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small rewrite by me, pass wine test and no bugs in ungetc accroing wine test of msvcrt.

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svn path=/trunk/; revision=22143
This commit is contained in:
Magnus Olsen 2006-06-01 09:26:32 +00:00
parent 2ac0c98f88
commit fe3478c70d
1 changed files with 10 additions and 23 deletions
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33
reactos/lib/crt/stdio/ungetc.c
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@ -18,33 +18,20 @@ _TINT _ungettc(_TINT c, FILE *f)
if (c == _TEOF)
return _TEOF;
if (f->_ptr == NULL || f->_base == NULL)
return _TEOF;
if (f->_ptr == f->_base)
{
{
if (f->_cnt == 0)
f->_ptr+=sizeof(_TCHAR);
else
return _TEOF;
}
f->_cnt+=sizeof(_TCHAR);
f->_ptr-=sizeof(_TCHAR);
#if 1
if (*((_TCHAR*)(f->_ptr)) != c)
{
f->_flag |= _IOUNGETC;
*((_TCHAR*)(f->_ptr)) = c;
}
#else
/* This is the old unicode version. Dunno what version is most correct. -Gunnar */
f->_flag |= _IOUNGETC;
*((_TCHAR*)(f->_ptr)) = c;
#endif
return c;
}
fseek(f, -1, SEEK_CUR);
if(*(_TCHAR*)f->_ptr != c)
*((_TCHAR*)(f->_ptr)) = c;
return c;
}