Constify xdigs argument to __u[lj]toa. Cast u_long and u_quad_t to
[dragonfly.git] / lib / libc / stdio / vfprintf.c
CommitLineData
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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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
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35 *
36 * @(#)vfprintf.c 8.1 (Berkeley) 6/4/93
1f9122f2 37 * $FreeBSD: src/lib/libc/stdio/vfprintf.c,v 1.34 2001/12/13 19:45:41 phantom Exp $
dab475e0 38 * $DragonFly: src/lib/libc/stdio/vfprintf.c,v 1.13 2005/08/01 22:50:45 joerg Exp $
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39 */
40
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41/*
42 * Actual printf innards.
43 *
44 * This code is large and complicated...
45 */
46
17ea2221 47#include "namespace.h"
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48#include <sys/types.h>
49
1f9122f2 50#include <ctype.h>
984263bc 51#include <limits.h>
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52#include <locale.h>
53#include <stddef.h>
54#include <stdint.h>
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55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58
984263bc 59#include <stdarg.h>
17ea2221 60#include "un-namespace.h"
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61
62#include "libc_private.h"
63#include "local.h"
55b5af84 64#include "priv_stdio.h"
984263bc 65
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66/* Borrowed from sys/systm.h, which is _KERNEL-only: */
67#define CTASSERT(x) _CTASSERT(x, __LINE__)
68#define _CTASSERT(x, y) __CTASSERT(x, y)
69#define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
70
71/* This code assumes that a quad_t can fit in a long long: */
72CTASSERT(sizeof(quad_t) == sizeof(long long));
73
74union arg {
75 int intarg;
76 unsigned int uintarg;
77 long longarg;
78 unsigned long ulongarg;
79 long long longlongarg;
80 unsigned long long ulonglongarg;
81 ptrdiff_t ptrdiffarg;
82 size_t sizearg;
83 intmax_t intmaxarg;
84 uintmax_t uintmaxarg;
85 void *pvoidarg;
86 char *pchararg;
87 signed char *pschararg;
88 short *pshortarg;
89 int *pintarg;
90 long *plongarg;
91 long long *plonglongarg;
92 ptrdiff_t *pptrdiffarg;
93 size_t *psizearg;
94 intmax_t *pintmaxarg;
36338ba5 95#ifndef NO_FLOATING_POINT
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96 double doublearg;
97 long double longdoublearg;
98#endif
99};
100
101/*
102 * Type ids for argument type table.
103 */
104enum typeid {
105 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT,
106 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG,
107 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET,
108 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR,
109 T_DOUBLE, T_LONG_DOUBLE
110};
111
112static int __sprint(FILE *, struct __suio *);
113static int __sbprintf(FILE *, const char *, va_list) __printflike(2, 0);
dab475e0 114static char * __ujtoa(uintmax_t, char *, int, int, const char *, int,
1f9122f2 115 char, const char *);
dab475e0 116static char * __ultoa(u_long, char *, int, int, const char *, int,
1f9122f2 117 char, const char *);
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118static void __find_arguments(const char *, va_list, union arg **);
119static void __grow_type_table(int, enum typeid **, int *);
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120
121/*
122 * Flush out all the vectors defined by the given uio,
123 * then reset it so that it can be reused.
124 */
125static int
126__sprint(FILE *fp, struct __suio *uio)
127{
128 int err;
129
130 if (uio->uio_resid == 0) {
131 uio->uio_iovcnt = 0;
132 return (0);
133 }
134 err = __sfvwrite(fp, uio);
135 uio->uio_resid = 0;
136 uio->uio_iovcnt = 0;
137 return (err);
138}
139
140/*
141 * Helper function for `fprintf to unbuffered unix file': creates a
142 * temporary buffer. We only work on write-only files; this avoids
143 * worries about ungetc buffers and so forth.
144 */
145static int
146__sbprintf(FILE *fp, const char *fmt, va_list ap)
147{
148 int ret;
149 FILE fake;
150 unsigned char buf[BUFSIZ];
151
152 /* copy the important variables */
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153 fake.pub._flags = fp->pub._flags & ~__SNBF;
154 fake.pub._fileno = fp->pub._fileno;
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155 fake._cookie = fp->_cookie;
156 fake._write = fp->_write;
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157
158 fake._up = fp->_up;
159 fake.fl_mutex = fp->fl_mutex;
160 fake.fl_owner = fp->fl_owner;
161 fake.fl_count = fp->fl_count;
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162
163 /* set up the buffer */
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164 fake._bf._base = fake.pub._p = buf;
165 fake._bf._size = fake.pub._w = sizeof(buf);
166 fake.pub._lbfsize = 0; /* not actually used, but Just In Case */
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167
168 /* do the work, then copy any error status */
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169 ret = __vfprintf(&fake, fmt, ap);
170 if (ret >= 0 && __fflush(&fake))
984263bc 171 ret = EOF;
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172 if (fake.pub._flags & __SERR)
173 fp->pub._flags |= __SERR;
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174 return (ret);
175}
176
177/*
178 * Macros for converting digits to letters and vice versa
179 */
180#define to_digit(c) ((c) - '0')
181#define is_digit(c) ((unsigned)to_digit(c) <= 9)
182#define to_char(n) ((n) + '0')
183
184/*
185 * Convert an unsigned long to ASCII for printf purposes, returning
186 * a pointer to the first character of the string representation.
187 * Octal numbers can be forced to have a leading zero; hex numbers
188 * use the given digits.
189 */
190static char *
dab475e0 191__ultoa(u_long val, char *endp, int base, int octzero, const char *xdigs,
1f9122f2 192 int needgrp, char thousep, const char *grp)
984263bc 193{
32434318
HP
194 char *cp = endp;
195 long sval;
1f9122f2 196 int ndig;
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197
198 /*
199 * Handle the three cases separately, in the hope of getting
200 * better/faster code.
201 */
202 switch (base) {
203 case 10:
204 if (val < 10) { /* many numbers are 1 digit */
205 *--cp = to_char(val);
206 return (cp);
207 }
1f9122f2 208 ndig = 0;
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209 /*
210 * On many machines, unsigned arithmetic is harder than
211 * signed arithmetic, so we do at most one unsigned mod and
212 * divide; this is sufficient to reduce the range of
213 * the incoming value to where signed arithmetic works.
214 */
215 if (val > LONG_MAX) {
216 *--cp = to_char(val % 10);
1f9122f2 217 ndig++;
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218 sval = val / 10;
219 } else
220 sval = val;
221 do {
222 *--cp = to_char(sval % 10);
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223 ndig++;
224 /*
225 * If (*grp == CHAR_MAX) then no more grouping
226 * should be performed.
227 */
228 if (needgrp && ndig == *grp && *grp != CHAR_MAX &&
229 sval > 9) {
230 *--cp = thousep;
231 ndig = 0;
232 /*
233 * If (*(grp+1) == '\0') then we have to
234 * use *grp character (last grouping rule)
235 * for all next cases
236 */
237 if (*(grp + 1) != '\0')
238 grp++;
239 }
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240 sval /= 10;
241 } while (sval != 0);
242 break;
243
244 case 8:
245 do {
246 *--cp = to_char(val & 7);
247 val >>= 3;
248 } while (val);
249 if (octzero && *cp != '0')
250 *--cp = '0';
251 break;
252
253 case 16:
254 do {
dab475e0 255 *--cp = xdigs[(size_t)val & 15];
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256 val >>= 4;
257 } while (val);
258 break;
259
260 default: /* oops */
261 abort();
262 }
263 return (cp);
264}
265
1f9122f2 266/* Identical to __ultoa, but for intmax_t. */
984263bc 267static char *
dab475e0 268__ujtoa(u_quad_t val, char *endp, int base, int octzero, const char *xdigs,
1f9122f2 269 int needgrp, char thousep, const char *grp)
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270{
271 char *cp = endp;
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272 intmax_t sval;
273 int ndig;
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274
275 /* quick test for small values; __ultoa is typically much faster */
276 /* (perhaps instead we should run until small, then call __ultoa?) */
277 if (val <= ULONG_MAX)
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278 return (__ultoa((u_long)val, endp, base, octzero, xdigs,
279 needgrp, thousep, grp));
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280 switch (base) {
281 case 10:
282 if (val < 10) {
283 *--cp = to_char(val % 10);
284 return (cp);
285 }
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286 ndig = 0;
287 if (val > INTMAX_MAX) {
984263bc 288 *--cp = to_char(val % 10);
1f9122f2 289 ndig++;
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290 sval = val / 10;
291 } else
292 sval = val;
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293 do {
294 *--cp = to_char(sval % 10);
295 ndig++;
296 /*
297 * If (*grp == CHAR_MAX) then no more grouping
298 * should be performed.
299 */
300 if (needgrp && *grp != CHAR_MAX && ndig == *grp &&
301 sval > 9) {
302 *--cp = thousep;
303 ndig = 0;
304 /*
305 * If (*(grp+1) == '\0') then we have to
306 * use *grp character (last grouping rule)
307 * for all next cases
308 */
309 if (*(grp + 1) != '\0')
310 grp++;
311 }
312 sval /= 10;
313 } while (sval != 0);
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314 break;
315
316 case 8:
317 do {
318 *--cp = to_char(val & 7);
319 val >>= 3;
320 } while (val);
321 if (octzero && *cp != '0')
322 *--cp = '0';
323 break;
324
325 case 16:
326 do {
dab475e0 327 *--cp = xdigs[(size_t)val & 15];
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328 val >>= 4;
329 } while (val);
330 break;
331
332 default:
333 abort();
334 }
335 return (cp);
336}
337
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338/*
339 * MT-safe version
340 */
341int
342vfprintf(FILE *fp, const char *fmt0, va_list ap)
343{
344 int ret;
345
346 FLOCKFILE(fp);
347 ret = __vfprintf(fp, fmt0, ap);
348 FUNLOCKFILE(fp);
349 return (ret);
350}
351
36338ba5 352#ifndef NO_FLOATING_POINT
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353#include <math.h>
354#include "floatio.h"
355
dab475e0 356#define BUF ((MAXEXPDIG * 2) + MAXFRACT + 1) /* + decimal point */
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357#define DEFPREC 6
358
064e1fb3
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359static char *cvt (double, int, int, char *, int *, int, int *, char **);
360static int exponent (char *, int, int);
984263bc 361
36338ba5 362#else /* no NO_FLOATING_POINT */
984263bc 363
1f9122f2 364#define BUF 136
984263bc 365
36338ba5 366#endif /* NO_FLOATING_POINT */
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367
368#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */
369
370/*
371 * Flags used during conversion.
372 */
373#define ALT 0x001 /* alternate form */
374#define HEXPREFIX 0x002 /* add 0x or 0X prefix */
375#define LADJUST 0x004 /* left adjustment */
376#define LONGDBL 0x008 /* long double */
377#define LONGINT 0x010 /* long integer */
1f9122f2 378#define LLONGINT 0x020 /* long long integer */
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379#define SHORTINT 0x040 /* short integer */
380#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
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381#define FPT 0x100 /* Floating point number */
382#define GROUPING 0x200 /* use grouping ("'" flag) */
383 /* C99 additional size modifiers: */
384#define SIZET 0x400 /* size_t */
385#define PTRDIFFT 0x800 /* ptrdiff_t */
386#define INTMAXT 0x1000 /* intmax_t */
387#define CHARINT 0x2000 /* print char using int format */
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388/*
389 * Non-MT-safe version
390 */
984263bc 391int
17ea2221 392__vfprintf(FILE *fp, const char *fmt0, va_list ap)
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393{
394 char *fmt; /* format string */
395 int ch; /* character from fmt */
396 int n, n2; /* handy integer (short term usage) */
397 char *cp; /* handy char pointer (short term usage) */
398 struct __siov *iovp; /* for PRINT macro */
399 int flags; /* flags as above */
400 int ret; /* return value accumulator */
401 int width; /* width from format (%8d), or 0 */
402 int prec; /* precision from format (%.3d), or -1 */
403 char sign; /* sign prefix (' ', '+', '-', or \0) */
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404 char thousands_sep; /* locale specific thousands separator */
405 const char *grouping; /* locale specific numeric grouping rules */
36338ba5 406#ifndef NO_FLOATING_POINT
32a7b49a 407 const char *decimal_point; /* locale specific decimal point */
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408 char softsign; /* temporary negative sign for floats */
409 double _double; /* double precision arguments %[eEfgG] */
410 int expt; /* integer value of exponent */
411 int expsize; /* character count for expstr */
412 int ndig; /* actual number of digits returned by cvt */
413 char expstr[7]; /* buffer for exponent string */
414 char *dtoaresult; /* buffer allocated by dtoa */
415#endif
416 u_long ulval; /* integer arguments %[diouxX] */
1f9122f2 417 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */
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418 int base; /* base for [diouxX] conversion */
419 int dprec; /* a copy of prec if [diouxX], 0 otherwise */
420 int realsz; /* field size expanded by dprec, sign, etc */
421 int size; /* size of converted field or string */
422 int prsize; /* max size of printed field */
dab475e0 423 const char *xdigs; /* digits for [xX] conversion */
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424#define NIOV 8
425 struct __suio uio; /* output information: summary */
426 struct __siov iov[NIOV];/* ... and individual io vectors */
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CP
427 char buf[BUF]; /* space for %c, %[diouxX], %[eEfFgG] */
428 char ox[2]; /* space for 0x hex-prefix */
429 union arg *argtable; /* args, built due to positional arg */
430 union arg statargtable[STATIC_ARG_TBL_SIZE];
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431 int nextarg; /* 1-based argument index */
432 va_list orgap; /* original argument pointer */
433
434 /*
435 * Choose PADSIZE to trade efficiency vs. size. If larger printf
436 * fields occur frequently, increase PADSIZE and make the initialisers
437 * below longer.
438 */
439#define PADSIZE 16 /* pad chunk size */
440 static char blanks[PADSIZE] =
441 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
442 static char zeroes[PADSIZE] =
443 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
444
445 /*
446 * BEWARE, these `goto error' on error, and PAD uses `n'.
447 */
448#define PRINT(ptr, len) { \
32a7b49a 449 iovp->iov_base = __DECONST(void *, ptr); \
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450 iovp->iov_len = (len); \
451 uio.uio_resid += (len); \
452 iovp++; \
453 if (++uio.uio_iovcnt >= NIOV) { \
454 if (__sprint(fp, &uio)) \
455 goto error; \
456 iovp = iov; \
457 } \
458}
459#define PAD(howmany, with) { \
460 if ((n = (howmany)) > 0) { \
461 while (n > PADSIZE) { \
462 PRINT(with, PADSIZE); \
463 n -= PADSIZE; \
464 } \
465 PRINT(with, n); \
466 } \
467}
468#define FLUSH() { \
469 if (uio.uio_resid && __sprint(fp, &uio)) \
470 goto error; \
471 uio.uio_iovcnt = 0; \
472 iovp = iov; \
473}
474
475 /*
476 * Get the argument indexed by nextarg. If the argument table is
477 * built, use it to get the argument. If its not, get the next
478 * argument (and arguments must be gotten sequentially).
479 */
480#define GETARG(type) \
1f9122f2 481 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
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482 (nextarg++, va_arg(ap, type)))
483
484 /*
485 * To extend shorts properly, we need both signed and unsigned
486 * argument extraction methods.
487 */
488#define SARG() \
489 (flags&LONGINT ? GETARG(long) : \
490 flags&SHORTINT ? (long)(short)GETARG(int) : \
1f9122f2 491 flags&CHARINT ? (long)(signed char)GETARG(int) : \
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492 (long)GETARG(int))
493#define UARG() \
494 (flags&LONGINT ? GETARG(u_long) : \
495 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
1f9122f2 496 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \
984263bc 497 (u_long)GETARG(u_int))
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CP
498#define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT)
499#define SJARG() \
500 (flags&INTMAXT ? GETARG(intmax_t) : \
501 flags&SIZET ? (intmax_t)GETARG(size_t) : \
502 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \
503 (intmax_t)GETARG(long long))
504#define UJARG() \
505 (flags&INTMAXT ? GETARG(uintmax_t) : \
506 flags&SIZET ? (uintmax_t)GETARG(size_t) : \
507 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \
508 (uintmax_t)GETARG(unsigned long long))
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509
510 /*
511 * Get * arguments, including the form *nn$. Preserve the nextarg
512 * that the argument can be gotten once the type is determined.
513 */
514#define GETASTER(val) \
515 n2 = 0; \
516 cp = fmt; \
517 while (is_digit(*cp)) { \
518 n2 = 10 * n2 + to_digit(*cp); \
519 cp++; \
520 } \
521 if (*cp == '$') { \
522 int hold = nextarg; \
523 if (argtable == NULL) { \
524 argtable = statargtable; \
525 __find_arguments (fmt0, orgap, &argtable); \
526 } \
527 nextarg = n2; \
528 val = GETARG (int); \
529 nextarg = hold; \
530 fmt = ++cp; \
531 } else { \
532 val = GETARG (int); \
533 }
984263bc 534
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CP
535
536 thousands_sep = '\0';
537 grouping = NULL;
36338ba5 538#ifndef NO_FLOATING_POINT
984263bc 539 dtoaresult = NULL;
1f9122f2 540 decimal_point = localeconv()->decimal_point;
984263bc 541#endif
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542 /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
543 if (cantwrite(fp)) {
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544 return (EOF);
545 }
546
547 /* optimise fprintf(stderr) (and other unbuffered Unix files) */
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548 if ((fp->pub._flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
549 fp->pub._fileno >= 0) {
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550 return (__sbprintf(fp, fmt0, ap));
551 }
552
553 fmt = (char *)fmt0;
554 argtable = NULL;
555 nextarg = 1;
556 orgap = ap;
557 uio.uio_iov = iovp = iov;
558 uio.uio_resid = 0;
559 uio.uio_iovcnt = 0;
560 ret = 0;
561
562 /*
563 * Scan the format for conversions (`%' character).
564 */
565 for (;;) {
566 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
567 /* void */;
568 if ((n = fmt - cp) != 0) {
569 if ((unsigned)ret + n > INT_MAX) {
570 ret = EOF;
571 goto error;
572 }
573 PRINT(cp, n);
574 ret += n;
575 }
576 if (ch == '\0')
577 goto done;
578 fmt++; /* skip over '%' */
579
580 flags = 0;
581 dprec = 0;
582 width = 0;
583 prec = -1;
584 sign = '\0';
585
586rflag: ch = *fmt++;
587reswitch: switch (ch) {
588 case ' ':
589 /*
590 * ``If the space and + flags both appear, the space
591 * flag will be ignored.''
592 * -- ANSI X3J11
593 */
594 if (!sign)
595 sign = ' ';
596 goto rflag;
597 case '#':
598 flags |= ALT;
599 goto rflag;
600 case '*':
601 /*
602 * ``A negative field width argument is taken as a
603 * - flag followed by a positive field width.''
604 * -- ANSI X3J11
605 * They don't exclude field widths read from args.
606 */
607 GETASTER (width);
608 if (width >= 0)
609 goto rflag;
610 width = -width;
611 /* FALLTHROUGH */
612 case '-':
613 flags |= LADJUST;
614 goto rflag;
615 case '+':
616 sign = '+';
617 goto rflag;
1f9122f2
CP
618 case '\'':
619 flags |= GROUPING;
620 thousands_sep = *(localeconv()->thousands_sep);
621 grouping = localeconv()->grouping;
622 goto rflag;
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623 case '.':
624 if ((ch = *fmt++) == '*') {
625 GETASTER (n);
626 prec = n < 0 ? -1 : n;
627 goto rflag;
628 }
629 n = 0;
630 while (is_digit(ch)) {
631 n = 10 * n + to_digit(ch);
632 ch = *fmt++;
633 }
634 prec = n < 0 ? -1 : n;
635 goto reswitch;
636 case '0':
637 /*
638 * ``Note that 0 is taken as a flag, not as the
639 * beginning of a field width.''
640 * -- ANSI X3J11
641 */
642 flags |= ZEROPAD;
643 goto rflag;
644 case '1': case '2': case '3': case '4':
645 case '5': case '6': case '7': case '8': case '9':
646 n = 0;
647 do {
648 n = 10 * n + to_digit(ch);
649 ch = *fmt++;
650 } while (is_digit(ch));
651 if (ch == '$') {
652 nextarg = n;
653 if (argtable == NULL) {
654 argtable = statargtable;
655 __find_arguments (fmt0, orgap,
656 &argtable);
657 }
658 goto rflag;
659 }
660 width = n;
661 goto reswitch;
36338ba5 662#ifndef NO_FLOATING_POINT
984263bc
MD
663 case 'L':
664 flags |= LONGDBL;
665 goto rflag;
666#endif
667 case 'h':
1f9122f2
CP
668 if (flags & SHORTINT) {
669 flags &= ~SHORTINT;
670 flags |= CHARINT;
671 } else
672 flags |= SHORTINT;
673 goto rflag;
674 case 'j':
675 flags |= INTMAXT;
984263bc
MD
676 goto rflag;
677 case 'l':
1f9122f2
CP
678 if (flags & LONGINT) {
679 flags &= ~LONGINT;
680 flags |= LLONGINT;
681 } else
984263bc
MD
682 flags |= LONGINT;
683 goto rflag;
684 case 'q':
1f9122f2
CP
685 flags |= LLONGINT;
686 goto rflag;
687 case 't':
688 flags |= PTRDIFFT;
689 goto rflag;
690 case 'z':
691 flags |= SIZET;
984263bc
MD
692 goto rflag;
693 case 'c':
694 *(cp = buf) = GETARG(int);
695 size = 1;
696 sign = '\0';
697 break;
698 case 'D':
699 flags |= LONGINT;
700 /*FALLTHROUGH*/
701 case 'd':
702 case 'i':
1f9122f2
CP
703 if (flags & INTMAX_SIZE) {
704 ujval = SJARG();
705 if ((intmax_t)ujval < 0) {
706 ujval = -ujval;
984263bc
MD
707 sign = '-';
708 }
709 } else {
710 ulval = SARG();
711 if ((long)ulval < 0) {
712 ulval = -ulval;
713 sign = '-';
714 }
715 }
716 base = 10;
717 goto number;
36338ba5 718#ifndef NO_FLOATING_POINT
1f9122f2
CP
719#ifdef HEXFLOAT
720 case 'a':
721 case 'A':
722#endif
984263bc
MD
723 case 'e':
724 case 'E':
1f9122f2
CP
725 /*
726 * Grouping apply to %i, %d, %u, %f, %F, %g, %G
727 * conversion specifiers only. For other conversions
728 * behavior is undefined.
729 * -- POSIX
730 */
731 flags &= ~GROUPING;
732 /*FALLTHROUGH*/
984263bc 733 case 'f':
1f9122f2 734 case 'F':
984263bc
MD
735 goto fp_begin;
736 case 'g':
737 case 'G':
738 if (prec == 0)
739 prec = 1;
740fp_begin: if (prec == -1)
741 prec = DEFPREC;
742 if (flags & LONGDBL)
743 /* XXX this loses precision. */
744 _double = (double)GETARG(long double);
745 else
746 _double = GETARG(double);
747 /* do this before tricky precision changes */
748 if (isinf(_double)) {
749 if (_double < 0)
750 sign = '-';
1f9122f2
CP
751 if (isupper(ch))
752 cp = "INF";
753 else
754 cp = "inf";
984263bc
MD
755 size = 3;
756 break;
757 }
758 if (isnan(_double)) {
1f9122f2
CP
759 if (isupper(ch))
760 cp = "NAN";
761 else
762 cp = "nan";
984263bc
MD
763 size = 3;
764 break;
765 }
766 flags |= FPT;
767 if (dtoaresult != NULL) {
768 free(dtoaresult);
769 dtoaresult = NULL;
770 }
771 cp = cvt(_double, prec, flags, &softsign,
772 &expt, ch, &ndig, &dtoaresult);
773 if (ch == 'g' || ch == 'G') {
774 if (expt <= -4 || expt > prec)
775 ch = (ch == 'g') ? 'e' : 'E';
776 else
777 ch = 'g';
778 }
1f9122f2 779 if (ch == 'e' || ch == 'E') {
984263bc
MD
780 --expt;
781 expsize = exponent(expstr, expt, ch);
782 size = expsize + ndig;
783 if (ndig > 1 || flags & ALT)
784 ++size;
1f9122f2 785 } else if (ch == 'f' || ch == 'F') {
984263bc
MD
786 if (expt > 0) {
787 size = expt;
788 if (prec || flags & ALT)
789 size += prec + 1;
790 } else /* "0.X" */
791 size = prec + 2;
792 } else if (expt >= ndig) { /* fixed g fmt */
793 size = expt;
794 if (flags & ALT)
795 ++size;
796 } else
797 size = ndig + (expt > 0 ?
798 1 : 2 - expt);
799
800 if (softsign)
801 sign = '-';
802 break;
36338ba5 803#endif /* NO_FLOATING_POINT */
984263bc 804 case 'n':
1f9122f2
CP
805 /*
806 * Assignment-like behavior is specified if the
807 * value overflows or is otherwise unrepresentable.
808 * C99 says to use `signed char' for %hhn conversions.
809 */
810 if (flags & LLONGINT)
811 *GETARG(long long *) = ret;
812 else if (flags & SIZET)
813 *GETARG(ssize_t *) = (ssize_t)ret;
814 else if (flags & PTRDIFFT)
815 *GETARG(ptrdiff_t *) = ret;
816 else if (flags & INTMAXT)
817 *GETARG(intmax_t *) = ret;
984263bc
MD
818 else if (flags & LONGINT)
819 *GETARG(long *) = ret;
820 else if (flags & SHORTINT)
821 *GETARG(short *) = ret;
1f9122f2
CP
822 else if (flags & CHARINT)
823 *GETARG(signed char *) = ret;
984263bc
MD
824 else
825 *GETARG(int *) = ret;
826 continue; /* no output */
827 case 'O':
828 flags |= LONGINT;
829 /*FALLTHROUGH*/
830 case 'o':
1f9122f2
CP
831 if (flags & INTMAX_SIZE)
832 ujval = UJARG();
984263bc
MD
833 else
834 ulval = UARG();
835 base = 8;
836 goto nosign;
837 case 'p':
838 /*
839 * ``The argument shall be a pointer to void. The
840 * value of the pointer is converted to a sequence
841 * of printable characters, in an implementation-
842 * defined manner.''
843 * -- ANSI X3J11
844 */
1f9122f2 845 ujval = (uintmax_t)(uintptr_t)GETARG(void *);
984263bc
MD
846 base = 16;
847 xdigs = "0123456789abcdef";
1f9122f2 848 flags = flags | INTMAXT | HEXPREFIX;
984263bc
MD
849 ch = 'x';
850 goto nosign;
851 case 's':
852 if ((cp = GETARG(char *)) == NULL)
853 cp = "(null)";
854 if (prec >= 0) {
855 /*
856 * can't use strlen; can only look for the
857 * NUL in the first `prec' characters, and
858 * strlen() will go further.
859 */
860 char *p = memchr(cp, 0, (size_t)prec);
861
862 if (p != NULL) {
863 size = p - cp;
864 if (size > prec)
865 size = prec;
866 } else
867 size = prec;
868 } else
869 size = strlen(cp);
870 sign = '\0';
871 break;
872 case 'U':
873 flags |= LONGINT;
874 /*FALLTHROUGH*/
875 case 'u':
1f9122f2
CP
876 if (flags & INTMAX_SIZE)
877 ujval = UJARG();
984263bc
MD
878 else
879 ulval = UARG();
880 base = 10;
881 goto nosign;
882 case 'X':
883 xdigs = "0123456789ABCDEF";
884 goto hex;
885 case 'x':
886 xdigs = "0123456789abcdef";
1f9122f2
CP
887hex:
888 if (flags & INTMAX_SIZE)
889 ujval = UJARG();
984263bc
MD
890 else
891 ulval = UARG();
892 base = 16;
893 /* leading 0x/X only if non-zero */
894 if (flags & ALT &&
1f9122f2 895 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0))
984263bc
MD
896 flags |= HEXPREFIX;
897
1f9122f2 898 flags &= ~GROUPING;
984263bc
MD
899 /* unsigned conversions */
900nosign: sign = '\0';
901 /*
902 * ``... diouXx conversions ... if a precision is
903 * specified, the 0 flag will be ignored.''
904 * -- ANSI X3J11
905 */
906number: if ((dprec = prec) >= 0)
907 flags &= ~ZEROPAD;
908
909 /*
910 * ``The result of converting a zero value with an
911 * explicit precision of zero is no characters.''
912 * -- ANSI X3J11
913 */
914 cp = buf + BUF;
1f9122f2
CP
915 if (flags & INTMAX_SIZE) {
916 if (ujval != 0 || prec != 0)
917 cp = __ujtoa(ujval, cp, base,
918 flags & ALT, xdigs,
919 flags & GROUPING, thousands_sep,
920 grouping);
921 } else {
922 if (ulval != 0 || prec != 0)
923 cp = __ultoa(ulval, cp, base,
924 flags & ALT, xdigs,
925 flags & GROUPING, thousands_sep,
926 grouping);
927 }
984263bc
MD
928 size = buf + BUF - cp;
929 break;
930 default: /* "%?" prints ?, unless ? is NUL */
931 if (ch == '\0')
932 goto done;
933 /* pretend it was %c with argument ch */
934 cp = buf;
935 *cp = ch;
936 size = 1;
937 sign = '\0';
938 break;
939 }
940
941 /*
942 * All reasonable formats wind up here. At this point, `cp'
943 * points to a string which (if not flags&LADJUST) should be
944 * padded out to `width' places. If flags&ZEROPAD, it should
945 * first be prefixed by any sign or other prefix; otherwise,
946 * it should be blank padded before the prefix is emitted.
947 * After any left-hand padding and prefixing, emit zeroes
948 * required by a decimal [diouxX] precision, then print the
949 * string proper, then emit zeroes required by any leftover
950 * floating precision; finally, if LADJUST, pad with blanks.
951 *
952 * Compute actual size, so we know how much to pad.
953 * size excludes decimal prec; realsz includes it.
954 */
955 realsz = dprec > size ? dprec : size;
956 if (sign)
957 realsz++;
958 else if (flags & HEXPREFIX)
959 realsz += 2;
960
961 prsize = width > realsz ? width : realsz;
962 if ((unsigned)ret + prsize > INT_MAX) {
963 ret = EOF;
964 goto error;
965 }
966
967 /* right-adjusting blank padding */
968 if ((flags & (LADJUST|ZEROPAD)) == 0)
969 PAD(width - realsz, blanks);
970
971 /* prefix */
972 if (sign) {
973 PRINT(&sign, 1);
974 } else if (flags & HEXPREFIX) {
975 ox[0] = '0';
976 ox[1] = ch;
977 PRINT(ox, 2);
978 }
979
980 /* right-adjusting zero padding */
981 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
982 PAD(width - realsz, zeroes);
983
984 /* leading zeroes from decimal precision */
985 PAD(dprec - size, zeroes);
986
987 /* the string or number proper */
36338ba5 988#ifndef NO_FLOATING_POINT
984263bc
MD
989 if ((flags & FPT) == 0) {
990 PRINT(cp, size);
991 } else { /* glue together f_p fragments */
992 if (ch >= 'f') { /* 'f' or 'g' */
993 if (_double == 0) {
994 /* kludge for __dtoa irregularity */
995 PRINT("0", 1);
996 if (expt < ndig || (flags & ALT) != 0) {
997 PRINT(decimal_point, 1);
998 PAD(ndig - 1, zeroes);
999 }
1000 } else if (expt <= 0) {
1001 PRINT("0", 1);
1002 PRINT(decimal_point, 1);
1003 PAD(-expt, zeroes);
1004 PRINT(cp, ndig);
1005 } else if (expt >= ndig) {
1006 PRINT(cp, ndig);
1007 PAD(expt - ndig, zeroes);
1008 if (flags & ALT)
1009 PRINT(decimal_point, 1);
1010 } else {
1011 PRINT(cp, expt);
1012 cp += expt;
1013 PRINT(decimal_point, 1);
1014 PRINT(cp, ndig-expt);
1015 }
1016 } else { /* 'e' or 'E' */
1017 if (ndig > 1 || flags & ALT) {
1018 ox[0] = *cp++;
1019 ox[1] = *decimal_point;
1020 PRINT(ox, 2);
1021 if (_double) {
1022 PRINT(cp, ndig-1);
1023 } else /* 0.[0..] */
1024 /* __dtoa irregularity */
1025 PAD(ndig - 1, zeroes);
1026 } else /* XeYYY */
1027 PRINT(cp, 1);
1028 PRINT(expstr, expsize);
1029 }
1030 }
1031#else
1032 PRINT(cp, size);
1033#endif
1034 /* left-adjusting padding (always blank) */
1035 if (flags & LADJUST)
1036 PAD(width - realsz, blanks);
1037
1038 /* finally, adjust ret */
1039 ret += prsize;
1040
1041 FLUSH(); /* copy out the I/O vectors */
1042 }
1043done:
1044 FLUSH();
1045error:
36338ba5 1046#ifndef NO_FLOATING_POINT
984263bc
MD
1047 if (dtoaresult != NULL)
1048 free(dtoaresult);
1049#endif
1050 if (__sferror(fp))
1051 ret = EOF;
984263bc
MD
1052 if ((argtable != NULL) && (argtable != statargtable))
1053 free (argtable);
1054 return (ret);
1055 /* NOTREACHED */
1056}
1057
984263bc
MD
1058/*
1059 * Find all arguments when a positional parameter is encountered. Returns a
1060 * table, indexed by argument number, of pointers to each arguments. The
1061 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
1062 * It will be replaces with a malloc-ed one if it overflows.
1063 */
1064static void
1f9122f2 1065__find_arguments (const char *fmt0, va_list ap, union arg **argtable)
984263bc
MD
1066{
1067 char *fmt; /* format string */
1068 int ch; /* character from fmt */
1069 int n, n2; /* handy integer (short term usage) */
1070 char *cp; /* handy char pointer (short term usage) */
1071 int flags; /* flags as above */
1072 int width; /* width from format (%8d), or 0 */
1f9122f2
CP
1073 enum typeid *typetable; /* table of types */
1074 enum typeid stattypetable[STATIC_ARG_TBL_SIZE];
984263bc
MD
1075 int tablesize; /* current size of type table */
1076 int tablemax; /* largest used index in table */
1077 int nextarg; /* 1-based argument index */
1078
1079 /*
1080 * Add an argument type to the table, expanding if necessary.
1081 */
1082#define ADDTYPE(type) \
1083 ((nextarg >= tablesize) ? \
1084 __grow_type_table(nextarg, &typetable, &tablesize) : 0, \
1085 (nextarg > tablemax) ? tablemax = nextarg : 0, \
1086 typetable[nextarg++] = type)
1087
1088#define ADDSARG() \
1f9122f2
CP
1089 ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \
1090 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \
1091 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \
1092 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \
1093 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT))))))
984263bc
MD
1094
1095#define ADDUARG() \
1f9122f2
CP
1096 ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \
1097 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \
1098 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \
1099 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \
1100 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT))))))
984263bc
MD
1101
1102 /*
1103 * Add * arguments to the type array.
1104 */
1105#define ADDASTER() \
1106 n2 = 0; \
1107 cp = fmt; \
1108 while (is_digit(*cp)) { \
1109 n2 = 10 * n2 + to_digit(*cp); \
1110 cp++; \
1111 } \
1112 if (*cp == '$') { \
1113 int hold = nextarg; \
1114 nextarg = n2; \
1115 ADDTYPE (T_INT); \
1116 nextarg = hold; \
1117 fmt = ++cp; \
1118 } else { \
1119 ADDTYPE (T_INT); \
1120 }
1121 fmt = (char *)fmt0;
1122 typetable = stattypetable;
1123 tablesize = STATIC_ARG_TBL_SIZE;
1124 tablemax = 0;
1125 nextarg = 1;
1126 memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE);
1127
1128 /*
1129 * Scan the format for conversions (`%' character).
1130 */
1131 for (;;) {
1132 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
1133 /* void */;
1134 if (ch == '\0')
1135 goto done;
1136 fmt++; /* skip over '%' */
1137
1138 flags = 0;
1139 width = 0;
1140
1141rflag: ch = *fmt++;
1142reswitch: switch (ch) {
1143 case ' ':
1144 case '#':
1145 goto rflag;
1146 case '*':
1147 ADDASTER ();
1148 goto rflag;
1149 case '-':
1150 case '+':
1f9122f2 1151 case '\'':
984263bc
MD
1152 goto rflag;
1153 case '.':
1154 if ((ch = *fmt++) == '*') {
1155 ADDASTER ();
1156 goto rflag;
1157 }
1158 while (is_digit(ch)) {
1159 ch = *fmt++;
1160 }
1161 goto reswitch;
1162 case '0':
1163 goto rflag;
1164 case '1': case '2': case '3': case '4':
1165 case '5': case '6': case '7': case '8': case '9':
1166 n = 0;
1167 do {
1168 n = 10 * n + to_digit(ch);
1169 ch = *fmt++;
1170 } while (is_digit(ch));
1171 if (ch == '$') {
1172 nextarg = n;
1173 goto rflag;
1174 }
1175 width = n;
1176 goto reswitch;
36338ba5 1177#ifndef NO_FLOATING_POINT
984263bc
MD
1178 case 'L':
1179 flags |= LONGDBL;
1180 goto rflag;
1181#endif
1f9122f2
CP
1182 case 'h':
1183 if (flags & SHORTINT) {
1184 flags &= ~SHORTINT;
1185 flags |= CHARINT;
1186 } else
1187 flags |= SHORTINT;
984263bc 1188 goto rflag;
1f9122f2
CP
1189 case 'j':
1190 flags |= INTMAXT;
984263bc 1191 goto rflag;
1f9122f2
CP
1192 case 'l':
1193 if (flags & LONGINT) {
1194 flags &= ~LONGINT;
1195 flags |= LLONGINT;
1196 } else
1197 flags |= LONGINT;
1198 goto rflag;
1199 case 'q':
1200 flags |= LLONGINT;
984263bc 1201 goto rflag;
1f9122f2
CP
1202 case 't':
1203 flags |= PTRDIFFT;
1204 goto rflag;
1205 case 'z':
1206 flags |= SIZET;
1207 goto rflag;
984263bc
MD
1208 case 'c':
1209 ADDTYPE(T_INT);
1210 break;
1211 case 'D':
1212 flags |= LONGINT;
1213 /*FALLTHROUGH*/
1214 case 'd':
1f9122f2
CP
1215 case 'i':
1216 ADDSARG();
1217 break;
36338ba5 1218#ifndef NO_FLOATING_POINT
1f9122f2
CP
1219#ifdef HEXFLOAT
1220 case 'a':
1221 case 'A':
1222#endif
984263bc
MD
1223 case 'e':
1224 case 'E':
1225 case 'f':
1226 case 'g':
1227 case 'G':
1228 if (flags & LONGDBL)
1229 ADDTYPE(T_LONG_DOUBLE);
1230 else
1231 ADDTYPE(T_DOUBLE);
1232 break;
36338ba5 1233#endif /* NO_FLOATING_POINT */
984263bc 1234 case 'n':
1f9122f2
CP
1235 if (flags & INTMAXT)
1236 ADDTYPE(TP_INTMAXT);
1237 else if (flags & PTRDIFFT)
1238 ADDTYPE(TP_PTRDIFFT);
1239 else if (flags & SIZET)
1240 ADDTYPE(TP_SIZET);
1241 else if (flags & LLONGINT)
1242 ADDTYPE(TP_LLONG);
984263bc
MD
1243 else if (flags & LONGINT)
1244 ADDTYPE(TP_LONG);
1245 else if (flags & SHORTINT)
1246 ADDTYPE(TP_SHORT);
1f9122f2
CP
1247 else if (flags & CHARINT)
1248 ADDTYPE(TP_SCHAR);
984263bc
MD
1249 else
1250 ADDTYPE(TP_INT);
1251 continue; /* no output */
1252 case 'O':
1253 flags |= LONGINT;
1254 /*FALLTHROUGH*/
1255 case 'o':
1f9122f2 1256 ADDUARG();
984263bc
MD
1257 break;
1258 case 'p':
1259 ADDTYPE(TP_VOID);
1260 break;
1261 case 's':
1262 ADDTYPE(TP_CHAR);
1263 break;
1264 case 'U':
1265 flags |= LONGINT;
1266 /*FALLTHROUGH*/
1f9122f2
CP
1267 case 'u':
1268 case 'X':
1269 case 'x':
1270 ADDUARG();
1271 break;
984263bc
MD
1272 default: /* "%?" prints ?, unless ? is NUL */
1273 if (ch == '\0')
1274 goto done;
1275 break;
1276 }
1277 }
1278done:
1279 /*
1280 * Build the argument table.
1281 */
1282 if (tablemax >= STATIC_ARG_TBL_SIZE) {
1f9122f2
CP
1283 *argtable = (union arg *)
1284 malloc(sizeof(union arg) * (tablemax + 1));
984263bc 1285 }
1f9122f2 1286 (*argtable)[0].intarg = 0;
984263bc
MD
1287 for (n = 1; n <= tablemax; n++) {
1288 switch (typetable [n]) {
1f9122f2
CP
1289 case T_UNUSED: /* "whoops" */
1290 case T_INT:
1291 (*argtable)[n].intarg = va_arg(ap, int);
984263bc 1292 break;
1f9122f2
CP
1293 case TP_SCHAR:
1294 (*argtable) [n].pschararg = va_arg (ap, signed char *);
984263bc 1295 case TP_SHORT:
1f9122f2 1296 (*argtable)[n].pshortarg = va_arg(ap, short *);
984263bc
MD
1297 break;
1298 case T_U_INT:
1f9122f2 1299 (*argtable)[n].uintarg = va_arg(ap, unsigned int);
984263bc
MD
1300 break;
1301 case TP_INT:
1f9122f2 1302 (*argtable)[n].pintarg = va_arg(ap, int *);
984263bc
MD
1303 break;
1304 case T_LONG:
1f9122f2 1305 (*argtable)[n].longarg = va_arg(ap, long);
984263bc
MD
1306 break;
1307 case T_U_LONG:
1f9122f2 1308 (*argtable)[n].ulongarg = va_arg(ap, unsigned long);
984263bc
MD
1309 break;
1310 case TP_LONG:
1f9122f2
CP
1311 (*argtable)[n].plongarg = va_arg(ap, long *);
1312 break;
1313 case T_LLONG:
1314 (*argtable)[n].longlongarg = va_arg(ap, long long);
1315 break;
1316 case T_U_LLONG:
1317 (*argtable)[n].ulonglongarg = va_arg(ap, unsigned long long);
1318 break;
1319 case TP_LLONG:
1320 (*argtable)[n].plonglongarg = va_arg(ap, long long *);
1321 break;
1322 case T_PTRDIFFT:
1323 (*argtable)[n].ptrdiffarg = va_arg(ap, ptrdiff_t);
1324 break;
1325 case TP_PTRDIFFT:
1326 (*argtable)[n].pptrdiffarg = va_arg(ap, ptrdiff_t *);
1327 break;
1328 case T_SIZET:
1329 (*argtable)[n].sizearg = va_arg(ap, size_t);
984263bc 1330 break;
1f9122f2
CP
1331 case TP_SIZET:
1332 (*argtable)[n].psizearg = va_arg(ap, ssize_t *);
984263bc 1333 break;
1f9122f2
CP
1334 case T_INTMAXT:
1335 (*argtable)[n].intmaxarg = va_arg(ap, intmax_t);
1336 break;
1337 case T_UINTMAXT:
1338 (*argtable)[n].uintmaxarg = va_arg(ap, uintmax_t);
984263bc 1339 break;
1f9122f2
CP
1340 case TP_INTMAXT:
1341 (*argtable)[n].pintmaxarg = va_arg (ap, intmax_t *);
984263bc
MD
1342 break;
1343 case T_DOUBLE:
1f9122f2 1344 (*argtable)[n].doublearg = va_arg(ap, double);
984263bc
MD
1345 break;
1346 case T_LONG_DOUBLE:
1f9122f2 1347 (*argtable)[n].longdoublearg = va_arg(ap, long double);
984263bc
MD
1348 break;
1349 case TP_CHAR:
1f9122f2 1350 (*argtable)[n].pchararg = va_arg(ap, char *);
984263bc
MD
1351 break;
1352 case TP_VOID:
1f9122f2 1353 (*argtable)[n].pvoidarg = va_arg(ap, void *);
984263bc
MD
1354 break;
1355 }
1356 }
1357
1358 if ((typetable != NULL) && (typetable != stattypetable))
1359 free (typetable);
1360}
1361
1362/*
1363 * Increase the size of the type table.
1364 */
1365static void
1f9122f2 1366__grow_type_table(int nextarg, enum typeid **typetable, int *tablesize)
984263bc 1367{
1f9122f2 1368 enum typeid * const oldtable = *typetable;
984263bc 1369 const int oldsize = *tablesize;
1f9122f2 1370 enum typeid *newtable;
984263bc
MD
1371 int newsize = oldsize * 2;
1372
1373 if (newsize < nextarg + 1)
1374 newsize = nextarg + 1;
1375 if (oldsize == STATIC_ARG_TBL_SIZE) {
1376 if ((newtable = malloc(newsize)) == NULL)
1377 abort(); /* XXX handle better */
1378 bcopy(oldtable, newtable, oldsize);
1379 } else {
1380 if ((newtable = reallocf(oldtable, newsize)) == NULL)
1381 abort(); /* XXX handle better */
1382 }
1383 memset(&newtable[oldsize], T_UNUSED, newsize - oldsize);
1384
1385 *typetable = newtable;
1386 *tablesize = newsize;
1387}
1388
1389
36338ba5 1390#ifndef NO_FLOATING_POINT
984263bc 1391
064e1fb3 1392extern char *__dtoa (double, int, int, int *, int *, char **, char **);
984263bc
MD
1393
1394static char *
1395cvt(double value, int ndigits, int flags, char *sign, int *decpt,
1396 int ch, int *length, char **dtoaresultp)
1397{
1398 int mode, dsgn;
1399 char *digits, *bp, *rve;
1400
1401 if (ch == 'f')
1402 mode = 3; /* ndigits after the decimal point */
1403 else {
1404 /*
1405 * To obtain ndigits after the decimal point for the 'e'
1406 * and 'E' formats, round to ndigits + 1 significant
1407 * figures.
1408 */
1409 if (ch == 'e' || ch == 'E')
1410 ndigits++;
1411 mode = 2; /* ndigits significant digits */
1412 }
1413 digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve, dtoaresultp);
1414 *sign = dsgn != 0;
1415 if ((ch != 'g' && ch != 'G') || flags & ALT) {
1416 /* print trailing zeros */
1417 bp = digits + ndigits;
1418 if (ch == 'f') {
1419 if (*digits == '0' && value)
1420 *decpt = -ndigits + 1;
1421 bp += *decpt;
1422 }
1423 if (value == 0) /* kludge for __dtoa irregularity */
1424 rve = bp;
1425 while (rve < bp)
1426 *rve++ = '0';
1427 }
1428 *length = rve - digits;
1429 return (digits);
1430}
1431
1432static int
dab475e0 1433exponent(char *p0, int expo, int fmtch)
984263bc
MD
1434{
1435 char *p, *t;
dab475e0 1436 char expbuf[MAXEXPDIG];
984263bc
MD
1437
1438 p = p0;
1439 *p++ = fmtch;
dab475e0
JS
1440 if (expo < 0) {
1441 expo = -expo;
984263bc
MD
1442 *p++ = '-';
1443 }
1444 else
1445 *p++ = '+';
dab475e0
JS
1446 t = expbuf + MAXEXPDIG;
1447 if (expo > 9) {
984263bc 1448 do {
dab475e0
JS
1449 *--t = to_char(expo % 10);
1450 } while ((expo /= 10) > 9);
1451 *--t = to_char(expo);
1452 for (; t < expbuf + MAXEXPDIG; *p++ = *t++);
984263bc
MD
1453 }
1454 else {
1455 *p++ = '0';
dab475e0 1456 *p++ = to_char(expo);
984263bc
MD
1457 }
1458 return (p - p0);
1459}
36338ba5 1460#endif /* NO_FLOATING_POINT */