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Create a branch for header work.
svn path=/branches/header-work/; revision=45691
This commit is contained in:
Timo Kreuzer
parent
14fe274b1c
commit
9ea495ba33
19538 changed files with 0 additions and 1063950 deletions
543
lib/sdk/crt/string/scanf.h
Normal file
543
lib/sdk/crt/string/scanf.h
Normal file
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@ -0,0 +1,543 @@
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/*
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* general implementation of scanf used by scanf, sscanf, fscanf,
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* _cscanf, wscanf, swscanf and fwscanf
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*
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* Copyright 1996,1998 Marcus Meissner
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* Copyright 1996 Jukka Iivonen
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* Copyright 1997,2000, 2003 Uwe Bonnes
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* Copyright 2000 Jon Griffiths
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* Copyright 2002 Daniel Gudbjartsson
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifdef WIDE_SCANF
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#define _CHAR_ wchar_t
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#define _EOF_ WEOF
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#define _EOF_RET WEOF
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#define _ISSPACE_(c) iswspace(c)
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#define _ISDIGIT_(c) iswdigit(c)
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#define _WIDE2SUPPORTED_(c) c /* No conversion needed (wide to wide) */
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#define _CHAR2SUPPORTED_(c) c /* FIXME: convert char to wide char */
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#define _CHAR2DIGIT_(c, base) wchar2digit((c), (base))
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#define _BITMAPSIZE_ 256*256
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#else /* WIDE_SCANF */
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#define _CHAR_ char
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#define _EOF_ EOF
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#define _EOF_RET EOF
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#define _ISSPACE_(c) isspace(c)
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#define _ISDIGIT_(c) isdigit(c)
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#define _WIDE2SUPPORTED_(c) c /* FIXME: convert wide char to char */
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#define _CHAR2SUPPORTED_(c) c /* No conversion needed (char to char) */
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#define _CHAR2DIGIT_(c, base) char2digit((c), (base))
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#define _BITMAPSIZE_ 256
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#endif /* WIDE_SCANF */
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#ifdef CONSOLE
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#define _GETC_(file) (consumed++, _getch())
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#define _UNGETC_(nch, file) do { _ungetch(nch); consumed--; } while(0)
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#define _FUNCTION_ int vcscanf(const char *format, va_list ap)
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#else
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#ifdef STRING
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#undef _EOF_
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#define _EOF_ 0
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#define _GETC_(file) (consumed++, *file++)
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#define _UNGETC_(nch, file) do { file--; consumed--; } while(0)
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#ifdef WIDE_SCANF
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#define _FUNCTION_ int vswscanf(const wchar_t *file, const wchar_t *format, va_list ap)
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#else /* WIDE_SCANF */
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#define _FUNCTION_ int vsscanf(const char *file, const char *format, va_list ap)
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#endif /* WIDE_SCANF */
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#else /* STRING */
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#ifdef WIDE_SCANF
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#define _GETC_(file) (consumed++, fgetwc(file))
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#define _UNGETC_(nch, file) do { ungetwc(nch, file); consumed--; } while(0)
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#define _FUNCTION_ int vfwscanf(FILE* file, const wchar_t *format, va_list ap)
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#else /* WIDE_SCANF */
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#define _GETC_(file) (consumed++, fgetc(file))
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#define _UNGETC_(nch, file) do { ungetc(nch, file); consumed--; } while(0)
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#define _FUNCTION_ int vfscanf(FILE* file, const char *format, va_list ap)
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#endif /* WIDE_SCANF */
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#endif /* STRING */
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#endif /* CONSOLE */
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_FUNCTION_ {
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int rd = 0, consumed = 0;
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int nch;
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if (!*format) return 0;
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#ifndef WIDE_SCANF
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#ifdef CONSOLE
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TRACE("(%s):\n", debugstr_a(format));
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#else /* CONSOLE */
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#ifdef STRING
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TRACE("%s (%s)\n", file, debugstr_a(format));
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#else /* STRING */
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TRACE("%p (%s)\n", file, debugstr_a(format));
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#endif /* STRING */
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#endif /* CONSOLE */
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#endif /* WIDE_SCANF */
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nch = _GETC_(file);
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if (nch == _EOF_) return _EOF_RET;
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while (*format) {
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/* a whitespace character in the format string causes scanf to read,
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* but not store, all consecutive white-space characters in the input
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* up to the next non-white-space character. One white space character
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* in the input matches any number (including zero) and combination of
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* white-space characters in the input. */
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if (_ISSPACE_(*format)) {
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/* skip whitespace */
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while ((nch!=_EOF_) && _ISSPACE_(nch))
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nch = _GETC_(file);
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}
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/* a format specification causes scanf to read and convert characters
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* in the input into values of a specified type. The value is assigned
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* to an argument in the argument list. Format specifications have
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* the form %[*][width][{h | l | I64 | L}]type */
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else if (*format == '%') {
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int st = 0; int suppress = 0; int width = 0;
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int base;
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int h_prefix = 0;
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int l_prefix = 0;
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int L_prefix = 0;
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int w_prefix = 0;
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int prefix_finished = 0;
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int I64_prefix = 0;
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format++;
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/* look for leading asterisk, which means 'suppress assignment of
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* this field'. */
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if (*format=='*') {
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format++;
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suppress=1;
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}
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/* look for width specification */
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while (_ISDIGIT_(*format)) {
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width*=10;
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width+=*format++ - '0';
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}
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if (width==0) width=-1; /* no width spec seen */
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/* read prefix (if any) */
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while (!prefix_finished) {
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switch(*format) {
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case 'h': h_prefix = 1; break;
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case 'l': l_prefix = 1; break;
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case 'w': w_prefix = 1; break;
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case 'L': L_prefix = 1; break;
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case 'I':
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if (*(format + 1) == '6' &&
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*(format + 2) == '4') {
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I64_prefix = 1;
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format += 2;
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}
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break;
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default:
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prefix_finished = 1;
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}
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if (!prefix_finished) format++;
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}
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/* read type */
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switch(*format) {
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case 'p':
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case 'P': /* pointer. */
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if (sizeof(void *) == sizeof(LONGLONG)) I64_prefix = 1;
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/* fall through */
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case 'x':
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case 'X': /* hexadecimal integer. */
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base = 16;
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goto number;
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case 'o': /* octal integer */
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base = 8;
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goto number;
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case 'u': /* unsigned decimal integer */
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base = 10;
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goto number;
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case 'd': /* signed decimal integer */
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base = 10;
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goto number;
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case 'i': /* generic integer */
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base = 0;
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number: {
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/* read an integer */
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ULONGLONG cur = 0;
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int negative = 0;
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int seendigit=0;
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/* skip initial whitespace */
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while ((nch!=_EOF_) && _ISSPACE_(nch))
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nch = _GETC_(file);
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/* get sign */
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if (nch == '-' || nch == '+') {
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negative = (nch=='-');
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nch = _GETC_(file);
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if (width>0) width--;
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}
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/* look for leading indication of base */
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if (width!=0 && nch == '0' && *format != 'p' && *format != 'P') {
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nch = _GETC_(file);
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if (width>0) width--;
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seendigit=1;
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if (width!=0 && (nch=='x' || nch=='X')) {
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if (base==0)
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base=16;
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if (base==16) {
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nch = _GETC_(file);
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if (width>0) width--;
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seendigit=0;
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}
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} else if (base==0)
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base = 8;
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}
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/* format %i without indication of base */
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if (base==0)
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base = 10;
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/* throw away leading zeros */
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while (width!=0 && nch=='0') {
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nch = _GETC_(file);
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if (width>0) width--;
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seendigit=1;
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}
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if (width!=0 && _CHAR2DIGIT_(nch, base)!=-1) {
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cur = _CHAR2DIGIT_(nch, base);
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nch = _GETC_(file);
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if (width>0) width--;
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seendigit=1;
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}
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/* read until no more digits */
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while (width!=0 && (nch!=_EOF_) && _CHAR2DIGIT_(nch, base)!=-1) {
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cur = cur*base + _CHAR2DIGIT_(nch, base);
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nch = _GETC_(file);
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if (width>0) width--;
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seendigit=1;
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}
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/* okay, done! */
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if (!seendigit) break; /* not a valid number */
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st = 1;
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if (!suppress) {
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#define _SET_NUMBER_(type) *va_arg(ap, type*) = negative ? -cur : cur
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if (I64_prefix) _SET_NUMBER_(LONGLONG);
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else if (l_prefix) _SET_NUMBER_(LONG);
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else if (h_prefix) _SET_NUMBER_(short int);
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else _SET_NUMBER_(int);
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}
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}
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break;
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case 'e':
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case 'E':
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case 'f':
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case 'g':
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case 'G': { /* read a float */
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long double cur = 0;
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int negative = 0;
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/* skip initial whitespace */
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while ((nch!=_EOF_) && _ISSPACE_(nch))
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nch = _GETC_(file);
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/* get sign. */
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if (nch == '-' || nch == '+') {
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negative = (nch=='-');
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if (width>0) width--;
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if (width==0) break;
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nch = _GETC_(file);
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}
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/* get first digit. */
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if ('.' != nch) {
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if (!_ISDIGIT_(nch)) break;
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cur = (nch - '0');
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nch = _GETC_(file);
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if (width>0) width--;
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/* read until no more digits */
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while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
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cur = cur*10 + (nch - '0');
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nch = _GETC_(file);
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if (width>0) width--;
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}
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} else {
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cur = 0; /* MaxPayneDemo Fix: .8 -> 0.8 */
|
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}
|
||||
/* handle decimals */
|
||||
if (width!=0 && nch == '.') {
|
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long double dec = 1;
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nch = _GETC_(file);
|
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if (width>0) width--;
|
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while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
|
||||
dec /= 10;
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||||
cur += dec * (nch - '0');
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||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
}
|
||||
}
|
||||
/* handle exponent */
|
||||
if (width!=0 && (nch == 'e' || nch == 'E')) {
|
||||
int exponent = 0, negexp = 0;
|
||||
float expcnt;
|
||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
/* possible sign on the exponent */
|
||||
if (width!=0 && (nch=='+' || nch=='-')) {
|
||||
negexp = (nch=='-');
|
||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
}
|
||||
/* exponent digits */
|
||||
while (width!=0 && (nch!=_EOF_) && _ISDIGIT_(nch)) {
|
||||
exponent *= 10;
|
||||
exponent += (nch - '0');
|
||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
}
|
||||
/* update 'cur' with this exponent. */
|
||||
expcnt = negexp ? .1 : 10;
|
||||
while (exponent!=0) {
|
||||
if (exponent&1)
|
||||
cur*=expcnt;
|
||||
exponent/=2;
|
||||
expcnt=expcnt*expcnt;
|
||||
}
|
||||
}
|
||||
st = 1;
|
||||
if (!suppress) {
|
||||
if (L_prefix) _SET_NUMBER_(long double);
|
||||
else if (l_prefix) _SET_NUMBER_(double);
|
||||
else _SET_NUMBER_(float);
|
||||
}
|
||||
}
|
||||
break;
|
||||
/* According to msdn,
|
||||
* 's' reads a character string in a call to fscanf
|
||||
* and 'S' a wide character string and vice versa in a
|
||||
* call to fwscanf. The 'h', 'w' and 'l' prefixes override
|
||||
* this behaviour. 'h' forces reading char * but 'l' and 'w'
|
||||
* force reading WCHAR. */
|
||||
case 's':
|
||||
if (w_prefix || l_prefix) goto widecharstring;
|
||||
else if (h_prefix) goto charstring;
|
||||
#ifdef WIDE_SCANF
|
||||
else goto widecharstring;
|
||||
#else /* WIDE_SCANF */
|
||||
else goto charstring;
|
||||
#endif /* WIDE_SCANF */
|
||||
case 'S':
|
||||
if (w_prefix || l_prefix) goto widecharstring;
|
||||
else if (h_prefix) goto charstring;
|
||||
#ifdef WIDE_SCANF
|
||||
else goto charstring;
|
||||
#else /* WIDE_SCANF */
|
||||
else goto widecharstring;
|
||||
#endif /* WIDE_SCANF */
|
||||
charstring: { /* read a word into a char */
|
||||
char *sptr = suppress ? NULL : va_arg(ap, char*);
|
||||
/* skip initial whitespace */
|
||||
while ((nch!=_EOF_) && _ISSPACE_(nch))
|
||||
nch = _GETC_(file);
|
||||
/* read until whitespace */
|
||||
while (width!=0 && (nch!=_EOF_) && !_ISSPACE_(nch)) {
|
||||
if (!suppress) *sptr++ = _CHAR2SUPPORTED_(nch);
|
||||
st++;
|
||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
}
|
||||
/* terminate */
|
||||
if (!suppress) *sptr = 0;
|
||||
}
|
||||
break;
|
||||
widecharstring: { /* read a word into a wchar_t* */
|
||||
wchar_t *sptr = suppress ? NULL : va_arg(ap, wchar_t*);
|
||||
/* skip initial whitespace */
|
||||
while ((nch!=_EOF_) && _ISSPACE_(nch))
|
||||
nch = _GETC_(file);
|
||||
/* read until whitespace */
|
||||
while (width!=0 && (nch!=_EOF_) && !_ISSPACE_(nch)) {
|
||||
if (!suppress) *sptr++ = _WIDE2SUPPORTED_(nch);
|
||||
st++;
|
||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
}
|
||||
/* terminate */
|
||||
if (!suppress) *sptr = 0;
|
||||
}
|
||||
break;
|
||||
/* 'c' and 'C work analogously to 's' and 'S' as described
|
||||
* above */
|
||||
case 'c':
|
||||
if (w_prefix || l_prefix) goto widecharacter;
|
||||
else if (h_prefix) goto character;
|
||||
#ifdef WIDE_SCANF
|
||||
else goto widecharacter;
|
||||
#else /* WIDE_SCANF */
|
||||
else goto character;
|
||||
#endif /* WIDE_SCANF */
|
||||
case 'C':
|
||||
if (w_prefix || l_prefix) goto widecharacter;
|
||||
else if (h_prefix) goto character;
|
||||
#ifdef WIDE_SCANF
|
||||
else goto character;
|
||||
#else /* WIDE_SCANF */
|
||||
else goto widecharacter;
|
||||
#endif /* WIDE_SCANF */
|
||||
character: { /* read single character into char */
|
||||
char *str = suppress ? NULL : va_arg(ap, char*);
|
||||
if (width == -1) width = 1;
|
||||
while ((width != 0) && (nch != _EOF_))
|
||||
{
|
||||
if (!suppress) *str++ = _CHAR2SUPPORTED_(nch);
|
||||
st++;
|
||||
width--;
|
||||
nch = _GETC_(file);
|
||||
}
|
||||
}
|
||||
break;
|
||||
widecharacter: { /* read single character into a wchar_t */
|
||||
wchar_t *str = suppress ? NULL : va_arg(ap, wchar_t*);
|
||||
if (width == -1) width = 1;
|
||||
while ((width != 0) && (nch != _EOF_))
|
||||
{
|
||||
if (!suppress) *str++ = _WIDE2SUPPORTED_(nch);
|
||||
st++;
|
||||
width--;
|
||||
nch = _GETC_(file);
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 'n': {
|
||||
if (!suppress) {
|
||||
int*n = va_arg(ap, int*);
|
||||
*n = consumed - 1;
|
||||
}
|
||||
/* This is an odd one: according to the standard,
|
||||
* "Execution of a %n directive does not increment the
|
||||
* assignment count returned at the completion of
|
||||
* execution" even if it wasn't suppressed with the
|
||||
* '*' flag. The Corrigendum to the standard seems
|
||||
* to contradict this (comment out the assignment to
|
||||
* suppress below if you want to implement these
|
||||
* alternate semantics) but the windows program I'm
|
||||
* looking at expects the behavior I've coded here
|
||||
* (which happens to be what glibc does as well).
|
||||
*/
|
||||
suppress = 1;
|
||||
st = 1;
|
||||
}
|
||||
break;
|
||||
case '[': {
|
||||
_CHAR_ *str = suppress ? NULL : va_arg(ap, _CHAR_*);
|
||||
_CHAR_ *sptr = str;
|
||||
RTL_BITMAP bitMask;
|
||||
ULONG *Mask;
|
||||
int invert = 0; /* Set if we are NOT to find the chars */
|
||||
|
||||
/* Init our bitmap */
|
||||
#ifdef _LIBCNT_
|
||||
Mask = RtlAllocateHeap(RtlGetProcessHeap(), HEAP_ZERO_MEMORY, _BITMAPSIZE_/8);
|
||||
#else
|
||||
Mask = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, _BITMAPSIZE_/8);
|
||||
#endif
|
||||
RtlInitializeBitMap(&bitMask, Mask, _BITMAPSIZE_);
|
||||
|
||||
/* Read the format */
|
||||
format++;
|
||||
if(*format == '^') {
|
||||
invert = 1;
|
||||
format++;
|
||||
}
|
||||
if(*format == ']') {
|
||||
RtlSetBits(&bitMask, ']', 1);
|
||||
format++;
|
||||
}
|
||||
while(*format && (*format != ']')) {
|
||||
/* According to msdn:
|
||||
* "Note that %[a-z] and %[z-a] are interpreted as equivalent to %[abcde...z]." */
|
||||
if((*format == '-') && (*(format + 1) != ']')) {
|
||||
if ((*(format - 1)) < *(format + 1))
|
||||
RtlSetBits(&bitMask, *(format - 1) +1 , *(format + 1) - *(format - 1));
|
||||
else
|
||||
RtlSetBits(&bitMask, *(format + 1) , *(format - 1) - *(format + 1));
|
||||
format++;
|
||||
} else
|
||||
RtlSetBits(&bitMask, *format, 1);
|
||||
format++;
|
||||
}
|
||||
/* read until char is not suitable */
|
||||
while ((width != 0) && (nch != _EOF_)) {
|
||||
if(!invert) {
|
||||
if(RtlAreBitsSet(&bitMask, nch, 1)) {
|
||||
if (!suppress) *sptr++ = _CHAR2SUPPORTED_(nch);
|
||||
} else
|
||||
break;
|
||||
} else {
|
||||
if(RtlAreBitsClear(&bitMask, nch, 1)) {
|
||||
if (!suppress) *sptr++ = _CHAR2SUPPORTED_(nch);
|
||||
} else
|
||||
break;
|
||||
}
|
||||
st++;
|
||||
nch = _GETC_(file);
|
||||
if (width>0) width--;
|
||||
}
|
||||
/* terminate */
|
||||
if (!suppress) *sptr = 0;
|
||||
#ifdef _LIBCNT_
|
||||
RtlFreeHeap(RtlGetProcessHeap(), 0, Mask);
|
||||
#else
|
||||
HeapFree(GetProcessHeap(), 0, Mask);
|
||||
#endif
|
||||
}
|
||||
break;
|
||||
default:
|
||||
/* From spec: "if a percent sign is followed by a character
|
||||
* that has no meaning as a format-control character, that
|
||||
* character and the following characters are treated as
|
||||
* an ordinary sequence of characters, that is, a sequence
|
||||
* of characters that must match the input. For example,
|
||||
* to specify that a percent-sign character is to be input,
|
||||
* use %%." */
|
||||
while ((nch!=_EOF_) && _ISSPACE_(nch))
|
||||
nch = _GETC_(file);
|
||||
if (nch==*format) {
|
||||
suppress = 1; /* whoops no field to be read */
|
||||
st = 1; /* but we got what we expected */
|
||||
nch = _GETC_(file);
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (st && !suppress) rd++;
|
||||
else if (!st) break;
|
||||
}
|
||||
/* a non-white-space character causes scanf to read, but not store,
|
||||
* a matching non-white-space character. */
|
||||
else {
|
||||
/* check for character match */
|
||||
if (nch == *format) {
|
||||
nch = _GETC_(file);
|
||||
} else break;
|
||||
}
|
||||
format++;
|
||||
}
|
||||
if (nch!=_EOF_) {
|
||||
_UNGETC_(nch, file);
|
||||
}
|
||||
TRACE("returning %d\n", rd);
|
||||
return rd;
|
||||
}
|
||||
|
||||
#undef _CHAR_
|
||||
#undef _EOF_
|
||||
#undef _EOF_RET
|
||||
#undef _ISSPACE_
|
||||
#undef _ISDIGIT_
|
||||
#undef _CHAR2SUPPORTED_
|
||||
#undef _WIDE2SUPPORTED_
|
||||
#undef _CHAR2DIGIT_
|
||||
#undef _GETC_
|
||||
#undef _UNGETC_
|
||||
#undef _FUNCTION_
|
||||
#undef _BITMAPSIZE_
|
||||
Loading…
Add table
Add a link
Reference in a new issue