+public:
+
+ // the position of the argument relative to this conversion specifier
+ size_t m_pos;
+
+ // the type of this conversion specifier
+ wxPrintfArgType m_type;
+
+ // the minimum and maximum width
+ // when one of this var is set to -1 it means: use the following argument
+ // in the stack as minimum/maximum width for this conversion specifier
+ int m_nMinWidth, m_nMaxWidth;
+
+ // does the argument need to the be aligned to left ?
+ bool m_bAlignLeft;
+
+ // pointer to the '%' of this conversion specifier in the format string
+ // NOTE: this points somewhere in the string given to the Parse() function -
+ // it's task of the caller ensure that memory is still valid !
+ const wxChar *m_pArgPos;
+
+ // pointer to the last character of this conversion specifier in the
+ // format string
+ // NOTE: this points somewhere in the string given to the Parse() function -
+ // it's task of the caller ensure that memory is still valid !
+ const wxChar *m_pArgEnd;
+
+ // a little buffer where formatting flags like #+\.hlqLZ are stored by Parse()
+ // for use in Process()
+ // NB: even if this buffer is used only for numeric conversion specifiers and
+ // thus could be safely declared as a char[] buffer, we want it to be wxChar
+ // so that in Unicode builds we can avoid to convert its contents to Unicode
+ // chars when copying it in user's buffer.
+ wxChar m_szFlags[wxMAX_SVNPRINTF_FLAGBUFFER_LEN];
+
+
+public:
+
+ // we don't declare this as a constructor otherwise it would be called
+ // automatically and we don't want this: to be optimized, wxVsnprintf_
+ // calls this function only on really-used instances of this class.
+ void Init();
+
+ // Parses the first conversion specifier in the given string, which must
+ // begin with a '%'. Returns false if the first '%' does not introduce a
+ // (valid) conversion specifier and thus should be ignored.
+ bool Parse(const wxChar *format);
+
+ // Process this conversion specifier and puts the result in the given
+ // buffer. Returns the number of characters written in 'buf' or -1 if
+ // there's not enough space.
+ int Process(wxChar *buf, size_t lenMax, wxPrintfArg *p);
+
+ // Loads the argument of this conversion specifier from given va_list.
+ bool LoadArg(wxPrintfArg *p, va_list &argptr);
+
+private:
+ // An helper function of LoadArg() which is used to handle the '*' flag
+ void ReplaceAsteriskWith(int w);
+};
+
+void wxPrintfConvSpec::Init()
+{
+ m_nMinWidth = 0;
+ m_nMaxWidth = 0xFFFF;
+ m_pos = 0;
+ m_bAlignLeft = false;
+ m_pArgPos = m_pArgEnd = NULL;
+ m_type = wxPAT_INVALID;
+
+ // this character will never be removed from m_szFlags array and
+ // is important when calling sprintf() in wxPrintfConvSpec::Process() !
+ m_szFlags[0] = wxT('%');
+}
+
+bool wxPrintfConvSpec::Parse(const wxChar *format)
+{
+ bool done = false;
+
+ // temporary parse data
+ size_t flagofs = 1;
+ bool in_prec, prec_dot;
+ int ilen = 0;
+
+ m_bAlignLeft = in_prec = prec_dot = false;
+ m_pArgPos = m_pArgEnd = format;
+ do
+ {
+#define CHECK_PREC \
+ if (in_prec && !prec_dot) \
+ { \
+ m_szFlags[flagofs++] = wxT('.'); \
+ prec_dot = true; \
+ }
+
+ // what follows '%'?
+ const wxChar ch = *(++m_pArgEnd);
+ switch ( ch )
+ {
+ case wxT('\0'):
+ return false; // not really an argument
+
+ case wxT('%'):
+ return false; // not really an argument
+
+ case wxT('#'):
+ case wxT('0'):
+ case wxT(' '):
+ case wxT('+'):
+ case wxT('\''):
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('-'):
+ CHECK_PREC
+ m_bAlignLeft = true;
+ m_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('.'):
+ CHECK_PREC
+ in_prec = true;
+ prec_dot = false;
+ m_nMaxWidth = 0;
+ // dot will be auto-added to m_szFlags if non-negative
+ // number follows
+ break;
+
+ case wxT('h'):
+ ilen = -1;
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('l'):
+ // NB: it's safe to use flagofs-1 as flagofs always start from 1
+ if (m_szFlags[flagofs-1] == 'l') // 'll' modifier is the same as 'L' or 'q'
+ ilen = 2;
+ else
+ ilen = 1;
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('q'):
+ case wxT('L'):
+ ilen = 2;
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('Z'):
+ ilen = 3;
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ break;
+
+ case wxT('*'):
+ if (in_prec)
+ {
+ CHECK_PREC
+
+ // tell Process() to use the next argument
+ // in the stack as maxwidth...
+ m_nMaxWidth = -1;
+ }
+ else
+ {
+ // tell Process() to use the next argument
+ // in the stack as minwidth...
+ m_nMinWidth = -1;
+ }
+
+ // save the * in our formatting buffer...
+ // will be replaced later by Process()
+ m_szFlags[flagofs++] = ch;
+ 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 ( (*m_pArgEnd >= wxT('0')) &&
+ (*m_pArgEnd <= wxT('9')) )
+ {
+ m_szFlags[flagofs++] = (*m_pArgEnd);
+ len = len*10 + (*m_pArgEnd - wxT('0'));
+ m_pArgEnd++;
+ }
+
+ if (in_prec)
+ m_nMaxWidth = len;
+ else
+ m_nMinWidth = len;
+
+ m_pArgEnd--; // the main loop pre-increments n again
+ }
+ break;
+
+ case wxT('$'): // a positional parameter (e.g. %2$s) ?
+ {
+ if (m_nMinWidth <= 0)
+ break; // ignore this formatting flag as no
+ // numbers are preceding it
+
+ // remove from m_szFlags all digits previously added
+ do {
+ flagofs--;
+ } while (m_szFlags[flagofs] >= '1' &&
+ m_szFlags[flagofs] <= '9');
+
+ // re-adjust the offset making it point to the
+ // next free char of m_szFlags
+ flagofs++;
+
+ m_pos = m_nMinWidth;
+ m_nMinWidth = 0;
+ }
+ break;
+
+ case wxT('d'):
+ case wxT('i'):
+ case wxT('o'):
+ case wxT('u'):
+ case wxT('x'):
+ case wxT('X'):
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ m_szFlags[flagofs] = wxT('\0');
+ if (ilen == 0)
+ m_type = wxPAT_INT;
+ else if (ilen == -1)
+ // NB: 'short int' value passed through '...'
+ // is promoted to 'int', so we have to get
+ // an int from stack even if we need a short
+ m_type = wxPAT_INT;
+ else if (ilen == 1)
+ m_type = wxPAT_LONGINT;
+ else if (ilen == 2)
+#if SIZEOF_LONG_LONG
+ m_type = wxPAT_LONGLONGINT;
+#else // !long long
+ m_type = wxPAT_LONGINT;
+#endif // long long/!long long
+ else if (ilen == 3)
+ m_type = wxPAT_SIZET;
+ done = true;
+ break;
+
+ case wxT('e'):
+ case wxT('E'):
+ case wxT('f'):
+ case wxT('g'):
+ case wxT('G'):
+ CHECK_PREC
+ m_szFlags[flagofs++] = ch;
+ m_szFlags[flagofs] = wxT('\0');
+ if (ilen == 2)
+ m_type = wxPAT_LONGDOUBLE;
+ else
+ m_type = wxPAT_DOUBLE;
+ done = true;
+ break;
+
+ case wxT('p'):
+ m_type = wxPAT_POINTER;
+ m_szFlags[flagofs++] = ch;
+ m_szFlags[flagofs] = '\0';
+ done = true;
+ break;
+
+ case wxT('c'):
+ if (ilen == -1)
+ {
+ // in Unicode mode %hc == ANSI character
+ // and in ANSI mode, %hc == %c == ANSI...
+ m_type = wxPAT_CHAR;
+ }
+ else if (ilen == 1)
+ {
+ // in ANSI mode %lc == Unicode character
+ // and in Unicode mode, %lc == %c == Unicode...
+ m_type = wxPAT_WCHAR;
+ }
+ else
+ {
+#if wxUSE_UNICODE
+ // in Unicode mode, %c == Unicode character
+ m_type = wxPAT_WCHAR;
+#else
+ // in ANSI mode, %c == ANSI character
+ m_type = wxPAT_CHAR;
+#endif
+ }
+ done = true;
+ break;
+
+ case wxT('s'):
+ if (ilen == -1)
+ {
+ // Unicode mode wx extension: we'll let %hs mean non-Unicode
+ // strings (when in ANSI mode, %s == %hs == ANSI string)
+ m_type = wxPAT_PCHAR;
+ }
+ else if (ilen == 1)
+ {
+ // in Unicode mode, %ls == %s == Unicode string
+ // in ANSI mode, %ls == Unicode string
+ m_type = wxPAT_PWCHAR;
+ }
+ else
+ {
+#if wxUSE_UNICODE
+ m_type = wxPAT_PWCHAR;
+#else
+ m_type = wxPAT_PCHAR;
+#endif
+ }
+ done = true;
+ break;
+
+ case wxT('n'):
+ if (ilen == 0)
+ m_type = wxPAT_NINT;
+ else if (ilen == -1)
+ m_type = wxPAT_NSHORTINT;
+ else if (ilen >= 1)
+ m_type = wxPAT_NLONGINT;
+ done = true;
+ break;
+
+ default:
+ // bad format, don't consider this an argument;
+ // leave it unchanged
+ return false;
+ }
+
+ if (flagofs == wxMAX_SVNPRINTF_FLAGBUFFER_LEN)
+ {
+ wxLogDebug(wxT("Too many flags specified for a single conversion specifier!"));
+ return false;
+ }
+ }
+ while (!done);
+
+ return true; // parsing was successful
+}
+
+
+void wxPrintfConvSpec::ReplaceAsteriskWith(int width)
+{
+ wxChar temp[wxMAX_SVNPRINTF_FLAGBUFFER_LEN];
+
+ // find the first * in our flag buffer
+ wxChar *pwidth = wxStrchr(m_szFlags, wxT('*'));
+ wxASSERT(pwidth);
+
+ // save what follows the * (the +1 is to skip the asterisk itself!)
+ wxStrcpy(temp, pwidth+1);
+ if (width < 0)
+ {
+ pwidth[0] = wxT('-');
+ pwidth++;
+ }
+
+ // replace * with the actual integer given as width
+#ifndef SYSTEM_SPRINTF_IS_UNSAFE
+ int maxlen = (m_szFlags + wxMAX_SVNPRINTF_FLAGBUFFER_LEN - pwidth) /
+ sizeof(wxChar);
+#endif
+ int offset = system_sprintf(pwidth, maxlen, wxT("%d"), abs(width));
+
+ // restore after the expanded * what was following it
+ wxStrcpy(pwidth+offset, temp);
+}
+
+bool wxPrintfConvSpec::LoadArg(wxPrintfArg *p, va_list &argptr)
+{
+ // did the '*' width/precision specifier was used ?
+ if (m_nMaxWidth == -1)
+ {
+ // take the maxwidth specifier from the stack
+ m_nMaxWidth = va_arg(argptr, int);
+ if (m_nMaxWidth < 0)
+ m_nMaxWidth = 0;
+ else
+ ReplaceAsteriskWith(m_nMaxWidth);
+ }
+
+ if (m_nMinWidth == -1)
+ {
+ // take the minwidth specifier from the stack
+ m_nMinWidth = va_arg(argptr, int);
+
+ ReplaceAsteriskWith(m_nMinWidth);
+ if (m_nMinWidth < 0)
+ {
+ m_bAlignLeft = !m_bAlignLeft;
+ m_nMinWidth = -m_nMinWidth;
+ }
+ }
+
+ switch (m_type) {
+ case wxPAT_INT:
+ p->pad_int = va_arg(argptr, int);
+ break;
+ case wxPAT_LONGINT:
+ p->pad_longint = va_arg(argptr, long int);
+ break;
+#if SIZEOF_LONG_LONG
+ case wxPAT_LONGLONGINT:
+ p->pad_longlongint = va_arg(argptr, long long int);
+ break;
+#endif
+ case wxPAT_SIZET:
+ p->pad_sizet = va_arg(argptr, size_t);
+ break;
+ case wxPAT_DOUBLE:
+ p->pad_double = va_arg(argptr, double);
+ break;
+ case wxPAT_LONGDOUBLE:
+ p->pad_longdouble = va_arg(argptr, long double);
+ break;
+ case wxPAT_POINTER:
+ p->pad_pointer = va_arg(argptr, void *);
+ break;
+
+ case wxPAT_CHAR:
+ p->pad_char = (char)va_arg(argptr, int); // char is promoted to int when passed through '...'
+ break;
+ case wxPAT_WCHAR:
+ p->pad_wchar = (wchar_t)va_arg(argptr, int); // char is promoted to int when passed through '...'
+ break;
+
+ case wxPAT_PCHAR:
+ p->pad_pchar = va_arg(argptr, char *);
+ break;
+ case wxPAT_PWCHAR:
+ p->pad_pwchar = va_arg(argptr, wchar_t *);
+ break;
+
+ case wxPAT_NINT:
+ p->pad_nint = va_arg(argptr, int *);
+ break;
+ case wxPAT_NSHORTINT:
+ p->pad_nshortint = va_arg(argptr, short int *);
+ break;
+ case wxPAT_NLONGINT:
+ p->pad_nlongint = va_arg(argptr, long int *);
+ break;
+
+ case wxPAT_INVALID:
+ default:
+ return false;
+ }
+
+ return true; // loading was successful
+}
+
+int wxPrintfConvSpec::Process(wxChar *buf, size_t lenMax, wxPrintfArg *p)
+{
+ // buffer to avoid dynamic memory allocation each time for small strings;
+ // note that this buffer is used only to hold results of number formatting,
+ // %s directly writes user's string in buf, without using szScratch
+ wxChar szScratch[wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN];
+ size_t lenScratch = 0, lenCur = 0;
+
+#define APPEND_CH(ch) \
+ { \
+ if ( lenCur == lenMax ) \
+ return -1; \
+ \
+ buf[lenCur++] = ch; \
+ }
+
+#define APPEND_STR(s) \
+ { \
+ for ( const wxChar *p = s; *p; p++ ) \
+ { \
+ APPEND_CH(*p); \
+ } \
+ }
+
+ switch ( m_type )
+ {
+ case wxPAT_INT:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_int);
+ break;
+
+ case wxPAT_LONGINT:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_longint);
+ break;
+
+#if SIZEOF_LONG_LONG
+ case wxPAT_LONGLONGINT:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_longlongint);
+ break;
+#endif // SIZEOF_LONG_LONG
+
+ case wxPAT_SIZET:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_sizet);
+ break;
+
+ case wxPAT_LONGDOUBLE:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_longdouble);
+ break;
+
+ case wxPAT_DOUBLE:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_double);
+ break;
+
+ case wxPAT_POINTER:
+ lenScratch = system_sprintf(szScratch, wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN, m_szFlags, p->pad_pointer);
+ break;
+
+ case wxPAT_CHAR:
+ case wxPAT_WCHAR:
+ {
+ wxChar val =
+#if wxUSE_UNICODE
+ p->pad_wchar;
+
+ if (m_type == wxPAT_CHAR)
+ {
+ // user passed a character explicitely indicated as ANSI...
+ const char buf[2] = { p->pad_char, 0 };
+ val = wxString(buf, wxConvLibc)[0u];
+
+ //wprintf(L"converting ANSI=>Unicode"); // for debug
+ }
+#else
+ p->pad_char;
+
+#if wxUSE_WCHAR_T
+ if (m_type == wxPAT_WCHAR)
+ {
+ // user passed a character explicitely indicated as Unicode...
+ const wchar_t buf[2] = { p->pad_wchar, 0 };
+ val = wxString(buf, wxConvLibc)[0u];
+
+ //printf("converting Unicode=>ANSI"); // for debug
+ }
+#endif
+#endif
+
+ size_t i;
+
+ if (!m_bAlignLeft)
+ for (i = 1; i < (size_t)m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+
+ APPEND_CH(val);
+
+ if (m_bAlignLeft)
+ for (i = 1; i < (size_t)m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
+ break;
+
+ case wxPAT_PCHAR:
+ case wxPAT_PWCHAR:
+ {
+ wxString s;
+ const wxChar *val =
+#if wxUSE_UNICODE
+ p->pad_pwchar;
+
+ if (m_type == wxPAT_PCHAR)
+ {
+ // user passed a string explicitely indicated as ANSI...
+ val = s = wxString(p->pad_pchar, wxConvLibc);
+
+ //wprintf(L"converting ANSI=>Unicode"); // for debug
+ }
+#else
+ p->pad_pchar;
+
+#if wxUSE_WCHAR_T
+ if (m_type == wxPAT_PWCHAR)
+ {
+ // user passed a string explicitely indicated as Unicode...
+ val = s = wxString(p->pad_pwchar, wxConvLibc);
+
+ //printf("converting Unicode=>ANSI"); // for debug
+ }
+#endif
+#endif
+ int len;
+
+ if (val)
+ {
+#if wxUSE_STRUTILS
+ // at this point we are sure that m_nMaxWidth is positive or null
+ // (see top of wxPrintfConvSpec::LoadArg)
+ len = wxMin((unsigned int)m_nMaxWidth, wxStrlen(val));
+#else
+ for ( len = 0; val[len] && (len < m_nMaxWidth); len++ )
+ ;
+#endif
+ }
+ else if (m_nMaxWidth >= 6)
+ {
+ val = wxT("(null)");
+ len = 6;
+ }
+ else
+ {
+ val = wxEmptyString;
+ len = 0;
+ }
+
+ int i;
+
+ if (!m_bAlignLeft)
+ {
+ for (i = len; i < m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
+
+#if wxUSE_STRUTILS
+ len = wxMin((unsigned int)len, lenMax-lenCur);
+ wxStrncpy(buf+lenCur, val, len);
+ lenCur += len;
+#else
+ for (i = 0; i < len; i++)
+ APPEND_CH(val[i]);
+#endif
+
+ if (m_bAlignLeft)
+ {
+ for (i = len; i < m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
+ }
+ break;
+
+ case wxPAT_NINT:
+ *p->pad_nint = lenCur;
+ break;
+
+ case wxPAT_NSHORTINT:
+ *p->pad_nshortint = (short int)lenCur;
+ break;
+
+ case wxPAT_NLONGINT:
+ *p->pad_nlongint = lenCur;
+ break;
+
+ case wxPAT_INVALID:
+ default:
+ return -1;
+ }
+
+#ifdef HAVE_BROKEN_SWPRINTF_DECL
+ wxUnusedVar(lenScratch); // avoid dummy warnings
+#endif
+
+ // if we used system's sprintf() then we now need to append the s_szScratch
+ // buffer to the given one...
+ switch (m_type)
+ {
+ case wxPAT_INT:
+ case wxPAT_LONGINT:
+#if SIZEOF_LONG_LONG
+ case wxPAT_LONGLONGINT:
+#endif
+ case wxPAT_SIZET:
+ case wxPAT_LONGDOUBLE:
+ case wxPAT_DOUBLE:
+ case wxPAT_POINTER:
+#if wxUSE_STRUTILS
+ {
+ wxASSERT( /* lenScratch >= 0 && */ lenScratch < wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN);
+ if (lenMax < lenScratch)
+ {
+ // fill output buffer and then return -1
+ wxStrncpy(buf, szScratch, lenMax);
+ return -1;
+ }
+ wxStrncpy(buf, szScratch, lenScratch);
+ lenCur += lenScratch;
+ }
+#else
+ {
+ APPEND_STR(szScratch);
+ }
+#endif
+ break;
+
+ default:
+ break; // all other cases were completed previously
+ }
+
+ return lenCur;
+}
+
+// differences from standard strncpy:
+// 1) copies everything from 'source' except for '%%' sequence which is copied as '%'
+// 2) returns the number of written characters in 'dest' as it could differ from given 'n'
+// 3) much less optimized, unfortunately...
+static int wxCopyStrWithPercents(wxChar *dest, const wxChar *source, size_t n)
+{
+ size_t written = 0;
+
+ if (n == 0)
+ return 0;
+
+ size_t i;
+ for ( i = 0; i < n-1; source++, i++)
+ {
+ dest[written++] = *source;
+ if (*(source+1) == wxT('%'))
+ {
+ // skip this additional '%' character
+ source++;
+ i++;
+ }
+ }
+
+ if (i < n)
+ // copy last character inconditionally
+ dest[written++] = *source;
+
+ return written;
+}
+
+int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
+ const wxChar *format, va_list argptr)
+{
+ // useful for debugging, to understand if we are really using this function
+ // rather than the system implementation
+#if 0
+ wprintf(L"Using wxVsnprintf_\n");
+#endif
+
+ // required memory:
+ wxPrintfConvSpec arg[wxMAX_SVNPRINTF_ARGUMENTS];
+ wxPrintfArg argdata[wxMAX_SVNPRINTF_ARGUMENTS];
+ wxPrintfConvSpec *pspec[wxMAX_SVNPRINTF_ARGUMENTS] = { NULL };
+
+ size_t i;
+
+ // number of characters in the buffer so far, must be less than lenMax
+ size_t lenCur = 0;
+
+ size_t nargs = 0;
+ const wxChar *toparse = format;
+
+ // parse the format string
+ bool posarg_present = false, nonposarg_present = false;
+ for (; *toparse != wxT('\0'); toparse++)
+ {
+ if (*toparse == wxT('%') )
+ {
+ arg[nargs].Init();
+
+ // let's see if this is a (valid) conversion specifier...
+ if (arg[nargs].Parse(toparse))
+ {
+ // ...yes it is
+ wxPrintfConvSpec *current = &arg[nargs];
+
+ // make toparse point to the end of this specifier
+ toparse = current->m_pArgEnd;
+
+ if (current->m_pos > 0)
+ {
+ // the positionals start from number 1... adjust the index
+ current->m_pos--;
+ posarg_present = true;
+ }
+ else
+ {
+ // not a positional argument...
+ current->m_pos = nargs;
+ nonposarg_present = true;
+ }
+
+ // this conversion specifier is tied to the pos-th argument...
+ pspec[current->m_pos] = current;
+ nargs++;
+
+ if (nargs == wxMAX_SVNPRINTF_ARGUMENTS)
+ {
+ wxLogDebug(wxT("A single call to wxVsnprintf() has more than %d arguments; ")
+ wxT("ignoring all remaining arguments."), wxMAX_SVNPRINTF_ARGUMENTS);
+ break; // cannot handle any additional conv spec
+ }
+ }
+ else
+ {
+ // it's safe to look in the next character of toparse as at worst
+ // we'll hit its \0
+ if (*(toparse+1) == wxT('%'))
+ toparse++; // the Parse() returned false because we've found a %%
+ }
+ }
+ }
+
+ if (posarg_present && nonposarg_present)
+ return -1; // format strings with both positional and
+ // non-positional conversion specifier are unsupported !!
+
+ // on platforms where va_list is an array type, it is necessary to make a
+ // copy to be able to pass it to LoadArg as a reference.
+ bool ok = true;
+ va_list ap;
+ wxVaCopy(ap, argptr);
+
+ // now load arguments from stack
+ for (i=0; i < nargs && ok; i++)
+ {
+ // !pspec[i] means that the user forgot a positional parameter (e.g. %$1s %$3s);
+ // LoadArg == false means that wxPrintfConvSpec::Parse failed to set the
+ // conversion specifier 'type' to a valid value...
+ ok = pspec[i] && pspec[i]->LoadArg(&argdata[i], ap);
+ }
+
+ va_end(ap);
+
+ // something failed while loading arguments from the variable list...
+ if (!ok)
+ return -1;
+
+ // finally, process each conversion specifier with its own argument
+ toparse = format;
+ for (i=0; i < nargs; i++)
+ {
+ // copy in the output buffer the portion of the format string between
+ // last specifier and the current one
+ size_t tocopy = ( arg[i].m_pArgPos - toparse );
+ if (lenCur+tocopy >= lenMax)
+ {
+ // not enough space in the output buffer !
+ // copy until the end of remaining space and then stop
+ wxCopyStrWithPercents(buf+lenCur, toparse, lenMax - lenCur - 1);
+ buf[lenMax-1] = wxT('\0');
+ return -1;
+ }
+
+ lenCur += wxCopyStrWithPercents(buf+lenCur, toparse, tocopy);
+
+ // process this specifier directly in the output buffer
+ int n = arg[i].Process(buf+lenCur, lenMax - lenCur, &argdata[arg[i].m_pos]);
+ if (n == -1)
+ {
+ buf[lenMax-1] = wxT('\0'); // be sure to always NUL-terminate the string
+ return -1; // not enough space in the output buffer !
+ }
+ lenCur += n;
+
+ // the +1 is because wxPrintfConvSpec::m_pArgEnd points to the last character
+ // of the format specifier, but we are not interested to it...
+ toparse = arg[i].m_pArgEnd + 1;
+ }
+
+ // copy portion of the format string after last specifier
+ // NOTE: toparse is pointing to the character just after the last processed
+ // conversion specifier
+ // NOTE2: the +1 is because we want to copy also the '\0'
+ size_t tocopy = wxStrlen(format) + 1 - ( toparse - format ) ;
+ if (lenCur+tocopy >= lenMax)
+ return -1; // not enough space in the output buffer !
+
+ // the -1 is because of the '\0'
+ lenCur += wxCopyStrWithPercents(buf+lenCur, toparse, tocopy) - 1;
+
+ wxASSERT(lenCur == wxStrlen(buf));
+ return lenCur;
+}
+
+#undef APPEND_CH
+#undef APPEND_STR
+#undef CHECK_PREC
+
+#endif // !wxVsnprintfA
+
+#if !defined(wxSnprintf_)
+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;
+}
+#endif // wxSnprintf_
+
+#if defined(__DMC__)
+ /* Digital Mars adds count to _stprintf (C99) so convert */
+ #if wxUSE_UNICODE
+ int wxSprintf (wchar_t * __RESTRICT s, const wchar_t * __RESTRICT format, ... )
+ {
+ va_list arglist;
+
+ va_start( arglist, format );
+ int iLen = swprintf ( s, -1, format, arglist );
+ va_end( arglist );
+ return iLen ;
+ }
+
+ #endif // wxUSE_UNICODE
+
+#endif //__DMC__
+
+// ----------------------------------------------------------------------------
+// implement the standard IO functions for wide char if libc doesn't have them
+// ----------------------------------------------------------------------------
+
+#ifdef wxNEED_FPUTS
+int wxFputs(const wchar_t *ws, FILE *stream)
+{
+ // counting the number of wide characters written isn't worth the trouble,
+ // simply distinguish between ok and error
+ return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
+}
+#endif // wxNEED_FPUTS
+
+#ifdef wxNEED_PUTS
+int wxPuts(const wxChar *ws)
+{
+ int rc = wxFputs(ws, stdout);
+ if ( rc != -1 )
+ {
+ if ( wxFputs(L"\n", stdout) == -1 )
+ return -1;
+
+ rc++;
+ }
+
+ return rc;
+}
+#endif // wxNEED_PUTS
+
+#ifdef wxNEED_PUTC
+int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
+{
+ wchar_t ws[2] = { wc, L'\0' };
+
+ return wxFputs(ws, stream);
+}
+#endif // wxNEED_PUTC
+
+// NB: we only implement va_list functions here, the ones taking ... are
+// defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
+// the definitions there to avoid duplicating them here
+#ifdef wxNEED_WPRINTF
+
+// TODO: implement the scanf() functions
+int vwscanf(const wxChar *format, va_list argptr)
+{
+ wxFAIL_MSG( _T("TODO") );
+
+ return -1;
+}
+
+int vswscanf(const wxChar *ws, const wxChar *format, va_list argptr)
+{
+ // The best we can do without proper Unicode support in glibc is to
+ // convert the strings into MB representation and run ANSI version
+ // of the function. This doesn't work with %c and %s because of difference
+ // in size of char and wchar_t, though.
+
+ wxCHECK_MSG( wxStrstr(format, _T("%s")) == NULL, -1,
+ _T("incomplete vswscanf implementation doesn't allow %s") );
+ wxCHECK_MSG( wxStrstr(format, _T("%c")) == NULL, -1,
+ _T("incomplete vswscanf implementation doesn't allow %c") );
+
+ va_list argcopy;
+ wxVaCopy(argcopy, argptr);
+ return vsscanf(wxConvLibc.cWX2MB(ws), wxConvLibc.cWX2MB(format), argcopy);
+}
+
+int vfwscanf(FILE *stream, const wxChar *format, va_list argptr)
+{
+ wxFAIL_MSG( _T("TODO") );
+
+ return -1;
+}
+
+#define vswprintf wxVsnprintf_
+
+int vfwprintf(FILE *stream, const wxChar *format, va_list argptr)
+{
+ wxString s;
+ int rc = s.PrintfV(format, argptr);
+
+ if ( rc != -1 )
+ {
+ // we can't do much better without Unicode support in libc...
+ if ( fprintf(stream, "%s", (const char*)s.mb_str() ) == -1 )
+ return -1;
+ }
+
+ return rc;
+}
+
+int vwprintf(const wxChar *format, va_list argptr)
+{
+ return wxVfprintf(stdout, format, argptr);
+}
+
+#endif // wxNEED_WPRINTF
+
+#ifdef wxNEED_PRINTF_CONVERSION
+
+// ----------------------------------------------------------------------------
+// wxFormatConverter: class doing the "%s" -> "%ls" conversion
+// ----------------------------------------------------------------------------
+
+/*
+ Here are the gory details. We want to follow the Windows/MS conventions,
+ that is to have
+
+ In ANSI mode:
+
+ format specifier results in
+ -----------------------------------
+ %c, %hc, %hC char
+ %lc, %C, %lC wchar_t
+
+ In Unicode mode:
+
+ format specifier results in
+ -----------------------------------
+ %hc, %C, %hC char
+ %c, %lc, %lC wchar_t
+
+
+ while on POSIX systems we have %C identical to %lc and %c always means char
+ (in any mode) while %lc always means wchar_t,
+
+ So to use native functions in order to get our semantics we must do the
+ following translations in Unicode mode (nothing to do in ANSI mode):
+
+ wxWidgets specifier POSIX specifier
+ ----------------------------------------
+
+ %hc, %C, %hC %c
+ %c %lc
+
+
+ And, of course, the same should be done for %s as well.
+*/
+
+class wxFormatConverter
+{
+public:
+ wxFormatConverter(const wxChar *format);
+
+ // notice that we only translated the string if m_fmtOrig == NULL (as set
+ // by CopyAllBefore()), otherwise we should simply use the original format
+ operator const wxChar *() const
+ { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
+
+private:
+ // copy another character to the translated format: this function does the
+ // copy if we are translating but doesn't do anything at all if we don't,
+ // so we don't create the translated format string at all unless we really
+ // need to (i.e. InsertFmtChar() is called)
+ wxChar CopyFmtChar(wxChar ch)
+ {
+ if ( !m_fmtOrig )
+ {
+ // we're translating, do copy
+ m_fmt += ch;
+ }
+ else
+ {
+ // simply increase the count which should be copied by
+ // CopyAllBefore() later if needed
+ m_nCopied++;
+ }
+
+ return ch;
+ }
+
+ // insert an extra character
+ void InsertFmtChar(wxChar ch)
+ {
+ if ( m_fmtOrig )
+ {
+ // so far we haven't translated anything yet
+ CopyAllBefore();
+ }
+
+ m_fmt += ch;
+ }
+
+ void CopyAllBefore()
+ {
+ wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
+
+ m_fmt = wxString(m_fmtOrig, m_nCopied);
+
+ // we won't need it any longer
+ m_fmtOrig = NULL;
+ }
+
+ static bool IsFlagChar(wxChar ch)
+ {
+ return ch == _T('-') || ch == _T('+') ||
+ ch == _T('0') || ch == _T(' ') || ch == _T('#');
+ }
+
+ void SkipDigits(const wxChar **ptpc)
+ {
+ while ( **ptpc >= _T('0') && **ptpc <= _T('9') )
+ CopyFmtChar(*(*ptpc)++);
+ }
+
+ // the translated format
+ wxString m_fmt;
+
+ // the original format
+ const wxChar *m_fmtOrig;
+
+ // the number of characters already copied
+ size_t m_nCopied;
+};
+
+wxFormatConverter::wxFormatConverter(const wxChar *format)
+{
+ m_fmtOrig = format;
+ m_nCopied = 0;
+
+ while ( *format )
+ {
+ if ( CopyFmtChar(*format++) == _T('%') )
+ {
+ // skip any flags
+ while ( IsFlagChar(*format) )
+ CopyFmtChar(*format++);
+
+ // and possible width
+ if ( *format == _T('*') )
+ CopyFmtChar(*format++);
+ else
+ SkipDigits(&format);
+
+ // precision?
+ if ( *format == _T('.') )
+ {
+ CopyFmtChar(*format++);
+ if ( *format == _T('*') )
+ CopyFmtChar(*format++);
+ else
+ SkipDigits(&format);
+ }
+
+ // next we can have a size modifier
+ enum
+ {
+ Default,
+ Short,
+ Long
+ } size;
+
+ switch ( *format )
+ {
+ case _T('h'):
+ size = Short;
+ format++;
+ break;
+
+ case _T('l'):
+ // "ll" has a different meaning!
+ if ( format[1] != _T('l') )
+ {
+ size = Long;
+ format++;
+ break;
+ }
+ //else: fall through
+
+ default:
+ size = Default;
+ }
+
+ // and finally we should have the type
+ switch ( *format )
+ {
+ case _T('C'):
+ case _T('S'):
+ // %C and %hC -> %c and %lC -> %lc
+ if ( size == Long )
+ CopyFmtChar(_T('l'));
+
+ InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
+ break;
+
+ case _T('c'):
+ case _T('s'):
+ // %c -> %lc but %hc stays %hc and %lc is still %lc
+ if ( size == Default)
+ InsertFmtChar(_T('l'));
+ // fall through
+
+ default:
+ // nothing special to do
+ if ( size != Default )
+ CopyFmtChar(*(format - 1));
+ CopyFmtChar(*format++);
+ }
+ }
+ }
+}
+
+#else // !wxNEED_PRINTF_CONVERSION
+ // no conversion necessary
+ #define wxFormatConverter(x) (x)
+#endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
+
+#ifdef __WXDEBUG__
+// For testing the format converter
+wxString wxConvertFormat(const wxChar *format)
+{
+ return wxString(wxFormatConverter(format));
projects / wxWidgets.git / blobdiff