2 * Copyright (c) 2005 Poul-Henning Kamp
3 * Copyright (c) 1990, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include "namespace.h"
38 #include <sys/types.h>
46 #include <namespace.h>
49 #include "un-namespace.h"
54 int __use_xprintf = -1;
56 /* private stuff -----------------------------------------------------*/
62 #ifndef NO_FLOATING_POINT
64 long double longdoublearg;
73 * Macros for converting digits to letters and vice versa
75 #define to_digit(c) ((c) - '0')
76 #define is_digit(c) (((unsigned)to_digit(c)) <= 9)
78 /* various globals ---------------------------------------------------*/
80 const char __lowercase_hex[17] = "0123456789abcdef?"; /*lint !e784 */
81 const char __uppercase_hex[17] = "0123456789ABCDEF?"; /*lint !e784 */
84 static char blanks[PADSIZE] =
85 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
86 static char zeroes[PADSIZE] =
87 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
89 /* printing and padding functions ------------------------------------*/
96 struct __siov iov[NIOV];
101 __printf_init(struct __printf_io *io)
104 io->uio.uio_iov = io->iovp = &io->iov[0];
105 io->uio.uio_resid = 0;
106 io->uio.uio_iovcnt = 0;
110 __printf_flush(struct __printf_io *io)
113 __sfvwrite(io->fp, &io->uio);
118 __printf_puts(struct __printf_io *io, const void *ptr, int len)
122 if (io->fp->_flags & __SERR)
126 io->iovp->iov_base = __DECONST(void *, ptr);
127 io->iovp->iov_len = len;
128 io->uio.uio_resid += len;
130 io->uio.uio_iovcnt++;
131 if (io->uio.uio_iovcnt >= NIOV)
137 __printf_pad(struct __printf_io *io, int howmany, int zero)
148 if ((n = (howmany)) > 0) {
149 while (n > PADSIZE) {
150 ret += __printf_puts(io, with, PADSIZE);
153 ret += __printf_puts(io, with, n);
159 __printf_out(struct __printf_io *io, const struct printf_info *pi, const void *ptr, int len)
163 if ((!pi->left) && pi->width > len)
164 ret += __printf_pad(io, pi->width - len, pi->pad == '0');
165 ret += __printf_puts(io, ptr, len);
166 if (pi->left && pi->width > len)
167 ret += __printf_pad(io, pi->width - len, pi->pad == '0');
172 /* percent handling -------------------------------------------------*/
175 __printf_arginfo_pct(const struct printf_info *pi __unused, size_t n __unused, int *argt __unused)
182 __printf_render_pct(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg __unused)
185 return (__printf_puts(io, "%", 1));
188 /* 'n' ---------------------------------------------------------------*/
191 __printf_arginfo_n(const struct printf_info *pi, size_t n, int *argt)
195 argt[0] = PA_POINTER;
200 * This is a printf_render so that all output has been flushed before it
205 __printf_render_n(FILE *io __unused, const struct printf_info *pi, const void *const *arg)
209 **((signed char **)arg[0]) = (signed char)pi->sofar;
210 else if (pi->is_short)
211 **((short **)arg[0]) = (short)pi->sofar;
212 else if (pi->is_long)
213 **((long **)arg[0]) = pi->sofar;
214 else if (pi->is_long_double)
215 **((long long **)arg[0]) = pi->sofar;
216 else if (pi->is_intmax)
217 **((intmax_t **)arg[0]) = pi->sofar;
218 else if (pi->is_ptrdiff)
219 **((ptrdiff_t **)arg[0]) = pi->sofar;
220 else if (pi->is_quad)
221 **((quad_t **)arg[0]) = pi->sofar;
222 else if (pi->is_size)
223 **((size_t **)arg[0]) = pi->sofar;
225 **((int **)arg[0]) = pi->sofar;
230 /* table -------------------------------------------------------------*/
232 /*lint -esym(785, printf_tbl) */
234 printf_arginfo_function *arginfo;
235 printf_function *gnurender;
236 printf_render *render;
237 } printf_tbl[256] = {
238 ['%'] = { __printf_arginfo_pct, NULL, __printf_render_pct },
239 ['A'] = { __printf_arginfo_float, NULL, __printf_render_float },
240 ['C'] = { __printf_arginfo_chr, NULL, __printf_render_chr },
241 ['E'] = { __printf_arginfo_float, NULL, __printf_render_float },
242 ['F'] = { __printf_arginfo_float, NULL, __printf_render_float },
243 ['G'] = { __printf_arginfo_float, NULL, __printf_render_float },
244 ['S'] = { __printf_arginfo_str, NULL, __printf_render_str },
245 ['X'] = { __printf_arginfo_int, NULL, __printf_render_int },
246 ['a'] = { __printf_arginfo_float, NULL, __printf_render_float },
247 ['c'] = { __printf_arginfo_chr, NULL, __printf_render_chr },
248 ['d'] = { __printf_arginfo_int, NULL, __printf_render_int },
249 ['e'] = { __printf_arginfo_float, NULL, __printf_render_float },
250 ['f'] = { __printf_arginfo_float, NULL, __printf_render_float },
251 ['g'] = { __printf_arginfo_float, NULL, __printf_render_float },
252 ['i'] = { __printf_arginfo_int, NULL, __printf_render_int },
253 ['n'] = { __printf_arginfo_n, __printf_render_n, NULL },
254 ['o'] = { __printf_arginfo_int, NULL, __printf_render_int },
255 ['p'] = { __printf_arginfo_ptr, NULL, __printf_render_ptr },
256 ['q'] = { __printf_arginfo_int, NULL, __printf_render_int },
257 ['s'] = { __printf_arginfo_str, NULL, __printf_render_str },
258 ['u'] = { __printf_arginfo_int, NULL, __printf_render_int },
259 ['x'] = { __printf_arginfo_int, NULL, __printf_render_int },
264 __v2printf(FILE *fp, const char *fmt0, unsigned pct, va_list ap)
266 struct printf_info *pi, *pil;
269 struct printf_info pia[pct + 10];
271 union arg args[pct + 10];
276 struct __printf_io io;
284 memset(argt, 0, sizeof argt);
285 for (pi = pia; ; pi++) {
286 memset(pi, 0, sizeof *pi);
293 pi->begin = pi->end = fmt;
294 while (*fmt != '\0' && *fmt != '%')
304 * ``If the space and + flags both appear, the space
305 * flag will be ignored.''
308 if (pi->showsign == 0)
321 pi->get_prec = nextarg;
322 argt[nextarg++] = PA_INT;
325 while (*fmt != '\0' && is_digit(*fmt)) {
327 pi->prec += to_digit(*fmt);
341 pi->get_width = nextarg;
342 argt[nextarg++] = PA_INT;
353 * ``Note that 0 is taken as a flag, not as the
354 * beginning of a field width.''
360 case '1': case '2': case '3':
361 case '4': case '5': case '6':
362 case '7': case '8': case '9':
364 while (*fmt != '\0' && is_digit(*fmt)) {
370 if (nextarg > maxarg)
380 pi->spec += ('a' - 'A');
382 if (pi->is_long_double || pi->is_quad) {
384 pi->is_long_double = 1;
387 pi->is_long_double = 0;
401 pi->is_long_double = 1;
417 pi->is_long_double = 1;
436 if (printf_tbl[pi->spec].arginfo == NULL)
437 errx(1, "arginfo[%c] = NULL", pi->spec);
438 ch = printf_tbl[pi->spec].arginfo(
439 pi, __PRINTFMAXARG, &argt[nextarg]);
441 pi->arg[0] = &args[nextarg];
443 pi->arg[1] = &args[nextarg + 1];
448 if (nextarg > maxarg)
451 fprintf(stderr, "fmt0 <%s>\n", fmt0);
452 fprintf(stderr, "pil %p\n", pil);
454 for (ch = 1; ch < maxarg; ch++) {
456 fprintf(stderr, "arg %d %x\n", ch, argt[ch]);
460 args[ch].intarg = (char)va_arg (ap, int);
463 args[ch].intarg = va_arg (ap, int);
465 case PA_INT | PA_FLAG_SHORT:
466 args[ch].intarg = (short)va_arg (ap, int);
468 case PA_INT | PA_FLAG_LONG:
469 args[ch].longarg = va_arg (ap, long);
471 case PA_INT | PA_FLAG_INTMAX:
472 args[ch].intmaxarg = va_arg (ap, intmax_t);
474 case PA_INT | PA_FLAG_QUAD:
475 args[ch].intmaxarg = va_arg (ap, quad_t);
477 case PA_INT | PA_FLAG_LONG_LONG:
478 args[ch].intmaxarg = va_arg (ap, long long);
480 case PA_INT | PA_FLAG_SIZE:
481 args[ch].intmaxarg = va_arg (ap, size_t);
483 case PA_INT | PA_FLAG_PTRDIFF:
484 args[ch].intmaxarg = va_arg (ap, ptrdiff_t);
487 args[ch].wintarg = va_arg (ap, wint_t);
490 args[ch].pvoidarg = va_arg (ap, void *);
493 args[ch].pchararg = va_arg (ap, char *);
496 args[ch].pwchararg = va_arg (ap, wchar_t *);
499 #ifndef NO_FLOATING_POINT
500 args[ch].doublearg = va_arg (ap, double);
503 case PA_DOUBLE | PA_FLAG_LONG_DOUBLE:
504 #ifndef NO_FLOATING_POINT
505 args[ch].longdoublearg = va_arg (ap, long double);
509 errx(1, "argtype = %x (fmt = \"%s\")\n",
513 for (pi = pia; pi < pil; pi++) {
515 fprintf(stderr, "pi %p", pi);
516 fprintf(stderr, " spec '%c'", pi->spec);
517 fprintf(stderr, " args %d",
518 ((uintptr_t)pi->arg[0] - (uintptr_t)args) / sizeof args[0]);
519 if (pi->width) fprintf(stderr, " width %d", pi->width);
520 if (pi->pad) fprintf(stderr, " pad 0x%x", pi->pad);
521 if (pi->left) fprintf(stderr, " left");
522 if (pi->showsign) fprintf(stderr, " showsign");
523 if (pi->prec != -1) fprintf(stderr, " prec %d", pi->prec);
524 if (pi->is_char) fprintf(stderr, " char");
525 if (pi->is_short) fprintf(stderr, " short");
526 if (pi->is_long) fprintf(stderr, " long");
527 if (pi->is_long_double) fprintf(stderr, " long_double");
528 fprintf(stderr, "\n");
529 fprintf(stderr, "\t\"%.*s\"\n", pi->end - pi->begin, pi->begin);
532 pi->width = args[pi->get_width].intarg;
534 * ``A negative field width argument is taken as a
535 * - flag followed by a positive field width.''
537 * They don't exclude field widths read from args.
541 pi->width = -pi->width;
545 pi->prec = args[pi->get_prec].intarg;
546 ret += __printf_puts(&io, pi->begin, pi->end - pi->begin);
547 if (printf_tbl[pi->spec].gnurender != NULL) {
550 ret += printf_tbl[pi->spec].gnurender(
551 fp, pi, (const void *)pi->arg);
552 } else if (printf_tbl[pi->spec].render != NULL) {
554 n = printf_tbl[pi->spec].render(
555 &io, pi, (const void *)pi->arg);
557 io.fp->_flags |= __SERR;
560 } else if (pi->begin == pi->end)
561 errx(1, "render[%c] = NULL", *fmt);
567 extern int __fflush(FILE *fp);
570 * Helper function for `fprintf to unbuffered unix file': creates a
571 * temporary buffer. We only work on write-only files; this avoids
572 * worries about ungetc buffers and so forth.
575 __v3printf(FILE *fp, const char *fmt, int pct, va_list ap)
579 unsigned char buf[BUFSIZ];
581 /* copy the important variables */
582 fake._flags = fp->_flags & ~__SNBF;
583 fake._file = fp->_file;
584 fake._cookie = fp->_cookie;
585 fake._write = fp->_write;
586 fake._orientation = fp->_orientation;
587 fake._mbstate = fp->_mbstate;
589 /* set up the buffer */
590 fake._bf._base = fake._p = buf;
591 fake._bf._size = fake._w = sizeof(buf);
592 fake._lbfsize = 0; /* not actually used, but Just In Case */
594 /* do the work, then copy any error status */
595 ret = __v2printf(&fake, fmt, pct, ap);
596 if (ret >= 0 && __fflush(&fake))
598 if (fake._flags & __SERR)
599 fp->_flags |= __SERR;
604 __xvprintf(FILE *fp, const char *fmt0, va_list ap)
609 /* Count number of '%' signs handling double '%' signs */
610 for (p = fmt0, u = 0; *p; p++) {
618 /* optimise fprintf(stderr) (and other unbuffered Unix files) */
619 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
621 return (__v3printf(fp, fmt0, u, ap));
623 return (__v2printf(fp, fmt0, u, ap));
626 /* extending ---------------------------------------------------------*/
629 register_printf_function(int spec, printf_function *render, printf_arginfo_function *arginfo)
632 if (spec > 255 || spec < 0)
634 printf_tbl[spec].gnurender = render;
635 printf_tbl[spec].arginfo = arginfo;
641 register_printf_render(int spec, printf_render *render, printf_arginfo_function *arginfo)
644 if (spec > 255 || spec < 0)
646 printf_tbl[spec].render = render;
647 printf_tbl[spec].arginfo = arginfo;
653 register_printf_render_std(const unsigned char *specs)
656 for (; *specs != '\0'; specs++) {
659 register_printf_render(*specs,
660 __printf_render_hexdump,
661 __printf_arginfo_hexdump);
664 register_printf_render(*specs,
665 __printf_render_errno,
666 __printf_arginfo_errno);
669 register_printf_render(*specs,
670 __printf_render_quote,
671 __printf_arginfo_quote);
674 register_printf_render(*specs,
675 __printf_render_time,
676 __printf_arginfo_time);
679 register_printf_render(*specs,
681 __printf_arginfo_vis);