mkheaders.c revision 61640 
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 61640 2000-06-13 22:28:50Z peter $";
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 "config.h"
51#include "y.tab.h"
52
53static void do_header(char *, int);
54static void do_count(char *);
55static char *toheader(char *);
56static char *tomacro(char *);
57
58void
59headers(void)
60{
61	struct file_list *fl;
62	struct device *dp;
63
64	for (fl = ftab; fl != 0; fl = fl->f_next) {
65		if (fl->f_needs != 0) {
66			for (dp = dtab; dp != 0; dp = dp->d_next) {
67				if (eq(dp->d_name, fl->f_needs)) {
68					if ((dp->d_type & TYPEMASK) == DEVICE)
69						dp->d_type |= DEVDONE;
70				}
71			}
72			if (fl->f_flags & NEED_COUNT)
73				do_count(fl->f_needs);
74		}
75	}
76	for (dp = dtab; dp != 0; dp = dp->d_next) {
77		if ((dp->d_type & TYPEMASK) == DEVICE) {
78			if (!(dp->d_type & DEVDONE))
79				printf("Warning: device \"%s\" is unknown\n",
80				       dp->d_name);
81		}
82	}
83}
84
85/*
86 * count all the devices of a certain type and recurse to count
87 * whatever the device is connected to
88 */
89static void
90do_count(char *dev)
91{
92	struct device *dp;
93	int count, hicount;
94
95	/*
96	 * After this loop, "count" will be the actual number of units,
97	 * and "hicount" will be the highest unit declared.  do_header()
98	 * must use this higher of these values.
99	 */
100	for (hicount = count = 0, dp = dtab; dp != 0; dp = dp->d_next) {
101		if (eq(dp->d_name, dev)) {
102			count =
103			    dp->d_count != UNKNOWN ? dp->d_count : 1;
104			break;
105		}
106	}
107	do_header(dev, count);
108}
109
110static void
111do_header(char *dev, int count)
112{
113	char *file, *name, *inw;
114	struct file_list *fl, *fl_head, *tflp;
115	FILE *inf, *outf;
116	int inc, oldcount;
117
118	file = toheader(dev);
119	name = tomacro(dev);
120	inf = fopen(file, "r");
121	oldcount = -1;
122	if (inf == 0) {
123		outf = fopen(file, "w");
124		if (outf == 0)
125			err(1, "%s", file);
126		fprintf(outf, "#define %s %d\n", name, count);
127		(void) fclose(outf);
128		return;
129	}
130	fl_head = NULL;
131	for (;;) {
132		char *cp;
133		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
134			break;
135		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
136			break;
137		inw = ns(inw);
138		cp = get_word(inf);
139		if (cp == 0 || cp == (char *)EOF)
140			break;
141		inc = atoi(cp);
142		if (eq(inw, name)) {
143			oldcount = inc;
144			inc = count;
145		}
146		cp = get_word(inf);
147		if (cp == (char *)EOF)
148			break;
149		fl = (struct file_list *) malloc(sizeof *fl);
150		bzero(fl, sizeof(*fl));
151		fl->f_fn = inw;		/* malloced */
152		fl->f_type = inc;
153		fl->f_next = fl_head;
154		fl_head = fl;
155	}
156	(void) fclose(inf);
157	if (count == oldcount) {
158		for (fl = fl_head; fl != NULL; fl = tflp) {
159			tflp = fl->f_next;
160			free(fl->f_fn);
161			free(fl);
162		}
163		return;
164	}
165	if (oldcount == -1) {
166		fl = (struct file_list *) malloc(sizeof *fl);
167		bzero(fl, sizeof(*fl));
168		fl->f_fn = ns(name);
169		fl->f_type = count;
170		fl->f_next = fl_head;
171		fl_head = fl;
172	}
173	outf = fopen(file, "w");
174	if (outf == 0)
175		err(1, "%s", file);
176	for (fl = fl_head; fl != NULL; fl = tflp) {
177		fprintf(outf,
178		    "#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
179		tflp = fl->f_next;
180		free(fl->f_fn);
181		free(fl);
182	}
183	(void) fclose(outf);
184}
185
186/*
187 * convert a dev name to a .h file name
188 */
189static char *
190toheader(char *dev)
191{
192	static char hbuf[80];
193
194	(void) strcpy(hbuf, path(dev));
195	(void) strcat(hbuf, ".h");
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