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";
43 static char const sccsid[] = "@(#)printf.c 8.1 (Berkeley) 7/20/93";
46 #include <sys/types.h>
57 #define main printfcmd
58 #include "bltin/bltin.h"
60 #define warnx1(a, b, c) warnx(a)
61 #define warnx2(a, b, c) warnx(a, b)
62 #define warnx3(a, b, c) warnx(a, b, c)
65 #define PF(f, func) { \
69 (void)asprintf(&b, f, fieldwidth, precision, func); \
71 (void)asprintf(&b, f, fieldwidth, func); \
73 (void)asprintf(&b, f, precision, func); \
75 (void)asprintf(&b, f, func); \
77 (void)fputs(b, stdout); \
82 static int asciicode __P((void));
83 static void escape __P((char *));
84 static int getchr __P((void));
85 static double getdouble __P((void));
86 static int getint __P((int *));
87 static int getlong __P((long *));
88 static char *getstr __P((void));
89 static char *mklong __P((char *, int));
90 static void usage __P((void));
96 progprintf(argc, argv)
104 static char *skip1, *skip2;
105 int ch, end, fieldwidth, precision;
106 char convch, nextch, *format, *fmt, *start;
108 while ((ch = getopt(argc, argv, "")) != -1)
124 * Basic algorithm is to scan the format string for conversion
125 * specifications -- once one is found, find out if the field
126 * width or precision is a '*'; if it is, gather up value. Note,
127 * format strings are reused as necessary to use up the provided
128 * arguments, arguments of zero/null string are provided to use
129 * up the format string.
132 skip2 = "0123456789";
134 escape(fmt = format = *argv); /* backslash interpretation */
138 /* find next format specification */
139 next: for (start = fmt;; ++fmt) {
141 /* avoid infinite loop */
143 warnx1("missing format character",
149 (void)printf("%s", start);
160 (void)printf("%s", start);
165 /* skip to field width */
166 for (; strchr(skip1, *fmt); ++fmt);
168 if (getint(&fieldwidth))
174 /* skip to possible '.', get following precision */
175 for (; strchr(skip2, *fmt); ++fmt);
178 /* precision present? */
181 if (getint(&precision))
187 /* skip to conversion char */
188 for (; strchr(skip2, *fmt); ++fmt);
193 warnx1("missing format character", NULL, NULL);
215 case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
219 if ((f = mklong(start, convch)) == NULL)
226 case 'e': case 'E': case 'f': case 'g': case 'G': {
234 warnx2("illegal format character %c", convch, NULL);
247 static char copy[64];
250 len = strlen(str) + 2;
251 memmove(copy, str, len - 3);
254 copy[len - 1] = '\0';
262 register char *store;
263 register int value, c;
265 for (store = fmt; (c = *fmt); ++fmt, ++store) {
271 case '\0': /* EOS, user error */
275 case '\\': /* backslash */
276 case '\'': /* single quote */
279 case 'a': /* bell/alert */
282 case 'b': /* backspace */
285 case 'f': /* form-feed */
288 case 'n': /* newline */
291 case 'r': /* carriage-return */
294 case 't': /* horizontal tab */
297 case 'v': /* vertical tab */
301 case '0': case '1': case '2': case '3':
302 case '4': case '5': case '6': case '7':
303 for (c = 3, value = 0;
304 c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) {
324 return ((int)**gargv++);
335 static char *Number = "+-.0123456789";
345 warnx3("%s: %s", *gargv, strerror(ERANGE));
363 if (strchr(Number, **gargv)) {
365 val = strtol(*gargv, &ep, 0);
367 warnx2("%s: illegal number", *gargv, NULL);
371 if (val == LONG_MAX) {
372 warnx3("%s: %s", *gargv, strerror(ERANGE));
375 if (val == LONG_MIN) {
376 warnx3("%s: %s", *gargv, strerror(ERANGE));
384 *lp = (long)asciicode();
393 if (strchr(Number, **gargv))
394 return (atof(*gargv++));
395 return ((double)asciicode());
404 if (ch == '\'' || ch == '"')
413 (void)fprintf(stderr, "usage: printf format [arg ...]\n");