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printf-pos.c (180102) printf-pos.c (180104)
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

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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
35#endif /* LIBC_SCCS and not lint */
36#include <sys/cdefs.h>
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

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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#if defined(LIBC_SCCS) && !defined(lint)
34static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
35#endif /* LIBC_SCCS and not lint */
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: head/lib/libc/stdio/vfprintf.c 180102 2008-06-29 21:01:27Z das $");
37__FBSDID("$FreeBSD: head/lib/libc/stdio/printf-pos.c 180104 2008-06-29 21:52:40Z das $");
38
39/*
38
39/*
40 * Actual printf innards.
41 *
42 * This code is large and complicated...
40 * This is the code responsible for handling positional arguments
41 * (%m$ and %m$.n$) for vfprintf() and vfwprintf().
43 */
44
45#include "namespace.h"
46#include <sys/types.h>
47
48#include <ctype.h>
49#include <limits.h>
50#include <locale.h>

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57#include <printf.h>
58
59#include <stdarg.h>
60#include "un-namespace.h"
61
62#include "libc_private.h"
63#include "local.h"
64#include "fvwrite.h"
42 */
43
44#include "namespace.h"
45#include <sys/types.h>
46
47#include <ctype.h>
48#include <limits.h>
49#include <locale.h>

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56#include <printf.h>
57
58#include <stdarg.h>
59#include "un-namespace.h"
60
61#include "libc_private.h"
62#include "local.h"
63#include "fvwrite.h"
64#include "printflocal.h"
65
65
66union arg {
67 int intarg;
68 u_int uintarg;
69 long longarg;
70 u_long ulongarg;
71 long long longlongarg;
72 unsigned long long ulonglongarg;
73 ptrdiff_t ptrdiffarg;
74 size_t sizearg;
75 intmax_t intmaxarg;
76 uintmax_t uintmaxarg;
77 void *pvoidarg;
78 char *pchararg;
79 signed char *pschararg;
80 short *pshortarg;
81 int *pintarg;
82 long *plongarg;
83 long long *plonglongarg;
84 ptrdiff_t *pptrdiffarg;
85 size_t *psizearg;
86 intmax_t *pintmaxarg;
87#ifndef NO_FLOATING_POINT
88 double doublearg;
89 long double longdoublearg;
90#endif
91 wint_t wintarg;
92 wchar_t *pwchararg;
93};
94
95/*
96 * Type ids for argument type table.
97 */
98enum typeid {
99 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT,
100 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG,
101 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET,
102 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR,
103 T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR
104};
105
66/*
67 * Type ids for argument type table.
68 */
69enum typeid {
70 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT,
71 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG,
72 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET,
73 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR,
74 T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR
75};
76
106#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */
107
108/* An expandable array of types. */
109struct typetable {
110 enum typeid *table; /* table of types */
111 enum typeid stattable[STATIC_ARG_TBL_SIZE];
112 int tablesize; /* current size of type table */
113 int tablemax; /* largest used index in table */
114 int nextarg; /* 1-based argument index */
115};
116
77/* An expandable array of types. */
78struct typetable {
79 enum typeid *table; /* table of types */
80 enum typeid stattable[STATIC_ARG_TBL_SIZE];
81 int tablesize; /* current size of type table */
82 int tablemax; /* largest used index in table */
83 int nextarg; /* 1-based argument index */
84};
85
117static int __sprint(FILE *, struct __suio *);
118static int __sbprintf(FILE *, const char *, va_list) __printflike(2, 0);
119static char *__ujtoa(uintmax_t, char *, int, int, const char *, int, char,
120 const char *);
121static char *__ultoa(u_long, char *, int, int, const char *, int, char,
122 const char *);
123static char *__wcsconv(wchar_t *, int);
124static void __find_arguments(const char *, va_list, union arg **);
125static void __grow_type_table(struct typetable *);
126
127/*
86static void __grow_type_table(struct typetable *);
87
88/*
128 * Flush out all the vectors defined by the given uio,
129 * then reset it so that it can be reused.
89 * Initialize a struct typetable.
130 */
90 */
131static int
132__sprint(FILE *fp, struct __suio *uio)
91static inline void
92inittypes(struct typetable *types)
133{
93{
134 int err;
94 int n;
135
95
136 if (uio->uio_resid == 0) {
137 uio->uio_iovcnt = 0;
138 return (0);
139 }
140 err = __sfvwrite(fp, uio);
141 uio->uio_resid = 0;
142 uio->uio_iovcnt = 0;
143 return (err);
96 types->table = types->stattable;
97 types->tablesize = STATIC_ARG_TBL_SIZE;
98 types->tablemax = 0;
99 types->nextarg = 1;
100 for (n = 0; n < STATIC_ARG_TBL_SIZE; n++)
101 types->table[n] = T_UNUSED;
144}
145
146/*
102}
103
104/*
147 * Helper function for `fprintf to unbuffered unix file': creates a
148 * temporary buffer. We only work on write-only files; this avoids
149 * worries about ungetc buffers and so forth.
150 */
151static int
152__sbprintf(FILE *fp, const char *fmt, va_list ap)
105 * struct typetable destructor.
106 */
107static inline void
108freetypes(struct typetable *types)
153{
109{
154 int ret;
155 FILE fake;
156 unsigned char buf[BUFSIZ];
157
110
158 /* copy the important variables */
159 fake._flags = fp->_flags & ~__SNBF;
160 fake._file = fp->_file;
161 fake._cookie = fp->_cookie;
162 fake._write = fp->_write;
163 fake._orientation = fp->_orientation;
164 fake._mbstate = fp->_mbstate;
165
166 /* set up the buffer */
167 fake._bf._base = fake._p = buf;
168 fake._bf._size = fake._w = sizeof(buf);
169 fake._lbfsize = 0; /* not actually used, but Just In Case */
170
171 /* do the work, then copy any error status */
172 ret = __vfprintf(&fake, fmt, ap);
173 if (ret >= 0 && __fflush(&fake))
174 ret = EOF;
175 if (fake._flags & __SERR)
176 fp->_flags |= __SERR;
177 return (ret);
111 if (types->table != types->stattable)
112 free (types->table);
178}
179
180/*
113}
114
115/*
181 * Macros for converting digits to letters and vice versa
116 * Add an argument type to the table, expanding if necessary.
182 */
117 */
183#define to_digit(c) ((c) - '0')
184#define is_digit(c) ((unsigned)to_digit(c) <= 9)
185#define to_char(n) ((n) + '0')
186
187/*
188 * Convert an unsigned long to ASCII for printf purposes, returning
189 * a pointer to the first character of the string representation.
190 * Octal numbers can be forced to have a leading zero; hex numbers
191 * use the given digits.
192 */
193static char *
194__ultoa(u_long val, char *endp, int base, int octzero, const char *xdigs,
195 int needgrp, char thousep, const char *grp)
118static inline void
119addtype(struct typetable *types, enum typeid type)
196{
120{
197 char *cp = endp;
198 long sval;
199 int ndig;
200
121
201 /*
202 * Handle the three cases separately, in the hope of getting
203 * better/faster code.
204 */
205 switch (base) {
206 case 10:
207 if (val < 10) { /* many numbers are 1 digit */
208 *--cp = to_char(val);
209 return (cp);
210 }
211 ndig = 0;
212 /*
213 * On many machines, unsigned arithmetic is harder than
214 * signed arithmetic, so we do at most one unsigned mod and
215 * divide; this is sufficient to reduce the range of
216 * the incoming value to where signed arithmetic works.
217 */
218 if (val > LONG_MAX) {
219 *--cp = to_char(val % 10);
220 ndig++;
221 sval = val / 10;
222 } else
223 sval = val;
224 do {
225 *--cp = to_char(sval % 10);
226 ndig++;
227 /*
228 * If (*grp == CHAR_MAX) then no more grouping
229 * should be performed.
230 */
231 if (needgrp && ndig == *grp && *grp != CHAR_MAX
232 && sval > 9) {
233 *--cp = thousep;
234 ndig = 0;
235 /*
236 * If (*(grp+1) == '\0') then we have to
237 * use *grp character (last grouping rule)
238 * for all next cases
239 */
240 if (*(grp+1) != '\0')
241 grp++;
242 }
243 sval /= 10;
244 } while (sval != 0);
245 break;
122 if (types->nextarg >= types->tablesize)
123 __grow_type_table(types);
124 if (types->nextarg > types->tablemax)
125 types->tablemax = types->nextarg;
126 types->table[types->nextarg++] = type;
127}
246
128
247 case 8:
248 do {
249 *--cp = to_char(val & 7);
250 val >>= 3;
251 } while (val);
252 if (octzero && *cp != '0')
253 *--cp = '0';
254 break;
129static inline void
130addsarg(struct typetable *types, int flags)
131{
255
132
256 case 16:
257 do {
258 *--cp = xdigs[val & 15];
259 val >>= 4;
260 } while (val);
261 break;
262
263 default: /* oops */
264 abort();
265 }
266 return (cp);
133 if (flags & INTMAXT)
134 addtype(types, T_INTMAXT);
135 else if (flags & SIZET)
136 addtype(types, T_SIZET);
137 else if (flags & PTRDIFFT)
138 addtype(types, T_PTRDIFFT);
139 else if (flags & LLONGINT)
140 addtype(types, T_LLONG);
141 else if (flags & LONGINT)
142 addtype(types, T_LONG);
143 else
144 addtype(types, T_INT);
267}
268
145}
146
269/* Identical to __ultoa, but for intmax_t. */
270static char *
271__ujtoa(uintmax_t val, char *endp, int base, int octzero, const char *xdigs,
272 int needgrp, char thousep, const char *grp)
147static inline void
148adduarg(struct typetable *types, int flags)
273{
149{
274 char *cp = endp;
275 intmax_t sval;
276 int ndig;
277
150
278 /* quick test for small values; __ultoa is typically much faster */
279 /* (perhaps instead we should run until small, then call __ultoa?) */
280 if (val <= ULONG_MAX)
281 return (__ultoa((u_long)val, endp, base, octzero, xdigs,
282 needgrp, thousep, grp));
283 switch (base) {
284 case 10:
285 if (val < 10) {
286 *--cp = to_char(val % 10);
287 return (cp);
288 }
289 ndig = 0;
290 if (val > INTMAX_MAX) {
291 *--cp = to_char(val % 10);
292 ndig++;
293 sval = val / 10;
294 } else
295 sval = val;
296 do {
297 *--cp = to_char(sval % 10);
298 ndig++;
299 /*
300 * If (*grp == CHAR_MAX) then no more grouping
301 * should be performed.
302 */
303 if (needgrp && *grp != CHAR_MAX && ndig == *grp
304 && sval > 9) {
305 *--cp = thousep;
306 ndig = 0;
307 /*
308 * If (*(grp+1) == '\0') then we have to
309 * use *grp character (last grouping rule)
310 * for all next cases
311 */
312 if (*(grp+1) != '\0')
313 grp++;
314 }
315 sval /= 10;
316 } while (sval != 0);
317 break;
318
319 case 8:
320 do {
321 *--cp = to_char(val & 7);
322 val >>= 3;
323 } while (val);
324 if (octzero && *cp != '0')
325 *--cp = '0';
326 break;
327
328 case 16:
329 do {
330 *--cp = xdigs[val & 15];
331 val >>= 4;
332 } while (val);
333 break;
334
335 default:
336 abort();
337 }
338 return (cp);
151 if (flags & INTMAXT)
152 addtype(types, T_UINTMAXT);
153 else if (flags & SIZET)
154 addtype(types, T_SIZET);
155 else if (flags & PTRDIFFT)
156 addtype(types, T_PTRDIFFT);
157 else if (flags & LLONGINT)
158 addtype(types, T_U_LLONG);
159 else if (flags & LONGINT)
160 addtype(types, T_U_LONG);
161 else
162 addtype(types, T_U_INT);
339}
340
341/*
163}
164
165/*
342 * Convert a wide character string argument for the %ls format to a multibyte
343 * string representation. If not -1, prec specifies the maximum number of
344 * bytes to output, and also means that we can't assume that the wide char.
345 * string ends is null-terminated.
166 * Add * arguments to the type array.
346 */
167 */
347static char *
348__wcsconv(wchar_t *wcsarg, int prec)
168static inline void
169addaster(struct typetable *types, char **fmtp)
349{
170{
350 static const mbstate_t initial;
351 mbstate_t mbs;
352 char buf[MB_LEN_MAX];
353 wchar_t *p;
354 char *convbuf;
355 size_t clen, nbytes;
171 char *cp;
172 int n2;
356
173
357 /* Allocate space for the maximum number of bytes we could output. */
358 if (prec < 0) {
359 p = wcsarg;
360 mbs = initial;
361 nbytes = wcsrtombs(NULL, (const wchar_t **)&p, 0, &mbs);
362 if (nbytes == (size_t)-1)
363 return (NULL);
174 n2 = 0;
175 cp = *fmtp;
176 while (is_digit(*cp)) {
177 n2 = 10 * n2 + to_digit(*cp);
178 cp++;
179 }
180 if (*cp == '$') {
181 int hold = types->nextarg;
182 types->nextarg = n2;
183 addtype(types, T_INT);
184 types->nextarg = hold;
185 *fmtp = ++cp;
364 } else {
186 } else {
365 /*
366 * Optimisation: if the output precision is small enough,
367 * just allocate enough memory for the maximum instead of
368 * scanning the string.
369 */
370 if (prec < 128)
371 nbytes = prec;
372 else {
373 nbytes = 0;
374 p = wcsarg;
375 mbs = initial;
376 for (;;) {
377 clen = wcrtomb(buf, *p++, &mbs);
378 if (clen == 0 || clen == (size_t)-1 ||
379 nbytes + clen > prec)
380 break;
381 nbytes += clen;
382 }
383 }
187 addtype(types, T_INT);
384 }
188 }
385 if ((convbuf = malloc(nbytes + 1)) == NULL)
386 return (NULL);
387
388 /* Fill the output buffer. */
389 p = wcsarg;
390 mbs = initial;
391 if ((nbytes = wcsrtombs(convbuf, (const wchar_t **)&p,
392 nbytes, &mbs)) == (size_t)-1) {
393 free(convbuf);
394 return (NULL);
395 }
396 convbuf[nbytes] = '\0';
397 return (convbuf);
398}
399
189}
190
400/*
401 * MT-safe version
402 */
403int
404vfprintf(FILE * __restrict fp, const char * __restrict fmt0, va_list ap)
405
191static inline void
192addwaster(struct typetable *types, wchar_t **fmtp)
406{
193{
407 int ret;
194 wchar_t *cp;
195 int n2;
408
196
409 FLOCKFILE(fp);
410 ret = __vfprintf(fp, fmt0, ap);
411 FUNLOCKFILE(fp);
412 return (ret);
197 n2 = 0;
198 cp = *fmtp;
199 while (is_digit(*cp)) {
200 n2 = 10 * n2 + to_digit(*cp);
201 cp++;
202 }
203 if (*cp == '$') {
204 int hold = types->nextarg;
205 types->nextarg = n2;
206 addtype(types, T_INT);
207 types->nextarg = hold;
208 *fmtp = ++cp;
209 } else {
210 addtype(types, T_INT);
211 }
413}
414
212}
213
415#ifndef NO_FLOATING_POINT
416
417#define dtoa __dtoa
418#define freedtoa __freedtoa
419
420#include <float.h>
421#include <math.h>
422#include "floatio.h"
423#include "gdtoa.h"
424
425#define DEFPREC 6
426
427static int exponent(char *, int, int);
428
429#endif /* !NO_FLOATING_POINT */
430
431/*
214/*
432 * The size of the buffer we use as scratch space for integer
433 * conversions, among other things. Technically, we would need the
434 * most space for base 10 conversions with thousands' grouping
435 * characters between each pair of digits. 100 bytes is a
436 * conservative overestimate even for a 128-bit uintmax_t.
437 */
438#define BUF 100
439
440/*
441 * Flags used during conversion.
442 */
443#define ALT 0x001 /* alternate form */
444#define LADJUST 0x004 /* left adjustment */
445#define LONGDBL 0x008 /* long double */
446#define LONGINT 0x010 /* long integer */
447#define LLONGINT 0x020 /* long long integer */
448#define SHORTINT 0x040 /* short integer */
449#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
450#define FPT 0x100 /* Floating point number */
451#define GROUPING 0x200 /* use grouping ("'" flag) */
452 /* C99 additional size modifiers: */
453#define SIZET 0x400 /* size_t */
454#define PTRDIFFT 0x800 /* ptrdiff_t */
455#define INTMAXT 0x1000 /* intmax_t */
456#define CHARINT 0x2000 /* print char using int format */
457
458/*
459 * Non-MT-safe version
460 */
461int
462__vfprintf(FILE *fp, const char *fmt0, va_list ap)
215 * Find all arguments when a positional parameter is encountered. Returns a
216 * table, indexed by argument number, of pointers to each arguments. The
217 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
218 * It will be replaces with a malloc-ed one if it overflows.
219 */
220void
221__find_arguments (const char *fmt0, va_list ap, union arg **argtable)
463{
464 char *fmt; /* format string */
465 int ch; /* character from fmt */
222{
223 char *fmt; /* format string */
224 int ch; /* character from fmt */
466 int n, n2; /* handy integer (short term usage) */
467 char *cp; /* handy char pointer (short term usage) */
468 struct __siov *iovp; /* for PRINT macro */
225 int n; /* handy integer (short term usage) */
469 int flags; /* flags as above */
226 int flags; /* flags as above */
470 int ret; /* return value accumulator */
471 int width; /* width from format (%8d), or 0 */
227 int width; /* width from format (%8d), or 0 */
472 int prec; /* precision from format; <0 for N/A */
473 char sign; /* sign prefix (' ', '+', '-', or \0) */
474 char thousands_sep; /* locale specific thousands separator */
475 const char *grouping; /* locale specific numeric grouping rules */
228 struct typetable types; /* table of types */
476
229
477 if (__use_xprintf == 0 && getenv("USE_XPRINTF"))
478 __use_xprintf = 1;
479 if (__use_xprintf > 0)
480 return (__xvprintf(fp, fmt0, ap));
481
482#ifndef NO_FLOATING_POINT
483 /*
484 * We can decompose the printed representation of floating
485 * point numbers into several parts, some of which may be empty:
486 *
487 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ
488 * A B ---C--- D E F
489 *
490 * A: 'sign' holds this value if present; '\0' otherwise
491 * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal
492 * C: cp points to the string MMMNNN. Leading and trailing
493 * zeros are not in the string and must be added.
494 * D: expchar holds this character; '\0' if no exponent, e.g. %f
495 * F: at least two digits for decimal, at least one digit for hex
496 */
497 char *decimal_point; /* locale specific decimal point */
498 int signflag; /* true if float is negative */
499 union { /* floating point arguments %[aAeEfFgG] */
500 double dbl;
501 long double ldbl;
502 } fparg;
503 int expt; /* integer value of exponent */
504 char expchar; /* exponent character: [eEpP\0] */
505 char *dtoaend; /* pointer to end of converted digits */
506 int expsize; /* character count for expstr */
507 int lead; /* sig figs before decimal or group sep */
508 int ndig; /* actual number of digits returned by dtoa */
509 char expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */
510 char *dtoaresult; /* buffer allocated by dtoa */
511 int nseps; /* number of group separators with ' */
512 int nrepeats; /* number of repeats of the last group */
513#endif
514 u_long ulval; /* integer arguments %[diouxX] */
515 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */
516 int base; /* base for [diouxX] conversion */
517 int dprec; /* a copy of prec if [diouxX], 0 otherwise */
518 int realsz; /* field size expanded by dprec, sign, etc */
519 int size; /* size of converted field or string */
520 int prsize; /* max size of printed field */
521 const char *xdigs; /* digits for %[xX] conversion */
522#define NIOV 8
523 struct __suio uio; /* output information: summary */
524 struct __siov iov[NIOV];/* ... and individual io vectors */
525 char buf[BUF]; /* buffer with space for digits of uintmax_t */
526 char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */
527 union arg *argtable; /* args, built due to positional arg */
528 union arg statargtable [STATIC_ARG_TBL_SIZE];
529 int nextarg; /* 1-based argument index */
530 va_list orgap; /* original argument pointer */
531 char *convbuf; /* wide to multibyte conversion result */
532
533 /*
534 * Choose PADSIZE to trade efficiency vs. size. If larger printf
535 * fields occur frequently, increase PADSIZE and make the initialisers
536 * below longer.
537 */
538#define PADSIZE 16 /* pad chunk size */
539 static char blanks[PADSIZE] =
540 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
541 static char zeroes[PADSIZE] =
542 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
543
544 static const char xdigs_lower[16] = "0123456789abcdef";
545 static const char xdigs_upper[16] = "0123456789ABCDEF";
546
547 /*
548 * BEWARE, these `goto error' on error, and PAD uses `n'.
549 */
550#define PRINT(ptr, len) { \
551 iovp->iov_base = (ptr); \
552 iovp->iov_len = (len); \
553 uio.uio_resid += (len); \
554 iovp++; \
555 if (++uio.uio_iovcnt >= NIOV) { \
556 if (__sprint(fp, &uio)) \
557 goto error; \
558 iovp = iov; \
559 } \
560}
561#define PAD(howmany, with) { \
562 if ((n = (howmany)) > 0) { \
563 while (n > PADSIZE) { \
564 PRINT(with, PADSIZE); \
565 n -= PADSIZE; \
566 } \
567 PRINT(with, n); \
568 } \
569}
570#define PRINTANDPAD(p, ep, len, with) do { \
571 n2 = (ep) - (p); \
572 if (n2 > (len)) \
573 n2 = (len); \
574 if (n2 > 0) \
575 PRINT((p), n2); \
576 PAD((len) - (n2 > 0 ? n2 : 0), (with)); \
577} while(0)
578#define FLUSH() { \
579 if (uio.uio_resid && __sprint(fp, &uio)) \
580 goto error; \
581 uio.uio_iovcnt = 0; \
582 iovp = iov; \
583}
584
585 /*
586 * Get the argument indexed by nextarg. If the argument table is
587 * built, use it to get the argument. If its not, get the next
588 * argument (and arguments must be gotten sequentially).
589 */
590#define GETARG(type) \
591 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
592 (nextarg++, va_arg(ap, type)))
593
594 /*
595 * To extend shorts properly, we need both signed and unsigned
596 * argument extraction methods.
597 */
598#define SARG() \
599 (flags&LONGINT ? GETARG(long) : \
600 flags&SHORTINT ? (long)(short)GETARG(int) : \
601 flags&CHARINT ? (long)(signed char)GETARG(int) : \
602 (long)GETARG(int))
603#define UARG() \
604 (flags&LONGINT ? GETARG(u_long) : \
605 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
606 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \
607 (u_long)GETARG(u_int))
608#define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT)
609#define SJARG() \
610 (flags&INTMAXT ? GETARG(intmax_t) : \
611 flags&SIZET ? (intmax_t)GETARG(size_t) : \
612 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \
613 (intmax_t)GETARG(long long))
614#define UJARG() \
615 (flags&INTMAXT ? GETARG(uintmax_t) : \
616 flags&SIZET ? (uintmax_t)GETARG(size_t) : \
617 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \
618 (uintmax_t)GETARG(unsigned long long))
619
620 /*
621 * Get * arguments, including the form *nn$. Preserve the nextarg
622 * that the argument can be gotten once the type is determined.
623 */
624#define GETASTER(val) \
625 n2 = 0; \
626 cp = fmt; \
627 while (is_digit(*cp)) { \
628 n2 = 10 * n2 + to_digit(*cp); \
629 cp++; \
630 } \
631 if (*cp == '$') { \
632 int hold = nextarg; \
633 if (argtable == NULL) { \
634 argtable = statargtable; \
635 __find_arguments (fmt0, orgap, &argtable); \
636 } \
637 nextarg = n2; \
638 val = GETARG (int); \
639 nextarg = hold; \
640 fmt = ++cp; \
641 } else { \
642 val = GETARG (int); \
643 }
644
645
646 thousands_sep = '\0';
647 grouping = NULL;
648 convbuf = NULL;
649#ifndef NO_FLOATING_POINT
650 dtoaresult = NULL;
651 decimal_point = localeconv()->decimal_point;
652#endif
653 /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
654 if (prepwrite(fp) != 0)
655 return (EOF);
656
657 /* optimise fprintf(stderr) (and other unbuffered Unix files) */
658 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
659 fp->_file >= 0)
660 return (__sbprintf(fp, fmt0, ap));
661
662 fmt = (char *)fmt0;
230 fmt = (char *)fmt0;
663 argtable = NULL;
664 nextarg = 1;
665 va_copy(orgap, ap);
666 uio.uio_iov = iovp = iov;
667 uio.uio_resid = 0;
668 uio.uio_iovcnt = 0;
669 ret = 0;
231 inittypes(&types);
670
671 /*
672 * Scan the format for conversions (`%' character).
673 */
674 for (;;) {
232
233 /*
234 * Scan the format for conversions (`%' character).
235 */
236 for (;;) {
675 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
676 /* void */;
677 if ((n = fmt - cp) != 0) {
678 if ((unsigned)ret + n > INT_MAX) {
679 ret = EOF;
680 goto error;
681 }
682 PRINT(cp, n);
683 ret += n;
684 }
237 while ((ch = *fmt) != '\0' && ch != '%')
238 fmt++;
685 if (ch == '\0')
686 goto done;
687 fmt++; /* skip over '%' */
688
689 flags = 0;
239 if (ch == '\0')
240 goto done;
241 fmt++; /* skip over '%' */
242
243 flags = 0;
690 dprec = 0;
691 width = 0;
244 width = 0;
692 prec = -1;
693 sign = '\0';
694 ox[1] = '\0';
695
696rflag: ch = *fmt++;
697reswitch: switch (ch) {
698 case ' ':
245
246rflag: ch = *fmt++;
247reswitch: switch (ch) {
248 case ' ':
699 /*-
700 * ``If the space and + flags both appear, the space
701 * flag will be ignored.''
702 * -- ANSI X3J11
703 */
704 if (!sign)
705 sign = ' ';
706 goto rflag;
707 case '#':
249 case '#':
708 flags |= ALT;
709 goto rflag;
710 case '*':
250 goto rflag;
251 case '*':
711 /*-
712 * ``A negative field width argument is taken as a
713 * - flag followed by a positive field width.''
714 * -- ANSI X3J11
715 * They don't exclude field widths read from args.
716 */
717 GETASTER (width);
718 if (width >= 0)
719 goto rflag;
720 width = -width;
721 /* FALLTHROUGH */
722 case '-':
723 flags |= LADJUST;
252 addaster(&types, &fmt);
724 goto rflag;
253 goto rflag;
254 case '-':
725 case '+':
255 case '+':
726 sign = '+';
727 goto rflag;
728 case '\'':
256 case '\'':
729 flags |= GROUPING;
730 thousands_sep = *(localeconv()->thousands_sep);
731 grouping = localeconv()->grouping;
732 goto rflag;
733 case '.':
734 if ((ch = *fmt++) == '*') {
257 goto rflag;
258 case '.':
259 if ((ch = *fmt++) == '*') {
735 GETASTER (prec);
260 addaster(&types, &fmt);
736 goto rflag;
737 }
261 goto rflag;
262 }
738 prec = 0;
739 while (is_digit(ch)) {
263 while (is_digit(ch)) {
740 prec = 10 * prec + to_digit(ch);
741 ch = *fmt++;
742 }
743 goto reswitch;
744 case '0':
264 ch = *fmt++;
265 }
266 goto reswitch;
267 case '0':
745 /*-
746 * ``Note that 0 is taken as a flag, not as the
747 * beginning of a field width.''
748 * -- ANSI X3J11
749 */
750 flags |= ZEROPAD;
751 goto rflag;
752 case '1': case '2': case '3': case '4':
753 case '5': case '6': case '7': case '8': case '9':
754 n = 0;
755 do {
756 n = 10 * n + to_digit(ch);
757 ch = *fmt++;
758 } while (is_digit(ch));
759 if (ch == '$') {
268 goto rflag;
269 case '1': case '2': case '3': case '4':
270 case '5': case '6': case '7': case '8': case '9':
271 n = 0;
272 do {
273 n = 10 * n + to_digit(ch);
274 ch = *fmt++;
275 } while (is_digit(ch));
276 if (ch == '$') {
760 nextarg = n;
761 if (argtable == NULL) {
762 argtable = statargtable;
763 __find_arguments (fmt0, orgap,
764 &argtable);
765 }
277 types.nextarg = n;
766 goto rflag;
767 }
768 width = n;
769 goto reswitch;
770#ifndef NO_FLOATING_POINT
771 case 'L':
772 flags |= LONGDBL;
773 goto rflag;

--- 23 unchanged lines hidden (view full) ---

797 goto rflag;
798 case 'z':
799 flags |= SIZET;
800 goto rflag;
801 case 'C':
802 flags |= LONGINT;
803 /*FALLTHROUGH*/
804 case 'c':
278 goto rflag;
279 }
280 width = n;
281 goto reswitch;
282#ifndef NO_FLOATING_POINT
283 case 'L':
284 flags |= LONGDBL;
285 goto rflag;

--- 23 unchanged lines hidden (view full) ---

309 goto rflag;
310 case 'z':
311 flags |= SIZET;
312 goto rflag;
313 case 'C':
314 flags |= LONGINT;
315 /*FALLTHROUGH*/
316 case 'c':
805 if (flags & LONGINT) {
806 static const mbstate_t initial;
807 mbstate_t mbs;
808 size_t mbseqlen;
809
810 mbs = initial;
811 mbseqlen = wcrtomb(cp = buf,
812 (wchar_t)GETARG(wint_t), &mbs);
813 if (mbseqlen == (size_t)-1) {
814 fp->_flags |= __SERR;
815 goto error;
816 }
817 size = (int)mbseqlen;
818 } else {
819 *(cp = buf) = GETARG(int);
820 size = 1;
821 }
822 sign = '\0';
317 if (flags & LONGINT)
318 addtype(&types, T_WINT);
319 else
320 addtype(&types, T_INT);
823 break;
824 case 'D':
825 flags |= LONGINT;
826 /*FALLTHROUGH*/
827 case 'd':
828 case 'i':
321 break;
322 case 'D':
323 flags |= LONGINT;
324 /*FALLTHROUGH*/
325 case 'd':
326 case 'i':
829 if (flags & INTMAX_SIZE) {
830 ujval = SJARG();
831 if ((intmax_t)ujval < 0) {
832 ujval = -ujval;
833 sign = '-';
834 }
835 } else {
836 ulval = SARG();
837 if ((long)ulval < 0) {
838 ulval = -ulval;
839 sign = '-';
840 }
841 }
842 base = 10;
843 goto number;
327 addsarg(&types, flags);
328 break;
844#ifndef NO_FLOATING_POINT
845 case 'a':
846 case 'A':
329#ifndef NO_FLOATING_POINT
330 case 'a':
331 case 'A':
847 if (ch == 'a') {
848 ox[1] = 'x';
849 xdigs = xdigs_lower;
850 expchar = 'p';
851 } else {
852 ox[1] = 'X';
853 xdigs = xdigs_upper;
854 expchar = 'P';
855 }
856 if (prec >= 0)
857 prec++;
858 if (dtoaresult != NULL)
859 freedtoa(dtoaresult);
860 if (flags & LONGDBL) {
861 fparg.ldbl = GETARG(long double);
862 dtoaresult = cp =
863 __hldtoa(fparg.ldbl, xdigs, prec,
864 &expt, &signflag, &dtoaend);
865 } else {
866 fparg.dbl = GETARG(double);
867 dtoaresult = cp =
868 __hdtoa(fparg.dbl, xdigs, prec,
869 &expt, &signflag, &dtoaend);
870 }
871 if (prec < 0)
872 prec = dtoaend - cp;
873 if (expt == INT_MAX)
874 ox[1] = '\0';
875 goto fp_common;
876 case 'e':
877 case 'E':
332 case 'e':
333 case 'E':
878 expchar = ch;
879 if (prec < 0) /* account for digit before decpt */
880 prec = DEFPREC + 1;
881 else
882 prec++;
883 goto fp_begin;
884 case 'f':
334 case 'f':
885 case 'F':
886 expchar = '\0';
887 goto fp_begin;
888 case 'g':
889 case 'G':
335 case 'g':
336 case 'G':
890 expchar = ch - ('g' - 'e');
891 if (prec == 0)
892 prec = 1;
893fp_begin:
894 if (prec < 0)
895 prec = DEFPREC;
896 if (dtoaresult != NULL)
897 freedtoa(dtoaresult);
898 if (flags & LONGDBL) {
899 fparg.ldbl = GETARG(long double);
900 dtoaresult = cp =
901 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
902 &expt, &signflag, &dtoaend);
903 } else {
904 fparg.dbl = GETARG(double);
905 dtoaresult = cp =
906 dtoa(fparg.dbl, expchar ? 2 : 3, prec,
907 &expt, &signflag, &dtoaend);
908 if (expt == 9999)
909 expt = INT_MAX;
910 }
911fp_common:
912 if (signflag)
913 sign = '-';
914 if (expt == INT_MAX) { /* inf or nan */
915 if (*cp == 'N') {
916 cp = (ch >= 'a') ? "nan" : "NAN";
917 sign = '\0';
918 } else
919 cp = (ch >= 'a') ? "inf" : "INF";
920 size = 3;
921 flags &= ~ZEROPAD;
922 break;
923 }
924 flags |= FPT;
925 ndig = dtoaend - cp;
926 if (ch == 'g' || ch == 'G') {
927 if (expt > -4 && expt <= prec) {
928 /* Make %[gG] smell like %[fF] */
929 expchar = '\0';
930 if (flags & ALT)
931 prec -= expt;
932 else
933 prec = ndig - expt;
934 if (prec < 0)
935 prec = 0;
936 } else {
937 /*
938 * Make %[gG] smell like %[eE], but
939 * trim trailing zeroes if no # flag.
940 */
941 if (!(flags & ALT))
942 prec = ndig;
943 }
944 }
945 if (expchar) {
946 expsize = exponent(expstr, expt - 1, expchar);
947 size = expsize + prec;
948 if (prec > 1 || flags & ALT)
949 ++size;
950 } else {
951 /* space for digits before decimal point */
952 if (expt > 0)
953 size = expt;
954 else /* "0" */
955 size = 1;
956 /* space for decimal pt and following digits */
957 if (prec || flags & ALT)
958 size += prec + 1;
959 if (grouping && expt > 0) {
960 /* space for thousands' grouping */
961 nseps = nrepeats = 0;
962 lead = expt;
963 while (*grouping != CHAR_MAX) {
964 if (lead <= *grouping)
965 break;
966 lead -= *grouping;
967 if (*(grouping+1)) {
968 nseps++;
969 grouping++;
970 } else
971 nrepeats++;
972 }
973 size += nseps + nrepeats;
974 } else
975 lead = expt;
976 }
337 if (flags & LONGDBL)
338 addtype(&types, T_LONG_DOUBLE);
339 else
340 addtype(&types, T_DOUBLE);
977 break;
978#endif /* !NO_FLOATING_POINT */
979 case 'n':
341 break;
342#endif /* !NO_FLOATING_POINT */
343 case 'n':
980 /*
981 * Assignment-like behavior is specified if the
982 * value overflows or is otherwise unrepresentable.
983 * C99 says to use `signed char' for %hhn conversions.
984 */
985 if (flags & LLONGINT)
986 *GETARG(long long *) = ret;
987 else if (flags & SIZET)
988 *GETARG(ssize_t *) = (ssize_t)ret;
344 if (flags & INTMAXT)
345 addtype(&types, TP_INTMAXT);
989 else if (flags & PTRDIFFT)
346 else if (flags & PTRDIFFT)
990 *GETARG(ptrdiff_t *) = ret;
991 else if (flags & INTMAXT)
992 *GETARG(intmax_t *) = ret;
347 addtype(&types, TP_PTRDIFFT);
348 else if (flags & SIZET)
349 addtype(&types, TP_SIZET);
350 else if (flags & LLONGINT)
351 addtype(&types, TP_LLONG);
993 else if (flags & LONGINT)
352 else if (flags & LONGINT)
994 *GETARG(long *) = ret;
353 addtype(&types, TP_LONG);
995 else if (flags & SHORTINT)
354 else if (flags & SHORTINT)
996 *GETARG(short *) = ret;
355 addtype(&types, TP_SHORT);
997 else if (flags & CHARINT)
356 else if (flags & CHARINT)
998 *GETARG(signed char *) = ret;
357 addtype(&types, TP_SCHAR);
999 else
358 else
1000 *GETARG(int *) = ret;
359 addtype(&types, TP_INT);
1001 continue; /* no output */
1002 case 'O':
1003 flags |= LONGINT;
1004 /*FALLTHROUGH*/
1005 case 'o':
360 continue; /* no output */
361 case 'O':
362 flags |= LONGINT;
363 /*FALLTHROUGH*/
364 case 'o':
1006 if (flags & INTMAX_SIZE)
1007 ujval = UJARG();
1008 else
1009 ulval = UARG();
1010 base = 8;
1011 goto nosign;
365 adduarg(&types, flags);
366 break;
1012 case 'p':
367 case 'p':
1013 /*-
1014 * ``The argument shall be a pointer to void. The
1015 * value of the pointer is converted to a sequence
1016 * of printable characters, in an implementation-
1017 * defined manner.''
1018 * -- ANSI X3J11
1019 */
1020 ujval = (uintmax_t)(uintptr_t)GETARG(void *);
1021 base = 16;
1022 xdigs = xdigs_lower;
1023 flags = flags | INTMAXT;
1024 ox[1] = 'x';
1025 goto nosign;
368 addtype(&types, TP_VOID);
369 break;
1026 case 'S':
1027 flags |= LONGINT;
1028 /*FALLTHROUGH*/
1029 case 's':
370 case 'S':
371 flags |= LONGINT;
372 /*FALLTHROUGH*/
373 case 's':
1030 if (flags & LONGINT) {
1031 wchar_t *wcp;
1032
1033 if (convbuf != NULL)
1034 free(convbuf);
1035 if ((wcp = GETARG(wchar_t *)) == NULL)
1036 cp = "(null)";
1037 else {
1038 convbuf = __wcsconv(wcp, prec);
1039 if (convbuf == NULL) {
1040 fp->_flags |= __SERR;
1041 goto error;
1042 }
1043 cp = convbuf;
1044 }
1045 } else if ((cp = GETARG(char *)) == NULL)
1046 cp = "(null)";
1047 if (prec >= 0) {
1048 /*
1049 * can't use strlen; can only look for the
1050 * NUL in the first `prec' characters, and
1051 * strlen() will go further.
1052 */
1053 char *p = memchr(cp, 0, (size_t)prec);
1054
1055 if (p != NULL) {
1056 size = p - cp;
1057 if (size > prec)
1058 size = prec;
1059 } else
1060 size = prec;
1061 } else
1062 size = strlen(cp);
1063 sign = '\0';
374 if (flags & LONGINT)
375 addtype(&types, TP_WCHAR);
376 else
377 addtype(&types, TP_CHAR);
1064 break;
1065 case 'U':
1066 flags |= LONGINT;
1067 /*FALLTHROUGH*/
1068 case 'u':
378 break;
379 case 'U':
380 flags |= LONGINT;
381 /*FALLTHROUGH*/
382 case 'u':
1069 if (flags & INTMAX_SIZE)
1070 ujval = UJARG();
1071 else
1072 ulval = UARG();
1073 base = 10;
1074 goto nosign;
1075 case 'X':
383 case 'X':
1076 xdigs = xdigs_upper;
1077 goto hex;
1078 case 'x':
384 case 'x':
1079 xdigs = xdigs_lower;
1080hex:
1081 if (flags & INTMAX_SIZE)
1082 ujval = UJARG();
1083 else
1084 ulval = UARG();
1085 base = 16;
1086 /* leading 0x/X only if non-zero */
1087 if (flags & ALT &&
1088 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0))
1089 ox[1] = ch;
1090
1091 flags &= ~GROUPING;
1092 /* unsigned conversions */
1093nosign: sign = '\0';
1094 /*-
1095 * ``... diouXx conversions ... if a precision is
1096 * specified, the 0 flag will be ignored.''
1097 * -- ANSI X3J11
1098 */
1099number: if ((dprec = prec) >= 0)
1100 flags &= ~ZEROPAD;
1101
1102 /*-
1103 * ``The result of converting a zero value with an
1104 * explicit precision of zero is no characters.''
1105 * -- ANSI X3J11
1106 *
1107 * ``The C Standard is clear enough as is. The call
1108 * printf("%#.0o", 0) should print 0.''
1109 * -- Defect Report #151
1110 */
1111 cp = buf + BUF;
1112 if (flags & INTMAX_SIZE) {
1113 if (ujval != 0 || prec != 0 ||
1114 (flags & ALT && base == 8))
1115 cp = __ujtoa(ujval, cp, base,
1116 flags & ALT, xdigs,
1117 flags & GROUPING, thousands_sep,
1118 grouping);
1119 } else {
1120 if (ulval != 0 || prec != 0 ||
1121 (flags & ALT && base == 8))
1122 cp = __ultoa(ulval, cp, base,
1123 flags & ALT, xdigs,
1124 flags & GROUPING, thousands_sep,
1125 grouping);
1126 }
1127 size = buf + BUF - cp;
1128 if (size > BUF) /* should never happen */
1129 abort();
385 adduarg(&types, flags);
1130 break;
1131 default: /* "%?" prints ?, unless ? is NUL */
1132 if (ch == '\0')
1133 goto done;
386 break;
387 default: /* "%?" prints ?, unless ? is NUL */
388 if (ch == '\0')
389 goto done;
1134 /* pretend it was %c with argument ch */
1135 cp = buf;
1136 *cp = ch;
1137 size = 1;
1138 sign = '\0';
1139 break;
1140 }
390 break;
391 }
392 }
393done:
394 /*
395 * Build the argument table.
396 */
397 if (types.tablemax >= STATIC_ARG_TBL_SIZE) {
398 *argtable = (union arg *)
399 malloc (sizeof (union arg) * (types.tablemax + 1));
400 }
1141
401
1142 /*
1143 * All reasonable formats wind up here. At this point, `cp'
1144 * points to a string which (if not flags&LADJUST) should be
1145 * padded out to `width' places. If flags&ZEROPAD, it should
1146 * first be prefixed by any sign or other prefix; otherwise,
1147 * it should be blank padded before the prefix is emitted.
1148 * After any left-hand padding and prefixing, emit zeroes
1149 * required by a decimal [diouxX] precision, then print the
1150 * string proper, then emit zeroes required by any leftover
1151 * floating precision; finally, if LADJUST, pad with blanks.
1152 *
1153 * Compute actual size, so we know how much to pad.
1154 * size excludes decimal prec; realsz includes it.
1155 */
1156 realsz = dprec > size ? dprec : size;
1157 if (sign)
1158 realsz++;
1159 if (ox[1])
1160 realsz += 2;
1161
1162 prsize = width > realsz ? width : realsz;
1163 if ((unsigned)ret + prsize > INT_MAX) {
1164 ret = EOF;
1165 goto error;
1166 }
1167
1168 /* right-adjusting blank padding */
1169 if ((flags & (LADJUST|ZEROPAD)) == 0)
1170 PAD(width - realsz, blanks);
1171
1172 /* prefix */
1173 if (sign)
1174 PRINT(&sign, 1);
1175
1176 if (ox[1]) { /* ox[1] is either x, X, or \0 */
1177 ox[0] = '0';
1178 PRINT(ox, 2);
1179 }
1180
1181 /* right-adjusting zero padding */
1182 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
1183 PAD(width - realsz, zeroes);
1184
1185 /* leading zeroes from decimal precision */
1186 PAD(dprec - size, zeroes);
1187
1188 /* the string or number proper */
402 (*argtable) [0].intarg = 0;
403 for (n = 1; n <= types.tablemax; n++) {
404 switch (types.table[n]) {
405 case T_UNUSED: /* whoops! */
406 (*argtable) [n].intarg = va_arg (ap, int);
407 break;
408 case TP_SCHAR:
409 (*argtable) [n].pschararg = va_arg (ap, signed char *);
410 break;
411 case TP_SHORT:
412 (*argtable) [n].pshortarg = va_arg (ap, short *);
413 break;
414 case T_INT:
415 (*argtable) [n].intarg = va_arg (ap, int);
416 break;
417 case T_U_INT:
418 (*argtable) [n].uintarg = va_arg (ap, unsigned int);
419 break;
420 case TP_INT:
421 (*argtable) [n].pintarg = va_arg (ap, int *);
422 break;
423 case T_LONG:
424 (*argtable) [n].longarg = va_arg (ap, long);
425 break;
426 case T_U_LONG:
427 (*argtable) [n].ulongarg = va_arg (ap, unsigned long);
428 break;
429 case TP_LONG:
430 (*argtable) [n].plongarg = va_arg (ap, long *);
431 break;
432 case T_LLONG:
433 (*argtable) [n].longlongarg = va_arg (ap, long long);
434 break;
435 case T_U_LLONG:
436 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long);
437 break;
438 case TP_LLONG:
439 (*argtable) [n].plonglongarg = va_arg (ap, long long *);
440 break;
441 case T_PTRDIFFT:
442 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t);
443 break;
444 case TP_PTRDIFFT:
445 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *);
446 break;
447 case T_SIZET:
448 (*argtable) [n].sizearg = va_arg (ap, size_t);
449 break;
450 case TP_SIZET:
451 (*argtable) [n].psizearg = va_arg (ap, size_t *);
452 break;
453 case T_INTMAXT:
454 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t);
455 break;
456 case T_UINTMAXT:
457 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t);
458 break;
459 case TP_INTMAXT:
460 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *);
461 break;
462 case T_DOUBLE:
1189#ifndef NO_FLOATING_POINT
463#ifndef NO_FLOATING_POINT
1190 if ((flags & FPT) == 0) {
1191 PRINT(cp, size);
1192 } else { /* glue together f_p fragments */
1193 if (!expchar) { /* %[fF] or sufficiently short %[gG] */
1194 if (expt <= 0) {
1195 PRINT(zeroes, 1);
1196 if (prec || flags & ALT)
1197 PRINT(decimal_point, 1);
1198 PAD(-expt, zeroes);
1199 /* already handled initial 0's */
1200 prec += expt;
1201 } else {
1202 PRINTANDPAD(cp, dtoaend, lead, zeroes);
1203 cp += lead;
1204 if (grouping) {
1205 while (nseps>0 || nrepeats>0) {
1206 if (nrepeats > 0)
1207 nrepeats--;
1208 else {
1209 grouping--;
1210 nseps--;
1211 }
1212 PRINT(&thousands_sep,
1213 1);
1214 PRINTANDPAD(cp,dtoaend,
1215 *grouping, zeroes);
1216 cp += *grouping;
1217 }
1218 if (cp > dtoaend)
1219 cp = dtoaend;
1220 }
1221 if (prec || flags & ALT)
1222 PRINT(decimal_point,1);
1223 }
1224 PRINTANDPAD(cp, dtoaend, prec, zeroes);
1225 } else { /* %[eE] or sufficiently long %[gG] */
1226 if (prec > 1 || flags & ALT) {
1227 buf[0] = *cp++;
1228 buf[1] = *decimal_point;
1229 PRINT(buf, 2);
1230 PRINT(cp, ndig-1);
1231 PAD(prec - ndig, zeroes);
1232 } else /* XeYYY */
1233 PRINT(cp, 1);
1234 PRINT(expstr, expsize);
1235 }
1236 }
1237#else
1238 PRINT(cp, size);
464 (*argtable) [n].doublearg = va_arg (ap, double);
1239#endif
465#endif
1240 /* left-adjusting padding (always blank) */
1241 if (flags & LADJUST)
1242 PAD(width - realsz, blanks);
1243
1244 /* finally, adjust ret */
1245 ret += prsize;
1246
1247 FLUSH(); /* copy out the I/O vectors */
1248 }
1249done:
1250 FLUSH();
1251error:
1252 va_end(orgap);
466 break;
467 case T_LONG_DOUBLE:
1253#ifndef NO_FLOATING_POINT
468#ifndef NO_FLOATING_POINT
1254 if (dtoaresult != NULL)
1255 freedtoa(dtoaresult);
469 (*argtable) [n].longdoublearg = va_arg (ap, long double);
1256#endif
470#endif
1257 if (convbuf != NULL)
1258 free(convbuf);
1259 if (__sferror(fp))
1260 ret = EOF;
1261 if ((argtable != NULL) && (argtable != statargtable))
1262 free (argtable);
1263 return (ret);
1264 /* NOTREACHED */
1265}
471 break;
472 case TP_CHAR:
473 (*argtable) [n].pchararg = va_arg (ap, char *);
474 break;
475 case TP_VOID:
476 (*argtable) [n].pvoidarg = va_arg (ap, void *);
477 break;
478 case T_WINT:
479 (*argtable) [n].wintarg = va_arg (ap, wint_t);
480 break;
481 case TP_WCHAR:
482 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *);
483 break;
484 }
485 }
1266
486
1267/*
1268 * Initialize a struct typetable.
1269 */
1270static inline void
1271inittypes(struct typetable *types)
1272{
1273 int n;
1274
1275 types->table = types->stattable;
1276 types->tablesize = STATIC_ARG_TBL_SIZE;
1277 types->tablemax = 0;
1278 types->nextarg = 1;
1279 for (n = 0; n < STATIC_ARG_TBL_SIZE; n++)
1280 types->table[n] = T_UNUSED;
487 freetypes(&types);
1281}
1282
488}
489
1283/*
1284 * struct typetable destructor.
1285 */
1286static inline void
1287freetypes(struct typetable *types)
490/* wchar version of __find_arguments. */
491void
492__find_warguments (const wchar_t *fmt0, va_list ap, union arg **argtable)
1288{
493{
1289
1290 if (types->table != types->stattable)
1291 free (types->table);
1292}
1293
1294/*
1295 * Add an argument type to the table, expanding if necessary.
1296 */
1297static inline void
1298addtype(struct typetable *types, enum typeid type)
1299{
1300
1301 if (types->nextarg >= types->tablesize)
1302 __grow_type_table(types);
1303 if (types->nextarg > types->tablemax)
1304 types->tablemax = types->nextarg;
1305 types->table[types->nextarg++] = type;
1306}
1307
1308static inline void
1309addsarg(struct typetable *types, int flags)
1310{
1311
1312 if (flags & INTMAXT)
1313 addtype(types, T_INTMAXT);
1314 else if (flags & SIZET)
1315 addtype(types, T_SIZET);
1316 else if (flags & PTRDIFFT)
1317 addtype(types, T_PTRDIFFT);
1318 else if (flags & LLONGINT)
1319 addtype(types, T_LLONG);
1320 else if (flags & LONGINT)
1321 addtype(types, T_LONG);
1322 else
1323 addtype(types, T_INT);
1324}
1325
1326static inline void
1327adduarg(struct typetable *types, int flags)
1328{
1329
1330 if (flags & INTMAXT)
1331 addtype(types, T_UINTMAXT);
1332 else if (flags & SIZET)
1333 addtype(types, T_SIZET);
1334 else if (flags & PTRDIFFT)
1335 addtype(types, T_PTRDIFFT);
1336 else if (flags & LLONGINT)
1337 addtype(types, T_U_LLONG);
1338 else if (flags & LONGINT)
1339 addtype(types, T_U_LONG);
1340 else
1341 addtype(types, T_U_INT);
1342}
1343
1344/*
1345 * Add * arguments to the type array.
1346 */
1347static inline void
1348addaster(struct typetable *types, char **fmtp)
1349{
1350 char *cp;
1351 int n2;
1352
1353 n2 = 0;
1354 cp = *fmtp;
1355 while (is_digit(*cp)) {
1356 n2 = 10 * n2 + to_digit(*cp);
1357 cp++;
1358 }
1359 if (*cp == '$') {
1360 int hold = types->nextarg;
1361 types->nextarg = n2;
1362 addtype(types, T_INT);
1363 types->nextarg = hold;
1364 *fmtp = ++cp;
1365 } else {
1366 addtype(types, T_INT);
1367 }
1368}
1369
1370/*
1371 * Find all arguments when a positional parameter is encountered. Returns a
1372 * table, indexed by argument number, of pointers to each arguments. The
1373 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
1374 * It will be replaces with a malloc-ed one if it overflows.
1375 */
1376static void
1377__find_arguments (const char *fmt0, va_list ap, union arg **argtable)
1378{
1379 char *fmt; /* format string */
1380 int ch; /* character from fmt */
494 wchar_t *fmt; /* format string */
495 wchar_t ch; /* character from fmt */
1381 int n; /* handy integer (short term usage) */
1382 int flags; /* flags as above */
1383 int width; /* width from format (%8d), or 0 */
1384 struct typetable types; /* table of types */
1385
496 int n; /* handy integer (short term usage) */
497 int flags; /* flags as above */
498 int width; /* width from format (%8d), or 0 */
499 struct typetable types; /* table of types */
500
1386 fmt = (char *)fmt0;
501 fmt = (wchar_t *)fmt0;
1387 inittypes(&types);
1388
1389 /*
1390 * Scan the format for conversions (`%' character).
1391 */
1392 for (;;) {
1393 while ((ch = *fmt) != '\0' && ch != '%')
1394 fmt++;

--- 5 unchanged lines hidden (view full) ---

1400 width = 0;
1401
1402rflag: ch = *fmt++;
1403reswitch: switch (ch) {
1404 case ' ':
1405 case '#':
1406 goto rflag;
1407 case '*':
502 inittypes(&types);
503
504 /*
505 * Scan the format for conversions (`%' character).
506 */
507 for (;;) {
508 while ((ch = *fmt) != '\0' && ch != '%')
509 fmt++;

--- 5 unchanged lines hidden (view full) ---

515 width = 0;
516
517rflag: ch = *fmt++;
518reswitch: switch (ch) {
519 case ' ':
520 case '#':
521 goto rflag;
522 case '*':
1408 addaster(&types, &fmt);
523 addwaster(&types, &fmt);
1409 goto rflag;
1410 case '-':
1411 case '+':
1412 case '\'':
1413 goto rflag;
1414 case '.':
1415 if ((ch = *fmt++) == '*') {
524 goto rflag;
525 case '-':
526 case '+':
527 case '\'':
528 goto rflag;
529 case '.':
530 if ((ch = *fmt++) == '*') {
1416 addaster(&types, &fmt);
531 addwaster(&types, &fmt);
1417 goto rflag;
1418 }
1419 while (is_digit(ch)) {
1420 ch = *fmt++;
1421 }
1422 goto reswitch;
1423 case '0':
1424 goto rflag;

--- 241 unchanged lines hidden (view full) ---

1666 abort(); /* XXX handle better */
1667 }
1668 for (n = oldsize; n < newsize; n++)
1669 newtable[n] = T_UNUSED;
1670
1671 types->table = newtable;
1672 types->tablesize = newsize;
1673}
532 goto rflag;
533 }
534 while (is_digit(ch)) {
535 ch = *fmt++;
536 }
537 goto reswitch;
538 case '0':
539 goto rflag;

--- 241 unchanged lines hidden (view full) ---

781 abort(); /* XXX handle better */
782 }
783 for (n = oldsize; n < newsize; n++)
784 newtable[n] = T_UNUSED;
785
786 types->table = newtable;
787 types->tablesize = newsize;
788}
1674
1675
1676#ifndef NO_FLOATING_POINT
1677
1678static int
1679exponent(char *p0, int exp, int fmtch)
1680{
1681 char *p, *t;
1682 char expbuf[MAXEXPDIG];
1683
1684 p = p0;
1685 *p++ = fmtch;
1686 if (exp < 0) {
1687 exp = -exp;
1688 *p++ = '-';
1689 }
1690 else
1691 *p++ = '+';
1692 t = expbuf + MAXEXPDIG;
1693 if (exp > 9) {
1694 do {
1695 *--t = to_char(exp % 10);
1696 } while ((exp /= 10) > 9);
1697 *--t = to_char(exp);
1698 for (; t < expbuf + MAXEXPDIG; *p++ = *t++);
1699 }
1700 else {
1701 /*
1702 * Exponents for decimal floating point conversions
1703 * (%[eEgG]) must be at least two characters long,
1704 * whereas exponents for hexadecimal conversions can
1705 * be only one character long.
1706 */
1707 if (fmtch == 'e' || fmtch == 'E')
1708 *p++ = '0';
1709 *p++ = to_char(exp);
1710 }
1711 return (p - p0);
1712}
1713#endif /* !NO_FLOATING_POINT */