X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f5fb6871865e08929a113dc23f8741023fdcae72..761952d9cbc4fef5810fccd8abe2b71b9e29a2a1:/src/common/string.cpp diff --git a/src/common/string.cpp b/src/common/string.cpp index 1c8fadcb69..ffae5b4e12 100644 --- a/src/common/string.cpp +++ b/src/common/string.cpp @@ -10,10 +10,6 @@ // 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()) @@ -43,6 +39,10 @@ #include #include +#ifndef __WXMSW__ +#include +#endif + #ifdef __SALFORDC__ #include #endif @@ -56,14 +56,9 @@ // 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 - #if !wxUSE_STL - const size_t wxStringBase::npos = wxSTRING_MAXLEN; + //According to STL _must_ be a -1 size_t + const size_t wxStringBase::npos = (size_t) -1; #endif // ---------------------------------------------------------------------------- @@ -136,8 +131,12 @@ wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str)) 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 @@ -209,7 +208,7 @@ void wxStringBase::InitWith(const wxChar *psz, size_t nPos, size_t nLength) wxFAIL_MSG( _T("out of memory in wxStringBase::InitWith") ); return; } - wxMemcpy(m_pchData, psz + nPos, nLength); + wxTmemcpy(m_pchData, psz + nPos, nLength); } } @@ -274,7 +273,7 @@ bool wxStringBase::CopyBeforeWrite() // allocation failures are handled by the caller return false; } - wxMemcpy(m_pchData, pData->data(), nLen); + wxTmemcpy(m_pchData, pData->data(), nLen); } wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner @@ -317,13 +316,15 @@ bool wxStringBase::AllocBeforeWrite(size_t nLen) 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; } @@ -331,7 +332,7 @@ wxStringBase& wxStringBase::append(size_t n, wxChar ch) { size_type len = length(); - if ( !CopyBeforeWrite() || !Alloc(len + n) ) { + if ( !Alloc(len + n) || !CopyBeforeWrite() ) { wxFAIL_MSG( _T("out of memory in wxStringBase::append") ); } GetStringData()->nDataLength = len + n; @@ -385,7 +386,9 @@ bool wxStringBase::Alloc(size_t nLen) // 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; @@ -432,35 +435,35 @@ wxStringBase::iterator wxStringBase::erase(iterator it) 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 ( !CopyBeforeWrite() || !Alloc(length() + n) ) { - 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) @@ -472,44 +475,50 @@ 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*)wxMemchr(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() && - wxMemcmp(p, str.c_str(), str.length()) ) - { - //anchor again - p = (const wxChar*)wxMemchr(++p, - str.c_str()[0], - length() - (p - c_str())); + 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; - if(!p) - return 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; + 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*)wxMemchr(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 @@ -534,7 +543,7 @@ size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const const wxChar *cursor = c_str() + top; do { - if ( wxMemcmp(cursor, str.c_str(), + if ( wxTmemcmp(cursor, str.c_str(), str.length()) == 0 ) { return cursor - c_str(); @@ -581,7 +590,7 @@ size_t wxStringBase::find_first_of(const wxChar* sz, size_t nStart) const size_t i; for(i = nStart; i < this->length(); ++i) { - if (wxMemchr(sz, *(c_str() + i), len)) + if (wxTmemchr(sz, *(c_str() + i), len)) break; } @@ -613,7 +622,7 @@ size_t wxStringBase::find_last_of(const wxChar* sz, size_t nStart) const for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p ) { - if ( wxMemchr(sz, *p, len) ) + if ( wxTmemchr(sz, *p, len) ) return p - c_str(); } @@ -642,7 +651,7 @@ size_t wxStringBase::find_first_not_of(const wxChar* sz, size_t nStart) const size_t i; for(i = nStart; i < this->length(); ++i) { - if (!wxMemchr(sz, *(c_str() + i), len)) + if (!wxTmemchr(sz, *(c_str() + i), len)) break; } @@ -686,7 +695,7 @@ size_t wxStringBase::find_last_not_of(const wxChar* sz, size_t nStart) const for ( const wxChar *p = c_str() + nStart; p >= c_str(); --p ) { - if ( !wxMemchr(sz, *p,len) ) + if ( !wxTmemchr(sz, *p,len) ) return p - c_str(); } @@ -730,10 +739,22 @@ wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen, 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; @@ -916,20 +937,17 @@ static inline int wxDoCmp(const wxChar* s1, size_t l1, const wxChar* s2, size_t l2) { if( l1 == l2 ) - return wxMemcmp(s1, s2, l1); + return wxTmemcmp(s1, s2, l1); else if( l1 < l2 ) { - int ret = wxMemcmp(s1, s2, l1); + int ret = wxTmemcmp(s1, s2, l1); return ret == 0 ? -1 : ret; } - else if( l1 > l2 ) + else { - int ret = wxMemcmp(s1, s2, l2); + int ret = wxTmemcmp(s1, s2, l2); return ret == 0 ? +1 : ret; } - - wxFAIL; // must never get there - return 0; // quiet compilers } int STRINGCLASS::compare(const wxStringBase& str) const @@ -1032,7 +1050,7 @@ wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength) size_t nRealSize; wxWCharBuffer theBuffer = conv.cMB2WC(psz, nLen, &nRealSize); - //Copy + //Copy if (nRealSize) assign( theBuffer.data() , nRealSize - 1 ); } @@ -1088,7 +1106,7 @@ wxString::wxString(const wchar_t *pwz, wxMBConv& conv, size_t nLength) size_t nRealSize; wxCharBuffer theBuffer = conv.cWC2MB(pwz, nLen, &nRealSize); - //Copy + //Copy if (nRealSize) assign( theBuffer.data() , nRealSize - 1 ); } @@ -1227,7 +1245,7 @@ wxString operator+(const wxString& str, const wxChar *psz) if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) { wxFAIL_MSG( _T("out of memory in wxString::operator+") ); } - s = str; + s += str; s += psz; return s; @@ -1286,7 +1304,7 @@ static inline int wxDoCmpNoCase(const wxChar* s1, size_t l1, } return i == l1 ? -1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1; } - else if( l1 > l2 ) + else { for(i = 0; i < l2; ++i) { @@ -1295,9 +1313,6 @@ static inline int wxDoCmpNoCase(const wxChar* s1, size_t l1, } return i == l2 ? 1 : wxTolower(s1[i]) < wxTolower(s2[i]) ? -1 : 1; } - - wxFAIL; // must never get there - return 0; // quiet compilers } int wxString::CmpNoCase(const wxString& s) const @@ -1382,32 +1397,33 @@ const wxCharBuffer wxString::ToAscii() const // 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 @@ -1513,55 +1529,46 @@ wxString wxString::AfterFirst(wxChar ch) const } // 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 @@ -1640,7 +1647,7 @@ inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); } wxString& wxString::Trim(bool bFromRight) { // first check if we're going to modify the string at all - if ( !IsEmpty() && + if ( !empty() && ( (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) || (!bFromRight && wxSafeIsspace(GetChar(0u))) @@ -1793,45 +1800,42 @@ wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr) 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 @@ -1842,6 +1846,16 @@ int wxString::PrintfV(const wxChar* pszFormat, va_list argptr) 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; } @@ -2029,6 +2043,24 @@ int wxString::sprintf(const wxChar *pszFormat, ...) #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) @@ -2206,6 +2238,11 @@ wxString* wxArrayString::GetStringArray() const return array; } +void wxArrayString::Remove(size_t nIndex, size_t nRemove) +{ + RemoveAt(nIndex, nRemove); +} + #endif // WXWIN_COMPATIBILITY_2_4 // searches the array for an item (forward or backwards) @@ -2460,7 +2497,11 @@ void wxArrayString::Sort(CompareFunction compareFunction) 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) {