+/////////////////////////////////////////////////////////////////////////////
+// Name: wx/private/wxprintf.h
+// Purpose: wxWidgets wxPrintf() implementation
+// Author: Ove Kaven
+// Modified by: Ron Lee, Francesco Montorsi
+// Created: 09/04/99
+// RCS-ID: $Id$
+// Copyright: (c) wxWidgets copyright
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_PRIVATE_WXPRINTF_H_
+#define _WX_PRIVATE_WXPRINTF_H_
+
+// ---------------------------------------------------------------------------
+// headers and macros
+// ---------------------------------------------------------------------------
+
+#include "wx/crt.h"
+
+#include <string.h>
+
+#if defined(__MWERKS__) && __MSL__ >= 0x6000
+namespace std {}
+using namespace std ;
+#endif
+
+// prefer snprintf over sprintf
+#if defined(__VISUALC__) || \
+ (defined(__BORLANDC__) && __BORLANDC__ >= 0x540)
+ #define system_sprintf(buff, max, flags, data) \
+ ::_snprintf(buff, max, flags, data)
+#elif defined(HAVE_SNPRINTF)
+ #define system_sprintf(buff, max, flags, data) \
+ ::snprintf(buff, max, flags, data)
+#else // NB: at least sprintf() should always be available
+ // since 'max' is not used in this case, wxVsnprintf() should always
+ // ensure that 'buff' is big enough for all common needs
+ // (see wxMAX_SVNPRINTF_FLAGBUFFER_LEN and wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN)
+ #define system_sprintf(buff, max, flags, data) \
+ ::sprintf(buff, flags, data)
+
+ #define SYSTEM_SPRINTF_IS_UNSAFE
+#endif
+
+// ---------------------------------------------------------------------------
+// printf format string parsing
+// ---------------------------------------------------------------------------
+
+// some limits of our implementation
+#define wxMAX_SVNPRINTF_ARGUMENTS 64
+#define wxMAX_SVNPRINTF_FLAGBUFFER_LEN 32
+#define wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN 512
+
+
+// the conversion specifiers accepted by wxCRT_VsnprintfW
+enum wxPrintfArgType {
+ wxPAT_INVALID = -1,
+
+ wxPAT_INT, // %d, %i, %o, %u, %x, %X
+ wxPAT_LONGINT, // %ld, etc
+#ifdef wxLongLong_t
+ wxPAT_LONGLONGINT, // %Ld, etc
+#endif
+ wxPAT_SIZET, // %Zd, etc
+
+ wxPAT_DOUBLE, // %e, %E, %f, %g, %G
+ wxPAT_LONGDOUBLE, // %le, etc
+
+ wxPAT_POINTER, // %p
+
+ wxPAT_CHAR, // %hc (in ANSI mode: %c, too)
+ wxPAT_WCHAR, // %lc (in Unicode mode: %c, too)
+
+ wxPAT_PCHAR, // %s (related to a char *)
+ wxPAT_PWCHAR, // %s (related to a wchar_t *)
+
+ wxPAT_NINT, // %n
+ wxPAT_NSHORTINT, // %hn
+ wxPAT_NLONGINT // %ln
+};
+
+// an argument passed to wxCRT_VsnprintfW
+typedef union {
+ int pad_int; // %d, %i, %o, %u, %x, %X
+ long int pad_longint; // %ld, etc
+#ifdef wxLongLong_t
+ wxLongLong_t pad_longlongint; // %Ld, etc
+#endif
+ size_t pad_sizet; // %Zd, etc
+
+ double pad_double; // %e, %E, %f, %g, %G
+ long double pad_longdouble; // %le, etc
+
+ void *pad_pointer; // %p
+
+ char pad_char; // %hc (in ANSI mode: %c, too)
+ wchar_t pad_wchar; // %lc (in Unicode mode: %c, too)
+
+ void *pad_str; // %s
+
+ int *pad_nint; // %n
+ short int *pad_nshortint; // %hn
+ long int *pad_nlongint; // %ln
+} wxPrintfArg;
+
+// helper for converting string into either char* or wchar_t* dependening
+// on the type of wxPrintfConvSpec<T> instantiation:
+template<typename CharType> struct wxPrintfStringHelper {};
+
+template<> struct wxPrintfStringHelper<char>
+{
+ typedef const wxWX2MBbuf ConvertedType;
+ static ConvertedType Convert(const wxString& s) { return s.mb_str(); }
+};
+
+template<> struct wxPrintfStringHelper<wchar_t>
+{
+ typedef const wxWX2WCbuf ConvertedType;
+ static ConvertedType Convert(const wxString& s) { return s.wc_str(); }
+};
+
+
+// Contains parsed data relative to a conversion specifier given to
+// wxCRT_VsnprintfW and parsed from the format string
+// NOTE: in C++ there is almost no difference between struct & classes thus
+// there is no performance gain by using a struct here...
+template<typename CharType>
+class wxPrintfConvSpec
+{
+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 CharType *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 CharType *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 wchar_t so that in Unicode builds we can avoid to convert its
+ // contents to Unicode chars when copying it in user's buffer.
+ char 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, wxCRT_VsnprintfW
+ // 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 CharType *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(CharType *buf, size_t lenMax, wxPrintfArg *p, size_t written);
+
+ // 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);
+};
+
+template<typename CharType>
+void wxPrintfConvSpec<CharType>::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] = '%';
+}
+
+template<typename CharType>
+bool wxPrintfConvSpec<CharType>::Parse(const CharType *format)
+{
+ bool done = false;
+
+ // temporary parse data
+ size_t flagofs = 1;
+ bool in_prec, // true if we found the dot in some previous iteration
+ prec_dot; // true if the dot has been already added to m_szFlags
+ 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++] = '.'; \
+ prec_dot = true; \
+ }
+
+ // what follows '%'?
+ const CharType 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++] = char(ch);
+ break;
+
+ case wxT('-'):
+ CHECK_PREC
+ m_bAlignLeft = true;
+ m_szFlags[flagofs++] = char(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++] = char(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++] = char(ch);
+ break;
+
+ case wxT('q'):
+ case wxT('L'):
+ ilen = 2;
+ CHECK_PREC
+ m_szFlags[flagofs++] = char(ch);
+ break;
+#ifdef __WXMSW__
+ // under Windows we support the special '%I64' notation as longlong
+ // integer conversion specifier for MSVC compatibility
+ // (it behaves exactly as '%lli' or '%Li' or '%qi')
+ case wxT('I'):
+ if (*(m_pArgEnd+1) != wxT('6') ||
+ *(m_pArgEnd+2) != wxT('4'))
+ return false; // bad format
+
+ m_pArgEnd++;
+ m_pArgEnd++;
+
+ ilen = 2;
+ CHECK_PREC
+ m_szFlags[flagofs++] = char(ch);
+ m_szFlags[flagofs++] = '6';
+ m_szFlags[flagofs++] = '4';
+ break;
+#endif // __WXMSW__
+
+ case wxT('Z'):
+ ilen = 3;
+ CHECK_PREC
+ m_szFlags[flagofs++] = char(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++] = char(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 >= CharType('0')) &&
+ (*m_pArgEnd <= CharType('9')) )
+ {
+ m_szFlags[flagofs++] = char(*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++] = char(ch);
+ m_szFlags[flagofs] = '\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)
+#ifdef wxLongLong_t
+ m_type = wxPAT_LONGLONGINT;
+#else // !wxLongLong_t
+ m_type = wxPAT_LONGINT;
+#endif // wxLongLong_t/!wxLongLong_t
+ 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++] = char(ch);
+ m_szFlags[flagofs] = '\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++] = char(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
+}
+
+template<typename CharType>
+void wxPrintfConvSpec<CharType>::ReplaceAsteriskWith(int width)
+{
+ char temp[wxMAX_SVNPRINTF_FLAGBUFFER_LEN];
+
+ // find the first * in our flag buffer
+ char *pwidth = strchr(m_szFlags, '*');
+ wxCHECK_RET(pwidth, _T("field width must be specified"));
+
+ // save what follows the * (the +1 is to skip the asterisk itself!)
+ strcpy(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(*m_szFlags);
+#endif
+ int offset = system_sprintf(pwidth, maxlen, "%d", abs(width));
+
+ // restore after the expanded * what was following it
+ strcpy(pwidth+offset, temp);
+}
+
+template<typename CharType>
+bool wxPrintfConvSpec<CharType>::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;
+#ifdef wxLongLong_t
+ case wxPAT_LONGLONGINT:
+ p->pad_longlongint = va_arg(argptr, wxLongLong_t);
+ break;
+#endif // wxLongLong_t
+ 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:
+ case wxPAT_PWCHAR:
+ p->pad_str = va_arg(argptr, void *);
+ 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
+}
+
+template<typename CharType>
+int wxPrintfConvSpec<CharType>::Process(CharType *buf, size_t lenMax, wxPrintfArg *p, size_t written)
+{
+ // 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
+ char szScratch[wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN];
+ size_t lenScratch = 0, lenCur = 0;
+
+#define APPEND_CH(ch) \
+ { \
+ if ( lenCur == lenMax ) \
+ return -1; \
+ \
+ buf[lenCur++] = ch; \
+ }
+
+ 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;
+
+#ifdef wxLongLong_t
+ 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:
+ {
+ wxUniChar ch;
+ if (m_type == wxPAT_CHAR)
+ ch = p->pad_char;
+ else // m_type == wxPAT_WCHAR
+ ch = p->pad_wchar;
+
+ CharType val = ch;
+
+ 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:
+ {
+ wxArgNormalizedString arg(p->pad_str);
+ wxString s = arg;
+
+ if ( !arg.IsValid() && m_nMaxWidth >= 6 )
+ s = wxT("(null)");
+
+ typename wxPrintfStringHelper<CharType>::ConvertedType strbuf(
+ wxPrintfStringHelper<CharType>::Convert(s));
+
+ // at this point we are sure that m_nMaxWidth is positive or
+ // null (see top of wxPrintfConvSpec::LoadArg)
+ int len = wxMin((unsigned int)m_nMaxWidth, wxStrlen(strbuf));
+
+ int i;
+
+ if (!m_bAlignLeft)
+ {
+ for (i = len; i < m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
+
+ len = wxMin((unsigned int)len, lenMax-lenCur);
+ wxStrncpy(buf+lenCur, strbuf, len);
+ lenCur += len;
+
+ if (m_bAlignLeft)
+ {
+ for (i = len; i < m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
+ }
+ break;
+
+ case wxPAT_NINT:
+ *p->pad_nint = written;
+ break;
+
+ case wxPAT_NSHORTINT:
+ *p->pad_nshortint = (short int)written;
+ break;
+
+ case wxPAT_NLONGINT:
+ *p->pad_nlongint = written;
+ break;
+
+ case wxPAT_INVALID:
+ default:
+ return -1;
+ }
+
+ // 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:
+#ifdef wxLongLong_t
+ case wxPAT_LONGLONGINT:
+#endif
+ case wxPAT_SIZET:
+ case wxPAT_LONGDOUBLE:
+ case wxPAT_DOUBLE:
+ case wxPAT_POINTER:
+ wxASSERT(lenScratch < wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN);
+ // NB: 1) we can compare lenMax (for CharType*, i.e. possibly
+ // wchar_t*) with lenScratch (char*) because this code is
+ // formatting integers and that will have the same length
+ // even in UTF-8 (the only case when char* length may be
+ // more than wchar_t* length of the same string)
+ // 2) wxStrncpy converts the 2nd argument to 1st argument's
+ // type transparently if their types differ, so this code
+ // works for both instantiations
+ if (lenMax < lenScratch)
+ {
+ // fill output buffer and then return -1
+ wxStrncpy(buf, szScratch, lenMax);
+ return -1;
+ }
+ wxStrncpy(buf, szScratch, lenScratch);
+ lenCur += lenScratch;
+ break;
+
+ default:
+ break; // all other cases were completed previously
+ }
+
+ return lenCur;
+}
+
+
+// helper that parses format string
+template<typename CharType>
+struct wxPrintfConvSpecParser
+{
+ wxPrintfConvSpecParser(const CharType *format)
+ : posarg_present(false), nonposarg_present(false),
+ nargs(0)
+ {
+ memset(pspec, 0, sizeof(pspec));
+
+ const CharType *toparse = format;
+
+ // parse the format string
+ 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<CharType> *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('%'))
+ {
+ // the Parse() returned false because we've found a %%
+ toparse++;
+ }
+ }
+ }
+ }
+ }
+
+ wxPrintfConvSpec<CharType> arg[wxMAX_SVNPRINTF_ARGUMENTS];
+ wxPrintfConvSpec<CharType> *pspec[wxMAX_SVNPRINTF_ARGUMENTS];
+ bool posarg_present, nonposarg_present;
+ unsigned nargs;
+};
+
+#undef APPEND_CH
+#undef CHECK_PREC
+
+#endif // _WX_PRIVATE_WXPRINTF_H_
projects / wxWidgets.git / commitdiff
