#include "wx/defs.h"
#include "wx/string.h"
#include "wx/intl.h"
-#if wxUSE_THREADS
- #include <wx/thread.h>
-#endif
+ #include "wx/thread.h"
#endif
#include <ctype.h>
{
wxStringData data;
wxChar dummy;
-} g_strEmpty = { {-1, 0, 0}, _T('\0') };
+} 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 // Visual Age
// empty C style string: points to 'string data' byte of g_strEmpty
-extern const wxChar WXDLLEXPORT *g_szNul = &g_strEmpty.dummy;
+extern const wxChar WXDLLEXPORT *wxEmptyString = &g_strEmpty.dummy;
// ----------------------------------------------------------------------------
// conditional compilation
// we want to find out if the current platform supports vsnprintf()-like
// function: for Unix this is done with configure, for Windows we test the
// compiler explicitly.
+//
+// FIXME currently, this is only for ANSI (!Unicode) strings, so we call this
+// function wxVsnprintfA (A for ANSI), should also find one for Unicode
+// strings in Unicode build
#ifdef __WXMSW__
- #ifdef __VISUALC__
- #define wxVsnprintf _vsnprintf
+ #if defined(__VISUALC__) || (defined(__MINGW32__) && wxUSE_NORLANDER_HEADERS)
+ #define wxVsnprintfA _vsnprintf
#endif
+#elif defined(__WXMAC__)
+ #define wxVsnprintfA vsnprintf
#else // !Windows
#ifdef HAVE_VSNPRINTF
- #define wxVsnprintf vsnprintf
+ #define wxVsnprintfA vsnprintf
#endif
#endif // Windows/!Windows
-#ifndef wxVsnprintf
+#ifndef wxVsnprintfA
// in this case we'll use vsprintf() (which is ANSI and thus should be
// always available), but it's unsafe because it doesn't check for buffer
// size - so give a warning
- #define wxVsnprintf(buffer,len,format,argptr) vsprintf(buffer,format, argptr)
+ #define wxVsnprintfA(buf, len, format, arg) vsprintf(buf, format, arg)
#if defined(__VISUALC__)
#pragma message("Using sprintf() because no snprintf()-like function defined")
- #elif defined(__GNUG__) && !defined(__UNIX__)
+ #elif defined(__GNUG__)
#warning "Using sprintf() because no snprintf()-like function defined"
- #elif defined(__MWERKS__)
- #warning "Using sprintf() because no snprintf()-like function defined"
#endif //compiler
#endif // no vsnprintf
//
// ATTN: you can _not_ use both of these in the same program!
-istream& operator>>(istream& is, wxString& WXUNUSED(str))
+wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
{
#if 0
int w = is.width(0);
return is;
}
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
+{
+ os << str.c_str();
+ return os;
+}
+
#endif //std::string compatibility
+extern int WXDLLEXPORT wxVsnprintf(wxChar *buf, size_t len,
+ const wxChar *format, va_list argptr)
+{
+#if wxUSE_UNICODE
+ // FIXME should use wvsnprintf() or whatever if it's available
+ wxString s;
+ int iLen = s.PrintfV(format, argptr);
+ if ( iLen != -1 )
+ {
+ wxStrncpy(buf, s.c_str(), len);
+ buf[len-1] = wxT('\0');
+ }
+
+ return iLen;
+#else // ANSI
+ // vsnprintf() will not terminate the string with '\0' if there is not
+ // enough place, but we want the string to always be NUL terminated
+ int rc = wxVsnprintfA(buf, len - 1, format, argptr);
+ if ( rc == -1 )
+ {
+ buf[len] = 0;
+ }
+
+ return rc;
+#endif // Unicode/ANSI
+}
+
+extern int WXDLLEXPORT wxSnprintf(wxChar *buf, size_t len,
+ const wxChar *format, ...)
+{
+ va_list argptr;
+ va_start(argptr, format);
+
+ int iLen = wxVsnprintf(buf, len, format, argptr);
+
+ va_end(argptr);
+
+ return iLen;
+}
+
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
{
Init();
- wxASSERT( nPos <= wxStrlen(psz) );
+ // if the length is not given, assume the string to be NUL terminated
+ if ( nLength == wxSTRING_MAXLEN ) {
+ wxASSERT_MSG( nPos <= wxStrlen(psz), _T("index out of bounds") );
- if ( nLength == wxSTRING_MAXLEN )
nLength = wxStrlen(psz + nPos);
+ }
STATISTICS_ADD(InitialLength, nLength);
}
}
-#else
+#else // ANSI
#if wxUSE_WCHAR_T
// from wide string
-wxString::wxString(const wchar_t *pwz)
+wxString::wxString(const wchar_t *pwz, wxMBConv& conv)
{
// first get necessary size
- size_t nLen = pwz ? wxWC2MB((char *) NULL, pwz, 0) : 0;
+ size_t nLen = pwz ? conv.WC2MB((char *) NULL, pwz, 0) : 0;
// empty?
if ( (nLen != 0) && (nLen != (size_t)-1) ) {
AllocBuffer(nLen);
- wxWC2MB(m_pchData, pwz, nLen);
+ conv.WC2MB(m_pchData, pwz, nLen);
}
else {
Init();
}
}
-#endif
+#endif // wxUSE_WCHAR_T
-#endif
+#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);
pData->nDataLength = nLen;
pData->nAllocLength = nLen + EXTRA_ALLOC;
m_pchData = pData->data(); // data starts after wxStringData
- m_pchData[nLen] = _T('\0');
+ m_pchData[nLen] = wxT('\0');
}
// must be called before changing this string
// must not share string and must have enough space
wxStringData* pData = GetStringData();
- if ( pData->IsShared() || (nLen > pData->nAllocLength) ) {
+ if ( pData->IsShared() || pData->IsEmpty() ) {
// can't work with old buffer, get new one
pData->Unlock();
AllocBuffer(nLen);
}
else {
- // update the string length
+ if ( nLen > pData->nAllocLength ) {
+ // realloc the buffer instead of calling malloc() again, this is more
+ // efficient
+ STATISTICS_ADD(Length, nLen);
+
+ nLen += EXTRA_ALLOC;
+
+ 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;
}
pData->nDataLength = 0;
pData->nAllocLength = nLen;
m_pchData = pData->data(); // data starts after wxStringData
- m_pchData[0u] = _T('\0');
+ m_pchData[0u] = wxT('\0');
}
else if ( pData->IsShared() ) {
pData->Unlock(); // memory not freed because shared
else {
nLen += EXTRA_ALLOC;
+ wxStringData *pDataOld = pData;
wxStringData *p = (wxStringData *)
realloc(pData, sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
if ( p == NULL ) {
- // @@@ what to do on memory error?
+ // don't leak memory
+ free(pDataOld);
+
+ // FIXME what to do on memory error?
return;
}
{
wxStringData *pData = GetStringData();
- // this variable is unused in release build, so avoid the compiler warning by
- // just not declaring it
+ // 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!
}
GetStringData()->Validate(TRUE);
}
+void wxString::UngetWriteBuf(size_t nLen)
+{
+ GetStringData()->nDataLength = nLen;
+ GetStringData()->Validate(TRUE);
+}
+
// ---------------------------------------------------------------------------
// data access
// ---------------------------------------------------------------------------
AllocBeforeWrite(nSrcLen);
memcpy(m_pchData, pszSrcData, nSrcLen*sizeof(wxChar));
GetStringData()->nDataLength = nSrcLen;
- m_pchData[nSrcLen] = _T('\0');
+ m_pchData[nSrcLen] = wxT('\0');
}
}
// fast concatenation - all is done in our buffer
memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(wxChar));
- m_pchData[nNewLen] = _T('\0'); // put terminating '\0'
+ m_pchData[nNewLen] = wxT('\0'); // put terminating '\0'
GetStringData()->nDataLength = nNewLen; // and fix the length
}
//else: the string to append was empty
return dest;
}
+// check that the tring starts with prefix and return the rest of the string
+// in the provided pointer if it is not NULL, otherwise return FALSE
+bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const
+{
+ wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
+
+ // first check if the beginning of the string matches the prefix: note
+ // that we don't have to check that we don't run out of this string as
+ // when we reach the terminating NUL, either prefix string ends too (and
+ // then it's ok) or we break out of the loop because there is no match
+ const wxChar *p = c_str();
+ while ( *prefix )
+ {
+ if ( *prefix++ != *p++ )
+ {
+ // no match
+ return FALSE;
+ }
+ }
+
+ if ( rest )
+ {
+ // put the rest of the string into provided pointer
+ *rest = p;
+ }
+
+ return TRUE;
+}
+
// extract nCount last (rightmost) characters
wxString wxString::Right(size_t nCount) const
{
wxString wxString::BeforeFirst(wxChar ch) const
{
wxString str;
- for ( const wxChar *pc = m_pchData; *pc != _T('\0') && *pc != ch; pc++ )
+ for ( const wxChar *pc = m_pchData; *pc != wxT('\0') && *pc != ch; pc++ )
str += *pc;
return str;
wxString strTemp;
const wxChar *pCurrent = m_pchData;
const wxChar *pSubstr;
- while ( *pCurrent != _T('\0') ) {
+ while ( *pCurrent != wxT('\0') ) {
pSubstr = wxStrstr(pCurrent, szOld);
if ( pSubstr == NULL ) {
// strTemp is unused if no replacements were made, so avoid the copy
bool wxString::IsNumber() const
{
const wxChar *s = (const wxChar*) *this;
+ if (wxStrlen(s))
+ if ((s[0] == '-') || (s[0] == '+')) s++;
while(*s){
if(!wxIsdigit(*s)) return(FALSE);
s++;
// trimming and padding
// ---------------------------------------------------------------------------
+// some compilers (VC++ 6.0 not to name them) return TRUE for a call to
+// isspace('ê') in the C locale which seems to be broken to me, but we have to
+// live with this by checking that the character is a 7 bit one - even if this
+// may fail to detect some spaces (I don't know if Unicode doesn't have
+// space-like symbols somewhere except in the first 128 chars), it is arguably
+// still better than trimming away accented letters
+inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
+
// trims spaces (in the sense of isspace) from left or right side
wxString& wxString::Trim(bool bFromRight)
{
// first check if we're going to modify the string at all
if ( !IsEmpty() &&
(
- (bFromRight && wxIsspace(GetChar(Len() - 1))) ||
- (!bFromRight && wxIsspace(GetChar(0u)))
+ (bFromRight && wxSafeIsspace(GetChar(Len() - 1))) ||
+ (!bFromRight && wxSafeIsspace(GetChar(0u)))
)
)
{
{
// find last non-space character
wxChar *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( wxIsspace(*psz) && (psz >= m_pchData) )
+ while ( wxSafeIsspace(*psz) && (psz >= m_pchData) )
psz--;
// truncate at trailing space start
- *++psz = _T('\0');
+ *++psz = wxT('\0');
GetStringData()->nDataLength = psz - m_pchData;
}
else
{
// find first non-space character
const wxChar *psz = m_pchData;
- while ( wxIsspace(*psz) )
+ while ( wxSafeIsspace(*psz) )
psz++;
// fix up data and length
if ( uiLen < Len() ) {
CopyBeforeWrite();
- *(m_pchData + uiLen) = _T('\0');
+ *(m_pchData + uiLen) = wxT('\0');
GetStringData()->nDataLength = uiLen;
}
//else: nothing to do, string is already short enough
return (psz == NULL) ? wxNOT_FOUND : psz - (const wxChar*) m_pchData;
}
-// ---------------------------------------------------------------------------
-// stream-like operators
-// ---------------------------------------------------------------------------
-wxString& wxString::operator<<(int i)
+// ----------------------------------------------------------------------------
+// conversion to numbers
+// ----------------------------------------------------------------------------
+
+bool wxString::ToLong(long *val) const
{
- wxString res;
- res.Printf(_T("%d"), i);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToLong") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtol(start, &end, 10);
- return (*this) << res;
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
-wxString& wxString::operator<<(float f)
+bool wxString::ToULong(unsigned long *val) const
{
- wxString res;
- res.Printf(_T("%f"), f);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToULong") );
+
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtoul(start, &end, 10);
- return (*this) << res;
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
-wxString& wxString::operator<<(double d)
+bool wxString::ToDouble(double *val) const
{
- wxString res;
- res.Printf(_T("%g"), d);
+ wxCHECK_MSG( val, FALSE, _T("NULL pointer in wxString::ToDouble") );
- return (*this) << res;
+ const wxChar *start = c_str();
+ wxChar *end;
+ *val = wxStrtod(start, &end);
+
+ // return TRUE only if scan was stopped by the terminating NUL and if the
+ // string was not empty to start with
+ return !*end && (end != start);
}
// ---------------------------------------------------------------------------
// formatted output
// ---------------------------------------------------------------------------
+
+/* static */
+wxString wxString::Format(const wxChar *pszFormat, ...)
+{
+ va_list argptr;
+ va_start(argptr, pszFormat);
+
+ wxString s;
+ s.PrintfV(pszFormat, argptr);
+
+ va_end(argptr);
+
+ return s;
+}
+
+/* static */
+wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
+{
+ wxString s;
+ s.PrintfV(pszFormat, argptr);
+ return s;
+}
+
int wxString::Printf(const wxChar *pszFormat, ...)
{
va_list argptr;
int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
{
- // static buffer to avoid dynamic memory allocation each time
- char s_szScratch[1024]; // using static buffer causes internal compiler err
-#if 0
-#if wxUSE_THREADS
- // protect the static buffer
- static wxCriticalSection critsect;
- wxCriticalSectionLocker lock(critsect);
-#endif
-#endif
-
#if wxUSE_EXPERIMENTAL_PRINTF
-// the new implementation
+ // the new implementation
+
+ // buffer to avoid dynamic memory allocation each time for small strings
+ char szScratch[1024];
Reinit();
for (size_t n = 0; pszFormat[n]; n++)
- if (pszFormat[n] == _T('%')) {
+ if (pszFormat[n] == wxT('%')) {
static char s_szFlags[256] = "%";
size_t flagofs = 1;
bool adj_left = FALSE, in_prec = FALSE,
do {
#define CHECK_PREC if (in_prec && !prec_dot) { s_szFlags[flagofs++] = '.'; prec_dot = TRUE; }
switch (pszFormat[++n]) {
- case _T('\0'):
+ case wxT('\0'):
done = TRUE;
break;
- case _T('%'):
- *this += _T('%');
+ case wxT('%'):
+ *this += wxT('%');
done = TRUE;
break;
- case _T('#'):
- case _T('0'):
- case _T(' '):
- case _T('+'):
- case _T('\''):
+ case wxT('#'):
+ case wxT('0'):
+ case wxT(' '):
+ case wxT('+'):
+ case wxT('\''):
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
break;
- case _T('-'):
+ case wxT('-'):
CHECK_PREC
adj_left = TRUE;
s_szFlags[flagofs++] = pszFormat[n];
break;
- case _T('.'):
+ 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 _T('h'):
+ case wxT('h'):
ilen = -1;
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
break;
- case _T('l'):
+ case wxT('l'):
ilen = 1;
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
break;
- case _T('q'):
- case _T('L'):
+ case wxT('q'):
+ case wxT('L'):
ilen = 2;
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
break;
- case _T('Z'):
+ case wxT('Z'):
ilen = 3;
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
break;
- case _T('*'):
+ case wxT('*'):
{
int len = va_arg(argptr, int);
if (in_prec) {
flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
}
break;
- case _T('1'): case _T('2'): case _T('3'):
- case _T('4'): case _T('5'): case _T('6'):
- case _T('7'): case _T('8'): case _T('9'):
+ 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]>=_T('0')) && (pszFormat[n]<=_T('9'))) {
+ while ((pszFormat[n]>=wxT('0')) && (pszFormat[n]<=wxT('9'))) {
s_szFlags[flagofs++] = pszFormat[n];
- len = len*10 + (pszFormat[n] - _T('0'));
+ len = len*10 + (pszFormat[n] - wxT('0'));
n++;
}
if (in_prec) max_width = len;
n--; // the main loop pre-increments n again
}
break;
- case _T('d'):
- case _T('i'):
- case _T('o'):
- case _T('u'):
- case _T('x'):
- case _T('X'):
+ 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(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
else if (ilen == -1) {
short int val = va_arg(argptr, short int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
else if (ilen == 1) {
long int val = va_arg(argptr, long int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
else if (ilen == 2) {
#if SIZEOF_LONG_LONG
long long int val = va_arg(argptr, long long int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
#else
long int val = va_arg(argptr, long int);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
#endif
}
else if (ilen == 3) {
size_t val = va_arg(argptr, size_t);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
- *this += wxString(s_szScratch);
+ *this += wxString(szScratch);
done = TRUE;
break;
- case _T('e'):
- case _T('E'):
- case _T('f'):
- case _T('g'):
- case _T('G'):
+ 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(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
} else {
double val = va_arg(argptr, double);
- ::sprintf(s_szScratch, s_szFlags, val);
+ ::sprintf(szScratch, s_szFlags, val);
}
- *this += wxString(s_szScratch);
+ *this += wxString(szScratch);
done = TRUE;
break;
- case _T('p'):
+ case wxT('p'):
{
void *val = va_arg(argptr, void *);
CHECK_PREC
s_szFlags[flagofs++] = pszFormat[n];
s_szFlags[flagofs] = '\0';
- ::sprintf(s_szScratch, s_szFlags, val);
- *this += wxString(s_szScratch);
+ ::sprintf(szScratch, s_szFlags, val);
+ *this += wxString(szScratch);
done = TRUE;
}
break;
- case _T('c'):
+ case wxT('c'):
{
wxChar val = va_arg(argptr, int);
// we don't need to honor padding here, do we?
done = TRUE;
}
break;
- case _T('s'):
+ case wxT('s'):
if (ilen == -1) {
// wx extension: we'll let %hs mean non-Unicode strings
char *val = va_arg(argptr, char *);
size_t len = wxSTRING_MAXLEN;
if (val) {
for (len = 0; val[len] && (len<max_width); len++);
- } else val = _T("(null)");
+ } else val = wxT("(null)");
wxString s(val, len);
#endif
if (s.Len() < min_width)
- s.Pad(min_width - s.Len(), _T(' '), adj_left);
+ 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 = _T("(null)");
+ } else val = wxT("(null)");
wxString s(val, len);
if (s.Len() < min_width)
- s.Pad(min_width - s.Len(), _T(' '), adj_left);
+ s.Pad(min_width - s.Len(), wxT(' '), adj_left);
*this += s;
}
done = TRUE;
break;
- case _T('n'):
+ case wxT('n'):
if (ilen == 0) {
int *val = va_arg(argptr, int *);
*val = Len();
s_szFlags[flagofs++] = pszFormat[n];
else {
// bad format
- *this += _T('%'); // just to pass the glibc tst-printf.c
+ *this += wxT('%'); // just to pass the glibc tst-printf.c
n--;
done = TRUE;
}
} else *this += pszFormat[n];
#else
- // NB: wxVsnprintf() may return either less than the buffer size or -1 if there
- // is not enough place depending on implementation
- int iLen = wxVsnprintf(s_szScratch, WXSIZEOF(s_szScratch), pszFormat, argptr);
- char *buffer;
- if ( iLen < (int)WXSIZEOF(s_szScratch) ) {
- buffer = s_szScratch;
+ // buffer to avoid dynamic memory allocation each time for small strings
+ char szScratch[1024];
+
+ // NB: wxVsnprintf() may return either less than the buffer size or -1 if
+ // there is not enough place depending on implementation
+ int iLen = wxVsnprintfA(szScratch, WXSIZEOF(szScratch), (char *)pszFormat, argptr);
+ if ( iLen != -1 ) {
+ // the whole string is in szScratch
+ *this = szScratch;
}
else {
- int size = WXSIZEOF(s_szScratch) * 2;
- buffer = (char *)malloc(size);
- while ( buffer != NULL ) {
- iLen = wxVsnprintf(buffer, WXSIZEOF(s_szScratch), pszFormat, argptr);
- if ( iLen < size ) {
+ bool outOfMemory = FALSE;
+ int size = 2*WXSIZEOF(szScratch);
+ while ( !outOfMemory ) {
+ char *buf = GetWriteBuf(size);
+ if ( buf )
+ iLen = wxVsnprintfA(buf, size, pszFormat, argptr);
+ else
+ outOfMemory = TRUE;
+
+ UngetWriteBuf();
+
+ if ( iLen != -1 ) {
// ok, there was enough space
break;
}
// still not enough, double it again
- buffer = (char *)realloc(buffer, size *= 2);
+ size *= 2;
}
- if ( !buffer ) {
+ if ( outOfMemory ) {
// out of memory
return -1;
}
}
-
- wxString s(buffer);
- *this = s;
-
- if ( buffer != s_szScratch )
- free(buffer);
-#endif
+#endif // wxUSE_EXPERIMENTAL_PRINTF/!wxUSE_EXPERIMENTAL_PRINTF
return Len();
}
// ----------------------------------------------------------------------------
// 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
{
- // check char by char
- const wxChar *pszTxt;
- for ( pszTxt = c_str(); *pszMask != _T('\0'); pszMask++, pszTxt++ ) {
+ // 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 _T('?'):
- if ( *pszTxt == _T('\0') )
+ case wxT('?'):
+ if ( *pszTxt == wxT('\0') )
return FALSE;
- pszTxt++;
- pszMask++;
+ // pszTxt and pszMask will be incremented in the loop statement
+
break;
- case _T('*'):
+ case wxT('*'):
{
+ // remember where we started to be able to backtrack later
+ pszLastStarInText = pszTxt;
+ pszLastStarInMask = pszMask;
+
// ignore special chars immediately following this one
- while ( *pszMask == _T('*') || *pszMask == _T('?') )
+ // (should this be an error?)
+ while ( *pszMask == wxT('*') || *pszMask == wxT('?') )
pszMask++;
// if there is nothing more, match
- if ( *pszMask == _T('\0') )
+ if ( *pszMask == wxT('\0') )
return TRUE;
// are there any other metacharacters in the mask?
size_t uiLenMask;
- const wxChar *pEndMask = wxStrpbrk(pszMask, _T("*?"));
+ const wxChar *pEndMask = wxStrpbrk(pszMask, wxT("*?"));
if ( pEndMask != NULL ) {
// we have to match the string between two metachars
}
// match only if nothing left
- return *pszTxt == _T('\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;
}
// Count the number of chars
// ---------------------------------------------------------------------------
// standard C++ library string functions
// ---------------------------------------------------------------------------
+
#ifdef wxSTD_STRING_COMPATIBILITY
+void wxString::resize(size_t nSize, wxChar ch)
+{
+ size_t len = length();
+
+ if ( nSize < len )
+ {
+ Truncate(nSize);
+ }
+ else if ( nSize > len )
+ {
+ *this += wxString(ch, len - nSize);
+ }
+ //else: we have exactly the specified length, nothing to do
+}
+
+void wxString::swap(wxString& str)
+{
+ // this is slightly less efficient than fiddling with m_pchData directly,
+ // but it is still quite efficient as we don't copy the string here because
+ // ref count always stays positive
+ wxString tmp = str;
+ str = *this;
+ *this = str;
+}
+
wxString& wxString::insert(size_t nPos, const wxString& str)
{
wxASSERT( str.GetStringData()->IsValid() );
#if !defined(__VISUALC__) || defined(__WIN32__)
size_t wxString::find(const wxChar* sz, size_t nStart, size_t n) const
{
- return find(wxString(sz, n == npos ? 0 : n), nStart);
+ return find(wxString(sz, n), nStart);
}
#endif // VC++ 1.5
const wxChar *start = c_str() + nStart;
const wxChar *firstOf = wxStrpbrk(start, sz);
if ( firstOf )
- return firstOf - start;
+ return firstOf - c_str();
else
return npos;
}
return npos;
}
-wxString wxString::substr(size_t nStart, size_t nLen) const
-{
- // npos means 'take all'
- if ( nLen == npos )
- nLen = 0;
-
- wxASSERT( nStart + nLen <= Len() );
-
- return wxString(c_str() + nStart, nLen == npos ? 0 : nLen);
-}
-
wxString& wxString::erase(size_t nStart, size_t nLen)
{
wxString strTmp(c_str(), nStart);
wxString& wxString::replace(size_t nStart, size_t nLen, const wxChar *sz)
{
- wxASSERT( nStart + nLen <= wxStrlen(sz) );
+ wxASSERT_MSG( nStart + nLen <= Len(),
+ _T("index out of bounds in wxString::replace") );
wxString strTmp;
+ strTmp.Alloc(Len()); // micro optimisation to avoid multiple mem allocs
+
if ( nStart != 0 )
strTmp.append(c_str(), nStart);
- strTmp += sz;
- strTmp.append(c_str() + nStart + nLen);
+ strTmp << sz << c_str() + nStart + nLen;
*this = strTmp;
return *this;
#define STRING(p) ((wxString *)(&(p)))
// ctor
-wxArrayString::wxArrayString()
+wxArrayString::wxArrayString(bool autoSort)
{
m_nSize =
m_nCount = 0;
m_pItems = (wxChar **) NULL;
+ m_autoSort = autoSort;
}
// copy ctor
m_nSize =
m_nCount = 0;
m_pItems = (wxChar **) NULL;
+ m_autoSort = src.m_autoSort;
*this = src;
}
if ( m_nSize > 0 )
Clear();
+ Copy(src);
+
+ m_autoSort = src.m_autoSort;
+
+ return *this;
+}
+
+void wxArrayString::Copy(const wxArrayString& src)
+{
if ( src.m_nCount > ARRAY_DEFAULT_INITIAL_SIZE )
Alloc(src.m_nCount);
- // we can't just copy the pointers here because otherwise we would share
- // the strings with another array
for ( size_t n = 0; n < src.m_nCount; n++ )
Add(src[n]);
-
- if ( m_nCount != 0 )
- memcpy(m_pItems, src.m_pItems, m_nCount*sizeof(wxChar *));
-
- return *this;
}
// grow the array
void wxArrayString::Grow()
{
// only do it if no more place
- if( m_nCount == m_nSize ) {
- if( m_nSize == 0 ) {
+ if ( m_nCount == m_nSize ) {
+ // if ARRAY_DEFAULT_INITIAL_SIZE were set to 0, the initially empty would
+ // be never resized!
+ #if ARRAY_DEFAULT_INITIAL_SIZE == 0
+ #error "ARRAY_DEFAULT_INITIAL_SIZE must be > 0!"
+ #endif
+
+ if ( m_nSize == 0 ) {
// was empty, alloc some memory
m_nSize = ARRAY_DEFAULT_INITIAL_SIZE;
m_pItems = new wxChar *[m_nSize];
else {
// otherwise when it's called for the first time, nIncrement would be 0
// and the array would never be expanded
-#if defined(__VISAGECPP__)
- int array_size = ARRAY_DEFAULT_INITIAL_SIZE;
- wxASSERT( array_size != 0 );
-#else
- wxASSERT( ARRAY_DEFAULT_INITIAL_SIZE != 0 );
-#endif
-
// add 50% but not too much
size_t nIncrement = m_nSize < ARRAY_DEFAULT_INITIAL_SIZE
? ARRAY_DEFAULT_INITIAL_SIZE : m_nSize >> 1;
// searches the array for an item (forward or backwards)
int wxArrayString::Index(const wxChar *sz, bool bCase, bool bFromEnd) const
{
- 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 );
+ 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( size_t 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;
+ }
}
}
}
// add item at the end
-void wxArrayString::Add(const wxString& str)
-{
- wxASSERT( str.GetStringData()->IsValid() );
+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;
+ }
+ }
- Grow();
+ wxASSERT_MSG( lo == hi, wxT("binary search broken") );
- // the string data must not be deleted!
- str.GetStringData()->Lock();
- m_pItems[m_nCount++] = (wxChar *)str.c_str();
+ 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
{
wxASSERT( str.GetStringData()->IsValid() );
- wxCHECK_RET( nIndex <= m_nCount, _("bad index in wxArrayString::Insert") );
+ wxCHECK_RET( nIndex <= m_nCount, wxT("bad index in wxArrayString::Insert") );
Grow();
// 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();
int iIndex = Index(sz);
wxCHECK_RET( iIndex != wxNOT_FOUND,
- _("removing inexistent element in wxArrayString::Remove") );
+ wxT("removing inexistent element in wxArrayString::Remove") );
Remove(iIndex);
}
DoSort();
+ // reset it to NULL so that Sort(bool) will work the next time
+ gs_compareFunction = NULL;
+
END_SORT();
}
void wxArrayString::DoSort()
{
+ 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);
}
+bool wxArrayString::operator==(const wxArrayString& a) const
+{
+ if ( m_nCount != a.m_nCount )
+ return FALSE;
+
+ for ( size_t n = 0; n < m_nCount; n++ )
+ {
+ if ( Item(n) != a[n] )
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
projects / wxWidgets.git / blobdiff