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 514701512 : 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 514701512 : if (count == 0)
186 : {
187 257230 : str = onebyte;
188 257230 : count = 1;
189 : }
190 514701512 : target.bufstart = target.bufptr = str;
191 514701512 : target.bufend = str + count - 1;
192 514701512 : target.stream = NULL;
193 514701512 : target.nchars = 0;
194 514701512 : target.failed = false;
195 514701512 : dopr(&target, fmt, args);
196 514701514 : *(target.bufptr) = '\0';
197 1029403028 : return target.failed ? -1 : (target.bufptr - target.bufstart
198 514701514 : + target.nchars);
199 : }
200 :
201 : int
202 45398322 : pg_snprintf(char *str, size_t count, const char *fmt,...)
203 : {
204 : int len;
205 : va_list args;
206 :
207 45398322 : va_start(args, fmt);
208 45398322 : len = pg_vsnprintf(str, count, fmt, args);
209 45398314 : va_end(args);
210 45398314 : return len;
211 : }
212 :
213 : int
214 16775398 : pg_vsprintf(char *str, const char *fmt, va_list args)
215 : {
216 : PrintfTarget target;
217 :
218 16775398 : target.bufstart = target.bufptr = str;
219 16775398 : target.bufend = NULL;
220 16775398 : target.stream = NULL;
221 16775398 : target.nchars = 0; /* not really used in this case */
222 16775398 : target.failed = false;
223 16775398 : dopr(&target, fmt, args);
224 16775414 : *(target.bufptr) = '\0';
225 33550828 : return target.failed ? -1 : (target.bufptr - target.bufstart
226 16775414 : + target.nchars);
227 : }
228 :
229 : int
230 16775414 : pg_sprintf(char *str, const char *fmt,...)
231 : {
232 : int len;
233 : va_list args;
234 :
235 16775414 : va_start(args, fmt);
236 16775414 : len = pg_vsprintf(str, fmt, args);
237 16775422 : va_end(args);
238 16775422 : return len;
239 : }
240 :
241 : int
242 4667532 : pg_vfprintf(FILE *stream, const char *fmt, va_list args)
243 : {
244 : PrintfTarget target;
245 : char buffer[1024]; /* size is arbitrary */
246 :
247 4667532 : if (stream == NULL)
248 : {
249 0 : errno = EINVAL;
250 0 : return -1;
251 : }
252 4667532 : target.bufstart = target.bufptr = buffer;
253 4667532 : target.bufend = buffer + sizeof(buffer); /* use the whole buffer */
254 4667532 : target.stream = stream;
255 4667532 : target.nchars = 0;
256 4667532 : target.failed = false;
257 4667532 : dopr(&target, fmt, args);
258 : /* dump any remaining buffer contents */
259 4667532 : flushbuffer(&target);
260 4667532 : return target.failed ? -1 : target.nchars;
261 : }
262 :
263 : int
264 2413286 : pg_fprintf(FILE *stream, const char *fmt,...)
265 : {
266 : int len;
267 : va_list args;
268 :
269 2413286 : va_start(args, fmt);
270 2413286 : len = pg_vfprintf(stream, fmt, args);
271 2413286 : va_end(args);
272 2413286 : 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 2230832 : pg_printf(const char *fmt,...)
283 : {
284 : int len;
285 : va_list args;
286 :
287 2230832 : va_start(args, fmt);
288 2230832 : len = pg_vfprintf(stdout, fmt, args);
289 2230832 : va_end(args);
290 2230832 : 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 4668142 : flushbuffer(PrintfTarget *target)
299 : {
300 4668142 : 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 4668142 : if (!target->failed && nc > 0)
307 : {
308 : size_t written;
309 :
310 4399720 : written = fwrite(target->bufstart, 1, nc, target->stream);
311 4399720 : target->nchars += written;
312 4399720 : if (written != nc)
313 0 : target->failed = true;
314 : }
315 4668142 : target->bufptr = target->bufstart;
316 4668142 : }
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 536144446 : dopr(PrintfTarget *target, const char *format, va_list args)
374 : {
375 536144446 : int save_errno = errno;
376 536144446 : 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 536144446 : have_dollar = false;
404 :
405 1106316384 : while (*format != '\0')
406 : {
407 : /* Locate next conversion specifier */
408 722738582 : if (*format != '%')
409 : {
410 : /* Scan to next '%' or end of string */
411 521660882 : const char *next_pct = strchrnul(format + 1, '%');
412 :
413 : /* Dump literal data we just scanned over */
414 521660882 : dostr(format, next_pct - format, target);
415 521660942 : if (target->failed)
416 0 : break;
417 :
418 521660942 : if (*next_pct == '\0')
419 152566648 : break;
420 369094294 : format = next_pct;
421 : }
422 :
423 : /*
424 : * Remember start of first conversion spec; if we find %n$, then it's
425 : * sufficient for find_arguments() to start here, without rescanning
426 : * earlier literal text.
427 : */
428 570171994 : if (first_pct == NULL)
429 528119210 : first_pct = format;
430 :
431 : /* Process conversion spec starting at *format */
432 570171994 : format++;
433 :
434 : /* Fast path for conversion spec that is exactly %s */
435 570171994 : if (*format == 's')
436 : {
437 94945634 : format++;
438 94945634 : strvalue = va_arg(args, char *);
439 94945622 : if (strvalue == NULL)
440 8 : strvalue = "(null)";
441 94945622 : dostr(strvalue, strlen(strvalue), target);
442 94945624 : if (target->failed)
443 0 : break;
444 94945624 : continue;
445 : }
446 :
447 475226360 : fieldwidth = precision = zpad = leftjust = forcesign = 0;
448 475226360 : longflag = longlongflag = pointflag = 0;
449 475226360 : fmtpos = accum = 0;
450 475226360 : have_star = afterstar = false;
451 78498112 : nextch2:
452 553724472 : ch = *format++;
453 553724472 : switch (ch)
454 : {
455 1110222 : case '-':
456 1110222 : leftjust = 1;
457 1110222 : goto nextch2;
458 282 : case '+':
459 282 : forcesign = 1;
460 282 : goto nextch2;
461 30033194 : case '0':
462 : /* set zero padding if no nonzero digits yet */
463 30033194 : if (accum == 0 && !pointflag)
464 29464688 : zpad = '0';
465 : /* FALL THRU */
466 : case '1':
467 : case '2':
468 : case '3':
469 : case '4':
470 : case '5':
471 : case '6':
472 : case '7':
473 : case '8':
474 : case '9':
475 63108136 : accum = accum * 10 + (ch - '0');
476 63108136 : goto nextch2;
477 991006 : case '.':
478 991006 : if (have_star)
479 984 : have_star = false;
480 : else
481 990022 : fieldwidth = accum;
482 991006 : pointflag = 1;
483 991006 : accum = 0;
484 991006 : goto nextch2;
485 1479530 : case '*':
486 1479530 : if (have_dollar)
487 : {
488 : /*
489 : * We'll process value after reading n$. 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 1479530 : int starval = va_arg(args, int);
499 :
500 1479530 : if (pointflag)
501 : {
502 61164 : precision = starval;
503 61164 : if (precision < 0)
504 : {
505 0 : precision = 0;
506 0 : pointflag = 0;
507 : }
508 : }
509 : else
510 : {
511 1418366 : fieldwidth = starval;
512 1418366 : if (fieldwidth < 0)
513 : {
514 5646 : leftjust = 1;
515 5646 : fieldwidth = -fieldwidth;
516 : }
517 : }
518 : }
519 1479530 : have_star = true;
520 1479530 : accum = 0;
521 1479530 : 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 42 : 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 8860588 : case 'l':
561 8860588 : if (longflag)
562 8836 : longlongflag = 1;
563 : else
564 8851752 : longflag = 1;
565 8860588 : 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 2948302 : case 'z':
576 : #if SIZEOF_SIZE_T == SIZEOF_LONG
577 2948302 : 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 2948302 : goto nextch2;
584 88 : case 'h':
585 : case '\'':
586 : /* ignore these */
587 88 : goto nextch2;
588 317930192 : case 'd':
589 : case 'i':
590 317930192 : if (!have_star)
591 : {
592 317889070 : if (pointflag)
593 0 : precision = accum;
594 : else
595 317889070 : fieldwidth = accum;
596 : }
597 317930192 : 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 317930192 : if (longlongflag)
609 8800 : numvalue = va_arg(args, long long);
610 317921392 : else if (longflag)
611 7064338 : numvalue = va_arg(args, long);
612 : else
613 310857054 : numvalue = va_arg(args, int);
614 : }
615 317930188 : fmtint(numvalue, ch, forcesign, leftjust, fieldwidth, zpad,
616 : precision, pointflag, target);
617 317930226 : break;
618 153484856 : case 'o':
619 : case 'u':
620 : case 'x':
621 : case 'X':
622 153484856 : if (!have_star)
623 : {
624 153484856 : if (pointflag)
625 0 : precision = accum;
626 : else
627 153484856 : fieldwidth = accum;
628 : }
629 153484856 : 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 153484856 : if (longlongflag)
641 36 : numvalue = (unsigned long long) va_arg(args, long long);
642 153484820 : else if (longflag)
643 4726880 : numvalue = (unsigned long) va_arg(args, long);
644 : else
645 148757940 : numvalue = (unsigned int) va_arg(args, int);
646 : }
647 153484856 : fmtint(numvalue, ch, forcesign, leftjust, fieldwidth, zpad,
648 : precision, pointflag, target);
649 153484856 : break;
650 40576 : case 'c':
651 40576 : if (!have_star)
652 : {
653 40534 : if (pointflag)
654 0 : precision = accum;
655 : else
656 40534 : fieldwidth = accum;
657 : }
658 40576 : if (have_dollar)
659 0 : cvalue = (unsigned char) argvalues[fmtpos].i;
660 : else
661 40576 : cvalue = (unsigned char) va_arg(args, int);
662 40576 : fmtchar(cvalue, leftjust, fieldwidth, target);
663 40576 : break;
664 1986356 : case 's':
665 1986356 : if (!have_star)
666 : {
667 589386 : if (pointflag)
668 0 : precision = accum;
669 : else
670 589386 : fieldwidth = accum;
671 : }
672 1986356 : if (have_dollar)
673 0 : strvalue = argvalues[fmtpos].cptr;
674 : else
675 1986356 : strvalue = va_arg(args, char *);
676 : /* If string is NULL, silently substitute "(null)" */
677 1986356 : if (strvalue == NULL)
678 0 : strvalue = "(null)";
679 1986356 : fmtstr(strvalue, leftjust, fieldwidth, precision, pointflag,
680 : target);
681 1986356 : break;
682 404 : case 'p':
683 : /* fieldwidth/leftjust are ignored ... */
684 404 : if (have_dollar)
685 0 : strvalue = argvalues[fmtpos].cptr;
686 : else
687 404 : strvalue = va_arg(args, char *);
688 404 : fmtptr((const void *) strvalue, target);
689 404 : break;
690 1425270 : case 'e':
691 : case 'E':
692 : case 'f':
693 : case 'g':
694 : case 'G':
695 1425270 : if (!have_star)
696 : {
697 1384864 : if (pointflag)
698 929842 : precision = accum;
699 : else
700 455022 : fieldwidth = accum;
701 : }
702 1425270 : if (have_dollar)
703 0 : fvalue = argvalues[fmtpos].d;
704 : else
705 1425270 : fvalue = va_arg(args, double);
706 1425270 : fmtfloat(fvalue, ch, forcesign, leftjust,
707 : fieldwidth, zpad,
708 : precision, pointflag,
709 : target);
710 1425270 : break;
711 482 : case 'm':
712 : {
713 : char errbuf[PG_STRERROR_R_BUFLEN];
714 482 : const char *errm = strerror_r(save_errno,
715 : errbuf, sizeof(errbuf));
716 :
717 482 : dostr(errm, strlen(errm), target);
718 : }
719 472 : break;
720 358182 : case '%':
721 358182 : dopr_outch('%', target);
722 358182 : 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 475226314 : if (target->failed)
734 0 : break;
735 : }
736 :
737 536144450 : return;
738 :
739 42 : bad_format:
740 42 : errno = EINVAL;
741 42 : 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 1986356 : 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 1986356 : if (pointflag)
985 20758 : vallen = strnlen(value, maxwidth);
986 : else
987 1965598 : vallen = strlen(value);
988 :
989 1986356 : padlen = compute_padlen(minlen, vallen, leftjust);
990 :
991 1986356 : if (padlen > 0)
992 : {
993 600300 : dopr_outchmulti(' ', padlen, target);
994 600300 : padlen = 0;
995 : }
996 :
997 1986356 : dostr(value, vallen, target);
998 :
999 1986356 : trailing_pad(padlen, target);
1000 1986356 : }
1001 :
1002 : static void
1003 404 : 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 404 : vallen = snprintf(convert, sizeof(convert), "%p", value);
1010 404 : if (vallen < 0)
1011 0 : target->failed = true;
1012 : else
1013 404 : dostr(convert, vallen, target);
1014 404 : }
1015 :
1016 : static void
1017 471415038 : 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 471415038 : const char *cvt = "0123456789abcdef";
1025 471415038 : int signvalue = 0;
1026 : char convert[64];
1027 471415038 : int vallen = 0;
1028 : int padlen; /* amount to pad */
1029 : int zeropad; /* extra leading zeroes */
1030 :
1031 471415038 : switch (type)
1032 : {
1033 317930194 : case 'd':
1034 : case 'i':
1035 317930194 : base = 10;
1036 317930194 : dosign = 1;
1037 317930194 : break;
1038 11272 : case 'o':
1039 11272 : base = 8;
1040 11272 : dosign = 0;
1041 11272 : break;
1042 135009878 : case 'u':
1043 135009878 : base = 10;
1044 135009878 : dosign = 0;
1045 135009878 : break;
1046 69726 : case 'x':
1047 69726 : base = 16;
1048 69726 : dosign = 0;
1049 69726 : break;
1050 18393980 : case 'X':
1051 18393980 : cvt = "0123456789ABCDEF";
1052 18393980 : base = 16;
1053 18393980 : dosign = 0;
1054 18393980 : 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 471415050 : if (dosign && adjust_sign((value < 0), forcesign, &signvalue))
1066 34311786 : uvalue = -(unsigned long long) value;
1067 : else
1068 437103252 : 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 471415038 : 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 471415038 : if (base == 10)
1088 : {
1089 : do
1090 : {
1091 777267634 : convert[sizeof(convert) - (++vallen)] = cvt[uvalue % 10];
1092 777267634 : uvalue = uvalue / 10;
1093 777267634 : } while (uvalue);
1094 : }
1095 18474978 : else if (base == 16)
1096 : {
1097 : do
1098 : {
1099 69373290 : convert[sizeof(convert) - (++vallen)] = cvt[uvalue % 16];
1100 69373290 : uvalue = uvalue / 16;
1101 69373290 : } while (uvalue);
1102 : }
1103 : else /* base == 8 */
1104 : {
1105 : do
1106 : {
1107 33816 : convert[sizeof(convert) - (++vallen)] = cvt[uvalue % 8];
1108 33816 : uvalue = uvalue / 8;
1109 33816 : } while (uvalue);
1110 : }
1111 : }
1112 :
1113 471415038 : zeropad = Max(0, precision - vallen);
1114 :
1115 471415038 : padlen = compute_padlen(minlen, vallen + zeropad, leftjust);
1116 :
1117 471415066 : leading_pad(zpad, signvalue, &padlen, target);
1118 :
1119 471415050 : if (zeropad > 0)
1120 0 : dopr_outchmulti('0', zeropad, target);
1121 :
1122 471415050 : dostr(convert + sizeof(convert) - vallen, vallen, target);
1123 :
1124 471415086 : trailing_pad(padlen, target);
1125 : }
1126 :
1127 : static void
1128 40576 : fmtchar(int value, int leftjust, int minlen, PrintfTarget *target)
1129 : {
1130 : int padlen; /* amount to pad */
1131 :
1132 40576 : padlen = compute_padlen(minlen, 1, leftjust);
1133 :
1134 40576 : if (padlen > 0)
1135 : {
1136 42 : dopr_outchmulti(' ', padlen, target);
1137 42 : padlen = 0;
1138 : }
1139 :
1140 40576 : dopr_outch(value, target);
1141 :
1142 40576 : trailing_pad(padlen, target);
1143 40576 : }
1144 :
1145 : static void
1146 1425270 : fmtfloat(double value, char type, int forcesign, int leftjust,
1147 : int minlen, int zpad, int precision, int pointflag,
1148 : PrintfTarget *target)
1149 : {
1150 1425270 : int signvalue = 0;
1151 : int prec;
1152 : int vallen;
1153 : char fmt[8];
1154 : char convert[1024];
1155 1425270 : 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 1425270 : if (precision < 0) /* cover possible overflow of "accum" */
1176 0 : precision = 0;
1177 1425270 : prec = Min(precision, 350);
1178 :
1179 1425270 : 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 2836056 : if (adjust_sign((value < 0.0 ||
1196 1410840 : (value == 0.0 &&
1197 440218 : memcmp(&value, &dzero, sizeof(double)) != 0)),
1198 : forcesign, &signvalue))
1199 14376 : value = -value;
1200 :
1201 1425216 : if (isinf(value))
1202 : {
1203 114 : strcpy(convert, "Infinity");
1204 114 : vallen = 8;
1205 : /* no zero padding, regardless of precision spec */
1206 : }
1207 1425102 : else if (pointflag)
1208 : {
1209 970104 : zeropadlen = precision - prec;
1210 970104 : fmt[0] = '%';
1211 970104 : fmt[1] = '.';
1212 970104 : fmt[2] = '*';
1213 970104 : fmt[3] = type;
1214 970104 : fmt[4] = '\0';
1215 970104 : vallen = snprintf(convert, sizeof(convert), fmt, prec, value);
1216 : }
1217 : else
1218 : {
1219 454998 : fmt[0] = '%';
1220 454998 : fmt[1] = type;
1221 454998 : fmt[2] = '\0';
1222 454998 : vallen = snprintf(convert, sizeof(convert), fmt, value);
1223 : }
1224 1425216 : if (vallen < 0)
1225 0 : goto fail;
1226 : }
1227 :
1228 1425270 : padlen = compute_padlen(minlen, vallen + zeropadlen, leftjust);
1229 :
1230 1425270 : leading_pad(zpad, signvalue, &padlen, target);
1231 :
1232 1425270 : 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 1425270 : dostr(convert, vallen, target);
1257 : }
1258 :
1259 1425270 : trailing_pad(padlen, target);
1260 1425270 : 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 1091664346 : dostr(const char *str, int slen, PrintfTarget *target)
1358 : {
1359 : /* fast path for common case of slen == 1 */
1360 1091664346 : if (slen == 1)
1361 : {
1362 460524208 : dopr_outch(*str, target);
1363 460524216 : return;
1364 : }
1365 :
1366 1259151746 : while (slen > 0)
1367 : {
1368 : int avail;
1369 :
1370 628850206 : if (target->bufend != NULL)
1371 610018546 : avail = target->bufend - target->bufptr;
1372 : else
1373 18831660 : avail = slen;
1374 628850206 : if (avail <= 0)
1375 : {
1376 : /* buffer full, can we dump to stream? */
1377 839094 : if (target->stream == NULL)
1378 : {
1379 838598 : target->nchars += slen; /* no, lose the data */
1380 838598 : return;
1381 : }
1382 496 : flushbuffer(target);
1383 496 : continue;
1384 : }
1385 628011112 : avail = Min(avail, slen);
1386 628011112 : memmove(target->bufptr, str, avail);
1387 628011112 : target->bufptr += avail;
1388 628011112 : str += avail;
1389 628011112 : slen -= avail;
1390 : }
1391 : }
1392 :
1393 : static void
1394 504176484 : dopr_outch(int c, PrintfTarget *target)
1395 : {
1396 504176484 : if (target->bufend != NULL && target->bufptr >= target->bufend)
1397 : {
1398 : /* buffer full, can we dump to stream? */
1399 272802 : if (target->stream == NULL)
1400 : {
1401 272802 : target->nchars++; /* no, lose the data */
1402 272802 : return;
1403 : }
1404 0 : flushbuffer(target);
1405 : }
1406 503903698 : *(target->bufptr++) = c;
1407 : }
1408 :
1409 : static void
1410 12265122 : dopr_outchmulti(int c, int slen, PrintfTarget *target)
1411 : {
1412 : /* fast path for common case of slen == 1 */
1413 12265122 : if (slen == 1)
1414 : {
1415 8894712 : dopr_outch(c, target);
1416 8894712 : return;
1417 : }
1418 :
1419 6740872 : while (slen > 0)
1420 : {
1421 : int avail;
1422 :
1423 3370632 : if (target->bufend != NULL)
1424 3328774 : avail = target->bufend - target->bufptr;
1425 : else
1426 41858 : avail = slen;
1427 3370632 : 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 3370348 : avail = Min(avail, slen);
1439 3370348 : memset(target->bufptr, c, avail);
1440 3370348 : target->bufptr += avail;
1441 3370348 : slen -= avail;
1442 : }
1443 : }
1444 :
1445 :
1446 : static int
1447 319355400 : adjust_sign(int is_negative, int forcesign, int *signvalue)
1448 : {
1449 319355400 : if (is_negative)
1450 : {
1451 34326162 : *signvalue = '-';
1452 34326162 : return true;
1453 : }
1454 285029238 : else if (forcesign)
1455 204 : *signvalue = '+';
1456 285029238 : return false;
1457 : }
1458 :
1459 :
1460 : static int
1461 474867264 : compute_padlen(int minlen, int vallen, int leftjust)
1462 : {
1463 : int padlen;
1464 :
1465 474867264 : padlen = minlen - vallen;
1466 474867264 : if (padlen < 0)
1467 441878164 : padlen = 0;
1468 474867264 : if (leftjust)
1469 1115868 : padlen = -padlen;
1470 474867264 : return padlen;
1471 : }
1472 :
1473 :
1474 : static void
1475 472840334 : leading_pad(int zpad, int signvalue, int *padlen, PrintfTarget *target)
1476 : {
1477 : int maxpad;
1478 :
1479 472840334 : if (*padlen > 0 && zpad)
1480 : {
1481 9368594 : if (signvalue)
1482 : {
1483 224 : dopr_outch(signvalue, target);
1484 224 : --(*padlen);
1485 224 : signvalue = 0;
1486 : }
1487 9368594 : if (*padlen > 0)
1488 : {
1489 9368576 : dopr_outchmulti(zpad, *padlen, target);
1490 9368576 : *padlen = 0;
1491 : }
1492 : }
1493 472840334 : maxpad = (signvalue != 0);
1494 472840334 : if (*padlen > maxpad)
1495 : {
1496 1559970 : dopr_outchmulti(' ', *padlen - maxpad, target);
1497 1559970 : *padlen = maxpad;
1498 : }
1499 472840334 : if (signvalue)
1500 : {
1501 34326142 : dopr_outch(signvalue, target);
1502 34326142 : if (*padlen > 0)
1503 0 : --(*padlen);
1504 34326142 : else if (*padlen < 0)
1505 0 : ++(*padlen);
1506 : }
1507 472840334 : }
1508 :
1509 :
1510 : static void
1511 474867270 : trailing_pad(int padlen, PrintfTarget *target)
1512 : {
1513 474867270 : if (padlen < 0)
1514 736234 : dopr_outchmulti(' ', -padlen, target);
1515 474867270 : }
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