2 * Copyright (c) 1986, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
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7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
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11 * modification, are permitted provided that the following conditions
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14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
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28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94
39 * $FreeBSD: src/lib/libstand/printf.c,v 1.4 1999/12/27 08:45:14 peter Exp $
40 * $DragonFly: src/lib/libstand/printf.c,v 1.3 2003/11/09 02:34:03 dillon Exp $
44 * Standaloneified version of the FreeBSD kernel printf family.
47 #include <sys/types.h>
52 * Note that stdarg.h and the ANSI style va_start macro is used for both
53 * ANSI and traditional C compilers.
57 static char *ksprintn (u_long num, int base, int *len);
58 static int kvprintf(char const *fmt, void (*func)(int), void *arg, int radix, va_list ap);
61 printf(const char *fmt, ...)
67 retval = kvprintf(fmt, putchar, NULL, 10, ap);
73 vprintf(const char *fmt, va_list ap)
76 kvprintf(fmt, putchar, NULL, 10, ap);
80 sprintf(char *buf, const char *cfmt, ...)
86 retval = kvprintf(cfmt, NULL, (void *)buf, 10, ap);
93 vsprintf(char *buf, const char *cfmt, va_list ap)
97 retval = kvprintf(cfmt, NULL, (void *)buf, 10, ap);
102 * Put a number (base <= 16) in a buffer in reverse order; return an
103 * optional length and a pointer to the NULL terminated (preceded?)
107 ksprintn(ul, base, lenp)
109 register int base, *lenp;
110 { /* A long in base 8, plus NULL. */
111 static char buf[sizeof(long) * NBBY / 3 + 2];
116 *++p = hex2ascii(ul % base);
117 } while (ul /= base);
124 * Scaled down version of printf(3).
126 * Two additional formats:
128 * The format %b is supported to decode error registers.
131 * printf("reg=%b\n", regval, "<base><arg>*");
133 * where <base> is the output base expressed as a control character, e.g.
134 * \10 gives octal; \20 gives hex. Each arg is a sequence of characters,
135 * the first of which gives the bit number to be inspected (origin 1), and
136 * the next characters (up to a control character, i.e. a character <= 32),
137 * give the name of the register. Thus:
139 * kvprintf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
141 * would produce output:
143 * reg=3<BITTWO,BITONE>
145 * XXX: %D -- Hexdump, takes pointer and separator string:
146 * ("%6D", ptr, ":") -> XX:XX:XX:XX:XX:XX
147 * ("%*D", len, ptr, " " -> XX XX XX XX ...
150 kvprintf(char const *fmt, void (*func)(int), void *arg, int radix, va_list ap)
152 #define PCHAR(c) {int cc=(c); if (func) (*func)(cc); else *d++ = cc; retval++; }
157 int base, lflag, tmp, width, ladjust, sharpflag, neg, sign, dot;
168 fmt = "(fmt null)\n";
170 if (radix < 2 || radix > 36)
176 while ((ch = (u_char)*fmt++) != '%') {
181 lflag = 0; ladjust = 0; sharpflag = 0; neg = 0;
182 sign = 0; dot = 0; dwidth = 0;
183 reswitch: switch (ch = (u_char)*fmt++) {
201 width = va_arg(ap, int);
207 dwidth = va_arg(ap, int);
215 case '1': case '2': case '3': case '4':
216 case '5': case '6': case '7': case '8': case '9':
217 for (n = 0;; ++fmt) {
218 n = n * 10 + ch - '0';
220 if (ch < '0' || ch > '9')
229 ul = va_arg(ap, int);
230 p = va_arg(ap, char *);
231 for (q = ksprintn(ul, *p++, NULL); *q;)
239 if (ul & (1 << (n - 1))) {
240 PCHAR(tmp ? ',' : '<');
241 for (; (n = *p) > ' '; ++p)
245 for (; *p > ' '; ++p)
252 PCHAR(va_arg(ap, int));
255 up = va_arg(ap, u_char *);
256 p = va_arg(ap, char *);
260 PCHAR(hex2ascii(*up >> 4));
261 PCHAR(hex2ascii(*up & 0x0f));
269 ul = lflag ? va_arg(ap, long) : va_arg(ap, int);
277 ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
281 ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
285 ul = (u_long)va_arg(ap, void *);
290 p = va_arg(ap, char *);
296 for (n = 0; n < dwidth && p[n]; n++)
301 if (!ladjust && width > 0)
306 if (ladjust && width > 0)
311 ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
315 ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
317 number: if (sign && (long)ul < 0L) {
321 p = ksprintn(ul, base, &tmp);
322 if (sharpflag && ul != 0) {
331 if (!ladjust && width && (width -= tmp) > 0)
336 if (sharpflag && ul != 0) {
339 } else if (base == 16) {
348 if (ladjust && width && (width -= tmp) > 0)