// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma implementation "string.h"
-#endif
-
/*
* About ref counting:
* 1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
#include <string.h>
#include <stdlib.h>
+#ifndef __WXMSW__
+#include <errno.h>
+#endif
+
#ifdef __SALFORDC__
#include <clib.h>
#endif
wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
{
- os << str.c_str();
- return os;
+#ifdef __BORLANDC__
+ os << str.mb_str();
+#else
+ os << str.c_str();
+#endif
+ return os;
}
#endif // wxUSE_STD_IOSTREAM
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
+ // it doesn't really matter what the string length is as it's going to be
+ // overwritten later but, for extra safety, set it to 0 for now as we may
+ // have some junk in m_pchData
+ GetStringData()->nDataLength = 0;
+
return true;
}
if ( pData->IsEmpty() ) {
nLen += EXTRA_ALLOC;
- wxStringData* pData = (wxStringData*)
- malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ pData = (wxStringData *)
+ malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
if ( pData == NULL ) {
// allocation failure handled by caller
// allocation failure handled by caller
return false;
}
- memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
+ // +1 to copy the terminator, too
+ memcpy(m_pchData, pData->data(), (nOldLen+1)*sizeof(wxChar));
+ GetStringData()->nDataLength = nOldLen;
}
else {
nLen += EXTRA_ALLOC;
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(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);
- swap(strTmp);
- return *this;
+ swap(strTmp);
+ return *this;
}
wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
{
- wxASSERT( nPos <= length() );
+ wxASSERT( nPos <= length() );
- if ( n == npos ) n = wxStrlen(sz);
- if ( n == 0 ) return *this;
+ if ( n == npos ) n = wxStrlen(sz);
+ if ( n == 0 ) return *this;
- if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
- wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
- }
+ if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
+ wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
+ }
- memmove(m_pchData + nPos + n, m_pchData + nPos,
- (length() - nPos) * sizeof(wxChar));
- memcpy(m_pchData + nPos, sz, n * sizeof(wxChar));
- GetStringData()->nDataLength = length() + n;
- m_pchData[length()] = '\0';
+ 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;
+ return *this;
}
void wxStringBase::swap(wxStringBase& str)
size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
{
- wxASSERT( str.GetStringData()->IsValid() );
- wxASSERT( nStart <= length() );
+ wxASSERT( str.GetStringData()->IsValid() );
+ wxASSERT( nStart <= length() );
- //anchor
- const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
- str.c_str()[0],
- length() - nStart);
+ //anchor
+ const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
+ str.c_str()[0],
+ length() - nStart);
- if(!p)
- return npos;
+ if(!p)
+ return npos;
- while(p - c_str() + str.length() <= length() &&
- wxTmemcmp(p, str.c_str(), str.length()) )
- {
- //Previosly passed as the first argument to wxTmemchr,
- //but C/C++ standard does not specify evaluation order
- //of arguments to functions -
- //http://embedded.com/showArticle.jhtml?articleID=9900607
- ++p;
-
- //anchor again
- p = (const wxChar*)wxTmemchr(p,
- str.c_str()[0],
- length() - (p - c_str()));
-
- if(!p)
- return npos;
- }
+ while(p - c_str() + str.length() <= length() &&
+ wxTmemcmp(p, str.c_str(), str.length()) )
+ {
+ //Previosly passed as the first argument to wxTmemchr,
+ //but C/C++ standard does not specify evaluation order
+ //of arguments to functions -
+ //http://embedded.com/showArticle.jhtml?articleID=9900607
+ ++p;
- return (p - c_str() + str.length() <= length()) ? p - c_str() : npos;
+ //anchor again
+ p = (const wxChar*)wxTmemchr(p,
+ str.c_str()[0],
+ length() - (p - c_str()));
+
+ if(!p)
+ return npos;
+ }
+
+ return (p - c_str() + str.length() <= length()) ? p - c_str() : npos;
}
size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
{
- return find(wxStringBase(sz, n), nStart);
+ return find(wxStringBase(sz, n), nStart);
}
size_t wxStringBase::find(wxChar ch, size_t nStart) const
{
- wxASSERT( nStart <= length() );
+ wxASSERT( nStart <= length() );
- const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
+ const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
- return p == NULL ? npos : p - c_str();
+ return p == NULL ? npos : p - c_str();
}
size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
wxStringBase strTmp;
strTmp.reserve(length()); // micro optimisation to avoid multiple mem allocs
- if ( nStart != 0 )
- strTmp.append(c_str(), nStart);
+ //This is kind of inefficient, but its pretty good considering...
+ //we don't want to use character access operators here because on STL
+ //it will freeze the reference count of strTmp, which means a deep copy
+ //at the end when swap is called
+ //
+ //Also, we can't use append with the full character pointer and must
+ //do it manually because this string can contain null characters
+ for(size_t i1 = 0; i1 < nStart; ++i1)
+ strTmp.append(1, this->c_str()[i1]);
+
+ //its safe to do the full version here because
+ //sz must be a normal c string
strTmp.append(sz);
- strTmp.append(c_str() + nStart + nLen);
+
+ for(size_t i2 = nStart + nLen; i2 < length(); ++i2)
+ strTmp.append(1, this->c_str()[i2]);
swap(strTmp);
return *this;
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
- size_t nLen = length();
+ size_t nLen = length();
- // default value of nCount is npos and means "till the end"
- if ( nCount == npos )
- {
- nCount = nLen - nFirst;
- }
+ // default value of nCount is npos and means "till the end"
+ if ( nCount == npos )
+ {
+ nCount = nLen - nFirst;
+ }
- // out-of-bounds requests return sensible things
- if ( nFirst + nCount > nLen )
- {
- nCount = nLen - nFirst;
- }
+ // out-of-bounds requests return sensible things
+ if ( nFirst + nCount > nLen )
+ {
+ nCount = nLen - nFirst;
+ }
- if ( nFirst > nLen )
- {
- // AllocCopy() will return empty string
- nCount = 0;
- }
+ if ( nFirst > nLen )
+ {
+ // AllocCopy() will return empty string
+ return wxEmptyString;
+ }
- wxString dest(*this, nFirst, nCount);
- if ( dest.length() != nCount ) {
- wxFAIL_MSG( _T("out of memory in wxString::Mid") );
- }
+ wxString dest(*this, nFirst, nCount);
+ if ( dest.length() != nCount )
+ {
+ wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ }
- return dest;
+ return dest;
}
// check that the string starts with prefix and return the rest of the string
}
// replace first (or all) occurences of some substring with another one
-size_t
-wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
+size_t wxString::Replace(const wxChar *szOld,
+ const wxChar *szNew, bool bReplaceAll)
{
// if we tried to replace an empty string we'd enter an infinite loop below
wxCHECK_MSG( szOld && *szOld && szNew, 0,
_T("wxString::Replace(): invalid parameter") );
- size_t uiCount = 0; // count of replacements made
+ size_t uiCount = 0; // count of replacements made
- size_t uiOldLen = wxStrlen(szOld);
+ size_t uiOldLen = wxStrlen(szOld);
+ size_t uiNewLen = wxStrlen(szNew);
- wxString strTemp;
- const wxChar *pCurrent = c_str();
- const wxChar *pSubstr;
- while ( *pCurrent != wxT('\0') ) {
- pSubstr = wxStrstr(pCurrent, szOld);
- if ( pSubstr == NULL ) {
- // strTemp is unused if no replacements were made, so avoid the copy
- if ( uiCount == 0 )
- return 0;
+ size_t dwPos = 0;
- strTemp += pCurrent; // copy the rest
- break; // exit the loop
- }
- else {
- // take chars before match
- size_type len = strTemp.length();
- strTemp.append(pCurrent, pSubstr - pCurrent);
- if ( strTemp.length() != (size_t)(len + pSubstr - pCurrent) ) {
- wxFAIL_MSG( _T("out of memory in wxString::Replace") );
- return 0;
- }
- strTemp += szNew;
- pCurrent = pSubstr + uiOldLen; // restart after match
+ while ( this->c_str()[dwPos] != wxT('\0') )
+ {
+ //DO NOT USE STRSTR HERE
+ //this string can contain embedded null characters,
+ //so strstr will function incorrectly
+ dwPos = find(szOld, dwPos);
+ if ( dwPos == npos )
+ break; // exit the loop
+ else
+ {
+ //replace this occurance of the old string with the new one
+ replace(dwPos, uiOldLen, szNew, uiNewLen);
- uiCount++;
+ //move up pos past the string that was replaced
+ dwPos += uiNewLen;
- // stop now?
- if ( !bReplaceAll ) {
- strTemp += pCurrent; // copy the rest
- break; // exit the loop
- }
- }
- }
+ //increase replace count
+ ++uiCount;
- // only done if there were replacements, otherwise would have returned above
- swap(strTemp);
+ // stop now?
+ if ( !bReplaceAll )
+ break; // exit the loop
+ }
+ }
- return uiCount;
+ return uiCount;
}
bool wxString::IsAscii() const
int wxString::Printf(const wxChar *pszFormat, ...)
{
- va_list argptr;
- va_start(argptr, pszFormat);
+ va_list argptr;
+ va_start(argptr, pszFormat);
- int iLen = PrintfV(pszFormat, argptr);
+ int iLen = PrintfV(pszFormat, argptr);
- va_end(argptr);
+ va_end(argptr);
- return iLen;
+ return iLen;
}
int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
int size = 1024;
- int len;
for ( ;; )
{
+ wxStringBuffer tmp(*this, size + 1);
+ wxChar* buf = tmp;
+
+ if ( !buf )
{
- wxStringBuffer tmp(*this, size + 1);
- wxChar* buf = tmp;
+ // out of memory
+ return -1;
+ }
- if ( !buf )
- {
- // out of memory
- return -1;
- }
+ // wxVsnprintf() may modify the original arg pointer, so pass it
+ // only a copy
+ va_list argptrcopy;
+ wxVaCopy(argptrcopy, argptr);
+ int len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
+ va_end(argptrcopy);
- // wxVsnprintf() may modify the original arg pointer, so pass it
- // only a copy
- va_list argptrcopy;
- wxVaCopy(argptrcopy, argptr);
- len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
- va_end(argptrcopy);
-
- // some implementations of vsnprintf() don't NUL terminate
- // the string if there is not enough space for it so
- // always do it manually
- buf[size] = _T('\0');
- }
+ // some implementations of vsnprintf() don't NUL terminate
+ // the string if there is not enough space for it so
+ // always do it manually
+ buf[size] = _T('\0');
// vsnprintf() may return either -1 (traditional Unix behaviour) or the
// total number of characters which would have been written if the
break;
}
+#ifdef EOVERFLOW
+ // if the error is not due to not having enough space (it could be e.g.
+ // EILSEQ), break too -- we'd just eat all available memory uselessly
+ if ( errno != EOVERFLOW )
+ {
+ // no sense in continuing
+ break;
+ }
+#endif // EOVERFLOW
+
// still not enough, double it again
size *= 2;
}
#include "wx/arrstr.h"
+wxArrayString::wxArrayString(size_t sz, const wxChar** a)
+{
+#if !wxUSE_STL
+ Init(false);
+#endif
+ for (size_t i=0; i < sz; i++)
+ Add(a[i]);
+}
+
+wxArrayString::wxArrayString(size_t sz, const wxString* a)
+{
+#if !wxUSE_STL
+ Init(false);
+#endif
+ for (size_t i=0; i < sz; i++)
+ Add(a[i]);
+}
+
#if !wxUSE_STL
// size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
END_SORT();
}
-typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first, const void *second);
+extern "C"
+{
+ typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first,
+ const void *second);
+}
void wxArrayString::Sort(CompareFunction2 compareFunction)
{
projects / wxWidgets.git / blobdiff