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1/* crypto/bio/b_print.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59/*
60 * Stolen from tjh's ssl/ssl_trc.c stuff.
61 */
62
63#include <stdio.h>
64#include <stdarg.h>
65#include <string.h>
66#include <ctype.h>
67#include <assert.h>
68#include <limits.h>
69#include "cryptlib.h"
70#ifndef NO_SYS_TYPES_H
71#include <sys/types.h>
72#endif
73#include <openssl/bio.h>
74
75#ifdef BN_LLONG
76# ifndef HAVE_LONG_LONG
77# define HAVE_LONG_LONG 1
78# endif
79#endif
80
81static void dopr (char *buffer, size_t maxlen, size_t *retlen,
82 const char *format, va_list args);
83#ifdef USE_ALLOCATING_PRINT
84static void doapr (char **buffer, size_t *retlen,
85 const char *format, va_list args);
86#endif
87
88int BIO_printf (BIO *bio, ...)
89 {
90 va_list args;
91 char *format;
92 int ret;
93 size_t retlen;
94#ifdef USE_ALLOCATING_PRINT
95 char *hugebuf;
96#else
97 MS_STATIC char hugebuf[1024*2]; /* 10k in one chunk is the limit */
98#endif
99
100 va_start(args, bio);
101 format=va_arg(args, char *);
102
103#ifndef USE_ALLOCATING_PRINT
104 hugebuf[0]='\0';
105 dopr(hugebuf, sizeof(hugebuf), &retlen, format, args);
106#else
107 hugebuf = NULL;
108 CRYPTO_push_info("doapr()");
109 doapr(&hugebuf, &retlen, format, args);
110 if (hugebuf)
111 {
112#endif
113 ret=BIO_write(bio, hugebuf, (int)retlen);
114
115#ifdef USE_ALLOCATING_PRINT
116 Free(hugebuf);
117 }
118 CRYPTO_pop_info();
119#endif
120 va_end(args);
121 return(ret);
122 }
123
124/*
125 * Copyright Patrick Powell 1995
126 * This code is based on code written by Patrick Powell <papowell@astart.com>
127 * It may be used for any purpose as long as this notice remains intact
128 * on all source code distributions.
129 */
130
131/*
132 * This code contains numerious changes and enhancements which were
133 * made by lots of contributors over the last years to Patrick Powell's
134 * original code:
135 *
136 * o Patrick Powell <papowell@astart.com> (1995)
137 * o Brandon Long <blong@fiction.net> (1996, for Mutt)
138 * o Thomas Roessler <roessler@guug.de> (1998, for Mutt)
139 * o Michael Elkins <me@cs.hmc.edu> (1998, for Mutt)
140 * o Andrew Tridgell <tridge@samba.org> (1998, for Samba)
141 * o Luke Mewburn <lukem@netbsd.org> (1999, for LukemFTP)
142 * o Ralf S. Engelschall <rse@engelschall.com> (1999, for Pth)
143 */
144
145#if HAVE_LONG_DOUBLE
146#define LDOUBLE long double
147#else
148#define LDOUBLE double
149#endif
150
151#if HAVE_LONG_LONG
152#define LLONG long long
153#else
154#define LLONG long
155#endif
156
157static void fmtstr (void (*)(char **, size_t *, size_t *, int),
158 char **, size_t *, size_t *, const char *, int, int,
159 int);
160static void fmtint (void (*)(char **, size_t *, size_t *, int),
161 char **, size_t *, size_t *, LLONG, int, int, int, int);
162static void fmtfp (void (*)(char **, size_t *, size_t *, int),
163 char **, size_t *, size_t *, LDOUBLE, int, int, int);
164#ifndef USE_ALLOCATING_PRINT
165static int dopr_isbig (size_t, size_t);
166static int dopr_copy (size_t);
167static void dopr_outch (char **, size_t *, size_t *, int);
168#else
169static int doapr_isbig (size_t, size_t);
170static int doapr_copy (size_t);
171static void doapr_outch (char **, size_t *, size_t *, int);
172#endif
173static void _dopr(void (*)(char **, size_t *, size_t *, int),
174 int (*)(size_t, size_t), int (*)(size_t),
175 char **buffer, size_t *maxlen, size_t *retlen,
176 const char *format, va_list args);
177
178/* format read states */
179#define DP_S_DEFAULT 0
180#define DP_S_FLAGS 1
181#define DP_S_MIN 2
182#define DP_S_DOT 3
183#define DP_S_MAX 4
184#define DP_S_MOD 5
185#define DP_S_CONV 6
186#define DP_S_DONE 7
187
188/* format flags - Bits */
189#define DP_F_MINUS (1 << 0)
190#define DP_F_PLUS (1 << 1)
191#define DP_F_SPACE (1 << 2)
192#define DP_F_NUM (1 << 3)
193#define DP_F_ZERO (1 << 4)
194#define DP_F_UP (1 << 5)
195#define DP_F_UNSIGNED (1 << 6)
196
197/* conversion flags */
198#define DP_C_SHORT 1
199#define DP_C_LONG 2
200#define DP_C_LDOUBLE 3
201#define DP_C_LLONG 4
202
203/* some handy macros */
204#define char_to_int(p) (p - '0')
205#define MAX(p,q) ((p >= q) ? p : q)
206
207#ifndef USE_ALLOCATING_PRINT
208static void
209dopr(
210 char *buffer,
211 size_t maxlen,
212 size_t *retlen,
213 const char *format,
214 va_list args)
215{
216 _dopr(dopr_outch, dopr_isbig, dopr_copy,
217 &buffer, &maxlen, retlen, format, args);
218}
219
220#else
221static void
222doapr(
223 char **buffer,
224 size_t *retlen,
225 const char *format,
226 va_list args)
227{
228 size_t dummy_maxlen = 0;
229 _dopr(doapr_outch, doapr_isbig, doapr_copy,
230 buffer, &dummy_maxlen, retlen, format, args);
231}
232#endif
233
234static void
235_dopr(
236 void (*outch_fn)(char **, size_t *, size_t *, int),
237 int (*isbig_fn)(size_t, size_t),
238 int (*copy_fn)(size_t),
239 char **buffer,
240 size_t *maxlen,
241 size_t *retlen,
242 const char *format,
243 va_list args)
244{
245 char ch;
246 LLONG value;
247 LDOUBLE fvalue;
248 char *strvalue;
249 int min;
250 int max;
251 int state;
252 int flags;
253 int cflags;
254 size_t currlen;
255
256 state = DP_S_DEFAULT;
257 flags = currlen = cflags = min = 0;
258 max = -1;
259 ch = *format++;
260
261 while (state != DP_S_DONE) {
262 if ((ch == '\0') || (*isbig_fn)(currlen, *maxlen))
263 state = DP_S_DONE;
264
265 switch (state) {
266 case DP_S_DEFAULT:
267 if (ch == '%')
268 state = DP_S_FLAGS;
269 else
270 (*outch_fn)(buffer, &currlen, maxlen, ch);
271 ch = *format++;
272 break;
273 case DP_S_FLAGS:
274 switch (ch) {
275 case '-':
276 flags |= DP_F_MINUS;
277 ch = *format++;
278 break;
279 case '+':
280 flags |= DP_F_PLUS;
281 ch = *format++;
282 break;
283 case ' ':
284 flags |= DP_F_SPACE;
285 ch = *format++;
286 break;
287 case '#':
288 flags |= DP_F_NUM;
289 ch = *format++;
290 break;
291 case '0':
292 flags |= DP_F_ZERO;
293 ch = *format++;
294 break;
295 default:
296 state = DP_S_MIN;
297 break;
298 }
299 break;
300 case DP_S_MIN:
301 if (isdigit((unsigned char)ch)) {
302 min = 10 * min + char_to_int(ch);
303 ch = *format++;
304 } else if (ch == '*') {
305 min = va_arg(args, int);
306 ch = *format++;
307 state = DP_S_DOT;
308 } else
309 state = DP_S_DOT;
310 break;
311 case DP_S_DOT:
312 if (ch == '.') {
313 state = DP_S_MAX;
314 ch = *format++;
315 } else
316 state = DP_S_MOD;
317 break;
318 case DP_S_MAX:
319 if (isdigit((unsigned char)ch)) {
320 if (max < 0)
321 max = 0;
322 max = 10 * max + char_to_int(ch);
323 ch = *format++;
324 } else if (ch == '*') {
325 max = va_arg(args, int);
326 ch = *format++;
327 state = DP_S_MOD;
328 } else
329 state = DP_S_MOD;
330 break;
331 case DP_S_MOD:
332 switch (ch) {
333 case 'h':
334 cflags = DP_C_SHORT;
335 ch = *format++;
336 break;
337 case 'l':
338 if (*format == 'l') {
339 cflags = DP_C_LLONG;
340 format++;
341 } else
342 cflags = DP_C_LONG;
343 ch = *format++;
344 break;
345 case 'q':
346 cflags = DP_C_LLONG;
347 ch = *format++;
348 break;
349 case 'L':
350 cflags = DP_C_LDOUBLE;
351 ch = *format++;
352 break;
353 default:
354 break;
355 }
356 state = DP_S_CONV;
357 break;
358 case DP_S_CONV:
359 switch (ch) {
360 case 'd':
361 case 'i':
362 switch (cflags) {
363 case DP_C_SHORT:
364 value = (short int)va_arg(args, int);
365 break;
366 case DP_C_LONG:
367 value = va_arg(args, long int);
368 break;
369 case DP_C_LLONG:
370 value = va_arg(args, LLONG);
371 break;
372 default:
373 value = va_arg(args, int);
374 break;
375 }
376 fmtint(outch_fn, buffer, &currlen, maxlen,
377 value, 10, min, max, flags);
378 break;
379 case 'X':
380 flags |= DP_F_UP;
381 /* FALLTHROUGH */
382 case 'x':
383 case 'o':
384 case 'u':
385 flags |= DP_F_UNSIGNED;
386 switch (cflags) {
387 case DP_C_SHORT:
388 value = (unsigned short int)va_arg(args, unsigned int);
389 break;
390 case DP_C_LONG:
391 value = (LLONG) va_arg(args,
392 unsigned long int);
393 break;
394 case DP_C_LLONG:
395 value = va_arg(args, unsigned LLONG);
396 break;
397 default:
398 value = (LLONG) va_arg(args,
399 unsigned int);
400 break;
401 }
402 fmtint(outch_fn, buffer, &currlen, maxlen, value,
403 ch == 'o' ? 8 : (ch == 'u' ? 10 : 16),
404 min, max, flags);
405 break;
406 case 'f':
407 if (cflags == DP_C_LDOUBLE)
408 fvalue = va_arg(args, LDOUBLE);
409 else
410 fvalue = va_arg(args, double);
411 fmtfp(outch_fn, buffer, &currlen, maxlen,
412 fvalue, min, max, flags);
413 break;
414 case 'E':
415 flags |= DP_F_UP;
416 case 'e':
417 if (cflags == DP_C_LDOUBLE)
418 fvalue = va_arg(args, LDOUBLE);
419 else
420 fvalue = va_arg(args, double);
421 break;
422 case 'G':
423 flags |= DP_F_UP;
424 case 'g':
425 if (cflags == DP_C_LDOUBLE)
426 fvalue = va_arg(args, LDOUBLE);
427 else
428 fvalue = va_arg(args, double);
429 break;
430 case 'c':
431 (*outch_fn)(buffer, &currlen, maxlen,
432 va_arg(args, int));
433 break;
434 case 's':
435 strvalue = va_arg(args, char *);
436 if (max < 0)
437 max = (*copy_fn)(*maxlen);
438 fmtstr(outch_fn, buffer, &currlen, maxlen, strvalue,
439 flags, min, max);
440 break;
441 case 'p':
442 value = (long)va_arg(args, void *);
443 fmtint(outch_fn, buffer, &currlen, maxlen,
444 value, 16, min, max, flags);
445 break;
446 case 'n': /* XXX */
447 if (cflags == DP_C_SHORT) {
448 short int *num;
449 num = va_arg(args, short int *);
450 *num = currlen;
451 } else if (cflags == DP_C_LONG) { /* XXX */
452 long int *num;
453 num = va_arg(args, long int *);
454 *num = (long int) currlen;
455 } else if (cflags == DP_C_LLONG) { /* XXX */
456 LLONG *num;
457 num = va_arg(args, LLONG *);
458 *num = (LLONG) currlen;
459 } else {
460 int *num;
461 num = va_arg(args, int *);
462 *num = currlen;
463 }
464 break;
465 case '%':
466 (*outch_fn)(buffer, &currlen, maxlen, ch);
467 break;
468 case 'w':
469 /* not supported yet, treat as next char */
470 ch = *format++;
471 break;
472 default:
473 /* unknown, skip */
474 break;
475 }
476 ch = *format++;
477 state = DP_S_DEFAULT;
478 flags = cflags = min = 0;
479 max = -1;
480 break;
481 case DP_S_DONE:
482 break;
483 default:
484 break;
485 }
486 }
487 if (currlen >= *maxlen - 1)
488 currlen = *maxlen - 1;
489 (*buffer)[currlen] = '\0';
490 *retlen = currlen;
491 return;
492}
493
494static void
495fmtstr(
496 void (*outch_fn)(char **, size_t *, size_t *, int),
497 char **buffer,
498 size_t *currlen,
499 size_t *maxlen,
500 const char *value,
501 int flags,
502 int min,
503 int max)
504{
505 int padlen, strln;
506 int cnt = 0;
507
508 if (value == 0)
509 value = "<NULL>";
510 for (strln = 0; value[strln]; ++strln)
511 ;
512 padlen = min - strln;
513 if (padlen < 0)
514 padlen = 0;
515 if (flags & DP_F_MINUS)
516 padlen = -padlen;
517
518 while ((padlen > 0) && (cnt < max)) {
519 (*outch_fn)(buffer, currlen, maxlen, ' ');
520 --padlen;
521 ++cnt;
522 }
523 while (*value && (cnt < max)) {
524 (*outch_fn)(buffer, currlen, maxlen, *value++);
525 ++cnt;
526 }
527 while ((padlen < 0) && (cnt < max)) {
528 (*outch_fn)(buffer, currlen, maxlen, ' ');
529 ++padlen;
530 ++cnt;
531 }
532}
533
534static void
535fmtint(
536 void (*outch_fn)(char **, size_t *, size_t *, int),
537 char **buffer,
538 size_t *currlen,
539 size_t *maxlen,
540 LLONG value,
541 int base,
542 int min,
543 int max,
544 int flags)
545{
546 int signvalue = 0;
547 unsigned LLONG uvalue;
548 char convert[20];
549 int place = 0;
550 int spadlen = 0;
551 int zpadlen = 0;
552 int caps = 0;
553
554 if (max < 0)
555 max = 0;
556 uvalue = value;
557 if (!(flags & DP_F_UNSIGNED)) {
558 if (value < 0) {
559 signvalue = '-';
560 uvalue = -value;
561 } else if (flags & DP_F_PLUS)
562 signvalue = '+';
563 else if (flags & DP_F_SPACE)
564 signvalue = ' ';
565 }
566 if (flags & DP_F_UP)
567 caps = 1;
568 do {
569 convert[place++] =
570 (caps ? "0123456789ABCDEF" : "0123456789abcdef")
571 [uvalue % (unsigned) base];
572 uvalue = (uvalue / (unsigned) base);
573 } while (uvalue && (place < 20));
574 if (place == 20)
575 place--;
576 convert[place] = 0;
577
578 zpadlen = max - place;
579 spadlen = min - MAX(max, place) - (signvalue ? 1 : 0);
580 if (zpadlen < 0)
581 zpadlen = 0;
582 if (spadlen < 0)
583 spadlen = 0;
584 if (flags & DP_F_ZERO) {
585 zpadlen = MAX(zpadlen, spadlen);
586 spadlen = 0;
587 }
588 if (flags & DP_F_MINUS)
589 spadlen = -spadlen;
590
591 /* spaces */
592 while (spadlen > 0) {
593 (*outch_fn)(buffer, currlen, maxlen, ' ');
594 --spadlen;
595 }
596
597 /* sign */
598 if (signvalue)
599 (*outch_fn)(buffer, currlen, maxlen, signvalue);
600
601 /* zeros */
602 if (zpadlen > 0) {
603 while (zpadlen > 0) {
604 (*outch_fn)(buffer, currlen, maxlen, '0');
605 --zpadlen;
606 }
607 }
608 /* digits */
609 while (place > 0)
610 (*outch_fn)(buffer, currlen, maxlen, convert[--place]);
611
612 /* left justified spaces */
613 while (spadlen < 0) {
614 (*outch_fn)(buffer, currlen, maxlen, ' ');
615 ++spadlen;
616 }
617 return;
618}
619
620static LDOUBLE
621abs_val(LDOUBLE value)
622{
623 LDOUBLE result = value;
624 if (value < 0)
625 result = -value;
626 return result;
627}
628
629static LDOUBLE
630pow10(int exp)
631{
632 LDOUBLE result = 1;
633 while (exp) {
634 result *= 10;
635 exp--;
636 }
637 return result;
638}
639
640static long
641round(LDOUBLE value)
642{
643 long intpart;
644 intpart = (long) value;
645 value = value - intpart;
646 if (value >= 0.5)
647 intpart++;
648 return intpart;
649}
650
651static void
652fmtfp(
653 void (*outch_fn)(char **, size_t *, size_t *, int),
654 char **buffer,
655 size_t *currlen,
656 size_t *maxlen,
657 LDOUBLE fvalue,
658 int min,
659 int max,
660 int flags)
661{
662 int signvalue = 0;
663 LDOUBLE ufvalue;
664 char iconvert[20];
665 char fconvert[20];
666 int iplace = 0;
667 int fplace = 0;
668 int padlen = 0;
669 int zpadlen = 0;
670 int caps = 0;
671 long intpart;
672 long fracpart;
673
674 if (max < 0)
675 max = 6;
676 ufvalue = abs_val(fvalue);
677 if (fvalue < 0)
678 signvalue = '-';
679 else if (flags & DP_F_PLUS)
680 signvalue = '+';
681 else if (flags & DP_F_SPACE)
682 signvalue = ' ';
683
684 intpart = (long)ufvalue;
685
686 /* sorry, we only support 9 digits past the decimal because of our
687 conversion method */
688 if (max > 9)
689 max = 9;
690
691 /* we "cheat" by converting the fractional part to integer by
692 multiplying by a factor of 10 */
693 fracpart = round((pow10(max)) * (ufvalue - intpart));
694
695 if (fracpart >= pow10(max)) {
696 intpart++;
697 fracpart -= (long)pow10(max);
698 }
699
700 /* convert integer part */
701 do {
702 iconvert[iplace++] =
703 (caps ? "0123456789ABCDEF"
704 : "0123456789abcdef")[intpart % 10];
705 intpart = (intpart / 10);
706 } while (intpart && (iplace < 20));
707 if (iplace == 20)
708 iplace--;
709 iconvert[iplace] = 0;
710
711 /* convert fractional part */
712 do {
713 fconvert[fplace++] =
714 (caps ? "0123456789ABCDEF"
715 : "0123456789abcdef")[fracpart % 10];
716 fracpart = (fracpart / 10);
717 } while (fracpart && (fplace < 20));
718 if (fplace == 20)
719 fplace--;
720 fconvert[fplace] = 0;
721
722 /* -1 for decimal point, another -1 if we are printing a sign */
723 padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
724 zpadlen = max - fplace;
725 if (zpadlen < 0)
726 zpadlen = 0;
727 if (padlen < 0)
728 padlen = 0;
729 if (flags & DP_F_MINUS)
730 padlen = -padlen;
731
732 if ((flags & DP_F_ZERO) && (padlen > 0)) {
733 if (signvalue) {
734 (*outch_fn)(buffer, currlen, maxlen, signvalue);
735 --padlen;
736 signvalue = 0;
737 }
738 while (padlen > 0) {
739 (*outch_fn)(buffer, currlen, maxlen, '0');
740 --padlen;
741 }
742 }
743 while (padlen > 0) {
744 (*outch_fn)(buffer, currlen, maxlen, ' ');
745 --padlen;
746 }
747 if (signvalue)
748 (*outch_fn)(buffer, currlen, maxlen, signvalue);
749
750 while (iplace > 0)
751 (*outch_fn)(buffer, currlen, maxlen, iconvert[--iplace]);
752
753 /*
754 * Decimal point. This should probably use locale to find the correct
755 * char to print out.
756 */
757 if (max > 0) {
758 (*outch_fn)(buffer, currlen, maxlen, '.');
759
760 while (fplace > 0)
761 (*outch_fn)(buffer, currlen, maxlen, fconvert[--fplace]);
762 }
763 while (zpadlen > 0) {
764 (*outch_fn)(buffer, currlen, maxlen, '0');
765 --zpadlen;
766 }
767
768 while (padlen < 0) {
769 (*outch_fn)(buffer, currlen, maxlen, ' ');
770 ++padlen;
771 }
772}
773
774static int
775dopr_copy(
776 size_t len)
777{
778 return len;
779}
780
781#ifdef USE_ALLOCATING_PRINT
782static int
783doapr_copy(
784 size_t len)
785{
786 /* Return as high an integer as possible */
787 return INT_MAX;
788}
789#endif
790
791static int
792dopr_isbig(
793 size_t currlen,
794 size_t maxlen)
795{
796 return currlen > maxlen;
797}
798
799#ifdef USE_ALLOCATING_PRINT
800static int
801doapr_isbig(
802 size_t currlen,
803 size_t maxlen)
804{
805 return 0;
806}
807#endif
808
809static void
810dopr_outch(
811 char **buffer,
812 size_t *currlen,
813 size_t *maxlen,
814 int c)
815{
816 if (*currlen < *maxlen)
817 (*buffer)[(*currlen)++] = (char)c;
818 return;
819}
820
821#ifdef USE_ALLOCATING_PRINT
822static void
823doapr_outch(
824 char **buffer,
825 size_t *currlen,
826 size_t *maxlen,
827 int c)
828{
829 if (*buffer == NULL) {
830 if (*maxlen == 0)
831 *maxlen = 1024;
832 *buffer = Malloc(*maxlen);
833 }
834 while (*currlen >= *maxlen) {
835 *maxlen += 1024;
836 *buffer = Realloc(*buffer, *maxlen);
837 }
838 /* What to do if *buffer is NULL? */
839 assert(*buffer != NULL);
840
841 (*buffer)[(*currlen)++] = (char)c;
842 return;
843}
844#endif
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-05-03 18:06:32 +0000