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"
64 #define warnx1(a, b, c) warnx(a)
65 #define warnx2(a, b, c) warnx(a, b)
66 #define warnx3(a, b, c) warnx(a, b, c)
69 #define PF(f, func) { \
73 (void)asprintf(&b, f, fieldwidth, precision, func); \
75 (void)asprintf(&b, f, fieldwidth, func); \
77 (void)asprintf(&b, f, precision, func); \
79 (void)asprintf(&b, f, func); \
81 (void)fputs(b, stdout); \
86 static int asciicode __P((void));
87 static void escape __P((char *));
88 static int getchr __P((void));
89 static double getdouble __P((void));
90 static int getint __P((int *));
91 static int getquad __P((quad_t *));
92 static char *getstr __P((void));
93 static char *mklong __P((char *, int));
94 static void usage __P((void));
100 progprintf(argc, argv)
107 static char *skip1, *skip2;
108 int ch, end, fieldwidth, precision;
109 char convch, nextch, *format, *fmt, *start;
111 while ((ch = getopt(argc, argv, "")) != -1)
127 * Basic algorithm is to scan the format string for conversion
128 * specifications -- once one is found, find out if the field
129 * width or precision is a '*'; if it is, gather up value. Note,
130 * format strings are reused as necessary to use up the provided
131 * arguments, arguments of zero/null string are provided to use
132 * up the format string.
135 skip2 = "0123456789";
137 escape(fmt = format = *argv); /* backslash interpretation */
141 /* find next format specification */
142 next: for (start = fmt;; ++fmt) {
144 /* avoid infinite loop */
146 warnx1("missing format character",
152 (void)printf("%s", start);
163 (void)printf("%s", start);
168 /* skip to field width */
169 for (; strchr(skip1, *fmt); ++fmt);
171 if (getint(&fieldwidth))
177 /* skip to possible '.', get following precision */
178 for (; strchr(skip2, *fmt); ++fmt);
181 /* precision present? */
184 if (getint(&precision))
190 /* skip to conversion char */
191 for (; strchr(skip2, *fmt); ++fmt);
196 warnx1("missing format character", NULL, NULL);
218 case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
222 if ((f = mklong(start, convch)) == NULL)
229 case 'e': case 'E': case 'f': case 'g': case 'G': {
237 warnx2("illegal format character %c", convch, NULL);
250 static char copy[64];
253 len = strlen(str) + 2;
254 if (len > sizeof copy)
257 memmove(copy, str, len - 3);
260 copy[len - 1] = '\0';
268 register char *store;
269 register int value, c;
271 for (store = fmt; (c = *fmt); ++fmt, ++store) {
277 case '\0': /* EOS, user error */
281 case '\\': /* backslash */
282 case '\'': /* single quote */
285 case 'a': /* bell/alert */
288 case 'b': /* backspace */
291 case 'f': /* form-feed */
294 case 'n': /* newline */
297 case 'r': /* carriage-return */
300 case 't': /* horizontal tab */
303 case 'v': /* vertical tab */
307 case '0': case '1': case '2': case '3':
308 case '4': case '5': case '6': case '7':
309 for (c = 3, value = 0;
310 c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) {
330 return ((int)**gargv++);
341 static char *Number = "+-.0123456789";
350 if (val < INT_MIN || val > INT_MAX) {
351 warnx3("%s: %s", *gargv, strerror(ERANGE));
369 if (strchr(Number, **gargv)) {
371 val = strtoq(*gargv, &ep, 0);
373 warnx2("%s: illegal number", *gargv, NULL);
377 if (val == QUAD_MAX) {
378 warnx3("%s: %s", *gargv, strerror(ERANGE));
381 if (val == QUAD_MIN) {
382 warnx3("%s: %s", *gargv, strerror(ERANGE));
390 *lp = (long)asciicode();
399 if (strchr(Number, **gargv))
400 return (atof(*gargv++));
401 return ((double)asciicode());
410 if (ch == '\'' || ch == '"')
419 (void)fprintf(stderr, "usage: printf format [arg ...]\n");