#include "wx/defs.h"
#include "wx/string.h"
#include "wx/intl.h"
-#if wxUSE_THREADS
- #include <wx/thread.h>
-#endif
+ #include "wx/thread.h"
#endif
#include <ctype.h>
#include <clib.h>
#endif
-#if wxUSE_WCSRTOMBS
- #include <wchar.h> // for wcsrtombs(), see comments where it's used
-#endif // GNU
-
-#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
+ #undef wxUSE_EXPERIMENTAL_PRINTF
+ #define wxUSE_EXPERIMENTAL_PRINTF 1
#endif
// allocating extra space for each string consumes more memory but speeds up
// static class variables definition
// ---------------------------------------------------------------------------
+#if defined(__VISAGECPP__) && __IBMCPP__ >= 400
+// must define this static for VA or else you get multiply defined symbols
+// everywhere
+const unsigned int wxSTRING_MAXLEN = UINT_MAX - 100;
+#endif // Visual Age
+
#ifdef wxSTD_STRING_COMPATIBILITY
const size_t wxString::npos = wxSTRING_MAXLEN;
#endif // wxSTD_STRING_COMPATIBILITY
// 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__
- #ifdef __VISUALC__
- #define wxVsnprintf _vsnprintf
+ #if defined(__VISUALC__) || (defined(__MINGW32__) && wxUSE_NORLANDER_HEADERS)
+ #define wxVsnprintfA _vsnprintf
#endif
+#elif defined(__WXMAC__)
+ #define wxVsnprintfA vsnprintf
#else // !Windows
#ifdef HAVE_VSNPRINTF
- #define wxVsnprintf vsnprintf
+ #define wxVsnprintfA vsnprintf
#endif
#endif // Windows/!Windows
-#ifndef wxVsnprintf
+#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 wxVsnprintf(buffer,len,format,argptr) vsprintf(buffer,format, argptr)
+ #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__) && !defined(__UNIX__)
+ #elif defined(__GNUG__)
#warning "Using sprintf() because no snprintf()-like function defined"
- #elif defined(__MWERKS__)
- #warning "Using sprintf() because no snprintf()-like function defined"
#endif //compiler
#endif // no vsnprintf
-#ifdef _AIX
+#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
//
// ATTN: you can _not_ use both of these in the same program!
-istream& operator>>(istream& is, wxString& WXUNUSED(str))
+wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
{
#if 0
int w = is.width(0);
return is;
}
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
+{
+ os << str.c_str();
+ return os;
+}
+
#endif //std::string compatibility
+extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
+ const wxChar *format, va_list argptr)
+{
+#if wxUSE_UNICODE
+ // FIXME should use wvsnprintf() or whatever if it's available
+ wxString s;
+ int iLen = s.PrintfV(format, argptr);
+ if ( iLen != -1 )
+ {
+ wxStrncpy(buf, s.c_str(), len);
+ buf[len-1] = wxT('\0');
+ }
+
+ return iLen;
+#else // ANSI
+ // vsnprintf() will not terminate the string with '\0' if there is not
+ // enough place, but we want the string to always be NUL terminated
+ int rc = wxVsnprintfA(buf, len - 1, format, argptr);
+ if ( rc == -1 )
+ {
+ buf[len] = 0;
+ }
+
+ return rc;
+#endif // Unicode/ANSI
+}
+
+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;
+}
+
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
Init();
if ( nLength > 0 ) {
- AllocBuffer(nLength);
+ if ( !AllocBuffer(nLength) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
#if wxUSE_UNICODE
// memset only works on char
{
Init();
- wxASSERT( nPos <= wxStrlen(psz) );
+ // if the length is not given, assume the string to be NUL terminated
+ if ( nLength == wxSTRING_MAXLEN ) {
+ wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
- if ( nLength == wxSTRING_MAXLEN )
nLength = wxStrlen(psz + nPos);
+ }
STATISTICS_ADD(InitialLength, nLength);
if ( nLength > 0 ) {
// trailing '\0' is written in AllocBuffer()
- AllocBuffer(nLength);
+ if ( !AllocBuffer(nLength) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::InitWith") );
+ return;
+ }
memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
}
}
// empty?
if ( (nLen != 0) && (nLen != (size_t)-1) ) {
- AllocBuffer(nLen);
+ if ( !AllocBuffer(nLen) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
conv.MB2WC(m_pchData, psz, nLen);
}
else {
#if wxUSE_WCHAR_T
// from wide string
-wxString::wxString(const wchar_t *pwz)
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
{
// first get necessary size
- size_t nLen = pwz ? wxWC2MB((char *) NULL, pwz, 0) : 0;
+ size_t nLen = 0;
+ if (pwz)
+ {
+ if (nLength == wxSTRING_MAXLEN)
+ nLen = conv.WC2MB((char *) NULL, pwz, 0);
+ else
+ nLen = nLength;
+ }
// empty?
if ( (nLen != 0) && (nLen != (size_t)-1) ) {
- AllocBuffer(nLen);
- wxWC2MB(m_pchData, pwz, nLen);
+ if ( !AllocBuffer(nLen) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
+ conv.WC2MB(m_pchData, pwz, nLen);
}
else {
Init();
// ---------------------------------------------------------------------------
// allocates memory needed to store a C string of length nLen
-void wxString::AllocBuffer(size_t nLen)
+bool wxString::AllocBuffer(size_t nLen)
{
- wxASSERT( nLen > 0 ); //
- wxASSERT( nLen <= INT_MAX-1 ); // max size (enough room for 1 extra)
+ // allocating 0 sized buffer doesn't make sense, all empty strings should
+ // reuse g_strEmpty
+ wxASSERT( nLen > 0 );
+
+ // make sure that we don't overflow
+ wxASSERT( nLen < (INT_MAX / sizeof(wxChar)) -
+ (sizeof(wxStringData) + EXTRA_ALLOC + 1) );
STATISTICS_ADD(Length, nLen);
// 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 wxString::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 wxString::AllocBeforeWrite(size_t nLen)
{
wxASSERT( nLen != 0 ); // doesn't make any sense
// must not share string and must have enough space
wxStringData* pData = GetStringData();
- if ( pData->IsShared() || (nLen > pData->nAllocLength) ) {
+ if ( pData->IsShared() || pData->IsEmpty() ) {
// can't work with old buffer, get new one
pData->Unlock();
- AllocBuffer(nLen);
+ if ( !AllocBuffer(nLen) ) {
+ // allocation failures are handled by the caller
+ return FALSE;
+ }
}
else {
- // update the string length
+ if ( nLen > pData->nAllocLength ) {
+ // realloc the buffer instead of calling malloc() again, this is more
+ // efficient
+ STATISTICS_ADD(Length, nLen);
+
+ nLen += EXTRA_ALLOC;
+
+ pData = (wxStringData*)
+ realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+ if ( pData == NULL ) {
+ // allocation failures are handled by the caller
+ // keep previous data since reallocation failed
+ return FALSE;
+ }
+
+ pData->nAllocLength = nLen;
+ m_pchData = pData->data();
+ }
+
+ // now we have enough space, just update the string length
pData->nDataLength = nLen;
}
wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
+
+ return TRUE;
}
// allocate enough memory for nLen characters
-void wxString::Alloc(size_t nLen)
+bool wxString::Alloc(size_t nLen)
{
wxStringData *pData = GetStringData();
if ( pData->nAllocLength <= nLen ) {
nLen += EXTRA_ALLOC;
wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(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 *p = (wxStringData *)
+ pData = (wxStringData *)
realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
- if ( p == NULL ) {
- // @@@ what to do on memory error?
- return;
+ if ( pData == NULL ) {
+ // allocation failure handled by caller
+ // keep previous data since reallocation failed
+ return FALSE;
}
// it's not important if the pointer changed or not (the check for this
// is not faster than assigning to m_pchData in all cases)
- p->nAllocLength = nLen;
- m_pchData = p->data();
+ pData->nAllocLength = nLen;
+ m_pchData = pData->data();
}
}
//else: we've already got enough
+ return TRUE;
}
// shrink to minimal size (releasing extra memory)
-void wxString::Shrink()
+bool wxString::Shrink()
{
wxStringData *pData = GetStringData();
- // this variable is unused in release build, so avoid the compiler warning by
- // just not declaring it
-#ifdef __WXDEBUG__
- void *p =
-#endif
- realloc(pData, sizeof(wxStringData) + (pData->nDataLength + 1)*sizeof(wxChar));
+ size_t nLen = pData->nDataLength;
+ void *p = realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+
+ if ( p == NULL) {
+ wxFAIL_MSG( _T("out of memory reallocating wxString data") );
+ // keep previous data since reallocation failed
+ return FALSE;
+ }
- wxASSERT( p != NULL ); // can't free memory?
- wxASSERT( p == pData ); // we're decrementing the size - block shouldn't move!
+ if ( p != pData )
+ {
+ // contrary to what one might believe, some realloc() implementation do
+ // move the memory block even when its size is reduced
+ pData = (wxStringData *)p;
+
+ m_pchData = pData->data();
+ }
+
+ pData->nAllocLength = nLen;
+
+ return TRUE;
}
// get the pointer to writable buffer of (at least) nLen bytes
wxChar *wxString::GetWriteBuf(size_t nLen)
{
- AllocBeforeWrite(nLen);
+ if ( !AllocBeforeWrite(nLen) ) {
+ // allocation failure handled by caller
+ return NULL;
+ }
wxASSERT( GetStringData()->nRefs == 1 );
GetStringData()->Validate(FALSE);
GetStringData()->Validate(TRUE);
}
+void wxString::UngetWriteBuf(size_t nLen)
+{
+ GetStringData()->nDataLength = nLen;
+ GetStringData()->Validate(TRUE);
+}
+
// ---------------------------------------------------------------------------
// data access
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
// helper function: does real copy
-void wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
+bool wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
{
if ( nSrcLen == 0 ) {
Reinit();
}
else {
- AllocBeforeWrite(nSrcLen);
+ 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;
}
// assigns one string to another
// assigns a single character
wxString& wxString::operator=(wxChar ch)
{
- AssignCopy(1, &ch);
+ if ( !AssignCopy(1, &ch) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator=(wxChar)") );
+ }
return *this;
}
+
// assigns C string
wxString& wxString::operator=(const wxChar *psz)
{
- AssignCopy(wxStrlen(psz), psz);
+ if ( !AssignCopy(wxStrlen(psz), psz) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::operator=(const wxChar *)") );
+ }
return *this;
}
// ---------------------------------------------------------------------------
// add something to this string
-void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
+bool wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
{
STATISTICS_ADD(SummandLength, nSrcLen);
// 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();
}
STATISTICS_ADD(ConcatHit, 0);
// we have to grow the buffer
- Alloc(nNewLen);
+ if ( !Alloc(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;
}
/*
* C str + string and string + C str
*/
-wxString operator+(const wxString& string1, const wxString& string2)
+wxString operator+(const wxString& str1, const wxString& str2)
{
- wxASSERT( string1.GetStringData()->IsValid() );
- wxASSERT( string2.GetStringData()->IsValid() );
+ wxASSERT( str1.GetStringData()->IsValid() );
+ wxASSERT( str2.GetStringData()->IsValid() );
- wxString s = string1;
- s += string2;
+ wxString s = str1;
+ s += str2;
return s;
}
-wxString operator+(const wxString& string, wxChar ch)
+wxString operator+(const wxString& str, wxChar ch)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
- wxString s = string;
+ wxString s = str;
s += ch;
return s;
}
-wxString operator+(wxChar ch, const wxString& string)
+wxString operator+(wxChar ch, const wxString& str)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
wxString s = ch;
- s += string;
+ s += str;
return s;
}
-wxString operator+(const wxString& string, const wxChar *psz)
+wxString operator+(const wxString& str, const wxChar *psz)
{
- wxASSERT( string.GetStringData()->IsValid() );
+ wxASSERT( str.GetStringData()->IsValid() );
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() );
+ wxASSERT( str.GetStringData()->IsValid() );
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;
}
// ---------------------------------------------------------------------------
// helper function: clone the data attached to this string
-void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
+bool wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
{
if ( nCopyLen == 0 ) {
dest.Init();
}
else {
- dest.AllocBuffer(nCopyLen);
+ if ( !dest.AllocBuffer(nCopyLen) ) {
+ // allocation failure handled by caller
+ return FALSE;
+ }
memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
}
+ return TRUE;
}
// extract string of length nCount starting at nFirst
}
wxString dest;
- AllocCopy(dest, nCount, nFirst);
+ if ( !AllocCopy(dest, nCount, nFirst) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ }
return dest;
}
+// check that the tring starts with prefix and return the rest of the string
+// in the provided pointer if it is not NULL, otherwise return FALSE
+bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const
+{
+ wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
+
+ // first check if the beginning of the string matches the prefix: note
+ // that we don't have to check that we don't run out of this string as
+ // when we reach the terminating NUL, either prefix string ends too (and
+ // then it's ok) or we break out of the loop because there is no match
+ const wxChar *p = c_str();
+ while ( *prefix )
+ {
+ if ( *prefix++ != *p++ )
+ {
+ // no match
+ return FALSE;
+ }
+ }
+
+ if ( rest )
+ {
+ // put the rest of the string into provided pointer
+ *rest = p;
+ }
+
+ return TRUE;
+}
+
// extract nCount last (rightmost) characters
wxString wxString::Right(size_t nCount) const
{
nCount = GetStringData()->nDataLength;
wxString dest;
- AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount);
+ if ( !AllocCopy(dest, nCount, GetStringData()->nDataLength - nCount) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Right") );
+ }
return dest;
}
nCount = GetStringData()->nDataLength;
wxString dest;
- AllocCopy(dest, nCount, 0);
+ if ( !AllocCopy(dest, nCount, 0) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Left") );
+ }
return dest;
}
}
else {
// take chars before match
- strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent);
+ if ( !strTemp.ConcatSelf(pSubstr - pCurrent, pCurrent) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Replace") );
+ return 0;
+ }
strTemp += szNew;
pCurrent = pSubstr + uiOldLen; // restart after match
bool wxString::IsNumber() const
{
const wxChar *s = (const wxChar*) *this;
+ if (wxStrlen(s))
+ if ((s[0] == '-') || (s[0] == '+')) s++;
while(*s){
if(!wxIsdigit(*s)) return(FALSE);
s++;
wxString& wxString::MakeUpper()
{
- CopyBeforeWrite();
-
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::MakeUpper") );
+ return *this;
+ }
+
for ( wxChar *p = m_pchData; *p; p++ )
*p = (wxChar)wxToupper(*p);
wxString& wxString::MakeLower()
{
- CopyBeforeWrite();
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::MakeLower") );
+ return *this;
+ }
for ( wxChar *p = m_pchData; *p; p++ )
*p = (wxChar)wxTolower(*p);
// trimming and padding
// ---------------------------------------------------------------------------
+// some compilers (VC++ 6.0 not to name them) return TRUE for a call to
+// isspace('ê') in the C locale which seems to be broken to me, but we have to
+// live with this by checking that the character is a 7 bit one - even if this
+// may fail to detect some spaces (I don't know if Unicode doesn't have
+// space-like symbols somewhere except in the first 128 chars), it is arguably
+// still better than trimming away accented letters
+inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
+
// trims spaces (in the sense of isspace) from left or right side
wxString& wxString::Trim(bool bFromRight)
{
// first check if we're going to modify the string at all
if ( !IsEmpty() &&
(
- (bFromRight && wxIsspace(GetChar(Len() - 1))) ||
- (!bFromRight && wxIsspace(GetChar(0u)))
+ (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
+ (!bFromRight && wxSafeIsspace(GetChar(0u)))
)
)
{
// ok, there is at least one space to trim
- CopyBeforeWrite();
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Trim") );
+ return *this;
+ }
if ( bFromRight )
{
// find last non-space character
wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( wxIsspace(*psz) && (psz >= m_pchData) )
+ while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )
psz--;
// truncate at trailing space start
{
// find first non-space character
const wxChar *psz = m_pchData;
- while ( wxIsspace(*psz) )
+ while ( wxSafeIsspace(*psz) )
psz++;
// fix up data and length
wxString& wxString::Truncate(size_t uiLen)
{
if ( uiLen < Len() ) {
- CopyBeforeWrite();
+ if ( !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxString::Truncate") );
+ return *this;
+ }
*(m_pchData + uiLen) = wxT('\0');
GetStringData()->nDataLength = uiLen;
return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
}
-// ---------------------------------------------------------------------------
-// stream-like operators
-// ---------------------------------------------------------------------------
-wxString& wxString::operator<<(int i)
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+bool wxString::ToLong(long *val, int base) const
{
- wxString res;
- res.Printf(wxT("%d"), i);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
- return (*this) << res;
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtol(start, &end, base);
+
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
-wxString& wxString::operator<<(float f)
+bool wxString::ToULong(unsigned long *val, int base) const
{
- wxString res;
- res.Printf(wxT("%f"), f);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtoul(start, &end, base);
- return (*this) << res;
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
-wxString& wxString::operator<<(double d)
+bool wxString::ToDouble(double *val) const
{
- wxString res;
- res.Printf(wxT("%g"), d);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToDouble") );
- return (*this) << res;
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtod(start, &end);
+
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
// ---------------------------------------------------------------------------
// formatted output
// ---------------------------------------------------------------------------
+
+/* static */
+wxString wxString::Format(const wxChar *pszFormat, ...)
+{
+ va_list argptr;
+ va_start(argptr, pszFormat);
+
+ wxString s;
+ s.PrintfV(pszFormat, argptr);
+
+ va_end(argptr);
+
+ return s;
+}
+
+/* static */
+wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
+{
+ wxString s;
+ s.PrintfV(pszFormat, argptr);
+ return s;
+}
+
int wxString::Printf(const wxChar *pszFormat, ...)
{
va_list argptr;
int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
- // static buffer to avoid dynamic memory allocation each time
- char s_szScratch[1024]; // using static buffer causes internal compiler err
-#if 0
-#if wxUSE_THREADS
- // protect the static buffer
- static wxCriticalSection critsect;
- wxCriticalSectionLocker lock(critsect);
-#endif
-#endif
-
#if wxUSE_EXPERIMENTAL_PRINTF
-// the new implementation
+ // 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++)
s_szFlags[flagofs] = '\0';
if (ilen == 0 ) {
int val = va_arg(argptr, int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
else if (ilen == -1) {
short int val = va_arg(argptr, short int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
else if (ilen == 1) {
long int val = va_arg(argptr, long int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
else if (ilen == 2) {
#if SIZEOF_LONG_LONG
long long int val = va_arg(argptr, long long int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
#else
long int val = va_arg(argptr, long int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
#endif
}
else if (ilen == 3) {
size_t val = va_arg(argptr, size_t);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
- *this += wxString(s_szScratch);
+ *this += wxString(szScratch);
done = TRUE;
break;
case wxT('e'):
s_szFlags[flagofs] = '\0';
if (ilen == 2) {
long double val = va_arg(argptr, long double);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
} else {
double val = va_arg(argptr, double);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
- *this += wxString(s_szScratch);
+ *this += wxString(szScratch);
done = TRUE;
break;
case wxT('p'):
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
s_szFlags[flagofs] = '\0';
- ::sprintf(s_szScratch, s_szFlags, val);
- *this += wxString(s_szScratch);
+ ::sprintf(szScratch, s_szFlags, val);
+ *this += wxString(szScratch);
done = TRUE;
}
break;
} else *this += pszFormat[n];
#else
- // NB: wxVsnprintf() may return either less than the buffer size or -1 if there
- // is not enough place depending on implementation
- int iLen = wxVsnprintf(s_szScratch, WXSIZEOF(s_szScratch), pszFormat, argptr);
- char *buffer;
- if ( iLen < (int)WXSIZEOF(s_szScratch) ) {
- buffer = s_szScratch;
+ // 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 {
- int size = WXSIZEOF(s_szScratch) * 2;
- buffer = (char *)malloc(size);
- while ( buffer != NULL ) {
- iLen = wxVsnprintf(buffer, WXSIZEOF(s_szScratch), pszFormat, argptr);
- if ( iLen < size ) {
+ 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;
}
// still not enough, double it again
- buffer = (char *)realloc(buffer, size *= 2);
+ size *= 2;
}
- if ( !buffer ) {
+ if ( outOfMemory ) {
// out of memory
return -1;
}
}
-
- wxString s(buffer);
- *this = s;
-
- if ( buffer != s_szScratch )
- free(buffer);
-#endif
+#endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
return Len();
}
// of them)
bool wxString::Matches(const wxChar *pszMask) const
{
- // check char by char
- const wxChar *pszTxt;
- for ( pszTxt = c_str(); *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
+ // I disable this code as it doesn't seem to be faster (in fact, it seems
+ // to be much slower) than the old, hand-written code below and using it
+ // here requires always linking with libregex even if the user code doesn't
+ // use it
+#if 0 // wxUSE_REGEX
+ // first translate the shell-like mask into a regex
+ wxString pattern;
+ pattern.reserve(wxStrlen(pszMask));
+
+ pattern += _T('^');
+ while ( *pszMask )
+ {
+ switch ( *pszMask )
+ {
+ case _T('?'):
+ pattern += _T('.');
+ break;
+
+ case _T('*'):
+ pattern += _T(".*");
+ break;
+
+ case _T('^'):
+ case _T('.'):
+ case _T('$'):
+ case _T('('):
+ case _T(')'):
+ case _T('|'):
+ case _T('+'):
+ case _T('\\'):
+ // these characters are special in a RE, quote them
+ // (however note that we don't quote '[' and ']' to allow
+ // using them for Unix shell like matching)
+ pattern += _T('\\');
+ // fall through
+
+ default:
+ pattern += *pszMask;
+ }
+
+ pszMask++;
+ }
+ pattern += _T('$');
+
+ // and now use it
+ return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
+#else // !wxUSE_REGEX
+ // TODO: this is, of course, awfully inefficient...
+
+ // the char currently being checked
+ const wxChar *pszTxt = c_str();
+
+ // the last location where '*' matched
+ const wxChar *pszLastStarInText = NULL;
+ const wxChar *pszLastStarInMask = NULL;
+
+match:
+ for ( ; *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
switch ( *pszMask ) {
case wxT('?'):
if ( *pszTxt == wxT('\0') )
return FALSE;
- // pszText and pszMask will be incremented in the loop statement
+ // pszTxt and pszMask will be incremented in the loop statement
break;
case wxT('*'):
{
+ // remember where we started to be able to backtrack later
+ pszLastStarInText = pszTxt;
+ pszLastStarInMask = pszMask;
+
// ignore special chars immediately following this one
+ // (should this be an error?)
while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
pszMask++;
}
// match only if nothing left
- return *pszTxt == wxT('\0');
+ if ( *pszTxt == wxT('\0') )
+ return TRUE;
+
+ // if we failed to match, backtrack if we can
+ if ( pszLastStarInText ) {
+ pszTxt = pszLastStarInText + 1;
+ pszMask = pszLastStarInMask;
+
+ pszLastStarInText = NULL;
+
+ // don't bother resetting pszLastStarInMask, it's unnecessary
+
+ goto match;
+ }
+
+ return FALSE;
+#endif // wxUSE_REGEX/!wxUSE_REGEX
}
// Count the number of chars
// ---------------------------------------------------------------------------
// standard C++ library string functions
// ---------------------------------------------------------------------------
+
#ifdef wxSTD_STRING_COMPATIBILITY
+void wxString::resize(size_t nSize, wxChar ch)
+{
+ size_t len = length();
+
+ if ( nSize < len )
+ {
+ Truncate(nSize);
+ }
+ else if ( nSize > len )
+ {
+ *this += wxString(ch, nSize - len);
+ }
+ //else: we have exactly the specified length, nothing to do
+}
+
+void wxString::swap(wxString& str)
+{
+ // this is slightly less efficient than fiddling with m_pchData directly,
+ // but it is still quite efficient as we don't copy the string here because
+ // ref count always stays positive
+ wxString tmp = str;
+ str = *this;
+ *this = tmp;
+}
+
wxString& wxString::insert(size_t nPos, const wxString& str)
{
wxASSERT( str.GetStringData()->IsValid() );
#if !defined(__VISUALC__) || defined(__WIN32__)
size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
{
- return find(wxString(sz, n == npos ? 0 : n), nStart);
+ return find(wxString(sz, n), nStart);
}
#endif // VC++ 1.5
size_t wxString::rfind(const wxString& str, size_t nStart) const
{
wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= Len() );
+ wxASSERT( nStart == npos || nStart <= Len() );
// TODO could be made much quicker than that
const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
#if !defined(__VISUALC__) || defined(__WIN32__)
size_t wxString::rfind(const wxChar* sz, size_t nStart, size_t n) const
{
- return rfind(wxString(sz, n == npos ? 0 : n), nStart);
+ return rfind(wxString(sz, n == npos ? wxSTRING_MAXLEN : n), nStart);
}
size_t wxString::rfind(wxChar ch, size_t nStart) const
const wxChar *start = c_str() + nStart;
const wxChar *firstOf = wxStrpbrk(start, sz);
if ( firstOf )
- return firstOf - start;
+ return firstOf - c_str();
else
return npos;
}
return npos;
}
-wxString wxString::substr(size_t nStart, size_t nLen) const
-{
- // npos means 'take all'
- if ( nLen == npos )
- nLen = 0;
-
- wxASSERT( nStart + nLen <= Len() );
-
- return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
-}
-
wxString& wxString::erase(size_t nStart, size_t nLen)
{
wxString strTmp(c_str(), nStart);
wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
{
- wxASSERT( nStart + nLen <= wxStrlen(sz) );
+ wxASSERT_MSG( nStart + nLen <= Len(),
+ _T("index out of bounds in wxString::replace") );
wxString strTmp;
+ strTmp.Alloc(Len()); // micro optimisation to avoid multiple mem allocs
+
if ( nStart != 0 )
strTmp.append(c_str(), nStart);
- strTmp += sz;
- strTmp.append(c_str() + nStart + nLen);
+ strTmp << sz << c_str() + nStart + nLen;
*this = strTmp;
return *this;
// ArrayString
// ============================================================================
-// size increment = max(50% of current size, ARRAY_MAXSIZE_INCREMENT)
+// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
#define ARRAY_MAXSIZE_INCREMENT 4096
+
#ifndef ARRAY_DEFAULT_INITIAL_SIZE // also defined in dynarray.h
- #define ARRAY_DEFAULT_INITIAL_SIZE (16)
+#define ARRAY_DEFAULT_INITIAL_SIZE (16)
#endif
#define STRING(p) ((wxString *)(&(p)))
// ctor
-wxArrayString::wxArrayString(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;
}
Copy(src);
+ m_autoSort = src.m_autoSort;
+
return *this;
}
if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
Alloc(src.m_nCount);
- // we can't just copy the pointers here because otherwise we would share
- // the strings with another array because strings are ref counted
-#if 0
- if ( m_nCount != 0 )
- memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(wxChar *));
-#endif // 0
-
for ( size_t n = 0; n < src.m_nCount; n++ )
Add(src[n]);
-
- // if the other array is auto sorted too, we're already sorted, but
- // otherwise we should rearrange the items
- if ( m_autoSort && !src.m_autoSort )
- Sort();
}
// grow the array
-void wxArrayString::Grow()
+void wxArrayString::Grow(size_t nIncrement)
{
// only do it if no more place
- if( m_nCount == m_nSize ) {
- if( m_nSize == 0 ) {
+ if ( m_nCount == m_nSize ) {
+ // if ARRAY_DEFAULT_INITIAL_SIZE were set to 0, the initially empty would
+ // be never resized!
+ #if ARRAY_DEFAULT_INITIAL_SIZE == 0
+ #error "ARRAY_DEFAULT_INITIAL_SIZE must be > 0!"
+ #endif
+
+ if ( m_nSize == 0 ) {
// was empty, alloc some memory
m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
m_pItems = new wxChar *[m_nSize];
else {
// otherwise when it's called for the first time, nIncrement would be 0
// and the array would never be expanded
-#if defined(__VISAGECPP__) && defined(__WXDEBUG__)
- int array_size = ARRAY_DEFAULT_INITIAL_SIZE;
- wxASSERT( array_size != 0 );
-#else
- wxASSERT( ARRAY_DEFAULT_INITIAL_SIZE != 0 );
-#endif
-
// 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];
// 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();
}
}
+// return a wxString[] as required for some control ctors.
+wxString* wxArrayString::GetStringArray() const
+{
+ wxString *array = 0;
+
+ if( m_nCount > 0 )
+ {
+ array = new wxString[m_nCount];
+ for( size_t i = 0; i < m_nCount; i++ )
+ array[i] = m_pItems[i];
+ }
+
+ return array;
+}
+
// searches the array for an item (forward or backwards)
int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
{
}
// 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();
+ for (size_t i = 0; i < nInsert; i++)
+ {
+ // the string data must not be deleted!
+ str.GetStringData()->Lock();
- // just append
- m_pItems[m_nCount] = (wxChar *)str.c_str(); // const_cast
-
- 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();
+ 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
+void wxArrayString::SetCount(size_t count)
+{
+ Alloc(count);
- m_nCount++;
+ wxString s;
+ while ( m_nCount < count )
+ m_pItems[m_nCount++] = (wxChar *)s.c_str();
}
// removes item from array (by index)
-void wxArrayString::Remove(size_t nIndex)
+void wxArrayString::Remove(size_t nIndex, size_t nRemove)
{
- wxCHECK_RET( nIndex <= m_nCount, 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)
static bool gs_sortAscending = TRUE;
// function which is called by quick sort
-static int LINKAGEMODE wxStringCompareFunction(const void *first, const void *second)
+extern "C" int LINKAGEMODE
+wxStringCompareFunction(const void *first, const void *second)
{
wxString *strFirst = (wxString *)first;
wxString *strSecond = (wxString *)second;
DoSort();
+ // reset it to NULL so that Sort(bool) will work the next time
+ gs_compareFunction = NULL;
+
END_SORT();
}
qsort(m_pItems, m_nCount, sizeof(wxChar *), wxStringCompareFunction);
}
+bool wxArrayString::operator==(const wxArrayString& a) const
+{
+ if ( m_nCount != a.m_nCount )
+ return FALSE;
+
+ for ( size_t n = 0; n < m_nCount; n++ )
+ {
+ if ( Item(n) != a[n] )
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
projects / wxWidgets.git / blobdiff