2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #if !defined(BUILTIN) && !defined(SHELL)
36 static char const copyright[] =
37 "@(#) Copyright (c) 1989, 1993\n\
38 The Regents of the University of California. All rights reserved.\n";
44 static char const sccsid[] = "@(#)printf.c 8.1 (Berkeley) 7/20/93";
46 static const char rcsid[] =
50 #include <sys/types.h>
61 #define main printfcmd
62 #include "bltin/bltin.h"
65 #define warnx1(a, b, c) warnx(a)
66 #define warnx2(a, b, c) warnx(a, b)
67 #define warnx3(a, b, c) warnx(a, b, c)
74 #define PF(f, func) { \
78 (void)asprintf(&b, f, fieldwidth, precision, func); \
80 (void)asprintf(&b, f, fieldwidth, func); \
82 (void)asprintf(&b, f, precision, func); \
84 (void)asprintf(&b, f, func); \
86 (void)fputs(b, stdout); \
91 static int asciicode(void);
92 static void escape(char *);
93 static int getchr(void);
94 static double getdouble(void);
95 static int getint(int *);
96 static int getquad(quad_t *);
97 static const char *getstr(void);
98 static char *mklong(char *, int);
99 static void usage(void);
105 progprintf(argc, argv)
112 static const char *skip1, *skip2;
113 int ch, end, fieldwidth, precision;
114 char convch, nextch, *format, *fmt, *start;
117 (void) setlocale(LC_NUMERIC, "");
119 while ((ch = getopt(argc, argv, "")) != -1)
135 * Basic algorithm is to scan the format string for conversion
136 * specifications -- once one is found, find out if the field
137 * width or precision is a '*'; if it is, gather up value. Note,
138 * format strings are reused as necessary to use up the provided
139 * arguments, arguments of zero/null string are provided to use
140 * up the format string.
143 skip2 = "0123456789";
145 escape(fmt = format = *argv); /* backslash interpretation */
149 /* find next format specification */
150 next: for (start = fmt;; ++fmt) {
152 /* avoid infinite loop */
154 warnx1("missing format character",
160 (void)printf("%s", start);
171 (void)printf("%s", start);
176 /* skip to field width */
177 for (; strchr(skip1, *fmt); ++fmt);
179 if (getint(&fieldwidth))
185 /* skip to possible '.', get following precision */
186 for (; strchr(skip2, *fmt); ++fmt);
189 /* precision present? */
192 if (getint(&precision))
198 /* skip to conversion char */
199 for (; strchr(skip2, *fmt); ++fmt);
204 warnx1("missing format character", NULL, NULL);
226 case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
230 if ((f = mklong(start, convch)) == NULL)
237 case 'e': case 'E': case 'f': case 'g': case 'G': {
245 warnx2("illegal format character %c", convch, NULL);
259 static size_t copy_size;
263 len = strlen(str) + 2;
264 if (len > copy_size) {
265 newlen = ((len + 1023) >> 10) << 10;
267 if ((newcopy = ckrealloc(copy, newlen)) == NULL)
269 if ((newcopy = realloc(copy, newlen)) == NULL)
276 memmove(copy, str, len - 3);
279 copy[len - 1] = '\0';
287 register char *store;
288 register int value, c;
290 for (store = fmt; (c = *fmt); ++fmt, ++store) {
296 case '\0': /* EOS, user error */
300 case '\\': /* backslash */
301 case '\'': /* single quote */
304 case 'a': /* bell/alert */
307 case 'b': /* backspace */
310 case 'f': /* form-feed */
313 case 'n': /* newline */
316 case 'r': /* carriage-return */
319 case 't': /* horizontal tab */
322 case 'v': /* vertical tab */
326 case '0': case '1': case '2': case '3':
327 case '4': case '5': case '6': case '7':
328 for (c = 3, value = 0;
329 c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) {
349 return ((int)**gargv++);
360 static const char *Number = "+-.0123456789";
369 if (val < INT_MIN || val > INT_MAX) {
370 warnx3("%s: %s", *gargv, strerror(ERANGE));
388 if (strchr(Number, **gargv)) {
390 val = strtoq(*gargv, &ep, 0);
392 warnx2("%s: illegal number", *gargv, NULL);
396 if (val == QUAD_MAX) {
397 warnx3("%s: %s", *gargv, strerror(ERANGE));
400 if (val == QUAD_MIN) {
401 warnx3("%s: %s", *gargv, strerror(ERANGE));
409 *lp = (long)asciicode();
418 if (strchr(Number, **gargv))
419 return (atof(*gargv++));
420 return ((double)asciicode());
429 if (ch == '\'' || ch == '"')
438 (void)fprintf(stderr, "usage: printf format [arg ...]\n");