| /* |
| FUNCTION |
| <<vscanf>>, <<vfscanf>>, <<vsscanf>>---format argument list |
| |
| INDEX |
| vscanf |
| INDEX |
| vfscanf |
| INDEX |
| vsscanf |
| |
| ANSI_SYNOPSIS |
| #include <stdio.h> |
| #include <stdarg.h> |
| int vscanf(const char *<[fmt]>, va_list <[list]>); |
| int vfscanf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); |
| int vsscanf(const char *<[str]>, const char *<[fmt]>, va_list <[list]>); |
| |
| int _vscanf_r(void *<[reent]>, const char *<[fmt]>, |
| va_list <[list]>); |
| int _vfscanf_r(void *<[reent]>, FILE *<[fp]>, const char *<[fmt]>, |
| va_list <[list]>); |
| int _vsscanf_r(void *<[reent]>, const char *<[str]>, const char *<[fmt]>, |
| va_list <[list]>); |
| |
| TRAD_SYNOPSIS |
| #include <stdio.h> |
| #include <varargs.h> |
| int vscanf( <[fmt]>, <[ist]>) |
| char *<[fmt]>; |
| va_list <[list]>; |
| |
| int vfscanf( <[fp]>, <[fmt]>, <[list]>) |
| FILE *<[fp]>; |
| char *<[fmt]>; |
| va_list <[list]>; |
| |
| int vsscanf( <[str]>, <[fmt]>, <[list]>) |
| char *<[str]>; |
| char *<[fmt]>; |
| va_list <[list]>; |
| |
| int _vscanf_r( <[reent]>, <[fmt]>, <[ist]>) |
| char *<[reent]>; |
| char *<[fmt]>; |
| va_list <[list]>; |
| |
| int _vfscanf_r( <[reent]>, <[fp]>, <[fmt]>, <[list]>) |
| char *<[reent]>; |
| FILE *<[fp]>; |
| char *<[fmt]>; |
| va_list <[list]>; |
| |
| int _vsscanf_r( <[reent]>, <[str]>, <[fmt]>, <[list]>) |
| char *<[reent]>; |
| char *<[str]>; |
| char *<[fmt]>; |
| va_list <[list]>; |
| |
| DESCRIPTION |
| <<vscanf>>, <<vfscanf>>, and <<vsscanf>> are (respectively) variants |
| of <<scanf>>, <<fscanf>>, and <<sscanf>>. They differ only in |
| allowing their caller to pass the variable argument list as a |
| <<va_list>> object (initialized by <<va_start>>) rather than |
| directly accepting a variable number of arguments. |
| |
| RETURNS |
| The return values are consistent with the corresponding functions: |
| <<vscanf>> returns the number of input fields successfully scanned, |
| converted, and stored; the return value does not include scanned |
| fields which were not stored. |
| |
| If <<vscanf>> attempts to read at end-of-file, the return value |
| is <<EOF>>. |
| |
| If no fields were stored, the return value is <<0>>. |
| |
| The routines <<_vscanf_r>>, <<_vfscanf_f>>, and <<_vsscanf_r>> are |
| reentrant versions which take an additional first parameter which points to the |
| reentrancy structure. |
| |
| PORTABILITY |
| These are GNU extensions. |
| |
| Supporting OS subroutines required: |
| */ |
| |
| /*- |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms are permitted |
| * provided that the above copyright notice and this paragraph are |
| * duplicated in all such forms and that any documentation, |
| * advertising materials, and other materials related to such |
| * distribution and use acknowledge that the software was developed |
| * by the University of California, Berkeley. The name of the |
| * University may not be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| #include <_ansi.h> |
| #include <reent.h> |
| #include <newlib.h> |
| #include <ctype.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <limits.h> |
| #include <wchar.h> |
| #include <string.h> |
| #ifdef _HAVE_STDC |
| #include <stdarg.h> |
| #else |
| #include <varargs.h> |
| #endif |
| #include "local.h" |
| |
| #ifndef NO_FLOATING_POINT |
| #define FLOATING_POINT |
| #endif |
| |
| #ifdef FLOATING_POINT |
| #include <float.h> |
| |
| /* Currently a test is made to see if long double processing is warranted. |
| This could be changed in the future should the _ldtoa_r code be |
| preferred over _dtoa_r. */ |
| #define _NO_LONGDBL |
| #if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG) |
| #undef _NO_LONGDBL |
| extern _LONG_DOUBLE _strtold _PARAMS((char *s, char **sptr)); |
| #endif |
| |
| #define _NO_LONGLONG |
| #if defined _WANT_IO_LONG_LONG && defined __GNUC__ |
| # undef _NO_LONGLONG |
| #endif |
| |
| #include "floatio.h" |
| #define BUF (MAXEXP+MAXFRACT+3) /* 3 = sign + decimal point + NUL */ |
| /* An upper bound for how long a long prints in decimal. 4 / 13 approximates |
| log (2). Add one char for roundoff compensation and one for the sign. */ |
| #define MAX_LONG_LEN ((CHAR_BIT * sizeof (long) - 1) * 4 / 13 + 2) |
| #else |
| #define BUF 40 |
| #endif |
| |
| /* |
| * Flags used during conversion. |
| */ |
| |
| #define LONG 0x01 /* l: long or double */ |
| #define LONGDBL 0x02 /* L: long double or long long */ |
| #define SHORT 0x04 /* h: short */ |
| #define SUPPRESS 0x10 /* suppress assignment */ |
| #define POINTER 0x20 /* weird %p pointer (`fake hex') */ |
| #define NOSKIP 0x40 /* do not skip blanks */ |
| |
| /* |
| * The following are used in numeric conversions only: |
| * SIGNOK, NDIGITS, DPTOK, and EXPOK are for floating point; |
| * SIGNOK, NDIGITS, PFXOK, and NZDIGITS are for integral. |
| */ |
| |
| #define SIGNOK 0x80 /* +/- is (still) legal */ |
| #define NDIGITS 0x100 /* no digits detected */ |
| |
| #define DPTOK 0x200 /* (float) decimal point is still legal */ |
| #define EXPOK 0x400 /* (float) exponent (e+3, etc) still legal */ |
| |
| #define PFXOK 0x200 /* 0x prefix is (still) legal */ |
| #define NZDIGITS 0x400 /* no zero digits detected */ |
| #define NNZDIGITS 0x800 /* no non-zero digits detected */ |
| |
| #define VECTOR 0x2000 /* v: vector */ |
| #define FIXEDPOINT 0x4000 /* r/R: fixed-point */ |
| #define SIGNED 0x8000 /* r: signed fixed-point */ |
| |
| /* |
| * Conversion types. |
| */ |
| |
| #define CT_CHAR 0 /* %c conversion */ |
| #define CT_CCL 1 /* %[...] conversion */ |
| #define CT_STRING 2 /* %s conversion */ |
| #define CT_INT 3 /* integer, i.e., strtol or strtoul */ |
| #define CT_FLOAT 4 /* floating, i.e., strtod */ |
| |
| #if 0 |
| #define u_char unsigned char |
| #endif |
| #define u_char char |
| #define u_long unsigned long |
| |
| #ifndef _NO_LONGLONG |
| typedef unsigned long long u_long_long; |
| #endif |
| |
| typedef union |
| { |
| char c[16] __attribute__ ((__aligned__ (16))); |
| short h[8]; |
| long l[4]; |
| int i[4]; |
| float f[4]; |
| } vec_union; |
| |
| /* |
| * vfscanf |
| */ |
| |
| #define BufferEmpty (fp->_r <= 0 && __srefill(fp)) |
| |
| #ifndef _REENT_ONLY |
| |
| int |
| _DEFUN (vfscanf, (fp, fmt, ap), |
| register FILE *fp _AND |
| _CONST char *fmt _AND |
| va_list ap) |
| { |
| CHECK_INIT(_REENT, fp); |
| return __svfscanf_r (_REENT, fp, fmt, ap); |
| } |
| |
| int |
| __svfscanf (fp, fmt0, ap) |
| register FILE *fp; |
| char _CONST *fmt0; |
| va_list ap; |
| { |
| return __svfscanf_r (_REENT, fp, fmt0, ap); |
| } |
| |
| #endif /* !_REENT_ONLY */ |
| |
| int |
| _DEFUN (_vfscanf_r, (data, fp, fmt, ap), |
| struct _reent *data _AND |
| register FILE *fp _AND |
| _CONST char *fmt _AND |
| va_list ap) |
| { |
| return __svfscanf_r (data, fp, fmt, ap); |
| } |
| |
| |
| int |
| __svfscanf_r (rptr, fp, fmt0, ap) |
| struct _reent *rptr; |
| register FILE *fp; |
| char _CONST *fmt0; |
| va_list ap; |
| { |
| register u_char *fmt = (u_char *) fmt0; |
| register int c; /* character from format, or conversion */ |
| register int type; /* conversion type */ |
| register size_t width; /* field width, or 0 */ |
| register char *p; /* points into all kinds of strings */ |
| register int n; /* handy integer */ |
| register int flags; /* flags as defined above */ |
| register char *p0; /* saves original value of p when necessary */ |
| int orig_flags; /* saved flags used when processing vector */ |
| int int_width; /* tmp area to store width when processing int */ |
| int nassigned; /* number of fields assigned */ |
| int nread; /* number of characters consumed from fp */ |
| int base = 0; /* base argument to strtol/strtoul */ |
| int nbytes = 1; /* number of bytes read from fmt string */ |
| wchar_t wc; /* wchar to use to read format string */ |
| char vec_sep; /* vector separator char */ |
| char last_space_char; /* last white-space char eaten - needed for vec support */ |
| int vec_read_count; /* number of vector items to read separately */ |
| int looped; /* has vector processing looped */ |
| u_long (*ccfn) () = 0; /* conversion function (strtol/strtoul) */ |
| char ccltab[256]; /* character class table for %[...] */ |
| char buf[BUF]; /* buffer for numeric conversions */ |
| vec_union vec_buf; |
| char *lptr; /* literal pointer */ |
| #ifdef _MB_CAPABLE |
| mbstate_t state; /* value to keep track of multibyte state */ |
| #endif |
| |
| char *ch_dest; |
| short *sp; |
| int *ip; |
| float *flp; |
| _LONG_DOUBLE *ldp; |
| double *dp; |
| long *lp; |
| #ifndef _NO_LONGLONG |
| long long *llp; |
| #else |
| u_long _uquad; |
| #endif |
| |
| /* `basefix' is used to avoid `if' tests in the integer scanner */ |
| static _CONST short basefix[17] = |
| {10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}; |
| |
| nassigned = 0; |
| nread = 0; |
| for (;;) |
| { |
| #ifndef _MB_CAPABLE |
| wc = *fmt; |
| #else |
| memset (&state, '\0', sizeof (state)); |
| nbytes = _mbtowc_r (rptr, &wc, fmt, MB_CUR_MAX, &state); |
| #endif |
| fmt += nbytes; |
| if (wc == 0) |
| return nassigned; |
| if (nbytes == 1 && isspace (wc)) |
| { |
| for (;;) |
| { |
| if (BufferEmpty) |
| return nassigned; |
| if (!isspace (*fp->_p)) |
| break; |
| nread++, fp->_r--, fp->_p++; |
| } |
| continue; |
| } |
| if (wc != '%') |
| goto literal; |
| width = 0; |
| flags = 0; |
| vec_sep = ' '; |
| vec_read_count = 0; |
| looped = 0; |
| |
| /* |
| * switch on the format. continue if done; break once format |
| * type is derived. |
| */ |
| |
| again: |
| c = *fmt++; |
| |
| switch (c) |
| { |
| case '%': |
| literal: |
| lptr = fmt - nbytes; |
| for (n = 0; n < nbytes; ++n) |
| { |
| if (BufferEmpty) |
| goto input_failure; |
| if (*fp->_p != *lptr) |
| goto match_failure; |
| fp->_r--, fp->_p++; |
| nread++; |
| ++lptr; |
| } |
| continue; |
| |
| case '*': |
| flags |= SUPPRESS; |
| goto again; |
| case ',': |
| case ';': |
| case ':': |
| case '_': |
| if (flags == SUPPRESS || flags == 0) |
| vec_sep = c; |
| goto again; |
| case 'l': |
| if (flags & SHORT) |
| continue; /* invalid format, don't process any further */ |
| if (flags & LONG) |
| { |
| flags &= ~LONG; |
| flags &= ~VECTOR; |
| flags |= LONGDBL; |
| } |
| else |
| { |
| flags |= LONG; |
| if (flags & VECTOR) |
| vec_read_count = 4; |
| } |
| goto again; |
| case 'L': |
| flags |= LONGDBL; |
| flags &= ~VECTOR; |
| goto again; |
| case 'h': |
| flags |= SHORT; |
| if (flags & LONG) |
| continue; /* invalid format, don't process any further */ |
| if (flags & VECTOR) |
| vec_read_count = 8; |
| goto again; |
| #ifdef __ALTIVEC__ |
| case 'v': |
| flags |= VECTOR; |
| vec_read_count = (flags & SHORT) ? 8 : ((flags & LONG) ? 4 : 16); |
| goto again; |
| #endif |
| case '0': |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| case '8': |
| case '9': |
| width = width * 10 + c - '0'; |
| goto again; |
| |
| /* |
| * Conversions. Those marked `compat' are for |
| * 4.[123]BSD compatibility. |
| * |
| * (According to ANSI, E and X formats are supposed to |
| * the same as e and x. Sorry about that.) |
| */ |
| |
| case 'D': /* compat */ |
| flags |= LONG; |
| /* FALLTHROUGH */ |
| case 'd': |
| type = CT_INT; |
| ccfn = (u_long (*)())_strtol_r; |
| base = 10; |
| break; |
| |
| case 'i': |
| type = CT_INT; |
| ccfn = (u_long (*)())_strtol_r; |
| base = 0; |
| break; |
| |
| case 'O': /* compat */ |
| flags |= LONG; |
| /* FALLTHROUGH */ |
| case 'o': |
| type = CT_INT; |
| ccfn = _strtoul_r; |
| base = 8; |
| break; |
| |
| case 'u': |
| type = CT_INT; |
| ccfn = _strtoul_r; |
| base = 10; |
| break; |
| |
| case 'X': /* compat XXX */ |
| case 'x': |
| flags |= PFXOK; /* enable 0x prefixing */ |
| type = CT_INT; |
| ccfn = _strtoul_r; |
| base = 16; |
| break; |
| |
| #ifdef FLOATING_POINT |
| case 'E': /* compat XXX */ |
| case 'G': /* compat XXX */ |
| /* ANSI says that E,G and X behave the same way as e,g,x */ |
| /* FALLTHROUGH */ |
| case 'e': |
| case 'f': |
| case 'g': |
| type = CT_FLOAT; |
| if (flags & VECTOR) |
| vec_read_count = 4; |
| break; |
| |
| # ifdef __SPE__ |
| /* treat fixed-point like %f floating point */ |
| case 'r': |
| flags |= SIGNED; |
| /* fallthrough */ |
| case 'R': |
| flags |= FIXEDPOINT; |
| type = CT_FLOAT; |
| break; |
| # endif |
| #endif |
| |
| case 's': |
| flags &= ~VECTOR; |
| type = CT_STRING; |
| break; |
| |
| case '[': |
| fmt = __sccl (ccltab, fmt); |
| flags |= NOSKIP; |
| flags &= ~VECTOR; |
| type = CT_CCL; |
| break; |
| |
| case 'c': |
| flags |= NOSKIP; |
| type = CT_CHAR; |
| if (flags & VECTOR) |
| { |
| /* not allowed to have h or l with c specifier */ |
| if (flags & (LONG | SHORT)) |
| continue; /* invalid format don't process any further */ |
| width = 0; |
| vec_read_count = 16; |
| } |
| break; |
| |
| case 'p': /* pointer format is like hex */ |
| flags |= POINTER | PFXOK; |
| type = CT_INT; |
| ccfn = _strtoul_r; |
| base = 16; |
| break; |
| |
| case 'n': |
| if (flags & SUPPRESS) /* ??? */ |
| continue; |
| flags &= ~VECTOR; |
| if (flags & SHORT) |
| { |
| sp = va_arg (ap, short *); |
| *sp = nread; |
| } |
| else if (flags & LONG) |
| { |
| lp = va_arg (ap, long *); |
| *lp = nread; |
| } |
| #ifndef _NO_LONGLONG |
| else if (flags & LONGDBL) |
| { |
| llp = va_arg (ap, long long*); |
| *llp = nread; |
| } |
| #endif |
| else |
| { |
| ip = va_arg (ap, int *); |
| *ip = nread; |
| } |
| continue; |
| |
| /* |
| * Disgusting backwards compatibility hacks. XXX |
| */ |
| case '\0': /* compat */ |
| return EOF; |
| |
| default: /* compat */ |
| if (isupper (c)) |
| flags |= LONG; |
| type = CT_INT; |
| ccfn = (u_long (*)())_strtol_r; |
| base = 10; |
| break; |
| } |
| |
| process: |
| /* |
| * We have a conversion that requires input. |
| */ |
| if (BufferEmpty) |
| goto input_failure; |
| |
| /* |
| * Consume leading white space, except for formats that |
| * suppress this. |
| */ |
| last_space_char = '\0'; |
| |
| if ((flags & NOSKIP) == 0) |
| { |
| while (isspace (*fp->_p)) |
| { |
| last_space_char = *fp->_p; |
| nread++; |
| if (--fp->_r > 0) |
| fp->_p++; |
| else |
| #ifndef CYGNUS_NEC |
| if (__srefill (fp)) |
| #endif |
| goto input_failure; |
| } |
| /* |
| * Note that there is at least one character in the |
| * buffer, so conversions that do not set NOSKIP ca |
| * no longer result in an input failure. |
| */ |
| } |
| |
| /* for vector formats process separator characters after first loop */ |
| if (looped && (flags & VECTOR)) |
| { |
| flags = orig_flags; |
| /* all formats other than default char have a separator char */ |
| if (vec_sep != ' ' || type != CT_CHAR) |
| { |
| if (vec_sep == ' ' && last_space_char != ' ' || |
| vec_sep != ' ' && *fp->_p != vec_sep) |
| goto match_failure; |
| if (vec_sep != ' ') |
| { |
| nread++; |
| if (--fp->_r > 0) |
| fp->_p++; |
| else |
| #ifndef CYGNUS_NEC |
| if (__srefill (fp)) |
| #endif |
| goto input_failure; |
| } |
| } |
| /* after eating the separator char, we must eat any white-space |
| after the separator char that precedes the data to convert */ |
| if ((flags & NOSKIP) == 0) |
| { |
| while (isspace (*fp->_p)) |
| { |
| last_space_char = *fp->_p; |
| nread++; |
| if (--fp->_r > 0) |
| fp->_p++; |
| else |
| #ifndef CYGNUS_NEC |
| if (__srefill (fp)) |
| #endif |
| goto input_failure; |
| } |
| } |
| |
| } |
| else /* save to counter-act changes made to flags when processing */ |
| orig_flags = flags; |
| |
| /* |
| * Do the conversion. |
| */ |
| switch (type) |
| { |
| |
| case CT_CHAR: |
| /* scan arbitrary characters (sets NOSKIP) */ |
| if (width == 0) |
| width = 1; |
| if (flags & SUPPRESS) |
| { |
| size_t sum = 0; |
| |
| for (;;) |
| { |
| if ((n = fp->_r) < (int)width) |
| { |
| sum += n; |
| width -= n; |
| fp->_p += n; |
| #ifndef CYGNUS_NEC |
| if (__srefill (fp)) |
| { |
| #endif |
| if (sum == 0) |
| goto input_failure; |
| break; |
| #ifndef CYGNUS_NEC |
| } |
| #endif |
| } |
| else |
| { |
| sum += width; |
| fp->_r -= width; |
| fp->_p += width; |
| break; |
| } |
| } |
| nread += sum; |
| } |
| else |
| { |
| int n = width; |
| if (!looped) |
| { |
| if (flags & VECTOR) |
| ch_dest = vec_buf.c; |
| else |
| ch_dest = va_arg (ap, char *); |
| } |
| #ifdef CYGNUS_NEC |
| /* Kludge city for the moment */ |
| if (fp->_r == 0) |
| goto input_failure; |
| |
| while (n && fp->_r) |
| { |
| *ch_dest++ = *(fp->_p++); |
| n--; |
| fp->_r--; |
| nread++; |
| } |
| #else |
| size_t r = fread (ch_dest, 1, width, fp); |
| |
| if (r == 0) |
| goto input_failure; |
| nread += r; |
| ch_dest += r; |
| #endif |
| if (!(flags & VECTOR)) |
| nassigned++; |
| } |
| break; |
| |
| case CT_CCL: |
| /* scan a (nonempty) character class (sets NOSKIP) */ |
| if (width == 0) |
| width = ~0; /* `infinity' */ |
| /* take only those things in the class */ |
| if (flags & SUPPRESS) |
| { |
| n = 0; |
| while (ccltab[*fp->_p]) |
| { |
| n++, fp->_r--, fp->_p++; |
| if (--width == 0) |
| break; |
| if (BufferEmpty) |
| { |
| if (n == 0) |
| goto input_failure; |
| break; |
| } |
| } |
| if (n == 0) |
| goto match_failure; |
| } |
| else |
| { |
| p0 = p = va_arg (ap, char *); |
| while (ccltab[*fp->_p]) |
| { |
| fp->_r--; |
| *p++ = *fp->_p++; |
| if (--width == 0) |
| break; |
| if (BufferEmpty) |
| { |
| if (p == p0) |
| goto input_failure; |
| break; |
| } |
| } |
| n = p - p0; |
| if (n == 0) |
| goto match_failure; |
| *p = 0; |
| nassigned++; |
| } |
| nread += n; |
| break; |
| |
| case CT_STRING: |
| /* like CCL, but zero-length string OK, & no NOSKIP */ |
| if (width == 0) |
| width = ~0; |
| if (flags & SUPPRESS) |
| { |
| n = 0; |
| while (!isspace (*fp->_p)) |
| { |
| n++, fp->_r--, fp->_p++; |
| if (--width == 0) |
| break; |
| if (BufferEmpty) |
| break; |
| } |
| nread += n; |
| } |
| else |
| { |
| p0 = p = va_arg (ap, char *); |
| while (!isspace (*fp->_p)) |
| { |
| fp->_r--; |
| *p++ = *fp->_p++; |
| if (--width == 0) |
| break; |
| if (BufferEmpty) |
| break; |
| } |
| *p = 0; |
| nread += p - p0; |
| nassigned++; |
| } |
| continue; |
| |
| case CT_INT: |
| { |
| unsigned int_width_left = 0; |
| int skips = 0; |
| int_width = width; |
| #ifdef hardway |
| if (int_width == 0 || int_width > sizeof (buf) - 1) |
| #else |
| /* size_t is unsigned, hence this optimisation */ |
| if (int_width - 1 > sizeof (buf) - 2) |
| #endif |
| { |
| int_width_left = width - (sizeof (buf) - 1); |
| int_width = sizeof (buf) - 1; |
| } |
| flags |= SIGNOK | NDIGITS | NZDIGITS | NNZDIGITS; |
| for (p = buf; int_width; int_width--) |
| { |
| c = *fp->_p; |
| /* |
| * Switch on the character; `goto ok' if we |
| * accept it as a part of number. |
| */ |
| switch (c) |
| { |
| /* |
| * The digit 0 is always legal, but is special. |
| * For %i conversions, if no digits (zero or nonzero) |
| * have been scanned (only signs), we will have base==0. |
| * In that case, we should set it to 8 and enable 0x |
| * prefixing. Also, if we have not scanned zero digits |
| * before this, do not turn off prefixing (someone else |
| * will turn it off if we have scanned any nonzero digits). |
| */ |
| case '0': |
| if (! (flags & NNZDIGITS)) |
| goto ok; |
| if (base == 0) |
| { |
| base = 8; |
| flags |= PFXOK; |
| } |
| if (flags & NZDIGITS) |
| { |
| flags &= ~(SIGNOK | NZDIGITS | NDIGITS); |
| goto ok; |
| } |
| flags &= ~(SIGNOK | PFXOK | NDIGITS); |
| if (int_width_left) |
| { |
| int_width_left--; |
| int_width++; |
| } |
| ++skips; |
| goto skip; |
| |
| /* 1 through 7 always legal */ |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| base = basefix[base]; |
| flags &= ~(SIGNOK | PFXOK | NDIGITS | NNZDIGITS); |
| goto ok; |
| |
| /* digits 8 and 9 ok iff decimal or hex */ |
| case '8': |
| case '9': |
| base = basefix[base]; |
| if (base <= 8) |
| break; /* not legal here */ |
| flags &= ~(SIGNOK | PFXOK | NDIGITS | NNZDIGITS); |
| goto ok; |
| |
| /* letters ok iff hex */ |
| case 'A': |
| case 'B': |
| case 'C': |
| case 'D': |
| case 'E': |
| case 'F': |
| case 'a': |
| case 'b': |
| case 'c': |
| case 'd': |
| case 'e': |
| case 'f': |
| /* no need to fix base here */ |
| if (base <= 10) |
| break; /* not legal here */ |
| flags &= ~(SIGNOK | PFXOK | NDIGITS | NNZDIGITS); |
| goto ok; |
| |
| /* sign ok only as first character */ |
| case '+': |
| case '-': |
| if (flags & SIGNOK) |
| { |
| flags &= ~SIGNOK; |
| goto ok; |
| } |
| break; |
| |
| /* x ok iff flag still set & 2nd char */ |
| case 'x': |
| case 'X': |
| if (flags & PFXOK && p == buf + 1) |
| { |
| base = 16;/* if %i */ |
| flags &= ~PFXOK; |
| /* We must reset the NZDIGITS and NDIGITS |
| flags that would have been unset by seeing |
| the zero that preceded the X or x. */ |
| flags |= NZDIGITS | NDIGITS; |
| goto ok; |
| } |
| break; |
| } |
| |
| /* |
| * If we got here, c is not a legal character |
| * for a number. Stop accumulating digits. |
| */ |
| break; |
| ok: |
| /* |
| * c is legal: store it and look at the next. |
| */ |
| *p++ = c; |
| skip: |
| if (--fp->_r > 0) |
| fp->_p++; |
| else |
| #ifndef CYGNUS_NEC |
| if (__srefill (fp)) |
| #endif |
| break; /* EOF */ |
| } |
| /* |
| * If we had only a sign, it is no good; push back the sign. |
| * If the number ends in `x', it was [sign] '0' 'x', so push back |
| * the x and treat it as [sign] '0'. |
| */ |
| if (flags & NDIGITS) |
| { |
| if (p > buf) |
| _CAST_VOID ungetc (*(u_char *)-- p, fp); |
| goto match_failure; |
| } |
| c = ((u_char *) p)[-1]; |
| if (c == 'x' || c == 'X') |
| { |
| --p; |
| /*(void)*/ ungetc (c, fp); |
| } |
| if ((flags & SUPPRESS) == 0) |
| { |
| u_long res; |
| |
| *p = 0; |
| res = (*ccfn) (rptr, buf, (char **) NULL, base); |
| if ((flags & POINTER) && !(flags & VECTOR)) |
| *(va_arg (ap, _PTR *)) = (_PTR) (unsigned _POINTER_INT) res; |
| else if (flags & SHORT) |
| { |
| if (!(flags & VECTOR)) |
| sp = va_arg (ap, short *); |
| else if (!looped) |
| sp = vec_buf.h; |
| *sp++ = res; |
| } |
| else if (flags & LONG) |
| { |
| if (!(flags & VECTOR)) |
| lp = va_arg (ap, long *); |
| else if (!looped) |
| lp = vec_buf.l; |
| *lp++ = res; |
| } |
| #ifndef _NO_LONGLONG |
| else if (flags & LONGDBL) |
| { |
| u_long_long resll; |
| if (ccfn == _strtoul_r) |
| resll = _strtoull_r (rptr, buf, (char **) NULL, base); |
| else |
| resll = _strtoll_r (rptr, buf, (char **) NULL, base); |
| llp = va_arg (ap, long long*); |
| *llp = resll; |
| } |
| #endif |
| else |
| { |
| if (!(flags & VECTOR)) |
| { |
| ip = va_arg (ap, int *); |
| *ip++ = res; |
| } |
| else |
| { |
| if (!looped) |
| ch_dest = vec_buf.c; |
| *ch_dest++ = (char)res; |
| } |
| } |
| if (!(flags & VECTOR)) |
| nassigned++; |
| } |
| nread += p - buf + skips; |
| break; |
| } |
| |
| #ifdef FLOATING_POINT |
| case CT_FLOAT: |
| { |
| /* scan a floating point number as if by strtod */ |
| /* This code used to assume that the number of digits is reasonable. |
| However, ANSI / ISO C makes no such stipulation; we have to get |
| exact results even when there is an unreasonable amount of |
| leading zeroes. */ |
| long leading_zeroes = 0; |
| long zeroes, exp_adjust; |
| char *exp_start = NULL; |
| unsigned fl_width = width; |
| unsigned width_left = 0; |
| #ifdef hardway |
| if (fl_width == 0 || fl_width > sizeof (buf) - 1) |
| #else |
| /* size_t is unsigned, hence this optimisation */ |
| if (fl_width - 1 > sizeof (buf) - 2) |
| #endif |
| { |
| width_left = fl_width - (sizeof (buf) - 1); |
| fl_width = sizeof (buf) - 1; |
| } |
| flags |= SIGNOK | NDIGITS | DPTOK | EXPOK; |
| zeroes = 0; |
| exp_adjust = 0; |
| for (p = buf; fl_width; ) |
| { |
| c = *fp->_p; |
| /* |
| * This code mimicks the integer conversion |
| * code, but is much simpler. |
| */ |
| switch (c) |
| { |
| |
| case '0': |
| if (flags & NDIGITS) |
| { |
| flags &= ~SIGNOK; |
| zeroes++; |
| if (width_left) |
| { |
| width_left--; |
| fl_width++; |
| } |
| goto fskip; |
| } |
| /* Fall through. */ |
| case '1': |
| case '2': |
| case '3': |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| case '8': |
| case '9': |
| flags &= ~(SIGNOK | NDIGITS); |
| goto fok; |
| |
| case '+': |
| case '-': |
| if (flags & SIGNOK) |
| { |
| flags &= ~SIGNOK; |
| goto fok; |
| } |
| break; |
| case '.': |
| if (flags & DPTOK) |
| { |
| flags &= ~(SIGNOK | DPTOK); |
| leading_zeroes = zeroes; |
| goto fok; |
| } |
| break; |
| case 'e': |
| case 'E': |
| /* no exponent without some digits */ |
| if ((flags & (NDIGITS | EXPOK)) == EXPOK |
| || ((flags & EXPOK) && zeroes)) |
| { |
| if (! (flags & DPTOK)) |
| { |
| exp_adjust = zeroes - leading_zeroes; |
| exp_start = p; |
| } |
| flags = |
| (flags & ~(EXPOK | DPTOK)) | |
| SIGNOK | NDIGITS; |
| zeroes = 0; |
| goto fok; |
| } |
| break; |
| } |
| break; |
| fok: |
| *p++ = c; |
| fskip: |
| fl_width--; |
| ++nread; |
| if (--fp->_r > 0) |
| fp->_p++; |
| else |
| #ifndef CYGNUS_NEC |
| if (__srefill (fp)) |
| #endif |
| break; /* EOF */ |
| } |
| if (zeroes) |
| flags &= ~NDIGITS; |
| /* |
| * If no digits, might be missing exponent digits |
| * (just give back the exponent) or might be missing |
| * regular digits, but had sign and/or decimal point. |
| */ |
| if (flags & NDIGITS) |
| { |
| if (flags & EXPOK) |
| { |
| /* no digits at all */ |
| while (p > buf) |
| { |
| ungetc (*(u_char *)-- p, fp); |
| --nread; |
| } |
| goto match_failure; |
| } |
| /* just a bad exponent (e and maybe sign) */ |
| c = *(u_char *)-- p; |
| --nread; |
| if (c != 'e' && c != 'E') |
| { |
| _CAST_VOID ungetc (c, fp); /* sign */ |
| c = *(u_char *)-- p; |
| --nread; |
| } |
| _CAST_VOID ungetc (c, fp); |
| } |
| if ((flags & SUPPRESS) == 0) |
| { |
| #ifdef _NO_LONGDBL |
| double res; |
| #else /* !_NO_LONG_DBL */ |
| long double res; |
| #endif /* !_NO_LONG_DBL */ |
| long new_exp = 0; |
| |
| *p = 0; |
| if ((flags & (DPTOK | EXPOK)) == EXPOK) |
| { |
| exp_adjust = zeroes - leading_zeroes; |
| new_exp = -exp_adjust; |
| exp_start = p; |
| } |
| else if (exp_adjust) |
| new_exp = _strtol_r (rptr, (exp_start + 1), NULL, 10) - exp_adjust; |
| if (exp_adjust) |
| { |
| |
| /* If there might not be enough space for the new exponent, |
| truncate some trailing digits to make room. */ |
| if (exp_start >= buf + sizeof (buf) - MAX_LONG_LEN) |
| exp_start = buf + sizeof (buf) - MAX_LONG_LEN - 1; |
| sprintf (exp_start, "e%ld", new_exp); |
| } |
| #ifdef __SPE__ |
| if (flags & FIXEDPOINT) |
| { |
| __uint64_t ufix64; |
| if (flags & SIGNED) |
| ufix64 = (__uint64_t)_strtosfix64_r (rptr, buf, NULL); |
| else |
| ufix64 = _strtoufix64_r (rptr, buf, NULL); |
| if (flags & SHORT) |
| { |
| __uint16_t *sp = va_arg (ap, __uint16_t *); |
| *sp = (__uint16_t)(ufix64 >> 48); |
| } |
| else if (flags & LONG) |
| { |
| __uint64_t *llp = va_arg (ap, __uint64_t *); |
| *llp = ufix64; |
| } |
| else |
| { |
| __uint32_t *lp = va_arg (ap, __uint32_t *); |
| *lp = (__uint32_t)(ufix64 >> 32); |
| } |
| nassigned++; |
| break; |
| } |
| |
| #endif /* __SPE__ */ |
| #ifdef _NO_LONGDBL |
| res = _strtod_r (rptr, buf, NULL); |
| #else /* !_NO_LONGDBL */ |
| res = _strtold (buf, NULL); |
| #endif /* !_NO_LONGDBL */ |
| if (flags & LONG) |
| { |
| dp = va_arg (ap, double *); |
| *dp = res; |
| } |
| else if (flags & LONGDBL) |
| { |
| ldp = va_arg (ap, _LONG_DOUBLE *); |
| *ldp = res; |
| } |
| else |
| { |
| if (!(flags & VECTOR)) |
| flp = va_arg (ap, float *); |
| else if (!looped) |
| flp = vec_buf.f; |
| *flp++ = res; |
| } |
| if (!(flags & VECTOR)) |
| nassigned++; |
| } |
| break; |
| } |
| #endif /* FLOATING_POINT */ |
| } |
| if (vec_read_count-- > 1) |
| { |
| looped = 1; |
| goto process; |
| } |
| if (flags & VECTOR) |
| { |
| int i; |
| unsigned long *vp = va_arg (ap, unsigned long *); |
| for (i = 0; i < 4; ++i) |
| *vp++ = vec_buf.l[i]; |
| nassigned++; |
| } |
| } |
| input_failure: |
| return nassigned ? nassigned : -1; |
| match_failure: |
| return nassigned; |
| } |
| |