1 /* $NetBSD: soelim.c,v 1.7 1999/11/09 15:06:36 drochner Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)soelim.c 8.1 (Berkeley) 6/6/93"; 45 #endif 46 __RCSID("$NetBSD: soelim.c,v 1.7 1999/11/09 15:06:36 drochner Exp $"); 47 #endif /* not lint */ 48 49 /* 50 * soelim - a filter to process n/troff input eliminating .so's 51 * 52 * Author: Bill Joy UCB July 8, 1977 53 * 54 * This program eliminates .so's from a n/troff input stream. 55 * It can be used to prepare safe input for submission to the 56 * phototypesetter since the software supporting the operator 57 * doesn't let him do chdir. 58 * 59 * This is a kludge and the operator should be given the 60 * ability to do chdir. 61 * 62 * This program is more generally useful, it turns out, because 63 * the program tbl doesn't understand ".so" directives. 64 */ 65 #include <sys/param.h> 66 #include <err.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <unistd.h> 71 72 #define STDIN_NAME "-" 73 74 struct path { 75 char **list; 76 size_t n, c; 77 }; 78 79 static int process __P((struct path *, char *)); 80 static void initpath __P((struct path *)); 81 static void addpath __P((struct path *, const char *)); 82 static FILE *openpath __P((struct path *, const char *, const char *)); 83 84 int main __P((int, char **)); 85 86 87 static void 88 initpath(p) 89 struct path *p; 90 { 91 p->list = NULL; 92 p->n = p->c = 0; 93 } 94 95 static void 96 addpath(p, dir) 97 struct path *p; 98 const char *dir; 99 { 100 if (p->list == NULL || p->n <= p->c - 2) { 101 p->n += 10; 102 p->list = realloc(p->list, p->n * sizeof(p->list[0])); 103 if (p->list == NULL) 104 err(1, NULL); 105 } 106 107 if ((p->list[p->c++] = strdup(dir)) == NULL) 108 err(1, NULL); 109 110 p->list[p->c] = NULL; 111 } 112 113 static FILE * 114 openpath(p, name, parm) 115 struct path *p; 116 const char *name; 117 const char *parm; 118 { 119 char filename[MAXPATHLEN]; 120 const char *f; 121 FILE *fp; 122 size_t i; 123 124 if (*name == '/' || p->c == 0) 125 return fopen(name, parm); 126 127 for (i = 0; i < p->c; i++) { 128 if (p->list[i][0] == '\0') 129 f = name; 130 else { 131 (void)snprintf(filename, sizeof(filename), "%s/%s", 132 p->list[i], name); 133 f = filename; 134 } 135 if ((fp = fopen(f, parm)) != NULL) 136 return fp; 137 } 138 return NULL; 139 } 140 141 int 142 main(argc, argv) 143 int argc; 144 char *argv[]; 145 { 146 extern char *__progname; 147 struct path p; 148 int c; 149 150 initpath(&p); 151 addpath(&p, "."); 152 153 while ((c = getopt(argc, argv, "I:")) != -1) 154 switch (c) { 155 case 'I': 156 addpath(&p, optarg); 157 break; 158 default: 159 (void)fprintf(stderr, 160 "Usage: %s [-I<dir>] [files...]\n", __progname); 161 exit(1); 162 } 163 164 argc -= optind; 165 argv += optind; 166 167 if (argc == 0) { 168 (void)process(&p, STDIN_NAME); 169 exit(0); 170 } 171 do { 172 (void)process(&p, argv[0]); 173 argv++; 174 argc--; 175 } while (argc > 0); 176 exit(0); 177 } 178 179 int 180 process(p, file) 181 struct path *p; 182 char *file; 183 { 184 char *cp; 185 int c; 186 char fname[BUFSIZ]; 187 FILE *soee; 188 int isfile; 189 190 if (!strcmp(file, STDIN_NAME)) { 191 soee = stdin; 192 } else { 193 soee = openpath(p, file, "r"); 194 if (soee == NULL) { 195 warn("Cannot open `%s'", file); 196 return(-1); 197 } 198 } 199 for (;;) { 200 c = getc(soee); 201 if (c == EOF) 202 break; 203 if (c != '.') 204 goto simple; 205 c = getc(soee); 206 if (c != 's') { 207 putchar('.'); 208 goto simple; 209 } 210 c = getc(soee); 211 if (c != 'o') { 212 printf(".s"); 213 goto simple; 214 } 215 do 216 c = getc(soee); 217 while (c == ' ' || c == '\t'); 218 cp = fname; 219 isfile = 0; 220 for (;;) { 221 switch (c) { 222 223 case ' ': 224 case '\t': 225 case '\n': 226 case EOF: 227 goto donename; 228 229 default: 230 *cp++ = c; 231 c = getc(soee); 232 isfile++; 233 continue; 234 } 235 } 236 donename: 237 if (cp == fname) { 238 printf(".so"); 239 goto simple; 240 } 241 *cp = 0; 242 if (process(p, fname) < 0) 243 if (isfile) 244 printf(".so %s\n", fname); 245 continue; 246 simple: 247 if (c == EOF) 248 break; 249 putchar(c); 250 if (c != '\n') { 251 c = getc(soee); 252 goto simple; 253 } 254 } 255 if (soee != stdin) { 256 fclose(soee); 257 } 258 return(0); 259 } 260