1 /* $NetBSD: soelim.c,v 1.10 2001/04/09 13:31:20 wiz 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 1.10 2001/04/09 13:31:20 wiz 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(struct path *, const char *); 80 static void initpath(struct path *); 81 static void addpath(struct path *, const char *); 82 static FILE *openpath(struct path *, const char *, const char *); 83 84 int main(int, char **); 85 86 87 static void 88 initpath(struct path *p) 89 { 90 p->list = NULL; 91 p->n = p->c = 0; 92 } 93 94 static void 95 addpath(struct path *p, const char *dir) 96 { 97 if (p->list == NULL || p->n <= p->c - 2) { 98 p->n += 10; 99 p->list = realloc(p->list, p->n * sizeof(p->list[0])); 100 if (p->list == NULL) 101 err(1, NULL); 102 } 103 104 if ((p->list[p->c++] = strdup(dir)) == NULL) 105 err(1, NULL); 106 107 p->list[p->c] = NULL; 108 } 109 110 static FILE * 111 openpath(struct path *p, const char *name, const char *parm) 112 { 113 char filename[MAXPATHLEN]; 114 const char *f; 115 FILE *fp; 116 size_t i; 117 118 if (*name == '/' || p->c == 0) 119 return fopen(name, parm); 120 121 for (i = 0; i < p->c; i++) { 122 if (p->list[i][0] == '\0') 123 f = name; 124 else { 125 (void)snprintf(filename, sizeof(filename), "%s/%s", 126 p->list[i], name); 127 f = filename; 128 } 129 if ((fp = fopen(f, parm)) != NULL) 130 return fp; 131 } 132 return NULL; 133 } 134 135 int 136 main(int argc, char *argv[]) 137 { 138 struct path p; 139 int c; 140 141 initpath(&p); 142 addpath(&p, "."); 143 144 while ((c = getopt(argc, argv, "I:")) != -1) 145 switch (c) { 146 case 'I': 147 addpath(&p, optarg); 148 break; 149 default: 150 (void)fprintf(stderr, 151 "Usage: %s [-I<dir>] [files...]\n", 152 getprogname()); 153 exit(1); 154 } 155 156 argc -= optind; 157 argv += optind; 158 159 if (argc == 0) { 160 (void)process(&p, STDIN_NAME); 161 exit(0); 162 } 163 do { 164 (void)process(&p, argv[0]); 165 argv++; 166 argc--; 167 } while (argc > 0); 168 exit(0); 169 } 170 171 int 172 process(struct path *p, const char *file) 173 { 174 char *cp; 175 int c; 176 char fname[BUFSIZ]; 177 FILE *soee; 178 int isfile; 179 180 if (!strcmp(file, STDIN_NAME)) { 181 soee = stdin; 182 } else { 183 soee = openpath(p, file, "r"); 184 if (soee == NULL) { 185 warn("Cannot open `%s'", file); 186 return(-1); 187 } 188 } 189 for (;;) { 190 c = getc(soee); 191 if (c == EOF) 192 break; 193 if (c != '.') 194 goto simple; 195 c = getc(soee); 196 if (c != 's') { 197 putchar('.'); 198 goto simple; 199 } 200 c = getc(soee); 201 if (c != 'o') { 202 printf(".s"); 203 goto simple; 204 } 205 do 206 c = getc(soee); 207 while (c == ' ' || c == '\t'); 208 cp = fname; 209 isfile = 0; 210 for (;;) { 211 switch (c) { 212 213 case ' ': 214 case '\t': 215 case '\n': 216 case EOF: 217 goto donename; 218 219 default: 220 *cp++ = c; 221 c = getc(soee); 222 isfile++; 223 continue; 224 } 225 } 226 donename: 227 if (cp == fname) { 228 printf(".so"); 229 goto simple; 230 } 231 *cp = 0; 232 if (process(p, fname) < 0) 233 if (isfile) 234 printf(".so %s\n", fname); 235 continue; 236 simple: 237 if (c == EOF) 238 break; 239 putchar(c); 240 if (c != '\n') { 241 c = getc(soee); 242 goto simple; 243 } 244 } 245 if (soee != stdin) { 246 fclose(soee); 247 } 248 return(0); 249 } 250