#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
+ #ifndef wvsnprintf
+ #define wxUSE_EXPERIMENTAL_PRINTF 1
+ #endif
#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
wxChar dummy;
} g_strEmpty = { {-1, 0, 0}, wxT('\0') };
-#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
-
// empty C style string: points to 'string data' byte of g_strEmpty
extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
#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
#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
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, wxMBConv& conv)
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength)
{
// first get necessary size
- size_t nLen = pwz ? conv.WC2MB((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);
+ if ( !AllocBuffer(nLen) ) {
+ wxFAIL_MSG( _T("out of memory in wxString::wxString") );
+ return;
+ }
conv.WC2MB(m_pchData, pwz, nLen);
}
else {
// ---------------------------------------------------------------------------
// allocates memory needed to store a C string of length nLen
-void wxString::AllocBuffer(size_t nLen)
+bool wxString::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 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
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;
}
// 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 *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()
+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;
+ }
+
+ 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;
- // we rely on a reasonable realloc() implementation here - so far I haven't
- // seen any which wouldn't behave like this
+ m_pchData = pData->data();
+ }
+
+ pData->nAllocLength = nLen;
- wxASSERT( p != NULL ); // can't free memory?
- wxASSERT( p == pData ); // we're decrementing the size - block shouldn't move!
+ 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);
// ---------------------------------------------------------------------------
// 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;
}
// other common string functions
// ===========================================================================
+#if wxUSE_UNICODE
+
+wxString wxString::FromAscii(const char *ascii)
+{
+ if (!ascii)
+ return wxEmptyString;
+
+ size_t len = strlen( ascii );
+ wxString res;
+
+ if ( len )
+ {
+ wxStringBuffer buf(res, len);
+
+ wchar_t *dest = buf;
+
+ for ( ;; )
+ {
+ if ( (*dest++ = (wchar_t)(unsigned char)*ascii++) == L'\0' )
+ break;
+ }
+ }
+
+ return res;
+}
+
+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
+
// ---------------------------------------------------------------------------
// simple sub-string extraction
// ---------------------------------------------------------------------------
// 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;
}
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
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);
)
{
// 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 )
{
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;
// conversion to numbers
// ----------------------------------------------------------------------------
-bool wxString::ToLong(long *val) const
+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;
- *val = wxStrtol(start, &end, 10);
+ *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);
}
-bool wxString::ToULong(unsigned long *val) const
+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;
- *val = wxStrtoul(start, &end, 10);
+ *val = wxStrtoul(start, &end, base);
// return TRUE only if scan was stopped by the terminating NUL and if the
// string was not empty to start with
// 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
}
else if ( nSize > len )
{
- *this += wxString(ch, len - nSize);
+ *this += wxString(ch, nSize - len);
}
//else: we have exactly the specified length, nothing to do
}
// ref count always stays positive
wxString tmp = str;
str = *this;
- *this = str;
+ *this = tmp;
}
wxString& wxString::insert(size_t nPos, const wxString& str)
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
// 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;
}
}
// 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];
// 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];
// 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();
-
- // the string data must not be deleted!
- str.GetStringData()->Lock();
+ Grow(nInsert);
- // 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();
+ 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;
projects / wxWidgets.git / blobdiff