/////////////////////////////////////////////////////////////////////////////
// Name: src/common/wxchar.cpp
// Purpose: wxChar implementation
-// Author: Ove Kåven
-// Modified by: Ron Lee
+// Author: Ove Kaven
+// Modified by: Ron Lee, Francesco Montorsi
// Created: 09/04/99
// RCS-ID: $Id$
// Copyright: (c) wxWidgets copyright
#pragma hdrstop
#endif
+#include "wx/wxchar.h"
+
#define _ISOC9X_SOURCE 1 // to get vsscanf()
#define _BSD_SOURCE 1 // to still get strdup()
#endif
#ifndef WX_PRECOMP
- #include "wx/wxchar.h"
#include "wx/string.h"
#include "wx/hash.h"
+ #include "wx/utils.h" // for wxMin and wxMax
+ #include "wx/log.h"
#endif
#if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
// ----------------------------------------------------------------------------
// implement [v]snprintf() if the system doesn't provide a safe one
+// or if the system's one does not support positional parameters
+// (very useful for i18n purposes)
// ----------------------------------------------------------------------------
#if !defined(wxVsnprintf_)
-int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
- const wxChar *format, va_list argptr)
+
+// wxUSE_STRUTILS says our wxVsnprintf_ implementation to use or not to
+// use wxStrlen and wxStrncpy functions over one-char processing loops.
+//
+// Some benchmarking revealed that wxUSE_STRUTILS == 1 has the following
+// effects:
+// -> on Windows:
+// when in ANSI mode, this setting does not change almost anything
+// when in Unicode mode, it gives ~ 50% of slowdown !
+// -> on Linux:
+// both in ANSI and Unicode mode it gives ~ 60% of speedup !
+//
+#if defined(WIN32) && wxUSE_UNICODE
+#define wxUSE_STRUTILS 0
+#else
+#define wxUSE_STRUTILS 1
+#endif
+
+// some limits of our implementation
+#define wxMAX_SVNPRINTF_ARGUMENTS 16
+#define wxMAX_SVNPRINTF_FLAGBUFFER_LEN 32
+#define wxMAX_SVNPRINTF_SCRATCHBUFFER_LEN 512
+
+
+// wxVsnprintf() needs to use a *system* implementation of swnprintf()
+// in order to perform some internal tasks.
+// NB: we cannot just use wxSnprintf() because for some systems it maybe
+// implemented later in this file using wxVsnprintf() and that would
+// result in an endless recursion and thus in a stack overflow
+#if wxUSE_UNICODE
+ #if defined(__WINDOWS__) && !defined(HAVE_SWPRINTF)
+ // all compilers under Windows should have swprintf()
+ #define HAVE_SWPRINTF
+ #endif
+
+ // NB: MSVC 6 has only non-standard swprintf() declaration and while MSVC 7
+ // and 7.1 do have the standard one, it's completely broken unless
+ // /Zc:wchar_t is used while the other one works so use it instead, and
+ // only VC8 has a working standard-compliant swprintf()
+ #if defined(__WXWINCE__) || \
+ (defined(__VISUALC__) && __VISUALC__ < 1400) || \
+ defined(__GNUWIN32__) || \
+ defined(__BORLANDC__)
+ #ifndef HAVE_BROKEN_SWPRINTF_DECL
+ #define HAVE_BROKEN_SWPRINTF_DECL
+ #endif
+ #endif
+
+ // problem: on some systems swprintf takes the 'max' argument while on
+ // others it doesn't
+ #if defined(HAVE_BROKEN_SWPRINTF_DECL)
+ // like when using sprintf(), since 'max' is not used, wxVsnprintf()
+ // should always ensure that 'buff' is big enough for all common needs
+ #define system_sprintf(buff, max, flags, data) \
+ ::swprintf(buff, flags, data)
+
+ #define SYSTEM_SPRINTF_IS_UNSAFE
+ #else
+ #if !defined(HAVE_SWPRINTF)
+ #error wxVsnprintf() needs a system swprintf() implementation!
+ #endif
+
+ #define system_sprintf(buff, max, flags, data) \
+ ::swprintf(buff, max, flags, data)
+ #endif
+#else // !wxUSE_UNICODE
+ #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
+#endif // wxUSE_UNICODE/!wxUSE_UNICODE
+
+
+
+// the conversion specifiers accepted by wxVsnprintf_
+enum wxPrintfArgType {
+ wxPAT_INVALID = -1,
+
+ wxPAT_INT, // %d, %i, %o, %u, %x, %X
+ wxPAT_LONGINT, // %ld, etc
+#if SIZEOF_LONG_LONG
+ 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 wxVsnprintf_
+typedef union {
+ int pad_int; // %d, %i, %o, %u, %x, %X
+ long int pad_longint; // %ld, etc
+#if SIZEOF_LONG_LONG
+ long long int 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)
+
+ char *pad_pchar; // %s (related to a char *)
+ wchar_t *pad_pwchar; // %s (related to a wchar_t *)
+
+ int *pad_nint; // %n
+ short int *pad_nshortint; // %hn
+ long int *pad_nlongint; // %ln
+} wxPrintfArg;
+
+
+// Contains parsed data relative to a conversion specifier given to
+// wxVsnprintf_ 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...
+class wxPrintfConvSpec
{
- // buffer to avoid dynamic memory allocation each time for small strings
- char szScratch[1024];
+public:
- // number of characters in the buffer so far, must be less than lenMax
- size_t lenCur = 0;
+ // 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:
- for ( size_t n = 0; ; n++ )
+ // 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
{
- const wxChar chCur = format[n];
+#define CHECK_PREC \
+ if (in_prec && !prec_dot) \
+ { \
+ m_szFlags[flagofs++] = wxT('.'); \
+ prec_dot = true; \
+ }
- if ( chCur == wxT('%') )
+ // what follows '%'?
+ const wxChar ch = *(++m_pArgEnd);
+ switch ( ch )
{
- static char s_szFlags[256] = "%";
- size_t flagofs = 1;
- bool adj_left = false,
- in_prec = false,
- prec_dot = false,
- done = false;
- int ilen = 0;
- size_t min_width = 0,
- max_width = wxSTRING_MAXLEN;
- do
- {
+ 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
-#define CHECK_PREC \
- if (in_prec && !prec_dot) \
- { \
- s_szFlags[flagofs++] = '.'; \
- prec_dot = true; \
+ // 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) \
{ \
} \
}
- // what follows '%'?
- const wxChar ch = format[++n];
- switch ( 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;
+
+#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)
{
- case wxT('\0'):
- APPEND_CH(_T('\0'));
+ // user passed a character explicitely indicated as ANSI...
+ const char buf[2] = { p->pad_char, 0 };
+ val = wxString(buf, wxConvLibc)[0u];
- done = true;
- break;
+ //wprintf(L"converting ANSI=>Unicode"); // for debug
+ }
+#else
+ p->pad_char;
- case wxT('%'):
- APPEND_CH(_T('%'));
- done = true;
- break;
+#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];
- case wxT('#'):
- case wxT('0'):
- case wxT(' '):
- case wxT('+'):
- case wxT('\''):
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ //printf("converting Unicode=>ANSI"); // for debug
+ }
+#endif
+#endif
- case wxT('-'):
- CHECK_PREC
- adj_left = true;
- s_szFlags[flagofs++] = ch;
- break;
+ size_t i;
- case wxT('.'):
- CHECK_PREC
- in_prec = true;
- prec_dot = false;
- max_width = 0;
- // dot will be auto-added to s_szFlags if non-negative
- // number follows
- break;
+ if (!m_bAlignLeft)
+ for (i = 1; i < (size_t)m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
- case wxT('h'):
- ilen = -1;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ APPEND_CH(val);
- case wxT('l'):
- ilen = 1;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ if (m_bAlignLeft)
+ for (i = 1; i < (size_t)m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
+ break;
- case wxT('q'):
- case wxT('L'):
- ilen = 2;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ case wxPAT_PCHAR:
+ case wxPAT_PWCHAR:
+ {
+ wxString s;
+ const wxChar *val =
+#if wxUSE_UNICODE
+ p->pad_pwchar;
- case wxT('Z'):
- ilen = 3;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ if (m_type == wxPAT_PCHAR)
+ {
+ // user passed a string explicitely indicated as ANSI...
+ val = s = wxString(p->pad_pchar, wxConvLibc);
- case wxT('*'):
- {
- int len = va_arg(argptr, int);
- if (in_prec)
- {
- if (len<0) break;
- CHECK_PREC
- max_width = len;
- }
- else
- {
- if (len<0)
- {
- adj_left = !adj_left;
- s_szFlags[flagofs++] = '-';
- len = -len;
- }
- min_width = len;
- }
- flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
- }
- break;
+ //wprintf(L"converting ANSI=>Unicode"); // for debug
+ }
+#else
+ p->pad_pchar;
- 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 ( (format[n] >= wxT('0')) &&
- (format[n] <= wxT('9')) )
- {
- s_szFlags[flagofs++] = format[n];
- len = len*10 + (format[n] - wxT('0'));
- n++;
- }
-
- if (in_prec)
- max_width = len;
- else
- min_width = len;
-
- n--; // the main loop pre-increments n again
- }
- break;
+#if wxUSE_WCHAR_T
+ if (m_type == wxPAT_PWCHAR)
+ {
+ // user passed a string explicitely indicated as Unicode...
+ val = s = wxString(p->pad_pwchar, wxConvLibc);
- case wxT('d'):
- case wxT('i'):
- case wxT('o'):
- case wxT('u'):
- case wxT('x'):
- case wxT('X'):
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- s_szFlags[flagofs] = '\0';
- if (ilen == 0 )
- {
- int val = va_arg(argptr, int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- 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
- short int val = (short int) va_arg(argptr, int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == 1)
- {
- long int val = va_arg(argptr, long int);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else if (ilen == 2)
- {
-#if SIZEOF_LONG_LONG
- long long int val = va_arg(argptr, long long int);
- ::sprintf(szScratch, s_szFlags, val);
-#else // !long long
- long int val = va_arg(argptr, long int);
- ::sprintf(szScratch, s_szFlags, val);
-#endif // long long/!long long
- }
- else if (ilen == 3)
- {
- size_t val = va_arg(argptr, size_t);
- ::sprintf(szScratch, s_szFlags, val);
- }
-
- {
- const wxMB2WXbuf tmp =
- wxConvLibc.cMB2WX(szScratch);
- APPEND_STR(tmp);
- }
-
- done = true;
- break;
+ //printf("converting Unicode=>ANSI"); // for debug
+ }
+#endif
+#endif
+ int len;
- case wxT('e'):
- case wxT('E'):
- case wxT('f'):
- case wxT('g'):
- case wxT('G'):
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- s_szFlags[flagofs] = '\0';
- if (ilen == 2)
- {
- long double val = va_arg(argptr, long double);
- ::sprintf(szScratch, s_szFlags, val);
- }
- else
- {
- double val = va_arg(argptr, double);
- ::sprintf(szScratch, s_szFlags, val);
- }
-
- {
- const wxMB2WXbuf tmp =
- wxConvLibc.cMB2WX(szScratch);
- APPEND_STR(tmp);
- }
-
- done = true;
- break;
+ 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;
+ }
- case wxT('p'):
- {
- void *val = va_arg(argptr, void *);
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- s_szFlags[flagofs] = '\0';
- ::sprintf(szScratch, s_szFlags, val);
+ int i;
- const wxMB2WXbuf tmp =
- wxConvLibc.cMB2WX(szScratch);
- APPEND_STR(tmp);
+ if (!m_bAlignLeft)
+ {
+ for (i = len; i < m_nMinWidth; i++)
+ APPEND_CH(_T(' '));
+ }
- done = true;
- }
- break;
+#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
- case wxT('c'):
- {
- int val = va_arg(argptr, int);
-#if wxUSE_UNICODE
- if (ilen == -1)
- {
- const char buf[2] = { val, 0 };
- val = wxString(buf, wxConvLibc)[0u];
- }
-#elif wxUSE_WCHAR_T
- if (ilen == 1)
- {
- const wchar_t buf[2] = { val, 0 };
- val = wxString(buf, wxConvLibc)[0u];
- }
+ 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
- size_t i;
- if (!adj_left)
- for (i = 1; i < min_width; i++)
- APPEND_CH(_T(' '));
+ // 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;
- APPEND_CH(val);
+ default:
+ break; // all other cases were completed previously
+ }
- if (adj_left)
- for (i = 1; i < min_width; i++)
- APPEND_CH(_T(' '));
+ return lenCur;
+}
- done = true;
- }
- break;
+// 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;
- case wxT('s'):
- {
- const wxChar *val = NULL;
-#if wxUSE_UNICODE
- wxString s;
-
- if (ilen == -1)
- {
- // wx extension: we'll let %hs mean non-Unicode
- // strings
- char *v = va_arg(argptr, char *);
-
- if (v)
- val = s = wxString(v, wxConvLibc);
- }
- else
-#elif wxUSE_WCHAR_T
- wxString s;
-
- if (ilen == 1)
- {
- // %ls means Unicode strings
- wchar_t *v = va_arg(argptr, wchar_t *);
-
- if (v)
- val = s = wxString(v, wxConvLibc);
- }
- else
+ 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
- {
- val = va_arg(argptr, wxChar *);
- }
-
- size_t len = 0;
-
- if (val)
- {
- for ( len = 0;
- val[len] && (len < max_width);
- len++ )
- ;
- }
- else if (max_width >= 6)
- {
- val = wxT("(null)");
- len = 6;
- }
- else
- {
- val = wxEmptyString;
- len = 0;
- }
-
- size_t i;
-
- if (!adj_left)
- for (i = len; i < min_width; i++)
- APPEND_CH(_T(' '));
-
- for (i = 0; i < len; i++)
- APPEND_CH(val[i]);
-
- if (adj_left)
- for (i = len; i < min_width; i++)
- APPEND_CH(_T(' '));
-
- done = true;
- }
- break;
- case wxT('n'):
- if (ilen == 0)
- {
- int *val = va_arg(argptr, int *);
- *val = lenCur;
- }
- else if (ilen == -1)
- {
- short int *val = va_arg(argptr, short int *);
- *val = lenCur;
- }
- else if (ilen >= 1)
- {
- long int *val = va_arg(argptr, long int *);
- *val = lenCur;
- }
- done = true;
- break;
+ // required memory:
+ wxPrintfConvSpec arg[wxMAX_SVNPRINTF_ARGUMENTS];
+ wxPrintfArg argdata[wxMAX_SVNPRINTF_ARGUMENTS];
+ wxPrintfConvSpec *pspec[wxMAX_SVNPRINTF_ARGUMENTS] = { NULL };
- default:
- // bad format, leave unchanged
- APPEND_CH(_T('%'));
- APPEND_CH(ch);
- done = true;
- break;
+ 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
}
}
- while (!done);
+ 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 %%
+ }
}
- else
+ }
+
+ 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)
{
- APPEND_CH(chCur);
+ // 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;
}
- // terminating NUL?
- if ( !chCur )
- break;
+ 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;
}
int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
+ // VsnprintfTestCase reveals that glibc's implementation of vswprintf
+ // doesn't nul terminate on truncation.
+ str[size - 1] = 0;
+
va_end(argptr);
return ret;
projects / wxWidgets.git / blobdiff