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[apple/libc.git] / stdio / FreeBSD / vfwprintf.c
1 /*-
2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Chris Torek.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #if 0
34 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
36 #endif /* LIBC_SCCS and not lint */
37 #endif
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD: src/lib/libc/stdio/vfwprintf.c,v 1.42 2009/11/25 04:27:55 wollman Exp $");
40
41 #include "xlocale_private.h"
42
43 /*
44 * Actual wprintf innards.
45 *
46 * Avoid making gratuitous changes to this source file; it should be kept
47 * as close as possible to vfprintf.c for ease of maintenance.
48 */
49
50 #include "namespace.h"
51 #include <sys/types.h>
52
53 #include <ctype.h>
54 #include <limits.h>
55 #include <locale.h>
56 #include <stdarg.h>
57 #include <stddef.h>
58 #include <stdint.h>
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <wchar.h>
63 #include <wctype.h>
64 #include <errno.h>
65 #include "un-namespace.h"
66
67 #include <os/assumes.h>
68 #include <mach-o/dyld_priv.h>
69
70 #include "libc_private.h"
71 #include "local.h"
72 #include "fvwrite.h"
73 #include "printflocal.h"
74
75 static int __sprint(FILE *, locale_t, struct __suio *);
76 static int __sbprintf(FILE *, locale_t, const wchar_t *, va_list);
77 static wint_t __xfputwc(wchar_t, FILE *, locale_t);
78 static wchar_t *__mbsconv(char *, int, locale_t);
79 __private_extern__ const char *__fix_nogrouping(const char *);
80
81 #define CHAR wchar_t
82 #include "printfcommon.h"
83
84 struct grouping_state {
85 wchar_t thousands_sep; /* locale-specific thousands separator */
86 const char *grouping; /* locale-specific numeric grouping rules */
87 int lead; /* sig figs before decimal or group sep */
88 int nseps; /* number of group separators with ' */
89 int nrepeats; /* number of repeats of the last group */
90 };
91
92 static const mbstate_t initial_mbs;
93
94 static inline wchar_t
95 get_decpt(locale_t loc)
96 {
97 mbstate_t mbs;
98 wchar_t decpt;
99 int nconv;
100
101 mbs = initial_mbs;
102 nconv = mbrtowc_l(&decpt, localeconv_l(loc)->decimal_point, MB_CUR_MAX_L(loc), &mbs, loc);
103 if (nconv == (size_t)-1 || nconv == (size_t)-2)
104 decpt = '.'; /* failsafe */
105 return (decpt);
106 }
107
108 static inline wchar_t
109 get_thousep(locale_t loc)
110 {
111 mbstate_t mbs;
112 wchar_t thousep;
113 int nconv;
114
115 mbs = initial_mbs;
116 nconv = mbrtowc_l(&thousep, localeconv_l(loc)->thousands_sep,
117 MB_CUR_MAX_L(loc), &mbs, loc);
118 if (nconv == (size_t)-1 || nconv == (size_t)-2)
119 thousep = '\0'; /* failsafe */
120 return (thousep);
121 }
122
123 /*
124 * Initialize the thousands' grouping state in preparation to print a
125 * number with ndigits digits. This routine returns the total number
126 * of wide characters that will be printed.
127 */
128 static int
129 grouping_init(struct grouping_state *gs, int ndigits, locale_t loc)
130 {
131
132 gs->grouping = __fix_nogrouping(localeconv_l(loc)->grouping);
133 gs->thousands_sep = get_thousep(loc);
134
135 gs->nseps = gs->nrepeats = 0;
136 gs->lead = ndigits;
137 while (*gs->grouping != CHAR_MAX) {
138 if (gs->lead <= *gs->grouping)
139 break;
140 gs->lead -= *gs->grouping;
141 if (*(gs->grouping+1)) {
142 gs->nseps++;
143 gs->grouping++;
144 } else
145 gs->nrepeats++;
146 }
147 return (gs->nseps + gs->nrepeats);
148 }
149
150 /*
151 * Print a number with thousands' separators.
152 */
153 static int
154 grouping_print(struct grouping_state *gs, struct io_state *iop,
155 const CHAR *cp, const CHAR *ep, locale_t loc)
156 {
157 const CHAR *cp0 = cp;
158
159 if (io_printandpad(iop, cp, ep, gs->lead, zeroes, loc))
160 return (-1);
161 cp += gs->lead;
162 while (gs->nseps > 0 || gs->nrepeats > 0) {
163 if (gs->nrepeats > 0)
164 gs->nrepeats--;
165 else {
166 gs->grouping--;
167 gs->nseps--;
168 }
169 if (io_print(iop, &gs->thousands_sep, 1, loc))
170 return (-1);
171 if (io_printandpad(iop, cp, ep, *gs->grouping, zeroes, loc))
172 return (-1);
173 cp += *gs->grouping;
174 }
175 if (cp > ep)
176 cp = ep;
177 return (cp - cp0);
178 }
179
180
181 /*
182 * Flush out all the vectors defined by the given uio,
183 * then reset it so that it can be reused.
184 *
185 * XXX The fact that we do this a character at a time and convert to a
186 * multibyte character sequence even if the destination is a wide
187 * string eclipses the benefits of buffering.
188 */
189 static int
190 __sprint(FILE *fp, locale_t loc, struct __suio *uio)
191 {
192 struct __siov *iov;
193 wchar_t *p;
194 int i, len;
195
196 iov = uio->uio_iov;
197 for (; uio->uio_resid != 0; uio->uio_resid -= len, iov++) {
198 p = (wchar_t *)iov->iov_base;
199 len = iov->iov_len;
200 for (i = 0; i < len; i++) {
201 if (__xfputwc(p[i], fp, loc) == WEOF)
202 return (-1);
203 }
204 }
205 uio->uio_iovcnt = 0;
206 return (0);
207 }
208
209 /*
210 * Helper function for `fprintf to unbuffered unix file': creates a
211 * temporary buffer. We only work on write-only files; this avoids
212 * worries about ungetc buffers and so forth.
213 */
214 static int
215 __sbprintf(FILE *fp, locale_t loc, const wchar_t *fmt, va_list ap)
216 {
217 int ret;
218 FILE fake;
219 unsigned char buf[BUFSIZ];
220 struct __sFILEX ext;
221 fake._extra = &ext;
222 INITEXTRA(&fake);
223
224 /* XXX This is probably not needed. */
225 if (prepwrite(fp) != 0)
226 return (EOF);
227
228 /* copy the important variables */
229 fake._flags = fp->_flags & ~__SNBF;
230 fake._file = fp->_file;
231 fake._cookie = fp->_cookie;
232 fake._write = fp->_write;
233 fake._orientation = fp->_orientation;
234 fake._mbstate = fp->_mbstate;
235
236 /* set up the buffer */
237 fake._bf._base = fake._p = buf;
238 fake._bf._size = fake._w = sizeof(buf);
239 fake._lbfsize = 0; /* not actually used, but Just In Case */
240
241 /* do the work, then copy any error status */
242 ret = __vfwprintf(&fake, loc, fmt, ap);
243 if (ret >= 0 && __fflush(&fake))
244 ret = WEOF;
245 if (fake._flags & __SERR)
246 fp->_flags |= __SERR;
247 return (ret);
248 }
249
250 /*
251 * Like __fputwc, but handles fake string (__SSTR) files properly.
252 * File must already be locked.
253 */
254 static wint_t
255 __xfputwc(wchar_t wc, FILE *fp, locale_t loc)
256 {
257 mbstate_t mbs;
258 char buf[MB_LEN_MAX];
259 struct __suio uio;
260 struct __siov iov;
261 size_t len;
262
263 if ((fp->_flags & __SSTR) == 0)
264 return (__fputwc(wc, fp, loc));
265
266 mbs = initial_mbs;
267 if ((len = wcrtomb_l(buf, wc, &mbs, loc)) == (size_t)-1) {
268 fp->_flags |= __SERR;
269 return (WEOF);
270 }
271 uio.uio_iov = &iov;
272 uio.uio_resid = len;
273 uio.uio_iovcnt = 1;
274 iov.iov_base = buf;
275 iov.iov_len = len;
276 return (__sfvwrite(fp, &uio) != EOF ? (wint_t)wc : WEOF);
277 }
278
279 /*
280 * Convert a multibyte character string argument for the %s format to a wide
281 * string representation. ``prec'' specifies the maximum number of bytes
282 * to output. If ``prec'' is greater than or equal to zero, we can't assume
283 * that the multibyte char. string ends in a null character.
284 */
285 static wchar_t *
286 __mbsconv(char *mbsarg, int prec, locale_t loc)
287 {
288 mbstate_t mbs;
289 wchar_t *convbuf, *wcp;
290 const char *p;
291 size_t insize, nchars, nconv = 0;
292 int mb_cur_max = MB_CUR_MAX_L(loc);
293
294 if (mbsarg == NULL)
295 return (NULL);
296
297 /*
298 * Supplied argument is a multibyte string; convert it to wide
299 * characters first.
300 */
301 if (prec >= 0) {
302 /*
303 * String is not guaranteed to be NUL-terminated. Find the
304 * number of characters to print.
305 */
306 p = mbsarg;
307 insize = nchars = nconv = 0;
308 mbs = initial_mbs;
309 while (nchars != (size_t)prec) {
310 nconv = mbrlen_l(p, mb_cur_max, &mbs, loc);
311 if (nconv == 0 || nconv == (size_t)-1 ||
312 nconv == (size_t)-2)
313 break;
314 p += nconv;
315 nchars++;
316 insize += nconv;
317 }
318 if (nconv == (size_t)-1 || nconv == (size_t)-2)
319 return (NULL);
320 } else {
321 insize = strlen(mbsarg);
322 nconv = 0;
323 }
324
325 /*
326 * Allocate buffer for the result and perform the conversion,
327 * converting at most `size' bytes of the input multibyte string to
328 * wide characters for printing.
329 */
330 convbuf = malloc((insize + 1) * sizeof(*convbuf));
331 if (convbuf == NULL)
332 return (NULL);
333 wcp = convbuf;
334 p = mbsarg;
335 mbs = initial_mbs;
336 while (insize != 0) {
337 nconv = mbrtowc_l(wcp, p, insize, &mbs, loc);
338 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2)
339 break;
340 wcp++;
341 p += nconv;
342 insize -= nconv;
343 }
344 if (nconv == (size_t)-1 || nconv == (size_t)-2) {
345 free(convbuf);
346 return (NULL);
347 }
348 *wcp = L'\0';
349
350 return (convbuf);
351 }
352
353 /*
354 * MT-safe version
355 */
356 int
357 vfwprintf_l(FILE * __restrict fp, locale_t loc, const wchar_t * __restrict fmt0, va_list ap)
358 {
359 int ret;
360
361 NORMALIZE_LOCALE(loc);
362 FLOCKFILE(fp);
363 /* optimise fprintf(stderr) (and other unbuffered Unix files) */
364 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
365 fp->_file >= 0)
366 ret = __sbprintf(fp, loc, fmt0, ap);
367 else
368 ret = __vfwprintf(fp, loc, fmt0, ap);
369 FUNLOCKFILE(fp);
370 return (ret);
371 }
372
373 int
374 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap)
375 {
376 return vfwprintf_l(fp, __current_locale(), fmt0, ap);
377 }
378
379 // Defined in vfprintf.c
380 bool __printf_is_memory_read_only(void *addr, size_t size);
381
382 /*
383 * The size of the buffer we use as scratch space for integer
384 * conversions, among other things. We need enough space to
385 * write a uintmax_t in octal (plus one byte).
386 */
387 #if UINTMAX_MAX <= UINT64_MAX
388 #define BUF 32
389 #else
390 #error "BUF must be large enough to format a uintmax_t"
391 #endif
392
393 /*
394 * Non-MT-safe version
395 */
396 __private_extern__ int
397 __vfwprintf(FILE *fp, locale_t loc, const wchar_t *fmt0, va_list ap)
398 {
399 wchar_t *fmt; /* format string */
400 wchar_t ch; /* character from fmt */
401 ssize_t n, n2; /* handy integer (short term usage) */
402 wchar_t *cp; /* handy char pointer (short term usage) */
403 int flags; /* flags as above */
404 ssize_t ret; /* return value accumulator */
405 ssize_t width; /* width from format (%8d), or 0 */
406 ssize_t prec; /* precision from format; <0 for N/A */
407 wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */
408 struct grouping_state gs; /* thousands' grouping info */
409
410 #ifndef NO_FLOATING_POINT
411 /*
412 * We can decompose the printed representation of floating
413 * point numbers into several parts, some of which may be empty:
414 *
415 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ
416 * A B ---C--- D E F
417 *
418 * A: 'sign' holds this value if present; '\0' otherwise
419 * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal
420 * C: cp points to the string MMMNNN. Leading and trailing
421 * zeros are not in the string and must be added.
422 * D: expchar holds this character; '\0' if no exponent, e.g. %f
423 * F: at least two digits for decimal, at least one digit for hex
424 */
425 wchar_t decimal_point; /* locale specific decimal point */
426 int signflag; /* true if float is negative */
427 union { /* floating point arguments %[aAeEfFgG] */
428 double dbl;
429 long double ldbl;
430 } fparg;
431 int expt; /* integer value of exponent */
432 char expchar; /* exponent character: [eEpP\0] */
433 char *dtoaend; /* pointer to end of converted digits */
434 int expsize; /* character count for expstr */
435 int ndig; /* actual number of digits returned by dtoa */
436 wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */
437 char *dtoaresult; /* buffer allocated by dtoa */
438 #endif
439 #ifdef VECTORS
440 union arg vval; /* Vector argument. */
441 wchar_t *pct; /* Pointer to '%' at beginning of specifier. */
442 wchar_t vsep; /* Vector separator character. */
443 #endif
444 u_long ulval; /* integer arguments %[diouxX] */
445 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */
446 int base; /* base for [diouxX] conversion */
447 int dprec; /* a copy of prec if [diouxX], 0 otherwise */
448 ssize_t realsz; /* field size expanded by dprec, sign, etc */
449 ssize_t size; /* size of converted field or string */
450 ssize_t prsize; /* max size of printed field */
451 const char *xdigs; /* digits for [xX] conversion */
452 struct io_state io; /* I/O buffering state */
453 wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */
454 wchar_t ox[2]; /* space for 0x hex-prefix */
455 union arg *argtable; /* args, built due to positional arg */
456 union arg statargtable [STATIC_ARG_TBL_SIZE];
457 int nextarg; /* 1-based argument index */
458 va_list orgap; /* original argument pointer */
459 wchar_t *convbuf; /* multibyte to wide conversion result */
460
461 static const char xdigs_lower[16] = "0123456789abcdef";
462 static const char xdigs_upper[16] = "0123456789ABCDEF";
463
464 /* BEWARE, these `goto error' on error. */
465 #define PRINT(ptr, len) do { \
466 if (io_print(&io, (ptr), (len), loc)) \
467 goto error; \
468 } while (0)
469 #define PAD(howmany, with) { \
470 if (io_pad(&io, (howmany), (with), loc)) \
471 goto error; \
472 }
473 #define PRINTANDPAD(p, ep, len, with) { \
474 if (io_printandpad(&io, (p), (ep), (len), (with), loc)) \
475 goto error; \
476 }
477 #define FLUSH() { \
478 if (io_flush(&io, loc)) \
479 goto error; \
480 }
481
482 /*
483 * Get the argument indexed by nextarg. If the argument table is
484 * built, use it to get the argument. If its not, get the next
485 * argument (and arguments must be gotten sequentially).
486 */
487 #define GETARG(type) \
488 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
489 (nextarg++, va_arg(ap, type)))
490
491 /*
492 * To extend shorts properly, we need both signed and unsigned
493 * argument extraction methods.
494 */
495 #define SARG() \
496 (flags&LONGINT ? GETARG(long) : \
497 flags&SHORTINT ? (long)(short)GETARG(int) : \
498 flags&CHARINT ? (long)(signed char)GETARG(int) : \
499 (long)GETARG(int))
500 #define UARG() \
501 (flags&LONGINT ? GETARG(u_long) : \
502 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
503 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \
504 (u_long)GETARG(u_int))
505 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT)
506 #define SJARG() \
507 (flags&INTMAXT ? GETARG(intmax_t) : \
508 flags&SIZET ? (intmax_t)GETARG(ssize_t) : \
509 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \
510 (intmax_t)GETARG(long long))
511 #define UJARG() \
512 (flags&INTMAXT ? GETARG(uintmax_t) : \
513 flags&SIZET ? (uintmax_t)GETARG(size_t) : \
514 flags&PTRDIFFT ? (uintmax_t)(unsigned long)GETARG(ptrdiff_t) : \
515 (uintmax_t)GETARG(unsigned long long))
516
517 /*
518 * Get * arguments, including the form *nn$. Preserve the nextarg
519 * that the argument can be gotten once the type is determined.
520 */
521 #define GETASTER(val) \
522 n2 = 0; \
523 cp = fmt; \
524 while (is_digit(*cp)) { \
525 n2 = 10 * n2 + to_digit(*cp); \
526 cp++; \
527 } \
528 if (*cp == '$') { \
529 int hold = nextarg; \
530 if (argtable == NULL) { \
531 argtable = statargtable; \
532 if (__find_warguments (fmt0, orgap, &argtable)) { \
533 ret = EOF; \
534 goto error; \
535 } \
536 } \
537 nextarg = n2; \
538 val = GETARG (int); \
539 nextarg = hold; \
540 fmt = ++cp; \
541 } else { \
542 val = GETARG (int); \
543 }
544
545
546 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */
547 if (prepwrite(fp) != 0) {
548 errno = EBADF;
549 return (EOF);
550 }
551 ORIENT(fp, 1);
552
553 convbuf = NULL;
554 fmt = (wchar_t *)fmt0;
555 argtable = NULL;
556 nextarg = 1;
557 va_copy(orgap, ap);
558 io_init(&io, fp);
559 ret = 0;
560 #ifndef NO_FLOATING_POINT
561 decimal_point = get_decpt(loc);
562 #endif
563
564 /*
565 * Scan the format for conversions (`%' character).
566 */
567 for (;;) {
568 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
569 /* void */;
570 if ((n = fmt - cp) != 0) {
571 if (ret + n > INT_MAX) {
572 ret = EOF;
573 errno = EOVERFLOW;
574 goto error;
575 }
576 PRINT(cp, n);
577 ret += n;
578 }
579 if (ch == '\0')
580 goto done;
581 #ifdef VECTORS
582 pct = fmt;
583 #endif /* VECTORS */
584 fmt++; /* skip over '%' */
585
586 flags = 0;
587 dprec = 0;
588 width = 0;
589 prec = -1;
590 gs.grouping = NULL;
591 sign = '\0';
592 ox[1] = '\0';
593 #ifdef VECTORS
594 vsep = 'X'; /* Illegal value, changed to defaults later. */
595 #endif /* VECTORS */
596
597 rflag: ch = *fmt++;
598 reswitch: switch (ch) {
599 case ' ':
600 /*-
601 * ``If the space and + flags both appear, the space
602 * flag will be ignored.''
603 * -- ANSI X3J11
604 */
605 if (!sign)
606 sign = ' ';
607 goto rflag;
608 case '#':
609 flags |= ALT;
610 goto rflag;
611 #ifdef VECTORS
612 case ',': case ';': case ':': case '_':
613 vsep = ch;
614 goto rflag;
615 #endif /* VECTORS */
616 case '*':
617 /*-
618 * ``A negative field width argument is taken as a
619 * - flag followed by a positive field width.''
620 * -- ANSI X3J11
621 * They don't exclude field widths read from args.
622 */
623 GETASTER (width);
624 if (width >= 0)
625 goto rflag;
626 width = -width;
627 /* FALLTHROUGH */
628 case '-':
629 flags |= LADJUST;
630 goto rflag;
631 case '+':
632 sign = '+';
633 goto rflag;
634 case '\'':
635 flags |= GROUPING;
636 goto rflag;
637 case '.':
638 if ((ch = *fmt++) == '*') {
639 GETASTER (prec);
640 goto rflag;
641 }
642 prec = 0;
643 while (is_digit(ch)) {
644 prec = 10 * prec + to_digit(ch);
645 ch = *fmt++;
646 }
647 goto reswitch;
648 case '0':
649 /*-
650 * ``Note that 0 is taken as a flag, not as the
651 * beginning of a field width.''
652 * -- ANSI X3J11
653 */
654 flags |= ZEROPAD;
655 goto rflag;
656 case '1': case '2': case '3': case '4':
657 case '5': case '6': case '7': case '8': case '9':
658 n = 0;
659 do {
660 n = 10 * n + to_digit(ch);
661 ch = *fmt++;
662 } while (is_digit(ch));
663 if (ch == '$') {
664 nextarg = n;
665 if (argtable == NULL) {
666 argtable = statargtable;
667 if (__find_warguments (fmt0, orgap,
668 &argtable)) {
669 ret = EOF;
670 goto error;
671 }
672 }
673 goto rflag;
674 }
675 width = n;
676 goto reswitch;
677 #ifndef NO_FLOATING_POINT
678 case 'L':
679 flags |= LONGDBL;
680 goto rflag;
681 #endif
682 case 'h':
683 if (flags & SHORTINT) {
684 flags &= ~SHORTINT;
685 flags |= CHARINT;
686 } else
687 flags |= SHORTINT;
688 goto rflag;
689 case 'j':
690 flags |= INTMAXT;
691 goto rflag;
692 case 'l':
693 if (flags & LONGINT) {
694 flags &= ~LONGINT;
695 flags |= LLONGINT;
696 } else
697 flags |= LONGINT;
698 goto rflag;
699 case 'q':
700 flags |= LLONGINT; /* not necessarily */
701 goto rflag;
702 case 't':
703 flags |= PTRDIFFT;
704 goto rflag;
705 case 'z':
706 flags |= SIZET;
707 goto rflag;
708 case 'C':
709 flags |= LONGINT;
710 /*FALLTHROUGH*/
711 case 'c':
712 #ifdef VECTORS
713 if (flags & VECTOR)
714 break;
715 #endif /* VECTORS */
716 if (flags & LONGINT)
717 *(cp = buf) = (wchar_t)GETARG(wint_t);
718 else
719 *(cp = buf) = (wchar_t)btowc_l(GETARG(int), loc);
720 size = 1;
721 sign = '\0';
722 break;
723 case 'D':
724 flags |= LONGINT;
725 /*FALLTHROUGH*/
726 case 'd':
727 case 'i':
728 #ifdef VECTORS
729 if (flags & VECTOR)
730 break;
731 #endif /* VECTORS */
732 if (flags & INTMAX_SIZE) {
733 ujval = SJARG();
734 if ((intmax_t)ujval < 0) {
735 ujval = -ujval;
736 sign = '-';
737 }
738 } else {
739 ulval = SARG();
740 if ((long)ulval < 0) {
741 ulval = -ulval;
742 sign = '-';
743 }
744 }
745 base = 10;
746 goto number;
747 #ifndef NO_FLOATING_POINT
748 case 'a':
749 case 'A':
750 #ifdef VECTORS
751 if (flags & VECTOR) {
752 flags |= FPT;
753 break;
754 }
755 #endif /* VECTORS */
756 if (ch == 'a') {
757 ox[1] = 'x';
758 xdigs = xdigs_lower;
759 expchar = 'p';
760 } else {
761 ox[1] = 'X';
762 xdigs = xdigs_upper;
763 expchar = 'P';
764 }
765 if (prec >= 0)
766 prec++;
767 if (flags & LONGDBL) {
768 fparg.ldbl = GETARG(long double);
769 dtoaresult =
770 __hldtoa(fparg.ldbl, xdigs, prec,
771 &expt, &signflag, &dtoaend);
772 } else {
773 fparg.dbl = GETARG(double);
774 dtoaresult =
775 __hdtoa(fparg.dbl, xdigs, prec,
776 &expt, &signflag, &dtoaend);
777 }
778 if (prec < 0)
779 prec = dtoaend - dtoaresult;
780 if (expt == INT_MAX)
781 ox[1] = '\0';
782 free(convbuf);
783 ndig = dtoaend - dtoaresult;
784 cp = convbuf = __mbsconv(dtoaresult, -1, loc);
785 freedtoa(dtoaresult);
786 goto fp_common;
787 case 'e':
788 case 'E':
789 #ifdef VECTORS
790 if (flags & VECTOR) {
791 flags |= FPT;
792 break;
793 }
794 #endif /* VECTORS */
795 expchar = ch;
796 if (prec < 0) /* account for digit before decpt */
797 prec = DEFPREC + 1;
798 else
799 prec++;
800 goto fp_begin;
801 case 'f':
802 case 'F':
803 #ifdef VECTORS
804 if (flags & VECTOR) {
805 flags |= FPT;
806 break;
807 }
808 #endif /* VECTORS */
809 expchar = '\0';
810 goto fp_begin;
811 case 'g':
812 case 'G':
813 #ifdef VECTORS
814 if (flags & VECTOR) {
815 flags |= FPT;
816 break;
817 }
818 #endif /* VECTORS */
819 expchar = ch - ('g' - 'e');
820 if (prec == 0)
821 prec = 1;
822 fp_begin:
823 if (prec < 0)
824 prec = DEFPREC;
825 free(convbuf);
826 if (flags & LONGDBL) {
827 fparg.ldbl = GETARG(long double);
828 dtoaresult =
829 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
830 &expt, &signflag, &dtoaend);
831 } else {
832 fparg.dbl = GETARG(double);
833 dtoaresult =
834 dtoa(fparg.dbl, expchar ? 2 : 3, prec,
835 &expt, &signflag, &dtoaend);
836 if (expt == 9999)
837 expt = INT_MAX;
838 }
839 ndig = dtoaend - dtoaresult;
840 cp = convbuf = __mbsconv(dtoaresult, -1, loc);
841 freedtoa(dtoaresult);
842 fp_common:
843 if (signflag)
844 sign = '-';
845 if (expt == INT_MAX) { /* inf or nan */
846 if (*cp == 'N') {
847 cp = (ch >= 'a') ? L"nan" : L"NAN";
848 sign = '\0';
849 } else
850 cp = (ch >= 'a') ? L"inf" : L"INF";
851 size = 3;
852 flags &= ~ZEROPAD;
853 break;
854 }
855 flags |= FPT;
856 if (ch == 'g' || ch == 'G') {
857 if (expt > -4 && expt <= prec) {
858 /* Make %[gG] smell like %[fF] */
859 expchar = '\0';
860 if (flags & ALT)
861 prec -= expt;
862 else
863 prec = ndig - expt;
864 if (prec < 0)
865 prec = 0;
866 } else {
867 /*
868 * Make %[gG] smell like %[eE], but
869 * trim trailing zeroes if no # flag.
870 */
871 if (!(flags & ALT))
872 prec = ndig;
873 }
874 }
875 if (expchar) {
876 expsize = exponent(expstr, expt - 1, expchar);
877 size = expsize + prec;
878 if (prec > 1 || flags & ALT)
879 ++size;
880 } else {
881 /* space for digits before decimal point */
882 if (expt > 0)
883 size = expt;
884 else /* "0" */
885 size = 1;
886 /* space for decimal pt and following digits */
887 if (prec || flags & ALT)
888 size += prec + 1;
889 if ((flags & GROUPING) && expt > 0)
890 size += grouping_init(&gs, expt, loc);
891 }
892 break;
893 #endif /* !NO_FLOATING_POINT */
894 case 'n':
895 {
896 /*
897 * Assignment-like behavior is specified if the
898 * value overflows or is otherwise unrepresentable.
899 * C99 says to use `signed char' for %hhn conversions.
900 */
901 void *ptr = GETARG(void *);
902 if (ptr == NULL)
903 continue;
904
905 if (flags & LLONGINT)
906 *(long long *)ptr = ret;
907 else if (flags & SIZET)
908 *(ssize_t *)ptr = (ssize_t)ret;
909 else if (flags & PTRDIFFT)
910 *(ptrdiff_t *)ptr = ret;
911 else if (flags & INTMAXT)
912 *(intmax_t *)ptr = ret;
913 else if (flags & LONGINT)
914 *(long *)ptr = ret;
915 else if (flags & SHORTINT)
916 *(short *)ptr = ret;
917 else if (flags & CHARINT)
918 *(signed char *)ptr = ret;
919 else
920 *(int *)ptr = ret;
921 continue; /* no output */
922 }
923 case 'O':
924 flags |= LONGINT;
925 /*FALLTHROUGH*/
926 case 'o':
927 #ifdef VECTORS
928 if (flags & VECTOR)
929 break;
930 #endif /* VECTORS */
931 if (flags & INTMAX_SIZE)
932 ujval = UJARG();
933 else
934 ulval = UARG();
935 base = 8;
936 goto nosign;
937 case 'p':
938 /*-
939 * ``The argument shall be a pointer to void. The
940 * value of the pointer is converted to a sequence
941 * of printable characters, in an implementation-
942 * defined manner.''
943 * -- ANSI X3J11
944 */
945 #ifdef VECTORS
946 if (flags & VECTOR)
947 break;
948 #endif /* VECTORS */
949 ujval = (uintmax_t)(uintptr_t)GETARG(void *);
950 base = 16;
951 xdigs = xdigs_lower;
952 flags = flags | INTMAXT;
953 ox[1] = 'x';
954 goto nosign;
955 case 'S':
956 flags |= LONGINT;
957 /*FALLTHROUGH*/
958 case 's':
959 if (flags & LONGINT) {
960 if ((cp = GETARG(wchar_t *)) == NULL)
961 cp = L"(null)";
962 } else {
963 char *mbp;
964
965 free(convbuf);
966 if ((mbp = GETARG(char *)) == NULL) {
967 convbuf = NULL;
968 cp = L"(null)";
969 } else {
970 convbuf = __mbsconv(mbp, prec, loc);
971 if (convbuf == NULL) {
972 fp->_flags |= __SERR;
973 goto error;
974 }
975 cp = convbuf;
976 }
977 }
978 #if 0 // wcsnlen needs API review first
979 size = (prec >= 0) ? wcsnlen(cp, prec) : wcslen(cp);
980 #else
981 size = wcslen(cp);
982 if (size >= INT_MAX) {
983 ret = EOF;
984 errno = EOVERFLOW;
985 goto error;
986 }
987 if(prec >= 0 && prec < size)
988 size = prec;
989 #endif
990 sign = '\0';
991 break;
992 case 'U':
993 flags |= LONGINT;
994 /*FALLTHROUGH*/
995 case 'u':
996 #ifdef VECTORS
997 if (flags & VECTOR)
998 break;
999 #endif /* VECTORS */
1000 if (flags & INTMAX_SIZE)
1001 ujval = UJARG();
1002 else
1003 ulval = UARG();
1004 base = 10;
1005 goto nosign;
1006 case 'X':
1007 xdigs = xdigs_upper;
1008 goto hex;
1009 case 'x':
1010 xdigs = xdigs_lower;
1011 hex:
1012 #ifdef VECTORS
1013 if (flags & VECTOR)
1014 break;
1015 #endif /* VECTORS */
1016 if (flags & INTMAX_SIZE)
1017 ujval = UJARG();
1018 else
1019 ulval = UARG();
1020 base = 16;
1021 /* leading 0x/X only if non-zero */
1022 if (flags & ALT &&
1023 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0))
1024 ox[1] = ch;
1025
1026 flags &= ~GROUPING;
1027 /* unsigned conversions */
1028 nosign: sign = '\0';
1029 /*-
1030 * ``... diouXx conversions ... if a precision is
1031 * specified, the 0 flag will be ignored.''
1032 * -- ANSI X3J11
1033 * except for %#.0o and zero value
1034 */
1035 number: if ((dprec = prec) >= 0)
1036 flags &= ~ZEROPAD;
1037
1038 /*-
1039 * ``The result of converting a zero value with an
1040 * explicit precision of zero is no characters.''
1041 * -- ANSI X3J11
1042 *
1043 * ``The C Standard is clear enough as is. The call
1044 * printf("%#.0o", 0) should print 0.''
1045 * -- Defect Report #151
1046 */
1047 cp = buf + BUF;
1048 if (flags & INTMAX_SIZE) {
1049 if (ujval != 0 || prec != 0 ||
1050 (flags & ALT && base == 8))
1051 cp = __ujtoa(ujval, cp, base,
1052 flags & ALT, xdigs);
1053 } else {
1054 if (ulval != 0 || prec != 0 ||
1055 (flags & ALT && base == 8))
1056 cp = __ultoa(ulval, cp, base,
1057 flags & ALT, xdigs);
1058 }
1059 size = buf + BUF - cp;
1060 if (size > BUF) /* should never happen */
1061 LIBC_ABORT("size (%zd) > BUF (%d)", size, BUF);
1062 if ((flags & GROUPING) && size != 0)
1063 size += grouping_init(&gs, size, loc);
1064 break;
1065 #ifdef VECTORS
1066 case 'v':
1067 flags |= VECTOR;
1068 goto rflag;
1069 #endif /* VECTORS */
1070 default: /* "%?" prints ?, unless ? is NUL */
1071 if (ch == '\0')
1072 goto done;
1073 /* pretend it was %c with argument ch */
1074 cp = buf;
1075 *cp = ch;
1076 size = 1;
1077 sign = '\0';
1078 break;
1079 }
1080
1081 #ifdef VECTORS
1082 if (flags & VECTOR) {
1083 /*
1084 * Do the minimum amount of work necessary to construct
1085 * a format specifier that can be used to recursively
1086 * call vfprintf() for each element in the vector.
1087 */
1088 int i, j; /* Counter. */
1089 int vcnt; /* Number of elements in vector. */
1090 char *vfmt; /* Pointer to format specifier. */
1091 #define EXTRAHH 2
1092 char vfmt_buf[32 + EXTRAHH]; /* Static buffer for format spec. */
1093 int vwidth = 0; /* Width specified via '*'. */
1094 int vprec = 0; /* Precision specified via '*'. */
1095 char *vstr; /* Used for asprintf(). */
1096 int vlen; /* Length returned by asprintf(). */
1097 enum {
1098 V_CHAR, V_SHORT, V_INT,
1099 V_PCHAR, V_PSHORT, V_PINT,
1100 V_FLOAT,
1101 #ifdef V64TYPE
1102 V_LONGLONG, V_PLONGLONG,
1103 V_DOUBLE,
1104 #endif /* V64TYPE */
1105 } vtype;
1106
1107 vval.vectorarg = GETARG(VECTORTYPE);
1108 /*
1109 * Set vfmt. If vfmt_buf may not be big enough,
1110 * malloc() space, taking care to free it later.
1111 * (EXTRAHH is for possible extra "hh")
1112 */
1113 if (&fmt[-1] - pct + EXTRAHH < sizeof(vfmt_buf))
1114 vfmt = vfmt_buf;
1115 else
1116 vfmt = (char *)malloc(&fmt[-1] - pct + EXTRAHH + 1);
1117
1118 /* Set the separator character, if not specified. */
1119 if (vsep == 'X') {
1120 if (ch == 'c')
1121 vsep = '\0';
1122 else
1123 vsep = ' ';
1124 }
1125
1126 /* Create the format specifier. */
1127 for (i = j = 0; i < &fmt[-1] - pct; i++) {
1128 switch (pct[i]) {
1129 case ',': case ';': case ':': case '_':
1130 case 'v': case 'h': case 'l':
1131 /* Ignore. */
1132 break;
1133 case '*':
1134 if (pct[i - 1] != '.')
1135 vwidth = 1;
1136 else
1137 vprec = 1;
1138 /* FALLTHROUGH */
1139 default:
1140 vfmt[j++] = pct[i];
1141 }
1142 }
1143
1144 /*
1145 * Determine the number of elements in the vector and
1146 * finish up the format specifier.
1147 */
1148 if (flags & SHORTINT) {
1149 switch (ch) {
1150 case 'c':
1151 vtype = V_SHORT;
1152 break;
1153 case 'p':
1154 vtype = V_PSHORT;
1155 break;
1156 default:
1157 vfmt[j++] = 'h';
1158 vtype = V_SHORT;
1159 break;
1160 }
1161 vcnt = 8;
1162 } else if (flags & LONGINT) {
1163 vcnt = 4;
1164 vtype = (ch == 'p') ? V_PINT : V_INT;
1165 #ifdef V64TYPE
1166 } else if (flags & LLONGINT) {
1167 switch (ch) {
1168 case 'a':
1169 case 'A':
1170 case 'e':
1171 case 'E':
1172 case 'f':
1173 case 'g':
1174 case 'G':
1175 vcnt = 2;
1176 vtype = V_DOUBLE;
1177 break;
1178 case 'd':
1179 case 'i':
1180 case 'u':
1181 case 'o':
1182 case 'p':
1183 case 'x':
1184 case 'X':
1185 vfmt[j++] = 'l';
1186 vfmt[j++] = 'l';
1187 vcnt = 2;
1188 vtype = (ch == 'p') ? V_PLONGLONG : V_LONGLONG;
1189 break;
1190 default:
1191 /*
1192 * The default case should never
1193 * happen.
1194 */
1195 case 'c':
1196 vcnt = 16;
1197 vtype = V_CHAR;
1198 }
1199 #endif /* V64TYPE */
1200 } else {
1201 switch (ch) {
1202 case 'a':
1203 case 'A':
1204 case 'e':
1205 case 'E':
1206 case 'f':
1207 case 'g':
1208 case 'G':
1209 vcnt = 4;
1210 vtype = V_FLOAT;
1211 break;
1212 default:
1213 /*
1214 * The default case should never
1215 * happen.
1216 */
1217 case 'd':
1218 case 'i':
1219 case 'u':
1220 case 'o':
1221 case 'x':
1222 case 'X':
1223 vfmt[j++] = 'h';
1224 vfmt[j++] = 'h';
1225 /* drop through */
1226 case 'p':
1227 case 'c':
1228 vcnt = 16;
1229 vtype = (ch == 'p') ? V_PCHAR : V_CHAR;
1230 }
1231 }
1232 vfmt[j++] = ch;
1233 vfmt[j++] = '\0';
1234
1235 /* Get a vector element. */
1236 #ifdef V64TYPE
1237 #define VPRINT(type, ind, args...) do { \
1238 switch (type) { \
1239 case V_CHAR: \
1240 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vuchararg[ind]); \
1241 break; \
1242 case V_PCHAR: \
1243 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vuchararg[ind]); \
1244 break; \
1245 case V_SHORT: \
1246 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vushortarg[ind]); \
1247 break; \
1248 case V_PSHORT: \
1249 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vushortarg[ind]); \
1250 break; \
1251 case V_INT: \
1252 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vuintarg[ind]); \
1253 break; \
1254 case V_PINT: \
1255 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vuintarg[ind]); \
1256 break; \
1257 case V_LONGLONG: \
1258 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vulonglongarg[ind]); \
1259 break; \
1260 case V_PLONGLONG: \
1261 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vulonglongarg[ind]); \
1262 break; \
1263 case V_FLOAT: \
1264 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vfloatarg[ind]); \
1265 break; \
1266 case V_DOUBLE: \
1267 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vdoublearg[ind]); \
1268 break; \
1269 } \
1270 ret += vlen; \
1271 PRINT((const CHAR *) vstr, vlen); \
1272 free(vstr); \
1273 } while (0)
1274 #else /* !V64TYPE */
1275 #define VPRINT(type, ind, args...) do { \
1276 switch (type) { \
1277 case V_CHAR: \
1278 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vuchararg[ind]); \
1279 break; \
1280 case V_PCHAR: \
1281 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vuchararg[ind]); \
1282 break; \
1283 case V_SHORT: \
1284 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vushortarg[ind]); \
1285 break; \
1286 case V_PSHORT: \
1287 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vushortarg[ind]); \
1288 break; \
1289 case V_INT: \
1290 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vuintarg[ind]); \
1291 break; \
1292 case V_PINT: \
1293 vlen = asprintf_l(&vstr, loc, vfmt , ## args, (void *)(uintptr_t)vval.vuintarg[ind]); \
1294 break; \
1295 case V_FLOAT: \
1296 vlen = asprintf_l(&vstr, loc, vfmt , ## args, vval.vfloatarg[ind]); \
1297 break; \
1298 } \
1299 ret += vlen; \
1300 PRINT((const CHAR *) vstr, vlen); \
1301 free(vstr); \
1302 } while (0)
1303 #endif /* V64TYPE */
1304
1305 /* Actually print. */
1306 if (vwidth == 0) {
1307 if (vprec == 0) {
1308 /* First element. */
1309 VPRINT(vtype, 0);
1310 for (i = 1; i < vcnt; i++) {
1311 /* Separator. */
1312 if(vsep)
1313 PRINT(&vsep, 1);
1314
1315 /* Element. */
1316 VPRINT(vtype, i);
1317 }
1318 } else {
1319 /* First element. */
1320 VPRINT(vtype, 0, prec);
1321 for (i = 1; i < vcnt; i++) {
1322 /* Separator. */
1323 if(vsep)
1324 PRINT(&vsep, 1);
1325
1326 /* Element. */
1327 VPRINT(vtype, i, prec);
1328 }
1329 }
1330 } else {
1331 if (vprec == 0) {
1332 /* First element. */
1333 VPRINT(vtype, 0, width);
1334 for (i = 1; i < vcnt; i++) {
1335 /* Separator. */
1336 if(vsep)
1337 PRINT(&vsep, 1);
1338
1339 /* Element. */
1340 VPRINT(vtype, i, width);
1341 }
1342 } else {
1343 /* First element. */
1344 VPRINT(vtype, 0, width, prec);
1345 for (i = 1; i < vcnt; i++) {
1346 /* Separator. */
1347 if(vsep)
1348 PRINT(&vsep, 1);
1349
1350 /* Element. */
1351 VPRINT(vtype, i, width, prec);
1352 }
1353 }
1354 }
1355 #undef VPRINT
1356
1357 if (vfmt != vfmt_buf)
1358 free(vfmt);
1359
1360 continue;
1361 }
1362 #endif /* VECTORS */
1363 /*
1364 * All reasonable formats wind up here. At this point, `cp'
1365 * points to a string which (if not flags&LADJUST) should be
1366 * padded out to `width' places. If flags&ZEROPAD, it should
1367 * first be prefixed by any sign or other prefix; otherwise,
1368 * it should be blank padded before the prefix is emitted.
1369 * After any left-hand padding and prefixing, emit zeroes
1370 * required by a decimal [diouxX] precision, then print the
1371 * string proper, then emit zeroes required by any leftover
1372 * floating precision; finally, if LADJUST, pad with blanks.
1373 *
1374 * Compute actual size, so we know how much to pad.
1375 * size excludes decimal prec; realsz includes it.
1376 */
1377 realsz = dprec > size ? dprec : size;
1378 if (sign)
1379 realsz++;
1380 if (ox[1])
1381 realsz += 2;
1382
1383 prsize = width > realsz ? width : realsz;
1384 if (ret + prsize > INT_MAX) {
1385 ret = EOF;
1386 errno = EOVERFLOW;
1387 goto error;
1388 }
1389
1390 /* right-adjusting blank padding */
1391 if ((flags & (LADJUST|ZEROPAD)) == 0)
1392 PAD(width - realsz, blanks);
1393
1394 /* prefix */
1395 if (sign)
1396 PRINT(&sign, 1);
1397
1398 if (ox[1]) { /* ox[1] is either x, X, or \0 */
1399 ox[0] = '0';
1400 PRINT(ox, 2);
1401 }
1402
1403 /* right-adjusting zero padding */
1404 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
1405 PAD(width - realsz, zeroes);
1406
1407 /* the string or number proper */
1408 #ifndef NO_FLOATING_POINT
1409 if ((flags & FPT) == 0) {
1410 #endif
1411 /* leading zeroes from decimal precision */
1412 PAD(dprec - size, zeroes);
1413 if (gs.grouping) {
1414 if (grouping_print(&gs, &io, cp, buf+BUF, loc) < 0)
1415 goto error;
1416 } else {
1417 PRINT(cp, size);
1418 }
1419 #ifndef NO_FLOATING_POINT
1420 } else { /* glue together f_p fragments */
1421 if (!expchar) { /* %[fF] or sufficiently short %[gG] */
1422 if (expt <= 0) {
1423 PRINT(zeroes, 1);
1424 if (prec || flags & ALT)
1425 PRINT(&decimal_point, 1);
1426 PAD(-expt, zeroes);
1427 /* already handled initial 0's */
1428 prec += expt;
1429 } else {
1430 if (gs.grouping) {
1431 n = grouping_print(&gs, &io,
1432 cp, convbuf + ndig, loc);
1433 if (n < 0)
1434 goto error;
1435 cp += n;
1436 } else {
1437 PRINTANDPAD(cp, convbuf + ndig,
1438 expt, zeroes);
1439 cp += expt;
1440 }
1441 if (prec || flags & ALT)
1442 PRINT(&decimal_point, 1);
1443 }
1444 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes);
1445 } else { /* %[eE] or sufficiently long %[gG] */
1446 if (prec > 1 || flags & ALT) {
1447 buf[0] = *cp++;
1448 buf[1] = decimal_point;
1449 PRINT(buf, 2);
1450 PRINT(cp, ndig-1);
1451 PAD(prec - ndig, zeroes);
1452 } else /* XeYYY */
1453 PRINT(cp, 1);
1454 PRINT(expstr, expsize);
1455 }
1456 }
1457 #endif
1458 /* left-adjusting padding (always blank) */
1459 if (flags & LADJUST)
1460 PAD(width - realsz, blanks);
1461
1462 /* finally, adjust ret */
1463 ret += prsize;
1464
1465 FLUSH(); /* copy out the I/O vectors */
1466 }
1467 done:
1468 FLUSH();
1469 error:
1470 va_end(orgap);
1471 free(convbuf);
1472 if (__sferror(fp))
1473 ret = EOF;
1474 if ((argtable != NULL) && (argtable != statargtable))
1475 free (argtable);
1476 return (ret < 0 || ret >= INT_MAX) ? -1 : (int)ret;
1477 /* NOTREACHED */
1478 }
mirror of libc