1 /*-
2 * Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org>
3 * 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 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.bin/soelim/soelim.c 303526 2016-07-30 01:07:47Z bapt $
27 */
28
29 #include <sys/types.h>
30
31 #include <ctype.h>
32 #include <err.h>
33 #include <limits.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <stringlist.h>
38 #include <unistd.h>
39
40 #define C_OPTION 0x1
41
42 static StringList *includes;
43
44 static void
usage(void)45 usage(void)
46 {
47
48 fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n");
49
50 exit(EXIT_FAILURE);
51 }
52
53 static FILE *
soelim_fopen(const char * name)54 soelim_fopen(const char *name)
55 {
56 FILE *f;
57 char path[PATH_MAX];
58 size_t i;
59
60 if (strcmp(name, "-") == 0)
61 return (stdin);
62
63 if ((f = fopen(name, "r")) != NULL)
64 return (f);
65
66 if (*name == '/') {
67 warn("can't open '%s'", name);
68 return (NULL);
69 }
70
71 for (i = 0; i < includes->sl_cur; i++) {
72 snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i],
73 name);
74 if ((f = fopen(path, "r")) != NULL)
75 return (f);
76 }
77
78 warn("can't open '%s'", name);
79
80 return (f);
81 }
82
83 static int
soelim_file(FILE * f,int flag)84 soelim_file(FILE *f, int flag)
85 {
86 char *line = NULL;
87 char *walk, *cp;
88 size_t linecap = 0;
89 ssize_t linelen;
90
91 if (f == NULL)
92 return (1);
93
94 while ((linelen = getline(&line, &linecap, f)) > 0) {
95 if (strncmp(line, ".so", 3) != 0) {
96 printf("%s", line);
97 continue;
98 }
99
100 walk = line + 3;
101 if (!isspace(*walk) && ((flag & C_OPTION) == 0)) {
102 printf("%s", line);
103 continue;
104 }
105
106 while (isspace(*walk))
107 walk++;
108
109 cp = walk;
110 while (*cp != '\0' && !isspace(*cp))
111 cp++;
112 *cp = 0;
113 if (cp < line + linelen)
114 cp++;
115
116 if (*walk == '\0') {
117 printf("%s", line);
118 continue;
119 }
120 if (soelim_file(soelim_fopen(walk), flag) == 1) {
121 free(line);
122 return (1);
123 }
124 if (*cp != '\0')
125 printf("%s", cp);
126 }
127
128 free(line);
129 fclose(f);
130
131 return (0);
132 }
133
134 int
main(int argc,char ** argv)135 main(int argc, char **argv)
136 {
137 int ch, i;
138 int ret = 0;
139 int flags = 0;
140
141 includes = sl_init();
142 if (includes == NULL)
143 err(EXIT_FAILURE, "sl_init()");
144
145 while ((ch = getopt(argc, argv, "CrtvI:")) != -1) {
146 switch (ch) {
147 case 'C':
148 flags |= C_OPTION;
149 break;
150 case 'r':
151 case 'v':
152 case 't':
153 /* stub compatibility with groff's soelim */
154 break;
155 case 'I':
156 sl_add(includes, optarg);
157 break;
158 default:
159 sl_free(includes, 0);
160 usage();
161 }
162 }
163
164 argc -= optind;
165 argv += optind;
166
167 if (argc == 0)
168 ret = soelim_file(stdin, flags);
169
170 for (i = 0; i < argc; i++)
171 ret = soelim_file(soelim_fopen(argv[i]), flags);
172
173 sl_free(includes, 0);
174
175 return (ret);
176 }
177