183 lines
3.8 KiB
C
183 lines
3.8 KiB
C
/* $Id: soelim.c,v 1.6 2021/09/19 18:14:24 schwarze Exp $ */
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/*
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* Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <ctype.h>
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#if HAVE_ERR
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#include <err.h>
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#endif
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if HAVE_STRINGLIST
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#include <stringlist.h>
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#else
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#include "compat_stringlist.h"
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#endif
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#include <unistd.h>
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#define C_OPTION 0x1
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static StringList *includes;
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static void
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usage(void)
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{
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fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n");
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exit(EXIT_FAILURE);
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}
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static FILE *
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soelim_fopen(const char *name)
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{
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FILE *f;
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char path[PATH_MAX];
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size_t i;
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if (strcmp(name, "-") == 0)
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return (stdin);
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if ((f = fopen(name, "r")) != NULL)
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return (f);
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if (*name == '/') {
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warn("can't open '%s'", name);
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return (NULL);
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}
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for (i = 0; i < includes->sl_cur; i++) {
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snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i],
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name);
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if ((f = fopen(path, "r")) != NULL)
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return (f);
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}
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warn("can't open '%s'", name);
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return (f);
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}
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static int
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soelim_file(FILE *f, int flag)
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{
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char *line = NULL;
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char *walk, *cp;
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size_t linecap = 0;
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ssize_t linelen;
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if (f == NULL)
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return (1);
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while ((linelen = getline(&line, &linecap, f)) > 0) {
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if (strncmp(line, ".so", 3) != 0) {
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printf("%s", line);
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continue;
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}
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walk = line + 3;
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if (!isspace((unsigned char)*walk) && (flag & C_OPTION) == 0) {
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printf("%s", line);
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continue;
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}
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while (isspace((unsigned char)*walk))
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walk++;
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cp = walk;
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while (*cp != '\0' && !isspace((unsigned char)*cp))
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cp++;
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*cp = 0;
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if (cp < line + linelen)
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cp++;
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if (*walk == '\0') {
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printf("%s", line);
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continue;
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}
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if (soelim_file(soelim_fopen(walk), flag) == 1) {
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free(line);
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return (1);
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}
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if (*cp != '\0')
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printf("%s", cp);
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}
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free(line);
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fclose(f);
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return (0);
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}
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int
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main(int argc, char **argv)
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{
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int ch, i;
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int ret = 0;
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int flags = 0;
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includes = sl_init();
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if (includes == NULL)
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err(EXIT_FAILURE, "sl_init()");
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while ((ch = getopt(argc, argv, "CrtvI:")) != -1) {
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switch (ch) {
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case 'C':
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flags |= C_OPTION;
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break;
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case 'r':
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case 'v':
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case 't':
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/* stub compatibility with groff's soelim */
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break;
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case 'I':
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sl_add(includes, optarg);
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break;
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default:
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sl_free(includes, 0);
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (argc == 0)
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ret = soelim_file(stdin, flags);
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for (i = 0; i < argc; i++)
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ret = soelim_file(soelim_fopen(argv[i]), flags);
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sl_free(includes, 0);
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return (ret);
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}
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