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cce855bc JA |
1 | This file is printf.def, from which is created printf.c. |
2 | It implements the builtin "printf" in Bash. | |
3 | ||
3185942a | 4 | Copyright (C) 1997-2009 Free Software Foundation, Inc. |
cce855bc JA |
5 | |
6 | This file is part of GNU Bash, the Bourne Again SHell. | |
7 | ||
3185942a JA |
8 | Bash is free software: you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation, either version 3 of the License, or | |
11 | (at your option) any later version. | |
cce855bc | 12 | |
3185942a JA |
13 | Bash is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
cce855bc | 17 | |
3185942a JA |
18 | You should have received a copy of the GNU General Public License |
19 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
cce855bc JA |
20 | |
21 | $PRODUCES printf.c | |
22 | ||
23 | $BUILTIN printf | |
24 | $FUNCTION printf_builtin | |
95732b49 | 25 | $SHORT_DOC printf [-v var] format [arguments] |
3185942a JA |
26 | Formats and prints ARGUMENTS under control of the FORMAT. |
27 | ||
28 | Options: | |
29 | -v var assign the output to shell variable VAR rather than | |
30 | display it on the standard output | |
31 | ||
32 | FORMAT is a character string which contains three types of objects: plain | |
33 | characters, which are simply copied to standard output; character escape | |
34 | sequences, which are converted and copied to the standard output; and | |
cce855bc | 35 | format specifications, each of which causes printing of the next successive |
3185942a JA |
36 | argument. |
37 | ||
38 | In addition to the standard format specifications described in printf(1) | |
39 | and printf(3), printf interprets: | |
40 | ||
41 | %b expand backslash escape sequences in the corresponding argument | |
42 | %q quote the argument in a way that can be reused as shell input | |
43 | ||
44 | Exit Status: | |
45 | Returns success unless an invalid option is given or a write or assignment | |
46 | error occurs. | |
cce855bc JA |
47 | $END |
48 | ||
49 | #include <config.h> | |
50 | ||
51 | #include "../bashtypes.h" | |
52 | ||
53 | #include <errno.h> | |
54 | #if defined (HAVE_LIMITS_H) | |
55 | # include <limits.h> | |
56 | #else | |
f73dda09 | 57 | /* Assume 32-bit ints. */ |
cce855bc JA |
58 | # define INT_MAX 2147483647 |
59 | # define INT_MIN (-2147483647-1) | |
60 | #endif | |
61 | ||
f1be666c JA |
62 | #if defined (PREFER_STDARG) |
63 | # include <stdarg.h> | |
64 | #else | |
65 | # include <varargs.h> | |
66 | #endif | |
67 | ||
cce855bc | 68 | #include <stdio.h> |
f73dda09 JA |
69 | #include <chartypes.h> |
70 | ||
71 | #ifdef HAVE_INTTYPES_H | |
72 | # include <inttypes.h> | |
73 | #endif | |
cce855bc JA |
74 | |
75 | #include "../bashansi.h" | |
b80f6443 | 76 | #include "../bashintl.h" |
f73dda09 | 77 | |
cce855bc | 78 | #include "../shell.h" |
3185942a | 79 | #include "shmbutil.h" |
bb70624e | 80 | #include "stdc.h" |
cce855bc | 81 | #include "bashgetopt.h" |
f73dda09 JA |
82 | #include "common.h" |
83 | ||
f1be666c JA |
84 | #if defined (PRI_MACROS_BROKEN) |
85 | # undef PRIdMAX | |
86 | #endif | |
87 | ||
7117c2d2 JA |
88 | #if !defined (PRIdMAX) |
89 | # if HAVE_LONG_LONG | |
90 | # define PRIdMAX "lld" | |
91 | # else | |
92 | # define PRIdMAX "ld" | |
93 | # endif | |
f73dda09 | 94 | #endif |
cce855bc JA |
95 | |
96 | #if !defined (errno) | |
97 | extern int errno; | |
98 | #endif | |
99 | ||
95732b49 JA |
100 | #define PC(c) \ |
101 | do { \ | |
102 | char b[2]; \ | |
103 | tw++; \ | |
104 | b[0] = c; b[1] = '\0'; \ | |
105 | if (vflag) \ | |
106 | vbadd (b, 1); \ | |
107 | else \ | |
108 | putchar (c); \ | |
109 | } while (0) | |
110 | ||
cce855bc JA |
111 | #define PF(f, func) \ |
112 | do { \ | |
95732b49 | 113 | int nw; \ |
0628567a | 114 | clearerr (stdout); \ |
f73dda09 | 115 | if (have_fieldwidth && have_precision) \ |
3185942a | 116 | nw = vflag ? vbprintf (f, fieldwidth, precision, func) : printf (f, fieldwidth, precision, func); \ |
f73dda09 | 117 | else if (have_fieldwidth) \ |
3185942a | 118 | nw = vflag ? vbprintf (f, fieldwidth, func) : printf (f, fieldwidth, func); \ |
f73dda09 | 119 | else if (have_precision) \ |
3185942a | 120 | nw = vflag ? vbprintf (f, precision, func) : printf (f, fieldwidth, func); \ |
cce855bc | 121 | else \ |
3185942a | 122 | nw = vflag ? vbprintf (f, func) : printf (f, func); \ |
95732b49 | 123 | tw += nw; \ |
3185942a | 124 | if (ferror (stdout)) \ |
95732b49 | 125 | { \ |
3185942a JA |
126 | sh_wrerror (); \ |
127 | clearerr (stdout); \ | |
128 | return (EXECUTION_FAILURE); \ | |
95732b49 | 129 | } \ |
cce855bc JA |
130 | } while (0) |
131 | ||
f73dda09 | 132 | /* We free the buffer used by mklong() if it's `too big'. */ |
cce855bc | 133 | #define PRETURN(value) \ |
f73dda09 JA |
134 | do \ |
135 | { \ | |
95732b49 JA |
136 | if (vflag) \ |
137 | { \ | |
138 | bind_variable (vname, vbuf, 0); \ | |
139 | stupidly_hack_special_variables (vname); \ | |
140 | } \ | |
f73dda09 JA |
141 | if (conv_bufsize > 4096 ) \ |
142 | { \ | |
95732b49 | 143 | free (conv_buf); \ |
f73dda09 JA |
144 | conv_bufsize = 0; \ |
145 | conv_buf = 0; \ | |
146 | } \ | |
95732b49 JA |
147 | if (vbsize > 4096) \ |
148 | { \ | |
149 | free (vbuf); \ | |
150 | vbsize = 0; \ | |
151 | vbuf = 0; \ | |
152 | } \ | |
3185942a JA |
153 | else if (vbuf) \ |
154 | vbuf[0] = 0; \ | |
155 | terminate_immediately--; \ | |
f73dda09 | 156 | fflush (stdout); \ |
0628567a JA |
157 | if (ferror (stdout)) \ |
158 | { \ | |
159 | clearerr (stdout); \ | |
160 | return (EXECUTION_FAILURE); \ | |
161 | } \ | |
f73dda09 JA |
162 | return (value); \ |
163 | } \ | |
164 | while (0) | |
165 | ||
166 | #define SKIP1 "#'-+ 0" | |
167 | #define LENMODS "hjlLtz" | |
cce855bc | 168 | |
f1be666c JA |
169 | #ifndef HAVE_ASPRINTF |
170 | extern int asprintf __P((char **, const char *, ...)) __attribute__((__format__ (printf, 2, 3))); | |
171 | #endif | |
172 | ||
3185942a JA |
173 | #ifndef HAVE_VSNPRINTF |
174 | extern int vsnprintf __P((char *, size_t, const char *, ...)) __attribute__((__format__ (printf, 3, 4))); | |
175 | #endif | |
176 | ||
7117c2d2 | 177 | static void printf_erange __P((char *)); |
95732b49 | 178 | static int printstr __P((char *, char *, int, int, int)); |
b80f6443 | 179 | static int tescape __P((char *, char *, int *)); |
cce855bc | 180 | static char *bexpand __P((char *, int, int *, int *)); |
95732b49 | 181 | static char *vbadd __P((char *, int)); |
3185942a | 182 | static int vbprintf __P((const char *, ...)) __attribute__((__format__ (printf, 1, 2))); |
7117c2d2 | 183 | static char *mklong __P((char *, char *, size_t)); |
cce855bc JA |
184 | static int getchr __P((void)); |
185 | static char *getstr __P((void)); | |
186 | static int getint __P((void)); | |
f73dda09 JA |
187 | static intmax_t getintmax __P((void)); |
188 | static uintmax_t getuintmax __P((void)); | |
7117c2d2 | 189 | |
b80f6443 | 190 | #if defined (HAVE_LONG_DOUBLE) && HAVE_DECL_STRTOLD && !defined(STRTOLD_BROKEN) |
7117c2d2 JA |
191 | typedef long double floatmax_t; |
192 | # define FLOATMAX_CONV "L" | |
193 | # define strtofltmax strtold | |
194 | #else | |
195 | typedef double floatmax_t; | |
196 | # define FLOATMAX_CONV "" | |
197 | # define strtofltmax strtod | |
f73dda09 | 198 | #endif |
7117c2d2 JA |
199 | static floatmax_t getfloatmax __P((void)); |
200 | ||
3185942a | 201 | static intmax_t asciicode __P((void)); |
cce855bc JA |
202 | |
203 | static WORD_LIST *garglist; | |
204 | static int retval; | |
f73dda09 | 205 | static int conversion_error; |
cce855bc | 206 | |
95732b49 JA |
207 | /* printf -v var support */ |
208 | static int vflag = 0; | |
209 | static char *vbuf, *vname; | |
210 | static size_t vbsize; | |
211 | static int vblen; | |
212 | ||
213 | static intmax_t tw; | |
214 | ||
f73dda09 JA |
215 | static char *conv_buf; |
216 | static size_t conv_bufsize; | |
cce855bc JA |
217 | |
218 | int | |
219 | printf_builtin (list) | |
220 | WORD_LIST *list; | |
221 | { | |
f73dda09 JA |
222 | int ch, fieldwidth, precision; |
223 | int have_fieldwidth, have_precision; | |
f73dda09 | 224 | char convch, thisch, nextch, *format, *modstart, *fmt, *start; |
cce855bc | 225 | |
f73dda09 | 226 | conversion_error = 0; |
cce855bc | 227 | retval = EXECUTION_SUCCESS; |
7117c2d2 | 228 | |
95732b49 JA |
229 | vflag = 0; |
230 | ||
231 | reset_internal_getopt (); | |
232 | while ((ch = internal_getopt (list, "v:")) != -1) | |
233 | { | |
234 | switch (ch) | |
235 | { | |
236 | case 'v': | |
237 | if (legal_identifier (vname = list_optarg)) | |
238 | { | |
239 | vflag = 1; | |
240 | vblen = 0; | |
3185942a JA |
241 | if (vbuf) |
242 | vbuf[0] = 0; | |
95732b49 JA |
243 | } |
244 | else | |
245 | { | |
246 | sh_invalidid (vname); | |
247 | return (EX_USAGE); | |
248 | } | |
249 | break; | |
250 | default: | |
251 | builtin_usage (); | |
252 | return (EX_USAGE); | |
253 | } | |
254 | } | |
7117c2d2 | 255 | list = loptend; /* skip over possible `--' */ |
cce855bc JA |
256 | |
257 | if (list == 0) | |
258 | { | |
259 | builtin_usage (); | |
260 | return (EX_USAGE); | |
261 | } | |
262 | ||
263 | if (list->word->word == 0 || list->word->word[0] == '\0') | |
264 | return (EXECUTION_SUCCESS); | |
265 | ||
bb70624e | 266 | format = list->word->word; |
95732b49 | 267 | tw = 0; |
cce855bc JA |
268 | |
269 | garglist = list->next; | |
270 | ||
bc4cd23c | 271 | /* If the format string is empty after preprocessing, return immediately. */ |
bb70624e | 272 | if (format == 0 || *format == 0) |
bc4cd23c | 273 | return (EXECUTION_SUCCESS); |
3185942a JA |
274 | |
275 | terminate_immediately++; | |
bc4cd23c | 276 | |
cce855bc JA |
277 | /* Basic algorithm is to scan the format string for conversion |
278 | specifications -- once one is found, find out if the field | |
279 | width or precision is a '*'; if it is, gather up value. Note, | |
280 | format strings are reused as necessary to use up the provided | |
281 | arguments, arguments of zero/null string are provided to use | |
282 | up the format string. */ | |
cce855bc JA |
283 | do |
284 | { | |
f73dda09 | 285 | tw = 0; |
cce855bc | 286 | /* find next format specification */ |
bb70624e | 287 | for (fmt = format; *fmt; fmt++) |
cce855bc | 288 | { |
f73dda09 JA |
289 | precision = fieldwidth = 0; |
290 | have_fieldwidth = have_precision = 0; | |
291 | ||
bb70624e JA |
292 | if (*fmt == '\\') |
293 | { | |
294 | fmt++; | |
b80f6443 JA |
295 | /* A NULL third argument to tescape means to bypass the |
296 | special processing for arguments to %b. */ | |
297 | fmt += tescape (fmt, &nextch, (int *)NULL); | |
95732b49 | 298 | PC (nextch); |
bb70624e JA |
299 | fmt--; /* for loop will increment it for us again */ |
300 | continue; | |
301 | } | |
302 | ||
cce855bc JA |
303 | if (*fmt != '%') |
304 | { | |
95732b49 | 305 | PC (*fmt); |
cce855bc JA |
306 | continue; |
307 | } | |
308 | ||
309 | /* ASSERT(*fmt == '%') */ | |
310 | start = fmt++; | |
311 | ||
312 | if (*fmt == '%') /* %% prints a % */ | |
313 | { | |
95732b49 | 314 | PC ('%'); |
cce855bc JA |
315 | continue; |
316 | } | |
317 | ||
318 | /* found format specification, skip to field width */ | |
319 | for (; *fmt && strchr(SKIP1, *fmt); ++fmt) | |
320 | ; | |
cce855bc | 321 | |
f73dda09 JA |
322 | /* Skip optional field width. */ |
323 | if (*fmt == '*') | |
324 | { | |
325 | fmt++; | |
326 | have_fieldwidth = 1; | |
327 | fieldwidth = getint (); | |
328 | } | |
329 | else | |
330 | while (DIGIT (*fmt)) | |
331 | fmt++; | |
332 | ||
333 | /* Skip optional '.' and precision */ | |
cce855bc JA |
334 | if (*fmt == '.') |
335 | { | |
336 | ++fmt; | |
f73dda09 JA |
337 | if (*fmt == '*') |
338 | { | |
339 | fmt++; | |
340 | have_precision = 1; | |
341 | precision = getint (); | |
342 | } | |
343 | else | |
95732b49 JA |
344 | { |
345 | /* Negative precisions are allowed but treated as if the | |
346 | precision were missing; I would like to allow a leading | |
347 | `+' in the precision number as an extension, but lots | |
348 | of asprintf/fprintf implementations get this wrong. */ | |
349 | #if 0 | |
350 | if (*fmt == '-' || *fmt == '+') | |
351 | #else | |
352 | if (*fmt == '-') | |
353 | #endif | |
354 | fmt++; | |
355 | while (DIGIT (*fmt)) | |
356 | fmt++; | |
357 | } | |
cce855bc JA |
358 | } |
359 | ||
cce855bc | 360 | /* skip possible format modifiers */ |
f73dda09 JA |
361 | modstart = fmt; |
362 | while (*fmt && strchr (LENMODS, *fmt)) | |
363 | fmt++; | |
cce855bc | 364 | |
b72432fd JA |
365 | if (*fmt == 0) |
366 | { | |
b80f6443 | 367 | builtin_error (_("`%s': missing format character"), start); |
b72432fd JA |
368 | PRETURN (EXECUTION_FAILURE); |
369 | } | |
370 | ||
cce855bc | 371 | convch = *fmt; |
f73dda09 JA |
372 | thisch = modstart[0]; |
373 | nextch = modstart[1]; | |
374 | modstart[0] = convch; | |
375 | modstart[1] = '\0'; | |
376 | ||
cce855bc JA |
377 | switch(convch) |
378 | { | |
379 | case 'c': | |
380 | { | |
381 | char p; | |
382 | ||
383 | p = getchr (); | |
384 | PF(start, p); | |
385 | break; | |
386 | } | |
387 | ||
388 | case 's': | |
389 | { | |
390 | char *p; | |
391 | ||
392 | p = getstr (); | |
393 | PF(start, p); | |
394 | break; | |
395 | } | |
396 | ||
f73dda09 JA |
397 | case 'n': |
398 | { | |
399 | char *var; | |
400 | ||
401 | var = getstr (); | |
402 | if (var && *var) | |
403 | { | |
404 | if (legal_identifier (var)) | |
405 | bind_var_to_int (var, tw); | |
406 | else | |
407 | { | |
7117c2d2 | 408 | sh_invalidid (var); |
f73dda09 JA |
409 | PRETURN (EXECUTION_FAILURE); |
410 | } | |
411 | } | |
412 | break; | |
413 | } | |
414 | ||
cce855bc JA |
415 | case 'b': /* expand escapes in argument */ |
416 | { | |
417 | char *p, *xp; | |
95732b49 | 418 | int rlen, r; |
cce855bc JA |
419 | |
420 | p = getstr (); | |
95732b49 | 421 | ch = rlen = r = 0; |
cce855bc JA |
422 | xp = bexpand (p, strlen (p), &ch, &rlen); |
423 | ||
424 | if (xp) | |
425 | { | |
426 | /* Have to use printstr because of possible NUL bytes | |
427 | in XP -- printf does not handle that well. */ | |
95732b49 JA |
428 | r = printstr (start, xp, rlen, fieldwidth, precision); |
429 | if (r < 0) | |
430 | { | |
431 | sh_wrerror (); | |
432 | clearerr (stdout); | |
433 | retval = EXECUTION_FAILURE; | |
434 | } | |
cce855bc JA |
435 | free (xp); |
436 | } | |
437 | ||
95732b49 | 438 | if (ch || r < 0) |
cce855bc JA |
439 | PRETURN (retval); |
440 | break; | |
441 | } | |
442 | ||
443 | case 'q': /* print with shell quoting */ | |
444 | { | |
445 | char *p, *xp; | |
95732b49 | 446 | int r; |
cce855bc | 447 | |
95732b49 | 448 | r = 0; |
cce855bc | 449 | p = getstr (); |
0628567a JA |
450 | if (p && *p == 0) /* XXX - getstr never returns null */ |
451 | xp = savestring ("''"); | |
452 | else if (ansic_shouldquote (p)) | |
7117c2d2 JA |
453 | xp = ansic_quote (p, 0, (int *)0); |
454 | else | |
455 | xp = sh_backslash_quote (p); | |
cce855bc JA |
456 | if (xp) |
457 | { | |
458 | /* Use printstr to get fieldwidth and precision right. */ | |
95732b49 JA |
459 | r = printstr (start, xp, strlen (xp), fieldwidth, precision); |
460 | if (r < 0) | |
461 | { | |
462 | sh_wrerror (); | |
463 | clearerr (stdout); | |
464 | } | |
cce855bc JA |
465 | free (xp); |
466 | } | |
95732b49 JA |
467 | |
468 | if (r < 0) | |
469 | PRETURN (EXECUTION_FAILURE); | |
cce855bc JA |
470 | break; |
471 | } | |
472 | ||
473 | case 'd': | |
474 | case 'i': | |
475 | { | |
cce855bc | 476 | char *f; |
7117c2d2 JA |
477 | long p; |
478 | intmax_t pp; | |
f73dda09 | 479 | |
7117c2d2 JA |
480 | p = pp = getintmax (); |
481 | if (p != pp) | |
f73dda09 | 482 | { |
7117c2d2 JA |
483 | f = mklong (start, PRIdMAX, sizeof (PRIdMAX) - 2); |
484 | PF (f, pp); | |
f73dda09 | 485 | } |
cce855bc | 486 | else |
f73dda09 | 487 | { |
7117c2d2 JA |
488 | /* Optimize the common case where the integer fits |
489 | in "long". This also works around some long | |
490 | long and/or intmax_t library bugs in the common | |
491 | case, e.g. glibc 2.2 x86. */ | |
492 | f = mklong (start, "l", 1); | |
493 | PF (f, p); | |
f73dda09 | 494 | } |
cce855bc JA |
495 | break; |
496 | } | |
497 | ||
498 | case 'o': | |
499 | case 'u': | |
500 | case 'x': | |
501 | case 'X': | |
502 | { | |
cce855bc | 503 | char *f; |
7117c2d2 JA |
504 | unsigned long p; |
505 | uintmax_t pp; | |
f73dda09 | 506 | |
7117c2d2 JA |
507 | p = pp = getuintmax (); |
508 | if (p != pp) | |
f73dda09 | 509 | { |
7117c2d2 JA |
510 | f = mklong (start, PRIdMAX, sizeof (PRIdMAX) - 2); |
511 | PF (f, pp); | |
f73dda09 | 512 | } |
cce855bc | 513 | else |
f73dda09 | 514 | { |
7117c2d2 | 515 | f = mklong (start, "l", 1); |
f73dda09 JA |
516 | PF (f, p); |
517 | } | |
cce855bc JA |
518 | break; |
519 | } | |
520 | ||
521 | case 'e': | |
522 | case 'E': | |
523 | case 'f': | |
f73dda09 | 524 | case 'F': |
cce855bc JA |
525 | case 'g': |
526 | case 'G': | |
f73dda09 JA |
527 | #if defined (HAVE_PRINTF_A_FORMAT) |
528 | case 'a': | |
529 | case 'A': | |
530 | #endif | |
cce855bc | 531 | { |
f73dda09 | 532 | char *f; |
7117c2d2 | 533 | floatmax_t p; |
f73dda09 | 534 | |
7117c2d2 JA |
535 | p = getfloatmax (); |
536 | f = mklong (start, FLOATMAX_CONV, sizeof(FLOATMAX_CONV) - 1); | |
537 | PF (f, p); | |
cce855bc JA |
538 | break; |
539 | } | |
540 | ||
bb70624e JA |
541 | /* We don't output unrecognized format characters; we print an |
542 | error message and return a failure exit status. */ | |
cce855bc | 543 | default: |
b80f6443 | 544 | builtin_error (_("`%c': invalid format character"), convch); |
cce855bc JA |
545 | PRETURN (EXECUTION_FAILURE); |
546 | } | |
547 | ||
f73dda09 JA |
548 | modstart[0] = thisch; |
549 | modstart[1] = nextch; | |
cce855bc | 550 | } |
95732b49 JA |
551 | |
552 | if (ferror (stdout)) | |
553 | { | |
554 | sh_wrerror (); | |
555 | clearerr (stdout); | |
556 | PRETURN (EXECUTION_FAILURE); | |
557 | } | |
cce855bc | 558 | } |
bc4cd23c | 559 | while (garglist && garglist != list->next); |
cce855bc | 560 | |
f73dda09 JA |
561 | if (conversion_error) |
562 | retval = EXECUTION_FAILURE; | |
563 | ||
cce855bc JA |
564 | PRETURN (retval); |
565 | } | |
566 | ||
7117c2d2 JA |
567 | static void |
568 | printf_erange (s) | |
569 | char *s; | |
570 | { | |
3185942a | 571 | builtin_error (_("warning: %s: %s"), s, strerror(ERANGE)); |
7117c2d2 JA |
572 | } |
573 | ||
cce855bc | 574 | /* We duplicate a lot of what printf(3) does here. */ |
95732b49 | 575 | static int |
cce855bc JA |
576 | printstr (fmt, string, len, fieldwidth, precision) |
577 | char *fmt; /* format */ | |
578 | char *string; /* expanded string argument */ | |
579 | int len; /* length of expanded string */ | |
580 | int fieldwidth; /* argument for width of `*' */ | |
581 | int precision; /* argument for precision of `*' */ | |
582 | { | |
583 | #if 0 | |
584 | char *s; | |
585 | #endif | |
586 | int padlen, nc, ljust, i; | |
587 | int fw, pr; /* fieldwidth and precision */ | |
588 | ||
95732b49 | 589 | #if 0 |
cce855bc | 590 | if (string == 0 || *string == '\0') |
95732b49 JA |
591 | #else |
592 | if (string == 0 || len == 0) | |
593 | #endif | |
3185942a | 594 | return 0; |
cce855bc JA |
595 | |
596 | #if 0 | |
597 | s = fmt; | |
598 | #endif | |
599 | if (*fmt == '%') | |
600 | fmt++; | |
601 | ||
f73dda09 JA |
602 | ljust = fw = 0; |
603 | pr = -1; | |
cce855bc JA |
604 | |
605 | /* skip flags */ | |
f73dda09 | 606 | while (strchr (SKIP1, *fmt)) |
cce855bc JA |
607 | { |
608 | if (*fmt == '-') | |
609 | ljust = 1; | |
610 | fmt++; | |
611 | } | |
612 | ||
613 | /* get fieldwidth, if present */ | |
614 | if (*fmt == '*') | |
615 | { | |
616 | fmt++; | |
617 | fw = fieldwidth; | |
f73dda09 JA |
618 | if (fw < 0) |
619 | { | |
620 | fw = -fw; | |
621 | ljust = 1; | |
622 | } | |
cce855bc | 623 | } |
f73dda09 | 624 | else if (DIGIT (*fmt)) |
cce855bc JA |
625 | { |
626 | fw = *fmt++ - '0'; | |
f73dda09 | 627 | while (DIGIT (*fmt)) |
cce855bc JA |
628 | fw = (fw * 10) + (*fmt++ - '0'); |
629 | } | |
630 | ||
631 | /* get precision, if present */ | |
632 | if (*fmt == '.') | |
633 | { | |
634 | fmt++; | |
635 | if (*fmt == '*') | |
636 | { | |
637 | fmt++; | |
638 | pr = precision; | |
639 | } | |
f73dda09 | 640 | else if (DIGIT (*fmt)) |
cce855bc JA |
641 | { |
642 | pr = *fmt++ - '0'; | |
f73dda09 | 643 | while (DIGIT (*fmt)) |
cce855bc JA |
644 | pr = (pr * 10) + (*fmt++ - '0'); |
645 | } | |
646 | } | |
647 | ||
648 | #if 0 | |
649 | /* If we remove this, get rid of `s'. */ | |
650 | if (*fmt != 'b' && *fmt != 'q') | |
651 | { | |
652 | internal_error ("format parsing problem: %s", s); | |
653 | fw = pr = 0; | |
654 | } | |
655 | #endif | |
656 | ||
657 | /* chars from string to print */ | |
f73dda09 | 658 | nc = (pr >= 0 && pr <= len) ? pr : len; |
cce855bc JA |
659 | |
660 | padlen = fw - nc; | |
661 | if (padlen < 0) | |
662 | padlen = 0; | |
663 | if (ljust) | |
664 | padlen = -padlen; | |
665 | ||
666 | /* leading pad characters */ | |
667 | for (; padlen > 0; padlen--) | |
95732b49 | 668 | PC (' '); |
cce855bc JA |
669 | |
670 | /* output NC characters from STRING */ | |
671 | for (i = 0; i < nc; i++) | |
95732b49 | 672 | PC (string[i]); |
cce855bc JA |
673 | |
674 | /* output any necessary trailing padding */ | |
675 | for (; padlen < 0; padlen++) | |
95732b49 JA |
676 | PC (' '); |
677 | ||
678 | return (ferror (stdout) ? -1 : 0); | |
cce855bc JA |
679 | } |
680 | ||
681 | /* Convert STRING by expanding the escape sequences specified by the | |
682 | POSIX standard for printf's `%b' format string. If SAWC is non-null, | |
b80f6443 | 683 | perform the processing appropriate for %b arguments. In particular, |
cce855bc JA |
684 | recognize `\c' and use that as a string terminator. If we see \c, set |
685 | *SAWC to 1 before returning. LEN is the length of STRING. */ | |
686 | ||
bb70624e JA |
687 | /* Translate a single backslash-escape sequence starting at ESTART (the |
688 | character after the backslash) and return the number of characters | |
689 | consumed by the sequence. CP is the place to return the translated | |
690 | value. *SAWC is set to 1 if the escape sequence was \c, since that means | |
691 | to short-circuit the rest of the processing. If SAWC is null, we don't | |
692 | do the \c short-circuiting, and \c is treated as an unrecognized escape | |
b80f6443 | 693 | sequence; we also bypass the other processing specific to %b arguments. */ |
bb70624e | 694 | static int |
b80f6443 | 695 | tescape (estart, cp, sawc) |
bb70624e | 696 | char *estart; |
bb70624e JA |
697 | char *cp; |
698 | int *sawc; | |
699 | { | |
700 | register char *p; | |
701 | int temp, c, evalue; | |
702 | ||
703 | p = estart; | |
704 | ||
705 | switch (c = *p++) | |
706 | { | |
707 | #if defined (__STDC__) | |
708 | case 'a': *cp = '\a'; break; | |
709 | #else | |
710 | case 'a': *cp = '\007'; break; | |
711 | #endif | |
712 | ||
713 | case 'b': *cp = '\b'; break; | |
714 | ||
28ef6c31 JA |
715 | case 'e': |
716 | case 'E': *cp = '\033'; break; /* ESC -- non-ANSI */ | |
bb70624e JA |
717 | |
718 | case 'f': *cp = '\f'; break; | |
719 | ||
720 | case 'n': *cp = '\n'; break; | |
721 | ||
722 | case 'r': *cp = '\r'; break; | |
723 | ||
724 | case 't': *cp = '\t'; break; | |
725 | ||
726 | case 'v': *cp = '\v'; break; | |
727 | ||
b80f6443 JA |
728 | /* The octal escape sequences are `\0' followed by up to three octal |
729 | digits (if SAWC), or `\' followed by up to three octal digits (if | |
730 | !SAWC). As an extension, we allow the latter form even if SAWC. */ | |
731 | case '0': case '1': case '2': case '3': | |
732 | case '4': case '5': case '6': case '7': | |
733 | evalue = OCTVALUE (c); | |
734 | for (temp = 2 + (!evalue && !!sawc); ISOCTAL (*p) && temp--; p++) | |
bb70624e | 735 | evalue = (evalue * 8) + OCTVALUE (*p); |
f73dda09 | 736 | *cp = evalue & 0xFF; |
bb70624e JA |
737 | break; |
738 | ||
739 | /* And, as another extension, we allow \xNNN, where each N is a | |
740 | hex digit. */ | |
741 | case 'x': | |
b80f6443 JA |
742 | #if 0 |
743 | for (evalue = 0; ISXDIGIT ((unsigned char)*p); p++) | |
744 | #else | |
f73dda09 | 745 | for (temp = 2, evalue = 0; ISXDIGIT ((unsigned char)*p) && temp--; p++) |
b80f6443 | 746 | #endif |
bb70624e | 747 | evalue = (evalue * 16) + HEXVALUE (*p); |
b80f6443 | 748 | if (p == estart + 1) |
bb70624e | 749 | { |
b80f6443 | 750 | builtin_error (_("missing hex digit for \\x")); |
bb70624e JA |
751 | *cp = '\\'; |
752 | return 0; | |
753 | } | |
f73dda09 | 754 | *cp = evalue & 0xFF; |
bb70624e JA |
755 | break; |
756 | ||
757 | case '\\': /* \\ -> \ */ | |
758 | *cp = c; | |
759 | break; | |
760 | ||
b80f6443 JA |
761 | /* SAWC == 0 means that \', \", and \? are recognized as escape |
762 | sequences, though the only processing performed is backslash | |
763 | removal. */ | |
764 | case '\'': case '"': case '?': | |
765 | if (!sawc) | |
bb70624e JA |
766 | *cp = c; |
767 | else | |
768 | { | |
769 | *cp = '\\'; | |
770 | return 0; | |
771 | } | |
772 | break; | |
773 | ||
774 | case 'c': | |
775 | if (sawc) | |
776 | { | |
777 | *sawc = 1; | |
778 | break; | |
779 | } | |
780 | /* other backslash escapes are passed through unaltered */ | |
781 | default: | |
782 | *cp = '\\'; | |
783 | return 0; | |
784 | } | |
785 | return (p - estart); | |
786 | } | |
787 | ||
cce855bc JA |
788 | static char * |
789 | bexpand (string, len, sawc, lenp) | |
790 | char *string; | |
791 | int len, *sawc, *lenp; | |
792 | { | |
bb70624e JA |
793 | int temp; |
794 | char *ret, *r, *s, c; | |
cce855bc | 795 | |
95732b49 | 796 | #if 0 |
cce855bc | 797 | if (string == 0 || *string == '\0') |
95732b49 JA |
798 | #else |
799 | if (string == 0 || len == 0) | |
800 | #endif | |
cce855bc JA |
801 | { |
802 | if (sawc) | |
803 | *sawc = 0; | |
804 | if (lenp) | |
805 | *lenp = 0; | |
806 | return ((char *)NULL); | |
807 | } | |
808 | ||
f73dda09 | 809 | ret = (char *)xmalloc (len + 1); |
cce855bc JA |
810 | for (r = ret, s = string; s && *s; ) |
811 | { | |
812 | c = *s++; | |
813 | if (c != '\\' || *s == '\0') | |
814 | { | |
815 | *r++ = c; | |
816 | continue; | |
817 | } | |
bb70624e | 818 | temp = 0; |
b80f6443 | 819 | s += tescape (s, &c, &temp); |
bb70624e | 820 | if (temp) |
cce855bc | 821 | { |
cce855bc JA |
822 | if (sawc) |
823 | *sawc = 1; | |
bb70624e | 824 | break; |
cce855bc JA |
825 | } |
826 | ||
827 | *r++ = c; | |
828 | } | |
829 | ||
830 | *r = '\0'; | |
831 | if (lenp) | |
832 | *lenp = r - ret; | |
833 | return ret; | |
834 | } | |
835 | ||
95732b49 JA |
836 | static char * |
837 | vbadd (buf, blen) | |
838 | char *buf; | |
839 | int blen; | |
840 | { | |
841 | size_t nlen; | |
842 | ||
843 | nlen = vblen + blen + 1; | |
844 | if (nlen >= vbsize) | |
845 | { | |
846 | vbsize = ((nlen + 63) >> 6) << 6; | |
847 | vbuf = (char *)xrealloc (vbuf, vbsize); | |
848 | } | |
849 | ||
850 | if (blen == 1) | |
851 | vbuf[vblen++] = buf[0]; | |
3185942a | 852 | else if (blen > 1) |
95732b49 JA |
853 | { |
854 | FASTCOPY (buf, vbuf + vblen, blen); | |
855 | vblen += blen; | |
856 | } | |
857 | vbuf[vblen] = '\0'; | |
858 | ||
859 | #ifdef DEBUG | |
860 | if (strlen (vbuf) != vblen) | |
0628567a | 861 | internal_error ("printf:vbadd: vblen (%d) != strlen (vbuf) (%d)", vblen, (int)strlen (vbuf)); |
95732b49 JA |
862 | #endif |
863 | ||
864 | return vbuf; | |
865 | } | |
866 | ||
3185942a JA |
867 | static int |
868 | #if defined (PREFER_STDARG) | |
869 | vbprintf (const char *format, ...) | |
870 | #else | |
871 | vbprintf (format, va_alist) | |
872 | const char *format; | |
873 | va_dcl | |
874 | #endif | |
875 | { | |
876 | va_list args; | |
877 | size_t nlen; | |
878 | int blen; | |
879 | ||
880 | SH_VA_START (args, format); | |
881 | blen = vsnprintf (vbuf + vblen, vbsize - vblen, format, args); | |
882 | ||
883 | nlen = vblen + blen + 1; | |
884 | if (nlen >= vbsize) | |
885 | { | |
886 | vbsize = ((nlen + 63) >> 6) << 6; | |
887 | vbuf = (char *)xrealloc (vbuf, vbsize); | |
888 | blen = vsnprintf (vbuf + vblen, vbsize - vblen, format, args); | |
889 | } | |
890 | ||
891 | va_end (args); | |
892 | vblen += blen; | |
893 | vbuf[vblen] = '\0'; | |
894 | ||
895 | #ifdef DEBUG | |
896 | if (strlen (vbuf) != vblen) | |
897 | internal_error ("printf:vbadd: vblen (%d) != strlen (vbuf) (%d)", vblen, (int)strlen (vbuf)); | |
898 | #endif | |
899 | ||
900 | return (blen); | |
901 | } | |
902 | ||
cce855bc | 903 | static char * |
7117c2d2 | 904 | mklong (str, modifiers, mlen) |
cce855bc | 905 | char *str; |
f73dda09 | 906 | char *modifiers; |
7117c2d2 | 907 | size_t mlen; |
cce855bc | 908 | { |
7117c2d2 | 909 | size_t len, slen; |
f73dda09 JA |
910 | |
911 | slen = strlen (str); | |
f73dda09 JA |
912 | len = slen + mlen + 1; |
913 | ||
914 | if (len > conv_bufsize) | |
915 | { | |
916 | conv_bufsize = (((len + 1023) >> 10) << 10); | |
917 | conv_buf = (char *)xrealloc (conv_buf, conv_bufsize); | |
918 | } | |
919 | ||
920 | FASTCOPY (str, conv_buf, slen - 1); | |
921 | FASTCOPY (modifiers, conv_buf + slen - 1, mlen); | |
922 | ||
923 | conv_buf[len - 2] = str[slen - 1]; | |
924 | conv_buf[len - 1] = '\0'; | |
925 | return (conv_buf); | |
cce855bc JA |
926 | } |
927 | ||
928 | static int | |
929 | getchr () | |
930 | { | |
931 | int ret; | |
932 | ||
933 | if (garglist == 0) | |
934 | return ('\0'); | |
935 | ||
936 | ret = (int)garglist->word->word[0]; | |
937 | garglist = garglist->next; | |
938 | return ret; | |
939 | } | |
940 | ||
941 | static char * | |
942 | getstr () | |
943 | { | |
944 | char *ret; | |
945 | ||
946 | if (garglist == 0) | |
947 | return (""); | |
948 | ||
949 | ret = garglist->word->word; | |
950 | garglist = garglist->next; | |
951 | return ret; | |
952 | } | |
953 | ||
954 | static int | |
955 | getint () | |
956 | { | |
7117c2d2 | 957 | intmax_t ret; |
cce855bc | 958 | |
7117c2d2 | 959 | ret = getintmax (); |
cce855bc JA |
960 | |
961 | if (ret > INT_MAX) | |
962 | { | |
7117c2d2 | 963 | printf_erange (garglist->word->word); |
28ef6c31 JA |
964 | ret = INT_MAX; |
965 | } | |
966 | else if (ret < INT_MIN) | |
967 | { | |
7117c2d2 | 968 | printf_erange (garglist->word->word); |
28ef6c31 | 969 | ret = INT_MIN; |
cce855bc JA |
970 | } |
971 | ||
972 | return ((int)ret); | |
973 | } | |
974 | ||
f73dda09 JA |
975 | static intmax_t |
976 | getintmax () | |
cce855bc | 977 | { |
f73dda09 | 978 | intmax_t ret; |
28ef6c31 | 979 | char *ep; |
cce855bc JA |
980 | |
981 | if (garglist == 0) | |
f73dda09 JA |
982 | return (0); |
983 | ||
984 | if (garglist->word->word[0] == '\'' || garglist->word->word[0] == '"') | |
985 | return asciicode (); | |
986 | ||
987 | errno = 0; | |
988 | ret = strtoimax (garglist->word->word, &ep, 0); | |
989 | ||
990 | if (*ep) | |
28ef6c31 | 991 | { |
7117c2d2 | 992 | sh_invalidnum (garglist->word->word); |
f73dda09 JA |
993 | /* POSIX.2 says ``...a diagnostic message shall be written to standard |
994 | error, and the utility shall not exit with a zero exit status, but | |
995 | shall continue processing any remaining operands and shall write the | |
996 | value accumulated at the time the error was detected to standard | |
997 | output.'' Yecch. */ | |
998 | ret = 0; | |
999 | conversion_error = 1; | |
28ef6c31 | 1000 | } |
f73dda09 | 1001 | else if (errno == ERANGE) |
7117c2d2 | 1002 | printf_erange (garglist->word->word); |
f73dda09 JA |
1003 | |
1004 | garglist = garglist->next; | |
1005 | return (ret); | |
1006 | } | |
1007 | ||
1008 | static uintmax_t | |
1009 | getuintmax () | |
1010 | { | |
1011 | uintmax_t ret; | |
1012 | char *ep; | |
1013 | ||
1014 | if (garglist == 0) | |
1015 | return (0); | |
cce855bc JA |
1016 | |
1017 | if (garglist->word->word[0] == '\'' || garglist->word->word[0] == '"') | |
f73dda09 JA |
1018 | return asciicode (); |
1019 | ||
1020 | errno = 0; | |
1021 | ret = strtoumax (garglist->word->word, &ep, 0); | |
1022 | ||
1023 | if (*ep) | |
28ef6c31 | 1024 | { |
7117c2d2 JA |
1025 | sh_invalidnum (garglist->word->word); |
1026 | /* Same POSIX.2 conversion error requirements as getintmax(). */ | |
f73dda09 JA |
1027 | ret = 0; |
1028 | conversion_error = 1; | |
28ef6c31 | 1029 | } |
f73dda09 | 1030 | else if (errno == ERANGE) |
7117c2d2 | 1031 | printf_erange (garglist->word->word); |
f73dda09 JA |
1032 | |
1033 | garglist = garglist->next; | |
1034 | return (ret); | |
1035 | } | |
1036 | ||
7117c2d2 JA |
1037 | static floatmax_t |
1038 | getfloatmax () | |
f73dda09 | 1039 | { |
7117c2d2 | 1040 | floatmax_t ret; |
f73dda09 JA |
1041 | char *ep; |
1042 | ||
1043 | if (garglist == 0) | |
1044 | return (0); | |
1045 | ||
1046 | if (garglist->word->word[0] == '\'' || garglist->word->word[0] == '"') | |
1047 | return asciicode (); | |
cce855bc | 1048 | |
28ef6c31 | 1049 | errno = 0; |
7117c2d2 | 1050 | ret = strtofltmax (garglist->word->word, &ep); |
f73dda09 | 1051 | |
28ef6c31 JA |
1052 | if (*ep) |
1053 | { | |
7117c2d2 | 1054 | sh_invalidnum (garglist->word->word); |
f73dda09 JA |
1055 | /* Same thing about POSIX.2 conversion error requirements. */ |
1056 | ret = 0; | |
1057 | conversion_error = 1; | |
28ef6c31 JA |
1058 | } |
1059 | else if (errno == ERANGE) | |
7117c2d2 | 1060 | printf_erange (garglist->word->word); |
28ef6c31 | 1061 | |
cce855bc | 1062 | garglist = garglist->next; |
f73dda09 | 1063 | return (ret); |
cce855bc JA |
1064 | } |
1065 | ||
1066 | /* NO check is needed for garglist here. */ | |
3185942a | 1067 | static intmax_t |
cce855bc JA |
1068 | asciicode () |
1069 | { | |
3185942a JA |
1070 | register intmax_t ch; |
1071 | #if defined (HANDLE_MULTIBYTE) | |
1072 | wchar_t wc; | |
1073 | size_t mblength, slen; | |
1074 | #endif | |
1075 | DECLARE_MBSTATE; | |
1076 | ||
1077 | #if defined (HANDLE_MULTIBYTE) | |
1078 | slen = strlen (garglist->word->word+1); | |
1079 | mblength = MBLEN (garglist->word->word+1, slen); | |
1080 | if (mblength > 1) | |
1081 | { | |
1082 | mblength = mbtowc (&wc, garglist->word->word+1, slen); | |
1083 | ch = wc; /* XXX */ | |
1084 | } | |
1085 | else | |
1086 | #endif | |
1087 | ch = (unsigned char)garglist->word->word[1]; | |
cce855bc | 1088 | |
cce855bc JA |
1089 | garglist = garglist->next; |
1090 | return (ch); | |
1091 | } |