git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48307 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
		
			
				
	
	
		
			859 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			859 lines
		
	
	
		
			28 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /////////////////////////////////////////////////////////////////////////////
 | |
| // 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 "wx/log.h"
 | |
| #include "wx/utils.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_
 |