965 lines
31 KiB
C++
965 lines
31 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/private/wxprintf.h
|
|
// Purpose: wxWidgets wxPrintf() implementation
|
|
// Author: Ove Kaven
|
|
// Modified by: Ron Lee, Francesco Montorsi
|
|
// Created: 09/04/99
|
|
// 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 <limits.h>
|
|
#include <string.h>
|
|
|
|
// prefer snprintf over sprintf
|
|
#if defined(__VISUALC__)
|
|
#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
|
|
|
|
wxPAT_STAR // '*' used for width or precision
|
|
};
|
|
|
|
// an argument passed to wxCRT_VsnprintfW
|
|
union wxPrintfArg
|
|
{
|
|
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
|
|
};
|
|
|
|
// helper for converting string into either char* or wchar_t* depending
|
|
// 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()
|
|
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 = INT_MAX;
|
|
m_pos = 0;
|
|
m_bAlignLeft = false;
|
|
m_pArgPos = m_pArgEnd = NULL;
|
|
m_type = wxPAT_INVALID;
|
|
|
|
memset(m_szFlags, 0, sizeof(m_szFlags));
|
|
// 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('.'):
|
|
// don't use CHECK_PREC here to avoid warning about the value
|
|
// assigned to prec_dot inside it being never used (because
|
|
// overwritten just below)
|
|
if (in_prec && !prec_dot)
|
|
m_szFlags[flagofs++] = '.';
|
|
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 __WINDOWS__
|
|
// 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'))
|
|
{
|
|
m_pArgEnd++;
|
|
m_pArgEnd++;
|
|
|
|
ilen = 2;
|
|
CHECK_PREC
|
|
m_szFlags[flagofs++] = char(ch);
|
|
m_szFlags[flagofs++] = '6';
|
|
m_szFlags[flagofs++] = '4';
|
|
break;
|
|
}
|
|
// else: fall-through, 'I' is MSVC equivalent of C99 'z'
|
|
wxFALLTHROUGH;
|
|
#endif // __WINDOWS__
|
|
|
|
case wxT('z'):
|
|
case wxT('Z'):
|
|
// 'z' is C99 standard for size_t and ptrdiff_t, 'Z' was used
|
|
// for this purpose in libc5 and by wx <= 2.8
|
|
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);
|
|
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);
|
|
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);
|
|
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, wxT("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_STAR:
|
|
// this will be handled as part of the next argument
|
|
return true;
|
|
|
|
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(wxT(' '));
|
|
|
|
APPEND_CH(val);
|
|
|
|
if (m_bAlignLeft)
|
|
for (i = 1; i < (size_t)m_nMinWidth; i++)
|
|
APPEND_CH(wxT(' '));
|
|
}
|
|
break;
|
|
|
|
case wxPAT_PCHAR:
|
|
case wxPAT_PWCHAR:
|
|
{
|
|
wxString s;
|
|
if ( !p->pad_str )
|
|
{
|
|
if ( m_nMaxWidth >= 6 )
|
|
s = wxT("(null)");
|
|
}
|
|
else if (m_type == wxPAT_PCHAR)
|
|
s.assign(static_cast<const char *>(p->pad_str));
|
|
else // m_type == wxPAT_PWCHAR
|
|
s.assign(static_cast<const wchar_t *>(p->pad_str));
|
|
|
|
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(wxT(' '));
|
|
}
|
|
|
|
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(wxT(' '));
|
|
}
|
|
}
|
|
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
|
|
{
|
|
typedef wxPrintfConvSpec<CharType> ConvSpec;
|
|
|
|
wxPrintfConvSpecParser(const CharType *fmt)
|
|
{
|
|
nspecs =
|
|
nargs = 0;
|
|
posarg_present =
|
|
nonposarg_present = false;
|
|
|
|
memset(pspec, 0, sizeof(pspec));
|
|
|
|
// parse the format string
|
|
for ( const CharType *toparse = fmt; *toparse != wxT('\0'); toparse++ )
|
|
{
|
|
// skip everything except format specifications
|
|
if ( *toparse != '%' )
|
|
continue;
|
|
|
|
// also skip escaped percent signs
|
|
if ( toparse[1] == '%' )
|
|
{
|
|
toparse++;
|
|
continue;
|
|
}
|
|
|
|
ConvSpec *spec = &specs[nspecs];
|
|
spec->Init();
|
|
|
|
// attempt to parse this format specification
|
|
if ( !spec->Parse(toparse) )
|
|
continue;
|
|
|
|
// advance to the end of this specifier
|
|
toparse = spec->m_pArgEnd;
|
|
|
|
// special handling for specifications including asterisks: we need
|
|
// to reserve an extra slot (or two if asterisks were used for both
|
|
// width and precision) in specs array in this case
|
|
if ( const char *f = strchr(spec->m_szFlags, '*') )
|
|
{
|
|
unsigned numAsterisks = 1;
|
|
if ( strchr(++f, '*') )
|
|
numAsterisks++;
|
|
|
|
for ( unsigned n = 0; n < numAsterisks; n++ )
|
|
{
|
|
if ( ++nspecs == wxMAX_SVNPRINTF_ARGUMENTS )
|
|
break;
|
|
|
|
// TODO: we need to support specifiers of the form "%2$*1$s"
|
|
// (this is the same as "%*s") as if any positional arguments
|
|
// are used all asterisks must be positional as well but this
|
|
// requires a lot of changes in this code (basically we'd need
|
|
// to rewrite Parse() to return "*" and conversion itself as
|
|
// separate entries)
|
|
if ( posarg_present )
|
|
{
|
|
wxFAIL_MSG
|
|
(
|
|
wxString::Format
|
|
(wxASCII_STR(
|
|
"Format string \"%s\" uses both positional "
|
|
"parameters and '*' but this is not currently "
|
|
"supported by this implementation, sorry."),
|
|
fmt
|
|
)
|
|
);
|
|
}
|
|
|
|
specs[nspecs] = *spec;
|
|
|
|
// make an entry for '*' and point to it from pspec
|
|
spec->Init();
|
|
spec->m_type = wxPAT_STAR;
|
|
pspec[nargs++] = spec;
|
|
|
|
spec = &specs[nspecs];
|
|
}
|
|
|
|
// If we hit the maximal number of arguments inside the inner
|
|
// loop, break out of the outer one as well.
|
|
if ( nspecs == wxMAX_SVNPRINTF_ARGUMENTS )
|
|
break;
|
|
}
|
|
|
|
|
|
// check if this is a positional or normal argument
|
|
if ( spec->m_pos > 0 )
|
|
{
|
|
// the positional arguments start from number 1 so we need
|
|
// to adjust the index
|
|
spec->m_pos--;
|
|
|
|
// We could be reusing an already existing argument, only
|
|
// increment their number if it's really a new one.
|
|
if ( spec->m_pos >= nargs )
|
|
{
|
|
nargs = spec->m_pos + 1;
|
|
}
|
|
else if ( pspec[spec->m_pos] ) // Had we seen it before?
|
|
{
|
|
// Check that the type specified this time is compatible
|
|
// with the previously-specified type.
|
|
wxASSERT_MSG
|
|
(
|
|
pspec[spec->m_pos]->m_type == spec->m_type,
|
|
"Positional parameter specified multiple times "
|
|
"with incompatible types."
|
|
);
|
|
}
|
|
|
|
posarg_present = true;
|
|
}
|
|
else // not a positional argument...
|
|
{
|
|
spec->m_pos = nargs++;
|
|
nonposarg_present = true;
|
|
}
|
|
|
|
// this conversion specifier is tied to the pos-th argument...
|
|
pspec[spec->m_pos] = spec;
|
|
|
|
if ( ++nspecs == wxMAX_SVNPRINTF_ARGUMENTS )
|
|
break;
|
|
}
|
|
|
|
|
|
// warn if we lost any arguments (the program probably will crash
|
|
// anyhow because of stack corruption...)
|
|
if ( nspecs == wxMAX_SVNPRINTF_ARGUMENTS )
|
|
{
|
|
wxFAIL_MSG
|
|
(
|
|
wxString::Format
|
|
(wxASCII_STR(
|
|
"wxVsnprintf() currently supports only %d arguments, "
|
|
"but format string \"%s\" defines more of them.\n"
|
|
"You need to change wxMAX_SVNPRINTF_ARGUMENTS and "
|
|
"recompile if more are really needed."),
|
|
fmt, wxMAX_SVNPRINTF_ARGUMENTS
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
// total number of valid elements in specs
|
|
unsigned nspecs;
|
|
|
|
// total number of arguments, also number of valid elements in pspec, and
|
|
// always less than or (usually) equal to nspecs
|
|
unsigned nargs;
|
|
|
|
// all format specifications in this format string in order of their
|
|
// appearance (which may be different from arguments order)
|
|
ConvSpec specs[wxMAX_SVNPRINTF_ARGUMENTS];
|
|
|
|
// pointer to specs array element for the N-th argument
|
|
ConvSpec *pspec[wxMAX_SVNPRINTF_ARGUMENTS];
|
|
|
|
// true if any positional/non-positional parameters are used
|
|
bool posarg_present,
|
|
nonposarg_present;
|
|
};
|
|
|
|
#undef APPEND_CH
|
|
#undef CHECK_PREC
|
|
|
|
#endif // _WX_PRIVATE_WXPRINTF_H_
|