-int wxString::Printf(const wxChar *pszFormat, ...)
-{
- va_list argptr;
- va_start(argptr, pszFormat);
-
- int iLen = PrintfV(pszFormat, argptr);
-
- va_end(argptr);
-
- return iLen;
-}
-
-int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
-{
-#if wxUSE_EXPERIMENTAL_PRINTF
- // 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] == 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), (char *)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
projects / wxWidgets.git / blobdiff