source: mainline/kernel/generic/src/printf/printf_core.c@ e560ae8

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since e560ae8 was e560ae8, checked in by Martin Decky <martin@…>, 16 years ago

fix wrong assignment
  • Property mode set to 100644
File size: 21.7 KB
Line 
1/*
2 * Copyright (c) 2001-2004 Jakub Jermar
3 * Copyright (c) 2006 Josef Cejka
4 * Copyright (c) 2009 Martin Decky
5 * All rights reserved.
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 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * - The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/** @addtogroup generic
32 * @{
33 */
34/**
35 * @file
36 * @brief Printing functions.
37 */
38
39#include <printf/printf_core.h>
40#include <print.h>
41#include <arch/arg.h>
42#include <macros.h>
43#include <string.h>
44#include <arch.h>
45
46/** show prefixes 0x or 0 */
47#define __PRINTF_FLAG_PREFIX 0x00000001
48/** signed / unsigned number */
49#define __PRINTF_FLAG_SIGNED 0x00000002
50/** print leading zeroes */
51#define __PRINTF_FLAG_ZEROPADDED 0x00000004
52/** align to left */
53#define __PRINTF_FLAG_LEFTALIGNED 0x00000010
54/** always show + sign */
55#define __PRINTF_FLAG_SHOWPLUS 0x00000020
56/** print space instead of plus */
57#define __PRINTF_FLAG_SPACESIGN 0x00000040
58/** show big characters */
59#define __PRINTF_FLAG_BIGCHARS 0x00000080
60/** number has - sign */
61#define __PRINTF_FLAG_NEGATIVE 0x00000100
62
63/**
64 * Buffer big enough for 64-bit number printed in base 2, sign, prefix and 0
65 * to terminate string... (last one is only for better testing end of buffer by
66 * zero-filling subroutine)
67 */
68#define PRINT_NUMBER_BUFFER_SIZE (64 + 5)
69
70/** Enumeration of possible arguments types.
71 */
72typedef enum {
73 PrintfQualifierByte = 0,
74 PrintfQualifierShort,
75 PrintfQualifierInt,
76 PrintfQualifierLong,
77 PrintfQualifierLongLong,
78 PrintfQualifierPointer
79} qualifier_t;
80
81static char nullstr[] = "(NULL)";
82static char digits_small[] = "0123456789abcdef";
83static char digits_big[] = "0123456789ABCDEF";
84
85/** Print one or more UTF-8 characters without adding newline.
86 *
87 * @param buf Buffer holding UTF-8 characters with size of
88 * at least size bytes. NULL is not allowed!
89 * @param size Size of the buffer in bytes.
90 * @param ps Output method and its data.
91 *
92 * @return Number of UTF-8 characters printed.
93 *
94 */
95static int printf_putnchars_utf8(const char *buf, size_t size,
96 printf_spec_t *ps)
97{
98 return ps->write_utf8((void *) buf, size, ps->data);
99}
100
101/** Print one or more UTF-32 characters without adding newline.
102 *
103 * @param buf Buffer holding UTF-32 characters with size of
104 * at least size bytes. NULL is not allowed!
105 * @param size Size of the buffer in bytes.
106 * @param ps Output method and its data.
107 *
108 * @return Number of UTF-32 characters printed.
109 *
110 */
111static int printf_putnchars_utf32(const wchar_t *buf, size_t size,
112 printf_spec_t *ps)
113{
114 return ps->write_utf32((void *) buf, size, ps->data);
115}
116
117/** Print UTF-8 string without adding a newline.
118 *
119 * @param str UTF-8 string to print.
120 * @param ps Write function specification and support data.
121 *
122 * @return Number of UTF-8 characters printed.
123 *
124 */
125static int printf_putstr(const char *str, printf_spec_t *ps)
126{
127 if (str == NULL)
128 return printf_putnchars_utf8(nullstr, strlen(nullstr), ps);
129
130 return ps->write_utf8((void *) str, strlen(str), ps->data);
131}
132
133/** Print one ASCII character.
134 *
135 * @param c ASCII character to be printed.
136 * @param ps Output method.
137 *
138 * @return Number of characters printed.
139 *
140 */
141static int printf_putchar(const char ch, printf_spec_t *ps)
142{
143 if (!ascii_check(ch))
144 return ps->write_utf8((void *) &invalch, 1, ps->data);
145
146 return ps->write_utf8(&ch, 1, ps->data);
147}
148
149/** Print one UTF-32 character.
150 *
151 * @param c UTF-32 character to be printed.
152 * @param ps Output method.
153 *
154 * @return Number of characters printed.
155 *
156 */
157static int printf_putwchar(const wchar_t ch, printf_spec_t *ps)
158{
159 if (!unicode_check(ch))
160 return ps->write_utf8((void *) &invalch, 1, ps->data);
161
162 return ps->write_utf32(&ch, 1, ps->data);
163}
164
165/** Print one formatted ASCII character.
166 *
167 * @param ch Character to print.
168 * @param width Width modifier.
169 * @param flags Flags that change the way the character is printed.
170 *
171 * @return Number of characters printed, negative value on failure.
172 *
173 */
174static int print_char(const char ch, int width, uint32_t flags, printf_spec_t *ps)
175{
176 count_t counter = 0;
177 if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
178 while (--width > 0) {
179 /*
180 * One space is consumed by the character itself, hence
181 * the predecrement.
182 */
183 if (printf_putchar(' ', ps) > 0)
184 counter++;
185 }
186 }
187
188 if (printf_putchar(ch, ps) > 0)
189 counter++;
190
191 while (--width > 0) {
192 /*
193 * One space is consumed by the character itself, hence
194 * the predecrement.
195 */
196 if (printf_putchar(' ', ps) > 0)
197 counter++;
198 }
199
200 return (int) (counter + 1);
201}
202
203/** Print one formatted UTF-32 character.
204 *
205 * @param ch Character to print.
206 * @param width Width modifier.
207 * @param flags Flags that change the way the character is printed.
208 *
209 * @return Number of characters printed, negative value on failure.
210 *
211 */
212static int print_wchar(const wchar_t ch, int width, uint32_t flags, printf_spec_t *ps)
213{
214 count_t counter = 0;
215 if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
216 while (--width > 0) {
217 /*
218 * One space is consumed by the character itself, hence
219 * the predecrement.
220 */
221 if (printf_putchar(' ', ps) > 0)
222 counter++;
223 }
224 }
225
226 if (printf_putwchar(ch, ps) > 0)
227 counter++;
228
229 while (--width > 0) {
230 /*
231 * One space is consumed by the character itself, hence
232 * the predecrement.
233 */
234 if (printf_putchar(' ', ps) > 0)
235 counter++;
236 }
237
238 return (int) (counter + 1);
239}
240
241/** Print UTF-8 string.
242 *
243 * @param str UTF-8 string to be printed.
244 * @param width Width modifier.
245 * @param precision Precision modifier.
246 * @param flags Flags that modify the way the string is printed.
247 *
248 * @return Number of UTF-8 characters printed, negative value on failure.
249 */
250static int print_utf8(char *str, int width, unsigned int precision,
251 uint32_t flags, printf_spec_t *ps)
252{
253 if (str == NULL)
254 return printf_putstr(nullstr, ps);
255
256 /* Print leading spaces */
257 size_t size = strlen_utf8(str);
258 if (precision == 0)
259 precision = size;
260
261 count_t counter = 0;
262 width -= precision;
263 if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
264 while (width-- > 0) {
265 if (printf_putchar(' ', ps) == 1)
266 counter++;
267 }
268 }
269
270 int retval;
271 size_t bytes = utf8_count_bytes(str, min(size, precision));
272 if ((retval = printf_putnchars_utf8(str, bytes, ps)) < 0)
273 return -counter;
274
275 counter += retval;
276
277 while (width-- > 0) {
278 if (printf_putchar(' ', ps) == 1)
279 counter++;
280 }
281
282 return ((int) counter);
283}
284
285/** Print UTF-32 string.
286 *
287 * @param str UTF-32 string to be printed.
288 * @param width Width modifier.
289 * @param precision Precision modifier.
290 * @param flags Flags that modify the way the string is printed.
291 *
292 * @return Number of UTF-32 characters printed, negative value on failure.
293 */
294static int print_utf32(wchar_t *str, int width, unsigned int precision,
295 uint32_t flags, printf_spec_t *ps)
296{
297 if (str == NULL)
298 return printf_putstr(nullstr, ps);
299
300 /* Print leading spaces */
301 size_t size = strlen_utf32(str);
302 if (precision == 0)
303 precision = size;
304
305 count_t counter = 0;
306 width -= precision;
307 if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
308 while (width-- > 0) {
309 if (printf_putchar(' ', ps) == 1)
310 counter++;
311 }
312 }
313
314 int retval;
315 size_t bytes = min(size, precision) * sizeof(wchar_t);
316 if ((retval = printf_putnchars_utf32(str, bytes, ps)) < 0)
317 return -counter;
318
319 counter += retval;
320
321 while (width-- > 0) {
322 if (printf_putchar(' ', ps) == 1)
323 counter++;
324 }
325
326 return ((int) counter);
327}
328
329/** Print a number in a given base.
330 *
331 * Print significant digits of a number in given base.
332 *
333 * @param num Number to print.
334 * @param width Width modifier.
335 * @param precision Precision modifier.
336 * @param base Base to print the number in (must be between 2 and 16).
337 * @param flags Flags that modify the way the number is printed.
338 *
339 * @return Number of characters printed.
340 *
341 */
342static int print_number(uint64_t num, int width, int precision, int base,
343 uint32_t flags, printf_spec_t *ps)
344{
345 char *digits;
346 if (flags & __PRINTF_FLAG_BIGCHARS)
347 digits = digits_big;
348 else
349 digits = digits_small;
350
351 char data[PRINT_NUMBER_BUFFER_SIZE];
352 char *ptr = &data[PRINT_NUMBER_BUFFER_SIZE - 1];
353
354 /* Size of number with all prefixes and signs */
355 int size = 0;
356
357 /* Put zero at end of string */
358 *ptr-- = 0;
359
360 if (num == 0) {
361 *ptr-- = '0';
362 size++;
363 } else {
364 do {
365 *ptr-- = digits[num % base];
366 size++;
367 } while (num /= base);
368 }
369
370 /* Size of plain number */
371 int number_size = size;
372
373 /*
374 * Collect the sum of all prefixes/signs/etc. to calculate padding and
375 * leading zeroes.
376 */
377 if (flags & __PRINTF_FLAG_PREFIX) {
378 switch(base) {
379 case 2:
380 /* Binary formating is not standard, but usefull */
381 size += 2;
382 break;
383 case 8:
384 size++;
385 break;
386 case 16:
387 size += 2;
388 break;
389 }
390 }
391
392 char sgn = 0;
393 if (flags & __PRINTF_FLAG_SIGNED) {
394 if (flags & __PRINTF_FLAG_NEGATIVE) {
395 sgn = '-';
396 size++;
397 } else if (flags & __PRINTF_FLAG_SHOWPLUS) {
398 sgn = '+';
399 size++;
400 } else if (flags & __PRINTF_FLAG_SPACESIGN) {
401 sgn = ' ';
402 size++;
403 }
404 }
405
406 if (flags & __PRINTF_FLAG_LEFTALIGNED)
407 flags &= ~__PRINTF_FLAG_ZEROPADDED;
408
409 /*
410 * If the number is left-aligned or precision is specified then
411 * padding with zeros is ignored.
412 */
413 if (flags & __PRINTF_FLAG_ZEROPADDED) {
414 if ((precision == 0) && (width > size))
415 precision = width - size + number_size;
416 }
417
418 /* Print leading spaces */
419 if (number_size > precision) {
420 /* Print the whole number, not only a part */
421 precision = number_size;
422 }
423
424 width -= precision + size - number_size;
425 count_t counter = 0;
426
427 if (!(flags & __PRINTF_FLAG_LEFTALIGNED)) {
428 while (width-- > 0) {
429 if (printf_putchar(' ', ps) == 1)
430 counter++;
431 }
432 }
433
434 /* Print sign */
435 if (sgn) {
436 if (printf_putchar(sgn, ps) == 1)
437 counter++;
438 }
439
440 /* Print prefix */
441 if (flags & __PRINTF_FLAG_PREFIX) {
442 switch(base) {
443 case 2:
444 /* Binary formating is not standard, but usefull */
445 if (printf_putchar('0', ps) == 1)
446 counter++;
447 if (flags & __PRINTF_FLAG_BIGCHARS) {
448 if (printf_putchar('B', ps) == 1)
449 counter++;
450 } else {
451 if (printf_putchar('b', ps) == 1)
452 counter++;
453 }
454 break;
455 case 8:
456 if (printf_putchar('o', ps) == 1)
457 counter++;
458 break;
459 case 16:
460 if (printf_putchar('0', ps) == 1)
461 counter++;
462 if (flags & __PRINTF_FLAG_BIGCHARS) {
463 if (printf_putchar('X', ps) == 1)
464 counter++;
465 } else {
466 if (printf_putchar('x', ps) == 1)
467 counter++;
468 }
469 break;
470 }
471 }
472
473 /* Print leading zeroes */
474 precision -= number_size;
475 while (precision-- > 0) {
476 if (printf_putchar('0', ps) == 1)
477 counter++;
478 }
479
480 /* Print the number itself */
481 int retval;
482 if ((retval = printf_putstr(++ptr, ps)) > 0)
483 counter += retval;
484
485 /* Print tailing spaces */
486
487 while (width-- > 0) {
488 if (printf_putchar(' ', ps) == 1)
489 counter++;
490 }
491
492 return ((int) counter);
493}
494
495/** Print formatted string.
496 *
497 * Print string formatted according to the fmt parameter and variadic arguments.
498 * Each formatting directive must have the following form:
499 *
500 * \% [ FLAGS ] [ WIDTH ] [ .PRECISION ] [ TYPE ] CONVERSION
501 *
502 * FLAGS:@n
503 * - "#" Force to print prefix. For \%o conversion, the prefix is 0, for
504 * \%x and \%X prefixes are 0x and 0X and for conversion \%b the
505 * prefix is 0b.
506 *
507 * - "-" Align to left.
508 *
509 * - "+" Print positive sign just as negative.
510 *
511 * - " " If the printed number is positive and "+" flag is not set,
512 * print space in place of sign.
513 *
514 * - "0" Print 0 as padding instead of spaces. Zeroes are placed between
515 * sign and the rest of the number. This flag is ignored if "-"
516 * flag is specified.
517 *
518 * WIDTH:@n
519 * - Specify the minimal width of a printed argument. If it is bigger,
520 * width is ignored. If width is specified with a "*" character instead of
521 * number, width is taken from parameter list. And integer parameter is
522 * expected before parameter for processed conversion specification. If
523 * this value is negative its absolute value is taken and the "-" flag is
524 * set.
525 *
526 * PRECISION:@n
527 * - Value precision. For numbers it specifies minimum valid numbers.
528 * Smaller numbers are printed with leading zeroes. Bigger numbers are not
529 * affected. Strings with more than precision characters are cut off. Just
530 * as with width, an "*" can be used used instead of a number. An integer
531 * value is then expected in parameters. When both width and precision are
532 * specified using "*", the first parameter is used for width and the
533 * second one for precision.
534 *
535 * TYPE:@n
536 * - "hh" Signed or unsigned char.@n
537 * - "h" Signed or unsigned short.@n
538 * - "" Signed or unsigned int (default value).@n
539 * - "l" Signed or unsigned long int.@n
540 * If conversion is "c", the character is wchar_t (UTF-32).@n
541 * If conversion is "s", the string is wchar_t * (UTF-32).@n
542 * - "ll" Signed or unsigned long long int.@n
543 *
544 * CONVERSION:@n
545 * - % Print percentile character itself.
546 *
547 * - c Print single character. The character is expected to be plain
548 * ASCII (e.g. only values 0 .. 127 are valid).@n
549 * If type is "l", then the character is expected to be UTF-32
550 * (e.g. values 0 .. 0x10ffff are valid).
551 *
552 * - s Print zero terminated string. If a NULL value is passed as
553 * value, "(NULL)" is printed instead.@n
554 * The string is expected to be correctly encoded UTF-8 (or plain
555 * ASCII, which is a subset of UTF-8).@n
556 * If type is "l", then the string is expected to be correctly
557 * encoded UTF-32.
558 *
559 * - P, p Print value of a pointer. Void * value is expected and it is
560 * printed in hexadecimal notation with prefix (as with \%#X / \%#x
561 * for 32-bit or \%#X / \%#x for 64-bit long pointers).
562 *
563 * - b Print value as unsigned binary number. Prefix is not printed by
564 * default. (Nonstandard extension.)
565 *
566 * - o Print value as unsigned octal number. Prefix is not printed by
567 * default.
568 *
569 * - d, i Print signed decimal number. There is no difference between d
570 * and i conversion.
571 *
572 * - u Print unsigned decimal number.
573 *
574 * - X, x Print hexadecimal number with upper- or lower-case. Prefix is
575 * not printed by default.
576 *
577 * All other characters from fmt except the formatting directives are printed in
578 * verbatim.
579 *
580 * @param fmt Formatting NULL terminated string (UTF-8 or plain ASCII).
581 *
582 * @return Number of UTF-8 characters printed, negative value on failure.
583 *
584 */
585int printf_core(const char *fmt, printf_spec_t *ps, va_list ap)
586{
587 index_t i = 0; /* Index of the currently processed character from fmt */
588 index_t j = 0; /* Index to the first not printed nonformating character */
589
590 wchar_t uc; /* Current UTF-32 character decoded from fmt */
591 count_t counter = 0; /* Number of UTF-8 characters printed */
592 int retval; /* Return values from nested functions */
593
594 while ((uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT)) != 0) {
595 /* Control character */
596 if (uc == '%') {
597 /* Print common characters if any processed */
598 if (i > j) {
599 if ((retval = printf_putnchars_utf8(&fmt[j], i - j, ps)) < 0) {
600 /* Error */
601 counter = -counter;
602 goto out;
603 }
604 counter += retval;
605 }
606
607 j = i;
608
609 /* Parse modifiers */
610 uint32_t flags = 0;
611 bool end = false;
612
613 do {
614 i++;
615 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
616 switch (uc) {
617 case '#':
618 flags |= __PRINTF_FLAG_PREFIX;
619 break;
620 case '-':
621 flags |= __PRINTF_FLAG_LEFTALIGNED;
622 break;
623 case '+':
624 flags |= __PRINTF_FLAG_SHOWPLUS;
625 break;
626 case ' ':
627 flags |= __PRINTF_FLAG_SPACESIGN;
628 break;
629 case '0':
630 flags |= __PRINTF_FLAG_ZEROPADDED;
631 break;
632 default:
633 end = true;
634 };
635 } while (!end);
636
637 /* Width & '*' operator */
638 int width = 0;
639 if (isdigit(uc)) {
640 while ((uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT)) != 0) {
641 if (!isdigit(uc))
642 break;
643
644 width *= 10;
645 width += uc - '0';
646 i++;
647 }
648 } else if (uc == '*') {
649 /* Get width value from argument list */
650 i++;
651 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
652 width = (int) va_arg(ap, int);
653 if (width < 0) {
654 /* Negative width sets '-' flag */
655 width *= -1;
656 flags |= __PRINTF_FLAG_LEFTALIGNED;
657 }
658 }
659
660 /* Precision and '*' operator */
661 int precision = 0;
662 if (uc == '.') {
663 i++;
664 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
665 if (isdigit(uc)) {
666 while ((uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT)) != 0) {
667 if (!isdigit(uc))
668 break;
669
670 precision *= 10;
671 precision += uc - '0';
672 i++;
673 }
674 } else if (fmt[i] == '*') {
675 /* Get precision value from the argument list */
676 i++;
677 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
678 precision = (int) va_arg(ap, int);
679 if (precision < 0) {
680 /* Ignore negative precision */
681 precision = 0;
682 }
683 }
684 }
685
686 qualifier_t qualifier;
687
688 switch (uc) {
689 /** @todo Unimplemented qualifiers:
690 * t ptrdiff_t - ISO C 99
691 */
692 case 'h':
693 /* Char or short */
694 qualifier = PrintfQualifierShort;
695 i++;
696 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
697 if (uc == 'h') {
698 i++;
699 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
700 qualifier = PrintfQualifierByte;
701 }
702 break;
703 case 'l':
704 /* Long or long long */
705 qualifier = PrintfQualifierLong;
706 i++;
707 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
708 if (uc == 'l') {
709 i++;
710 uc = utf8_decode(fmt, &i, UTF8_NO_LIMIT);
711 qualifier = PrintfQualifierLongLong;
712 }
713 break;
714 default:
715 /* Default type */
716 qualifier = PrintfQualifierInt;
717 }
718
719 unsigned int base = 10;
720
721 switch (uc) {
722 /*
723 * String and character conversions.
724 */
725 case 's':
726 if (qualifier == PrintfQualifierLong)
727 retval = print_utf32(va_arg(ap, wchar_t *), width, precision, flags, ps);
728 else
729 retval = print_utf8(va_arg(ap, char *), width, precision, flags, ps);
730
731 if (retval < 0) {
732 counter = -counter;
733 goto out;
734 }
735
736 counter += retval;
737 j = i + 1;
738 goto next_char;
739 case 'c':
740 if (qualifier == PrintfQualifierLong)
741 retval = print_wchar(va_arg(ap, wchar_t), width, flags, ps);
742 else
743 retval = print_char(va_arg(ap, unsigned int), width, flags, ps);
744
745 if (retval < 0) {
746 counter = -counter;
747 goto out;
748 };
749
750 counter += retval;
751 j = i + 1;
752 goto next_char;
753
754 /*
755 * Integer values
756 */
757 case 'P':
758 /* Pointer */
759 flags |= __PRINTF_FLAG_BIGCHARS;
760 case 'p':
761 flags |= __PRINTF_FLAG_PREFIX;
762 base = 16;
763 qualifier = PrintfQualifierPointer;
764 break;
765 case 'b':
766 base = 2;
767 break;
768 case 'o':
769 base = 8;
770 break;
771 case 'd':
772 case 'i':
773 flags |= __PRINTF_FLAG_SIGNED;
774 case 'u':
775 break;
776 case 'X':
777 flags |= __PRINTF_FLAG_BIGCHARS;
778 case 'x':
779 base = 16;
780 break;
781
782 /* Percentile itself */
783 case '%':
784 j = i;
785 goto next_char;
786
787 /*
788 * Bad formatting.
789 */
790 default:
791 /*
792 * Unknown format. Now, j is the index of '%'
793 * so we will print whole bad format sequence.
794 */
795 goto next_char;
796 }
797
798 /* Print integers */
799 size_t size;
800 uint64_t number;
801 switch (qualifier) {
802 case PrintfQualifierByte:
803 size = sizeof(unsigned char);
804 number = (uint64_t) va_arg(ap, unsigned int);
805 break;
806 case PrintfQualifierShort:
807 size = sizeof(unsigned short);
808 number = (uint64_t) va_arg(ap, unsigned int);
809 break;
810 case PrintfQualifierInt:
811 size = sizeof(unsigned int);
812 number = (uint64_t) va_arg(ap, unsigned int);
813 break;
814 case PrintfQualifierLong:
815 size = sizeof(unsigned long);
816 number = (uint64_t) va_arg(ap, unsigned long);
817 break;
818 case PrintfQualifierLongLong:
819 size = sizeof(unsigned long long);
820 number = (uint64_t) va_arg(ap, unsigned long long);
821 break;
822 case PrintfQualifierPointer:
823 size = sizeof(void *);
824 number = (uint64_t) (unsigned long) va_arg(ap, void *);
825 break;
826 default:
827 /* Unknown qualifier */
828 counter = -counter;
829 goto out;
830 }
831
832 if (flags & __PRINTF_FLAG_SIGNED) {
833 if (number & (0x1 << (size * 8 - 1))) {
834 flags |= __PRINTF_FLAG_NEGATIVE;
835
836 if (size == sizeof(uint64_t)) {
837 number = -((int64_t) number);
838 } else {
839 number = ~number;
840 number &=
841 ~(0xFFFFFFFFFFFFFFFFll <<
842 (size * 8));
843 number++;
844 }
845 }
846 }
847
848 if ((retval = print_number(number, width, precision,
849 base, flags, ps)) < 0) {
850 counter = -counter;
851 goto out;
852 }
853
854 counter += retval;
855 j = i + 1;
856 }
857next_char:
858
859 i++;
860 }
861
862 if (i > j) {
863 if ((retval = printf_putnchars_utf8(&fmt[j], i - j, ps)) < 0) {
864 /* Error */
865 counter = -counter;
866 goto out;
867 }
868 counter += retval;
869 }
870
871out:
872 return ((int) counter);
873}
874
875/** @}
876 */
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