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/* $NetBSD: soelim.c,v 1.14 2008/07/21 14:19:26 lukem Exp $ */
/*
* Copyright (c) 1980, 1993
* 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)soelim.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: soelim.c,v 1.14 2008/07/21 14:19:26 lukem Exp $");
#endif /* not lint */
/*
* soelim - a filter to process n/troff input eliminating .so's
*
* Author: Bill Joy UCB July 8, 1977
*
* This program eliminates .so's from a n/troff input stream.
* It can be used to prepare safe input for submission to the
* phototypesetter since the software supporting the operator
* doesn't let him do chdir.
*
* This is a kludge and the operator should be given the
* ability to do chdir.
*
* This program is more generally useful, it turns out, because
* the program tbl doesn't understand ".so" directives.
*/
#include <sys/param.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define STDIN_NAME "-"
struct path {
char **list;
size_t n, c;
};
static int process(struct path *, const char *);
static void initpath(struct path *);
static void addpath(struct path *, const char *);
static FILE *openpath(struct path *, const char *, const char *);
int main(int, char **);
static void
initpath(struct path *p)
{
p->list = NULL;
p->n = p->c = 0;
}
static void
addpath(struct path *p, const char *dir)
{
char **n;
if (p->list == NULL || p->n <= p->c - 2) {
n = realloc(p->list, (p->n + 10) * sizeof(p->list[0]));
if (n == NULL)
err(1, NULL);
p->list = n;
p->n += 10;
}
if ((p->list[p->c++] = strdup(dir)) == NULL)
err(1, NULL);
p->list[p->c] = NULL;
}
static FILE *
openpath(struct path *p, const char *name, const char *parm)
{
char filename[MAXPATHLEN];
const char *f;
FILE *fp;
size_t i;
if (*name == '/' || p->c == 0)
return fopen(name, parm);
for (i = 0; i < p->c; i++) {
if (p->list[i][0] == '\0')
f = name;
else {
(void)snprintf(filename, sizeof(filename), "%s/%s",
p->list[i], name);
f = filename;
}
if ((fp = fopen(f, parm)) != NULL)
return fp;
}
return NULL;
}
int
main(int argc, char *argv[])
{
struct path p;
int c;
initpath(&p);
addpath(&p, ".");
while ((c = getopt(argc, argv, "I:")) != -1)
switch (c) {
case 'I':
addpath(&p, optarg);
break;
default:
(void)fprintf(stderr,
"usage: %s [-I<dir>] [files...]\n",
getprogname());
exit(1);
}
argc -= optind;
argv += optind;
if (argc == 0) {
(void)process(&p, STDIN_NAME);
exit(0);
}
do {
(void)process(&p, argv[0]);
argv++;
argc--;
} while (argc > 0);
exit(0);
}
int
process(struct path *p, const char *file)
{
char *cp;
int c;
char fname[BUFSIZ];
FILE *soee;
int isfile;
if (!strcmp(file, STDIN_NAME)) {
soee = stdin;
} else {
soee = openpath(p, file, "r");
if (soee == NULL) {
warn("Cannot open `%s'", file);
return(-1);
}
}
for (;;) {
c = getc(soee);
if (c == EOF)
break;
if (c != '.')
goto simple;
c = getc(soee);
if (c != 's') {
putchar('.');
goto simple;
}
c = getc(soee);
if (c != 'o') {
printf(".s");
goto simple;
}
do
c = getc(soee);
while (c == ' ' || c == '\t');
cp = fname;
isfile = 0;
for (;;) {
switch (c) {
case ' ':
case '\t':
case '\n':
case EOF:
goto donename;
default:
*cp++ = c;
c = getc(soee);
isfile++;
continue;
}
}
donename:
if (cp == fname) {
printf(".so");
goto simple;
}
*cp = 0;
if (process(p, fname) < 0)
if (isfile)
printf(".so %s\n", fname);
continue;
simple:
if (c == EOF)
break;
putchar(c);
if (c != '\n') {
c = getc(soee);
goto simple;
}
}
if (soee != stdin) {
fclose(soee);
}
return(0);
}
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