1 /* $Id: soelim.c,v 1.6 2021/09/19 18:14:24 schwarze Exp $ */
2 /*
3 * Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer
11 * in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27 #include "config.h"
28
29 #include <sys/types.h>
30
31 #include <ctype.h>
32 #if HAVE_ERR
33 #include <err.h>
34 #endif
35 #include <limits.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #if HAVE_STRINGLIST
40 #include <stringlist.h>
41 #else
42 #include "compat_stringlist.h"
43 #endif
44 #include <unistd.h>
45
46 #define C_OPTION 0x1
47
48 static StringList *includes;
49
50 static void
usage(void)51 usage(void)
52 {
53
54 fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n");
55
56 exit(EXIT_FAILURE);
57 }
58
59 static FILE *
soelim_fopen(const char * name)60 soelim_fopen(const char *name)
61 {
62 FILE *f;
63 char path[PATH_MAX];
64 size_t i;
65
66 if (strcmp(name, "-") == 0)
67 return (stdin);
68
69 if ((f = fopen(name, "r")) != NULL)
70 return (f);
71
72 if (*name == '/') {
73 warn("can't open '%s'", name);
74 return (NULL);
75 }
76
77 for (i = 0; i < includes->sl_cur; i++) {
78 snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i],
79 name);
80 if ((f = fopen(path, "r")) != NULL)
81 return (f);
82 }
83
84 warn("can't open '%s'", name);
85
86 return (f);
87 }
88
89 static int
soelim_file(FILE * f,int flag)90 soelim_file(FILE *f, int flag)
91 {
92 char *line = NULL;
93 char *walk, *cp;
94 size_t linecap = 0;
95 ssize_t linelen;
96
97 if (f == NULL)
98 return (1);
99
100 while ((linelen = getline(&line, &linecap, f)) > 0) {
101 if (strncmp(line, ".so", 3) != 0) {
102 printf("%s", line);
103 continue;
104 }
105
106 walk = line + 3;
107 if (!isspace((unsigned char)*walk) && (flag & C_OPTION) == 0) {
108 printf("%s", line);
109 continue;
110 }
111
112 while (isspace((unsigned char)*walk))
113 walk++;
114
115 cp = walk;
116 while (*cp != '\0' && !isspace((unsigned char)*cp))
117 cp++;
118 *cp = 0;
119 if (cp < line + linelen)
120 cp++;
121
122 if (*walk == '\0') {
123 printf("%s", line);
124 continue;
125 }
126 if (soelim_file(soelim_fopen(walk), flag) == 1) {
127 free(line);
128 return (1);
129 }
130 if (*cp != '\0')
131 printf("%s", cp);
132 }
133
134 free(line);
135 fclose(f);
136
137 return (0);
138 }
139
140 int
main(int argc,char ** argv)141 main(int argc, char **argv)
142 {
143 int ch, i;
144 int ret = 0;
145 int flags = 0;
146
147 includes = sl_init();
148 if (includes == NULL)
149 err(EXIT_FAILURE, "sl_init()");
150
151 while ((ch = getopt(argc, argv, "CrtvI:")) != -1) {
152 switch (ch) {
153 case 'C':
154 flags |= C_OPTION;
155 break;
156 case 'r':
157 case 'v':
158 case 't':
159 /* stub compatibility with groff's soelim */
160 break;
161 case 'I':
162 sl_add(includes, optarg);
163 break;
164 default:
165 sl_free(includes, 0);
166 usage();
167 }
168 }
169
170 argc -= optind;
171 argv += optind;
172
173 if (argc == 0)
174 ret = soelim_file(stdin, flags);
175
176 for (i = 0; i < argc; i++)
177 ret = soelim_file(soelim_fopen(argv[i]), flags);
178
179 sl_free(includes, 0);
180
181 return (ret);
182 }
183