// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/*
- * About ref counting:
- * 1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
- * 2) AllocBuffer() sets nRefs to 1, Lock() increments it by one
- * 3) Unlock() decrements nRefs and frees memory if it goes to 0
- */
-
// ===========================================================================
// headers, declarations, constants
// ===========================================================================
#ifndef WX_PRECOMP
#include "wx/string.h"
- #include "wx/intl.h"
- #include "wx/thread.h"
+ #include "wx/wxcrtvararg.h"
#endif
#include <ctype.h>
-#include <errno.h>
+
+#ifndef __WXWINCE__
+ #include <errno.h>
+#endif
+
#include <string.h>
#include <stdlib.h>
#include <clib.h>
#endif
-// allocating extra space for each string consumes more memory but speeds up
-// the concatenation operations (nLen is the current string's length)
-// 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("");
+#include "wx/hashmap.h"
+// 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
-// 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;
+// ---------------------------------------------------------------------------
+// static class variables definition
+// ---------------------------------------------------------------------------
-#endif
+//According to STL _must_ be a -1 size_t
+const size_t wxString::npos = (size_t) -1;
// ----------------------------------------------------------------------------
// global functions
#include <iostream>
-wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
{
-#ifdef __BORLANDC__
- os << str.mb_str();
+// FIXME-UTF8: always, not only if wxUSE_UNICODE
+#if wxUSE_UNICODE && !defined(__BORLANDC__)
+ return os << (const wchar_t*)str.AsWCharBuf();
#else
- os << str.c_str();
+ return os << (const char*)str.AsCharBuf();
#endif
- return os;
}
-#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
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
+{
+ return os << str.c_str();
+}
-// ===========================================================================
-// wxStringData class deallocation
-// ===========================================================================
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxCharBuffer& str)
+{
+ return os << str.data();
+}
-#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()
+#ifndef __BORLANDC__
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxWCharBuffer& str)
{
- free(this);
+ return os << str.data();
}
#endif
+#endif // wxUSE_STD_IOSTREAM
+
// ===========================================================================
-// wxStringBase
+// wxString class core
// ===========================================================================
-// 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);
- }
+#if wxUSE_UNICODE_UTF8
- STATISTICS_ADD(InitialLength, nLength);
+void wxString::PosLenToImpl(size_t pos, size_t len,
+ size_t *implPos, size_t *implLen) const
+{
+ if ( pos == npos )
+ *implPos = npos;
+ else
+ {
+ const_iterator i = begin() + pos;
+ *implPos = wxStringImpl::const_iterator(i.impl()) - m_impl.begin();
+ if ( len == npos )
+ *implLen = npos;
+ else
+ {
+ // too large length is interpreted as "to the end of the string"
+ // FIXME-UTF8: verify this is the case in std::string, assert
+ // otherwise
+ if ( pos + len > length() )
+ len = length() - pos;
- if ( nLength > 0 ) {
- // trailing '\0' is written in AllocBuffer()
- if ( !AllocBuffer(nLength) ) {
- wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") );
- return;
+ *implLen = (i + len).impl() - i.impl();
+ }
}
- wxTmemcpy(m_pchData, psz + nPos, nLength);
- }
}
-// poor man's iterators are "void *" pointers
-wxStringBase::wxStringBase(const void *pStart, const void *pEnd)
-{
- if ( pEnd >= pStart )
- {
- InitWith((const wxChar *)pStart, 0,
- (const wxChar *)pEnd - (const wxChar *)pStart);
- }
- else
- {
- wxFAIL_MSG( _T("pStart is not before pEnd") );
- Init();
- }
-}
+#endif // wxUSE_UNICODE_UTF8
-wxStringBase::wxStringBase(size_type n, wxChar ch)
-{
- Init();
- append(n, ch);
+// ----------------------------------------------------------------------------
+// wxCStrData converted strings caching
+// ----------------------------------------------------------------------------
+
+// FIXME-UTF8: temporarily disabled because it doesn't work with global
+// string objects; re-enable after fixing this bug and benchmarking
+// performance to see if using a hash is a good idea at all
+#if 0
+
+// For backward compatibility reasons, it must be possible to assign the value
+// returned by wxString::c_str() to a char* or wchar_t* variable and work with
+// it. Returning wxCharBuffer from (const char*)c_str() wouldn't do the trick,
+// because the memory would be freed immediately, but it has to be valid as long
+// as the string is not modified, so that code like this still works:
+//
+// const wxChar *s = str.c_str();
+// while ( s ) { ... }
+
+// FIXME-UTF8: not thread safe!
+// FIXME-UTF8: we currently clear the cached conversion only when the string is
+// destroyed, but we should do it when the string is modified, to
+// keep memory usage down
+// FIXME-UTF8: we do the conversion every time As[W]Char() is called, but if we
+// invalidated the cache on every change, we could keep the previous
+// conversion
+// FIXME-UTF8: add tracing of usage of these two methods - new code is supposed
+// to use mb_str() or wc_str() instead of (const [w]char*)c_str()
+
+template<typename T>
+static inline void DeleteStringFromConversionCache(T& hash, const wxString *s)
+{
+ typename T::iterator i = hash.find(wxConstCast(s, wxString));
+ if ( i != hash.end() )
+ {
+ free(i->second);
+ hash.erase(i);
+ }
}
-// ---------------------------------------------------------------------------
-// memory allocation
-// ---------------------------------------------------------------------------
+#if wxUSE_UNICODE
+// NB: non-STL implementation doesn't compile with "const wxString*" key type,
+// so we have to use wxString* here and const-cast when used
+WX_DECLARE_HASH_MAP(wxString*, char*, wxPointerHash, wxPointerEqual,
+ wxStringCharConversionCache);
+static wxStringCharConversionCache gs_stringsCharCache;
-// allocates memory needed to store a C string of length nLen
-bool wxStringBase::AllocBuffer(size_t nLen)
+const char* wxCStrData::AsChar() const
{
- // 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) );
+ // remove previously cache value, if any (see FIXMEs above):
+ DeleteStringFromConversionCache(gs_stringsCharCache, m_str);
- STATISTICS_ADD(Length, nLen);
+ // convert the string and keep it:
+ const char *s = gs_stringsCharCache[wxConstCast(m_str, wxString)] =
+ m_str->mb_str().release();
- // 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 ( 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;
+ return s + m_offset;
}
+#endif // wxUSE_UNICODE
-// must be called before changing this string
-bool wxStringBase::CopyBeforeWrite()
-{
- wxStringData* pData = GetStringData();
+#if !wxUSE_UNICODE_WCHAR
+WX_DECLARE_HASH_MAP(wxString*, wchar_t*, wxPointerHash, wxPointerEqual,
+ wxStringWCharConversionCache);
+static wxStringWCharConversionCache gs_stringsWCharCache;
- 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);
- }
+const wchar_t* wxCStrData::AsWChar() const
+{
+ // remove previously cache value, if any (see FIXMEs above):
+ DeleteStringFromConversionCache(gs_stringsWCharCache, m_str);
- wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+ // convert the string and keep it:
+ const wchar_t *s = gs_stringsWCharCache[wxConstCast(m_str, wxString)] =
+ m_str->wc_str().release();
- return true;
+ return s + m_offset;
}
+#endif // !wxUSE_UNICODE_WCHAR
-// must be called before replacing contents of this string
-bool wxStringBase::AllocBeforeWrite(size_t nLen)
+wxString::~wxString()
{
- 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);
-
- nLen += EXTRA_ALLOC;
-
- pData = (wxStringData*)
- realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
-
- if ( pData == NULL ) {
- // allocation failures are handled by the caller
- // keep previous data since reallocation failed
- return false;
- }
-
- pData->nAllocLength = nLen;
- m_pchData = pData->data();
- }
- }
-
- 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;
+#if wxUSE_UNICODE
+ // FIXME-UTF8: do this only if locale is not UTF8 if wxUSE_UNICODE_UTF8
+ DeleteStringFromConversionCache(gs_stringsCharCache, this);
+#endif
+#if !wxUSE_UNICODE_WCHAR
+ DeleteStringFromConversionCache(gs_stringsWCharCache, this);
+#endif
}
+#endif
-wxStringBase& wxStringBase::append(size_t n, wxChar ch)
+#if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
+const char* wxCStrData::AsChar() const
{
- size_type len = length();
+#if wxUSE_UNICODE_UTF8
+ if ( wxLocaleIsUtf8 )
+ return AsInternal();
+#endif
+ // under non-UTF8 locales, we have to convert the internal UTF-8
+ // representation using wxConvLibc and cache the result
- 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;
-}
+ wxString *str = wxConstCast(m_str, wxString);
-void wxStringBase::resize(size_t nSize, wxChar ch)
-{
- size_t len = length();
+ // convert the string:
+ wxCharBuffer buf(str->mb_str());
- if ( nSize < len )
+ // FIXME-UTF8: do the conversion in-place in the existing buffer
+ if ( str->m_convertedToChar &&
+ strlen(buf) == strlen(str->m_convertedToChar) )
{
- erase(begin() + nSize, end());
+ // keep the same buffer for as long as possible, so that several calls
+ // to c_str() in a row still work:
+ strcpy(str->m_convertedToChar, buf);
}
- else if ( nSize > len )
+ else
{
- append(nSize - len, ch);
+ str->m_convertedToChar = buf.release();
}
- //else: we have exactly the specified length, nothing to do
+
+ // and keep it:
+ return str->m_convertedToChar + m_offset;
}
+#endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
-// allocate enough memory for nLen characters
-bool wxStringBase::Alloc(size_t nLen)
+#if !wxUSE_UNICODE_WCHAR
+const wchar_t* wxCStrData::AsWChar() const
{
- wxStringData *pData = GetStringData();
- if ( pData->nAllocLength <= nLen ) {
- if ( pData->IsEmpty() ) {
- nLen += EXTRA_ALLOC;
-
- pData = (wxStringData *)
- malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ wxString *str = wxConstCast(m_str, wxString);
- if ( pData == NULL ) {
- // allocation failure handled by caller
- return false;
- }
+ // convert the string:
+ wxWCharBuffer buf(str->wc_str());
- 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;
- }
- // +1 to copy the terminator, too
- memcpy(m_pchData, pData->data(), (nOldLen+1)*sizeof(wxChar));
- GetStringData()->nDataLength = nOldLen;
+ // FIXME-UTF8: do the conversion in-place in the existing buffer
+ if ( str->m_convertedToWChar &&
+ wxWcslen(buf) == wxWcslen(str->m_convertedToWChar) )
+ {
+ // keep the same buffer for as long as possible, so that several calls
+ // to c_str() in a row still work:
+ memcpy(str->m_convertedToWChar, buf, sizeof(wchar_t) * wxWcslen(buf));
}
- else {
- nLen += EXTRA_ALLOC;
-
- pData = (wxStringData *)
- realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
-
- 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)
- pData->nAllocLength = nLen;
- m_pchData = pData->data();
+ else
+ {
+ str->m_convertedToWChar = buf.release();
}
- }
- //else: we've already got enough
- return true;
-}
-
-wxStringBase::iterator wxStringBase::begin()
-{
- if (length() > 0)
- CopyBeforeWrite();
- return m_pchData;
-}
-
-wxStringBase::iterator wxStringBase::end()
-{
- if (length() > 0)
- CopyBeforeWrite();
- return m_pchData + length();
-}
-wxStringBase::iterator wxStringBase::erase(iterator it)
-{
- size_type idx = it - begin();
- erase(idx, 1);
- return begin() + idx;
+ // and keep it:
+ return str->m_convertedToWChar + m_offset;
}
+#endif // !wxUSE_UNICODE_WCHAR
-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);
+// ===========================================================================
+// wxString class core
+// ===========================================================================
- swap(strTmp);
- return *this;
-}
+// ---------------------------------------------------------------------------
+// construction and conversion
+// ---------------------------------------------------------------------------
-wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
+#if wxUSE_UNICODE_WCHAR
+/* static */
+wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
+ const wxMBConv& conv)
{
- 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") );
- }
+ // anything to do?
+ if ( !psz || nLength == 0 )
+ return SubstrBufFromMB(L"", 0);
- 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';
+ if ( nLength == npos )
+ nLength = wxNO_LEN;
- return *this;
-}
-
-void wxStringBase::swap(wxStringBase& str)
-{
- wxChar* tmp = str.m_pchData;
- str.m_pchData = m_pchData;
- m_pchData = tmp;
+ size_t wcLen;
+ wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+ if ( !wcLen )
+ return SubstrBufFromMB(_T(""), 0);
+ else
+ return SubstrBufFromMB(wcBuf, wcLen);
}
+#endif // wxUSE_UNICODE_WCHAR
-size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
+#if wxUSE_UNICODE_UTF8
+/* static */
+wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
+ const wxMBConv& conv)
{
- // deal with the special case of empty string first
- const size_t nLen = length();
- const size_t nLenOther = str.length();
+ // anything to do?
+ if ( !psz || nLength == 0 )
+ return SubstrBufFromMB("", 0);
- if ( !nLenOther )
+ // if psz is already in UTF-8, we don't have to do the roundtrip to
+ // wchar_t* and back:
+ if ( conv.IsUTF8() )
{
- // empty string is a substring of anything
- return 0;
+ // we need to validate the input because UTF8 iterators assume valid
+ // UTF-8 sequence and psz may be invalid:
+ if ( wxStringOperations::IsValidUtf8String(psz, nLength) )
+ {
+ return SubstrBufFromMB(wxCharBuffer::CreateNonOwned(psz), nLength);
+ }
+ // else: do the roundtrip through wchar_t*
}
- if ( !nLen )
- {
- // the other string is non empty so can't be our substring
- return npos;
- }
+ if ( nLength == npos )
+ nLength = wxNO_LEN;
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= nLen );
+ // first convert to wide string:
+ size_t wcLen;
+ wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+ if ( !wcLen )
+ return SubstrBufFromMB("", 0);
- const wxChar * const other = str.c_str();
+ // and then to UTF-8:
+ SubstrBufFromMB buf(ConvertStr(wcBuf, wcLen, wxMBConvStrictUTF8()));
+ // widechar -> UTF-8 conversion isn't supposed to ever fail:
+ wxASSERT_MSG( buf.data, _T("conversion to UTF-8 failed") );
- // anchor
- const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
- *other,
- nLen - nStart);
+ return buf;
+}
+#endif // wxUSE_UNICODE_UTF8
- if ( !p )
- return npos;
+#if wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
+/* static */
+wxString::SubstrBufFromWC wxString::ConvertStr(const wchar_t *pwz, size_t nLength,
+ const wxMBConv& conv)
+{
+ // anything to do?
+ if ( !pwz || nLength == 0 )
+ return SubstrBufFromWC("", 0);
- while ( p - c_str() + nLenOther <= nLen && wxTmemcmp(p, other, nLenOther) )
- {
- p++;
+ if ( nLength == npos )
+ nLength = wxNO_LEN;
- // anchor again
- p = (const wxChar*)wxTmemchr(p, *other, nLen - (p - c_str()));
+ size_t mbLen;
+ wxCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
+ if ( !mbLen )
+ return SubstrBufFromWC("", 0);
+ else
+ return SubstrBufFromWC(mbBuf, mbLen);
+}
+#endif // wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
- if ( !p )
- return npos;
- }
- return p - c_str() + nLenOther <= nLen ? p - c_str() : npos;
-}
+#if wxUSE_UNICODE_WCHAR
-size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
+//Convert wxString in Unicode mode to a multi-byte string
+const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
{
- return find(wxStringBase(sz, n), nStart);
+ return conv.cWC2MB(wx_str(), length() + 1 /* size, not length */, NULL);
}
-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);
+#elif wxUSE_UNICODE_UTF8
- return p == NULL ? npos : p - c_str();
+const wxWCharBuffer wxString::wc_str() const
+{
+ return wxMBConvStrictUTF8().cMB2WC
+ (
+ m_impl.c_str(),
+ m_impl.length() + 1, // size, not length
+ NULL
+ );
}
-size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
+const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart == npos || nStart <= length() );
+ if ( conv.IsUTF8() )
+ return wxCharBuffer::CreateNonOwned(m_impl.c_str());
- if ( length() >= str.length() )
- {
- // avoids a corner case later
- if ( length() == 0 && str.length() == 0 )
- return 0;
+ // FIXME-UTF8: use wc_str() here once we have buffers with length
- // "top" is the point where search starts from
- size_t top = length() - str.length();
+ size_t wcLen;
+ wxWCharBuffer wcBuf(wxMBConvStrictUTF8().cMB2WC
+ (
+ m_impl.c_str(),
+ m_impl.length() + 1, // size
+ &wcLen
+ ));
+ if ( !wcLen )
+ return wxCharBuffer("");
- if ( nStart == npos )
- nStart = length() - 1;
- if ( nStart < top )
- top = nStart;
-
- const wxChar *cursor = c_str() + top;
- do
- {
- if ( wxTmemcmp(cursor, str.c_str(),
- str.length()) == 0 )
- {
- return cursor - c_str();
- }
- } while ( cursor-- > c_str() );
- }
-
- return npos;
+ return conv.cWC2MB(wcBuf, wcLen, NULL);
}
-size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const
-{
- return rfind(wxStringBase(sz, n), nStart);
-}
+#else // ANSI
-size_t wxStringBase::rfind(wxChar ch, size_t nStart) const
+//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
{
- 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;
+ return conv.cMB2WC(wx_str(), length() + 1 /* size, not length */, NULL);
}
-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;
- }
+#endif // Unicode/ANSI
- if(i == this->length())
- return npos;
- else
- return i;
+// shrink to minimal size (releasing extra memory)
+bool wxString::Shrink()
+{
+ wxString tmp(begin(), end());
+ swap(tmp);
+ return tmp.length() == length();
}
-size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
- size_t n) const
+// deprecated compatibility code:
+#if WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
+wxStringCharType *wxString::GetWriteBuf(size_t nLen)
{
- return find_first_of(wxStringBase(sz, n), nStart);
+ return DoGetWriteBuf(nLen);
}
-size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const
+void wxString::UngetWriteBuf()
{
- 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;
+ DoUngetWriteBuf();
}
-size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
- size_t n) const
+void wxString::UngetWriteBuf(size_t nLen)
{
- return find_last_of(wxStringBase(sz, n), nStart);
+ DoUngetWriteBuf(nLen);
}
+#endif // WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
-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);
+// ---------------------------------------------------------------------------
+// data access
+// ---------------------------------------------------------------------------
- size_t i;
- for(i = nStart; i < this->length(); ++i)
- {
- if (!wxTmemchr(sz, *(c_str() + i), len))
- break;
- }
+// all functions are inline in string.h
- if(i == this->length())
- return npos;
- else
- return i;
-}
+// ---------------------------------------------------------------------------
+// concatenation operators
+// ---------------------------------------------------------------------------
-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);
-}
+/*
+ * concatenation functions come in 5 flavours:
+ * string + string
+ * char + string and string + char
+ * C str + string and string + C str
+ */
-size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const
+wxString operator+(const wxString& str1, const wxString& str2)
{
- wxASSERT( nStart <= length() );
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str1.IsValid() );
+ wxASSERT( str2.IsValid() );
+#endif
- for ( const wxChar *p = c_str() + nStart; *p; p++ )
- {
- if ( *p != ch )
- return p - c_str();
- }
+ wxString s = str1;
+ s += str2;
- return npos;
+ return s;
}
-size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+wxString operator+(const wxString& str, wxUniChar ch)
{
- 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();
- }
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- return npos;
-}
+ wxString s = str;
+ s += ch;
-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+(wxUniChar ch, const wxString& str)
{
- 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 = ch;
+ s += str;
- return npos;
+ return s;
}
-wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
- const wxChar *sz)
+wxString operator+(const wxString& str, const char *psz)
{
- 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]);
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
- swap(strTmp);
- return *this;
-}
+ wxString s;
+ if ( !s.Alloc(strlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s += str;
+ s += psz;
-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 wxString& str, const wchar_t *pwz)
{
- 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(wxWcslen(pwz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s += str;
+ s += pwz;
-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 char *psz, 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(strlen(psz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
}
- }
-
- return *this;
-}
+ s = psz;
+ s += str;
-// 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;
+ return s;
}
-// assigns C string
-wxStringBase& wxStringBase::operator=(const wxChar *psz)
+wxString operator+(const wchar_t *pwz, const wxString& str)
{
- if ( !AssignCopy(wxStrlen(psz), psz) ) {
- wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(const wxChar *)") );
- }
- return *this;
-}
+#if !wxUSE_STL_BASED_WXSTRING
+ wxASSERT( str.IsValid() );
+#endif
-// 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;
+ wxString s;
+ if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
}
- memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
- GetStringData()->nDataLength = nSrcLen;
- m_pchData[nSrcLen] = wxT('\0');
- }
- return true;
+ s = pwz;
+ s += str;
+
+ return s;
}
// ---------------------------------------------------------------------------
-// string concatenation
+// string comparison
// ---------------------------------------------------------------------------
-// add something to this string
-bool wxStringBase::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData,
- size_t nMaxLen)
+bool wxString::IsSameAs(wxUniChar c, bool compareWithCase) const
{
- STATISTICS_ADD(SummandLength, nSrcLen);
-
- nSrcLen = nSrcLen < nMaxLen ? nSrcLen : nMaxLen;
+ return (length() == 1) && (compareWithCase ? GetChar(0u) == c
+ : wxToupper(GetChar(0u)) == wxToupper(c));
+}
- // concatenating an empty string is a NOP
- if ( nSrcLen > 0 ) {
- wxStringData *pData = GetStringData();
- size_t nLen = pData->nDataLength;
- size_t nNewLen = nLen + nSrcLen;
+#ifdef HAVE_STD_STRING_COMPARE
- // alloc new buffer if current is too small
- if ( pData->IsShared() ) {
- STATISTICS_ADD(ConcatHit, 0);
+// 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).
- // 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);
+int wxString::compare(const wxString& str) const
+{
+ return m_impl.compare(str.m_impl);
+}
- 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(size_t nStart, size_t nLen,
+ const wxString& str) const
+{
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
+ return m_impl.compare(pos, len, str.m_impl);
+}
- // the buffer is already big enough
- }
+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);
- // should be enough space
- wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+ size_t pos2, len2;
+ str.PosLenToImpl(nStart2, nLen2, &pos2, &len2);
- // fast concatenation - all is done in our buffer
- memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
+ return m_impl.compare(pos, len, str.m_impl, pos2, len2);
+}
- m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
- GetStringData()->nDataLength = nNewLen; // and fix the length
- }
- //else: the string to append was empty
- return true;
+int wxString::compare(const char* sz) const
+{
+ return m_impl.compare(ImplStr(sz));
}
-// ---------------------------------------------------------------------------
-// simple sub-string extraction
-// ---------------------------------------------------------------------------
+int wxString::compare(const wchar_t* sz) const
+{
+ return m_impl.compare(ImplStr(sz));
+}
-// 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 char* 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);
+
+ SubstrBufFromMB str(ImplStr(sz, nCount));
+
+ return m_impl.compare(pos, len, str.data, str.len);
}
-#endif // !wxUSE_STL
+int wxString::compare(size_t nStart, size_t nLen,
+ const wchar_t* sz, size_t nCount) const
+{
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
-#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+ SubstrBufFromWC str(ImplStr(sz, nCount));
-#if !wxUSE_STL
- #define STRINGCLASS wxStringBase
-#else
- #define STRINGCLASS wxString
-#endif
+ return m_impl.compare(pos, len, str.data, str.len);
+}
-static inline int wxDoCmp(const wxChar* s1, size_t l1,
- const wxChar* s2, size_t l2)
+#else // !HAVE_STD_STRING_COMPARE
+
+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);
-}
-
-#undef STRINGCLASS
-
-#endif // !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
-// ===========================================================================
-// wxString class core
-// ===========================================================================
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
-// ---------------------------------------------------------------------------
-// construction and conversion
-// ---------------------------------------------------------------------------
+ SubstrBufFromMB str(ImplStr(sz, nCount));
+ if ( str.len == npos )
+ str.len = wxStringStrlen(str.data);
-#if wxUSE_UNICODE
+ return ::wxDoCmp(m_impl.data() + pos, len, str.data, str.len);
+}
-// from multibyte string
-wxString::wxString(const char *psz, const wxMBConv& conv, size_t nLength)
+int wxString::compare(size_t nStart, size_t nLen,
+ const wchar_t* sz, size_t nCount) const
{
- // anything to do?
- if ( psz && nLength != 0 )
- {
- if ( nLength == npos )
- {
- nLength = wxNO_LEN;
- }
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
- size_t nLenWide;
- wxWCharBuffer wbuf = conv.cMB2WC(psz, nLength, &nLenWide);
+ size_t pos, len;
+ PosLenToImpl(nStart, nLen, &pos, &len);
- if ( nLenWide )
- assign(wbuf, nLenWide);
- }
-}
+ SubstrBufFromWC str(ImplStr(sz, nCount));
+ if ( str.len == npos )
+ str.len = wxStringStrlen(str.data);
-//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);
+ return ::wxDoCmp(m_impl.data() + pos, len, str.data, str.len);
}
-#else // ANSI
+#endif // HAVE_STD_STRING_COMPARE/!HAVE_STD_STRING_COMPARE
-#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;
- }
+// ---------------------------------------------------------------------------
+// find_{first,last}_[not]_of functions
+// ---------------------------------------------------------------------------
- size_t nLenMB;
- wxCharBuffer buf = conv.cWC2MB(pwz, nLength, &nLenMB);
+#if !wxUSE_STL_BASED_WXSTRING || wxUSE_UNICODE_UTF8
- if ( nLenMB )
- assign(buf, nLenMB);
- }
-}
+// 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.
-//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_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
{
- return conv.cMB2WC(c_str(), length() + 1 /* size, not length */, NULL);
+ return find_first_of(sz, nStart, wxStrlen(sz));
}
-#endif // wxUSE_WCHAR_T
-
-#endif // Unicode/ANSI
-
-// shrink to minimal size (releasing extra memory)
-bool wxString::Shrink()
+size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
{
- wxString tmp(begin(), end());
- swap(tmp);
- return tmp.length() == length();
+ return find_first_not_of(sz, nStart, wxStrlen(sz));
}
-#if !wxUSE_STL
-// get the pointer to writable buffer of (at least) nLen bytes
-wxChar *wxString::GetWriteBuf(size_t nLen)
+size_t wxString::find_first_of(const wxChar* sz, size_t nStart, size_t n) const
{
- if ( !AllocBeforeWrite(nLen) ) {
- // allocation failure handled by caller
- return NULL;
- }
+ wxASSERT_MSG( nStart <= length(), _T("invalid index") );
- wxASSERT( GetStringData()->nRefs == 1 );
- GetStringData()->Validate(false);
-
- return m_pchData;
-}
+ size_t idx = nStart;
+ for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
+ {
+ if ( wxTmemchr(sz, *i, n) )
+ return idx;
+ }
-// put string back in a reasonable state after GetWriteBuf
-void wxString::UngetWriteBuf()
-{
- GetStringData()->nDataLength = wxStrlen(m_pchData);
- GetStringData()->Validate(true);
+ return npos;
}
-void wxString::UngetWriteBuf(size_t nLen)
+size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart, size_t n) const
{
- GetStringData()->nDataLength = nLen;
- GetStringData()->Validate(true);
-}
-#endif
-
-// ---------------------------------------------------------------------------
-// data access
-// ---------------------------------------------------------------------------
+ wxASSERT_MSG( nStart <= length(), _T("invalid index") );
-// all functions are inline in string.h
+ size_t idx = nStart;
+ for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
+ {
+ if ( !wxTmemchr(sz, *i, n) )
+ return idx;
+ }
-// ---------------------------------------------------------------------------
-// assignment operators
-// ---------------------------------------------------------------------------
+ return npos;
+}
-#if !wxUSE_UNICODE
-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
+size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
{
- *this = (const char *)psz;
- return *this;
+ return find_last_of(sz, nStart, wxStrlen(sz));
}
-#if wxUSE_WCHAR_T
-wxString& wxString::operator=(const wchar_t *pwz)
+size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
{
- wxString str(pwz);
- swap(str);
- return *this;
+ return find_last_not_of(sz, nStart, wxStrlen(sz));
}
-#endif
-
-#endif
-
-/*
- * concatenation functions come in 5 flavours:
- * string + string
- * char + string and string + char
- * C str + string and string + C str
- */
-wxString operator+(const wxString& str1, const wxString& str2)
+size_t wxString::find_last_of(const wxChar* sz, size_t nStart, size_t n) const
{
-#if !wxUSE_STL
- wxASSERT( str1.GetStringData()->IsValid() );
- wxASSERT( str2.GetStringData()->IsValid() );
-#endif
+ size_t len = length();
- wxString s = str1;
- s += str2;
+ if ( nStart == npos )
+ {
+ nStart = len - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ }
- return s;
+ 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 npos;
}
-wxString operator+(const wxString& str, wxChar ch)
+size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart, size_t n) const
{
-#if !wxUSE_STL
- wxASSERT( str.GetStringData()->IsValid() );
-#endif
+ size_t len = length();
- wxString s = str;
- s += ch;
+ if ( nStart == npos )
+ {
+ nStart = len - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ }
- return s;
+ 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 npos;
}
-wxString operator+(wxChar ch, const wxString& str)
+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 = ch;
- s += str;
+ 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+(const wxString& str, const wxChar *psz)
+size_t wxString::find_last_not_of(wxUniChar ch, size_t nStart) const
{
-#if !wxUSE_STL
- wxASSERT( str.GetStringData()->IsValid() );
-#endif
+ size_t len = length();
- wxString s;
- if ( !s.Alloc(wxStrlen(psz) + str.length()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ if ( nStart == npos )
+ {
+ nStart = len - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= len, _T("invalid index") );
}
- s += str;
- s += psz;
- return s;
+ size_t idx = nStart;
+ for ( const_reverse_iterator i = rbegin() + (len - nStart - 1);
+ i != rend(); --idx, ++i )
+ {
+ if ( *i != ch )
+ return idx;
+ }
+
+ 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.length()) ) {
- 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;
}
#endif
#endif
-wxString wxString::FromAscii(const char *ascii)
+wxString wxString::FromAscii(const char *ascii, size_t len)
{
- if (!ascii)
+ if (!ascii || len == 0)
return wxEmptyString;
- size_t len = strlen( ascii );
wxString res;
- if ( len )
{
- wxStringBuffer buf(res, len);
+ wxStringInternalBuffer buf(res, len);
+ wxStringCharType *dest = buf;
- wchar_t *dest = buf;
-
- for ( ;; )
+ for ( ; len > 0; --len )
{
- if ( (*dest++ = (wchar_t)(unsigned char)*ascii++) == L'\0' )
- break;
+ unsigned char c = (unsigned char)*ascii++;
+ wxASSERT_MSG( c < 0x80,
+ _T("Non-ASCII value passed to FromAscii().") );
+
+ *dest++ = (wchar_t)c;
}
}
return res;
}
+wxString wxString::FromAscii(const char *ascii)
+{
+ return FromAscii(ascii, wxStrlen(ascii));
+}
+
wxString wxString::FromAscii(const char ascii)
{
// What do we do with '\0' ?
- wxString res;
- res += (wchar_t)(unsigned char) ascii;
+ unsigned char c = (unsigned char)ascii;
- return res;
+ wxASSERT_MSG( c < 0x80, _T("Non-ASCII value passed to FromAscii().") );
+
+ // NB: the cast to wchar_t causes interpretation of 'ascii' as Latin1 value
+ return wxString(wxUniChar((wchar_t)c));
}
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 ( ;; )
+ for ( const_iterator i = begin(); i != end(); ++i )
{
- *dest++ = (char)(*pwc > SCHAR_MAX ? wxT('_') : *pwc);
+ wxUniChar c(*i);
+ // FIXME-UTF8: unify substituted char ('_') with wxUniChar ('?')
+ *dest++ = c.IsAscii() ? (char)c : '_';
// 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++ )
+ if ( !c )
break;
}
return buffer;
}
-#endif // Unicode
+#endif // wxUSE_UNICODE
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
// 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
+bool wxString::StartsWith(const wxString& prefix, wxString *rest) const
{
- wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
-
- // first check if the beginning of the string matches the prefix: note
- // that we don't have to check that we don't run out of this string as
- // when we reach the terminating NUL, either prefix string ends too (and
- // then it's ok) or we break out of the loop because there is no match
- const wxChar *p = c_str();
- while ( *prefix )
- {
- if ( *prefix++ != *p++ )
- {
- // no match
- return false;
- }
- }
+ if ( compare(0, prefix.length(), prefix) != 0 )
+ return false;
if ( rest )
{
// put the rest of the string into provided pointer
- *rest = p;
+ rest->assign(*this, prefix.length(), npos);
}
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
+bool wxString::EndsWith(const wxString& suffix, wxString *rest) const
{
- wxASSERT_MSG( suffix, _T("invalid parameter in wxString::EndssWith") );
+ int start = length() - suffix.length();
- int start = length() - wxStrlen(suffix);
- if ( start < 0 || wxStrcmp(c_str() + start, suffix) != 0 )
+ if ( start < 0 || compare(start, npos, suffix) != 0 )
return false;
if ( rest )
// 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 wxString& strOld,
+ const wxString& strNew, bool bReplaceAll)
{
// if we tried to replace an empty string we'd enter an infinite loop below
- wxCHECK_MSG( szOld && *szOld && szNew, 0,
+ wxCHECK_MSG( !strOld.empty(), 0,
_T("wxString::Replace(): invalid parameter") );
size_t uiCount = 0; // count of replacements made
- size_t uiOldLen = wxStrlen(szOld);
- size_t uiNewLen = wxStrlen(szNew);
+ size_t uiOldLen = strOld.length();
+ size_t uiNewLen = strNew.length();
size_t dwPos = 0;
- while ( this->c_str()[dwPos] != wxT('\0') )
+ while ( (*this)[dwPos] != wxT('\0') )
{
//DO NOT USE STRSTR HERE
//this string can contain embedded null characters,
//so strstr will function incorrectly
- dwPos = find(szOld, dwPos);
+ dwPos = find(strOld, 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);
+ replace(dwPos, uiOldLen, strNew, uiNewLen);
//move up pos past the string that was replaced
dwPos += uiNewLen;
bool wxString::IsAscii() const
{
- const wxChar *s = (const wxChar*) *this;
- while(*s){
- if(!isascii(*s)) return(false);
- s++;
- }
- return(true);
+ for ( const_iterator i = begin(); i != end(); ++i )
+ {
+ if ( !(*i).IsAscii() )
+ return false;
+ }
+
+ return true;
}
bool wxString::IsWord() const
{
- const wxChar *s = (const wxChar*) *this;
- while(*s){
- if(!wxIsalpha(*s)) return(false);
- s++;
- }
- return(true);
+ for ( const_iterator i = begin(); i != end(); ++i )
+ {
+ if ( !wxIsalpha(*i) )
+ return false;
+ }
+
+ return true;
}
bool wxString::IsNumber() const
{
- const wxChar *s = (const wxChar*) *this;
- if (wxStrlen(s))
- if ((s[0] == wxT('-')) || (s[0] == wxT('+'))) s++;
- while(*s){
- if(!wxIsdigit(*s)) return(false);
- s++;
- }
- return(true);
+ if ( empty() )
+ return true;
+
+ const_iterator i = begin();
+
+ if ( *i == _T('-') || *i == _T('+') )
+ ++i;
+
+ for ( ; i != end(); ++i )
+ {
+ if ( !wxIsdigit(*i) )
+ return false;
+ }
+
+ return true;
}
wxString wxString::Strip(stripType w) const
reverse_iterator psz = rbegin();
while ( (psz != rend()) && wxSafeIsspace(*psz) )
psz++;
-
+
// truncate at trailing space start
erase(psz.base(), end());
}
}
// 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);
// ---------------------------------------------------------------------------
// 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);
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);
-
- return (idx == npos) ? wxNOT_FOUND : (int)idx;
-}
-
// ----------------------------------------------------------------------------
// conversion to numbers
// ----------------------------------------------------------------------------
-// the implementation of all the functions below is exactly the same so factor
-// it out
-#ifndef __WATCOMC__
+// The implementation of all the functions below is exactly the same so factor
+// it out. Note that number extraction works correctly on UTF-8 strings, so
+// we can use wxStringCharType and wx_str() for maximum efficiency.
-template <typename T>
-bool wxStringToIntType(const wxChar *start,
- T *val,
- int base,
- T (*func)(const wxChar *, wxChar **, int))
-{
- wxCHECK_MSG( val, false, _T("NULL output pointer") );
- wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
-
- errno = 0;
-
- wxChar *end;
- *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 and no under/overflow occurred
- return !*end && (end != start) && (errno != ERANGE);
-}
-
-#define wxSTR2INT(val, b, func) return wxStringToIntType(c_str(), val, b, func)
-
-#else // __WATCOMC__
-
-// FIXME, TODO, ASAP !!! - ugly trick to make release for Open Watcom possible
-// without changing code flow for other compilers
-
-#define wxSTR2INT(val, base, func) \
- wxCHECK_MSG( val, false, _T("NULL output pointer") ); \
- wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") ); \
- \
- errno = 0; \
- \
- wxChar *end; \
- *val = (*func)(c_str(), &end, base); \
- \
- return !*end && (end != c_str()) && (errno != ERANGE)
+#ifndef __WXWINCE__
+ #define DO_IF_NOT_WINCE(x) x
+#else
+ #define DO_IF_NOT_WINCE(x)
+#endif
-#endif // !__WATCOMC__/__WATCOMC__
+#define WX_STRING_TO_INT_TYPE(val, base, func) \
+ wxCHECK_MSG( val, false, _T("NULL output pointer") ); \
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") ); \
+ \
+ DO_IF_NOT_WINCE( errno = 0; ) \
+ \
+ const wxStringCharType *start = wx_str(); \
+ wxStringCharType *end; \
+ *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 and no under/overflow */ \
+ /* occurred: */ \
+ return !*end && (end != start) \
+ DO_IF_NOT_WINCE( && (errno != ERANGE) )
bool wxString::ToLong(long *val, int base) const
{
- wxSTR2INT(val, base, wxStrtol);
+ WX_STRING_TO_INT_TYPE(val, base, wxStrtol);
}
bool wxString::ToULong(unsigned long *val, int base) const
{
- wxSTR2INT(val, base, wxStrtoul);
+ WX_STRING_TO_INT_TYPE(val, base, wxStrtoul);
}
bool wxString::ToLongLong(wxLongLong_t *val, int base) const
{
-#ifdef wxHAS_STRTOLL
- wxSTR2INT(val, base, wxStrtoll);
-#else
- // TODO: implement this ourselves
- wxUnusedVar(val);
- wxUnusedVar(base);
- return false;
-#endif // wxHAS_STRTOLL
+ WX_STRING_TO_INT_TYPE(val, base, wxStrtoll);
}
bool wxString::ToULongLong(wxULongLong_t *val, int base) const
{
-#ifdef wxHAS_STRTOLL
- wxSTR2INT(val, base, wxStrtoull);
-#else
- // TODO: implement this ourselves
- wxUnusedVar(val);
- wxUnusedVar(base);
- return false;
-#endif
+ WX_STRING_TO_INT_TYPE(val, base, wxStrtoull);
}
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;
// return true only if scan was stopped by the terminating NUL and if the
// string was not empty to start with and no under/overflow occurred
- return !*end && (end != start) && (errno != ERANGE);
+ return !*end && (end != start)
+#ifndef __WXWINCE__
+ && (errno != ERANGE)
+#endif
+ ;
}
// ---------------------------------------------------------------------------
// formatted output
// ---------------------------------------------------------------------------
+#if !wxUSE_UTF8_LOCALE_ONLY
+/* static */
+#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
+wxString wxStringPrintfMixinBase::DoFormatWchar(const wxChar *format, ...)
+#else
+wxString wxString::DoFormatWchar(const wxChar *format, ...)
+#endif
+{
+ va_list argptr;
+ va_start(argptr, format);
+
+ wxString s;
+ s.PrintfV(format, argptr);
+
+ va_end(argptr);
+
+ return s;
+}
+#endif // !wxUSE_UTF8_LOCALE_ONLY
+
+#if wxUSE_UNICODE_UTF8
/* static */
-wxString wxString::Format(const wxChar *pszFormat, ...)
+wxString wxString::DoFormatUtf8(const char *format, ...)
{
va_list argptr;
- va_start(argptr, pszFormat);
+ va_start(argptr, format);
wxString s;
- s.PrintfV(pszFormat, argptr);
+ s.PrintfV(format, argptr);
va_end(argptr);
return s;
}
+#endif // wxUSE_UNICODE_UTF8
/* 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, ...)
+#if !wxUSE_UTF8_LOCALE_ONLY
+#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
+int wxStringPrintfMixinBase::DoPrintfWchar(const wxChar *format, ...)
+#else
+int wxString::DoPrintfWchar(const wxChar *format, ...)
+#endif
+{
+ 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 = str->PrintfV(format, argptr);
+
+ va_end(argptr);
+
+ return iLen;
+}
+#endif // !wxUSE_UTF8_LOCALE_ONLY
+
+#if wxUSE_UNICODE_UTF8
+int wxString::DoPrintfUtf8(const char *format, ...)
{
va_list argptr;
- va_start(argptr, pszFormat);
+ va_start(argptr, format);
- int iLen = PrintfV(pszFormat, argptr);
+ int iLen = PrintfV(format, argptr);
va_end(argptr);
return iLen;
}
+#endif // wxUSE_UNICODE_UTF8
-int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
+#if wxUSE_UNICODE_UTF8
+template<typename BufferType>
+#else
+// we only need one version in non-UTF8 builds and at least two Windows
+// compilers have problems with this function template, so use just one
+// normal function here
+#endif
+static int DoStringPrintfV(wxString& str,
+ const wxString& format, va_list argptr)
{
int size = 1024;
for ( ;; )
{
- wxStringBuffer tmp(*this, size + 1);
+#if wxUSE_UNICODE_UTF8
+ BufferType tmp(str, size + 1);
+ typename BufferType::CharType *buf = tmp;
+#else
+ wxStringBuffer tmp(str, size + 1);
wxChar *buf = tmp;
+#endif
if ( !buf )
{
// out of memory
+
+ // in UTF-8 build, leaving uninitialized junk in the buffer
+ // could result in invalid non-empty UTF-8 string, so just
+ // reset the string to empty on failure:
+ buf[0] = '\0';
return -1;
}
// only a copy
va_list argptrcopy;
wxVaCopy(argptrcopy, argptr);
- int len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
+ int len = wxVsnprintf(buf, size, format, argptrcopy);
va_end(argptrcopy);
// some implementations of vsnprintf() don't NUL terminate
// 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
+ // NB: wxVsnprintf() may call either wxCRT_VsnprintfW or
+ // wxCRT_VsnprintfA in UTF-8 build; wxUSE_WXVSNPRINTF
+ // is true if *both* of them use our own implementation,
+ // otherwise we can't be sure
+#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
+ buf[0] = '\0';
+ return -1;
+#else // possibly using system version
+ // assume it only returns error if there is not enough space, but
+ // 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
{
}
// we could have overshot
- Shrink();
+ str.Shrink();
+
+ return str.length();
+}
+
+int wxString::PrintfV(const wxString& format, va_list argptr)
+{
+#if wxUSE_UNICODE_UTF8
+ #if wxUSE_STL_BASED_WXSTRING
+ typedef wxStringTypeBuffer<char> Utf8Buffer;
+ #else
+ typedef wxStringInternalBuffer Utf8Buffer;
+ #endif
+#endif
- return length();
+#if wxUSE_UTF8_LOCALE_ONLY
+ return DoStringPrintfV<Utf8Buffer>(*this, format, argptr);
+#else
+ #if wxUSE_UNICODE_UTF8
+ if ( wxLocaleIsUtf8 )
+ return DoStringPrintfV<Utf8Buffer>(*this, format, argptr);
+ else
+ // wxChar* version
+ return DoStringPrintfV<wxStringBuffer>(*this, format, argptr);
+ #else
+ return DoStringPrintfV(*this, format, argptr);
+ #endif // UTF8/WCHAR
+#endif
}
// ----------------------------------------------------------------------------
// 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
+bool wxString::Matches(const wxString& mask) const
{
// I disable this code as it doesn't seem to be faster (in fact, it seems
// to be much slower) than the old, hand-written code below and using it
#else // !wxUSE_REGEX
// TODO: this is, of course, awfully inefficient...
+ // FIXME-UTF8: implement using iterators, remove #if
+#if wxUSE_UNICODE_UTF8
+ wxWCharBuffer maskBuf = mask.wc_str();
+ wxWCharBuffer txtBuf = wc_str();
+ const wxChar *pszMask = maskBuf.data();
+ const wxChar *pszTxt = txtBuf.data();
+#else
+ const wxChar *pszMask = mask.wx_str();
// the char currently being checked
- const wxChar *pszTxt = c_str();
+ const wxChar *pszTxt = wx_str();
+#endif
// the last location where '*' matched
const wxChar *pszLastStarInText = NULL;
}
// Count the number of chars
-int wxString::Freq(wxChar ch) const
+int wxString::Freq(wxUniChar ch) const
{
int count = 0;
- int len = length();
- 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"
-
-wxArrayString::wxArrayString(size_t sz, const wxChar** a)
-{
-#if !wxUSE_STL
- Init(false);
-#endif
- for (size_t i=0; i < sz; i++)
- Add(a[i]);
-}
-
-wxArrayString::wxArrayString(size_t sz, const wxString* a)
-{
-#if !wxUSE_STL
- Init(false);
-#endif
- for (size_t i=0; i < sz; i++)
- Add(a[i]);
-}
-
-#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
+// wxUTF8StringBuffer
// ----------------------------------------------------------------------------
-// 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;
-#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)
-{
- wxCRIT_SECT_LOCKER(lockCmpFunc, gs_critsectStringSort);
-
- 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;
-}
-
-extern "C"
-{
- 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()
+#if wxUSE_UNICODE_WCHAR
+wxUTF8StringBuffer::~wxUTF8StringBuffer()
{
- wxCHECK_RET( !m_autoSort, wxT("can't use this method with sorted arrays") );
+ wxMBConvStrictUTF8 conv;
+ size_t wlen = conv.ToWChar(NULL, 0, m_buf);
+ wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
- // 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);
+ wxStringInternalBuffer wbuf(m_str, wlen);
+ conv.ToWChar(wbuf, wlen, m_buf);
}
-bool wxArrayString::operator==(const wxArrayString& a) const
+wxUTF8StringBufferLength::~wxUTF8StringBufferLength()
{
- 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;
-}
+ wxCHECK_RET(m_lenSet, "length not set");
-#endif // !wxUSE_STL
+ wxMBConvStrictUTF8 conv;
+ size_t wlen = conv.ToWChar(NULL, 0, m_buf, m_len);
+ wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
-int wxCMPFUNC_CONV wxStringSortAscending(wxString* s1, wxString* s2)
-{
- return s1->Cmp(*s2);
-}
-
-int wxCMPFUNC_CONV wxStringSortDescending(wxString* s1, wxString* s2)
-{
- return -s1->Cmp(*s2);
+ wxStringInternalBufferLength wbuf(m_str, wlen);
+ conv.ToWChar(wbuf, wlen, m_buf, m_len);
+ wbuf.SetLength(wlen);
}
+#endif // wxUSE_UNICODE_WCHAR
projects / wxWidgets.git / blobdiff