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/* $OpenBSD: mkheaders.c,v 1.22 2016/10/16 17:50:00 tb Exp $ */
/* $NetBSD: mkheaders.c,v 1.12 1997/02/02 21:12:34 thorpej Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratories.
*
* 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. 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.
*
* from: @(#)mkheaders.c 8.1 (Berkeley) 6/6/93
*/
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
static int emitcnt(struct nvlist *);
static int emitopt(struct nvlist *);
static int emitwarn(const char *, char *, FILE *);
static char *cntname(const char *);
/*
* Make headers containing counts, as needed.
*/
int
mkheaders(void)
{
struct files *fi;
struct nvlist *nv;
for (fi = allfiles; fi != NULL; fi = fi->fi_next) {
if (fi->fi_flags & FI_HIDDEN)
continue;
if (fi->fi_flags & (FI_NEEDSCOUNT | FI_NEEDSFLAG) &&
emitcnt(fi->fi_optf))
return (1);
}
for (nv = defoptions; nv != NULL; nv = nv->nv_next)
if (emitopt(nv))
return (1);
return (0);
}
static int
emitcnt(struct nvlist *head)
{
struct nvlist *nv;
FILE *fp;
int cnt;
char nam[100];
char buf[BUFSIZ];
char fname[BUFSIZ];
(void)snprintf(fname, sizeof fname, "%s.h", head->nv_name);
if ((fp = fopen(fname, "r")) == NULL)
goto writeit;
nv = head;
while (fgets(buf, sizeof(buf), fp) != NULL) {
if (nv == NULL)
goto writeit;
if (sscanf(buf, "#define %99s %d", nam, &cnt) != 2 ||
strcmp(nam, cntname(nv->nv_name)) != 0 ||
cnt != nv->nv_int)
goto writeit;
nv = nv->nv_next;
}
if (ferror(fp))
return (emitwarn("read", fname, fp));
(void)fclose(fp);
if (nv == NULL)
return (0);
writeit:
if ((fp = fopen(fname, "w")) == NULL)
return (emitwarn("writ", fname, NULL));
for (nv = head; nv != NULL; nv = nv->nv_next)
if (fprintf(fp, "#define\t%s\t%d\n",
cntname(nv->nv_name), nv->nv_int) < 0)
return (emitwarn("writ", fname, fp));
if (fclose(fp))
return (emitwarn("writ", fname, NULL));
return (0);
}
static int
emitopt(struct nvlist *nv)
{
struct nvlist *option;
char new_contents[BUFSIZ], buf[BUFSIZ];
char fname[BUFSIZ];
int totlen, nlines;
FILE *fp;
/*
* Generate the new contents of the file.
*/
if ((option = ht_lookup(opttab, nv->nv_str)) == NULL)
totlen = snprintf(new_contents, sizeof new_contents,
"/* option `%s' not defined */\n",
nv->nv_str);
else {
if (option->nv_str != NULL)
totlen = snprintf(new_contents, sizeof new_contents,
"#define\t%s\t%s\n",
option->nv_name, option->nv_str);
else
totlen = snprintf(new_contents, sizeof new_contents,
"#define\t%s\n",
option->nv_name);
}
if (totlen < 0 || totlen >= sizeof new_contents) {
warnx("string too long");
return (1);
}
/*
* Compare the new file to the old.
*/
snprintf(fname, sizeof fname, "opt_%s.h", nv->nv_name);
if ((fp = fopen(fname, "r")) == NULL)
goto writeit;
nlines = 0;
while (fgets(buf, sizeof(buf), fp) != NULL) {
if (++nlines != 1 ||
strcmp(buf, new_contents) != 0)
goto writeit;
}
if (ferror(fp))
return (emitwarn("read", fname, fp));
(void)fclose(fp);
if (nlines == 1)
return (0);
writeit:
/*
* They're different, or the file doesn't exist.
*/
if ((fp = fopen(fname, "w")) == NULL)
return (emitwarn("writ", fname, NULL));
if (fprintf(fp, "%s", new_contents) < 0)
return (emitwarn("writ", fname, fp));
if (fclose(fp))
return (emitwarn("writ", fname, fp));
return (0);
}
static int
emitwarn(const char *what, char *fname, FILE *fp)
{
warn("error %sing %s", what, fname);
if (fp)
(void)fclose(fp);
return (1);
}
static char *
cntname(const char *src)
{
char *dst, c;
static char buf[100];
dst = buf;
*dst++ = 'N';
while ((c = *src++) != 0)
*dst++ = islower((unsigned char)c) ?
toupper((unsigned char)c) : c;
*dst = 0;
return (buf);
}
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