/////////////////////////////////////////////////////////////////////////////
// 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
#include "wx/string.h"
#include "wx/hash.h"
#endif
+ #include "wx/utils.h" // for wxMin and wxMax
#if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
#include <windef.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 64
+#define wxMAX_SVNPRINTF_FLAGBUFFER_LEN 32
+
+// 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 pos;
+
+ // the type of this conversion specifier
+ wxPrintfArgType 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 min_width, max_width;
+
+ // does the argument need to the be aligned to left ?
+ bool adj_left;
+
+ // 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 *argpos;
+
+ // 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 *argend;
+
+ // a little buffer where formatting flags like #+\.hlqLZ are stored by Parse()
+ // for use in Process()
+ // NB: this buffer can be safely a char buffer instead of a wchar_t buffer
+ // since it's used only for numeric conversion specifier and always
+ // with sprintf().
+ char szFlags[wxMAX_SVNPRINTF_FLAGBUFFER_LEN];
- for ( size_t n = 0; ; n++ )
+
+public:
+
+ // we don't declare this as a constructor otherwise it would be called
+ // automatically and we don't want this: to be optimized, wxVsnprintf_
+ // calls this function only on really-used instances of this class.
+ void Init();
+
+ // Parses the first conversion specifier in the given string, which must
+ // begin with a '%'. Returns false if the first '%' does not introduce a
+ // (valid) conversion specifier and thus should be ignored.
+ bool Parse(const wxChar *format);
+
+ // Process this conversion specifier and puts the result in the given
+ // buffer. Returns the number of characters written in 'buf' or -1 if
+ // there's not enough space.
+ int Process(wxChar *buf, size_t lenMax, wxPrintfArg *p);
+
+ // Loads the argument of this conversion specifier from given va_list.
+ bool LoadArg(wxPrintfArg *p, va_list &argptr);
+
+private:
+ // An helper function of LoadArg() which is used to handle the '*' flag
+ void ReplaceAsteriskWith(int w);
+};
+
+void wxPrintfConvSpec::Init()
+{
+ min_width = 0;
+ max_width = 0xFFFF;
+ pos = 0;
+ adj_left = false;
+ argpos = argend = NULL;
+ type = wxPAT_INVALID;
+
+ // this character will never be removed from szFlags array and
+ // is important when calling sprintf() in wxPrintfConvSpec::Process() !
+ szFlags[0] = '%';
+}
+
+bool wxPrintfConvSpec::Parse(const wxChar *format)
+{
+ bool done = false;
+
+ // temporary parse data
+ size_t flagofs = 1;
+ bool in_prec, prec_dot;
+ int ilen = 0;
+
+ adj_left = in_prec = prec_dot = false;
+ argpos = argend = format;
+ do
{
- const wxChar chCur = format[n];
+#define CHECK_PREC \
+ if (in_prec && !prec_dot) \
+ { \
+ szFlags[flagofs++] = (char)'.'; \
+ prec_dot = true; \
+ }
- if ( chCur == wxT('%') )
+ // what follows '%'?
+ const wxChar ch = *(++argend);
+ 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
+ szFlags[flagofs++] = (char)ch;
+ break;
+
+ case wxT('-'):
+ CHECK_PREC
+ adj_left = true;
+ szFlags[flagofs++] = (char)ch;
+ break;
+
+ case wxT('.'):
+ CHECK_PREC
+ in_prec = true;
+ prec_dot = false;
+ max_width = 0;
+ // dot will be auto-added to szFlags if non-negative
+ // number follows
+ break;
+
+ case wxT('h'):
+ ilen = -1;
+ CHECK_PREC
+ szFlags[flagofs++] = (char)ch;
+ break;
+
+ case wxT('l'):
+ ilen = 1;
+ CHECK_PREC
+ szFlags[flagofs++] = (char)ch;
+ break;
+
+ case wxT('q'):
+ case wxT('L'):
+ ilen = 2;
+ CHECK_PREC
+ szFlags[flagofs++] = (char)ch;
+ break;
+
+ case wxT('Z'):
+ ilen = 3;
+ CHECK_PREC
+ szFlags[flagofs++] = (char)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...
+ max_width = -1;
+ }
+ else
+ {
+ // tell Process() to use the next argument
+ // in the stack as minwidth...
+ min_width = -1;
+ }
+
+ // save the * in our formatting buffer...
+ // will be replaced later by Process()
+ 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 ( (*argend >= wxT('0')) &&
+ (*argend <= wxT('9')) )
+ {
+ szFlags[flagofs++] = (char)(*argend);
+ len = len*10 + (*argend - wxT('0'));
+ argend++;
+ }
+
+ if (in_prec)
+ max_width = len;
+ else
+ min_width = len;
+
+ argend--; // the main loop pre-increments n again
}
+ break;
+
+ case wxT('$'): // a positional parameter (e.g. %2$s) ?
+ {
+ if (min_width <= 0)
+ break; // ignore this formatting flag as no
+ // numbers are preceding it
+
+ // remove from szFlags all digits previously added
+ do {
+ flagofs--;
+ } while (szFlags[flagofs] >= '1' &&
+ szFlags[flagofs] <= '9');
+
+ // re-adjust the offset making it point to the
+ // next free char of szFlags
+ flagofs++;
+
+ pos = min_width;
+ min_width = 0;
+ }
+ break;
+
+ case wxT('d'):
+ case wxT('i'):
+ case wxT('o'):
+ case wxT('u'):
+ case wxT('x'):
+ case wxT('X'):
+ CHECK_PREC
+ szFlags[flagofs++] = (char)ch;
+ szFlags[flagofs] = (char)'\0';
+ if (ilen == 0)
+ 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
+ type = wxPAT_INT;
+ else if (ilen == 1)
+ type = wxPAT_LONGINT;
+ else if (ilen == 2)
+#if SIZEOF_LONG_LONG
+ type = wxPAT_LONGLONGINT;
+#else // !long long
+ type = wxPAT_LONGINT;
+#endif // long long/!long long
+ else if (ilen == 3)
+ type = wxPAT_SIZET;
+ done = true;
+ break;
+
+ case wxT('e'):
+ case wxT('E'):
+ case wxT('f'):
+ case wxT('g'):
+ case wxT('G'):
+ CHECK_PREC
+ szFlags[flagofs++] = (char)ch;
+ szFlags[flagofs] = (char)'\0';
+ if (ilen == 2)
+ type = wxPAT_LONGDOUBLE;
+ else
+ type = wxPAT_DOUBLE;
+ done = true;
+ break;
+
+ case wxT('p'):
+ type = wxPAT_POINTER;
+ done = true;
+ break;
+
+ case wxT('c'):
+ if (ilen == -1)
+ {
+ // in Unicode mode %hc == ANSI character
+ // and in ANSI mode, %hc == %c == ANSI...
+ type = wxPAT_CHAR;
+ }
+ else if (ilen == 1)
+ {
+ // in ANSI mode %lc == Unicode character
+ // and in Unicode mode, %lc == %c == Unicode...
+ type = wxPAT_WCHAR;
+ }
+ else
+ {
+#if wxUSE_UNICODE
+ // in Unicode mode, %c == Unicode character
+ type = wxPAT_WCHAR;
+#else
+ // in ANSI mode, %c == ANSI character
+ 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)
+ type = wxPAT_PCHAR;
+ }
+ else if (ilen == 1)
+ {
+ // in Unicode mode, %ls == %s == Unicode string
+ // in ANSI mode, %ls == Unicode string
+ type = wxPAT_PWCHAR;
+ }
+ else
+ {
+#if wxUSE_UNICODE
+ type = wxPAT_PWCHAR;
+#else
+ type = wxPAT_PCHAR;
+#endif
+ }
+ done = true;
+ break;
+
+ case wxT('n'):
+ if (ilen == 0)
+ type = wxPAT_NINT;
+ else if (ilen == -1)
+ type = wxPAT_NSHORTINT;
+ else if (ilen >= 1)
+ type = wxPAT_NLONGINT;
+ done = true;
+ break;
+
+ default:
+ // bad format, don't consider this an argument;
+ // leave it unchanged
+ return false;
+ }
+ }
+ while (!done);
+
+ return true; // parsing was successful
+}
+
+
+void wxPrintfConvSpec::ReplaceAsteriskWith(int w)
+{
+ char temp[wxMAX_SVNPRINTF_FLAGBUFFER_LEN];
+
+ // find the first * in our flag buffer
+ char *pwidth = strchr(szFlags, '*');
+ wxASSERT(pwidth);
+
+ // save what follows the * (the +1 is to skip it!)
+ strcpy(temp, pwidth+1);
+ if (w < 0) {
+ pwidth[0] = '-';
+ pwidth++;
+ }
+
+ // replace * with the actual integer given as width
+ int offset = ::sprintf(pwidth,"%d",abs(w));
+
+ // restore after the expanded * what was following it
+ strcpy(pwidth+offset, temp);
+}
+
+bool wxPrintfConvSpec::LoadArg(wxPrintfArg *p, va_list &argptr)
+{
+ // did the '*' width/precision specifier was used ?
+ if (max_width == -1)
+ {
+ // take the maxwidth specifier from the stack
+ max_width = va_arg(argptr, int);
+ if (max_width < 0)
+ max_width = 0;
+ else
+ ReplaceAsteriskWith(max_width);
+ }
+
+ if (min_width == -1)
+ {
+ // take the minwidth specifier from the stack
+ min_width = va_arg(argptr, int);
+
+ ReplaceAsteriskWith(min_width);
+ if (min_width < 0)
+ {
+ adj_left = !adj_left;
+ min_width = -min_width;
+ }
+ }
+
+ switch (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
+ static char szScratch[1024];
+ size_t lenCur = 0;
#define APPEND_CH(ch) \
{ \
} \
}
- // what follows '%'?
- const wxChar ch = format[++n];
- switch ( ch )
- {
- case wxT('\0'):
- APPEND_CH(_T('\0'));
+ switch ( type )
+ {
+ case wxPAT_INT:
+ ::sprintf(szScratch, szFlags, p->pad_int);
+ break;
- done = true;
- break;
+ case wxPAT_LONGINT:
+ ::sprintf(szScratch, szFlags, p->pad_longint);
+ break;
- case wxT('%'):
- APPEND_CH(_T('%'));
- done = true;
- break;
+#if SIZEOF_LONG_LONG
+ case wxPAT_LONGLONGINT:
+ ::sprintf(szScratch, szFlags, p->pad_longlongint);
+ break;
+#endif // SIZEOF_LONG_LONG
- case wxT('#'):
- case wxT('0'):
- case wxT(' '):
- case wxT('+'):
- case wxT('\''):
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ case wxPAT_SIZET:
+ ::sprintf(szScratch, szFlags, p->pad_sizet);
+ break;
- case wxT('-'):
- CHECK_PREC
- adj_left = true;
- s_szFlags[flagofs++] = ch;
- break;
+ case wxPAT_LONGDOUBLE:
+ ::sprintf(szScratch, szFlags, p->pad_longdouble);
+ break;
- 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;
+ case wxPAT_DOUBLE:
+ ::sprintf(szScratch, szFlags, p->pad_double);
+ break;
- case wxT('h'):
- ilen = -1;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ case wxPAT_POINTER:
+ ::sprintf(szScratch, szFlags, p->pad_pointer);
+ break;
- case wxT('l'):
- ilen = 1;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ case wxPAT_CHAR:
+ case wxPAT_WCHAR:
+ {
+ wxChar val =
+#if wxUSE_UNICODE
+ p->pad_wchar;
- case wxT('q'):
- case wxT('L'):
- ilen = 2;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+ if (type == wxPAT_CHAR) {
+ // user passed a character explicitely indicated as ANSI...
+ const char buf[2] = { p->pad_char, 0 };
+ val = wxString(buf, wxConvLibc)[0u];
+ }
+#else
+ p->pad_char;
- case wxT('Z'):
- ilen = 3;
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- break;
+#if wxUSE_WCHAR_T
+ if (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];
+ }
+#endif
+#endif
- 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;
+ size_t i;
- 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 (!adj_left)
+ for (i = 1; i < (size_t)min_width; i++)
+ APPEND_CH(_T(' '));
- 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;
+ APPEND_CH(val);
- 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 (adj_left)
+ for (i = 1; i < (size_t)min_width; i++)
+ APPEND_CH(_T(' '));
+ }
+ break;
- case wxT('p'):
- {
- void *val = va_arg(argptr, void *);
- CHECK_PREC
- s_szFlags[flagofs++] = ch;
- s_szFlags[flagofs] = '\0';
- ::sprintf(szScratch, s_szFlags, val);
+ case wxPAT_PCHAR:
+ case wxPAT_PWCHAR:
+ {
+ wxString s;
+ const wxChar *val =
+#if wxUSE_UNICODE
+ p->pad_pwchar;
- const wxMB2WXbuf tmp =
- wxConvLibc.cMB2WX(szScratch);
- APPEND_STR(tmp);
+ if (type == wxPAT_PCHAR) {
+ // user passed a string explicitely indicated as ANSI...
+ val = s = wxString(p->pad_pchar, wxConvLibc);
+ }
+#else
+ p->pad_pchar;
- done = true;
- }
- break;
+#if wxUSE_WCHAR_T
+ if (type == wxPAT_PWCHAR) {
+ // user passed a string explicitely indicated as Unicode...
+ val = s = wxString(p->pad_pwchar, wxConvLibc);
+ }
+#endif
+#endif
+ int len;
- 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 (val)
+ {
+#if wxUSE_STRUTILS
+ // at this point we are sure that max_width is positive or null
+ // (see top of wxPrintfConvSpec::LoadArg)
+ len = wxMin((unsigned int)max_width, wxStrlen(val));
+#else
+ for ( len = 0; val[len] && (len < max_width); len++ )
+ ;
#endif
- size_t i;
+ }
+ else if (max_width >= 6)
+ {
+ val = wxT("(null)");
+ len = 6;
+ }
+ else
+ {
+ val = wxEmptyString;
+ len = 0;
+ }
- if (!adj_left)
- for (i = 1; i < min_width; i++)
- APPEND_CH(_T(' '));
+ int i;
- APPEND_CH(val);
+ if (!adj_left)
+ {
+ for (i = len; i < min_width; i++)
+ APPEND_CH(_T(' '));
+ }
- if (adj_left)
- for (i = 1; i < min_width; i++)
- APPEND_CH(_T(' '));
+#if wxUSE_STRUTILS
+ // at this point we are sure that max_width is positive or null
+ // (see top of wxPrintfConvSpec::LoadArg)
+ 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
- done = true;
- }
- break;
+ if (adj_left)
+ {
+ for (i = len; i < min_width; i++)
+ APPEND_CH(_T(' '));
+ }
+ }
+ break;
- 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
-#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 wxPAT_NINT:
+ *p->pad_nint = lenCur;
+ 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;
+ case wxPAT_NSHORTINT:
+ *p->pad_nshortint = (short int)lenCur;
+ break;
- default:
- // bad format, leave unchanged
- APPEND_CH(_T('%'));
- APPEND_CH(ch);
- done = true;
- break;
- }
+ case wxPAT_NLONGINT:
+ *p->pad_nlongint = lenCur;
+ 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 (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
+ {
+ const wxMB2WXbuf tmp = wxConvLibc.cMB2WX(szScratch);
+ size_t len = wxMin(lenMax, wxStrlen(tmp));
+ wxStrncpy(buf, tmp, len);
+ lenCur += len;
}
- while (!done);
+#else
+ {
+ const wxMB2WXbuf tmp =
+ wxConvLibc.cMB2WX(szScratch);
+ APPEND_STR(tmp);
+ }
+#endif
+ break;
+
+ default:
+ break; // all other cases were completed previously
+ }
+
+ return lenCur;
+}
+
+// differences from standard strncpy:
+// 1) copies everything from 'source' except for '%%' sequence which is copied as '%'
+// 2) returns the number of written characters in 'dest' as it could differ from given 'n'
+// 3) much less optimized, unfortunately...
+static int wxCopyStrWithPercents(wxChar *dest, const wxChar *source, size_t n)
+{
+ size_t written = 0;
+
+ if (n == 0)
+ return 0;
+
+ size_t i;
+ for ( i = 0; i < n-1; source++, i++)
+ {
+ dest[written++] = *source;
+ if (*(source+1) == wxT('%'))
+ {
+ // skip this additional '%' character
+ source++;
+ i++;
}
- else
+ }
+
+ 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)
+{
+ // cached data
+ static wxPrintfConvSpec arg[wxMAX_SVNPRINTF_ARGUMENTS];
+ static wxPrintfArg argdata[wxMAX_SVNPRINTF_ARGUMENTS];
+ static wxPrintfConvSpec *pspec[wxMAX_SVNPRINTF_ARGUMENTS] = { NULL };
+
+ size_t i;
+
+ // number of characters in the buffer so far, must be less than lenMax
+ size_t lenCur = 0;
+
+ size_t nargs = 0;
+ const wxChar *toparse = format;
+
+ // parse the format string
+ bool posarg_present = false, nonposarg_present = false;
+ for (; *toparse != wxT('\0'); toparse++)
+ {
+ if (*toparse == wxT('%') )
{
- APPEND_CH(chCur);
+ 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->argend;
+
+ if (current->pos > 0) {
+ // the positionals start from number 1... adjust the index
+ current->pos--;
+ posarg_present = true;
+ } else {
+ // not a positional argument...
+ current->pos = nargs;
+ nonposarg_present = true;
+ }
+
+ // this conversion specifier is tied to the pos-th argument...
+ pspec[current->pos] = current;
+ nargs++;
+
+ if (nargs == wxMAX_SVNPRINTF_ARGUMENTS)
+ break; // cannot handle any additional conv spec
+ }
}
+ }
- // terminating NUL?
- if ( !chCur )
- break;
+ 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] if user forgot a positional parameter (e.g. %$1s %$3s) ?
+ // or LoadArg false if wxPrintfConvSpec::Parse failed to set its '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].argpos - toparse );
+ if (lenCur+tocopy >= lenMax)
+ return -1; // not enough space in the output buffer !
+
+ 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].pos]);
+ if (n == -1)
+ return -1; // not enough space in the output buffer !
+ lenCur += n;
+
+ // the +1 is because wxPrintfConvSpec::argend points to the last character
+ // of the format specifier, but we are not interested to it...
+ toparse = arg[i].argend + 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;
+
+ // clean the static array portion used...
+ // NOTE: other arrays do not need cleanup!
+ memset(pspec, 0, sizeof(wxPrintfConvSpec*)*nargs);
+
+ wxASSERT(lenCur == wxStrlen(buf));
return lenCur;
}
projects / wxWidgets.git / blobdiff