1 /* $NetBSD: soelim.c,v 1.5 1997/12/21 17:04:16 christos 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 1.5 1997/12/21 17:04:16 christos 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 <stdio.h> 67 #include <string.h> 68 #include <stdlib.h> 69 #include <err.h> 70 71 #define STDIN_NAME "-" 72 73 struct path { 74 char **list; 75 size_t n, c; 76 }; 77 78 static int process __P((struct path *, char *)); 79 static void initpath __P((struct path *)); 80 static void addpath __P((struct path *, const char *)); 81 static FILE *openpath __P((struct path *, const char *, const char *)); 82 83 int main __P((int, char **)); 84 85 86 static void 87 initpath(p) 88 struct path *p; 89 { 90 p->list = NULL; 91 p->n = p->c = 0; 92 } 93 94 static void 95 addpath(p, dir) 96 struct path *p; 97 const char *dir; 98 { 99 if (p->list == NULL || p->n <= p->c - 2) { 100 p->n += 10; 101 p->list = realloc(p->list, p->n * sizeof(p->list[0])); 102 if (p->list == NULL) 103 err(1, "%s", ""); 104 } 105 106 if ((p->list[p->c++] = strdup(dir)) == NULL) 107 err(1, "%s", ""); 108 109 p->list[p->c] = NULL; 110 } 111 112 static FILE * 113 openpath(p, name, parm) 114 struct path *p; 115 const char *name; 116 const char *parm; 117 { 118 char filename[MAXPATHLEN]; 119 const char *f; 120 FILE *fp; 121 size_t i; 122 123 if (*name == '/' || p->c == 0) 124 return fopen(name, parm); 125 126 for (i = 0; i < p->c; i++) { 127 if (p->list[i][0] == '\0') 128 f = name; 129 else { 130 (void)snprintf(filename, sizeof(filename), "%s/%s", 131 p->list[i], name); 132 f = filename; 133 } 134 if ((fp = fopen(f, parm)) != NULL) 135 return fp; 136 } 137 return NULL; 138 } 139 140 int 141 main(argc, argv) 142 int argc; 143 char *argv[]; 144 { 145 extern char *__progname; 146 struct path p; 147 int c; 148 149 initpath(&p); 150 addpath(&p, "."); 151 152 while ((c = getopt(argc, argv, "I:")) != -1) 153 switch (c) { 154 case 'I': 155 addpath(&p, optarg); 156 break; 157 default: 158 (void)fprintf(stderr, 159 "Usage: %s [-I<dir>] [files...]\n", __progname); 160 exit(1); 161 } 162 163 argc -= optind; 164 argv += optind; 165 166 if (argc == 0) { 167 (void)process(&p, STDIN_NAME); 168 exit(0); 169 } 170 do { 171 (void)process(&p, argv[0]); 172 argv++; 173 argc--; 174 } while (argc > 0); 175 exit(0); 176 } 177 178 int 179 process(p, file) 180 struct path *p; 181 char *file; 182 { 183 char *cp; 184 int c; 185 char fname[BUFSIZ]; 186 FILE *soee; 187 int isfile; 188 189 if (!strcmp(file, STDIN_NAME)) { 190 soee = stdin; 191 } else { 192 soee = openpath(p, file, "r"); 193 if (soee == NULL) { 194 warn("Cannot open `%s'", file); 195 return(-1); 196 } 197 } 198 for (;;) { 199 c = getc(soee); 200 if (c == EOF) 201 break; 202 if (c != '.') 203 goto simple; 204 c = getc(soee); 205 if (c != 's') { 206 putchar('.'); 207 goto simple; 208 } 209 c = getc(soee); 210 if (c != 'o') { 211 printf(".s"); 212 goto simple; 213 } 214 do 215 c = getc(soee); 216 while (c == ' ' || c == '\t'); 217 cp = fname; 218 isfile = 0; 219 for (;;) { 220 switch (c) { 221 222 case ' ': 223 case '\t': 224 case '\n': 225 case EOF: 226 goto donename; 227 228 default: 229 *cp++ = c; 230 c = getc(soee); 231 isfile++; 232 continue; 233 } 234 } 235 donename: 236 if (cp == fname) { 237 printf(".so"); 238 goto simple; 239 } 240 *cp = 0; 241 if (process(p, fname) < 0) 242 if (isfile) 243 printf(".so %s\n", fname); 244 continue; 245 simple: 246 if (c == EOF) 247 break; 248 putchar(c); 249 if (c != '\n') { 250 c = getc(soee); 251 goto simple; 252 } 253 } 254 if (soee != stdin) { 255 fclose(soee); 256 } 257 return(0); 258 } 259