mkheaders.c revision 69004 
1/*
2 * Copyright (c) 1980, 1993
3 *	The Regents of the University of California.  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#if 0
36static char sccsid[] = "@(#)mkheaders.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/usr.sbin/config/mkheaders.c 69004 2000-11-21 19:58:55Z imp $";
40#endif /* not lint */
41
42/*
43 * Make all the .h files for the optional entries
44 */
45
46#include <ctype.h>
47#include <err.h>
48#include <stdio.h>
49#include <string.h>
50#include <sys/param.h>
51#include "config.h"
52#include "y.tab.h"
53
54static void do_header(char *, int);
55static void do_count(char *);
56static char *toheader(char *);
57static char *tomacro(char *);
58
59void
60headers(void)
61{
62	struct file_list *fl;
63	struct device *dp;
64
65	for (fl = ftab; fl != 0; fl = fl->f_next) {
66		if (fl->f_needs != 0) {
67			for (dp = dtab; dp != 0; dp = dp->d_next) {
68				if (eq(dp->d_name, fl->f_needs)) {
69					if ((dp->d_type & TYPEMASK) == DEVICE)
70						dp->d_type |= DEVDONE;
71				}
72			}
73			if (fl->f_flags & NEED_COUNT)
74				do_count(fl->f_needs);
75		}
76	}
77	for (dp = dtab; dp != 0; dp = dp->d_next) {
78		if ((dp->d_type & TYPEMASK) == DEVICE) {
79			if (!(dp->d_type & DEVDONE))
80				printf("Warning: device \"%s\" is unknown\n",
81				       dp->d_name);
82		}
83	}
84}
85
86/*
87 * count all the devices of a certain type and recurse to count
88 * whatever the device is connected to
89 */
90static void
91do_count(char *dev)
92{
93	struct device *dp;
94	int count, hicount;
95
96	/*
97	 * After this loop, "count" will be the actual number of units,
98	 * and "hicount" will be the highest unit declared.  do_header()
99	 * must use this higher of these values.
100	 */
101	for (hicount = count = 0, dp = dtab; dp != 0; dp = dp->d_next) {
102		if (eq(dp->d_name, dev)) {
103			count =
104			    dp->d_count != UNKNOWN ? dp->d_count : 1;
105			break;
106		}
107	}
108	do_header(dev, count);
109}
110
111static void
112do_header(char *dev, int count)
113{
114	char *file, *name, *inw;
115	struct file_list *fl, *fl_head, *tflp;
116	FILE *inf, *outf;
117	int inc, oldcount;
118
119	file = toheader(dev);
120	name = tomacro(dev);
121	inf = fopen(file, "r");
122	oldcount = -1;
123	if (inf == 0) {
124		outf = fopen(file, "w");
125		if (outf == 0)
126			err(1, "%s", file);
127		fprintf(outf, "#define %s %d\n", name, count);
128		(void) fclose(outf);
129		return;
130	}
131	fl_head = NULL;
132	for (;;) {
133		char *cp;
134		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
135			break;
136		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
137			break;
138		inw = ns(inw);
139		cp = get_word(inf);
140		if (cp == 0 || cp == (char *)EOF)
141			break;
142		inc = atoi(cp);
143		if (eq(inw, name)) {
144			oldcount = inc;
145			inc = count;
146		}
147		cp = get_word(inf);
148		if (cp == (char *)EOF)
149			break;
150		fl = (struct file_list *) malloc(sizeof *fl);
151		bzero(fl, sizeof(*fl));
152		fl->f_fn = inw;		/* malloced */
153		fl->f_type = inc;
154		fl->f_next = fl_head;
155		fl_head = fl;
156	}
157	(void) fclose(inf);
158	if (count == oldcount) {
159		for (fl = fl_head; fl != NULL; fl = tflp) {
160			tflp = fl->f_next;
161			free(fl->f_fn);
162			free(fl);
163		}
164		return;
165	}
166	if (oldcount == -1) {
167		fl = (struct file_list *) malloc(sizeof *fl);
168		bzero(fl, sizeof(*fl));
169		fl->f_fn = ns(name);
170		fl->f_type = count;
171		fl->f_next = fl_head;
172		fl_head = fl;
173	}
174	outf = fopen(file, "w");
175	if (outf == 0)
176		err(1, "%s", file);
177	for (fl = fl_head; fl != NULL; fl = tflp) {
178		fprintf(outf,
179		    "#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
180		tflp = fl->f_next;
181		free(fl->f_fn);
182		free(fl);
183	}
184	(void) fclose(outf);
185}
186
187/*
188 * convert a dev name to a .h file name
189 */
190static char *
191toheader(char *dev)
192{
193	static char hbuf[MAXPATHLEN];
194
195	snprintf(hbuf, sizeof(hbuf), "%s.h", path(dev));
196	return (hbuf);
197}
198
199/*
200 * convert a dev name to a macro name
201 */
202static char *
203tomacro(char *dev)
204{
205	static char mbuf[20];
206	char *cp;
207
208	cp = mbuf;
209	*cp++ = 'N';
210	while (*dev)
211		*cp++ = islower(*dev) ? toupper(*dev++) : *dev++;
212	*cp++ = 0;
213	return (mbuf);
214}
215