char * __hldtoa(long double e, const char *xdigs, int ndigits, int *decpt, int *sign, char **rve) { return (__hdtoa((double)e, xdigs, ndigits, decpt, sign, rve)); }
int __vfprintf(FILE *fp, const char *fmt0, __va_list ap) { char *fmt; /* format string */ int ch; /* character from fmt */ int n, n2; /* handy integers (short term usage) */ char *cp; /* handy char pointer (short term usage) */ struct __siov *iovp; /* for PRINT macro */ int flags; /* flags as above */ int ret; /* return value accumulator */ int width; /* width from format (%8d), or 0 */ int prec; /* precision from format; <0 for N/A */ char sign; /* sign prefix (' ', '+', '-', or \0) */ wchar_t wc; mbstate_t ps; #ifdef FLOATING_POINT /* * We can decompose the printed representation of floating * point numbers into several parts, some of which may be empty: * * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ * A B ---C--- D E F * * A: 'sign' holds this value if present; '\0' otherwise * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal * C: cp points to the string MMMNNN. Leading and trailing * zeros are not in the string and must be added. * D: expchar holds this character; '\0' if no exponent, e.g. %f * F: at least two digits for decimal, at least one digit for hex */ char *decimal_point = NULL; int signflag; /* true if float is negative */ union { /* floating point arguments %[aAeEfFgG] */ double dbl; long double ldbl; } fparg; int expt; /* integer value of exponent */ char expchar; /* exponent character: [eEpP\0] */ char *dtoaend; /* pointer to end of converted digits */ int expsize; /* character count for expstr */ int lead; /* sig figs before decimal or group sep */ int ndig; /* actual number of digits returned by dtoa */ char expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ char *dtoaresult = NULL; #endif uintmax_t _umax; /* integer arguments %[diouxX] */ enum { OCT, DEC, HEX } base; /* base for %[diouxX] conversion */ int dprec; /* a copy of prec if %[diouxX], 0 otherwise */ int realsz; /* field size expanded by dprec */ int size; /* size of converted field or string */ const char *xdigs; /* digits for %[xX] conversion */ #define NIOV 8 struct __suio uio; /* output information: summary */ struct __siov iov[NIOV];/* ... and individual io vectors */ char buf[BUF]; /* buffer with space for digits of uintmax_t */ char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */ union arg *argtable; /* args, built due to positional arg */ union arg statargtable[STATIC_ARG_TBL_SIZE]; size_t argtablesiz; int nextarg; /* 1-based argument index */ va_list orgap; /* original argument pointer */ #ifdef PRINTF_WIDE_CHAR char *convbuf; /* buffer for wide to multi-byte conversion */ #endif /* * Choose PADSIZE to trade efficiency vs. size. If larger printf * fields occur frequently, increase PADSIZE and make the initialisers * below longer. */ #define PADSIZE 16 /* pad chunk size */ static char blanks[PADSIZE] = {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; static char zeroes[PADSIZE] = {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; static const char xdigs_lower[16] = "0123456789abcdef"; static const char xdigs_upper[16] = "0123456789ABCDEF"; /* * BEWARE, these `goto error' on error, and PAD uses `n'. */ #define PRINT(ptr, len) do { \ iovp->iov_base = (ptr); \ iovp->iov_len = (len); \ uio.uio_resid += (len); \ iovp++; \ if (++uio.uio_iovcnt >= NIOV) { \ if (__sprint(fp, &uio)) \ goto error; \ iovp = iov; \ } \ } while (0) #define PAD(howmany, with) do { \ if ((n = (howmany)) > 0) { \ while (n > PADSIZE) { \ PRINT(with, PADSIZE); \ n -= PADSIZE; \ } \ PRINT(with, n); \ } \ } while (0) #define PRINTANDPAD(p, ep, len, with) do { \ n2 = (ep) - (p); \ if (n2 > (len)) \ n2 = (len); \ if (n2 > 0) \ PRINT((p), n2); \ PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ } while(0) #define FLUSH() do { \ if (uio.uio_resid && __sprint(fp, &uio)) \ goto error; \ uio.uio_iovcnt = 0; \ iovp = iov; \ } while (0) /* * To extend shorts properly, we need both signed and unsigned * argument extraction methods. */ #define SARG() \ ((intmax_t)(flags&MAXINT ? GETARG(intmax_t) : \ flags&LLONGINT ? GETARG(long long) : \ flags&LONGINT ? GETARG(long) : \ flags&PTRINT ? GETARG(ptrdiff_t) : \ flags&SIZEINT ? GETARG(ssize_t) : \ flags&SHORTINT ? (short)GETARG(int) : \ flags&CHARINT ? (__signed char)GETARG(int) : \ GETARG(int))) #define UARG() \ ((uintmax_t)(flags&MAXINT ? GETARG(uintmax_t) : \ flags&LLONGINT ? GETARG(unsigned long long) : \ flags&LONGINT ? GETARG(unsigned long) : \ flags&PTRINT ? (uintptr_t)GETARG(ptrdiff_t) : /* XXX */ \ flags&SIZEINT ? GETARG(size_t) : \ flags&SHORTINT ? (unsigned short)GETARG(int) : \ flags&CHARINT ? (unsigned char)GETARG(int) : \ GETARG(unsigned int))) /* * Append a digit to a value and check for overflow. */ #define APPEND_DIGIT(val, dig) do { \ if ((val) > INT_MAX / 10) \ goto overflow; \ (val) *= 10; \ if ((val) > INT_MAX - to_digit((dig))) \ goto overflow; \ (val) += to_digit((dig)); \ } while (0) /* * Get * arguments, including the form *nn$. Preserve the nextarg * that the argument can be gotten once the type is determined. */ #define GETASTER(val) \ n2 = 0; \ cp = fmt; \ while (is_digit(*cp)) { \ APPEND_DIGIT(n2, *cp); \ cp++; \ } \ if (*cp == '$') { \ int hold = nextarg; \ if (argtable == NULL) { \ argtable = statargtable; \ __find_arguments(fmt0, orgap, &argtable, &argtablesiz); \ } \ nextarg = n2; \ val = GETARG(int); \ nextarg = hold; \ fmt = ++cp; \ } else { \ val = GETARG(int); \ } /* * Get the argument indexed by nextarg. If the argument table is * built, use it to get the argument. If its not, get the next * argument (and arguments must be gotten sequentially). */ #define GETARG(type) \ ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ (nextarg++, va_arg(ap, type))) _SET_ORIENTATION(fp, -1); /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ if (cantwrite(fp)) { errno = EBADF; return (EOF); } /* optimise fprintf(stderr) (and other unbuffered Unix files) */ if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && fp->_file >= 0) return (__sbprintf(fp, fmt0, ap)); fmt = (char *)fmt0; argtable = NULL; nextarg = 1; va_copy(orgap, ap); uio.uio_iov = iovp = iov; uio.uio_resid = 0; uio.uio_iovcnt = 0; ret = 0; #ifdef PRINTF_WIDE_CHAR convbuf = NULL; #endif memset(&ps, 0, sizeof(ps)); /* * Scan the format for conversions (`%' character). */ for (;;) { cp = fmt; while ((n = mbrtowc(&wc, fmt, MB_CUR_MAX, &ps)) > 0) { fmt += n; if (wc == '%') { fmt--; break; } } if (fmt != cp) { ptrdiff_t m = fmt - cp; if (m < 0 || m > INT_MAX - ret) goto overflow; PRINT(cp, m); ret += m; } if (n <= 0) goto done; fmt++; /* skip over '%' */ flags = 0; dprec = 0; width = 0; prec = -1; sign = '\0'; ox[1] = '\0'; rflag: ch = *fmt++; reswitch: switch (ch) { case ' ': /* * ``If the space and + flags both appear, the space * flag will be ignored.'' * -- ANSI X3J11 */ if (!sign) sign = ' '; goto rflag; case '#': flags |= ALT; goto rflag; case '\'': /* grouping not implemented */ goto rflag; case '*': /* * ``A negative field width argument is taken as a * - flag followed by a positive field width.'' * -- ANSI X3J11 * They don't exclude field widths read from args. */ GETASTER(width); if (width >= 0) goto rflag; if (width == INT_MIN) goto overflow; width = -width; /* FALLTHROUGH */ case '-': flags |= LADJUST; goto rflag; case '+': sign = '+'; goto rflag; case '.': if ((ch = *fmt++) == '*') { GETASTER(n); prec = n < 0 ? -1 : n; goto rflag; } n = 0; while (is_digit(ch)) { APPEND_DIGIT(n, ch); ch = *fmt++; } if (ch == '$') { nextarg = n; if (argtable == NULL) { argtable = statargtable; __find_arguments(fmt0, orgap, &argtable, &argtablesiz); } goto rflag; } prec = n; goto reswitch; case '0': /* * ``Note that 0 is taken as a flag, not as the * beginning of a field width.'' * -- ANSI X3J11 */ flags |= ZEROPAD; goto rflag; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': n = 0; do { APPEND_DIGIT(n, ch); ch = *fmt++; } while (is_digit(ch)); if (ch == '$') { nextarg = n; if (argtable == NULL) { argtable = statargtable; __find_arguments(fmt0, orgap, &argtable, &argtablesiz); } goto rflag; } width = n; goto reswitch; #ifdef FLOATING_POINT case 'L': flags |= LONGDBL; goto rflag; #endif case 'h': if (*fmt == 'h') { fmt++; flags |= CHARINT; } else { flags |= SHORTINT; } goto rflag; case 'j': flags |= MAXINT; goto rflag; case 'l': if (*fmt == 'l') { fmt++; flags |= LLONGINT; } else { flags |= LONGINT; } goto rflag; case 'q': flags |= LLONGINT; goto rflag; case 't': flags |= PTRINT; goto rflag; case 'z': flags |= SIZEINT; goto rflag; case 'c': #ifdef PRINTF_WIDE_CHAR if (flags & LONGINT) { mbstate_t mbs; size_t mbseqlen; memset(&mbs, 0, sizeof(mbs)); mbseqlen = wcrtomb(buf, (wchar_t)GETARG(wint_t), &mbs); if (mbseqlen == (size_t)-1) { fp->_flags |= __SERR; errno = EILSEQ; goto error; } cp = buf; size = (int)mbseqlen; } else { #endif *(cp = buf) = GETARG(int); size = 1; #ifdef PRINTF_WIDE_CHAR } #endif sign = '\0'; break; case 'D': flags |= LONGINT; /*FALLTHROUGH*/ case 'd': case 'i': _umax = SARG(); if ((intmax_t)_umax < 0) { _umax = -_umax; sign = '-'; } base = DEC; goto number; #ifdef FLOATING_POINT case 'a': case 'A': if (ch == 'a') { ox[1] = 'x'; xdigs = xdigs_lower; expchar = 'p'; } else { ox[1] = 'X'; xdigs = xdigs_upper; expchar = 'P'; } if (prec >= 0) prec++; if (dtoaresult) __freedtoa(dtoaresult); if (flags & LONGDBL) { fparg.ldbl = GETARG(long double); dtoaresult = cp = __hldtoa(fparg.ldbl, xdigs, prec, &expt, &signflag, &dtoaend); if (dtoaresult == NULL) { errno = ENOMEM; goto error; } } else { fparg.dbl = GETARG(double); dtoaresult = cp = __hdtoa(fparg.dbl, xdigs, prec, &expt, &signflag, &dtoaend); if (dtoaresult == NULL) { errno = ENOMEM; goto error; } } if (prec < 0) prec = dtoaend - cp; if (expt == INT_MAX) ox[1] = '\0'; goto fp_common; case 'e': case 'E': expchar = ch; if (prec < 0) /* account for digit before decpt */ prec = DEFPREC + 1; else prec++; goto fp_begin; case 'f': case 'F': expchar = '\0'; goto fp_begin; case 'g': case 'G': expchar = ch - ('g' - 'e'); if (prec == 0) prec = 1; fp_begin: if (prec < 0) prec = DEFPREC; if (dtoaresult) __freedtoa(dtoaresult); if (flags & LONGDBL) { fparg.ldbl = GETARG(long double); dtoaresult = cp = __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, &expt, &signflag, &dtoaend); if (dtoaresult == NULL) { errno = ENOMEM; goto error; } } else {
int __printf_render_float(struct __printf_io* io, const struct printf_info* pi, const void* const* arg) { int prec; /* precision from format; <0 for N/A */ char* dtoaresult; /* buffer allocated by dtoa */ char expchar; /* exponent character: [eEpP\0] */ char* cp; int expt; /* integer value of exponent */ int signflag; /* true if float is negative */ char* dtoaend; /* pointer to end of converted digits */ char sign; /* sign prefix (' ', '+', '-', or \0) */ int size; /* size of converted field or string */ int ndig; /* actual number of digits returned by dtoa */ int expsize; /* character count for expstr */ char expstr[MAXEXPDIG + 2]; /* buffer for exponent string: e+ZZZ */ int nseps; /* number of group separators with ' */ int nrepeats; /* number of repeats of the last group */ const char* grouping; /* locale specific numeric grouping rules */ int lead; /* sig figs before decimal or group sep */ long double ld; double d; int realsz; /* field size expanded by dprec, sign, etc */ int dprec; /* a copy of prec if [diouxX], 0 otherwise */ char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */ int prsize; /* max size of printed field */ int ret; /* return value accumulator */ char* decimal_point; /* locale specific decimal point */ int n2; /* XXX: for PRINTANDPAD */ char thousands_sep; /* locale specific thousands separator */ char buf[BUF]; /* buffer with space for digits of uintmax_t */ const char* xdigs; int flag; prec = pi->prec; ox[1] = '\0'; sign = pi->showsign; flag = 0; ret = 0; thousands_sep = *(localeconv()->thousands_sep); grouping = NULL; if (pi->alt) { grouping = localeconv()->grouping; } decimal_point = localeconv()->decimal_point; dprec = -1; switch (pi->spec) { case 'a': case 'A': if (pi->spec == 'a') { ox[1] = 'x'; xdigs = __lowercase_hex; expchar = 'p'; } else { ox[1] = 'X'; xdigs = __uppercase_hex; expchar = 'P'; } if (prec >= 0) { prec++; } if (pi->is_long_double) { ld = *((long double*)arg[0]); dtoaresult = cp = __hldtoa(ld, xdigs, prec, &expt, &signflag, &dtoaend); } else { d = *((double*)arg[0]); dtoaresult = cp = __hdtoa(d, xdigs, prec, &expt, &signflag, &dtoaend); } if (prec < 0) { prec = dtoaend - cp; } if (expt == INT_MAX) { ox[1] = '\0'; } goto fp_common; case 'e': case 'E': expchar = pi->spec; if (prec < 0) { /* account for digit before decpt */ prec = DEFPREC + 1; } else { prec++; } break; case 'f': case 'F': expchar = '\0'; break; case 'g': case 'G': expchar = pi->spec - ('g' - 'e'); if (prec == 0) { prec = 1; } break; default: assert(pi->spec == 'f'); } if (prec < 0) { prec = DEFPREC; } if (pi->is_long_double) { ld = *((long double*)arg[0]); dtoaresult = cp = __ldtoa(&ld, expchar ? 2 : 3, prec, &expt, &signflag, &dtoaend); } else { d = *((double*)arg[0]); dtoaresult = cp = dtoa(d, expchar ? 2 : 3, prec, &expt, &signflag, &dtoaend); if (expt == 9999) { expt = INT_MAX; } } fp_common: if (signflag) { sign = '-'; } if (expt == INT_MAX) { /* inf or nan */ if (*cp == 'N') { cp = (pi->spec >= 'a') ? "nan" : "NAN"; sign = '\0'; } else { cp = (pi->spec >= 'a') ? "inf" : "INF"; } size = 3; flag = 1; goto here; } ndig = dtoaend - cp; if (pi->spec == 'g' || pi->spec == 'G') { if (expt > -4 && expt <= prec) { /* Make %[gG] smell like %[fF] */ expchar = '\0'; if (pi->alt) { prec -= expt; } else { prec = ndig - expt; } if (prec < 0) { prec = 0; } } else { /* * Make %[gG] smell like %[eE], but * trim trailing zeroes if no # flag. */ if (!pi->alt) { prec = ndig; } } } if (expchar) { expsize = exponent(expstr, expt - 1, expchar); size = expsize + prec; if (prec > 1 || pi->alt) { ++size; } } else { /* space for digits before decimal point */ if (expt > 0) { size = expt; } else { /* "0" */ size = 1; } /* space for decimal pt and following digits */ if (prec || pi->alt) { size += prec + 1; } if (grouping && expt > 0) { /* space for thousands' grouping */ nseps = nrepeats = 0; lead = expt; while (*grouping != CHAR_MAX) { if (lead <= *grouping) { break; } lead -= *grouping; if (*(grouping + 1)) { nseps++; grouping++; } else { nrepeats++; } } size += nseps + nrepeats; } else { lead = expt; } } here: /* * All reasonable formats wind up here. At this point, `cp' * points to a string which (if not flags&LADJUST) should be * padded out to `width' places. If flags&ZEROPAD, it should * first be prefixed by any sign or other prefix; otherwise, * it should be blank padded before the prefix is emitted. * After any left-hand padding and prefixing, emit zeroes * required by a decimal [diouxX] precision, then print the * string proper, then emit zeroes required by any leftover * floating precision; finally, if LADJUST, pad with blanks. * * Compute actual size, so we know how much to pad. * size excludes decimal prec; realsz includes it. */ realsz = dprec > size ? dprec : size; if (sign) { realsz++; } if (ox[1]) { realsz += 2; } prsize = pi->width > realsz ? pi->width : realsz; /* right-adjusting blank padding */ if (pi->pad != '0' && pi->left == 0) { ret += __printf_pad(io, pi->width - realsz, 0); } /* prefix */ if (sign) { ret += __printf_puts(io, &sign, 1); } if (ox[1]) { /* ox[1] is either x, X, or \0 */ ox[0] = '0'; ret += __printf_puts(io, ox, 2); } /* right-adjusting zero padding */ if (pi->pad == '0' && pi->left == 0) { ret += __printf_pad(io, pi->width - realsz, 1); } /* leading zeroes from decimal precision */ ret += __printf_pad(io, dprec - size, 1); if (flag) { ret += __printf_puts(io, cp, size); } else { /* glue together f_p fragments */ if (!expchar) { /* %[fF] or sufficiently short %[gG] */ if (expt <= 0) { ret += __printf_puts(io, "0", 1); if (prec || pi->alt) { ret += __printf_puts(io, decimal_point, 1); } ret += __printf_pad(io, -expt, 1); /* already handled initial 0's */ prec += expt; } else { PRINTANDPAD(cp, dtoaend, lead, 1); cp += lead; if (grouping) { while (nseps > 0 || nrepeats > 0) { if (nrepeats > 0) { nrepeats--; } else { grouping--; nseps--; } ret += __printf_puts(io, &thousands_sep, 1); PRINTANDPAD(cp, dtoaend, *grouping, 1); cp += *grouping; } if (cp > dtoaend) { cp = dtoaend; } } if (prec || pi->alt) { ret += __printf_puts(io, decimal_point, 1); } } PRINTANDPAD(cp, dtoaend, prec, 1); } else { /* %[eE] or sufficiently long %[gG] */ if (prec > 1 || pi->alt) { buf[0] = *cp++; buf[1] = *decimal_point; ret += __printf_puts(io, buf, 2); ret += __printf_puts(io, cp, ndig - 1); ret += __printf_pad(io, prec - ndig, 1); } else { /* XeYYY */ ret += __printf_puts(io, cp, 1); } ret += __printf_puts(io, expstr, expsize); } } /* left-adjusting padding (always blank) */ if (pi->left) { ret += __printf_pad(io, pi->width - realsz, 0); } __printf_flush(io); if (dtoaresult != NULL) { freedtoa(dtoaresult); } return (ret); }
/* * Non-MT-safe version */ int __vfprintf(FILE *fp, locale_t locale, const char *fmt0, __va_list ap) { char *fmt; /* format string */ int ch; /* character from fmt */ int n, n2; /* handy integers (short term usage) */ char *cp; /* handy char pointer (short term usage) */ int flags; /* flags as above */ int ret; /* return value accumulator */ int width; /* width from format (%8d), or 0 */ int prec; /* precision from format; <0 for N/A */ char sign; /* sign prefix (' ', '+', '-', or \0) */ struct grouping_state gs; /* thousands' grouping info */ #ifdef FLOATING_POINT /* * We can decompose the printed representation of floating * point numbers into several parts, some of which may be empty: * * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ * A B ---C--- D E F * * A: 'sign' holds this value if present; '\0' otherwise * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal * C: cp points to the string MMMNNN. Leading and trailing * zeros are not in the string and must be added. * D: expchar holds this character; '\0' if no exponent, e.g. %f * F: at least two digits for decimal, at least one digit for hex */ char *decimal_point = NULL; /* locale specific decimal point */ int decpt_len; /* length of decimal_point */ int signflag; /* true if float is negative */ union { /* floating point arguments %[aAeEfFgG] */ double dbl; long double ldbl; } fparg; int expt; /* integer value of exponent */ char expchar; /* exponent character: [eEpP\0] */ char *dtoaend; /* pointer to end of converted digits */ int expsize; /* character count for expstr */ int ndig; /* actual number of digits returned by dtoa */ char expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ char *dtoaresult = NULL; /* buffer allocated by dtoa */ #endif u_long ulval; /* integer arguments %[diouxX] */ uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ int base; /* base for [diouxX] conversion */ int dprec; /* a copy of prec if [diouxX], 0 otherwise */ int realsz; /* field size expanded by dprec, sign, etc */ int size; /* size of converted field or string */ const char *xdigs; /* digits for %[xX] conversion */ struct io_state io; /* I/O buffering state */ char buf[BUF]; /* buffer with space for digits of uintmax_t */ char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */ union arg *argtable; /* args, built due to positional arg */ union arg statargtable [STATIC_ARG_TBL_SIZE]; int nextarg; /* 1-based argument index */ va_list orgap; /* original argument pointer */ char *convbuf; /* wide to multibyte conversion result */ static const char xdigs_lower[16] = "0123456789abcdef"; static const char xdigs_upper[16] = "0123456789ABCDEF"; /* BEWARE, these `goto error' on error. */ #define PRINT(ptr, len) { \ if (io_print(&io, (ptr), (len), locale)) \ goto error; \ } #define PAD(howmany, with) { \ if (io_pad(&io, (howmany), (with), locale)) \ goto error; \ } #define PRINTANDPAD(p, ep, len, with) { \ if (io_printandpad(&io, (p), (ep), (len), (with), locale)) \ goto error; \ } #define FLUSH() { \ if (io_flush(&io, locale)) \ goto error; \ } /* * Get the argument indexed by nextarg. If the argument table is * built, use it to get the argument. If its not, get the next * argument (and arguments must be gotten sequentially). */ #define GETARG(type) \ ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ (nextarg++, va_arg(ap, type))) /* * To extend shorts properly, we need both signed and unsigned * argument extraction methods. */ #define SARG() \ (flags&LONGINT ? GETARG(long) : \ flags&SHORTINT ? (long)(short)GETARG(int) : \ flags&CHARINT ? (long)(signed char)GETARG(int) : \ (long)GETARG(int)) #define UARG() \ (flags&LONGINT ? GETARG(u_long) : \ flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ (u_long)GETARG(u_int)) #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) #define SJARG() \ (flags&INTMAXT ? GETARG(intmax_t) : \ flags&SIZET ? (intmax_t)GETARG(ssize_t) : \ flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ (intmax_t)GETARG(long long)) #define UJARG() \ (flags&INTMAXT ? GETARG(uintmax_t) : \ flags&SIZET ? (uintmax_t)GETARG(size_t) : \ flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ (uintmax_t)GETARG(unsigned long long)) /* * Append a digit to a value and check for overflow. */ #define APPEND_DIGIT(val, dig) do { \ if ((val) > INT_MAX / 10) \ goto overflow; \ (val) *= 10; \ if ((val) > INT_MAX - to_digit((dig))) \ goto overflow; \ (val) += to_digit((dig)); \ } while (0) /* * Get * arguments, including the form *nn$. Preserve the nextarg * that the argument can be gotten once the type is determined. */ #define GETASTER(val) \ n2 = 0; \ cp = fmt; \ while (is_digit(*cp)) { \ APPEND_DIGIT(n2, *cp); \ cp++; \ } \ if (*cp == '$') { \ int hold = nextarg; \ if (argtable == NULL) { \ argtable = statargtable; \ if (__find_arguments (fmt0, orgap, &argtable)) { \ ret = EOF; \ goto error; \ } \ } \ nextarg = n2; \ val = GETARG(int); \ nextarg = hold; \ fmt = ++cp; \ } else { \ val = GETARG(int); \ } _SET_ORIENTATION(fp, -1); /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ if (cantwrite(fp)) { errno = EBADF; return (EOF); } fmt = (char *)fmt0; argtable = NULL; nextarg = 1; va_copy(orgap, ap); io_init(&io, fp); ret = 0; #ifdef FLOATING_POINT decimal_point = localeconv_l(locale)->decimal_point; /* The overwhelmingly common case is decpt_len == 1. */ decpt_len = (decimal_point[1] == '\0' ? 1 : strlen(decimal_point)); #endif #ifdef PRINTF_WIDE_CHAR convbuf = NULL; #endif /* * Scan the format for conversions (`%' character). */ for (;;) { for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) /* void */; if (fmt != cp) { ptrdiff_t m = fmt - cp; if (m < 0 || m > INT_MAX - ret) goto overflow; PRINT(cp, m); ret += m; } if (ch == '\0') goto done; fmt++; /* skip over '%' */ flags = 0; dprec = 0; width = 0; prec = -1; gs.grouping = NULL; sign = '\0'; ox[1] = '\0'; rflag: ch = *fmt++; reswitch: switch (ch) { case ' ': /* * ``If the space and + flags both appear, the space * flag will be ignored.'' * -- ANSI X3J11 */ if (!sign) sign = ' '; goto rflag; case '#': flags |= ALT; goto rflag; case '*': /* * ``A negative field width argument is taken as a * - flag followed by a positive field width.'' * -- ANSI X3J11 * They don't exclude field widths read from args. */ GETASTER(width); if (width >= 0) goto rflag; if (width == INT_MIN) goto overflow; width = -width; /* FALLTHROUGH */ case '-': flags |= LADJUST; goto rflag; case '+': sign = '+'; goto rflag; case '\'': flags |= GROUPING; goto rflag; case '.': if ((ch = *fmt++) == '*') { GETASTER(n); prec = n < 0 ? -1 : n; goto rflag; } n = 0; while (is_digit(ch)) { APPEND_DIGIT(n, ch); ch = *fmt++; } if (ch == '$') { nextarg = n; if (argtable == NULL) { argtable = statargtable; if (__find_arguments (fmt0, orgap, &argtable)) { ret = EOF; goto error; } } goto rflag; } prec = n; goto reswitch; case '0': /* * ``Note that 0 is taken as a flag, not as the * beginning of a field width.'' * -- ANSI X3J11 */ flags |= ZEROPAD; goto rflag; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': n = 0; do { APPEND_DIGIT(n, ch); ch = *fmt++; } while (is_digit(ch)); if (ch == '$') { nextarg = n; if (argtable == NULL) { argtable = statargtable; if (__find_arguments (fmt0, orgap, &argtable)) { ret = EOF; goto error; } } goto rflag; } width = n; goto reswitch; #ifdef FLOATING_POINT case 'L': flags |= LONGDBL; goto rflag; #endif case 'h': if (flags & SHORTINT) { flags &= ~SHORTINT; flags |= CHARINT; } else { flags |= SHORTINT; } goto rflag; case 'j': flags |= INTMAXT; goto rflag; case 'l': if (flags & LONGINT) { flags &= ~LONGINT; flags |= LLONGINT; } else { flags |= LONGINT; } goto rflag; case 'q': flags |= LLONGINT; /* not necessarily */ goto rflag; case 't': flags |= PTRDIFFT; goto rflag; case 'z': flags |= SIZET; goto rflag; case 'C': flags |= LONGINT; /*FALLTHROUGH*/ case 'c': #ifdef PRINTF_WIDE_CHAR if (flags & LONGINT) { mbstate_t mbs; size_t mbseqlen; memset(&mbs, 0, sizeof(mbs)); mbseqlen = wcrtomb(buf, (wchar_t)GETARG(wint_t), &mbs); if (mbseqlen == (size_t)-1) { fp->_flags |= __SERR; errno = EILSEQ; goto error; } cp = buf; size = (int)mbseqlen; } else { #endif *(cp = buf) = GETARG(int); size = 1; #ifdef PRINTF_WIDE_CHAR } #endif sign = '\0'; break; case 'D': flags |= LONGINT; /*FALLTHROUGH*/ case 'd': case 'i': if (flags & INTMAX_SIZE) { ujval = SJARG(); if ((intmax_t)ujval < 0) { ujval = -ujval; sign = '-'; } } else { ulval = SARG(); if ((long)ulval < 0) { ulval = -ulval; sign = '-'; } } base = 10; goto number; #ifdef FLOATING_POINT case 'a': case 'A': if (ch == 'a') { ox[1] = 'x'; xdigs = xdigs_lower; expchar = 'p'; } else { ox[1] = 'X'; xdigs = xdigs_upper; expchar = 'P'; } if (prec >= 0) prec++; if (dtoaresult != NULL) __freedtoa(dtoaresult); if (flags & LONGDBL) { fparg.ldbl = GETARG(long double); dtoaresult = cp = __hldtoa(fparg.ldbl, xdigs, prec, &expt, &signflag, &dtoaend); if (dtoaresult == NULL) { errno = ENOMEM; goto error; } } else { fparg.dbl = GETARG(double); dtoaresult = cp = __hdtoa(fparg.dbl, xdigs, prec, &expt, &signflag, &dtoaend); if (dtoaresult == NULL) { errno = ENOMEM; goto error; } } if (prec < 0) prec = dtoaend - cp; if (expt == INT_MAX) ox[1] = '\0'; goto fp_common; case 'e': case 'E': expchar = ch; if (prec < 0) /* account for digit before decpt */ prec = DEFPREC + 1; else prec++; goto fp_begin; case 'f': case 'F': expchar = '\0'; goto fp_begin; case 'g': case 'G': expchar = ch - ('g' - 'e'); if (prec == 0) prec = 1; fp_begin: if (prec < 0) prec = DEFPREC; if (dtoaresult != NULL) __freedtoa(dtoaresult); if (flags & LONGDBL) { fparg.ldbl = GETARG(long double); dtoaresult = cp = __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, &expt, &signflag, &dtoaend); if (dtoaresult == NULL) { errno = ENOMEM; goto error; } } else {