// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
-#pragma implementation "string.h"
+ #pragma implementation "string.h"
#endif
/*
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/defs.h"
-#include "wx/string.h"
+ #include "wx/defs.h"
+ #include "wx/string.h"
+ #include "wx/intl.h"
+ #include "wx/thread.h"
#endif
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
+#ifdef __SALFORDC__
+ #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
+#endif
+
+// allocating extra space for each string consumes more memory but speeds up
+// the concatenation operations (nLen is the current string's length)
+// NB: EXTRA_ALLOC must be >= 0!
+#define EXTRA_ALLOC (19 - nLen % 16)
+
// ---------------------------------------------------------------------------
// static class variables definition
// ---------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
- const size_t wxString::npos = STRING_MAXLEN;
-#endif
+#ifdef wxSTD_STRING_COMPATIBILITY
+ const size_t wxString::npos = wxSTRING_MAXLEN;
+#endif // wxSTD_STRING_COMPATIBILITY
-// ===========================================================================
-// static class data, special inlines
-// ===========================================================================
+// ----------------------------------------------------------------------------
+// static data
+// ----------------------------------------------------------------------------
+
+// for an empty string, GetStringData() will return this address: this
+// structure has the same layout as wxStringData and it's data() method will
+// return the empty string (dummy pointer)
+static const struct
+{
+ wxStringData data;
+ wxChar dummy;
+} g_strEmpty = { {-1, 0, 0}, wxT('\0') };
-// for an empty string, GetStringData() will return this address
-static int g_strEmpty[] = { -1, // ref count (locked)
- 0, // current length
- 0, // allocated memory
- 0 }; // string data
-// empty string shares memory with g_strEmpty
-static wxStringData *g_strNul = (wxStringData*)&g_strEmpty;
// empty C style string: points to 'string data' byte of g_strEmpty
-extern const char *g_szNul = (const char *)(&g_strEmpty[3]);
+extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
-// ===========================================================================
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+#if !defined(__WXSW__) && wxUSE_UNICODE
+ #ifdef wxUSE_EXPERIMENTAL_PRINTF
+ #undef wxUSE_EXPERIMENTAL_PRINTF
+ #endif
+ #define wxUSE_EXPERIMENTAL_PRINTF 1
+#endif
+
+// we want to find out if the current platform supports vsnprintf()-like
+// function: for Unix this is done with configure, for Windows we test the
+// compiler explicitly.
+//
+// FIXME currently, this is only for ANSI (!Unicode) strings, so we call this
+// function wxVsnprintfA (A for ANSI), should also find one for Unicode
+// strings in Unicode build
+#ifdef __WXMSW__
+ #if (defined(__VISUALC__) || defined(wxUSE_NORLANDER_HEADERS)) && !defined(__MINGW32__)
+ #define wxVsnprintfA _vsnprintf
+ #endif
+#else // !Windows
+ #ifdef HAVE_VSNPRINTF
+ #define wxVsnprintfA vsnprintf
+ #endif
+#endif // Windows/!Windows
+
+#ifndef wxVsnprintfA
+ // in this case we'll use vsprintf() (which is ANSI and thus should be
+ // always available), but it's unsafe because it doesn't check for buffer
+ // size - so give a warning
+ #define wxVsnprintfA(buf, len, format, arg) vsprintf(buf, format, arg)
+
+ #if defined(__VISUALC__)
+ #pragma message("Using sprintf() because no snprintf()-like function defined")
+ #elif defined(__GNUG__) && !defined(__UNIX__)
+ #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
+ // AIX has vsnprintf, but there's no prototype in the system headers.
+ extern "C" int vsnprintf(char* str, size_t n, const char* format, va_list ap);
+#endif
+
+// ----------------------------------------------------------------------------
// global functions
-// ===========================================================================
+// ----------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
+#if defined(wxSTD_STRING_COMPATIBILITY) && wxUSE_STD_IOSTREAM
// MS Visual C++ version 5.0 provides the new STL headers as well as the old
// iostream ones.
//
// ATTN: you can _not_ use both of these in the same program!
-#if 0 // def _MSC_VER
- #include <iostream>
- #define NAMESPACE std::
-#else
- #include <iostream.h>
- #define NAMESPACE
-#endif //Visual C++
-NAMESPACE istream& operator>>(NAMESPACE istream& is, wxString& WXUNUSED(str))
+istream& operator>>(istream& is, wxString& WXUNUSED(str))
{
#if 0
int w = is.width(0);
if ( is.ipfx(0) ) {
- NAMESPACE streambuf *sb = is.rdbuf();
+ streambuf *sb = is.rdbuf();
str.erase();
while ( true ) {
int ch = sb->sbumpc ();
if ( ch == EOF ) {
- is.setstate(NAMESPACE ios::eofbit);
+ is.setstate(ios::eofbit);
break;
}
else if ( isspace(ch) ) {
sb->sungetc();
break;
}
-
+
str += ch;
if ( --w == 1 )
break;
is.isfx();
if ( str.length() == 0 )
- is.setstate(NAMESPACE ios::failbit);
+ is.setstate(ios::failbit);
#endif
return is;
}
+ostream& operator<<(ostream& os, const wxString& str)
+{
+ os << str.c_str();
+ return os;
+}
+
#endif //std::string compatibility
-// ===========================================================================
-// wxString class core
-// ===========================================================================
+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(), iLen);
+ }
-// ---------------------------------------------------------------------------
-// construction
-// ---------------------------------------------------------------------------
+ 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;
+ }
-// construct an empty string
-wxString::wxString()
-{
- Init();
+ return rc;
+#endif // Unicode/ANSI
}
-// copy constructor
-wxString::wxString(const wxString& stringSrc)
+extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
+ const wxChar *format, ...)
{
- wxASSERT( stringSrc.GetStringData()->IsValid() );
+ va_list argptr;
+ va_start(argptr, format);
- if ( stringSrc.IsEmpty() ) {
- // nothing to do for an empty string
- Init();
- }
- else {
- m_pchData = stringSrc.m_pchData; // share same data
- GetStringData()->Lock(); // => one more copy
- }
+ int iLen = wxVsnprintf(buf, len, format, argptr);
+
+ va_end(argptr);
+
+ return iLen;
}
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// this small class is used to gather statistics for performance tuning
+//#define WXSTRING_STATISTICS
+#ifdef WXSTRING_STATISTICS
+ class Averager
+ {
+ public:
+ Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
+ ~Averager()
+ { printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
+
+ void Add(size_t n) { m_nTotal += n; m_nCount++; }
+
+ private:
+ size_t m_nCount, m_nTotal;
+ const char *m_sz;
+ } g_averageLength("allocation size"),
+ g_averageSummandLength("summand length"),
+ g_averageConcatHit("hit probability in concat"),
+ g_averageInitialLength("initial string length");
+
+ #define STATISTICS_ADD(av, val) g_average##av.Add(val)
+#else
+ #define STATISTICS_ADD(av, val)
+#endif // WXSTRING_STATISTICS
+
+// ===========================================================================
+// wxString class core
+// ===========================================================================
+
+// ---------------------------------------------------------------------------
+// construction
+// ---------------------------------------------------------------------------
+
// constructs string of <nLength> copies of character <ch>
-wxString::wxString(char ch, size_t nLength)
+wxString::wxString(wxChar ch, size_t nLength)
{
Init();
if ( nLength > 0 ) {
AllocBuffer(nLength);
- wxASSERT( sizeof(char) == 1 ); // can't use memset if not
-
+#if wxUSE_UNICODE
+ // memset only works on char
+ for (size_t n=0; n<nLength; n++) m_pchData[n] = ch;
+#else
memset(m_pchData, ch, nLength);
+#endif
}
}
// takes nLength elements of psz starting at nPos
-void wxString::InitWith(const char *psz, size_t nPos, size_t nLength)
+void wxString::InitWith(const wxChar *psz, size_t nPos, size_t nLength)
{
Init();
- wxASSERT( nPos <= Strlen(psz) );
+ wxASSERT( nPos <= wxStrlen(psz) );
- if ( nLength == STRING_MAXLEN )
- nLength = Strlen(psz + nPos);
+ if ( nLength == wxSTRING_MAXLEN )
+ nLength = wxStrlen(psz + nPos);
+
+ STATISTICS_ADD(InitialLength, nLength);
if ( nLength > 0 ) {
// trailing '\0' is written in AllocBuffer()
AllocBuffer(nLength);
- memcpy(m_pchData, psz + nPos, nLength*sizeof(char));
+ memcpy(m_pchData, psz + nPos, nLength*sizeof(wxChar));
}
}
-
-// take first nLength characters of C string psz
-// (default value of STRING_MAXLEN means take all the string)
-wxString::wxString(const char *psz, size_t nLength)
-{
- InitWith(psz, 0, nLength);
-}
-// the same as previous constructor, but for compilers using unsigned char
-wxString::wxString(const unsigned char* psz, size_t nLength)
-{
- InitWith((const char *)psz, 0, nLength);
-}
-
-#ifdef STD_STRING_COMPATIBILITY
-
-// ctor from a substring
-wxString::wxString(const wxString& s, size_t nPos, size_t nLen)
-{
- InitWith(s.c_str(), nPos, nLen == npos ? 0 : nLen);
-}
+#ifdef wxSTD_STRING_COMPATIBILITY
// poor man's iterators are "void *" pointers
wxString::wxString(const void *pStart, const void *pEnd)
{
- InitWith((const char *)pStart, 0,
- (const char *)pEnd - (const char *)pStart);
+ InitWith((const wxChar *)pStart, 0,
+ (const wxChar *)pEnd - (const wxChar *)pStart);
}
#endif //std::string compatibility
+#if wxUSE_UNICODE
+
+// from multibyte string
+wxString::wxString(const char *psz, wxMBConv& conv, size_t nLength)
+{
+ // first get necessary size
+ size_t nLen = psz ? conv.MB2WC((wchar_t *) NULL, psz, 0) : 0;
+
+ // nLength is number of *Unicode* characters here!
+ if ((nLen != (size_t)-1) && (nLen > nLength))
+ nLen = nLength;
+
+ // empty?
+ if ( (nLen != 0) && (nLen != (size_t)-1) ) {
+ AllocBuffer(nLen);
+ conv.MB2WC(m_pchData, psz, nLen);
+ }
+ else {
+ Init();
+ }
+}
+
+#else // ANSI
+
+#if wxUSE_WCHAR_T
// from wide string
wxString::wxString(const wchar_t *pwz)
{
// first get necessary size
- size_t nLen = wcstombs(NULL, pwz, 0);
+ size_t nLen = pwz ? wxWC2MB((char *) NULL, pwz, 0) : 0;
// empty?
- if ( nLen != 0 ) {
+ if ( (nLen != 0) && (nLen != (size_t)-1) ) {
AllocBuffer(nLen);
- wcstombs(m_pchData, pwz, nLen);
+ wxWC2MB(m_pchData, pwz, nLen);
}
else {
Init();
}
}
+#endif // wxUSE_WCHAR_T
+
+#endif // Unicode/ANSI
// ---------------------------------------------------------------------------
// memory allocation
// allocates memory needed to store a C string of length nLen
void wxString::AllocBuffer(size_t nLen)
{
- 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);
// allocate memory:
// 1) one extra character for '\0' termination
// 2) sizeof(wxStringData) for housekeeping info
- wxStringData* pData = (wxStringData*)new char[sizeof(wxStringData) +
- (nLen + 1)*sizeof(char)];
+ wxStringData* pData = (wxStringData*)
+ malloc(sizeof(wxStringData) + (nLen + EXTRA_ALLOC + 1)*sizeof(wxChar));
pData->nRefs = 1;
- pData->data()[nLen] = '\0';
pData->nDataLength = nLen;
- pData->nAllocLength = nLen;
+ pData->nAllocLength = nLen + EXTRA_ALLOC;
m_pchData = pData->data(); // data starts after wxStringData
-}
-
-// releases the string memory and reinits it
-void wxString::Reinit()
-{
- GetStringData()->Unlock();
- Init();
-}
-
-// wrapper around wxString::Reinit
-void wxString::Empty()
-{
- if ( GetStringData()->nDataLength != 0 )
- Reinit();
-
- wxASSERT( GetStringData()->nDataLength == 0 );
- wxASSERT( GetStringData()->nAllocLength == 0 );
+ m_pchData[nLen] = wxT('\0');
}
// must be called before changing this string
if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
- AllocBuffer(pData->nDataLength);
- memcpy(m_pchData, pData->data(), (pData->nDataLength + 1)*sizeof(char));
+ size_t nLen = pData->nDataLength;
+ AllocBuffer(nLen);
+ memcpy(m_pchData, pData->data(), nLen*sizeof(wxChar));
}
- wxASSERT( !pData->IsShared() ); // we must be the only owner
+ wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
}
// must be called before replacing contents of this string
wxASSERT( nLen != 0 ); // doesn't make any sense
// must not share string and must have enough space
- register wxStringData* pData = GetStringData();
- if ( pData->IsShared() || (nLen > pData->nAllocLength) ) {
+ wxStringData* pData = GetStringData();
+ if ( pData->IsShared() || pData->IsEmpty() ) {
// can't work with old buffer, get new one
pData->Unlock();
AllocBuffer(nLen);
}
+ else {
+ if ( nLen > pData->nAllocLength ) {
+ // realloc the buffer instead of calling malloc() again, this is more
+ // efficient
+ STATISTICS_ADD(Length, nLen);
+
+ 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;
+ }
+
+ 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
}
+// allocate enough memory for nLen characters
+void wxString::Alloc(size_t nLen)
+{
+ wxStringData *pData = GetStringData();
+ if ( pData->nAllocLength <= nLen ) {
+ if ( pData->IsEmpty() ) {
+ nLen += EXTRA_ALLOC;
+
+ wxStringData* pData = (wxStringData*)
+ malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+ pData->nRefs = 1;
+ pData->nDataLength = 0;
+ pData->nAllocLength = nLen;
+ m_pchData = pData->data(); // data starts after wxStringData
+ m_pchData[0u] = wxT('\0');
+ }
+ else if ( pData->IsShared() ) {
+ pData->Unlock(); // memory not freed because shared
+ size_t nOldLen = pData->nDataLength;
+ AllocBuffer(nLen);
+ memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
+ }
+ else {
+ nLen += EXTRA_ALLOC;
+
+ wxStringData *pDataOld = pData;
+ wxStringData *p = (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;
+ }
+
+ // 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();
+ }
+ }
+ //else: we've already got enough
+}
+
+// shrink to minimal size (releasing extra memory)
+void 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));
+
+ // we rely on a reasonable realloc() implementation here - so far I haven't
+ // seen any which wouldn't behave like this
+
+ wxASSERT( p != NULL ); // can't free memory?
+ wxASSERT( p == pData ); // we're decrementing the size - block shouldn't move!
+}
+
// get the pointer to writable buffer of (at least) nLen bytes
-char *wxString::GetWriteBuf(size_t nLen)
+wxChar *wxString::GetWriteBuf(size_t nLen)
{
AllocBeforeWrite(nLen);
+
+ wxASSERT( GetStringData()->nRefs == 1 );
+ GetStringData()->Validate(FALSE);
+
return m_pchData;
}
-// dtor frees memory if no other strings use it
-wxString::~wxString()
+// put string back in a reasonable state after GetWriteBuf
+void wxString::UngetWriteBuf()
{
- GetStringData()->Unlock();
+ GetStringData()->nDataLength = wxStrlen(m_pchData);
+ GetStringData()->Validate(TRUE);
}
// ---------------------------------------------------------------------------
// assignment operators
// ---------------------------------------------------------------------------
-// helper function: does real copy
-void wxString::AssignCopy(size_t nSrcLen, const char *pszSrcData)
+// helper function: does real copy
+void wxString::AssignCopy(size_t nSrcLen, const wxChar *pszSrcData)
{
if ( nSrcLen == 0 ) {
Reinit();
}
else {
AllocBeforeWrite(nSrcLen);
- memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(char));
+ memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
GetStringData()->nDataLength = nSrcLen;
- m_pchData[nSrcLen] = '\0';
+ m_pchData[nSrcLen] = wxT('\0');
}
}
// assigns one string to another
wxString& wxString::operator=(const wxString& stringSrc)
{
+ wxASSERT( stringSrc.GetStringData()->IsValid() );
+
// don't copy string over itself
if ( m_pchData != stringSrc.m_pchData ) {
if ( stringSrc.GetStringData()->IsEmpty() ) {
}
// assigns a single character
-wxString& wxString::operator=(char ch)
+wxString& wxString::operator=(wxChar ch)
{
AssignCopy(1, &ch);
return *this;
}
// assigns C string
-wxString& wxString::operator=(const char *psz)
+wxString& wxString::operator=(const wxChar *psz)
{
- AssignCopy(Strlen(psz), psz);
+ AssignCopy(wxStrlen(psz), psz);
return *this;
}
+#if !wxUSE_UNICODE
+
// same as 'signed char' variant
wxString& wxString::operator=(const unsigned char* psz)
{
return *this;
}
+#if wxUSE_WCHAR_T
wxString& wxString::operator=(const wchar_t *pwz)
{
wxString str(pwz);
*this = str;
return *this;
}
+#endif
+
+#endif
// ---------------------------------------------------------------------------
// string concatenation
// ---------------------------------------------------------------------------
-// concatenate two sources
-// NB: assume that 'this' is a new wxString object
-void wxString::ConcatCopy(int nSrc1Len, const char *pszSrc1Data,
- int nSrc2Len, const char *pszSrc2Data)
-{
- int nNewLen = nSrc1Len + nSrc2Len;
- if ( nNewLen != 0 )
- {
- AllocBuffer(nNewLen);
- memcpy(m_pchData, pszSrc1Data, nSrc1Len*sizeof(char));
- memcpy(m_pchData + nSrc1Len, pszSrc2Data, nSrc2Len*sizeof(char));
- }
-}
-
// add something to this string
-void wxString::ConcatSelf(int nSrcLen, const char *pszSrcData)
+void wxString::ConcatSelf(int nSrcLen, const wxChar *pszSrcData)
{
+ STATISTICS_ADD(SummandLength, nSrcLen);
+
// concatenating an empty string is a NOP
- if ( nSrcLen != 0 ) {
- register wxStringData *pData = GetStringData();
+ if ( nSrcLen > 0 ) {
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+ size_t nNewLen = nLen + nSrcLen;
// alloc new buffer if current is too small
- if ( pData->IsShared() ||
- pData->nDataLength + nSrcLen > pData->nAllocLength ) {
- // we have to grow the buffer, use the ConcatCopy routine
- // (which will allocate memory)
+ if ( pData->IsShared() ) {
+ STATISTICS_ADD(ConcatHit, 0);
+
+ // we have to allocate another buffer
wxStringData* pOldData = GetStringData();
- ConcatCopy(pOldData->nDataLength, m_pchData, nSrcLen, pszSrcData);
+ AllocBuffer(nNewLen);
+ memcpy(m_pchData, pOldData->data(), nLen*sizeof(wxChar));
pOldData->Unlock();
}
- else {
- // fast concatenation when buffer big enough
- memcpy(m_pchData + pData->nDataLength, pszSrcData, nSrcLen*sizeof(char));
- pData->nDataLength += nSrcLen;
+ else if ( nNewLen > pData->nAllocLength ) {
+ STATISTICS_ADD(ConcatHit, 0);
- // should be enough space
- wxASSERT( pData->nDataLength <= pData->nAllocLength );
-
- m_pchData[pData->nDataLength] = '\0'; // put terminating '\0'
+ // we have to grow the buffer
+ Alloc(nNewLen);
}
- }
-}
+ else {
+ STATISTICS_ADD(ConcatHit, 1);
-/*
- * string may be concatenated with other string, C string or a character
- */
+ // the buffer is already big enough
+ }
-void wxString::operator+=(const wxString& string)
-{
- ConcatSelf(string.Len(), string);
-}
+ // should be enough space
+ wxASSERT( nNewLen <= GetStringData()->nAllocLength );
-void wxString::operator+=(const char *psz)
-{
- ConcatSelf(Strlen(psz), psz);
-}
+ // fast concatenation - all is done in our buffer
+ memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
-void wxString::operator+=(char ch)
-{
- ConcatSelf(1, &ch);
+ m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
+ GetStringData()->nDataLength = nNewLen; // and fix the length
+ }
+ //else: the string to append was empty
}
/*
- * Same as above but return the result
- */
-
-wxString& wxString::operator<<(const wxString& string)
-{
- ConcatSelf(string.Len(), string);
- return *this;
-}
-
-wxString& wxString::operator<<(const char *psz)
-{
- ConcatSelf(Strlen(psz), psz);
- return *this;
-}
-
-wxString& wxString::operator<<(char ch)
-{
- ConcatSelf(1, &ch);
- return *this;
-}
-
-/*
* concatenation functions come in 5 flavours:
* string + string
* char + string and string + char
wxString operator+(const wxString& string1, const wxString& string2)
{
- wxString s;
- s.ConcatCopy(string1.GetStringData()->nDataLength, string1.m_pchData,
- string2.GetStringData()->nDataLength, string2.m_pchData);
+ wxASSERT( string1.GetStringData()->IsValid() );
+ wxASSERT( string2.GetStringData()->IsValid() );
+
+ wxString s = string1;
+ s += string2;
+
return s;
}
-wxString operator+(const wxString& string1, char ch)
+wxString operator+(const wxString& string, wxChar ch)
{
- wxString s;
- s.ConcatCopy(string1.GetStringData()->nDataLength, string1.m_pchData, 1, &ch);
+ wxASSERT( string.GetStringData()->IsValid() );
+
+ wxString s = string;
+ s += ch;
+
return s;
}
-wxString operator+(char ch, const wxString& string)
+wxString operator+(wxChar ch, const wxString& string)
{
- wxString s;
- s.ConcatCopy(1, &ch, string.GetStringData()->nDataLength, string.m_pchData);
+ wxASSERT( string.GetStringData()->IsValid() );
+
+ wxString s = ch;
+ s += string;
+
return s;
}
-wxString operator+(const wxString& string, const char *psz)
+wxString operator+(const wxString& string, const wxChar *psz)
{
+ wxASSERT( string.GetStringData()->IsValid() );
+
wxString s;
- s.ConcatCopy(string.GetStringData()->nDataLength, string.m_pchData,
- Strlen(psz), psz);
+ s.Alloc(wxStrlen(psz) + string.Len());
+ s = string;
+ s += psz;
+
return s;
}
-wxString operator+(const char *psz, const wxString& string)
+wxString operator+(const wxChar *psz, const wxString& string)
{
+ wxASSERT( string.GetStringData()->IsValid() );
+
wxString s;
- s.ConcatCopy(Strlen(psz), psz,
- string.GetStringData()->nDataLength, string.m_pchData);
+ s.Alloc(wxStrlen(psz) + string.Len());
+ s = psz;
+ s += string;
+
return s;
}
// helper function: clone the data attached to this string
void wxString::AllocCopy(wxString& dest, int nCopyLen, int nCopyIndex) const
{
- if ( nCopyLen == 0 )
- {
+ if ( nCopyLen == 0 ) {
dest.Init();
}
- else
- {
+ else {
dest.AllocBuffer(nCopyLen);
- memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(char));
+ memcpy(dest.m_pchData, m_pchData + nCopyIndex, nCopyLen*sizeof(wxChar));
}
}
// extract string of length nCount starting at nFirst
-// default value of nCount is 0 and means "till the end"
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+
+ // default value of nCount is wxSTRING_MAXLEN and means "till the end"
+ if ( nCount == wxSTRING_MAXLEN )
+ {
+ nCount = nLen - nFirst;
+ }
+
// out-of-bounds requests return sensible things
- if ( nCount == 0 )
- nCount = GetStringData()->nDataLength - nFirst;
+ if ( nFirst + nCount > nLen )
+ {
+ nCount = nLen - nFirst;
+ }
- if ( nFirst + nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength - nFirst;
- if ( nFirst > (size_t)GetStringData()->nDataLength )
+ if ( nFirst > nLen )
+ {
+ // AllocCopy() will return empty string
nCount = 0;
+ }
wxString dest;
AllocCopy(dest, nCount, nFirst);
+
return dest;
}
// get all characters after the last occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::Right(char ch) const
+wxString wxString::AfterLast(wxChar ch) const
{
wxString str;
int iPos = Find(ch, TRUE);
- if ( iPos == NOT_FOUND )
+ if ( iPos == wxNOT_FOUND )
str = *this;
else
str = c_str() + iPos + 1;
// get all characters before the first occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::Left(char ch) const
+wxString wxString::BeforeFirst(wxChar ch) const
{
wxString str;
- for ( const char *pc = m_pchData; *pc != '\0' && *pc != ch; pc++ )
+ for ( const wxChar *pc = m_pchData; *pc != wxT('\0') && *pc != ch; pc++ )
str += *pc;
return str;
/// get all characters before the last occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::Before(char ch) const
+wxString wxString::BeforeLast(wxChar ch) const
{
wxString str;
int iPos = Find(ch, TRUE);
- if ( iPos != NOT_FOUND && iPos != 0 )
+ if ( iPos != wxNOT_FOUND && iPos != 0 )
str = wxString(c_str(), iPos);
return str;
/// get all characters after the first occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::After(char ch) const
+wxString wxString::AfterFirst(wxChar ch) const
{
wxString str;
int iPos = Find(ch);
- if ( iPos != NOT_FOUND )
+ if ( iPos != wxNOT_FOUND )
str = c_str() + iPos + 1;
return str;
}
// replace first (or all) occurences of some substring with another one
-uint wxString::Replace(const char *szOld, const char *szNew, bool bReplaceAll)
+size_t wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
{
- uint uiCount = 0; // count of replacements made
+ size_t uiCount = 0; // count of replacements made
- uint uiOldLen = Strlen(szOld);
+ size_t uiOldLen = wxStrlen(szOld);
wxString strTemp;
- const char *pCurrent = m_pchData;
- const char *pSubstr;
- while ( *pCurrent != '\0' ) {
- pSubstr = strstr(pCurrent, szOld);
+ const wxChar *pCurrent = m_pchData;
+ 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 )
bool wxString::IsAscii() const
{
- const char *s = (const char*) *this;
+ const wxChar *s = (const wxChar*) *this;
while(*s){
if(!isascii(*s)) return(FALSE);
s++;
}
return(TRUE);
}
-
+
bool wxString::IsWord() const
{
- const char *s = (const char*) *this;
+ const wxChar *s = (const wxChar*) *this;
while(*s){
- if(!isalpha(*s)) return(FALSE);
+ if(!wxIsalpha(*s)) return(FALSE);
s++;
}
return(TRUE);
}
-
+
bool wxString::IsNumber() const
{
- const char *s = (const char*) *this;
+ const wxChar *s = (const wxChar*) *this;
while(*s){
- if(!isdigit(*s)) return(FALSE);
+ if(!wxIsdigit(*s)) return(FALSE);
s++;
}
return(TRUE);
}
-// kludge: we don't have declaraton of wxStringData here, so we add offsets
-// manually to get to the "length" field of wxStringData structure
-bool wxString::IsEmpty() const { return Len() == 0; }
-
wxString wxString::Strip(stripType w) const
{
wxString s = *this;
return s;
}
-/// case-insensitive strcmp() (platform independent)
-int Stricmp(const char *psz1, const char *psz2)
-{
-#if defined(_MSC_VER)
- return _stricmp(psz1, psz2);
-#elif defined(__BORLANDC__)
- return stricmp(psz1, psz2);
-#elif defined(__UNIX__) || defined(__GNUWIN32__)
- return strcasecmp(psz1, psz2);
-#else
- // almost all compilers/libraries provide this function (unfortunately under
- // different names), that's why we don't implement our own which will surely
- // be more efficient than this code (uncomment to use):
- /*
- register char c1, c2;
- do {
- c1 = tolower(*psz1++);
- c2 = tolower(*psz2++);
- } while ( c1 && (c1 == c2) );
-
- return c1 - c2;
- */
-
- #error "Please define string case-insensitive compare for your OS/compiler"
-#endif // OS/compiler
-}
-
// ---------------------------------------------------------------------------
// case conversion
// ---------------------------------------------------------------------------
{
CopyBeforeWrite();
- for ( char *p = m_pchData; *p; p++ )
- *p = (char)toupper(*p);
+ for ( wxChar *p = m_pchData; *p; p++ )
+ *p = (wxChar)wxToupper(*p);
return *this;
}
wxString& wxString::MakeLower()
{
CopyBeforeWrite();
-
- for ( char *p = m_pchData; *p; p++ )
- *p = (char)tolower(*p);
+
+ for ( wxChar *p = m_pchData; *p; p++ )
+ *p = (wxChar)wxTolower(*p);
return *this;
}
// trims spaces (in the sense of isspace) from left or right side
wxString& wxString::Trim(bool bFromRight)
{
- CopyBeforeWrite();
-
- if ( bFromRight )
+ // first check if we're going to modify the string at all
+ if ( !IsEmpty() &&
+ (
+ (bFromRight && wxIsspace(GetChar(Len() - 1))) ||
+ (!bFromRight && wxIsspace(GetChar(0u)))
+ )
+ )
{
- // find last non-space character
- char *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( isspace(*psz) && (psz >= m_pchData) )
- psz--;
-
- // truncate at trailing space start
- *++psz = '\0';
- GetStringData()->nDataLength = psz - m_pchData;
- }
- else
- {
- // find first non-space character
- const char *psz = m_pchData;
- while ( isspace(*psz) )
- psz++;
-
- // fix up data and length
- int nDataLength = GetStringData()->nDataLength - (psz - m_pchData);
- memmove(m_pchData, psz, (nDataLength + 1)*sizeof(char));
- GetStringData()->nDataLength = nDataLength;
+ // ok, there is at least one space to trim
+ CopyBeforeWrite();
+
+ if ( bFromRight )
+ {
+ // find last non-space character
+ wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
+ while ( wxIsspace(*psz) && (psz >= m_pchData) )
+ psz--;
+
+ // truncate at trailing space start
+ *++psz = wxT('\0');
+ GetStringData()->nDataLength = psz - m_pchData;
+ }
+ else
+ {
+ // find first non-space character
+ const wxChar *psz = m_pchData;
+ while ( wxIsspace(*psz) )
+ psz++;
+
+ // fix up data and length
+ int nDataLength = GetStringData()->nDataLength - (psz - (const wxChar*) m_pchData);
+ memmove(m_pchData, psz, (nDataLength + 1)*sizeof(wxChar));
+ GetStringData()->nDataLength = nDataLength;
+ }
}
return *this;
}
// adds nCount characters chPad to the string from either side
-wxString& wxString::Pad(size_t nCount, char chPad, bool bFromRight)
+wxString& wxString::Pad(size_t nCount, wxChar chPad, bool bFromRight)
{
wxString s(chPad, nCount);
// truncate the string
wxString& wxString::Truncate(size_t uiLen)
{
- *(m_pchData + uiLen) = '\0';
- GetStringData()->nDataLength = uiLen;
+ if ( uiLen < Len() ) {
+ CopyBeforeWrite();
+
+ *(m_pchData + uiLen) = wxT('\0');
+ GetStringData()->nDataLength = uiLen;
+ }
+ //else: nothing to do, string is already short enough
return *this;
}
// ---------------------------------------------------------------------------
-// finding (return NOT_FOUND if not found and index otherwise)
+// finding (return wxNOT_FOUND if not found and index otherwise)
// ---------------------------------------------------------------------------
// find a character
-int wxString::Find(char ch, bool bFromEnd) const
+int wxString::Find(wxChar ch, bool bFromEnd) const
{
- const char *psz = bFromEnd ? strrchr(m_pchData, ch) : strchr(m_pchData, ch);
+ const wxChar *psz = bFromEnd ? wxStrrchr(m_pchData, ch) : wxStrchr(m_pchData, ch);
- return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+ return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
}
// find a sub-string (like strstr)
-int wxString::Find(const char *pszSub) const
+int wxString::Find(const wxChar *pszSub) const
{
- const char *psz = strstr(m_pchData, pszSub);
+ const wxChar *psz = wxStrstr(m_pchData, pszSub);
+
+ return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
+}
+
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+bool wxString::ToLong(long *val) const
+{
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtol(start, &end, 10);
+
+ // 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
+{
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtoul(start, &end, 10);
+
+ // 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::ToDouble(double *val) const
+{
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToDouble") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtod(start, &end);
- return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+ // 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
// ---------------------------------------------------------------------------
-int wxString::Printf(const char *pszFormat, ...)
+
+/* 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.Printf(pszFormat, argptr);
+ return s;
+}
+
+int wxString::Printf(const wxChar *pszFormat, ...)
{
va_list argptr;
va_start(argptr, pszFormat);
return iLen;
}
-int wxString::PrintfV(const char* pszFormat, va_list argptr)
+int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
- static char s_szScratch[1024];
+#if wxUSE_EXPERIMENTAL_PRINTF
+ // the new implementation
- int iLen = vsprintf(s_szScratch, pszFormat, argptr);
- AllocBeforeWrite(iLen);
- strcpy(m_pchData, s_szScratch);
+ // buffer to avoid dynamic memory allocation each time for small strings
+ char szScratch[1024];
- return iLen;
+ Reinit();
+ for (size_t n = 0; pszFormat[n]; n++)
+ if (pszFormat[n] == wxT('%')) {
+ static char s_szFlags[256] = "%";
+ size_t flagofs = 1;
+ bool adj_left = FALSE, in_prec = FALSE,
+ prec_dot = FALSE, done = FALSE;
+ int ilen = 0;
+ size_t min_width = 0, max_width = wxSTRING_MAXLEN;
+ do {
+#define CHECK_PREC if (in_prec && !prec_dot) { s_szFlags[flagofs++] = '.'; prec_dot = TRUE; }
+ switch (pszFormat[++n]) {
+ case wxT('\0'):
+ done = TRUE;
+ break;
+ case wxT('%'):
+ *this += wxT('%');
+ done = TRUE;
+ break;
+ case wxT('#'):
+ case wxT('0'):
+ case wxT(' '):
+ case wxT('+'):
+ case wxT('\''):
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ break;
+ case wxT('-'):
+ CHECK_PREC
+ adj_left = TRUE;
+ s_szFlags[flagofs++] = pszFormat[n];
+ break;
+ case wxT('.'):
+ CHECK_PREC
+ in_prec = TRUE;
+ prec_dot = FALSE;
+ max_width = 0;
+ // dot will be auto-added to s_szFlags if non-negative number follows
+ break;
+ case wxT('h'):
+ ilen = -1;
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ break;
+ case wxT('l'):
+ ilen = 1;
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ break;
+ case wxT('q'):
+ case wxT('L'):
+ ilen = 2;
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ break;
+ case wxT('Z'):
+ ilen = 3;
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ break;
+ case wxT('*'):
+ {
+ int len = va_arg(argptr, int);
+ if (in_prec) {
+ if (len<0) break;
+ CHECK_PREC
+ max_width = len;
+ } else {
+ if (len<0) {
+ adj_left = !adj_left;
+ s_szFlags[flagofs++] = '-';
+ len = -len;
+ }
+ min_width = len;
+ }
+ flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
+ }
+ break;
+ case wxT('1'): case wxT('2'): case wxT('3'):
+ case wxT('4'): case wxT('5'): case wxT('6'):
+ case wxT('7'): case wxT('8'): case wxT('9'):
+ {
+ int len = 0;
+ CHECK_PREC
+ while ((pszFormat[n]>=wxT('0')) && (pszFormat[n]<=wxT('9'))) {
+ s_szFlags[flagofs++] = pszFormat[n];
+ len = len*10 + (pszFormat[n] - wxT('0'));
+ n++;
+ }
+ if (in_prec) max_width = len;
+ else min_width = len;
+ n--; // the main loop pre-increments n again
+ }
+ break;
+ case wxT('d'):
+ case wxT('i'):
+ case wxT('o'):
+ case wxT('u'):
+ case wxT('x'):
+ case wxT('X'):
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ s_szFlags[flagofs] = '\0';
+ if (ilen == 0 ) {
+ int val = va_arg(argptr, int);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else if (ilen == -1) {
+ short int val = va_arg(argptr, short int);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else if (ilen == 1) {
+ long int val = va_arg(argptr, long int);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ else if (ilen == 2) {
+#if SIZEOF_LONG_LONG
+ long long int val = va_arg(argptr, long long int);
+ ::sprintf(szScratch, s_szFlags, val);
+#else
+ long int val = va_arg(argptr, long int);
+ ::sprintf(szScratch, s_szFlags, val);
+#endif
+ }
+ else if (ilen == 3) {
+ size_t val = va_arg(argptr, size_t);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ *this += wxString(szScratch);
+ done = TRUE;
+ break;
+ case wxT('e'):
+ case wxT('E'):
+ case wxT('f'):
+ case wxT('g'):
+ case wxT('G'):
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ s_szFlags[flagofs] = '\0';
+ if (ilen == 2) {
+ long double val = va_arg(argptr, long double);
+ ::sprintf(szScratch, s_szFlags, val);
+ } else {
+ double val = va_arg(argptr, double);
+ ::sprintf(szScratch, s_szFlags, val);
+ }
+ *this += wxString(szScratch);
+ done = TRUE;
+ break;
+ case wxT('p'):
+ {
+ void *val = va_arg(argptr, void *);
+ CHECK_PREC
+ s_szFlags[flagofs++] = pszFormat[n];
+ s_szFlags[flagofs] = '\0';
+ ::sprintf(szScratch, s_szFlags, val);
+ *this += wxString(szScratch);
+ done = TRUE;
+ }
+ break;
+ case wxT('c'):
+ {
+ wxChar val = va_arg(argptr, int);
+ // we don't need to honor padding here, do we?
+ *this += val;
+ done = TRUE;
+ }
+ break;
+ case wxT('s'):
+ if (ilen == -1) {
+ // wx extension: we'll let %hs mean non-Unicode strings
+ char *val = va_arg(argptr, char *);
+#if wxUSE_UNICODE
+ // ASCII->Unicode constructor handles max_width right
+ wxString s(val, wxConvLibc, max_width);
+#else
+ size_t len = wxSTRING_MAXLEN;
+ if (val) {
+ for (len = 0; val[len] && (len<max_width); len++);
+ } else val = wxT("(null)");
+ wxString s(val, len);
+#endif
+ if (s.Len() < min_width)
+ s.Pad(min_width - s.Len(), wxT(' '), adj_left);
+ *this += s;
+ } else {
+ wxChar *val = va_arg(argptr, wxChar *);
+ size_t len = wxSTRING_MAXLEN;
+ if (val) {
+ for (len = 0; val[len] && (len<max_width); len++);
+ } else val = wxT("(null)");
+ wxString s(val, len);
+ if (s.Len() < min_width)
+ s.Pad(min_width - s.Len(), wxT(' '), adj_left);
+ *this += s;
+ }
+ done = TRUE;
+ break;
+ case wxT('n'):
+ if (ilen == 0) {
+ int *val = va_arg(argptr, int *);
+ *val = Len();
+ }
+ else if (ilen == -1) {
+ short int *val = va_arg(argptr, short int *);
+ *val = Len();
+ }
+ else if (ilen >= 1) {
+ long int *val = va_arg(argptr, long int *);
+ *val = Len();
+ }
+ done = TRUE;
+ break;
+ default:
+ if (wxIsalpha(pszFormat[n]))
+ // probably some flag not taken care of here yet
+ s_szFlags[flagofs++] = pszFormat[n];
+ else {
+ // bad format
+ *this += wxT('%'); // just to pass the glibc tst-printf.c
+ n--;
+ done = TRUE;
+ }
+ break;
+ }
+#undef CHECK_PREC
+ } while (!done);
+ } else *this += pszFormat[n];
+
+#else
+ // buffer to avoid dynamic memory allocation each time for small strings
+ char szScratch[1024];
+
+ // NB: wxVsnprintf() may return either less than the buffer size or -1 if
+ // there is not enough place depending on implementation
+ int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), pszFormat, argptr);
+ if ( iLen != -1 ) {
+ // the whole string is in szScratch
+ *this = szScratch;
+ }
+ else {
+ bool outOfMemory = FALSE;
+ int size = 2*WXSIZEOF(szScratch);
+ while ( !outOfMemory ) {
+ char *buf = GetWriteBuf(size);
+ if ( buf )
+ iLen = wxVsnprintfA(buf, size, pszFormat, argptr);
+ else
+ outOfMemory = TRUE;
+
+ UngetWriteBuf();
+
+ if ( iLen != -1 ) {
+ // ok, there was enough space
+ break;
+ }
+
+ // still not enough, double it again
+ size *= 2;
+ }
+
+ if ( outOfMemory ) {
+ // out of memory
+ return -1;
+ }
+ }
+#endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
+
+ return Len();
}
-#if 0
-int wxString::Scanf(const char *pszFormat, ...) const
+// ----------------------------------------------------------------------------
+// misc other operations
+// ----------------------------------------------------------------------------
+
+// returns TRUE if the string matches the pattern which may contain '*' and
+// '?' metacharacters (as usual, '?' matches any character and '*' any number
+// of them)
+bool wxString::Matches(const wxChar *pszMask) const
{
- va_list argptr;
- va_start(argptr, pszFormat);
+ // check char by char
+ const wxChar *pszTxt;
+ for ( pszTxt = c_str(); *pszMask != wxT('\0'); pszMask++, pszTxt++ ) {
+ switch ( *pszMask ) {
+ case wxT('?'):
+ if ( *pszTxt == wxT('\0') )
+ return FALSE;
- int iLen = ScanfV(pszFormat, argptr);
+ // pszText and pszMask will be incremented in the loop statement
- va_end(argptr);
+ break;
- return iLen;
+ case wxT('*'):
+ {
+ // ignore special chars immediately following this one
+ while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
+ pszMask++;
+
+ // if there is nothing more, match
+ if ( *pszMask == wxT('\0') )
+ return TRUE;
+
+ // are there any other metacharacters in the mask?
+ size_t uiLenMask;
+ const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));
+
+ if ( pEndMask != NULL ) {
+ // we have to match the string between two metachars
+ uiLenMask = pEndMask - pszMask;
+ }
+ else {
+ // we have to match the remainder of the string
+ uiLenMask = wxStrlen(pszMask);
+ }
+
+ wxString strToMatch(pszMask, uiLenMask);
+ const wxChar* pMatch = wxStrstr(pszTxt, strToMatch);
+ if ( pMatch == NULL )
+ return FALSE;
+
+ // -1 to compensate "++" in the loop
+ pszTxt = pMatch + uiLenMask - 1;
+ pszMask += uiLenMask - 1;
+ }
+ break;
+
+ default:
+ if ( *pszMask != *pszTxt )
+ return FALSE;
+ break;
+ }
+ }
+
+ // match only if nothing left
+ return *pszTxt == wxT('\0');
}
-int wxString::ScanfV(const char *pszFormat, va_list argptr) const
+// Count the number of chars
+int wxString::Freq(wxChar ch) const
{
-#ifdef __WINDOWS__
- wxMessageBox("ScanfV not implemented");
- return 0;
-#else
- return vsscanf(c_str(), pszFormat, argptr);
-#endif
+ int count = 0;
+ int len = Len();
+ for (int i = 0; i < len; i++)
+ {
+ if (GetChar(i) == ch)
+ count ++;
+ }
+ return count;
}
-#endif
+
+// convert to upper case, return the copy of the string
+wxString wxString::Upper() const
+{ wxString s(*this); return s.MakeUpper(); }
+
+// convert to lower case, return the copy of the string
+wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }
+
+int wxString::sprintf(const wxChar *pszFormat, ...)
+ {
+ va_list argptr;
+ va_start(argptr, pszFormat);
+ int iLen = PrintfV(pszFormat, argptr);
+ va_end(argptr);
+ return iLen;
+ }
// ---------------------------------------------------------------------------
// standard C++ library string functions
// ---------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
+#ifdef wxSTD_STRING_COMPATIBILITY
wxString& wxString::insert(size_t nPos, const wxString& str)
{
+ wxASSERT( str.GetStringData()->IsValid() );
wxASSERT( nPos <= Len() );
- wxString strTmp;
- char *pc = strTmp.GetWriteBuf(Len() + str.Len() + 1);
- strncpy(pc, c_str(), nPos);
- strcpy(pc + nPos, str);
- strcpy(pc + nPos + str.Len(), c_str() + nPos);
- *this = strTmp;
-
- return *this;
+ if ( !str.IsEmpty() ) {
+ wxString strTmp;
+ wxChar *pc = strTmp.GetWriteBuf(Len() + str.Len());
+ wxStrncpy(pc, c_str(), nPos);
+ wxStrcpy(pc + nPos, str);
+ wxStrcpy(pc + nPos + str.Len(), c_str() + nPos);
+ strTmp.UngetWriteBuf();
+ *this = strTmp;
+ }
+
+ return *this;
}
size_t wxString::find(const wxString& str, size_t nStart) const
{
+ wxASSERT( str.GetStringData()->IsValid() );
wxASSERT( nStart <= Len() );
- const char *p = strstr(c_str() + nStart, str);
-
+ const wxChar *p = wxStrstr(c_str() + nStart, str);
+
return p == NULL ? npos : p - c_str();
}
// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
-size_t wxString::find(const char* sz, size_t nStart, size_t n) const
+#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);
}
-#endif
-
-size_t wxString::find(char ch, size_t nStart) const
+#endif // VC++ 1.5
+
+// Gives a duplicate symbol (presumably a case-insensitivity problem)
+#if !defined(__BORLANDC__)
+size_t wxString::find(wxChar ch, size_t nStart) const
{
wxASSERT( nStart <= Len() );
- const char *p = strchr(c_str() + nStart, ch);
-
+ const wxChar *p = wxStrchr(c_str() + nStart, ch);
+
return p == NULL ? npos : p - c_str();
}
+#endif
size_t wxString::rfind(const wxString& str, size_t nStart) const
{
+ wxASSERT( str.GetStringData()->IsValid() );
wxASSERT( nStart <= Len() );
- // # could be quicker than that
- const char *p = c_str() + (nStart == npos ? Len() : nStart);
+ // TODO could be made much quicker than that
+ const wxChar *p = c_str() + (nStart == npos ? Len() : nStart);
while ( p >= c_str() + str.Len() ) {
- if ( strncmp(p - str.Len(), str, str.Len()) == 0 )
+ if ( wxStrncmp(p - str.Len(), str, str.Len()) == 0 )
return p - str.Len() - c_str();
p--;
}
-
+
return npos;
}
-
+
// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
-size_t wxString::rfind(const char* sz, size_t nStart, size_t n) const
+#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 ? 0 : n), nStart);
}
-size_t wxString::rfind(char ch, size_t nStart) const
+size_t wxString::rfind(wxChar ch, size_t nStart) const
{
- wxASSERT( nStart <= Len() );
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
- const char *p = strrchr(c_str() + nStart, ch);
-
- return p == NULL ? npos : p - c_str();
+ const wxChar *p = wxStrrchr(c_str(), ch);
+
+ if ( p == NULL )
+ return npos;
+
+ size_t result = p - c_str();
+ return ( result > nStart ) ? npos : result;
}
-#endif
+#endif // VC++ 1.5
-wxString wxString::substr(size_t nStart, size_t nLen) const
+size_t wxString::find_first_of(const wxChar* sz, size_t nStart) const
{
- // npos means 'take all'
- if ( nLen == npos )
- nLen = 0;
+ const wxChar *start = c_str() + nStart;
+ const wxChar *firstOf = wxStrpbrk(start, sz);
+ if ( firstOf )
+ return firstOf - start;
+ else
+ return npos;
+}
+
+size_t wxString::find_last_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
- wxASSERT( nStart + nLen <= Len() );
+ for ( const wxChar *p = c_str() + length() - 1; p >= c_str(); p-- )
+ {
+ if ( wxStrchr(sz, *p) )
+ return p - c_str();
+ }
- return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
+ return npos;
+}
+
+size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
+
+ size_t nAccept = wxStrspn(c_str() + nStart, sz);
+ if ( nAccept >= length() - nStart )
+ return npos;
+ else
+ return nAccept;
+}
+
+size_t wxString::find_first_not_of(wxChar ch, size_t nStart) const
+{
+ wxASSERT( nStart <= Len() );
+
+ for ( const wxChar *p = c_str() + nStart; *p; p++ )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxString::find_last_not_of(const wxChar* sz, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
+ {
+ if ( !wxStrchr(sz, *p) )
+ return p - c_str();
+ }
+
+ return npos;
+}
+
+size_t wxString::find_last_not_of(wxChar ch, size_t nStart) const
+{
+ if ( nStart == npos )
+ {
+ nStart = Len();
+ }
+ else
+ {
+ wxASSERT( nStart <= Len() );
+ }
+
+ for ( const wxChar *p = c_str() + nStart - 1; p >= c_str(); p-- )
+ {
+ if ( *p != ch )
+ return p - c_str();
+ }
+
+ return npos;
}
wxString& wxString::erase(size_t nStart, size_t nLen)
return *this;
}
-wxString& wxString::replace(size_t nStart, size_t nLen, const char *sz)
+wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
{
- wxASSERT( nStart + nLen <= Strlen(sz) );
+ wxASSERT( nStart + nLen <= wxStrlen(sz) );
wxString strTmp;
if ( nStart != 0 )
strTmp.append(c_str(), nStart);
strTmp += sz;
strTmp.append(c_str() + nStart + nLen);
-
+
*this = strTmp;
return *this;
}
-wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, char ch)
+wxString& wxString::replace(size_t nStart, size_t nLen, size_t nCount, wxChar ch)
{
return replace(nStart, nLen, wxString(ch, nCount));
}
-wxString& wxString::replace(size_t nStart, size_t nLen,
- const wxString& str, size_t nStart2, size_t nLen2)
+wxString& wxString::replace(size_t nStart, size_t nLen,
+ const wxString& str, size_t nStart2, size_t nLen2)
{
return replace(nStart, nLen, str.substr(nStart2, nLen2));
}
-wxString& wxString::replace(size_t nStart, size_t nLen,
- const char* sz, size_t nCount)
+wxString& wxString::replace(size_t nStart, size_t nLen,
+ const wxChar* sz, size_t nCount)
{
return replace(nStart, nLen, wxString(sz, nCount));
}
#define STRING(p) ((wxString *)(&(p)))
// ctor
-wxArrayString::wxArrayString()
+wxArrayString::wxArrayString(bool autoSort)
{
m_nSize =
m_nCount = 0;
- m_pItems = NULL;
+ m_pItems = (wxChar **) NULL;
+ m_autoSort = autoSort;
}
// copy ctor
wxArrayString::wxArrayString(const wxArrayString& src)
{
- m_nSize = src.m_nSize;
- m_nCount = src.m_nCount;
-
- if ( m_nSize != 0 )
- m_pItems = new char *[m_nSize];
- else
- m_pItems = NULL;
+ m_nSize =
+ m_nCount = 0;
+ m_pItems = (wxChar **) NULL;
+ m_autoSort = src.m_autoSort;
- if ( m_nCount != 0 )
- memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(char *));
+ *this = src;
}
-// copy operator
+// assignment operator
wxArrayString& wxArrayString::operator=(const wxArrayString& src)
{
- DELETEA(m_pItems);
+ if ( m_nSize > 0 )
+ Clear();
- m_nSize = src.m_nSize;
- m_nCount = src.m_nCount;
+ Copy(src);
- if ( m_nSize != 0 )
- m_pItems = new char *[m_nSize];
- else
- m_pItems = NULL;
+ return *this;
+}
- if ( m_nCount != 0 )
- memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(char *));
+void wxArrayString::Copy(const wxArrayString& src)
+{
+ if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
+ Alloc(src.m_nCount);
- return *this;
+ for ( size_t n = 0; n < src.m_nCount; n++ )
+ Add(src[n]);
}
// grow the array
if( m_nSize == 0 ) {
// was empty, alloc some memory
m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
- m_pItems = new char *[m_nSize];
+ 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 >> 1;
+ size_t nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
+ ? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
if ( nIncrement > ARRAY_MAXSIZE_INCREMENT )
nIncrement = ARRAY_MAXSIZE_INCREMENT;
m_nSize += nIncrement;
- char **pNew = new char *[m_nSize];
+ wxChar **pNew = new wxChar *[m_nSize];
// copy data to new location
- memcpy(pNew, m_pItems, m_nCount*sizeof(char *));
+ memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
// delete old memory (but do not release the strings!)
- DELETEA(m_pItems);
+ wxDELETEA(m_pItems);
m_pItems = pNew;
}
{
Free();
- m_nSize =
+ m_nSize =
m_nCount = 0;
- DELETEA(m_pItems);
- m_pItems = NULL;
+ wxDELETEA(m_pItems);
}
// dtor
{
Free();
- DELETEA(m_pItems);
+ wxDELETEA(m_pItems);
}
// pre-allocates memory (frees the previous data!)
// only if old buffer was not big enough
if ( nSize > m_nSize ) {
Free();
- DELETEA(m_pItems);
- m_pItems = new char *[nSize];
+ wxDELETEA(m_pItems);
+ m_pItems = new wxChar *[nSize];
m_nSize = nSize;
}
m_nCount = 0;
}
-// searches the array for an item (forward or backwards)
+// minimizes the memory usage by freeing unused memory
+void wxArrayString::Shrink()
+{
+ // only do it if we have some memory to free
+ if( m_nCount < m_nSize ) {
+ // allocates exactly as much memory as we need
+ wxChar **pNew = new wxChar *[m_nCount];
-// Robert Roebling (changed to bool from bool)
+ // copy data to new location
+ memcpy(pNew, m_pItems, m_nCount*sizeof(wxChar *));
+ delete [] m_pItems;
+ m_pItems = pNew;
+ }
+}
-int wxArrayString::Index(const char *sz, bool bCase, bool bFromEnd) const
-{
- if ( bFromEnd ) {
- if ( m_nCount > 0 ) {
- uint ui = m_nCount;
- do {
- if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
- return ui;
- }
- while ( ui != 0 );
+// searches the array for an item (forward or backwards)
+int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
+{
+ if ( m_autoSort ) {
+ // use binary search in the sorted array
+ wxASSERT_MSG( bCase && !bFromEnd,
+ wxT("search parameters ignored for auto sorted array") );
+
+ size_t i,
+ lo = 0,
+ hi = m_nCount;
+ int res;
+ while ( lo < hi ) {
+ i = (lo + hi)/2;
+
+ res = wxStrcmp(sz, m_pItems[i]);
+ if ( res < 0 )
+ hi = i;
+ else if ( res > 0 )
+ lo = i + 1;
+ else
+ return i;
}
+
+ return wxNOT_FOUND;
}
else {
- for( uint ui = 0; ui < m_nCount; ui++ ) {
- if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
- return ui;
+ // use linear search in unsorted array
+ if ( bFromEnd ) {
+ if ( m_nCount > 0 ) {
+ size_t ui = m_nCount;
+ do {
+ if ( STRING(m_pItems[--ui])->IsSameAs(sz, bCase) )
+ return ui;
+ }
+ while ( ui != 0 );
+ }
+ }
+ else {
+ for( size_t ui = 0; ui < m_nCount; ui++ ) {
+ if( STRING(m_pItems[ui])->IsSameAs(sz, bCase) )
+ return ui;
+ }
}
}
- return NOT_FOUND;
+ return wxNOT_FOUND;
}
// add item at the end
-void wxArrayString::Add(const wxString& src)
-{
- Grow();
+size_t wxArrayString::Add(const wxString& str)
+{
+ if ( m_autoSort ) {
+ // insert the string at the correct position to keep the array sorted
+ size_t i,
+ lo = 0,
+ hi = m_nCount;
+ int res;
+ while ( lo < hi ) {
+ i = (lo + hi)/2;
+
+ res = wxStrcmp(str, m_pItems[i]);
+ if ( res < 0 )
+ hi = i;
+ else if ( res > 0 )
+ lo = i + 1;
+ else {
+ lo = hi = i;
+ break;
+ }
+ }
- // the string data must not be deleted!
- src.GetStringData()->Lock();
- m_pItems[m_nCount++] = (char *)src.c_str();
+ wxASSERT_MSG( lo == hi, wxT("binary search broken") );
+
+ Insert(str, lo);
+
+ return (size_t)lo;
+ }
+ else {
+ wxASSERT( str.GetStringData()->IsValid() );
+
+ Grow();
+
+ // 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++;
+ }
}
// add item at the given position
-void wxArrayString::Insert(const wxString& src, size_t nIndex)
+void wxArrayString::Insert(const wxString& str, size_t nIndex)
{
- wxCHECK_RET( nIndex <= m_nCount, "bad index in wxArrayString::Insert" );
+ wxASSERT( str.GetStringData()->IsValid() );
+
+ wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Insert") );
Grow();
- memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex],
- (m_nCount - nIndex)*sizeof(char *));
+ memmove(&m_pItems[nIndex + 1], &m_pItems[nIndex],
+ (m_nCount - nIndex)*sizeof(wxChar *));
- src.GetStringData()->Lock();
- m_pItems[nIndex] = (char *)src.c_str();
+ str.GetStringData()->Lock();
+ m_pItems[nIndex] = (wxChar *)str.c_str();
m_nCount++;
}
// removes item from array (by index)
void wxArrayString::Remove(size_t nIndex)
{
- wxCHECK_RET( nIndex <= m_nCount, "bad index in wxArrayString::Remove" );
+ wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Remove") );
// release our lock
Item(nIndex).GetStringData()->Unlock();
- memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1],
- (m_nCount - nIndex - 1)*sizeof(char *));
+ memmove(&m_pItems[nIndex], &m_pItems[nIndex + 1],
+ (m_nCount - nIndex - 1)*sizeof(wxChar *));
m_nCount--;
}
// removes item from array (by value)
-void wxArrayString::Remove(const char *sz)
+void wxArrayString::Remove(const wxChar *sz)
{
int iIndex = Index(sz);
- wxCHECK_RET( iIndex != NOT_FOUND,
- "removing inexistent element in wxArrayString::Remove" );
+ wxCHECK_RET( iIndex != wxNOT_FOUND,
+ wxT("removing inexistent element in wxArrayString::Remove") );
- Remove((size_t)iIndex);
+ Remove(iIndex);
+}
+
+// ----------------------------------------------------------------------------
+// sorting
+// ----------------------------------------------------------------------------
+
+// we can only sort one array at a time with the quick-sort based
+// implementation
+#if wxUSE_THREADS
+ // need a critical section to protect access to gs_compareFunction and
+ // gs_sortAscending variables
+ static wxCriticalSection *gs_critsectStringSort = NULL;
+
+ // call this before the value of the global sort vars is changed/after
+ // you're finished with them
+ #define START_SORT() wxASSERT( !gs_critsectStringSort ); \
+ gs_critsectStringSort = new wxCriticalSection; \
+ gs_critsectStringSort->Enter()
+ #define END_SORT() gs_critsectStringSort->Leave(); \
+ delete gs_critsectStringSort; \
+ gs_critsectStringSort = NULL
+#else // !threads
+ #define START_SORT()
+ #define END_SORT()
+#endif // wxUSE_THREADS
+
+// function to use for string comparaison
+static wxArrayString::CompareFunction gs_compareFunction = NULL;
+
+// if we don't use the compare function, this flag tells us if we sort the
+// array in ascending or descending order
+static bool gs_sortAscending = TRUE;
+
+// function which is called by quick sort
+static int LINKAGEMODE wxStringCompareFunction(const void *first, const void *second)
+{
+ wxString *strFirst = (wxString *)first;
+ wxString *strSecond = (wxString *)second;
+
+ if ( gs_compareFunction ) {
+ return gs_compareFunction(*strFirst, *strSecond);
+ }
+ else {
+ // maybe we should use wxStrcoll
+ int result = wxStrcmp(strFirst->c_str(), strSecond->c_str());
+
+ return gs_sortAscending ? result : -result;
+ }
}
// sort array elements using passed comparaison function
+void wxArrayString::Sort(CompareFunction compareFunction)
+{
+ START_SORT();
-void wxArrayString::Sort(bool bCase, bool bReverse)
+ wxASSERT( !gs_compareFunction ); // must have been reset to NULL
+ gs_compareFunction = compareFunction;
+
+ DoSort();
+
+ END_SORT();
+}
+
+void wxArrayString::Sort(bool reverseOrder)
+{
+ START_SORT();
+
+ wxASSERT( !gs_compareFunction ); // must have been reset to NULL
+ gs_sortAscending = !reverseOrder;
+
+ DoSort();
+
+ END_SORT();
+}
+
+void wxArrayString::DoSort()
{
- //@@@@ TO DO
- //qsort(m_pItems, m_nCount, sizeof(char *), fCmp);
+ wxCHECK_RET( !m_autoSort, wxT("can't use this method with sorted arrays") );
+
+ // just sort the pointers using qsort() - of course it only works because
+ // wxString() *is* a pointer to its data
+ qsort(m_pItems, m_nCount, sizeof(wxChar *), wxStringCompareFunction);
}
+
projects / wxWidgets.git / blobdiff