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wxchar.cpp
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2002-09-08
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/////////////////////////////////////////////////////////////////////////////
// Name: wxchar.cpp
// Purpose: wxChar implementation
// Author: Ove Kσven
// Modified by:
// Created: 09/04/99
// RCS-ID: $Id: wxchar.cpp,v 1.45 2002/09/08 00:49:26 VZ Exp $
// Copyright: (c) wxWindows copyright
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "wxchar.h"
#endif
// ===========================================================================
// headers, declarations, constants
// ===========================================================================
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#define _ISOC9X_SOURCE 1 // to get vsscanf()
#define _BSD_SOURCE 1 // to still get strdup()
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include <time.h>
#ifndef WX_PRECOMP
#include "wx/defs.h"
#include "wx/wxchar.h"
#include "wx/string.h"
#include "wx/hash.h"
#endif
#if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
#include <windef.h>
#include <winbase.h>
#include <winnls.h>
#include <winnt.h>
#endif
#if wxUSE_WCHAR_T
size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
{
if (buf) {
if (!n || !*psz) {
if (n) *buf = wxT('\0');
return 0;
}
return mbstowcs(buf, psz, n);
}
// assume that we have mbsrtowcs() too if we have wcsrtombs()
#ifdef HAVE_WCSRTOMBS
mbstate_t mbstate;
return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
#else // !GNU libc
return mbstowcs((wchar_t *) NULL, psz, 0);
#endif // GNU
}
size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
{
if (buf) {
if (!n || !*pwz) {
// glibc2.1 chokes on null input
if (n) *buf = '\0';
return 0;
}
return wcstombs(buf, pwz, n);
}
#if HAVE_WCSRTOMBS
mbstate_t mbstate;
return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
#else // !GNU libc
return wcstombs((char *) NULL, pwz, 0);
#endif // GNU
}
#endif // wxUSE_WCHAR_T
bool WXDLLEXPORT wxOKlibc()
{
#if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
// glibc 2.0 uses UTF-8 even when it shouldn't
wchar_t res = 0;
if ((MB_CUR_MAX == 2) &&
(wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
(res==0x765)) {
// this is UTF-8 allright, check whether that's what we want
char *cur_locale = setlocale(LC_CTYPE, NULL);
if ((strlen(cur_locale) < 4) ||
(strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8")) ||
(strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
// nope, don't use libc conversion
return FALSE;
}
}
#endif
return TRUE;
}
#ifndef HAVE_WCSLEN
size_t WXDLLEXPORT wcslen(const wchar_t *s)
{
size_t len = 0;
while (s[len]) len++;
return len;
}
#endif
// ============================================================================
// printf() functions business
// ============================================================================
// ----------------------------------------------------------------------------
// implement [v]snprintf() if the system doesn't provide a safe one
// ----------------------------------------------------------------------------
#if !defined(wxVsnprintf_)
int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
const wxChar *format, va_list argptr)
{
// buffer to avoid dynamic memory allocation each time for small strings
char szScratch[1024];
// number of characters in the buffer so far, must be less than lenMax
size_t lenCur = 0;
for (size_t n = 0; format[n]; n++)
{
if (format[n] == wxT('%')) {
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 {
#define CHECK_PREC \
if (in_prec && !prec_dot) \
{ \
s_szFlags[flagofs++] = '.'; \
prec_dot = TRUE; \
}
#define APPEND_CH(ch) \
if ( lenCur == lenMax ) \
return -1; \
\
buf[lenCur++] = ch
#define APPEND_STR(s) \
{ \
for ( const wxChar *p = s; *p; p++ ) \
{ \
APPEND_CH(*p); \
} \
}
switch (format[++n]) {
case wxT('\0'):
APPEND_CH(_T('\0'));
done = TRUE;
break;
case wxT('%'):
APPEND_CH(_T('%'));
done = TRUE;
break;
case wxT('#'):
case wxT('0'):
case wxT(' '):
case wxT('+'):
case wxT('\''):
CHECK_PREC
s_szFlags[flagofs++] = format[n];
break;
case wxT('-'):
CHECK_PREC
adj_left = TRUE;
s_szFlags[flagofs++] = format[n];
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 wxT('h'):
ilen = -1;
CHECK_PREC
s_szFlags[flagofs++] = format[n];
break;
case wxT('l'):
ilen = 1;
CHECK_PREC
s_szFlags[flagofs++] = format[n];
break;
case wxT('q'):
case wxT('L'):
ilen = 2;
CHECK_PREC
s_szFlags[flagofs++] = format[n];
break;
case wxT('Z'):
ilen = 3;
CHECK_PREC
s_szFlags[flagofs++] = format[n];
break;
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;
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;
case wxT('d'):
case wxT('i'):
case wxT('o'):
case wxT('u'):
case wxT('x'):
case wxT('X'):
CHECK_PREC
s_szFlags[flagofs++] = format[n];
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'
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 int val = va_arg(argptr, long int);
::sprintf(szScratch, s_szFlags, val);
#endif
}
else if (ilen == 3) {
size_t val = va_arg(argptr, size_t);
::sprintf(szScratch, s_szFlags, val);
}
APPEND_STR(wxConvLibc.cMB2WX(szScratch));
done = TRUE;
break;
case wxT('e'):
case wxT('E'):
case wxT('f'):
case wxT('g'):
case wxT('G'):
CHECK_PREC
s_szFlags[flagofs++] = format[n];
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);
}
APPEND_STR(wxConvLibc.cMB2WX(szScratch));
done = TRUE;
break;
case wxT('p'):
{
void *val = va_arg(argptr, void *);
CHECK_PREC
s_szFlags[flagofs++] = format[n];
s_szFlags[flagofs] = '\0';
::sprintf(szScratch, s_szFlags, val);
APPEND_STR(wxConvLibc.cMB2WX(szScratch));
done = TRUE;
}
break;
case wxT('c'):
{
wxChar val = va_arg(argptr, int);
// we don't need to honor padding here, do we?
APPEND_CH(val);
done = TRUE;
}
break;
case wxT('s'):
if (ilen == -1) {
// wx extension: we'll let %hs mean non-Unicode strings
char *val = va_arg(argptr, char *);
#if wxUSE_UNICODE
// ASCII->Unicode constructor handles max_width right
wxString s(val, wxConvLibc, max_width);
#else
size_t len = wxSTRING_MAXLEN;
if (val) {
for (len = 0; val[len] && (len<max_width); len++);
} else val = wxT("(null)");
wxString s(val, len);
#endif
if (s.Len() < min_width)
s.Pad(min_width - s.Len(), wxT(' '), adj_left);
APPEND_STR(s);
} else {
wxChar *val = va_arg(argptr, wxChar *);
size_t len = wxSTRING_MAXLEN;
if (val) {
for (len = 0; val[len] && (len<max_width); len++);
} else val = wxT("(null)");
wxString s(val, len);
if (s.Len() < min_width)
s.Pad(min_width - s.Len(), wxT(' '), adj_left);
APPEND_STR(s);
}
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;
default:
if (wxIsalpha(format[n]))
// probably some flag not taken care of here yet
s_szFlags[flagofs++] = format[n];
else {
// bad format
APPEND_CH(_T('%')); // just to pass the glibc tst-printf.c
n--;
done = TRUE;
}
break;
}
} while (!done);
}
else
{
APPEND_CH(format[n]);
}
}
return lenCur;
}
#undef APPEND_CH
#undef APPEND_STR
#undef CHECK_PREC
#endif // !wxVsnprintfA
#if !defined(wxSnprintf_)
int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
{
va_list argptr;
va_start(argptr, format);
int iLen = wxVsnprintf_(buf, len, format, argptr);
va_end(argptr);
return iLen;
}
#endif // wxSnprintf_
// ----------------------------------------------------------------------------
// implement the standard IO functions for wide char if libc doesn't have them
// ----------------------------------------------------------------------------
#ifdef wxNEED_FPUTWC
int wxFputs(const wchar_t *ws, FILE *stream)
{
// counting the number of wide characters written isn't worth the trouble,
// simply distinguish between ok and error
return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
}
int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
{
wchar_t ws[2] = { wc, L'\0' };
return wxFputs(ws, stream);
}
#endif // wxNEED_FPUTWC
// NB: we only implement va_list functions here, the ones taking ... are
// defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
// the definitions there to avoid duplicating them here
#ifdef wxNEED_WPRINTF
// TODO: implement the scanf() functions
int vwscanf(const wchar_t *format, va_list argptr)
{
wxFAIL_MSG( _T("TODO") );
return -1;
}
int vswscanf(const wchar_t *ws, const wchar_t *format, va_list argptr)
{
wxFAIL_MSG( _T("TODO") );
return -1;
}
int vfwscanf(FILE *stream, const wchar_t *format, va_list argptr)
{
wxFAIL_MSG( _T("TODO") );
return -1;
}
#define vswprintf wxVsnprintf_
int vfwprintf(FILE *stream, const wchar_t *format, va_list argptr)
{
wxString s;
int rc = s.PrintfV(format, argptr);
if ( rc != -1 )
{
// we can't do much better without Unicode support in libc...
if ( fprintf(stream, s.mb_str()) == -1 )
return -1;
}
return rc;
}
int vwprintf(const wchar_t *format, va_list argptr)
{
return wxVfprintf(stdout, format, argptr);
}
#endif // wxNEED_WPRINTF
#ifdef wxNEED_PRINTF_CONVERSION
// ----------------------------------------------------------------------------
// wxFormatConverter: class doing the "%s" -> "%ls" conversion
// ----------------------------------------------------------------------------
/*
Here are the gory details. We want to follow the Windows/MS conventions,
that is to have
In ANSI mode:
format specifier results in
-----------------------------------
%c, %hc, %hC char
%lc, %C, %lC wchar_t
In Unicode mode:
format specifier results in
-----------------------------------
%hc, %C, %hC char
%c, %lc, %lC wchar_t
while on POSIX systems we have %C identical to %lc and %c always means char
(in any mode) while %lc always means wchar_t,
So to use native functions in order to get our semantics we must do the
following translations in Unicode mode (nothing to do in ANSI mode):
wxWindows specifier POSIX specifier
----------------------------------------
%hc, %C, %hC %c
%c %lc
And, of course, the same should be done for %s as well.
*/
class wxFormatConverter
{
public:
wxFormatConverter(const wxChar *format);
// notice that we only translated the string if m_fmtOrig == NULL (as set
// by CopyAllBefore()), otherwise we should simply use the original format
operator const wxChar *() const
{ return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
private:
// copy another character to the translated format: this function does the
// copy if we are translating but doesn't do anything at all if we don't,
// so we don't create the translated format string at all unless we really
// need to (i.e. InsertFmtChar() is called)
wxChar CopyFmtChar(wxChar ch)
{
if ( !m_fmtOrig )
{
// we're translating, do copy
m_fmt += ch;
}
else
{
// simply increase the count which should be copied by
// CopyAllBefore() later if needed
m_nCopied++;
}
return ch;
}
// insert an extra character
void InsertFmtChar(wxChar ch)
{
if ( m_fmtOrig )
{
// so far we haven't translated anything yet
CopyAllBefore();
}
m_fmt += ch;
}
void CopyAllBefore()
{
wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
m_fmt = wxString(m_fmtOrig, m_nCopied);
// we won't need it any longer
m_fmtOrig = NULL;
}
static bool IsFlagChar(wxChar ch)
{
return ch == _T('-') || ch == _T('+') ||
ch == _T('0') || ch == _T(' ') || ch == _T('#');
}
void SkipDigits(const wxChar **ppc)
{
while ( **ppc >= _T('0') && **ppc <= _T('9') )
CopyFmtChar(*(*ppc)++);
}
// the translated format
wxString m_fmt;
// the original format
const wxChar *m_fmtOrig;
// the number of characters already copied
size_t m_nCopied;
};
wxFormatConverter::wxFormatConverter(const wxChar *format)
{
m_fmtOrig = format;
m_nCopied = 0;
while ( *format )
{
if ( CopyFmtChar(*format++) == _T('%') )
{
// skip any flags
while ( IsFlagChar(*format) )
CopyFmtChar(*format++);
// and possible width
if ( *format == _T('*') )
CopyFmtChar(*format++);
else
SkipDigits(&format);
// precision?
if ( *format == _T('.') )
{
SkipDigits(&format);
}
// next we can have a size modifier
enum
{
Default,
Short,
Long
} size;
switch ( *format )
{
case _T('h'):
size = Short;
format++;
break;
case _T('l'):
// "ll" has a different meaning!
if ( format[1] != _T('l') )
{
size = Long;
format++;
break;
}
//else: fall through
default:
size = Default;
}
// and finally we should have the type
switch ( *format )
{
case _T('C'):
case _T('S'):
// %C and %hC -> %c and %lC -> %lc
if ( size == Long )
CopyFmtChar(_T('l'));
InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
break;
case _T('c'):
case _T('s'):
// %c -> %lc but %hc stays %hc and %lc is still %lc
switch ( size )
{
case Default:
InsertFmtChar(_T('l'));
break;
case Short:
CopyFmtChar(_T('h'));
break;
case Long:
;
}
// fall through
default:
// nothing special to do
CopyFmtChar(*format++);
}
}
}
}
#else // !wxNEED_PRINTF_CONVERSION
// no conversion necessary
#define wxFormatConverter(x) (x)
#endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
// ----------------------------------------------------------------------------
// wxPrintf(), wxScanf() and relatives
// ----------------------------------------------------------------------------
#if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
int wxScanf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_2
{
va_list argptr;
va_start(argptr, format);
int ret = vwscanf(wxFormatConverter(format), argptr );
va_end(argptr);
return ret;
}
int wxSscanf( const wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
{
va_list argptr;
va_start(argptr, format);
int ret = vswscanf( str, wxFormatConverter(format), argptr );
va_end(argptr);
return ret;
}
int wxFscanf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
{
va_list argptr;
va_start(argptr, format);
int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
va_end(argptr);
return ret;
}
int wxPrintf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_2
{
va_list argptr;
va_start(argptr, format);
int ret = vwprintf( wxFormatConverter(format), argptr );
va_end(argptr);
return ret;
}
#ifndef wxSnprintf
int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... ) ATTRIBUTE_PRINTF_4
{
va_list argptr;
va_start(argptr, format);
int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
va_end(argptr);
return ret;
}
#endif // wxSnprintf
int wxSprintf( wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
{
va_list argptr;
va_start(argptr, format);
// callers of wxSprintf() deserve what they get
int ret = vswprintf( str, UINT_MAX, wxFormatConverter(format), argptr );
va_end(argptr);
return ret;
}
int wxFprintf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
{
va_list argptr;
va_start( argptr, format );
int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
va_end(argptr);
return ret;
}
int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
{
return vswscanf( str, wxFormatConverter(format), argptr );
}
int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
{
return vfwprintf( stream, wxFormatConverter(format), argptr );
}
int wxVprintf( const wxChar *format, va_list argptr )
{
return vwprintf( wxFormatConverter(format), argptr );
}
#ifndef wxVsnprintf
int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
{
return vswprintf( str, size, wxFormatConverter(format), argptr );
}
#endif // wxVsnprintf
int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
{
// same as for wxSprintf()
return vswprintf(str, UINT_MAX, wxFormatConverter(format), argptr);
}
#endif // wxNEED_PRINTF_CONVERSION
// ----------------------------------------------------------------------------
// ctype.h stuff (currently unused)
// ----------------------------------------------------------------------------
#if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
inline WORD wxMSW_ctype(wxChar ch)
{
WORD ret;
GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
return ret;
}
WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
#endif
#ifndef wxStrdup
WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
{
size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
wxChar *ret = (wxChar *) malloc(size);
memcpy(ret, psz, size);
return ret;
}
#endif
#ifndef wxStricmp
int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
{
register wxChar c1, c2;
do {
c1 = wxTolower(*psz1++);
c2 = wxTolower(*psz2++);
} while ( c1 && (c1 == c2) );
return c1 - c2;
}
#endif
#ifndef wxStricmp
int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
{
register wxChar c1, c2;
while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
if (n) {
if (c1 < c2) return -1;
if (c1 > c2) return 1;
}
return 0;
}
#endif
#ifndef wxStrtok
WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
{
if (!psz)
{
psz = *save_ptr;
if ( !psz )
return NULL;
}
psz += wxStrspn(psz, delim);
if (!*psz)
{
*save_ptr = (wxChar *)NULL;
return (wxChar *)NULL;
}
wxChar *ret = psz;
psz = wxStrpbrk(psz, delim);
if (!psz)
{
*save_ptr = (wxChar*)NULL;
}
else
{
*psz = wxT('\0');
*save_ptr = psz + 1;
}
return ret;
}
#endif // wxStrtok
#ifndef wxSetlocale
WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
{
char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
}
#endif
// ----------------------------------------------------------------------------
// string.h functions
// ----------------------------------------------------------------------------
#ifdef wxNEED_WX_STRING_H
WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
{
wxChar *ret = dest;
while (*dest) dest++;
while ((*dest++ = *src++));
return ret;
}
WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
{
// be careful here as the terminating NUL makes part of the string
while ( *s != c )
{
if ( !*s++ )
return NULL;
}
return s;
}
WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
{
while ((*s1 == *s2) && *s1) s1++, s2++;
if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
return 0;
}
WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
{
wxChar *ret = dest;
while ((*dest++ = *src++));
return ret;
}
WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
{
wxChar *ret = dest;
while (*dest) dest++;
while (n && (*dest++ = *src++)) n--;
return ret;
}
WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
{
while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
if (n) {
if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
}
return 0;
}
WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
{
wxChar *ret = dest;
while (n && (*dest++ = *src++)) n--;
while (n) *dest++=0, n--; // the docs specify padding with zeroes
return ret;
}
WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
{
while (*s && !wxStrchr(accept, *s))
s++;
return *s ? s : NULL;
}
WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
{
const wxChar *ret = NULL;
do
{
if ( *s == c )
ret = s;
s++;
}
while ( *s );
return ret;
}
WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
{
size_t len = 0;
while (wxStrchr(accept, *s++)) len++;
return len;
}
WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
{
wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
// VZ: this is not exactly the most efficient string search algorithm...
const size_t len = wxStrlen(needle);
while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
{
if ( !wxStrncmp(fnd, needle, len) )
return fnd;
haystack = fnd + 1;
}
return NULL;
}
WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
{
const wxChar *start = nptr;
// FIXME: only correct for C locale
while (wxIsspace(*nptr)) nptr++;
if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
while (wxIsdigit(*nptr)) nptr++;
if (*nptr == wxT('.')) {
nptr++;
while (wxIsdigit(*nptr)) nptr++;
}
if (*nptr == wxT('E') || *nptr == wxT('e')) {
nptr++;
if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
while (wxIsdigit(*nptr)) nptr++;
}
wxString data(nptr, nptr-start);
wxWX2MBbuf dat = data.mb_str(wxConvLocal);
char *rdat = wxMBSTRINGCAST dat;
double ret = strtod(dat, &rdat);
if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
return ret;
}
WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
{
const wxChar *start = nptr;
// FIXME: only correct for C locale
while (wxIsspace(*nptr)) nptr++;
if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
if (((base == 0) || (base == 16)) &&
(nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
nptr += 2;
base = 16;
}
else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
else if (base == 0) base = 10;
while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
(wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
wxString data(nptr, nptr-start);
wxWX2MBbuf dat = data.mb_str(wxConvLocal);
char *rdat = wxMBSTRINGCAST dat;
long int ret = strtol(dat, &rdat, base);
if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
return ret;
}
#endif // wxNEED_WX_STRING_H
#ifdef wxNEED_WX_STDIO_H
WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
{
char mode_buffer[10];
for (size_t i = 0; i < wxStrlen(mode)+1; i++)
mode_buffer[i] = (char) mode[i];
return fopen( wxConvFile.cWX2MB(path), mode_buffer );
}
WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
{
char mode_buffer[10];
for (size_t i = 0; i < wxStrlen(mode)+1; i++)
mode_buffer[i] = (char) mode[i];
return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
}
WXDLLEXPORT int wxRemove(const wxChar *path)
{
return remove( wxConvFile.cWX2MB(path) );
}
WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
{
return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
}
#endif
#ifndef wxAtof
double WXDLLEXPORT wxAtof(const wxChar *psz)
{
return atof(wxConvLocal.cWX2MB(psz));
}
#endif
#ifdef wxNEED_WX_STDLIB_H
int WXDLLEXPORT wxAtoi(const wxChar *psz)
{
return atoi(wxConvLocal.cWX2MB(psz));
}
long WXDLLEXPORT wxAtol(const wxChar *psz)
{
return atol(wxConvLocal.cWX2MB(psz));
}
wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
{
static wxHashTable env;
// check if we already have stored the converted env var
wxObject *data = env.Get(name);
if (!data)
{
// nope, retrieve it,
#if wxUSE_UNICODE
wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
// printf( "buffer %s\n", (const char*) buffer );
const char *val = getenv( (const char *)buffer );
#else
const char *val = getenv( name );
#endif
if (!val) return (wxChar *)NULL;
// printf( "home %s\n", val );
// convert it,
#ifdef wxUSE_UNICODE
data = (wxObject *)new wxString(val, wxConvLocal);
#else
data = (wxObject *)new wxString(val);
#endif
// and store it
env.Put(name, data);
}
// return converted env var
return (wxChar *)((wxString *)data)->c_str();
}
int WXDLLEXPORT wxSystem(const wxChar *psz)
{
return system(wxConvLocal.cWX2MB(psz));
}
#endif
#ifdef wxNEED_WX_TIME_H
WXDLLEXPORT size_t wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
{
if (!max) return 0;
char *buf = (char *)malloc(max);
size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
if (ret)
{
wxStrcpy(s, wxConvLocal.cMB2WX(buf));
free(buf);
return wxStrlen(s);
}
else
{
free(buf);
*s = 0;
return 0;
}
}
#endif