// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "string.h"
#endif
#include <clib.h>
#endif
-#ifdef WXSTRING_IS_WXOBJECT
- IMPLEMENT_DYNAMIC_CLASS(wxString, wxObject)
-#endif //WXSTRING_IS_WXOBJECT
-
-#if wxUSE_UNICODE
-#undef wxUSE_EXPERIMENTAL_PRINTF
-#define wxUSE_EXPERIMENTAL_PRINTF 1
-#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!
const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
#endif // Visual Age
-#ifdef wxSTD_STRING_COMPATIBILITY
- const size_t wxString::npos = wxSTRING_MAXLEN;
-#endif // wxSTD_STRING_COMPATIBILITY
+#if !wxUSE_STL
+ const size_t wxStringBase::npos = wxSTRING_MAXLEN;
+#endif
// ----------------------------------------------------------------------------
// static data
// ----------------------------------------------------------------------------
+#if wxUSE_STL
+
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = _T("");
+
+#else
+
// for an empty string, GetStringData() will return this address: this
// structure has the same layout as wxStringData and it's data() method will
// return the empty string (dummy pointer)
} g_strEmpty = { {-1, 0, 0}, wxT('\0') };
// empty C style string: points to 'string data' byte of g_strEmpty
-extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
-
-// ----------------------------------------------------------------------------
-// conditional compilation
-// ----------------------------------------------------------------------------
+extern const wxChar WXDLLIMPEXP_BASE *wxEmptyString = &g_strEmpty.dummy;
-#if !defined(__WXSW__) && wxUSE_UNICODE
- #ifdef wxUSE_EXPERIMENTAL_PRINTF
- #undef wxUSE_EXPERIMENTAL_PRINTF
- #endif
- #define wxUSE_EXPERIMENTAL_PRINTF 1
-#endif
-
-// we want to find out if the current platform supports vsnprintf()-like
-// function: for Unix this is done with configure, for Windows we test the
-// compiler explicitly.
-//
-// FIXME currently, this is only for ANSI (!Unicode) strings, so we call this
-// function wxVsnprintfA (A for ANSI), should also find one for Unicode
-// strings in Unicode build
-#ifdef __WXMSW__
- #if defined(__VISUALC__) || (defined(__MINGW32__) && wxUSE_NORLANDER_HEADERS)
- #define wxVsnprintfA _vsnprintf
- #endif
-#elif defined(__WXMAC__)
- #define wxVsnprintfA vsnprintf
-#else // !Windows
- #ifdef HAVE_VSNPRINTF
- #define wxVsnprintfA vsnprintf
- #endif
-#endif // Windows/!Windows
-
-#ifndef wxVsnprintfA
- // in this case we'll use vsprintf() (which is ANSI and thus should be
- // always available), but it's unsafe because it doesn't check for buffer
- // size - so give a warning
- #define wxVsnprintfA(buf, len, format, arg) vsprintf(buf, format, arg)
-
- #if defined(__VISUALC__)
- #pragma message("Using sprintf() because no snprintf()-like function defined")
- #elif defined(__GNUG__)
- #warning "Using sprintf() because no snprintf()-like function defined"
- #endif //compiler
-#endif // no vsnprintf
-
-#if defined(_AIX)
- // AIX has vsnprintf, but there's no prototype in the system headers.
- extern "C" int vsnprintf(char* str, size_t n, const char* format, va_list ap);
#endif
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
-#if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
+#if wxUSE_STD_IOSTREAM
// MS Visual C++ version 5.0 provides the new STL headers as well as the old
// iostream ones.
//
// ATTN: you can _not_ use both of these in the same program!
+#include <iostream>
+
wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
{
#if 0
return os;
}
-#endif //std::string compatibility
-
-extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
- const wxChar *format, va_list argptr)
-{
-#if wxUSE_UNICODE
- // FIXME should use wvsnprintf() or whatever if it's available
- wxString s;
- int iLen = s.PrintfV(format, argptr);
- if ( iLen != -1 )
- {
- wxStrncpy(buf, s.c_str(), len);
- buf[len-1] = wxT('\0');
- }
-
- return iLen;
-#else // ANSI
- // vsnprintf() will not terminate the string with '\0' if there is not
- // enough place, but we want the string to always be NUL terminated
- int rc = wxVsnprintfA(buf, len - 1, format, argptr);
- if ( rc == -1 )
- {
- buf[len] = 0;
- }
-
- return rc;
-#endif // Unicode/ANSI
-}
-
-extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
- const wxChar *format, ...)
-{
- va_list argptr;
- va_start(argptr, format);
-
- int iLen = wxVsnprintf(buf, len, format, argptr);
-
- va_end(argptr);
-
- return iLen;
-}
+#endif // wxUSE_STD_IOSTREAM
// ----------------------------------------------------------------------------
// private classes
class Averager
{
public:
- Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
+ Averager(const wxChar *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
~Averager()
- { printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
+ { wxPrintf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
void Add(size_t n) { m_nTotal += n; m_nCount++; }
private:
size_t m_nCount, m_nTotal;
- const char *m_sz;
+ const wxChar *m_sz;
} g_averageLength("allocation size"),
g_averageSummandLength("summand length"),
g_averageConcatHit("hit probability in concat"),
#define STATISTICS_ADD(av, val)
#endif // WXSTRING_STATISTICS
+#if !wxUSE_STL
+
// ===========================================================================
-// wxString class core
+// wxStringData class deallocation
// ===========================================================================
-// ---------------------------------------------------------------------------
-// construction
-// ---------------------------------------------------------------------------
-
-// constructs string of <nLength> copies of character <ch>
-wxString::wxString(wxChar ch, size_t nLength)
+#if defined(__VISUALC__) && defined(_MT) && !defined(_DLL)
+# pragma message (__FILE__ ": building with Multithreaded non DLL runtime has a performance impact on wxString!")
+void wxStringData::Free()
{
- Init();
-
- if ( nLength > 0 ) {
- AllocBuffer(nLength);
-
-#if wxUSE_UNICODE
- // memset only works on char
- for (size_t n=0; n<nLength; n++) m_pchData[n] = ch;
-#else
- memset(m_pchData, ch, nLength);
-#endif
- }
+ free(this);
}
+#endif
+
+// ===========================================================================
+// wxStringBase
+// ===========================================================================
// takes nLength elements of psz starting at nPos
-void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
+void wxStringBase::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
{
Init();
// if the length is not given, assume the string to be NUL terminated
- if ( nLength == wxSTRING_MAXLEN ) {
+ if ( nLength == npos ) {
wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
nLength = wxStrlen(psz + nPos);
if ( nLength > 0 ) {
// trailing '\0' is written in AllocBuffer()
- AllocBuffer(nLength);
+ if ( !AllocBuffer(nLength) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") );
+ return;
+ }
memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
}
}
-#ifdef wxSTD_STRING_COMPATIBILITY
-
// poor man's iterators are "void *" pointers
-wxString::wxString(const void *pStart, const void *pEnd)
+wxStringBase::wxStringBase(const void *pStart, const void *pEnd)
{
InitWith((const wxChar *)pStart, 0,
(const wxChar *)pEnd - (const wxChar *)pStart);
}
-#endif //std::string compatibility
-
-#if wxUSE_UNICODE
-
-// from multibyte string
-wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
-{
- // first get necessary size
- size_t nLen = psz ? conv.MB2WC((wchar_t *) NULL, psz, 0) : 0;
-
- // nLength is number of *Unicode* characters here!
- if ((nLen != (size_t)-1) && (nLen > nLength))
- nLen = nLength;
-
- // empty?
- if ( (nLen != 0) && (nLen != (size_t)-1) ) {
- AllocBuffer(nLen);
- conv.MB2WC(m_pchData, psz, nLen);
- }
- else {
- Init();
- }
-}
-
-#else // ANSI
-
-#if wxUSE_WCHAR_T
-// from wide string
-wxString::wxString(const wchar_t *pwz, wxMBConv& conv)
+wxStringBase::wxStringBase(size_type n, wxChar ch)
{
- // first get necessary size
- size_t nLen = pwz ? conv.WC2MB((char *) NULL, pwz, 0) : 0;
-
- // empty?
- if ( (nLen != 0) && (nLen != (size_t)-1) ) {
- AllocBuffer(nLen);
- conv.WC2MB(m_pchData, pwz, nLen);
- }
- else {
- Init();
- }
+ Init();
+ append(n, ch);
}
-#endif // wxUSE_WCHAR_T
-
-#endif // Unicode/ANSI
// ---------------------------------------------------------------------------
// memory allocation
// ---------------------------------------------------------------------------
// allocates memory needed to store a C string of length nLen
-void wxString::AllocBuffer(size_t nLen)
+bool wxStringBase::AllocBuffer(size_t nLen)
{
// allocating 0 sized buffer doesn't make sense, all empty strings should
// reuse g_strEmpty
// 2) sizeof(wxStringData) for housekeeping info
wxStringData* pData = (wxStringData*)
malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(wxChar));
+
+ if ( pData == NULL ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
+
pData->nRefs = 1;
pData->nDataLength = nLen;
pData->nAllocLength = nLen + EXTRA_ALLOC;
m_pchData = pData->data(); // data starts after wxStringData
m_pchData[nLen] = wxT('\0');
+ return TRUE;
}
// must be called before changing this string
-void wxString::CopyBeforeWrite()
+bool wxStringBase::CopyBeforeWrite()
{
wxStringData* pData = GetStringData();
if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
size_t nLen = pData->nDataLength;
- AllocBuffer(nLen);
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
memcpy(m_pchData, pData->data(), nLen*sizeof(wxChar));
}
wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+
+ return TRUE;
}
// must be called before replacing contents of this string
-void wxString::AllocBeforeWrite(size_t nLen)
+bool wxStringBase::AllocBeforeWrite(size_t nLen)
{
wxASSERT( nLen != 0 ); // doesn't make any sense
if ( pData->IsShared() || pData->IsEmpty() ) {
// can't work with old buffer, get new one
pData->Unlock();
- AllocBuffer(nLen);
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
}
else {
if ( nLen > pData->nAllocLength ) {
nLen += EXTRA_ALLOC;
- wxStringData *pDataOld = pData;
pData = (wxStringData*)
realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
- if ( !pData ) {
- // out of memory
- free(pDataOld);
- // FIXME we're going to crash...
- return;
+ if ( pData == NULL ) {
+ // allocation failures are handled by the caller
+ // keep previous data since reallocation failed
+ return FALSE;
}
pData->nAllocLength = nLen;
}
wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+
+ return TRUE;
+}
+
+wxStringBase& wxStringBase::append(size_t n, wxChar ch)
+{
+ size_type len = length();
+
+ if ( !CopyBeforeWrite() || !Alloc(len + n) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::append") );
+ }
+ GetStringData()->nDataLength = len + n;
+ m_pchData[len + n] = '\0';
+ for ( size_t i = 0; i < n; ++i )
+ m_pchData[len + i] = ch;
+ return *this;
+}
+
+void wxStringBase::resize(size_t nSize, wxChar ch)
+{
+ size_t len = length();
+
+ if ( nSize < len )
+ {
+ erase(begin() + nSize, end());
+ }
+ else if ( nSize > len )
+ {
+ append(nSize - len, ch);
+ }
+ //else: we have exactly the specified length, nothing to do
}
// allocate enough memory for nLen characters
-void wxString::Alloc(size_t nLen)
+bool wxStringBase::Alloc(size_t nLen)
{
wxStringData *pData = GetStringData();
if ( pData->nAllocLength <= nLen ) {
nLen += EXTRA_ALLOC;
wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+ if ( pData == NULL ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+
pData->nRefs = 1;
pData->nDataLength = 0;
pData->nAllocLength = nLen;
else if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
size_t nOldLen = pData->nDataLength;
- AllocBuffer(nLen);
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
}
else {
nLen += EXTRA_ALLOC;
- wxStringData *pDataOld = pData;
- wxStringData *p = (wxStringData *)
+ pData = (wxStringData *)
realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
- if ( p == NULL ) {
- // don't leak memory
- free(pDataOld);
-
- // FIXME what to do on memory error?
- return;
+ if ( pData == NULL ) {
+ // allocation failure handled by caller
+ // keep previous data since reallocation failed
+ return FALSE;
}
// it's not important if the pointer changed or not (the check for this
// is not faster than assigning to m_pchData in all cases)
- p->nAllocLength = nLen;
- m_pchData = p->data();
+ pData->nAllocLength = nLen;
+ m_pchData = pData->data();
}
}
//else: we've already got enough
+ return TRUE;
}
-// shrink to minimal size (releasing extra memory)
-void wxString::Shrink()
+wxStringBase::iterator wxStringBase::erase(iterator it)
{
- wxStringData *pData = GetStringData();
+ size_type idx = it - begin();
+ erase(idx, 1);
+ return begin() + idx;
+}
- size_t nLen = pData->nDataLength;
- void *p = realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+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);
- wxASSERT_MSG( p != NULL, _T("can't free memory?") );
+ swap(strTmp);
+ return *this;
+}
- if ( p != pData )
- {
- // contrary to what one might believe, some realloc() implementation do
- // move the memory block even when its size is reduced
- pData = (wxStringData *)p;
+wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
+{
+ wxASSERT( nPos <= length() );
- m_pchData = pData->data();
+ if ( n == npos ) n = wxStrlen(sz);
+ if ( n == 0 ) return *this;
+
+ if ( !CopyBeforeWrite() || !Alloc(length() + n) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
}
- pData->nAllocLength = nLen;
+ 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;
}
-// get the pointer to writable buffer of (at least) nLen bytes
-wxChar *wxString::GetWriteBuf(size_t nLen)
+void wxStringBase::swap(wxStringBase& str)
{
- AllocBeforeWrite(nLen);
+ wxChar* tmp = str.m_pchData;
+ str.m_pchData = m_pchData;
+ m_pchData = tmp;
+}
- wxASSERT( GetStringData()->nRefs == 1 );
- GetStringData()->Validate(FALSE);
+size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
+{
+ wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT( nStart <= length() );
- return m_pchData;
+ const wxChar *p = wxStrstr(c_str() + nStart, str.c_str());
+
+ return p == NULL ? npos : p - c_str();
}
-// put string back in a reasonable state after GetWriteBuf
-void wxString::UngetWriteBuf()
+size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
{
- GetStringData()->nDataLength = wxStrlen(m_pchData);
- GetStringData()->Validate(TRUE);
+ return find(wxStringBase(sz, n), nStart);
}
-void wxString::UngetWriteBuf(size_t nLen)
+size_t wxStringBase::find(wxChar ch, size_t nStart) const
{
- GetStringData()->nDataLength = nLen;
- GetStringData()->Validate(TRUE);
+ wxASSERT( nStart <= length() );
+
+ const wxChar *p = wxStrchr(c_str() + nStart, ch);
+
+ return p == NULL ? npos : p - c_str();
}
-// ---------------------------------------------------------------------------
-// data access
-// ---------------------------------------------------------------------------
+size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
+{
+ wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT( nStart == npos || nStart <= length() );
-// all functions are inline in string.h
+ if ( length() >= str.length() )
+ {
+ // avoids a corner case later
+ if ( length() == 0 && str.length() == 0 )
+ return 0;
-// ---------------------------------------------------------------------------
-// assignment operators
-// ---------------------------------------------------------------------------
+ // "top" is the point where search starts from
+ size_t top = length() - str.length();
-// helper function: does real copy
-void wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+ if ( nStart == npos )
+ nStart = length() - 1;
+ if ( nStart < top )
+ top = nStart;
+
+ const wxChar *cursor = c_str() + top;
+ do
+ {
+ if ( memcmp(cursor, str.c_str(),
+ str.length() * sizeof(wxChar)) == 0 )
+ {
+ return cursor - c_str();
+ }
+ } while ( cursor-- > c_str() );
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::rfind(const wxChar* sz, size_t nStart, size_t n) const
{
- if ( nSrcLen == 0 ) {
- Reinit();
- }
- else {
- AllocBeforeWrite(nSrcLen);
- memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
- GetStringData()->nDataLength = nSrcLen;
- m_pchData[nSrcLen] = wxT('\0');
- }
+ return rfind(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::rfind(wxChar ch, size_t nStart) 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;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const
+{
+ const wxChar *start = c_str() + nStart;
+ const wxChar *firstOf = wxStrpbrk(start, sz);
+ if ( firstOf )
+ return firstOf - c_str();
+ else
+ return npos;
+}
+
+size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_first_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT_MSG( nStart <= length(),
+ _T("invalid index in find_last_of()") );
+ }
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( wxStrchr(sz, *p) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_last_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length();
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ size_t nAccept = wxStrspn(c_str() + nStart, sz);
+ if ( nAccept >= length() - nStart )
+ return npos;
+ else
+ return nStart + nAccept;
+}
+
+size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_first_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_first_not_of(wxChar ch, size_t nStart) const
+{
+ wxASSERT( nStart <= length() );
+
+ for ( const wxChar *p = c_str() + nStart; *p; p++ )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( !wxStrchr(sz, *p) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart,
+ size_t n) const
+{
+ return find_last_not_of(wxStringBase(sz, n), nStart);
+}
+
+size_t wxStringBase::find_last_not_of(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = length() - 1;
+ }
+ else
+ {
+ wxASSERT( nStart <= length() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxChar *sz)
+{
+ wxASSERT_MSG( nStart <= length(),
+ _T("index out of bounds in wxStringBase::replace") );
+ size_t strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+
+ wxStringBase strTmp;
+ strTmp.reserve(length()); // micro optimisation to avoid multiple mem allocs
+
+ 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(ch, nCount).c_str());
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxStringBase& str,
+ size_t nStart2, size_t nLen2)
+{
+ return replace(nStart, nLen, str.substr(nStart2, nLen2));
+}
+
+wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount)
+{
+ return replace(nStart, nLen, wxStringBase(sz, nCount).c_str());
+}
+
+wxStringBase wxStringBase::substr(size_t nStart, size_t nLen) const
+{
+ if ( nLen == npos )
+ nLen = length() - nStart;
+ return wxStringBase(*this, nStart, nLen);
}
// assigns one string to another
-wxString& wxString::operator=(const wxString& stringSrc)
+wxStringBase& wxStringBase::operator=(const wxStringBase& stringSrc)
{
wxASSERT( stringSrc.GetStringData()->IsValid() );
}
// assigns a single character
-wxString& wxString::operator=(wxChar ch)
+wxStringBase& wxStringBase::operator=(wxChar ch)
{
- AssignCopy(1, &ch);
+ if ( !AssignCopy(1, &ch) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(wxChar)") );
+ }
return *this;
}
-
// assigns C string
-wxString& wxString::operator=(const wxChar *psz)
-{
- AssignCopy(wxStrlen(psz), psz);
- return *this;
-}
-
-#if !wxUSE_UNICODE
-
-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
+wxStringBase& wxStringBase::operator=(const wxChar *psz)
{
- *this = (const char *)psz;
+ if ( !AssignCopy(wxStrlen(psz), psz) ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::operator=(const wxChar *)") );
+ }
return *this;
}
-#if wxUSE_WCHAR_T
-wxString& wxString::operator=(const wchar_t *pwz)
+// helper function: does real copy
+bool wxStringBase::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
{
- wxString str(pwz);
- *this = str;
- return *this;
+ 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;
}
-#endif
-
-#endif
// ---------------------------------------------------------------------------
// string concatenation
// ---------------------------------------------------------------------------
// add something to this string
-void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
+bool wxStringBase::ConcatSelf(size_t nSrcLen, const wxChar *pszSrcData,
+ size_t nMaxLen)
{
STATISTICS_ADD(SummandLength, nSrcLen);
+ nSrcLen = nSrcLen < nMaxLen ? nSrcLen : nMaxLen;
+
// concatenating an empty string is a NOP
if ( nSrcLen > 0 ) {
wxStringData *pData = GetStringData();
// we have to allocate another buffer
wxStringData* pOldData = GetStringData();
- AllocBuffer(nNewLen);
+ if ( !AllocBuffer(nNewLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
pOldData->Unlock();
}
else if ( nNewLen > pData->nAllocLength ) {
STATISTICS_ADD(ConcatHit, 0);
+ reserve(nNewLen);
// we have to grow the buffer
- Alloc(nNewLen);
+ if ( capacity() < nNewLen ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
}
else {
STATISTICS_ADD(ConcatHit, 1);
GetStringData()->nDataLength = nNewLen; // and fix the length
}
//else: the string to append was empty
+ return TRUE;
+}
+
+// ---------------------------------------------------------------------------
+// simple sub-string extraction
+// ---------------------------------------------------------------------------
+
+// helper function: clone the data attached to this string
+bool wxStringBase::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+{
+ if ( nCopyLen == 0 ) {
+ dest.Init();
+ }
+ else {
+ if ( !dest.AllocBuffer(nCopyLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
+ memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
+ }
+ return TRUE;
+}
+
+#endif // !wxUSE_STL
+
+#if !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+#if !wxUSE_STL
+ #define STRINGCLASS wxStringBase
+#else
+ #define STRINGCLASS wxString
+#endif
+
+static inline int wxDoCmp(const wxChar* s1, size_t l1,
+ const wxChar* s2, size_t l2)
+{
+ if( l1 == l2 )
+ return wxStrncmp(s1, s2, l1);
+ else if( l1 < l2 )
+ {
+ int ret = wxStrncmp(s1, s2, l1);
+ return ret == 0 ? -1 : ret;
+ }
+ else if( l1 > l2 )
+ {
+ int ret = wxStrncmp(s1, s2, l2);
+ return ret == 0 ? +1 : ret;
+ }
+
+ wxFAIL; // must never get there
+ return 0; // quiet compilers
+}
+
+#if wxUSE_STL
+
+int STRINGCLASS::compare(const wxStringBase& str) const
+{
+ return ::wxDoCmp(data(), length(), str.data(), str.length());
+}
+
+#endif
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxStringBase& str) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+ return ::wxDoCmp(data() + nStart, nLen, str.data(), str.length());
+}
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxStringBase& str,
+ size_t nStart2, size_t nLen2) const
+{
+ wxASSERT(nStart <= length());
+ wxASSERT(nStart2 <= str.length());
+ size_type strLen = length() - nStart,
+ strLen2 = str.length() - nStart2;
+ nLen = strLen < nLen ? strLen : nLen;
+ nLen2 = strLen2 < nLen2 ? strLen2 : nLen2;
+ return ::wxDoCmp(data() + nStart, nLen, str.data() + nStart2, nLen2);
+}
+
+#if wxUSE_STL
+
+int STRINGCLASS::compare(const wxChar* sz) const
+{
+ size_t nLen = wxStrlen(sz);
+ return ::wxDoCmp(data(), length(), sz, nLen);
+}
+
+#endif
+
+int STRINGCLASS::compare(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount) const
+{
+ wxASSERT(nStart <= length());
+ size_type strLen = length() - nStart;
+ nLen = strLen < nLen ? strLen : nLen;
+ if( nCount == npos )
+ nCount = wxStrlen(sz);
+
+ return ::wxDoCmp(data() + nStart, nLen, sz, nCount);
+}
+
+#undef STRINGCLASS
+
+#endif // !wxUSE_STL || !defined(HAVE_STD_STRING_COMPARE)
+
+// ===========================================================================
+// wxString class core
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// construction
+// ---------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+
+// from multibyte string
+wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
+{
+ // first get the size of the buffer we need
+ size_t nLen;
+ if ( psz )
+ {
+ // calculate the needed size ourselves or use the provided one
+ nLen = nLength == npos ? conv.MB2WC(NULL, psz, 0) : nLength;
+ }
+ else
+ {
+ // nothing to convert
+ nLen = 0;
+ }
+
+ // anything to do?
+ if ( (nLen != 0) && (nLen != (size_t)-1) )
+ {
+ if ( !Alloc(nLen) )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ }
+ else
+ {
+ wxWCharBuffer buf(nLen + 1);
+ // MB2WC wants the buffer size, not the string length hence +1
+ nLen = conv.MB2WC(buf.data(), psz, nLen + 1);
+
+ if ( nLen != (size_t)-1 )
+ {
+ // initialized ok, set the real length as nLength specified by
+ // the caller could be greater than the real string length
+ assign(buf.data(), nLen);
+ return;
+ }
+ //else: the conversion failed -- leave the string empty (what else?)
+ }
+ }
+}
+
+#else // ANSI
+
+#if wxUSE_WCHAR_T
+// from wide string
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
+{
+ // first get the size of the buffer we need
+ size_t nLen;
+ if ( pwz )
+ {
+ // calculate the needed size ourselves or use the provided one
+ nLen = nLength == npos ? conv.WC2MB(NULL, pwz, 0) : nLength;
+ }
+ else
+ {
+ // nothing to convert
+ nLen = 0;
+ }
+
+ // anything to do?
+ if ( (nLen != 0) && (nLen != (size_t)-1) )
+ {
+ if ( !Alloc(nLen) )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ }
+ else
+ {
+ wxCharBuffer buf(nLen);
+ // WC2MB wants the buffer size, not the string length
+ if ( conv.WC2MB(buf.data(), pwz, nLen + 1) != (size_t)-1 )
+ {
+ // initialized ok
+ assign(buf.data(), nLen);
+ return;
+ }
+ //else: the conversion failed -- leave the string empty (what else?)
+ }
+ }
+
+ // leave empty
+}
+#endif // wxUSE_WCHAR_T
+
+#endif // Unicode/ANSI
+
+// shrink to minimal size (releasing extra memory)
+bool wxString::Shrink()
+{
+ wxString tmp(begin(), end());
+ swap(tmp);
+ return tmp.length() == length();
+}
+
+#if !wxUSE_STL
+// get the pointer to writable buffer of (at least) nLen bytes
+wxChar *wxString::GetWriteBuf(size_t nLen)
+{
+ if ( !AllocBeforeWrite(nLen) ) {
+ // allocation failure handled by caller
+ return NULL;
+ }
+
+ wxASSERT( GetStringData()->nRefs == 1 );
+ GetStringData()->Validate(FALSE);
+
+ return m_pchData;
+}
+
+// put string back in a reasonable state after GetWriteBuf
+void wxString::UngetWriteBuf()
+{
+ GetStringData()->nDataLength = wxStrlen(m_pchData);
+ GetStringData()->Validate(TRUE);
+}
+
+void wxString::UngetWriteBuf(size_t nLen)
+{
+ GetStringData()->nDataLength = nLen;
+ GetStringData()->Validate(TRUE);
+}
+#endif
+
+// ---------------------------------------------------------------------------
+// data access
+// ---------------------------------------------------------------------------
+
+// all functions are inline in string.h
+
+// ---------------------------------------------------------------------------
+// assignment operators
+// ---------------------------------------------------------------------------
+
+#if !wxUSE_UNICODE
+
+// same as 'signed char' variant
+wxString& wxString::operator=(const unsigned char* psz)
+{
+ *this = (const char *)psz;
+ return *this;
+}
+
+#if wxUSE_WCHAR_T
+wxString& wxString::operator=(const wchar_t *pwz)
+{
+ wxString str(pwz);
+ swap(str);
+ return *this;
}
+#endif
+
+#endif
/*
* concatenation functions come in 5 flavours:
* C str + string and string + C str
*/
-wxString operator+(const wxString& string1, const wxString& string2)
+wxString operator+(const wxString& str1, const wxString& str2)
{
- wxASSERT( string1.GetStringData()->IsValid() );
- wxASSERT( string2.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str1.GetStringData()->IsValid() );
+ wxASSERT( str2.GetStringData()->IsValid() );
+#endif
- wxString s = string1;
- s += string2;
+ wxString s = str1;
+ s += str2;
return s;
}
-wxString operator+(const wxString& string, wxChar ch)
+wxString operator+(const wxString& str, wxChar ch)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
- wxString s = string;
+ wxString s = str;
s += ch;
return s;
}
-wxString operator+(wxChar ch, const wxString& string)
+wxString operator+(wxChar ch, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
wxString s = ch;
- s += string;
+ s += str;
return s;
}
-wxString operator+(const wxString& string, const wxChar *psz)
+wxString operator+(const wxString& str, const wxChar *psz)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
wxString s;
- s.Alloc(wxStrlen(psz) + string.Len());
- s = string;
+ if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
+ s = str;
s += psz;
return s;
}
-wxString operator+(const wxChar *psz, const wxString& string)
+wxString operator+(const wxChar *psz, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+#if !wxUSE_STL
+ wxASSERT( str.GetStringData()->IsValid() );
+#endif
wxString s;
- s.Alloc(wxStrlen(psz) + string.Len());
+ if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ }
s = psz;
- s += string;
+ s += str;
return s;
}
// other common string functions
// ===========================================================================
-// ---------------------------------------------------------------------------
-// simple sub-string extraction
-// ---------------------------------------------------------------------------
+#if wxUSE_UNICODE
-// helper function: clone the data attached to this string
-void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+wxString wxString::FromAscii(const char *ascii)
{
- if ( nCopyLen == 0 ) {
- dest.Init();
- }
- else {
- dest.AllocBuffer(nCopyLen);
- memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
- }
+ if (!ascii)
+ return wxEmptyString;
+
+ size_t len = strlen( ascii );
+ wxString res;
+
+ if ( len )
+ {
+ wxStringBuffer buf(res, len);
+
+ wchar_t *dest = buf;
+
+ for ( ;; )
+ {
+ if ( (*dest++ = (wchar_t)(unsigned char)*ascii++) == L'\0' )
+ break;
+ }
+ }
+
+ return res;
+}
+
+wxString wxString::FromAscii(const char ascii)
+{
+ // What do we do with '\0' ?
+
+ wxString res;
+ res += (wchar_t)(unsigned char) ascii;
+
+ return res;
+}
+
+const wxCharBuffer wxString::ToAscii() const
+{
+ // this will allocate enough space for the terminating NUL too
+ wxCharBuffer buffer(length());
+
+ signed char *dest = (signed char *)buffer.data();
+
+ const wchar_t *pwc = c_str();
+ for ( ;; )
+ {
+ *dest++ = *pwc > SCHAR_MAX ? '_' : *pwc;
+
+ // the output string can't have embedded NULs anyhow, so we can safely
+ // stop at first of them even if we do have any
+ if ( !*pwc++ )
+ break;
+ }
+
+ return buffer;
}
+#endif // Unicode
+
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
- wxStringData *pData = GetStringData();
- size_t nLen = pData->nDataLength;
+ size_t nLen = length();
- // default value of nCount is wxSTRING_MAXLEN and means "till the end"
- if ( nCount == wxSTRING_MAXLEN )
+ // default value of nCount is npos and means "till the end"
+ if ( nCount == npos )
{
nCount = nLen - nFirst;
}
nCount = 0;
}
- wxString dest;
- AllocCopy(dest, nCount, nFirst);
+ wxString dest(*this, nFirst, nCount);
+ if ( dest.length() != nCount ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ }
return dest;
}
-// check that the tring starts with prefix and return the rest of the string
+// 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
{
// extract nCount last (rightmost) characters
wxString wxString::Right(size_t nCount) const
{
- if ( nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength;
+ if ( nCount > length() )
+ nCount = length();
- wxString dest;
- AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount);
+ wxString dest(*this, length() - nCount, nCount);
+ if ( dest.length() != nCount ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Right") );
+ }
return dest;
}
// extract nCount first (leftmost) characters
wxString wxString::Left(size_t nCount) const
{
- if ( nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength;
+ if ( nCount > length() )
+ nCount = length();
- wxString dest;
- AllocCopy(dest, nCount, 0);
+ wxString dest(*this, 0, nCount);
+ if ( dest.length() != nCount ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Left") );
+ }
return dest;
}
// (returns the whole string if ch not found)
wxString wxString::BeforeFirst(wxChar ch) const
{
- wxString str;
- for ( const wxChar *pc = m_pchData; *pc != wxT('\0') && *pc != ch; pc++ )
- str += *pc;
-
- return str;
+ int iPos = Find(ch);
+ if ( iPos == wxNOT_FOUND ) iPos = length();
+ return wxString(*this, 0, iPos);
}
/// get all characters before the last occurence of ch
}
// 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 uiOldLen = wxStrlen(szOld);
wxString strTemp;
- const wxChar *pCurrent = m_pchData;
+ const wxChar *pCurrent = c_str();
const wxChar *pSubstr;
while ( *pCurrent != wxT('\0') ) {
pSubstr = wxStrstr(pCurrent, szOld);
}
else {
// take chars before match
- strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
+ 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
}
// only done if there were replacements, otherwise would have returned above
- *this = strTemp;
+ swap(strTemp);
return uiCount;
}
wxString& wxString::MakeUpper()
{
- CopyBeforeWrite();
-
- for ( wxChar *p = m_pchData; *p; p++ )
- *p = (wxChar)wxToupper(*p);
+ for ( iterator it = begin(), en = end(); it != en; ++it )
+ *it = (wxChar)wxToupper(*it);
return *this;
}
wxString& wxString::MakeLower()
{
- CopyBeforeWrite();
-
- for ( wxChar *p = m_pchData; *p; p++ )
- *p = (wxChar)wxTolower(*p);
+ for ( iterator it = begin(), en = end(); it != en; ++it )
+ *it = (wxChar)wxTolower(*it);
return *this;
}
)
)
{
- // ok, there is at least one space to trim
- CopyBeforeWrite();
-
if ( bFromRight )
{
// find last non-space character
- wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )
+ iterator psz = begin() + length() - 1;
+ while ( wxSafeIsspace(*psz) && (psz >= begin()) )
psz--;
// truncate at trailing space start
*++psz = wxT('\0');
- GetStringData()->nDataLength = psz - m_pchData;
+ erase(psz, end());
}
else
{
// find first non-space character
- const wxChar *psz = m_pchData;
+ iterator psz = begin();
while ( wxSafeIsspace(*psz) )
psz++;
// fix up data and length
- int nDataLength = GetStringData()->nDataLength - (psz - (const wxChar*) m_pchData);
- memmove(m_pchData, psz, (nDataLength + 1)*sizeof(wxChar));
- GetStringData()->nDataLength = nDataLength;
+ erase(begin(), psz);
}
}
else
{
s += *this;
- *this = s;
+ swap(s);
}
return *this;
wxString& wxString::Truncate(size_t uiLen)
{
if ( uiLen < Len() ) {
- CopyBeforeWrite();
-
- *(m_pchData + uiLen) = wxT('\0');
- GetStringData()->nDataLength = uiLen;
+ erase(begin() + uiLen, end());
}
//else: nothing to do, string is already short enough
// find a character
int wxString::Find(wxChar ch, bool bFromEnd) const
{
- const wxChar *psz = bFromEnd ? wxStrrchr(m_pchData, ch) : wxStrchr(m_pchData, ch);
+ size_type idx = bFromEnd ? find_last_of(ch) : find_first_of(ch);
- return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
// find a sub-string (like strstr)
int wxString::Find(const wxChar *pszSub) const
{
- const wxChar *psz = wxStrstr(m_pchData, pszSub);
+ size_type idx = find(pszSub);
- return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+ return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
// ----------------------------------------------------------------------------
bool wxString::ToLong(long *val, int base) const
{
wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
const wxChar *start = c_str();
wxChar *end;
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") );
const wxChar *start = c_str();
wxChar *end;
int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
-#if wxUSE_EXPERIMENTAL_PRINTF
- // the new implementation
-
- // buffer to avoid dynamic memory allocation each time for small strings
- char szScratch[1024];
-
- Reinit();
- for (size_t n = 0; pszFormat[n]; n++)
- if (pszFormat[n] == wxT('%')) {
- static char s_szFlags[256] = "%";
- size_t flagofs = 1;
- bool adj_left = FALSE, in_prec = FALSE,
- prec_dot = FALSE, done = FALSE;
- int ilen = 0;
- size_t min_width = 0, max_width = wxSTRING_MAXLEN;
- do {
-#define CHECK_PREC if (in_prec && !prec_dot) { s_szFlags[flagofs++] = '.'; prec_dot = TRUE; }
- switch (pszFormat[++n]) {
- case wxT('\0'):
- done = TRUE;
- break;
- case wxT('%'):
- *this += wxT('%');
- done = TRUE;
- break;
- case wxT('#'):
- case wxT('0'):
- case wxT(' '):
- case wxT('+'):
- case wxT('\''):
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('-'):
- CHECK_PREC
- adj_left = TRUE;
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('.'):
- CHECK_PREC
- in_prec = TRUE;
- prec_dot = FALSE;
- max_width = 0;
- // dot will be auto-added to s_szFlags if non-negative number follows
- break;
- case wxT('h'):
- ilen = -1;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('l'):
- ilen = 1;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('q'):
- case wxT('L'):
- ilen = 2;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('Z'):
- ilen = 3;
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- break;
- case wxT('*'):
- {
- int len = va_arg(argptr, int);
- if (in_prec) {
- if (len<0) break;
- CHECK_PREC
- max_width = len;
- } else {
- if (len<0) {
- adj_left = !adj_left;
- s_szFlags[flagofs++] = '-';
- len = -len;
- }
- min_width = len;
- }
- flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
- }
- break;
- case wxT('1'): case wxT('2'): case wxT('3'):
- case wxT('4'): case wxT('5'): case wxT('6'):
- case wxT('7'): case wxT('8'): case wxT('9'):
- {
- int len = 0;
- CHECK_PREC
- while ((pszFormat[n]>=wxT('0')) && (pszFormat[n]<=wxT('9'))) {
- s_szFlags[flagofs++] = pszFormat[n];
- len = len*10 + (pszFormat[n] - wxT('0'));
- n++;
+ int size = 1024;
+ int len;
+
+ for ( ;; )
+ {
+ {
+ wxStringBuffer tmp(*this, size + 1);
+ wxChar* buf = tmp;
+
+ if ( !buf )
+ {
+ // out of memory
+ return -1;
}
- if (in_prec) max_width = len;
- else min_width = len;
- n--; // the main loop pre-increments n again
- }
- break;
- case wxT('d'):
- case wxT('i'):
- case wxT('o'):
- case wxT('u'):
- case wxT('x'):
- case wxT('X'):
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- s_szFlags[flagofs] = '\0';
- if (ilen == 0 ) {
- int val = va_arg(argptr, int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == -1) {
- short int val = va_arg(argptr, short int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == 1) {
- long int val = va_arg(argptr, long int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == 2) {
-#if SIZEOF_LONG_LONG
- long long int val = va_arg(argptr, long long int);
- ::sprintf(szScratch, s_szFlags, val);
-#else
- long int val = va_arg(argptr, long int);
- ::sprintf(szScratch, s_szFlags, val);
-#endif
- }
- else if (ilen == 3) {
- size_t val = va_arg(argptr, size_t);
- ::sprintf(szScratch, s_szFlags, val);
- }
- *this += wxString(szScratch);
- done = TRUE;
- break;
- case wxT('e'):
- case wxT('E'):
- case wxT('f'):
- case wxT('g'):
- case wxT('G'):
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- s_szFlags[flagofs] = '\0';
- if (ilen == 2) {
- long double val = va_arg(argptr, long double);
- ::sprintf(szScratch, s_szFlags, val);
- } else {
- double val = va_arg(argptr, double);
- ::sprintf(szScratch, s_szFlags, val);
- }
- *this += wxString(szScratch);
- done = TRUE;
- break;
- case wxT('p'):
- {
- void *val = va_arg(argptr, void *);
- CHECK_PREC
- s_szFlags[flagofs++] = pszFormat[n];
- s_szFlags[flagofs] = '\0';
- ::sprintf(szScratch, s_szFlags, val);
- *this += wxString(szScratch);
- done = TRUE;
- }
- break;
- case wxT('c'):
- {
- wxChar val = va_arg(argptr, int);
- // we don't need to honor padding here, do we?
- *this += val;
- done = TRUE;
- }
- break;
- case wxT('s'):
- if (ilen == -1) {
- // wx extension: we'll let %hs mean non-Unicode strings
- char *val = va_arg(argptr, char *);
-#if wxUSE_UNICODE
- // ASCII->Unicode constructor handles max_width right
- wxString s(val, wxConvLibc, max_width);
-#else
- size_t len = wxSTRING_MAXLEN;
- if (val) {
- for (len = 0; val[len] && (len<max_width); len++);
- } else val = wxT("(null)");
- wxString s(val, len);
-#endif
- if (s.Len() < min_width)
- s.Pad(min_width - s.Len(), wxT(' '), adj_left);
- *this += s;
- } else {
- wxChar *val = va_arg(argptr, wxChar *);
- size_t len = wxSTRING_MAXLEN;
- if (val) {
- for (len = 0; val[len] && (len<max_width); len++);
- } else val = wxT("(null)");
- wxString s(val, len);
- if (s.Len() < min_width)
- s.Pad(min_width - s.Len(), wxT(' '), adj_left);
- *this += s;
- }
- done = TRUE;
- break;
- case wxT('n'):
- if (ilen == 0) {
- int *val = va_arg(argptr, int *);
- *val = Len();
- }
- else if (ilen == -1) {
- short int *val = va_arg(argptr, short int *);
- *val = Len();
- }
- else if (ilen >= 1) {
- long int *val = va_arg(argptr, long int *);
- *val = Len();
- }
- done = TRUE;
- break;
- default:
- if (wxIsalpha(pszFormat[n]))
- // probably some flag not taken care of here yet
- s_szFlags[flagofs++] = pszFormat[n];
- else {
- // bad format
- *this += wxT('%'); // just to pass the glibc tst-printf.c
- n--;
- done = TRUE;
- }
- break;
+
+ len = wxVsnprintf(buf, size, pszFormat, argptr);
+
+ // 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');
}
-#undef CHECK_PREC
- } while (!done);
- } else *this += pszFormat[n];
-#else
- // buffer to avoid dynamic memory allocation each time for small strings
- char szScratch[1024];
-
- // NB: wxVsnprintf() may return either less than the buffer size or -1 if
- // there is not enough place depending on implementation
- int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), (char *)pszFormat, argptr);
- if ( iLen != -1 ) {
- // the whole string is in szScratch
- *this = szScratch;
- }
- else {
- bool outOfMemory = FALSE;
- int size = 2*WXSIZEOF(szScratch);
- while ( !outOfMemory ) {
- char *buf = GetWriteBuf(size);
- if ( buf )
- iLen = wxVsnprintfA(buf, size, pszFormat, argptr);
- else
- outOfMemory = TRUE;
-
- UngetWriteBuf();
-
- if ( iLen != -1 ) {
- // ok, there was enough space
- break;
- }
+ // 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 )
+ {
+ // ok, there was enough space
+ break;
+ }
- // still not enough, double it again
- size *= 2;
- }
+ // still not enough, double it again
+ size *= 2;
+ }
- if ( outOfMemory ) {
- // out of memory
- return -1;
- }
- }
-#endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
+ // we could have overshot
+ Shrink();
- return Len();
+ return Len();
}
// ----------------------------------------------------------------------------
return iLen;
}
-// ---------------------------------------------------------------------------
-// standard C++ library string functions
-// ---------------------------------------------------------------------------
-
-#ifdef wxSTD_STRING_COMPATIBILITY
-
-void wxString::resize(size_t nSize, wxChar ch)
-{
- size_t len = length();
-
- if ( nSize < len )
- {
- Truncate(nSize);
- }
- else if ( nSize > len )
- {
- *this += wxString(ch, nSize - len);
- }
- //else: we have exactly the specified length, nothing to do
-}
-
-void wxString::swap(wxString& str)
-{
- // this is slightly less efficient than fiddling with m_pchData directly,
- // but it is still quite efficient as we don't copy the string here because
- // ref count always stays positive
- wxString tmp = str;
- str = *this;
- *this = str;
-}
-
-wxString& wxString::insert(size_t nPos, const wxString& str)
-{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nPos <= Len() );
-
- if ( !str.IsEmpty() ) {
- wxString strTmp;
- wxChar *pc = strTmp.GetWriteBuf(Len() + str.Len());
- wxStrncpy(pc, c_str(), nPos);
- wxStrcpy(pc + nPos, str);
- wxStrcpy(pc + nPos + str.Len(), c_str() + nPos);
- strTmp.UngetWriteBuf();
- *this = strTmp;
- }
-
- return *this;
-}
-
-size_t wxString::find(const wxString& str, size_t nStart) const
-{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= Len() );
-
- const wxChar *p = wxStrstr(c_str() + nStart, str);
-
- return p == NULL ? npos : p - c_str();
-}
-
-// VC++ 1.5 can't cope with the default argument in the header.
-#if !defined(__VISUALC__) || defined(__WIN32__)
-size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
-{
- return find(wxString(sz, n), nStart);
-}
-#endif // VC++ 1.5
-
-// Gives a duplicate symbol (presumably a case-insensitivity problem)
-#if !defined(__BORLANDC__)
-size_t wxString::find(wxChar ch, size_t nStart) const
-{
- wxASSERT( nStart <= Len() );
-
- const wxChar *p = wxStrchr(c_str() + nStart, ch);
-
- return p == NULL ? npos : p - c_str();
-}
-#endif
-
-size_t wxString::rfind(const wxString& str, size_t nStart) const
-{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart == npos || nStart <= Len() );
-
- // TODO could be made much quicker than that
- const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
- while ( p >= c_str() + str.Len() ) {
- if ( wxStrncmp(p - str.Len(), str, str.Len()) == 0 )
- return p - str.Len() - c_str();
- p--;
- }
-
- return npos;
-}
-
-// VC++ 1.5 can't cope with the default argument in the header.
-#if !defined(__VISUALC__) || defined(__WIN32__)
-size_t wxString::rfind(const wxChar* sz, size_t nStart, size_t n) const
-{
- return rfind(wxString(sz, n == npos ? wxSTRING_MAXLEN : n), nStart);
-}
-
-size_t wxString::rfind(wxChar ch, size_t nStart) const
-{
- if ( nStart == npos )
- {
- nStart = Len();
- }
- else
- {
- wxASSERT( nStart <= Len() );
- }
-
- const wxChar *p = wxStrrchr(c_str(), ch);
-
- if ( p == NULL )
- return npos;
-
- size_t result = p - c_str();
- return ( result > nStart ) ? npos : result;
-}
-#endif // VC++ 1.5
-
-size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
-{
- const wxChar *start = c_str() + nStart;
- const wxChar *firstOf = wxStrpbrk(start, sz);
- if ( firstOf )
- return firstOf - c_str();
- else
- return npos;
-}
-
-size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
-{
- if ( nStart == npos )
- {
- nStart = Len();
- }
- else
- {
- wxASSERT( nStart <= Len() );
- }
-
- for ( const wxChar *p = c_str() + length() - 1; p >= c_str(); p-- )
- {
- if ( wxStrchr(sz, *p) )
- return p - c_str();
- }
-
- return npos;
-}
-
-size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
-{
- if ( nStart == npos )
- {
- nStart = Len();
- }
- else
- {
- wxASSERT( nStart <= Len() );
- }
-
- size_t nAccept = wxStrspn(c_str() + nStart, sz);
- if ( nAccept >= length() - nStart )
- return npos;
- else
- return nAccept;
-}
-
-size_t wxString::find_first_not_of(wxChar ch, size_t nStart) const
-{
- wxASSERT( nStart <= Len() );
-
- for ( const wxChar *p = c_str() + nStart; *p; p++ )
- {
- if ( *p != ch )
- return p - c_str();
- }
-
- return npos;
-}
-
-size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
-{
- if ( nStart == npos )
- {
- nStart = Len();
- }
- else
- {
- wxASSERT( nStart <= Len() );
- }
-
- for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
- {
- if ( !wxStrchr(sz, *p) )
- return p - c_str();
- }
-
- return npos;
-}
-
-size_t wxString::find_last_not_of(wxChar ch, size_t nStart) const
-{
- if ( nStart == npos )
- {
- nStart = Len();
- }
- else
- {
- wxASSERT( nStart <= Len() );
- }
-
- for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
- {
- if ( *p != ch )
- return p - c_str();
- }
-
- return npos;
-}
-
-wxString& wxString::erase(size_t nStart, size_t nLen)
-{
- wxString strTmp(c_str(), nStart);
- if ( nLen != npos ) {
- wxASSERT( nStart + nLen <= Len() );
-
- strTmp.append(c_str() + nStart + nLen);
- }
-
- *this = strTmp;
- return *this;
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
-{
- wxASSERT_MSG( nStart + nLen <= Len(),
- _T("index out of bounds in wxString::replace") );
-
- wxString strTmp;
- strTmp.Alloc(Len()); // micro optimisation to avoid multiple mem allocs
-
- if ( nStart != 0 )
- strTmp.append(c_str(), nStart);
- strTmp << sz << c_str() + nStart + nLen;
-
- *this = strTmp;
- return *this;
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch)
-{
- return replace(nStart, nLen, wxString(ch, nCount));
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen,
- const wxString& str, size_t nStart2, size_t nLen2)
-{
- return replace(nStart, nLen, str.substr(nStart2, nLen2));
-}
-
-wxString& wxString::replace(size_t nStart, size_t nLen,
- const wxChar* sz, size_t nCount)
-{
- return replace(nStart, nLen, wxString(sz, nCount));
-}
-
-#endif //std::string compatibility
-
// ============================================================================
// ArrayString
// ============================================================================
+#include "wx/arrstr.h"
+
+#if !wxUSE_STL
+
// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
#define ARRAY_MAXSIZE_INCREMENT 4096
#define STRING(p) ((wxString *)(&(p)))
// ctor
-wxArrayString::wxArrayString(bool autoSort)
+void wxArrayString::Init(bool autoSort)
{
m_nSize =
m_nCount = 0;
// copy ctor
wxArrayString::wxArrayString(const wxArrayString& src)
{
- m_nSize =
- m_nCount = 0;
- m_pItems = (wxChar **) NULL;
- m_autoSort = src.m_autoSort;
+ Init(src.m_autoSort);
*this = src;
}
}
// grow the array
-void wxArrayString::Grow()
+void wxArrayString::Grow(size_t nIncrement)
{
// only do it if no more place
- if ( m_nCount == m_nSize ) {
+ if ( (m_nSize - m_nCount) < nIncrement ) {
// if ARRAY_DEFAULT_INITIAL_SIZE were set to 0, the initially empty would
// be never resized!
#if ARRAY_DEFAULT_INITIAL_SIZE == 0
if ( m_nSize == 0 ) {
// was empty, alloc some memory
m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
+ if (m_nSize < nIncrement)
+ m_nSize = nIncrement;
m_pItems = new wxChar *[m_nSize];
}
else {
// 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 nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
+ size_t ndefIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
- if ( nIncrement > ARRAY_MAXSIZE_INCREMENT )
- nIncrement = ARRAY_MAXSIZE_INCREMENT;
+ if ( ndefIncrement > ARRAY_MAXSIZE_INCREMENT )
+ ndefIncrement = ARRAY_MAXSIZE_INCREMENT;
+ if ( nIncrement < ndefIncrement )
+ nIncrement = ndefIncrement;
m_nSize += nIncrement;
wxChar **pNew = new wxChar *[m_nSize];
wxDELETEA(m_pItems);
}
+void wxArrayString::reserve(size_t nSize)
+{
+ Alloc(nSize);
+}
+
// pre-allocates memory (frees the previous data!)
void wxArrayString::Alloc(size_t nSize)
{
- wxASSERT( nSize > 0 );
-
// only if old buffer was not big enough
if ( nSize > m_nSize ) {
Free();
}
}
+#if WXWIN_COMPATIBILITY_2_4
+
// return a wxString[] as required for some control ctors.
wxString* wxArrayString::GetStringArray() const
{
return array;
}
+#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
{
}
// add item at the end
-size_t wxArrayString::Add(const wxString& str)
+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
wxASSERT_MSG( lo == hi, wxT("binary search broken") );
- Insert(str, lo);
+ Insert(str, lo, nInsert);
return (size_t)lo;
}
else {
wxASSERT( str.GetStringData()->IsValid() );
- Grow();
+ Grow(nInsert);
- // the string data must not be deleted!
- str.GetStringData()->Lock();
-
- // just append
- m_pItems[m_nCount] = (wxChar *)str.c_str(); // const_cast
+ for (size_t i = 0; i < nInsert; i++)
+ {
+ // the string data must not be deleted!
+ str.GetStringData()->Lock();
- return m_nCount++;
+ // just append
+ m_pItems[m_nCount + i] = (wxChar *)str.c_str(); // const_cast
+ }
+ size_t ret = m_nCount;
+ m_nCount += nInsert;
+ return ret;
}
}
// add item at the given position
-void wxArrayString::Insert(const wxString& str, size_t nIndex)
+void wxArrayString::Insert(const wxString& str, size_t nIndex, size_t nInsert)
{
wxASSERT( str.GetStringData()->IsValid() );
wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Insert") );
+ wxCHECK_RET( m_nCount <= m_nCount + nInsert,
+ wxT("array size overflow in wxArrayString::Insert") );
- Grow();
+ Grow(nInsert);
- memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex],
+ memmove(&m_pItems[nIndex + nInsert], &m_pItems[nIndex],
(m_nCount - nIndex)*sizeof(wxChar *));
- str.GetStringData()->Lock();
- m_pItems[nIndex] = (wxChar *)str.c_str();
-
- m_nCount++;
+ for (size_t i = 0; i < nInsert; i++)
+ {
+ str.GetStringData()->Lock();
+ m_pItems[nIndex + i] = (wxChar *)str.c_str();
+ }
+ m_nCount += nInsert;
}
// expand the array
}
// removes item from array (by index)
-void wxArrayString::Remove(size_t nIndex)
+void wxArrayString::RemoveAt(size_t nIndex, size_t nRemove)
{
- wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Remove") );
+ wxCHECK_RET( nIndex < m_nCount, wxT("bad index in wxArrayString::Remove") );
+ wxCHECK_RET( nIndex + nRemove <= m_nCount,
+ wxT("removing too many elements in wxArrayString::Remove") );
// release our lock
- Item(nIndex).GetStringData()->Unlock();
+ for (size_t i = 0; i < nRemove; i++)
+ Item(nIndex + i).GetStringData()->Unlock();
- memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1],
- (m_nCount - nIndex - 1)*sizeof(wxChar *));
- m_nCount--;
+ memmove(&m_pItems[nIndex], &m_pItems[nIndex + nRemove],
+ (m_nCount - nIndex - nRemove)*sizeof(wxChar *));
+ m_nCount -= nRemove;
}
// removes item from array (by value)
wxCHECK_RET( iIndex != wxNOT_FOUND,
wxT("removing inexistent element in wxArrayString::Remove") );
- Remove(iIndex);
+ RemoveAt(iIndex);
+}
+
+void wxArrayString::assign(const_iterator first, const_iterator last)
+{
+ reserve(last - first);
+ for(; first != last; ++first)
+ push_back(*first);
}
// ----------------------------------------------------------------------------
static bool gs_sortAscending = TRUE;
// function which is called by quick sort
-extern "C" int LINKAGEMODE
+extern "C" int wxC_CALLING_CONV // LINKAGEMODE
wxStringCompareFunction(const void *first, const void *second)
{
wxString *strFirst = (wxString *)first;
END_SORT();
}
-void wxArrayString::Sort(bool reverseOrder)
-{
- START_SORT();
-
- wxASSERT( !gs_compareFunction ); // must have been reset to NULL
- gs_sortAscending = !reverseOrder;
+typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first, const void *second);
- DoSort();
+void wxArrayString::Sort(CompareFunction2 compareFunction)
+{
+ qsort(m_pItems, m_nCount, sizeof(wxChar *), (wxStringCompareFn)compareFunction);
+}
- END_SORT();
+void wxArrayString::Sort(bool reverseOrder)
+{
+ Sort(reverseOrder ? wxStringSortDescending : wxStringSortAscending);
}
void wxArrayString::DoSort()
return TRUE;
}
+#endif // !wxUSE_STL
+
+int wxCMPFUNC_CONV wxStringSortAscending(wxString* s1, wxString* s2)
+{
+ return wxStrcmp(s1->c_str(), s2->c_str());
+}
+
+int wxCMPFUNC_CONV wxStringSortDescending(wxString* s1, wxString* s2)
+{
+ return -wxStrcmp(s1->c_str(), s2->c_str());
+}
projects / wxWidgets.git / blobdiff