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
27 #include <sys/types.h>
28
29 #include <ctype.h>
30 #include <err.h>
31 #include <limits.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <stringlist.h>
36 #include <unistd.h>
37
38 #define C_OPTION 0x1
39
40 static StringList *includes;
41
42 static void
usage(void)43 usage(void)
44 {
45
46 fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n");
47
48 exit(EXIT_FAILURE);
49 }
50
51 static FILE *
soelim_fopen(const char * name)52 soelim_fopen(const char *name)
53 {
54 FILE *f;
55 char path[PATH_MAX];
56 size_t i;
57
58 if (strcmp(name, "-") == 0)
59 return (stdin);
60
61 if ((f = fopen(name, "r")) != NULL)
62 return (f);
63
64 if (*name == '/') {
65 warn("can't open '%s'", name);
66 return (NULL);
67 }
68
69 for (i = 0; i < includes->sl_cur; i++) {
70 snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i],
71 name);
72 if ((f = fopen(path, "r")) != NULL)
73 return (f);
74 }
75
76 warn("can't open '%s'", name);
77
78 return (f);
79 }
80
81 static int
soelim_file(FILE * f,int flag)82 soelim_file(FILE *f, int flag)
83 {
84 char *line = NULL;
85 char *walk, *cp;
86 size_t linecap = 0;
87 ssize_t linelen;
88
89 if (f == NULL)
90 return (1);
91
92 while ((linelen = getline(&line, &linecap, f)) > 0) {
93 if (strncmp(line, ".so", 3) != 0) {
94 printf("%s", line);
95 continue;
96 }
97
98 walk = line + 3;
99 if (!isspace(*walk) && ((flag & C_OPTION) == 0)) {
100 printf("%s", line);
101 continue;
102 }
103
104 while (isspace(*walk))
105 walk++;
106
107 cp = walk;
108 while (*cp != '\0' && !isspace(*cp))
109 cp++;
110 *cp = 0;
111 if (cp < line + linelen)
112 cp++;
113
114 if (*walk == '\0') {
115 printf("%s", line);
116 continue;
117 }
118 if (soelim_file(soelim_fopen(walk), flag) == 1) {
119 free(line);
120 return (1);
121 }
122 if (*cp != '\0')
123 printf("%s", cp);
124 }
125
126 free(line);
127 fclose(f);
128
129 return (0);
130 }
131
132 int
main(int argc,char ** argv)133 main(int argc, char **argv)
134 {
135 int ch, i;
136 int ret = 0;
137 int flags = 0;
138
139 includes = sl_init();
140 if (includes == NULL)
141 err(EXIT_FAILURE, "sl_init()");
142
143 while ((ch = getopt(argc, argv, "CrtvI:")) != -1) {
144 switch (ch) {
145 case 'C':
146 flags |= C_OPTION;
147 break;
148 case 'r':
149 case 'v':
150 case 't':
151 /* stub compatibility with groff's soelim */
152 break;
153 case 'I':
154 sl_add(includes, optarg);
155 break;
156 default:
157 sl_free(includes, 0);
158 usage();
159 }
160 }
161
162 argc -= optind;
163 argv += optind;
164
165 if (argc == 0)
166 ret = soelim_file(stdin, flags);
167
168 for (i = 0; i < argc; i++)
169 ret = soelim_file(soelim_fopen(argv[i]), flags);
170
171 sl_free(includes, 0);
172
173 return (ret);
174 }
175