Line data Source code
1 : /*
2 : * Copyright (c) 1983, 1995, 1996 Eric P. Allman
3 : * Copyright (c) 1988, 1993
4 : * The Regents of the University of California. All rights reserved.
5 : * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
6 : *
7 : * Redistribution and use in source and binary forms, with or without
8 : * modification, are permitted provided that the following conditions
9 : * are met:
10 : * 1. Redistributions of source code must retain the above copyright
11 : * notice, this list of conditions and the following disclaimer.
12 : * 2. Redistributions in binary form must reproduce the above copyright
13 : * notice, this list of conditions and the following disclaimer in the
14 : * documentation and/or other materials provided with the distribution.
15 : * 3. Neither the name of the University nor the names of its contributors
16 : * may be used to endorse or promote products derived from this software
17 : * without specific prior written permission.
18 : *
19 : * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 : * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 : * SUCH DAMAGE.
30 : *
31 : * src/port/snprintf.c
32 : */
33 :
34 : #include "c.h"
35 :
36 : #include <math.h>
37 :
38 : /*
39 : * We used to use the platform's NL_ARGMAX here, but that's a bad idea,
40 : * first because the point of this module is to remove platform dependencies
41 : * not perpetuate them, and second because some platforms use ridiculously
42 : * large values, leading to excessive stack consumption in dopr().
43 : */
44 : #define PG_NL_ARGMAX 31
45 :
46 :
47 : /*
48 : * SNPRINTF, VSNPRINTF and friends
49 : *
50 : * These versions have been grabbed off the net. They have been
51 : * cleaned up to compile properly and support for most of the C99
52 : * specification has been added. Remaining unimplemented features are:
53 : *
54 : * 1. No locale support: the radix character is always '.' and the '
55 : * (single quote) format flag is ignored.
56 : *
57 : * 2. No support for the "%n" format specification.
58 : *
59 : * 3. No support for wide characters ("lc" and "ls" formats).
60 : *
61 : * 4. No support for "long double" ("Lf" and related formats).
62 : *
63 : * 5. Space and '#' flags are not implemented.
64 : *
65 : * In addition, we support some extensions over C99:
66 : *
67 : * 1. Argument order control through "%n$" and "*n$", as required by POSIX.
68 : *
69 : * 2. "%m" expands to the value of strerror(errno), where errno is the
70 : * value that variable had at the start of the call. This is a glibc
71 : * extension, but a very useful one.
72 : *
73 : *
74 : * Historically the result values of sprintf/snprintf varied across platforms.
75 : * This implementation now follows the C99 standard:
76 : *
77 : * 1. -1 is returned if an error is detected in the format string, or if
78 : * a write to the target stream fails (as reported by fwrite). Note that
79 : * overrunning snprintf's target buffer is *not* an error.
80 : *
81 : * 2. For successful writes to streams, the actual number of bytes written
82 : * to the stream is returned.
83 : *
84 : * 3. For successful sprintf/snprintf, the number of bytes that would have
85 : * been written to an infinite-size buffer (excluding the trailing '\0')
86 : * is returned. snprintf will truncate its output to fit in the buffer
87 : * (ensuring a trailing '\0' unless count == 0), but this is not reflected
88 : * in the function result.
89 : *
90 : * snprintf buffer overrun can be detected by checking for function result
91 : * greater than or equal to the supplied count.
92 : */
93 :
94 : /**************************************************************
95 : * Original:
96 : * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
97 : * A bombproof version of doprnt (dopr) included.
98 : * Sigh. This sort of thing is always nasty do deal with. Note that
99 : * the version here does not include floating point. (now it does ... tgl)
100 : **************************************************************/
101 :
102 : /* Prevent recursion */
103 : #undef vsnprintf
104 : #undef snprintf
105 : #undef vsprintf
106 : #undef sprintf
107 : #undef vfprintf
108 : #undef fprintf
109 : #undef vprintf
110 : #undef printf
111 :
112 : /*
113 : * Info about where the formatted output is going.
114 : *
115 : * dopr and subroutines will not write at/past bufend, but snprintf
116 : * reserves one byte, ensuring it may place the trailing '\0' there.
117 : *
118 : * In snprintf, we use nchars to count the number of bytes dropped on the
119 : * floor due to buffer overrun. The correct result of snprintf is thus
120 : * (bufptr - bufstart) + nchars. (This isn't as inconsistent as it might
121 : * seem: nchars is the number of emitted bytes that are not in the buffer now,
122 : * either because we sent them to the stream or because we couldn't fit them
123 : * into the buffer to begin with.)
124 : */
125 : typedef struct
126 : {
127 : char *bufptr; /* next buffer output position */
128 : char *bufstart; /* first buffer element */
129 : char *bufend; /* last+1 buffer element, or NULL */
130 : /* bufend == NULL is for sprintf, where we assume buf is big enough */
131 : FILE *stream; /* eventual output destination, or NULL */
132 : int nchars; /* # chars sent to stream, or dropped */
133 : bool failed; /* call is a failure; errno is set */
134 : } PrintfTarget;
135 :
136 : /*
137 : * Info about the type and value of a formatting parameter. Note that we
138 : * don't currently support "long double", "wint_t", or "wchar_t *" data,
139 : * nor the '%n' formatting code; else we'd need more types. Also, at this
140 : * level we need not worry about signed vs unsigned values.
141 : */
142 : typedef enum
143 : {
144 : ATYPE_NONE = 0,
145 : ATYPE_INT,
146 : ATYPE_LONG,
147 : ATYPE_LONGLONG,
148 : ATYPE_DOUBLE,
149 : ATYPE_CHARPTR
150 : } PrintfArgType;
151 :
152 : typedef union
153 : {
154 : int i;
155 : long l;
156 : long long ll;
157 : double d;
158 : char *cptr;
159 : } PrintfArgValue;
160 :
161 :
162 : static void flushbuffer(PrintfTarget *target);
163 : static void dopr(PrintfTarget *target, const char *format, va_list args);
164 :
165 :
166 : /*
167 : * Externally visible entry points.
168 : *
169 : * All of these are just wrappers around dopr(). Note it's essential that
170 : * they not change the value of "errno" before reaching dopr().
171 : */
172 :
173 : int
174 517481244 : pg_vsnprintf(char *str, size_t count, const char *fmt, va_list args)
175 : {
176 : PrintfTarget target;
177 : char onebyte[1];
178 :
179 : /*
180 : * C99 allows the case str == NULL when count == 0. Rather than
181 : * special-casing this situation further down, we substitute a one-byte
182 : * local buffer. Callers cannot tell, since the function result doesn't
183 : * depend on count.
184 : */
185 517481244 : if (count == 0)
186 : {
187 256798 : str = onebyte;
188 256798 : count = 1;
189 : }
190 517481244 : target.bufstart = target.bufptr = str;
191 517481244 : target.bufend = str + count - 1;
192 517481244 : target.stream = NULL;
193 517481244 : target.nchars = 0;
194 517481244 : target.failed = false;
195 517481244 : dopr(&target, fmt, args);
196 517481242 : *(target.bufptr) = '\0';
197 1034962484 : return target.failed ? -1 : (target.bufptr - target.bufstart
198 517481242 : + target.nchars);
199 : }
200 :
201 : int
202 45375930 : pg_snprintf(char *str, size_t count, const char *fmt,...)
203 : {
204 : int len;
205 : va_list args;
206 :
207 45375930 : va_start(args, fmt);
208 45375930 : len = pg_vsnprintf(str, count, fmt, args);
209 45375924 : va_end(args);
210 45375924 : return len;
211 : }
212 :
213 : int
214 17605646 : pg_vsprintf(char *str, const char *fmt, va_list args)
215 : {
216 : PrintfTarget target;
217 :
218 17605646 : target.bufstart = target.bufptr = str;
219 17605646 : target.bufend = NULL;
220 17605646 : target.stream = NULL;
221 17605646 : target.nchars = 0; /* not really used in this case */
222 17605646 : target.failed = false;
223 17605646 : dopr(&target, fmt, args);
224 17605660 : *(target.bufptr) = '\0';
225 35211320 : return target.failed ? -1 : (target.bufptr - target.bufstart
226 17605660 : + target.nchars);
227 : }
228 :
229 : int
230 17605648 : pg_sprintf(char *str, const char *fmt,...)
231 : {
232 : int len;
233 : va_list args;
234 :
235 17605648 : va_start(args, fmt);
236 17605648 : len = pg_vsprintf(str, fmt, args);
237 17605660 : va_end(args);
238 17605660 : return len;
239 : }
240 :
241 : int
242 4667244 : pg_vfprintf(FILE *stream, const char *fmt, va_list args)
243 : {
244 : PrintfTarget target;
245 : char buffer[1024]; /* size is arbitrary */
246 :
247 4667244 : if (stream == NULL)
248 : {
249 0 : errno = EINVAL;
250 0 : return -1;
251 : }
252 4667244 : target.bufstart = target.bufptr = buffer;
253 4667244 : target.bufend = buffer + sizeof(buffer); /* use the whole buffer */
254 4667244 : target.stream = stream;
255 4667244 : target.nchars = 0;
256 4667244 : target.failed = false;
257 4667244 : dopr(&target, fmt, args);
258 : /* dump any remaining buffer contents */
259 4667244 : flushbuffer(&target);
260 4667244 : return target.failed ? -1 : target.nchars;
261 : }
262 :
263 : int
264 2412728 : pg_fprintf(FILE *stream, const char *fmt,...)
265 : {
266 : int len;
267 : va_list args;
268 :
269 2412728 : va_start(args, fmt);
270 2412728 : len = pg_vfprintf(stream, fmt, args);
271 2412728 : va_end(args);
272 2412728 : return len;
273 : }
274 :
275 : int
276 0 : pg_vprintf(const char *fmt, va_list args)
277 : {
278 0 : return pg_vfprintf(stdout, fmt, args);
279 : }
280 :
281 : int
282 2231194 : pg_printf(const char *fmt,...)
283 : {
284 : int len;
285 : va_list args;
286 :
287 2231194 : va_start(args, fmt);
288 2231194 : len = pg_vfprintf(stdout, fmt, args);
289 2231194 : va_end(args);
290 2231194 : return len;
291 : }
292 :
293 : /*
294 : * Attempt to write the entire buffer to target->stream; discard the entire
295 : * buffer in any case. Call this only when target->stream is defined.
296 : */
297 : static void
298 4667854 : flushbuffer(PrintfTarget *target)
299 : {
300 4667854 : size_t nc = target->bufptr - target->bufstart;
301 :
302 : /*
303 : * Don't write anything if we already failed; this is to ensure we
304 : * preserve the original failure's errno.
305 : */
306 4667854 : if (!target->failed && nc > 0)
307 : {
308 : size_t written;
309 :
310 4399508 : written = fwrite(target->bufstart, 1, nc, target->stream);
311 4399508 : target->nchars += written;
312 4399508 : if (written != nc)
313 0 : target->failed = true;
314 : }
315 4667854 : target->bufptr = target->bufstart;
316 4667854 : }
317 :
318 :
319 : static bool find_arguments(const char *format, va_list args,
320 : PrintfArgValue *argvalues);
321 : static void fmtstr(const char *value, int leftjust, int minlen, int maxwidth,
322 : int pointflag, PrintfTarget *target);
323 : static void fmtptr(const void *value, PrintfTarget *target);
324 : static void fmtint(long long value, char type, int forcesign,
325 : int leftjust, int minlen, int zpad, int precision, int pointflag,
326 : PrintfTarget *target);
327 : static void fmtchar(int value, int leftjust, int minlen, PrintfTarget *target);
328 : static void fmtfloat(double value, char type, int forcesign,
329 : int leftjust, int minlen, int zpad, int precision, int pointflag,
330 : PrintfTarget *target);
331 : static void dostr(const char *str, int slen, PrintfTarget *target);
332 : static void dopr_outch(int c, PrintfTarget *target);
333 : static void dopr_outchmulti(int c, int slen, PrintfTarget *target);
334 : static int adjust_sign(int is_negative, int forcesign, int *signvalue);
335 : static int compute_padlen(int minlen, int vallen, int leftjust);
336 : static void leading_pad(int zpad, int signvalue, int *padlen,
337 : PrintfTarget *target);
338 : static void trailing_pad(int padlen, PrintfTarget *target);
339 :
340 : /*
341 : * If strchrnul exists (it's a glibc-ism, but since adopted by some other
342 : * platforms), it's a good bit faster than the equivalent manual loop.
343 : * Use it if possible, and if it doesn't exist, use this replacement.
344 : *
345 : * Note: glibc declares this as returning "char *", but that would require
346 : * casting away const internally, so we don't follow that detail.
347 : *
348 : * Note: macOS has this too as of Sequoia 15.4, but it's hidden behind
349 : * a deployment-target check that causes compile errors if the deployment
350 : * target isn't high enough. So !HAVE_DECL_STRCHRNUL may mean "yes it's
351 : * declared, but it doesn't compile". To avoid failing in that scenario,
352 : * use a macro to avoid matching <string.h>'s name.
353 : */
354 : #if !HAVE_DECL_STRCHRNUL
355 :
356 : #define strchrnul pg_strchrnul
357 :
358 : static inline const char *
359 : strchrnul(const char *s, int c)
360 : {
361 : while (*s != '\0' && *s != c)
362 : s++;
363 : return s;
364 : }
365 :
366 : #endif /* !HAVE_DECL_STRCHRNUL */
367 :
368 :
369 : /*
370 : * dopr(): the guts of *printf for all cases.
371 : */
372 : static void
373 539754130 : dopr(PrintfTarget *target, const char *format, va_list args)
374 : {
375 539754130 : int save_errno = errno;
376 539754130 : const char *first_pct = NULL;
377 : int ch;
378 : bool have_dollar;
379 : bool have_star;
380 : bool afterstar;
381 : int accum;
382 : int longlongflag;
383 : int longflag;
384 : int pointflag;
385 : int leftjust;
386 : int fieldwidth;
387 : int precision;
388 : int zpad;
389 : int forcesign;
390 : int fmtpos;
391 : int cvalue;
392 : long long numvalue;
393 : double fvalue;
394 : const char *strvalue;
395 : PrintfArgValue argvalues[PG_NL_ARGMAX + 1];
396 :
397 : /*
398 : * Initially, we suppose the format string does not use %n$. The first
399 : * time we come to a conversion spec that has that, we'll call
400 : * find_arguments() to check for consistent use of %n$ and fill the
401 : * argvalues array with the argument values in the correct order.
402 : */
403 539754130 : have_dollar = false;
404 :
405 1114015104 : while (*format != '\0')
406 : {
407 : /* Locate next conversion specifier */
408 727741366 : if (*format != '%')
409 : {
410 : /* Scan to next '%' or end of string */
411 525289068 : const char *next_pct = strchrnul(format + 1, '%');
412 :
413 : /* Dump literal data we just scanned over */
414 525289068 : dostr(format, next_pct - format, target);
415 525289078 : if (target->failed)
416 0 : break;
417 :
418 525289078 : if (*next_pct == '\0')
419 153480388 : break;
420 371808690 : format = next_pct;
421 : }
422 :
423 : /*
424 : * Remember start of first conversion spec; if we find %n$, then it's
425 : * sufficient for find_arguments() to start here, without rescanning
426 : * earlier literal text.
427 : */
428 574260988 : if (first_pct == NULL)
429 531637056 : first_pct = format;
430 :
431 : /* Process conversion spec starting at *format */
432 574260988 : format++;
433 :
434 : /* Fast path for conversion spec that is exactly %s */
435 574260988 : if (*format == 's')
436 : {
437 95412842 : format++;
438 95412842 : strvalue = va_arg(args, char *);
439 95412840 : if (strvalue == NULL)
440 8 : strvalue = "(null)";
441 95412840 : dostr(strvalue, strlen(strvalue), target);
442 95412842 : if (target->failed)
443 0 : break;
444 95412842 : continue;
445 : }
446 :
447 478848146 : fieldwidth = precision = zpad = leftjust = forcesign = 0;
448 478848146 : longflag = longlongflag = pointflag = 0;
449 478848146 : fmtpos = accum = 0;
450 478848146 : have_star = afterstar = false;
451 80342520 : nextch2:
452 559190666 : ch = *format++;
453 559190666 : switch (ch)
454 : {
455 1110724 : case '-':
456 1110724 : leftjust = 1;
457 1110724 : goto nextch2;
458 282 : case '+':
459 282 : forcesign = 1;
460 282 : goto nextch2;
461 30728918 : case '0':
462 : /* set zero padding if no nonzero digits yet */
463 30728918 : if (accum == 0 && !pointflag)
464 30160360 : zpad = '0';
465 : /* FALL THRU */
466 : case '1':
467 : case '2':
468 : case '3':
469 : case '4':
470 : case '5':
471 : case '6':
472 : case '7':
473 : case '8':
474 : case '9':
475 64614072 : accum = accum * 10 + (ch - '0');
476 64614072 : goto nextch2;
477 1105600 : case '.':
478 1105600 : if (have_star)
479 940 : have_star = false;
480 : else
481 1104660 : fieldwidth = accum;
482 1105600 : pointflag = 1;
483 1105600 : accum = 0;
484 1105600 : goto nextch2;
485 1480456 : case '*':
486 1480456 : if (have_dollar)
487 : {
488 : /*
489 : * We'll process value after reading n$. Note it's OK to
490 : * assume have_dollar is set correctly, because in a valid
491 : * format string the initial % must have had n$ if * does.
492 : */
493 0 : afterstar = true;
494 : }
495 : else
496 : {
497 : /* fetch and process value now */
498 1480456 : int starval = va_arg(args, int);
499 :
500 1480456 : if (pointflag)
501 : {
502 61208 : precision = starval;
503 61208 : if (precision < 0)
504 : {
505 0 : precision = 0;
506 0 : pointflag = 0;
507 : }
508 : }
509 : else
510 : {
511 1419248 : fieldwidth = starval;
512 1419248 : if (fieldwidth < 0)
513 : {
514 5646 : leftjust = 1;
515 5646 : fieldwidth = -fieldwidth;
516 : }
517 : }
518 : }
519 1480456 : have_star = true;
520 1480456 : accum = 0;
521 1480456 : goto nextch2;
522 0 : case '$':
523 : /* First dollar sign? */
524 0 : if (!have_dollar)
525 : {
526 : /* Yup, so examine all conversion specs in format */
527 0 : if (!find_arguments(first_pct, args, argvalues))
528 10 : goto bad_format;
529 0 : have_dollar = true;
530 : }
531 0 : if (afterstar)
532 : {
533 : /* fetch and process star value */
534 0 : int starval = argvalues[accum].i;
535 :
536 0 : if (pointflag)
537 : {
538 0 : precision = starval;
539 0 : if (precision < 0)
540 : {
541 0 : precision = 0;
542 0 : pointflag = 0;
543 : }
544 : }
545 : else
546 : {
547 0 : fieldwidth = starval;
548 0 : if (fieldwidth < 0)
549 : {
550 0 : leftjust = 1;
551 0 : fieldwidth = -fieldwidth;
552 : }
553 : }
554 0 : afterstar = false;
555 : }
556 : else
557 0 : fmtpos = accum;
558 0 : accum = 0;
559 0 : goto nextch2;
560 9074192 : case 'l':
561 9074192 : if (longflag)
562 8814 : longlongflag = 1;
563 : else
564 9065378 : longflag = 1;
565 9074192 : goto nextch2;
566 0 : case 'j':
567 : #if SIZEOF_INTMAX_T == SIZEOF_LONG
568 0 : longflag = 1;
569 : #elif SIZEOF_INTMAX_T == SIZEOF_LONG_LONG
570 : longlongflag = 1;
571 : #else
572 : #error "cannot find integer type of the same size as intmax_t"
573 : #endif
574 0 : goto nextch2;
575 2957116 : case 'z':
576 : #if SIZEOF_SIZE_T == SIZEOF_LONG
577 2957116 : longflag = 1;
578 : #elif SIZEOF_SIZE_T == SIZEOF_LONG_LONG
579 : longlongflag = 1;
580 : #else
581 : #error "cannot find integer type of the same size as size_t"
582 : #endif
583 2957116 : goto nextch2;
584 88 : case 'h':
585 : case '\'':
586 : /* ignore these */
587 88 : goto nextch2;
588 320634050 : case 'd':
589 : case 'i':
590 320634050 : if (!have_star)
591 : {
592 320592968 : if (pointflag)
593 0 : precision = accum;
594 : else
595 320592968 : fieldwidth = accum;
596 : }
597 320634050 : if (have_dollar)
598 : {
599 0 : if (longlongflag)
600 0 : numvalue = argvalues[fmtpos].ll;
601 0 : else if (longflag)
602 0 : numvalue = argvalues[fmtpos].l;
603 : else
604 0 : numvalue = argvalues[fmtpos].i;
605 : }
606 : else
607 : {
608 320634050 : if (longlongflag)
609 8778 : numvalue = va_arg(args, long long);
610 320625272 : else if (longflag)
611 7240480 : numvalue = va_arg(args, long);
612 : else
613 313384792 : numvalue = va_arg(args, int);
614 : }
615 320634050 : fmtint(numvalue, ch, forcesign, leftjust, fieldwidth, zpad,
616 : precision, pointflag, target);
617 320634058 : break;
618 154242888 : case 'o':
619 : case 'u':
620 : case 'x':
621 : case 'X':
622 154242888 : if (!have_star)
623 : {
624 154242888 : if (pointflag)
625 0 : precision = accum;
626 : else
627 154242888 : fieldwidth = accum;
628 : }
629 154242888 : if (have_dollar)
630 : {
631 0 : if (longlongflag)
632 0 : numvalue = (unsigned long long) argvalues[fmtpos].ll;
633 0 : else if (longflag)
634 0 : numvalue = (unsigned long) argvalues[fmtpos].l;
635 : else
636 0 : numvalue = (unsigned int) argvalues[fmtpos].i;
637 : }
638 : else
639 : {
640 154242888 : if (longlongflag)
641 36 : numvalue = (unsigned long long) va_arg(args, long long);
642 154242852 : else if (longflag)
643 4773200 : numvalue = (unsigned long) va_arg(args, long);
644 : else
645 149469652 : numvalue = (unsigned int) va_arg(args, int);
646 : }
647 154242888 : fmtint(numvalue, ch, forcesign, leftjust, fieldwidth, zpad,
648 : precision, pointflag, target);
649 154242888 : break;
650 40582 : case 'c':
651 40582 : if (!have_star)
652 : {
653 40540 : if (pointflag)
654 0 : precision = accum;
655 : else
656 40540 : fieldwidth = accum;
657 : }
658 40582 : if (have_dollar)
659 0 : cvalue = (unsigned char) argvalues[fmtpos].i;
660 : else
661 40582 : cvalue = (unsigned char) va_arg(args, int);
662 40582 : fmtchar(cvalue, leftjust, fieldwidth, target);
663 40582 : break;
664 1987282 : case 's':
665 1987282 : if (!have_star)
666 : {
667 589340 : if (pointflag)
668 0 : precision = accum;
669 : else
670 589340 : fieldwidth = accum;
671 : }
672 1987282 : if (have_dollar)
673 0 : strvalue = argvalues[fmtpos].cptr;
674 : else
675 1987282 : strvalue = va_arg(args, char *);
676 : /* If string is NULL, silently substitute "(null)" */
677 1987282 : if (strvalue == NULL)
678 0 : strvalue = "(null)";
679 1987282 : fmtstr(strvalue, leftjust, fieldwidth, precision, pointflag,
680 : target);
681 1987282 : break;
682 296 : case 'p':
683 : /* fieldwidth/leftjust are ignored ... */
684 296 : if (have_dollar)
685 0 : strvalue = argvalues[fmtpos].cptr;
686 : else
687 296 : strvalue = va_arg(args, char *);
688 296 : fmtptr((const void *) strvalue, target);
689 296 : break;
690 1535284 : case 'e':
691 : case 'E':
692 : case 'f':
693 : case 'g':
694 : case 'G':
695 1535284 : if (!have_star)
696 : {
697 1494836 : if (pointflag)
698 1044392 : precision = accum;
699 : else
700 450444 : fieldwidth = accum;
701 : }
702 1535284 : if (have_dollar)
703 0 : fvalue = argvalues[fmtpos].d;
704 : else
705 1535284 : fvalue = va_arg(args, double);
706 1535284 : fmtfloat(fvalue, ch, forcesign, leftjust,
707 : fieldwidth, zpad,
708 : precision, pointflag,
709 : target);
710 1535284 : break;
711 494 : case 'm':
712 : {
713 : char errbuf[PG_STRERROR_R_BUFLEN];
714 494 : const char *errm = strerror_r(save_errno,
715 : errbuf, sizeof(errbuf));
716 :
717 494 : dostr(errm, strlen(errm), target);
718 : }
719 484 : break;
720 407260 : case '%':
721 407260 : dopr_outch('%', target);
722 407260 : break;
723 0 : default:
724 :
725 : /*
726 : * Anything else --- in particular, '\0' indicating end of
727 : * format string --- is bogus.
728 : */
729 0 : goto bad_format;
730 : }
731 :
732 : /* Check for failure after each conversion spec */
733 478848132 : if (target->failed)
734 0 : break;
735 : }
736 :
737 539754126 : return;
738 :
739 10 : bad_format:
740 10 : errno = EINVAL;
741 10 : target->failed = true;
742 : }
743 :
744 : /*
745 : * find_arguments(): sort out the arguments for a format spec with %n$
746 : *
747 : * If format is valid, return true and fill argvalues[i] with the value
748 : * for the conversion spec that has %i$ or *i$. Else return false.
749 : */
750 : static bool
751 0 : find_arguments(const char *format, va_list args,
752 : PrintfArgValue *argvalues)
753 : {
754 : int ch;
755 : bool afterstar;
756 : int accum;
757 : int longlongflag;
758 : int longflag;
759 : int fmtpos;
760 : int i;
761 0 : int last_dollar = 0; /* Init to "no dollar arguments known" */
762 0 : PrintfArgType argtypes[PG_NL_ARGMAX + 1] = {0};
763 :
764 : /*
765 : * This loop must accept the same format strings as the one in dopr().
766 : * However, we don't need to analyze them to the same level of detail.
767 : *
768 : * Since we're only called if there's a dollar-type spec somewhere, we can
769 : * fail immediately if we find a non-dollar spec. Per the C99 standard,
770 : * all argument references in the format string must be one or the other.
771 : */
772 0 : while (*format != '\0')
773 : {
774 : /* Locate next conversion specifier */
775 0 : if (*format != '%')
776 : {
777 : /* Unlike dopr, we can just quit if there's no more specifiers */
778 0 : format = strchr(format + 1, '%');
779 0 : if (format == NULL)
780 0 : break;
781 : }
782 :
783 : /* Process conversion spec starting at *format */
784 0 : format++;
785 0 : longflag = longlongflag = 0;
786 0 : fmtpos = accum = 0;
787 0 : afterstar = false;
788 0 : nextch1:
789 0 : ch = *format++;
790 0 : switch (ch)
791 : {
792 0 : case '-':
793 : case '+':
794 0 : goto nextch1;
795 0 : case '0':
796 : case '1':
797 : case '2':
798 : case '3':
799 : case '4':
800 : case '5':
801 : case '6':
802 : case '7':
803 : case '8':
804 : case '9':
805 0 : accum = accum * 10 + (ch - '0');
806 0 : goto nextch1;
807 0 : case '.':
808 0 : accum = 0;
809 0 : goto nextch1;
810 0 : case '*':
811 0 : if (afterstar)
812 0 : return false; /* previous star missing dollar */
813 0 : afterstar = true;
814 0 : accum = 0;
815 0 : goto nextch1;
816 0 : case '$':
817 0 : if (accum <= 0 || accum > PG_NL_ARGMAX)
818 0 : return false;
819 0 : if (afterstar)
820 : {
821 0 : if (argtypes[accum] &&
822 0 : argtypes[accum] != ATYPE_INT)
823 0 : return false;
824 0 : argtypes[accum] = ATYPE_INT;
825 0 : last_dollar = Max(last_dollar, accum);
826 0 : afterstar = false;
827 : }
828 : else
829 0 : fmtpos = accum;
830 0 : accum = 0;
831 0 : goto nextch1;
832 0 : case 'l':
833 0 : if (longflag)
834 0 : longlongflag = 1;
835 : else
836 0 : longflag = 1;
837 0 : goto nextch1;
838 0 : case 'j':
839 : #if SIZEOF_INTMAX_T == SIZEOF_LONG
840 0 : longflag = 1;
841 : #elif SIZEOF_INTMAX_T == SIZEOF_LONG_LONG
842 : longlongflag = 1;
843 : #else
844 : #error "cannot find integer type of the same size as intmax_t"
845 : #endif
846 0 : goto nextch1;
847 0 : case 'z':
848 : #if SIZEOF_SIZE_T == SIZEOF_LONG
849 0 : longflag = 1;
850 : #elif SIZEOF_SIZE_T == SIZEOF_LONG_LONG
851 : longlongflag = 1;
852 : #else
853 : #error "cannot find integer type of the same size as size_t"
854 : #endif
855 0 : goto nextch1;
856 0 : case 'h':
857 : case '\'':
858 : /* ignore these */
859 0 : goto nextch1;
860 0 : case 'd':
861 : case 'i':
862 : case 'o':
863 : case 'u':
864 : case 'x':
865 : case 'X':
866 0 : if (fmtpos)
867 : {
868 : PrintfArgType atype;
869 :
870 0 : if (longlongflag)
871 0 : atype = ATYPE_LONGLONG;
872 0 : else if (longflag)
873 0 : atype = ATYPE_LONG;
874 : else
875 0 : atype = ATYPE_INT;
876 0 : if (argtypes[fmtpos] &&
877 0 : argtypes[fmtpos] != atype)
878 0 : return false;
879 0 : argtypes[fmtpos] = atype;
880 0 : last_dollar = Max(last_dollar, fmtpos);
881 : }
882 : else
883 0 : return false; /* non-dollar conversion spec */
884 0 : break;
885 0 : case 'c':
886 0 : if (fmtpos)
887 : {
888 0 : if (argtypes[fmtpos] &&
889 0 : argtypes[fmtpos] != ATYPE_INT)
890 0 : return false;
891 0 : argtypes[fmtpos] = ATYPE_INT;
892 0 : last_dollar = Max(last_dollar, fmtpos);
893 : }
894 : else
895 0 : return false; /* non-dollar conversion spec */
896 0 : break;
897 0 : case 's':
898 : case 'p':
899 0 : if (fmtpos)
900 : {
901 0 : if (argtypes[fmtpos] &&
902 0 : argtypes[fmtpos] != ATYPE_CHARPTR)
903 0 : return false;
904 0 : argtypes[fmtpos] = ATYPE_CHARPTR;
905 0 : last_dollar = Max(last_dollar, fmtpos);
906 : }
907 : else
908 0 : return false; /* non-dollar conversion spec */
909 0 : break;
910 0 : case 'e':
911 : case 'E':
912 : case 'f':
913 : case 'g':
914 : case 'G':
915 0 : if (fmtpos)
916 : {
917 0 : if (argtypes[fmtpos] &&
918 0 : argtypes[fmtpos] != ATYPE_DOUBLE)
919 0 : return false;
920 0 : argtypes[fmtpos] = ATYPE_DOUBLE;
921 0 : last_dollar = Max(last_dollar, fmtpos);
922 : }
923 : else
924 0 : return false; /* non-dollar conversion spec */
925 0 : break;
926 0 : case 'm':
927 : case '%':
928 0 : break;
929 0 : default:
930 0 : return false; /* bogus format string */
931 : }
932 :
933 : /*
934 : * If we finish the spec with afterstar still set, there's a
935 : * non-dollar star in there.
936 : */
937 0 : if (afterstar)
938 0 : return false; /* non-dollar conversion spec */
939 : }
940 :
941 : /*
942 : * Format appears valid so far, so collect the arguments in physical
943 : * order. (Since we rejected any non-dollar specs that would have
944 : * collected arguments, we know that dopr() hasn't collected any yet.)
945 : */
946 0 : for (i = 1; i <= last_dollar; i++)
947 : {
948 0 : switch (argtypes[i])
949 : {
950 0 : case ATYPE_NONE:
951 0 : return false;
952 0 : case ATYPE_INT:
953 0 : argvalues[i].i = va_arg(args, int);
954 0 : break;
955 0 : case ATYPE_LONG:
956 0 : argvalues[i].l = va_arg(args, long);
957 0 : break;
958 0 : case ATYPE_LONGLONG:
959 0 : argvalues[i].ll = va_arg(args, long long);
960 0 : break;
961 0 : case ATYPE_DOUBLE:
962 0 : argvalues[i].d = va_arg(args, double);
963 0 : break;
964 0 : case ATYPE_CHARPTR:
965 0 : argvalues[i].cptr = va_arg(args, char *);
966 0 : break;
967 : }
968 : }
969 :
970 0 : return true;
971 : }
972 :
973 : static void
974 1987282 : fmtstr(const char *value, int leftjust, int minlen, int maxwidth,
975 : int pointflag, PrintfTarget *target)
976 : {
977 : int padlen,
978 : vallen; /* amount to pad */
979 :
980 : /*
981 : * If a maxwidth (precision) is specified, we must not fetch more bytes
982 : * than that.
983 : */
984 1987282 : if (pointflag)
985 20760 : vallen = strnlen(value, maxwidth);
986 : else
987 1966522 : vallen = strlen(value);
988 :
989 1987282 : padlen = compute_padlen(minlen, vallen, leftjust);
990 :
991 1987282 : if (padlen > 0)
992 : {
993 600664 : dopr_outchmulti(' ', padlen, target);
994 600664 : padlen = 0;
995 : }
996 :
997 1987282 : dostr(value, vallen, target);
998 :
999 1987282 : trailing_pad(padlen, target);
1000 1987282 : }
1001 :
1002 : static void
1003 296 : fmtptr(const void *value, PrintfTarget *target)
1004 : {
1005 : int vallen;
1006 : char convert[64];
1007 :
1008 : /* we rely on regular C library's snprintf to do the basic conversion */
1009 296 : vallen = snprintf(convert, sizeof(convert), "%p", value);
1010 296 : if (vallen < 0)
1011 0 : target->failed = true;
1012 : else
1013 296 : dostr(convert, vallen, target);
1014 296 : }
1015 :
1016 : static void
1017 474876936 : fmtint(long long value, char type, int forcesign, int leftjust,
1018 : int minlen, int zpad, int precision, int pointflag,
1019 : PrintfTarget *target)
1020 : {
1021 : unsigned long long uvalue;
1022 : int base;
1023 : int dosign;
1024 474876936 : const char *cvt = "0123456789abcdef";
1025 474876936 : int signvalue = 0;
1026 : char convert[64];
1027 474876936 : int vallen = 0;
1028 : int padlen; /* amount to pad */
1029 : int zeropad; /* extra leading zeroes */
1030 :
1031 474876936 : switch (type)
1032 : {
1033 320634048 : case 'd':
1034 : case 'i':
1035 320634048 : base = 10;
1036 320634048 : dosign = 1;
1037 320634048 : break;
1038 11174 : case 'o':
1039 11174 : base = 8;
1040 11174 : dosign = 0;
1041 11174 : break;
1042 135918568 : case 'u':
1043 135918568 : base = 10;
1044 135918568 : dosign = 0;
1045 135918568 : break;
1046 69726 : case 'x':
1047 69726 : base = 16;
1048 69726 : dosign = 0;
1049 69726 : break;
1050 18243420 : case 'X':
1051 18243420 : cvt = "0123456789ABCDEF";
1052 18243420 : base = 16;
1053 18243420 : dosign = 0;
1054 18243420 : break;
1055 0 : default:
1056 0 : return; /* keep compiler quiet */
1057 : }
1058 :
1059 : /* disable MSVC warning about applying unary minus to an unsigned value */
1060 : #ifdef _MSC_VER
1061 : #pragma warning(push)
1062 : #pragma warning(disable: 4146)
1063 : #endif
1064 : /* Handle +/- */
1065 474876936 : if (dosign && adjust_sign((value < 0), forcesign, &signvalue))
1066 34568674 : uvalue = -(unsigned long long) value;
1067 : else
1068 440308258 : uvalue = (unsigned long long) value;
1069 : #ifdef _MSC_VER
1070 : #pragma warning(pop)
1071 : #endif
1072 :
1073 : /*
1074 : * SUS: the result of converting 0 with an explicit precision of 0 is no
1075 : * characters
1076 : */
1077 474876932 : if (value == 0 && pointflag && precision == 0)
1078 0 : vallen = 0;
1079 : else
1080 : {
1081 : /*
1082 : * Convert integer to string. We special-case each of the possible
1083 : * base values so as to avoid general-purpose divisions. On most
1084 : * machines, division by a fixed constant can be done much more
1085 : * cheaply than a general divide.
1086 : */
1087 474876932 : if (base == 10)
1088 : {
1089 : do
1090 : {
1091 781657106 : convert[sizeof(convert) - (++vallen)] = cvt[uvalue % 10];
1092 781657106 : uvalue = uvalue / 10;
1093 781657106 : } while (uvalue);
1094 : }
1095 18324320 : else if (base == 16)
1096 : {
1097 : do
1098 : {
1099 69211224 : convert[sizeof(convert) - (++vallen)] = cvt[uvalue % 16];
1100 69211224 : uvalue = uvalue / 16;
1101 69211224 : } while (uvalue);
1102 : }
1103 : else /* base == 8 */
1104 : {
1105 : do
1106 : {
1107 33522 : convert[sizeof(convert) - (++vallen)] = cvt[uvalue % 8];
1108 33522 : uvalue = uvalue / 8;
1109 33522 : } while (uvalue);
1110 : }
1111 : }
1112 :
1113 474876932 : zeropad = Max(0, precision - vallen);
1114 :
1115 474876932 : padlen = compute_padlen(minlen, vallen + zeropad, leftjust);
1116 :
1117 474876942 : leading_pad(zpad, signvalue, &padlen, target);
1118 :
1119 474876934 : if (zeropad > 0)
1120 0 : dopr_outchmulti('0', zeropad, target);
1121 :
1122 474876934 : dostr(convert + sizeof(convert) - vallen, vallen, target);
1123 :
1124 474876944 : trailing_pad(padlen, target);
1125 : }
1126 :
1127 : static void
1128 40582 : fmtchar(int value, int leftjust, int minlen, PrintfTarget *target)
1129 : {
1130 : int padlen; /* amount to pad */
1131 :
1132 40582 : padlen = compute_padlen(minlen, 1, leftjust);
1133 :
1134 40582 : if (padlen > 0)
1135 : {
1136 42 : dopr_outchmulti(' ', padlen, target);
1137 42 : padlen = 0;
1138 : }
1139 :
1140 40582 : dopr_outch(value, target);
1141 :
1142 40582 : trailing_pad(padlen, target);
1143 40582 : }
1144 :
1145 : static void
1146 1535284 : fmtfloat(double value, char type, int forcesign, int leftjust,
1147 : int minlen, int zpad, int precision, int pointflag,
1148 : PrintfTarget *target)
1149 : {
1150 1535284 : int signvalue = 0;
1151 : int prec;
1152 : int vallen;
1153 : char fmt[8];
1154 : char convert[1024];
1155 1535284 : int zeropadlen = 0; /* amount to pad with zeroes */
1156 : int padlen; /* amount to pad with spaces */
1157 :
1158 : /*
1159 : * We rely on the regular C library's snprintf to do the basic conversion,
1160 : * then handle padding considerations here.
1161 : *
1162 : * The dynamic range of "double" is about 1E+-308 for IEEE math, and not
1163 : * too wildly more than that with other hardware. In "f" format, snprintf
1164 : * could therefore generate at most 308 characters to the left of the
1165 : * decimal point; while we need to allow the precision to get as high as
1166 : * 308+17 to ensure that we don't truncate significant digits from very
1167 : * small values. To handle both these extremes, we use a buffer of 1024
1168 : * bytes and limit requested precision to 350 digits; this should prevent
1169 : * buffer overrun even with non-IEEE math. If the original precision
1170 : * request was more than 350, separately pad with zeroes.
1171 : *
1172 : * We handle infinities and NaNs specially to ensure platform-independent
1173 : * output.
1174 : */
1175 1535284 : if (precision < 0) /* cover possible overflow of "accum" */
1176 0 : precision = 0;
1177 1535284 : prec = Min(precision, 350);
1178 :
1179 1535284 : if (isnan(value))
1180 : {
1181 54 : strcpy(convert, "NaN");
1182 54 : vallen = 3;
1183 : /* no zero padding, regardless of precision spec */
1184 : }
1185 : else
1186 : {
1187 : /*
1188 : * Handle sign (NaNs have no sign, so we don't do this in the case
1189 : * above). "value < 0.0" will not be true for IEEE minus zero, so we
1190 : * detect that by looking for the case where value equals 0.0
1191 : * according to == but not according to memcmp.
1192 : */
1193 : static const double dzero = 0.0;
1194 :
1195 3056220 : if (adjust_sign((value < 0.0 ||
1196 1520990 : (value == 0.0 &&
1197 485074 : memcmp(&value, &dzero, sizeof(double)) != 0)),
1198 : forcesign, &signvalue))
1199 14240 : value = -value;
1200 :
1201 1535230 : if (isinf(value))
1202 : {
1203 114 : strcpy(convert, "Infinity");
1204 114 : vallen = 8;
1205 : /* no zero padding, regardless of precision spec */
1206 : }
1207 1535116 : else if (pointflag)
1208 : {
1209 1084696 : zeropadlen = precision - prec;
1210 1084696 : fmt[0] = '%';
1211 1084696 : fmt[1] = '.';
1212 1084696 : fmt[2] = '*';
1213 1084696 : fmt[3] = type;
1214 1084696 : fmt[4] = '\0';
1215 1084696 : vallen = snprintf(convert, sizeof(convert), fmt, prec, value);
1216 : }
1217 : else
1218 : {
1219 450420 : fmt[0] = '%';
1220 450420 : fmt[1] = type;
1221 450420 : fmt[2] = '\0';
1222 450420 : vallen = snprintf(convert, sizeof(convert), fmt, value);
1223 : }
1224 1535230 : if (vallen < 0)
1225 0 : goto fail;
1226 : }
1227 :
1228 1535284 : padlen = compute_padlen(minlen, vallen + zeropadlen, leftjust);
1229 :
1230 1535284 : leading_pad(zpad, signvalue, &padlen, target);
1231 :
1232 1535284 : if (zeropadlen > 0)
1233 : {
1234 : /* If 'e' or 'E' format, inject zeroes before the exponent */
1235 0 : char *epos = strrchr(convert, 'e');
1236 :
1237 0 : if (!epos)
1238 0 : epos = strrchr(convert, 'E');
1239 0 : if (epos)
1240 : {
1241 : /* pad before exponent */
1242 0 : dostr(convert, epos - convert, target);
1243 0 : dopr_outchmulti('0', zeropadlen, target);
1244 0 : dostr(epos, vallen - (epos - convert), target);
1245 : }
1246 : else
1247 : {
1248 : /* no exponent, pad after the digits */
1249 0 : dostr(convert, vallen, target);
1250 0 : dopr_outchmulti('0', zeropadlen, target);
1251 : }
1252 : }
1253 : else
1254 : {
1255 : /* no zero padding, just emit the number as-is */
1256 1535284 : dostr(convert, vallen, target);
1257 : }
1258 :
1259 1535284 : trailing_pad(padlen, target);
1260 1535284 : return;
1261 :
1262 0 : fail:
1263 0 : target->failed = true;
1264 : }
1265 :
1266 : /*
1267 : * Nonstandard entry point to print a double value efficiently.
1268 : *
1269 : * This is approximately equivalent to strfromd(), but has an API more
1270 : * adapted to what float8out() wants. The behavior is like snprintf()
1271 : * with a format of "%.ng", where n is the specified precision.
1272 : * However, the target buffer must be nonempty (i.e. count > 0), and
1273 : * the precision is silently bounded to a sane range.
1274 : */
1275 : int
1276 230294 : pg_strfromd(char *str, size_t count, int precision, double value)
1277 : {
1278 : PrintfTarget target;
1279 230294 : int signvalue = 0;
1280 : int vallen;
1281 : char fmt[8];
1282 : char convert[64];
1283 :
1284 : /* Set up the target like pg_snprintf, but require nonempty buffer */
1285 : Assert(count > 0);
1286 230294 : target.bufstart = target.bufptr = str;
1287 230294 : target.bufend = str + count - 1;
1288 230294 : target.stream = NULL;
1289 230294 : target.nchars = 0;
1290 230294 : target.failed = false;
1291 :
1292 : /*
1293 : * We bound precision to a reasonable range; the combination of this and
1294 : * the knowledge that we're using "g" format without padding allows the
1295 : * convert[] buffer to be reasonably small.
1296 : */
1297 230294 : if (precision < 1)
1298 0 : precision = 1;
1299 230294 : else if (precision > 32)
1300 0 : precision = 32;
1301 :
1302 : /*
1303 : * The rest is just an inlined version of the fmtfloat() logic above,
1304 : * simplified using the knowledge that no padding is wanted.
1305 : */
1306 230294 : if (isnan(value))
1307 : {
1308 12138 : strcpy(convert, "NaN");
1309 12138 : vallen = 3;
1310 : }
1311 : else
1312 : {
1313 : static const double dzero = 0.0;
1314 :
1315 218156 : if (value < 0.0 ||
1316 185756 : (value == 0.0 &&
1317 26878 : memcmp(&value, &dzero, sizeof(double)) != 0))
1318 : {
1319 32466 : signvalue = '-';
1320 32466 : value = -value;
1321 : }
1322 :
1323 218156 : if (isinf(value))
1324 : {
1325 7116 : strcpy(convert, "Infinity");
1326 7116 : vallen = 8;
1327 : }
1328 : else
1329 : {
1330 211040 : fmt[0] = '%';
1331 211040 : fmt[1] = '.';
1332 211040 : fmt[2] = '*';
1333 211040 : fmt[3] = 'g';
1334 211040 : fmt[4] = '\0';
1335 211040 : vallen = snprintf(convert, sizeof(convert), fmt, precision, value);
1336 211040 : if (vallen < 0)
1337 : {
1338 0 : target.failed = true;
1339 0 : goto fail;
1340 : }
1341 : }
1342 : }
1343 :
1344 230294 : if (signvalue)
1345 32466 : dopr_outch(signvalue, &target);
1346 :
1347 230294 : dostr(convert, vallen, &target);
1348 :
1349 230294 : fail:
1350 230294 : *(target.bufptr) = '\0';
1351 460588 : return target.failed ? -1 : (target.bufptr - target.bufstart
1352 230294 : + target.nchars);
1353 : }
1354 :
1355 :
1356 : static void
1357 1099332476 : dostr(const char *str, int slen, PrintfTarget *target)
1358 : {
1359 : /* fast path for common case of slen == 1 */
1360 1099332476 : if (slen == 1)
1361 : {
1362 464951746 : dopr_outch(*str, target);
1363 464951746 : return;
1364 : }
1365 :
1366 1265621346 : while (slen > 0)
1367 : {
1368 : int avail;
1369 :
1370 632078606 : if (target->bufend != NULL)
1371 614191264 : avail = target->bufend - target->bufptr;
1372 : else
1373 17887342 : avail = slen;
1374 632078606 : if (avail <= 0)
1375 : {
1376 : /* buffer full, can we dump to stream? */
1377 838486 : if (target->stream == NULL)
1378 : {
1379 837990 : target->nchars += slen; /* no, lose the data */
1380 837990 : return;
1381 : }
1382 496 : flushbuffer(target);
1383 496 : continue;
1384 : }
1385 631240120 : avail = Min(avail, slen);
1386 631240120 : memmove(target->bufptr, str, avail);
1387 631240120 : target->bufptr += avail;
1388 631240120 : str += avail;
1389 631240120 : slen -= avail;
1390 : }
1391 : }
1392 :
1393 : static void
1394 510782288 : dopr_outch(int c, PrintfTarget *target)
1395 : {
1396 510782288 : if (target->bufend != NULL && target->bufptr >= target->bufend)
1397 : {
1398 : /* buffer full, can we dump to stream? */
1399 272630 : if (target->stream == NULL)
1400 : {
1401 272630 : target->nchars++; /* no, lose the data */
1402 272630 : return;
1403 : }
1404 0 : flushbuffer(target);
1405 : }
1406 510509668 : *(target->bufptr++) = c;
1407 : }
1408 :
1409 : static void
1410 13993724 : dopr_outchmulti(int c, int slen, PrintfTarget *target)
1411 : {
1412 : /* fast path for common case of slen == 1 */
1413 13993724 : if (slen == 1)
1414 : {
1415 10767128 : dopr_outch(c, target);
1416 10767128 : return;
1417 : }
1418 :
1419 6453244 : while (slen > 0)
1420 : {
1421 : int avail;
1422 :
1423 3226818 : if (target->bufend != NULL)
1424 3183080 : avail = target->bufend - target->bufptr;
1425 : else
1426 43738 : avail = slen;
1427 3226818 : if (avail <= 0)
1428 : {
1429 : /* buffer full, can we dump to stream? */
1430 284 : if (target->stream == NULL)
1431 : {
1432 170 : target->nchars += slen; /* no, lose the data */
1433 170 : return;
1434 : }
1435 114 : flushbuffer(target);
1436 114 : continue;
1437 : }
1438 3226534 : avail = Min(avail, slen);
1439 3226534 : memset(target->bufptr, c, avail);
1440 3226534 : target->bufptr += avail;
1441 3226534 : slen -= avail;
1442 : }
1443 : }
1444 :
1445 :
1446 : static int
1447 322169274 : adjust_sign(int is_negative, int forcesign, int *signvalue)
1448 : {
1449 322169274 : if (is_negative)
1450 : {
1451 34582914 : *signvalue = '-';
1452 34582914 : return true;
1453 : }
1454 287586360 : else if (forcesign)
1455 204 : *signvalue = '+';
1456 287586360 : return false;
1457 : }
1458 :
1459 :
1460 : static int
1461 478440088 : compute_padlen(int minlen, int vallen, int leftjust)
1462 : {
1463 : int padlen;
1464 :
1465 478440088 : padlen = minlen - vallen;
1466 478440088 : if (padlen < 0)
1467 444754380 : padlen = 0;
1468 478440088 : if (leftjust)
1469 1116370 : padlen = -padlen;
1470 478440088 : return padlen;
1471 : }
1472 :
1473 :
1474 : static void
1475 476412222 : leading_pad(int zpad, int signvalue, int *padlen, PrintfTarget *target)
1476 : {
1477 : int maxpad;
1478 :
1479 476412222 : if (*padlen > 0 && zpad)
1480 : {
1481 11096876 : if (signvalue)
1482 : {
1483 224 : dopr_outch(signvalue, target);
1484 224 : --(*padlen);
1485 224 : signvalue = 0;
1486 : }
1487 11096876 : if (*padlen > 0)
1488 : {
1489 11096858 : dopr_outchmulti(zpad, *padlen, target);
1490 11096858 : *padlen = 0;
1491 : }
1492 : }
1493 476412222 : maxpad = (signvalue != 0);
1494 476412222 : if (*padlen > maxpad)
1495 : {
1496 1560120 : dopr_outchmulti(' ', *padlen - maxpad, target);
1497 1560120 : *padlen = maxpad;
1498 : }
1499 476412222 : if (signvalue)
1500 : {
1501 34582894 : dopr_outch(signvalue, target);
1502 34582894 : if (*padlen > 0)
1503 0 : --(*padlen);
1504 34582894 : else if (*padlen < 0)
1505 0 : ++(*padlen);
1506 : }
1507 476412222 : }
1508 :
1509 :
1510 : static void
1511 478440088 : trailing_pad(int padlen, PrintfTarget *target)
1512 : {
1513 478440088 : if (padlen < 0)
1514 736040 : dopr_outchmulti(' ', -padlen, target);
1515 478440088 : }
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