[unix-history] / usr / src / bin / csh / printf.c

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)printf.c	5.4 (Berkeley) 6/16/91";
#endif /* not lint */

/*
 * tc.printf.c: A public-domain, minimal printf/sprintf routine that prints
 *	       through the putchar() routine.  Feel free to use for
 *	       anything...  -- 7/17/87 Paul Placeway
 */
#include <strings.h>
#include <stdlib.h>
#if __STDC__
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include "csh.h"
#include "char.h"
#include "extern.h"

#ifdef lint
#undef va_arg
#define va_arg(a, b) (a ? (b) 0 : (b) 0)
#endif

#define INF	32766		/* should be bigger than any field to print */

static unsigned char buf[128];

static void
doprnt(addchar, sfmt, ap)
    void    (*addchar) ();
    char   *sfmt;
    va_list ap;
{
    register unsigned char *f, *bp;
    register long l;
    register unsigned long u;
    register int i;
    register int fmt;
    register unsigned char pad = ' ';
    int     flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
    int     sign = 0;

    f = (unsigned char *) sfmt;
    for (; *f; f++) {
	if (*f != '%') {	/* then just out the char */
	    (*addchar) ((int) (*f));
	}
	else {
	    f++;		/* skip the % */

	    if (*f == '-') {	/* minus: flush left */
		flush_left = 1;
		f++;
	    }

	    if (*f == '0' || *f == '.') {
		/* padding with 0 rather than blank */
		pad = '0';
		f++;
	    }
	    if (*f == '*') {	/* field width */
		f_width = va_arg(ap, int);
		f++;
	    }
	    else if (Isdigit(*f)) {
		f_width = atoi((char *) f);
		while (Isdigit(*f))
		    f++;	/* skip the digits */
	    }

	    if (*f == '.') {	/* precision */
		f++;
		if (*f == '*') {
		    prec = va_arg(ap, int);
		    f++;
		}
		else if (Isdigit(*f)) {
		    prec = atoi((char *) f);
		    while (Isdigit(*f))
			f++;	/* skip the digits */
		}
	    }

	    if (*f == '#') {	/* alternate form */
		hash = 1;
		f++;
	    }

	    if (*f == 'l') {	/* long format */
		do_long = 1;
		f++;
	    }

	    fmt = *f;
	    if (Isupper(fmt)) {
		do_long = 1;
		fmt = Tolower(fmt);
	    }
	    bp = buf;
	    switch (fmt) {	/* do the format */
	    case 'd':
		if (do_long)
		    l = va_arg(ap, long);
		else
		    l = (long) (va_arg(ap, int));
		if (l < 0) {
		    sign = 1;
		    l = -l;
		}
		do {
		    *bp++ = l % 10 + '0';
		} while ((l /= 10) > 0);
		if (sign)
		    *bp++ = '-';
		f_width = f_width - (bp - buf);
		if (!flush_left)
		    while (f_width-- > 0)
			(*addchar) ((int) (pad));
		for (bp--; bp >= buf; bp--)
		    (*addchar) ((int) (*bp));
		if (flush_left)
		    while (f_width-- > 0)
			(*addchar) ((int) (' '));
		break;

	    case 'o':
	    case 'x':
	    case 'u':
		if (do_long)
		    u = va_arg(ap, unsigned long);
		else
		    u = (unsigned long) (va_arg(ap, unsigned));
		if (fmt == 'u') {	/* unsigned decimal */
		    do {
			*bp++ = u % 10 + '0';
		    } while ((u /= 10) > 0);
		}
		else if (fmt == 'o') {	/* octal */
		    do {
			*bp++ = u % 8 + '0';
		    } while ((u /= 8) > 0);
		    if (hash)
			*bp++ = '0';
		}
		else if (fmt == 'x') {	/* hex */
		    do {
			i = u % 16;
			if (i < 10)
			    *bp++ = i + '0';
			else
			    *bp++ = i - 10 + 'a';
		    } while ((u /= 16) > 0);
		    if (hash) {
			*bp++ = 'x';
			*bp++ = '0';
		    }
		}
		i = f_width - (bp - buf);
		if (!flush_left)
		    while (i-- > 0)
			(*addchar) ((int) (pad));
		for (bp--; bp >= buf; bp--)
		    (*addchar) ((int) (*bp));
		if (flush_left)
		    while (i-- > 0)
			(*addchar) ((int) (' '));
		break;


	    case 'c':
		i = va_arg(ap, int);
		(*addchar) ((int) (i));
		break;

	    case 's':
		bp = va_arg(ap, unsigned char *);
		if (!bp)
		    bp = (unsigned char *) "(nil)";
		f_width = f_width - strlen((char *) bp);
		if (!flush_left)
		    while (f_width-- > 0)
			(*addchar) ((int) (pad));
		for (i = 0; *bp && i < prec; i++) {
		    (*addchar) ((int) (*bp));
		    bp++;
		}
		if (flush_left)
		    while (f_width-- > 0)
			(*addchar) ((int) (' '));

		break;

	    case '%':
		(*addchar) ((int) ('%'));
		break;
	    }
	    flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
	    sign = 0;
	    pad = ' ';
	}
    }
}


static unsigned char *xstring;
static void
xaddchar(c)
    int     c;
{
    *xstring++ = c;
}


void
#if __STDC__
xsprintf(char *str, char *fmt, ...)
#else
xsprintf(str, fmt, va_alist)
    char   *str;
    char   *fmt;
    va_dcl
#endif
{
    va_list va;

#if __STDC__
    va_start(va, fmt);
#else
    va_start(va);
#endif
    xstring = (unsigned char *) str;
    doprnt(xaddchar, fmt, va);
    va_end(va);
    *xstring++ = '\0';
}


void
#if __STDC__
xprintf(char *fmt, ...)
#else
xprintf(fmt, va_alist)
    char   *fmt;
    va_dcl
#endif
{
    va_list va;

#if __STDC__
    va_start(va, fmt);
#else
    va_start(va);
#endif
    doprnt(xputchar, fmt, va);
    va_end(va);
}


void
xvprintf(fmt, va)
    char   *fmt;
    va_list va;
{
    doprnt(xputchar, fmt, va);
}

void
xvsprintf(str, fmt, va)
    char   *str;
    char   *fmt;
    va_list va;
{
    xstring = (unsigned char *) str;
    doprnt(xaddchar, fmt, va);
    *xstring++ = '\0';
}
Commit	Line	Data
0452c863 WJ	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	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.
	20	*
	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
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	static char sccsid[] = "@(#)printf.c 5.4 (Berkeley) 6/16/91";
	36	#endif /* not lint */
	37
	38	/*
	39	* tc.printf.c: A public-domain, minimal printf/sprintf routine that prints
	40	* through the putchar() routine. Feel free to use for
	41	* anything... -- 7/17/87 Paul Placeway
	42	*/
	43	#include <strings.h>
	44	#include <stdlib.h>
	45	#if __STDC__
	46	# include <stdarg.h>
	47	#else
	48	# include <varargs.h>
	49	#endif
	50	#include "csh.h"
	51	#include "char.h"
	52	#include "extern.h"
	53
	54	#ifdef lint
	55	#undef va_arg
	56	#define va_arg(a, b) (a ? (b) 0 : (b) 0)
	57	#endif
	58
	59	#define INF 32766 /* should be bigger than any field to print */
	60
	61	static unsigned char buf[128];
	62
	63	static void
	64	doprnt(addchar, sfmt, ap)
65	void (*addchar) ();
66	char *sfmt;
67	va_list ap;
68	{
69	register unsigned char f, bp;
70	register long l;
71	register unsigned long u;
72	register int i;
73	register int fmt;
74	register unsigned char pad = ' ';
75	int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
76	int sign = 0;
77
78	f = (unsigned char *) sfmt;
79	for (; *f; f++) {
80	if (f != '%') { / then just out the char */
81	(addchar) ((int) (f));
82	}
83	else {
84	f++; /* skip the % */
85
86	if (f == '-') { / minus: flush left */
87	flush_left = 1;
88	f++;
89	}
90
91	if (f == '0' \|\| f == '.') {
92	/* padding with 0 rather than blank */
93	pad = '0';
94	f++;
95	}
96	if (f == '') { /* field width */
97	f_width = va_arg(ap, int);
98	f++;
99	}
100	else if (Isdigit(*f)) {
101	f_width = atoi((char *) f);
102	while (Isdigit(*f))
103	f++; /* skip the digits */
104	}
105
106	if (f == '.') { / precision */
107	f++;
108	if (f == '') {
109	prec = va_arg(ap, int);
110	f++;
111	}
112	else if (Isdigit(*f)) {
113	prec = atoi((char *) f);
114	while (Isdigit(*f))
115	f++; /* skip the digits */
116	}
117	}
118
119	if (f == '#') { / alternate form */
120	hash = 1;
121	f++;
122	}
123
124	if (f == 'l') { / long format */
125	do_long = 1;
126	f++;
127	}
128
129	fmt = *f;
130	if (Isupper(fmt)) {
131	do_long = 1;
132	fmt = Tolower(fmt);
133	}
134	bp = buf;
135	switch (fmt) { /* do the format */
136	case 'd':
137	if (do_long)
138	l = va_arg(ap, long);
139	else
140	l = (long) (va_arg(ap, int));
141	if (l < 0) {
142	sign = 1;
143	l = -l;
144	}
145	do {
146	*bp++ = l % 10 + '0';
147	} while ((l /= 10) > 0);
148	if (sign)
149	*bp++ = '-';
150	f_width = f_width - (bp - buf);
151	if (!flush_left)
152	while (f_width-- > 0)
153	(*addchar) ((int) (pad));
154	for (bp--; bp >= buf; bp--)
155	(addchar) ((int) (bp));
156	if (flush_left)
157	while (f_width-- > 0)
158	(*addchar) ((int) (' '));
159	break;
160
161	case 'o':
162	case 'x':
163	case 'u':
164	if (do_long)
165	u = va_arg(ap, unsigned long);
166	else
167	u = (unsigned long) (va_arg(ap, unsigned));
168	if (fmt == 'u') { /* unsigned decimal */
169	do {
170	*bp++ = u % 10 + '0';
171	} while ((u /= 10) > 0);
172	}
173	else if (fmt == 'o') { /* octal */
174	do {
175	*bp++ = u % 8 + '0';
176	} while ((u /= 8) > 0);
177	if (hash)
178	*bp++ = '0';
179	}
180	else if (fmt == 'x') { /* hex */
181	do {
182	i = u % 16;
183	if (i < 10)
184	*bp++ = i + '0';
185	else
186	*bp++ = i - 10 + 'a';
187	} while ((u /= 16) > 0);
188	if (hash) {
189	*bp++ = 'x';
190	*bp++ = '0';
191	}
192	}
193	i = f_width - (bp - buf);
194	if (!flush_left)
195	while (i-- > 0)
196	(*addchar) ((int) (pad));
197	for (bp--; bp >= buf; bp--)
198	(addchar) ((int) (bp));
199	if (flush_left)
200	while (i-- > 0)
201	(*addchar) ((int) (' '));
202	break;
203
204
205	case 'c':
206	i = va_arg(ap, int);
207	(*addchar) ((int) (i));
208	break;
209
210	case 's':
211	bp = va_arg(ap, unsigned char *);
212	if (!bp)
213	bp = (unsigned char *) "(nil)";
214	f_width = f_width - strlen((char *) bp);
215	if (!flush_left)
216	while (f_width-- > 0)
217	(*addchar) ((int) (pad));
218	for (i = 0; *bp && i < prec; i++) {
219	(addchar) ((int) (bp));
220	bp++;
221	}
222	if (flush_left)
223	while (f_width-- > 0)
224	(*addchar) ((int) (' '));
225
226	break;
227
228	case '%':
229	(*addchar) ((int) ('%'));
230	break;
231	}
232	flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
233	sign = 0;
234	pad = ' ';
235	}
236	}
237	}
238
239
240	static unsigned char *xstring;
241	static void
242	xaddchar(c)
243	int c;
244	{
245	*xstring++ = c;
246	}
247
248
249	void
250	#if __STDC__
251	xsprintf(char str, char fmt, ...)
252	#else
253	xsprintf(str, fmt, va_alist)
254	char *str;
255	char *fmt;
256	va_dcl
257	#endif
258	{
259	va_list va;
260
261	#if __STDC__
262	va_start(va, fmt);
263	#else
264	va_start(va);
265	#endif
266	xstring = (unsigned char *) str;
267	doprnt(xaddchar, fmt, va);
268	va_end(va);
269	*xstring++ = '\0';
270	}
271
272
273	void
274	#if __STDC__
275	xprintf(char *fmt, ...)
276	#else
277	xprintf(fmt, va_alist)
278	char *fmt;
279	va_dcl
280	#endif
281	{
282	va_list va;
283
284	#if __STDC__
285	va_start(va, fmt);
286	#else
287	va_start(va);
288	#endif
289	doprnt(xputchar, fmt, va);
290	va_end(va);
291	}
292
293
294	void
295	xvprintf(fmt, va)
296	char *fmt;
297	va_list va;
298	{
299	doprnt(xputchar, fmt, va);
300	}
301
302	void
303	xvsprintf(str, fmt, va)
304	char *str;
305	char *fmt;
306	va_list va;
307	{
308	xstring = (unsigned char *) str;
309	doprnt(xaddchar, fmt, va);
310	*xstring++ = '\0';
311	}