+ s += str;
+ s += pwz;
- 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
-
- if ( nStart != 0 )
- strTmp.append(c_str(), nStart);
- strTmp.append(sz);
- strTmp.append(c_str() + nStart + nLen);
-
- 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());
+ return s;
}
-wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
- const wxStringBase& str,
- size_t nStart2, size_t nLen2)
+wxString operator+(const char *psz, const wxString& str)
{
- return replace(nStart, nLen, str.substr(nStart2, nLen2));
-}
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
-wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
- const wxChar* sz, size_t nCount)
-{
- return replace(nStart, nLen, wxStringBase(sz, nCount).c_str());
-}
+ wxString s;
+ if ( !s.Alloc(strlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s = psz;
+ s += str;
-wxStringBase wxStringBase::substr(size_t nStart, size_t nLen) const
-{
- if ( nLen == npos )
- nLen = length() - nStart;
- return wxStringBase(*this, nStart, nLen);
+ return s;
}
-// assigns one string to another
-wxStringBase& wxStringBase::operator=(const wxStringBase& stringSrc)
+wxString operator+(const wchar_t *pwz, const wxString& str)
{
- wxASSERT( stringSrc.GetStringData()->IsValid() );
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- // 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();
+ wxString s;
+ if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
}
- }
+ s = pwz;
+ s += str;
- return *this;
+ return s;
}
-// 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;
-}
+// ---------------------------------------------------------------------------
+// string comparison
+// ---------------------------------------------------------------------------
-// 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;
-}
+#ifdef HAVE_STD_STRING_COMPARE
-// helper function: does real copy
-bool wxStringBase::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+// NB: Comparison code (both if HAVE_STD_STRING_COMPARE and if not) works with
+// UTF-8 encoded strings too, thanks to UTF-8's design which allows us to
+// sort strings in characters code point order by sorting the byte sequence
+// in byte values order (i.e. what strcmp() and memcmp() do).
+
+int wxString::compare(const wxString& str) const
{
- 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;
+ return m_impl.compare(str.m_impl);
}
-// ---------------------------------------------------------------------------
-// string concatenation
-// ---------------------------------------------------------------------------
-
-// add something to this string
-bool wxStringBase::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData,
- size_t nMaxLen)
+int wxString::compare(size_t nStart, size_t nLen,
+ const wxString& str) const
{
- STATISTICS_ADD(SummandLength, nSrcLen);
-
- nSrcLen = nSrcLen < nMaxLen ? nSrcLen : nMaxLen;
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
+ return m_impl.compare(pos, len, str.m_impl);
+}
- // concatenating an empty string is a NOP
- if ( nSrcLen > 0 ) {
- wxStringData *pData = GetStringData();
- size_t nLen = pData->nDataLength;
- size_t nNewLen = nLen + nSrcLen;
+int wxString::compare(size_t nStart, size_t nLen,
+ const wxString& str,
+ size_t nStart2, size_t nLen2) const
+{
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
- // alloc new buffer if current is too small
- if ( pData->IsShared() ) {
- STATISTICS_ADD(ConcatHit, 0);
+ size_t pos2, len2;
+ str.PosLenToImpl(nStart2, nLen2, &pos2, &len2);
- // 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);
+ return m_impl.compare(pos, len, str.m_impl, pos2, len2);
+}
- reserve(nNewLen);
- // we have to grow the buffer
- if ( capacity() < nNewLen ) {
- // allocation failure handled by caller
- return false;
- }
- }
- else {
- STATISTICS_ADD(ConcatHit, 1);
+int wxString::compare(const char* sz) const
+{
+ return m_impl.compare(ImplStr(sz));
+}
- // the buffer is already big enough
- }
+int wxString::compare(const wchar_t* sz) const
+{
+ return m_impl.compare(ImplStr(sz));
+}
- // should be enough space
- wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+int wxString::compare(size_t nStart, size_t nLen,
+ const char* sz, size_t nCount) const
+{
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
- // fast concatenation - all is done in our buffer
- memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
+ SubstrBufFromMB str(ImplStr(sz, nCount));
- m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
- GetStringData()->nDataLength = nNewLen; // and fix the length
- }
- //else: the string to append was empty
- return true;
+ return m_impl.compare(pos, len, str.data, str.len);
}
-// ---------------------------------------------------------------------------
-// simple sub-string extraction
-// ---------------------------------------------------------------------------
-
-// helper function: clone the data attached to this string
-bool wxStringBase::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+int wxString::compare(size_t nStart, size_t nLen,
+ const wchar_t* sz, size_t nCount) 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;
-}
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
-#endif // !wxUSE_STL
+ SubstrBufFromWC str(ImplStr(sz, nCount));
-#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+ return m_impl.compare(pos, len, str.data, str.len);
+}
-#if !wxUSE_STL
- #define STRINGCLASS wxStringBase
-#else
- #define STRINGCLASS wxString
-#endif
+#else // !HAVE_STD_STRING_COMPARE
-static inline int wxDoCmp(const wxChar* s1, size_t l1,
- const wxChar* s2, size_t l2)
+static inline int wxDoCmp(const wxStringCharType* s1, size_t l1,
+ const wxStringCharType* s2, size_t l2)
{
if( l1 == l2 )
- return wxTmemcmp(s1, s2, l1);
+ return wxStringMemcmp(s1, s2, l1);
else if( l1 < l2 )
{
- int ret = wxTmemcmp(s1, s2, l1);
+ int ret = wxStringMemcmp(s1, s2, l1);
return ret == 0 ? -1 : ret;
}
else
{
- int ret = wxTmemcmp(s1, s2, l2);
+ int ret = wxStringMemcmp(s1, s2, l2);
return ret == 0 ? +1 : ret;
}
}
-int STRINGCLASS::compare(const wxStringBase& str) const
+int wxString::compare(const wxString& str) const
{
- return ::wxDoCmp(data(), length(), str.data(), str.length());
+ return ::wxDoCmp(m_impl.data(), m_impl.length(),
+ str.m_impl.data(), str.m_impl.length());
}
-int STRINGCLASS::compare(size_t nStart, size_t nLen,
- const wxStringBase& str) const
+int wxString::compare(size_t nStart, size_t nLen,
+ const wxString& str) const
{
wxASSERT(nStart <= length());
size_type strLen = length() - nStart;
nLen = strLen < nLen ? strLen : nLen;
- return ::wxDoCmp(data() + nStart, nLen, str.data(), str.length());
+
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
+
+ return ::wxDoCmp(m_impl.data() + pos, len,
+ str.m_impl.data(), str.m_impl.length());
}
-int STRINGCLASS::compare(size_t nStart, size_t nLen,
- const wxStringBase& str,
- size_t nStart2, size_t nLen2) const
+int wxString::compare(size_t nStart, size_t nLen,
+ const wxString& str,
+ size_t nStart2, size_t nLen2) const
{
wxASSERT(nStart <= length());
wxASSERT(nStart2 <= str.length());
strLen2 = str.length() - nStart2;
nLen = strLen < nLen ? strLen : nLen;
nLen2 = strLen2 < nLen2 ? strLen2 : nLen2;
- return ::wxDoCmp(data() + nStart, nLen, str.data() + nStart2, nLen2);
+
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
+ size_t pos2, len2;
+ str.PosLenToImpl(nStart2, nLen2, &pos2, &len2);
+
+ return ::wxDoCmp(m_impl.data() + pos, len,
+ str.m_impl.data() + pos2, len2);
+}
+
+int wxString::compare(const char* sz) const
+{
+ SubstrBufFromMB str(ImplStr(sz, npos));
+ if ( str.len == npos )
+ str.len = wxStringStrlen(str.data);
+ return ::wxDoCmp(m_impl.data(), m_impl.length(), str.data, str.len);
}
-int STRINGCLASS::compare(const wxChar* sz) const
+int wxString::compare(const wchar_t* sz) const
{
- size_t nLen = wxStrlen(sz);
- return ::wxDoCmp(data(), length(), sz, nLen);
+ SubstrBufFromWC str(ImplStr(sz, npos));
+ if ( str.len == npos )
+ str.len = wxStringStrlen(str.data);
+ return ::wxDoCmp(m_impl.data(), m_impl.length(), str.data, str.len);
}
-int STRINGCLASS::compare(size_t nStart, size_t nLen,
- const wxChar* sz, size_t nCount) const
+int wxString::compare(size_t nStart, size_t nLen,
+ const char* 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);
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
+
+ SubstrBufFromMB str(ImplStr(sz, nCount));
+ if ( str.len == npos )
+ str.len = wxStringStrlen(str.data);
+
+ return ::wxDoCmp(m_impl.data() + pos, len, str.data, str.len);
}
-#undef STRINGCLASS
+int wxString::compare(size_t nStart, size_t nLen,
+ const wchar_t* sz, size_t nCount) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
-#endif // !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
-// ===========================================================================
-// wxString class core
-// ===========================================================================
+ SubstrBufFromWC str(ImplStr(sz, nCount));
+ if ( str.len == npos )
+ str.len = wxStringStrlen(str.data);
-// ---------------------------------------------------------------------------
-// construction and conversion
-// ---------------------------------------------------------------------------
+ return ::wxDoCmp(m_impl.data() + pos, len, str.data, str.len);
+}
-#if wxUSE_UNICODE
+#endif // HAVE_STD_STRING_COMPARE/!HAVE_STD_STRING_COMPARE
-// from multibyte string
-wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
-{
- // if nLength != npos, then we have to make a NULL-terminated copy
- // of first nLength bytes of psz first because the input buffer to MB2WC
- // must always be NULL-terminated:
- wxCharBuffer inBuf((const char *)NULL);
- if (nLength != npos)
- {
- wxASSERT( psz != NULL );
- wxCharBuffer tmp(nLength);
- memcpy(tmp.data(), psz, nLength);
- tmp.data()[nLength] = '\0';
- inBuf = tmp;
- psz = inBuf.data();
- }
- // first get the size of the buffer we need
- size_t nLen;
- if ( psz )
- {
- // calculate the needed size ourselves or use the provided one
- if (nLength == npos)
- nLen = strlen(psz);
- else
- nLen = nLength;
- }
- else
- {
- // nothing to convert
- nLen = 0;
- }
+// ---------------------------------------------------------------------------
+// find_{first,last}_[not]_of functions
+// ---------------------------------------------------------------------------
+#if !wxUSE_STL_BASED_WXSTRING || wxUSE_UNICODE_UTF8
- // anything to do?
- if ( (nLen != 0) && (nLen != (size_t)-1) )
- {
- //Convert string
- size_t nRealSize;
- wxWCharBuffer theBuffer = conv.cMB2WC(psz, nLen, &nRealSize);
+// NB: All these functions are implemented with the argument being wxChar*,
+// i.e. widechar string in any Unicode build, even though native string
+// representation is char* in the UTF-8 build. This is because we couldn't
+// use memchr() to determine if a character is in a set encoded as UTF-8.
- //Copy
- if (nRealSize)
- assign( theBuffer.data() , nRealSize - 1 );
- }
+size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
+{
+ return find_first_of(sz, nStart, wxStrlen(sz));
}
-//Convert wxString in Unicode mode to a multi-byte string
-const wxCharBuffer wxString::mb_str(wxMBConv& conv) const
+size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
{
- size_t dwOutSize;
- return conv.cWC2MB(c_str(), length(), &dwOutSize);
+ return find_first_not_of(sz, nStart, wxStrlen(sz));
}
-#else // ANSI
-
-#if wxUSE_WCHAR_T
-// from wide string
-wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
+size_t wxString::find_first_of(const wxChar* sz, size_t nStart, size_t n) const
{
- // if nLength != npos, then we have to make a NULL-terminated copy
- // of first nLength chars of psz first because the input buffer to WC2MB
- // must always be NULL-terminated:
- wxWCharBuffer inBuf((const wchar_t *)NULL);
- if (nLength != npos)
- {
- wxASSERT( pwz != NULL );
- wxWCharBuffer tmp(nLength);
- memcpy(tmp.data(), pwz, nLength * sizeof(wchar_t));
- tmp.data()[nLength] = '\0';
- inBuf = tmp;
- pwz = inBuf.data();
- }
+ wxASSERT_MSG( nStart <= length(), _T("invalid index") );
- // first get the size of the buffer we need
- size_t nLen;
- if ( pwz )
- {
- // calculate the needed size ourselves or use the provided one
- if (nLength == npos)
- nLen = wxWcslen(pwz);
- else
- nLen = nLength;
- }
- else
+ size_t idx = nStart;
+ for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
{
- // nothing to convert
- nLen = 0;
+ if ( wxTmemchr(sz, *i, n) )
+ return idx;
}
- // anything to do?
- if ( (nLen != 0) && (nLen != (size_t)-1) )
- {
- //Convert string
- size_t nRealSize;
- wxCharBuffer theBuffer = conv.cWC2MB(pwz, nLen, &nRealSize);
-
- //Copy
- if (nRealSize)
- assign( theBuffer.data() , nRealSize - 1 );
- }
+ return npos;
}
-//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(wxMBConv& conv) const
+size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart, size_t n) const
{
- size_t dwOutSize;
- return conv.cMB2WC(c_str(), length(), &dwOutSize);
-}
-
-#endif // wxUSE_WCHAR_T
+ wxASSERT_MSG( nStart <= length(), _T("invalid index") );
-#endif // Unicode/ANSI
+ size_t idx = nStart;
+ for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
+ {
+ if ( !wxTmemchr(sz, *i, n) )
+ return idx;
+ }
-// shrink to minimal size (releasing extra memory)
-bool wxString::Shrink()
-{
- wxString tmp(begin(), end());
- swap(tmp);
- return tmp.length() == length();
+ return npos;
}
-#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()
+size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
{
- GetStringData()->nDataLength = wxStrlen(m_pchData);
- GetStringData()->Validate(true);
+ return find_last_of(sz, nStart, wxStrlen(sz));
}
-void wxString::UngetWriteBuf(size_t nLen)
+size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
{
- GetStringData()->nDataLength = nLen;
- GetStringData()->Validate(true);
+ return find_last_not_of(sz, nStart, wxStrlen(sz));
}
-#endif
-
-// ---------------------------------------------------------------------------
-// data access
-// ---------------------------------------------------------------------------
-// all functions are inline in string.h
+size_t wxString::find_last_of(const wxChar* sz, size_t nStart, size_t n) const
+{
+ size_t len = length();
-// ---------------------------------------------------------------------------
-// assignment operators
-// ---------------------------------------------------------------------------
+ if ( nStart == npos )
+ {
+ nStart = len - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ }
-#if !wxUSE_UNICODE
+ size_t idx = nStart;
+ for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
+ i != rend(); --idx, ++i )
+ {
+ if ( wxTmemchr(sz, *i, n) )
+ return idx;
+ }
-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
-{
- *this = (const char *)psz;
- return *this;
+ return npos;
}
-#if wxUSE_WCHAR_T
-wxString& wxString::operator=(const wchar_t *pwz)
+size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart, size_t n) const
{
- wxString str(pwz);
- swap(str);
- return *this;
-}
-#endif
-
-#endif
-
-/*
- * concatenation functions come in 5 flavours:
- * string + string
- * char + string and string + char
- * C str + string and string + C str
- */
+ size_t len = length();
-wxString operator+(const wxString& str1, const wxString& str2)
-{
-#if !wxUSE_STL
- wxASSERT( str1.GetStringData()->IsValid() );
- wxASSERT( str2.GetStringData()->IsValid() );
-#endif
+ if ( nStart == npos )
+ {
+ nStart = len - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ }
- wxString s = str1;
- s += str2;
+ size_t idx = nStart;
+ for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
+ i != rend(); --idx, ++i )
+ {
+ if ( !wxTmemchr(sz, *i, n) )
+ return idx;
+ }
- return s;
+ return npos;
}
-wxString operator+(const wxString& str, wxChar ch)
+size_t wxString::find_first_not_of(wxUniChar ch, size_t nStart) const
{
-#if !wxUSE_STL
- wxASSERT( str.GetStringData()->IsValid() );
-#endif
+ wxASSERT_MSG( nStart <= length(), _T("invalid index") );
- wxString s = str;
- s += ch;
+ size_t idx = nStart;
+ for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
+ {
+ if ( *i != ch )
+ return idx;
+ }
- return s;
+ return npos;
}
-wxString operator+(wxChar ch, const wxString& str)
+size_t wxString::find_last_not_of(wxUniChar ch, size_t nStart) const
{
-#if !wxUSE_STL
- wxASSERT( str.GetStringData()->IsValid() );
-#endif
-
- wxString s = ch;
- s += str;
-
- return s;
-}
+ size_t len = length();
-wxString operator+(const wxString& str, const wxChar *psz)
-{
-#if !wxUSE_STL
- wxASSERT( str.GetStringData()->IsValid() );
-#endif
+ if ( nStart == npos )
+ {
+ nStart = len - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ }
- wxString s;
- if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
- }
- s += str;
- s += psz;
+ size_t idx = nStart;
+ for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
+ i != rend(); --idx, ++i )
+ {
+ if ( *i != ch )
+ return idx;
+ }
- return s;
+ return npos;
}
-wxString operator+(const wxChar *psz, const wxString& str)
-{
-#if !wxUSE_STL
- wxASSERT( str.GetStringData()->IsValid() );
+// the functions above were implemented for wchar_t* arguments in Unicode
+// build and char* in ANSI build; below are implementations for the other
+// version:
+#if wxUSE_UNICODE
+ #define wxOtherCharType char
+ #define STRCONV (const wxChar*)wxConvLibc.cMB2WC
+#else
+ #define wxOtherCharType wchar_t
+ #define STRCONV (const wxChar*)wxConvLibc.cWC2MB
#endif
- wxString s;
- if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
- }
- s = psz;
- s += str;
+size_t wxString::find_first_of(const wxOtherCharType* sz, size_t nStart) const
+ { return find_first_of(STRCONV(sz), nStart); }
+
+size_t wxString::find_first_of(const wxOtherCharType* sz, size_t nStart,
+ size_t n) const
+ { return find_first_of(STRCONV(sz, n, NULL), nStart, n); }
+size_t wxString::find_last_of(const wxOtherCharType* sz, size_t nStart) const
+ { return find_last_of(STRCONV(sz), nStart); }
+size_t wxString::find_last_of(const wxOtherCharType* sz, size_t nStart,
+ size_t n) const
+ { return find_last_of(STRCONV(sz, n, NULL), nStart, n); }
+size_t wxString::find_first_not_of(const wxOtherCharType* sz, size_t nStart) const
+ { return find_first_not_of(STRCONV(sz), nStart); }
+size_t wxString::find_first_not_of(const wxOtherCharType* sz, size_t nStart,
+ size_t n) const
+ { return find_first_not_of(STRCONV(sz, n, NULL), nStart, n); }
+size_t wxString::find_last_not_of(const wxOtherCharType* sz, size_t nStart) const
+ { return find_last_not_of(STRCONV(sz), nStart); }
+size_t wxString::find_last_not_of(const wxOtherCharType* sz, size_t nStart,
+ size_t n) const
+ { return find_last_not_of(STRCONV(sz, n, NULL), nStart, n); }
- return s;
-}
+#undef wxOtherCharType
+#undef STRCONV
+
+#endif // !wxUSE_STL_BASED_WXSTRING || wxUSE_UNICODE_UTF8
// ===========================================================================
// other common string functions
// ===========================================================================
-int wxString::Cmp(const wxString& s) const
-{
- return compare(s);
-}
-
-int wxString::Cmp(const wxChar* psz) const
+int wxString::CmpNoCase(const wxString& s) const
{
- return compare(psz);
-}
+ // FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
-static inline int wxDoCmpNoCase(const wxChar* s1, size_t l1,
- const wxChar* s2, size_t l2)
-{
- size_t i;
+ size_t idx = 0;
+ const_iterator i1 = begin();
+ const_iterator end1 = end();
+ const_iterator i2 = s.begin();
+ const_iterator end2 = s.end();
- 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 ( ; i1 != end1 && i2 != end2; ++idx, ++i1, ++i2 )
{
- 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;
+ wxUniChar lower1 = (wxChar)wxTolower(*i1);
+ wxUniChar lower2 = (wxChar)wxTolower(*i2);
+ if ( lower1 != lower2 )
+ return lower1 < lower2 ? -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);
+ size_t len1 = length();
+ size_t len2 = s.length();
- return wxDoCmpNoCase(data(), length(), psz, nLen);
+ if ( len1 < len2 )
+ return -1;
+ else if ( len1 > len2 )
+ return 1;
+ return 0;
}
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
- size_t nLen = length();
+ size_t nLen = length();
- // default value of nCount is npos and means "till the end"
- if ( nCount == npos )
- {
- 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(*this, nFirst, nCount);
- if ( dest.length() != nCount ) {
- wxFAIL_MSG( _T("out of memory in wxString::Mid") );
- }
+ 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 string starts with prefix and return the rest of the string
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(wx_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
{
// get all characters after the last occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::AfterLast(wxChar ch) const
+wxString wxString::AfterLast(wxUniChar ch) const
{
wxString str;
int iPos = Find(ch, true);
if ( iPos == wxNOT_FOUND )
str = *this;
else
- str = c_str() + iPos + 1;
+ str = wx_str() + iPos + 1;
return str;
}
// get all characters before the first occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::BeforeFirst(wxChar ch) const
+wxString wxString::BeforeFirst(wxUniChar ch) const
{
int iPos = Find(ch);
if ( iPos == wxNOT_FOUND ) iPos = length();
/// get all characters before the last occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::BeforeLast(wxChar ch) const
+wxString wxString::BeforeLast(wxUniChar ch) const
{
wxString str;
int iPos = Find(ch, true);
/// get all characters after the first occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::AfterFirst(wxChar ch) const
+wxString wxString::AfterFirst(wxUniChar ch) const
{
wxString str;
int iPos = Find(ch);
if ( iPos != wxNOT_FOUND )
- str = c_str() + iPos + 1;
+ str = wx_str() + iPos + 1;
return str;
}
// 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)
{
// 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 uiCount = 0; // count of replacements made
+ size_t uiCount = 0; // count of replacements made
- size_t uiOldLen = wxStrlen(szOld);
+ size_t uiOldLen = wxStrlen(szOld);
+ size_t uiNewLen = wxStrlen(szNew);
- wxString strTemp;
- const wxChar *pCurrent = c_str();
- 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 dwPos = 0;
- strTemp += pCurrent; // copy the rest
- break; // exit the loop
- }
- else {
- // take chars before match
- size_type len = strTemp.length();
- strTemp.append(pCurrent, pSubstr - pCurrent);
- if ( strTemp.length() != (size_t)(len + pSubstr - pCurrent) ) {
- wxFAIL_MSG( _T("out of memory in wxString::Replace") );
- return 0;
- }
- strTemp += szNew;
- pCurrent = pSubstr + uiOldLen; // restart after match
-
- uiCount++;
-
- // stop now?
- if ( !bReplaceAll ) {
- strTemp += pCurrent; // copy the rest
- break; // exit the loop
- }
- }
- }
+ 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);
+
+ //move up pos past the string that was replaced
+ dwPos += uiNewLen;
+
+ //increase replace count
+ ++uiCount;
- // only done if there were replacements, otherwise would have returned above
- swap(strTemp);
+ // stop now?
+ if ( !bReplaceAll )
+ break; // exit the loop
+ }
+ }
- return uiCount;
+ return uiCount;
}
bool wxString::IsAscii() const
// 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 ( !empty() &&
- (
- (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
- (!bFromRight && wxSafeIsspace(GetChar(0u)))
- )
- )
- {
- if ( bFromRight )
- {
- // find last non-space character
- iterator psz = begin() + length() - 1;
- while ( wxSafeIsspace(*psz) && (psz >= begin()) )
- psz--;
-
- // truncate at trailing space start
- *++psz = wxT('\0');
- erase(psz, end());
- }
- else
+{
+ // first check if we're going to modify the string at all
+ if ( !empty() &&
+ (
+ (bFromRight && wxSafeIsspace(GetChar(length() - 1))) ||
+ (!bFromRight && wxSafeIsspace(GetChar(0u)))
+ )
+ )
{
- // find first non-space character
- iterator psz = begin();
- while ( wxSafeIsspace(*psz) )
- 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++;
- // fix up data and length
- erase(begin(), psz);
+ // fix up data and length
+ erase(begin(), psz);
+ }
}
- }
- 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& wxString::Pad(size_t nCount, wxUniChar chPad, bool bFromRight)
{
- wxString s(chPad, nCount);
+ wxString s(chPad, nCount);
- if ( bFromRight )
- *this += s;
- else
- {
- s += *this;
- swap(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() ) {
- erase(begin() + uiLen, end());
- }
- //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
+int wxString::Find(wxUniChar ch, bool bFromEnd) const
{
- size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
+ size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
- return (idx == npos) ? wxNOT_FOUND : (int)idx;
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
// find a sub-string (like strstr)
int wxString::Find(const wxChar *pszSub) const
{
- size_type idx = find(pszSub);
+ size_type idx = find(pszSub);
- return (idx == npos) ? wxNOT_FOUND : (int)idx;
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
// ----------------------------------------------------------------------------
// conversion to numbers
// ----------------------------------------------------------------------------
-bool wxString::ToLong(long *val, int base) const
+// the implementation of all the functions below is exactly the same so factor
+// it out
+
+template <typename T, typename F>
+bool wxStringToIntType(const wxChar *start,
+ T *val,
+ int base,
+ F func)
{
- wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToLong") );
+ wxCHECK_MSG( val, false, _T("NULL output pointer") );
wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
- const wxChar *start = c_str();
+#ifndef __WXWINCE__
+ errno = 0;
+#endif
+
wxChar *end;
- *val = wxStrtol(start, &end, base);
+ *val = (*func)(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);
+ // string was not empty to start with and no under/overflow occurred
+ return !*end && (end != start)
+#ifndef __WXWINCE__
+ && (errno != ERANGE)
+#endif
+ ;
+}
+
+bool wxString::ToLong(long *val, int base) const
+{
+ return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtol);
}
bool wxString::ToULong(unsigned long *val, int base) const
{
- wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToULong") );
- wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+ return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtoul);
+}
- const wxChar *start = c_str();
- wxChar *end;
- *val = wxStrtoul(start, &end, base);
+bool wxString::ToLongLong(wxLongLong_t *val, int base) const
+{
+#ifdef wxHAS_STRTOLL
+ return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtoll);
+#else
+ // TODO: implement this ourselves
+ wxUnusedVar(val);
+ wxUnusedVar(base);
+ return false;
+#endif // wxHAS_STRTOLL
+}
- // 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::ToULongLong(wxULongLong_t *val, int base) const
+{
+#ifdef wxHAS_STRTOLL
+ return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtoull);
+#else
+ // TODO: implement this ourselves
+ wxUnusedVar(val);
+ wxUnusedVar(base);
+ return false;
+#endif
}
bool wxString::ToDouble(double *val) const
{
wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToDouble") );
+#ifndef __WXWINCE__
+ errno = 0;
+#endif
+
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);
+ // string was not empty to start with and no under/overflow occurred
+ return !*end && (end != start)
+#ifndef __WXWINCE__
+ && (errno != ERANGE)
+#endif
+ ;
}
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
/* static */
-wxString wxString::Format(const wxChar *pszFormat, ...)
+#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
+wxString wxStringPrintfMixinBase::DoFormat(const wxChar *format, ...)
+#else
+wxString wxString::DoFormat(const wxChar *format, ...)
+#endif
{
va_list argptr;
- va_start(argptr, pszFormat);
+ va_start(argptr, format);
wxString s;
- s.PrintfV(pszFormat, argptr);
+ s.PrintfV(format, argptr);
va_end(argptr);
}
/* static */
-wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
+wxString wxString::FormatV(const wxString& format, va_list argptr)
{
wxString s;
- s.PrintfV(pszFormat, argptr);
+ s.PrintfV(format, argptr);
return s;
}
-int wxString::Printf(const wxChar *pszFormat, ...)
+#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
+int wxStringPrintfMixinBase::DoPrintf(const wxChar *format, ...)
+#else
+int wxString::DoPrintf(const wxChar *format, ...)
+#endif
{
- va_list argptr;
- va_start(argptr, pszFormat);
+ va_list argptr;
+ va_start(argptr, format);
+
+#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
+ // get a pointer to the wxString instance; we have to use dynamic_cast<>
+ // because it's the only cast that works safely for downcasting when
+ // multiple inheritance is used:
+ wxString *str = static_cast<wxString*>(this);
+#else
+ wxString *str = this;
+#endif
- int iLen = PrintfV(pszFormat, argptr);
+ int iLen = str->PrintfV(format, argptr);
- va_end(argptr);
+ va_end(argptr);
- return iLen;
+ return iLen;
}
-int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
+int wxString::PrintfV(const wxString& format, va_list argptr)
{
int size = 1024;
- int len;
for ( ;; )
{
+ wxStringBuffer tmp(*this, size + 1);
+ wxChar *buf = tmp;
+
+ if ( !buf )
{
- wxStringBuffer tmp(*this, size + 1);
- wxChar* buf = tmp;
-
- if ( !buf )
- {
- // out of memory
- return -1;
- }
-
- // wxVsnprintf() may modify the original arg pointer, so pass it
- // only a copy
- va_list argptrcopy;
- wxVaCopy(argptrcopy, argptr);
- 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');
+ // out of memory
+ return -1;
}
+ // wxVsnprintf() may modify the original arg pointer, so pass it
+ // only a copy
+ va_list argptrcopy;
+ wxVaCopy(argptrcopy, argptr);
+ int len = wxVsnprintf(buf, size, format, 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
- if ( len >= 0 && len <= size )
+ // buffer were large enough (newer standards such as Unix98)
+ if ( len < 0 )
+ {
+#if wxUSE_WXVSNPRINTF
+ // we know that our own implementation of wxVsnprintf() returns -1
+ // only for a format error - thus there's something wrong with
+ // the user's format string
+ return -1;
+#else // assume that system version only returns error if not enough space
+ // still not enough, as we don't know how much we need, double the
+ // current size of the buffer
+ size *= 2;
+#endif // wxUSE_WXVSNPRINTF/!wxUSE_WXVSNPRINTF
+ }
+ else if ( len >= size )
+ {
+#if wxUSE_WXVSNPRINTF
+ // we know that our own implementation of wxVsnprintf() returns
+ // size+1 when there's not enough space but that's not the size
+ // of the required buffer!
+ size *= 2; // so we just double the current size of the buffer
+#else
+ // some vsnprintf() implementations NUL-terminate the buffer and
+ // some don't in len == size case, to be safe always add 1
+ size = len + 1;
+#endif
+ }
+ else // ok, there was enough space
{
- // ok, there was enough space
break;
}
-
- // still not enough, double it again
- size *= 2;
}
// we could have overshot
Shrink();
- return Len();
+ return length();
}
// ----------------------------------------------------------------------------
}
// Count the number of chars
-int wxString::Freq(wxChar ch) const
+int wxString::Freq(wxUniChar ch) const
{
int count = 0;
- int len = Len();
- for (int i = 0; i < len; i++)
+ for ( const_iterator i = begin(); i != end(); ++i )
{
- if (GetChar(i) == ch)
+ if ( *i == ch )
count ++;
}
return count;
// 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;
- }
-
-// ============================================================================
-// ArrayString
-// ============================================================================
-
-#include "wx/arrstr.h"
-
-#if !wxUSE_STL
-
-// 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)
-#endif
-
-#define STRING(p) ((wxString *)(&(p)))
-
-// ctor
-void wxArrayString::Init(bool autoSort)
-{
- m_nSize =
- m_nCount = 0;
- m_pItems = (wxChar **) NULL;
- m_autoSort = autoSort;
-}
-
-// copy ctor
-wxArrayString::wxArrayString(const wxArrayString& src)
-{
- Init(src.m_autoSort);
-
- *this = src;
-}
-
-// assignment operator
-wxArrayString& wxArrayString::operator=(const wxArrayString& src)
-{
- if ( m_nSize > 0 )
- Clear();
-
- Copy(src);
-
- 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);
-
- for ( size_t n = 0; n < src.m_nCount; n++ )
- Add(src[n]);
-}
-
-// grow the array
-void wxArrayString::Grow(size_t nIncrement)
-{
- // only do it if no more place
- 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;
- 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
- // add 50% but not too much
- size_t ndefIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
- ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
- if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT )
- ndefIncrement = ARRAY_MAXSIZE_INCREMENT;
- if ( nIncrement < ndefIncrement )
- nIncrement = ndefIncrement;
- m_nSize += nIncrement;
- wxChar **pNew = new wxChar *[m_nSize];
-
- // copy data to new location
- memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
-
- // delete old memory (but do not release the strings!)
- wxDELETEA(m_pItems);
-
- m_pItems = pNew;
- }
- }
-}
-
-void wxArrayString::Free()
-{
- for ( size_t n = 0; n < m_nCount; n++ ) {
- STRING(m_pItems[n])->GetStringData()->Unlock();
- }
-}
-
-// deletes all the strings from the list
-void wxArrayString::Empty()
-{
- Free();
-
- m_nCount = 0;
-}
-
-// as Empty, but also frees memory
-void wxArrayString::Clear()
-{
- Free();
-
- m_nSize =
- m_nCount = 0;
-
- wxDELETEA(m_pItems);
-}
-
-// dtor
-wxArrayString::~wxArrayString()
-{
- Free();
-
- wxDELETEA(m_pItems);
-}
-
-void wxArrayString::reserve(size_t nSize)
-{
- Alloc(nSize);
-}
-
-// pre-allocates memory (frees the previous data!)
-void wxArrayString::Alloc(size_t nSize)
-{
- // only if old buffer was not big enough
- if ( nSize > m_nSize ) {
- Free();
- wxDELETEA(m_pItems);
- m_pItems = new wxChar *[nSize];
- m_nSize = nSize;
- }
-
- m_nCount = 0;
-}
-
-// minimizes the memory usage by freeing unused memory
-void wxArrayString::Shrink()
-{
- // 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;
- }
-}
-
-#if WXWIN_COMPATIBILITY_2_4
-
-// 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;
-}
-
-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
-{
- 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 {
- // 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 wxNOT_FOUND;
-}
-
-// add item at the end
-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 = str.Cmp(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") );
-
- Insert(str, lo, nInsert);
-
- 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, size_t nInsert)
-{
- wxASSERT( str.GetStringData()->IsValid() );
-
- 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);
-
- memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex],
- (m_nCount - nIndex)*sizeof(wxChar *));
-
- for (size_t i = 0; i < nInsert; i++)
- {
- str.GetStringData()->Lock();
- m_pItems[nIndex + i] = (wxChar *)str.c_str();
- }
- 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)
-{
- Alloc(count);
-
- wxString s;
- while ( m_nCount < count )
- m_pItems[m_nCount++] = (wxChar *)s.c_str();
-}
-
-// removes item from array (by index)
-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,
- wxT("removing too many elements in wxArrayString::Remove") );
-
- // release our lock
- for (size_t i = 0; i < nRemove; i++)
- Item(nIndex + i).GetStringData()->Unlock();
-
- 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 wxChar *sz)
-{
- int iIndex = Index(sz);
-
- wxCHECK_RET( iIndex != wxNOT_FOUND,
- wxT("removing inexistent element in wxArrayString::Remove") );
-
- RemoveAt(iIndex);
-}
-
-void wxArrayString::assign(const_iterator first, const_iterator last)
-{
- reserve(last - first);
- for(; first != last; ++first)
- push_back(*first);
-}
-
-// ----------------------------------------------------------------------------
-// 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 = strFirst->Cmp(*strSecond);
-
- 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();
-}
-
-typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first, const void *second);
-
-void wxArrayString::Sort(CompareFunction2 compareFunction)
-{
- qsort(m_pItems, m_nCount, sizeof(wxChar *), (wxStringCompareFn)compareFunction);
-}
-
-void wxArrayString::Sort(bool reverseOrder)
-{
- Sort(reverseOrder ? wxStringSortDescending : wxStringSortAscending);
-}
-
-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
-{
- 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;
-}
-
-#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