1 /* $Header: /src/pub/tcsh/tc.printf.c,v 3.23 2002/03/08 17:36:47 christos Exp $ */
3 * tc.printf.c: A public-domain, minimal printf/sprintf routine that prints
4 * through the putchar() routine. Feel free to use for
5 * anything... -- 7/17/87 Paul Placeway
8 * Copyright (c) 1980, 1991 The Regents of the University of California.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 RCSID("$Id: tc.printf.c,v 3.23 2002/03/08 17:36:47 christos Exp $")
41 #define va_arg(a, b) (a ? (b) 0 : (b) 0)
44 #define INF 32766 /* should be bigger than any field to print */
48 static void xaddchar __P((int));
49 static void doprnt __P((void (*) __P((int)), const char *, va_list));
52 doprnt(addchar, sfmt, ap)
53 void (*addchar) __P((int));
61 #endif /* SHORT_STRINGS */
71 unsigned char pad = ' ';
72 int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
79 if (*f != '%') { /* then just out the char */
80 (*addchar) ((int) (((unsigned char)*f) | attributes));
85 if (*f == '-') { /* minus: flush left */
90 if (*f == '0' || *f == '.') {
91 /* padding with 0 rather than blank */
95 if (*f == '*') { /* field width */
96 f_width = va_arg(ap, int);
99 else if (Isdigit((unsigned char) *f)) {
101 while (Isdigit((unsigned char) *f))
102 f++; /* skip the digits */
105 if (*f == '.') { /* precision */
108 prec = va_arg(ap, int);
111 else if (Isdigit((unsigned char) *f)) {
112 prec = atoi((char *) f);
113 while (Isdigit((unsigned char) *f))
114 f++; /* skip the digits */
118 if (*f == '#') { /* alternate form */
123 if (*f == 'l') { /* long format */
132 fmt = (unsigned char) *f;
133 if (fmt != 'S' && fmt != 'Q' && Isupper(fmt)) {
138 switch (fmt) { /* do the format */
142 l = (long) (va_arg(ap, int));
148 l = va_arg(ap, long);
152 l = va_arg(ap, long long);
162 *bp++ = (char) (l % 10) + '0';
163 } while ((l /= 10) > 0);
166 f_width = f_width - (int) (bp - buf);
168 while (f_width-- > 0)
169 (*addchar) ((int) (pad | attributes));
170 for (bp--; bp >= buf; bp--)
171 (*addchar) ((int) (((unsigned char) *bp) | attributes));
173 while (f_width-- > 0)
174 (*addchar) ((int) (' ' | attributes));
182 u = (unsigned long) (va_arg(ap, unsigned int));
188 u = va_arg(ap, unsigned long);
192 u = va_arg(ap, unsigned long long);
196 if (fmt == 'u') { /* unsigned decimal */
198 *bp++ = (char) (u % 10) + '0';
199 } while ((u /= 10) > 0);
201 else if (fmt == 'o') { /* octal */
203 *bp++ = (char) (u % 8) + '0';
204 } while ((u /= 8) > 0);
208 else if (fmt == 'x') { /* hex */
214 *bp++ = i - 10 + 'a';
215 } while ((u /= 16) > 0);
221 i = f_width - (int) (bp - buf);
224 (*addchar) ((int) (pad | attributes));
225 for (bp--; bp >= buf; bp--)
226 (*addchar) ((int) (((unsigned char) *bp) | attributes));
229 (*addchar) ((int) (' ' | attributes));
235 (*addchar) ((int) (i | attributes));
241 Bp = va_arg(ap, Char *);
246 f_width = f_width - Strlen(Bp);
248 while (f_width-- > 0)
249 (*addchar) ((int) (pad | attributes));
250 for (i = 0; *Bp && i < prec; i++) {
251 if (fmt == 'Q' && *Bp & QUOTE)
252 (*addchar) ((int) ('\\' | attributes));
253 (*addchar) ((int) ((*Bp & TRIM) | attributes));
257 while (f_width-- > 0)
258 (*addchar) ((int) (' ' | attributes));
260 #endif /* SHORT_STRINGS */
264 bp = va_arg(ap, char *);
268 f_width = f_width - strlen((char *) bp);
270 while (f_width-- > 0)
271 (*addchar) ((int) (pad | attributes));
272 for (i = 0; *bp && i < prec; i++) {
273 if (fmt == 'q' && *bp & QUOTE)
274 (*addchar) ((int) ('\\' | attributes));
275 (*addchar) ((int) (((unsigned char) *bp & TRIM) |
280 while (f_width-- > 0)
281 (*addchar) ((int) (' ' | attributes));
285 attributes = va_arg(ap, int);
289 (*addchar) ((int) ('%' | attributes));
295 flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
303 static char *xstring, *xestring;
308 if (xestring == xstring)
311 *xstring++ = (char) c;
318 xsnprintf(char *str, size_t size, const char *fmt, ...)
332 str = va_arg(va, char *);
333 size = va_arg(va, size_t);
334 fmt = va_arg(va, char *);
338 xestring = str + size - 1;
339 doprnt(xaddchar, fmt, va);
350 xprintf(const char *fmt, ...)
363 fmt = va_arg(va, char *);
365 doprnt(xputchar, fmt, va);
378 doprnt(xputchar, fmt, va);
385 xvsnprintf(str, size, fmt, va)
392 xestring = str + size - 1;
393 doprnt(xaddchar, fmt, va);
403 /* Purify uses (some of..) the following functions to output memory-use
404 * debugging info. Given all the messing with file descriptors that
405 * tcsh does, the easiest way I could think of to get it (Purify) to
406 * print anything was by replacing some standard functions with
407 * ones that do tcsh output directly - see dumb hook in doreaddirs()
415 fprintf(FILE *fp, const char* fmt, ...)
429 fp = va_arg(va, FILE *);
430 fmt = va_arg(va, const char *);
432 doprnt(xputchar, fmt, va);
438 vfprintf(fp, fmt, va)
443 doprnt(xputchar, fmt, va);