1 /* $Id: soelim.c,v 1.6 2021/09/19 18:14:24 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2014 Baptiste Daroussin <bapt@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer 11 * in this position and unchanged. 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #include "config.h" 28 29 #include <sys/types.h> 30 31 #include <ctype.h> 32 #if HAVE_ERR 33 #include <err.h> 34 #endif 35 #include <limits.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #if HAVE_STRINGLIST 40 #include <stringlist.h> 41 #else 42 #include "compat_stringlist.h" 43 #endif 44 #include <unistd.h> 45 46 #define C_OPTION 0x1 47 48 static StringList *includes; 49 50 static void 51 usage(void) 52 { 53 54 fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n"); 55 56 exit(EXIT_FAILURE); 57 } 58 59 static FILE * 60 soelim_fopen(const char *name) 61 { 62 FILE *f; 63 char path[PATH_MAX]; 64 size_t i; 65 66 if (strcmp(name, "-") == 0) 67 return (stdin); 68 69 if ((f = fopen(name, "r")) != NULL) 70 return (f); 71 72 if (*name == '/') { 73 warn("can't open '%s'", name); 74 return (NULL); 75 } 76 77 for (i = 0; i < includes->sl_cur; i++) { 78 snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i], 79 name); 80 if ((f = fopen(path, "r")) != NULL) 81 return (f); 82 } 83 84 warn("can't open '%s'", name); 85 86 return (f); 87 } 88 89 static int 90 soelim_file(FILE *f, int flag) 91 { 92 char *line = NULL; 93 char *walk, *cp; 94 size_t linecap = 0; 95 ssize_t linelen; 96 97 if (f == NULL) 98 return (1); 99 100 while ((linelen = getline(&line, &linecap, f)) > 0) { 101 if (strncmp(line, ".so", 3) != 0) { 102 printf("%s", line); 103 continue; 104 } 105 106 walk = line + 3; 107 if (!isspace((unsigned char)*walk) && (flag & C_OPTION) == 0) { 108 printf("%s", line); 109 continue; 110 } 111 112 while (isspace((unsigned char)*walk)) 113 walk++; 114 115 cp = walk; 116 while (*cp != '\0' && !isspace((unsigned char)*cp)) 117 cp++; 118 *cp = 0; 119 if (cp < line + linelen) 120 cp++; 121 122 if (*walk == '\0') { 123 printf("%s", line); 124 continue; 125 } 126 if (soelim_file(soelim_fopen(walk), flag) == 1) { 127 free(line); 128 return (1); 129 } 130 if (*cp != '\0') 131 printf("%s", cp); 132 } 133 134 free(line); 135 fclose(f); 136 137 return (0); 138 } 139 140 int 141 main(int argc, char **argv) 142 { 143 int ch, i; 144 int ret = 0; 145 int flags = 0; 146 147 includes = sl_init(); 148 if (includes == NULL) 149 err(EXIT_FAILURE, "sl_init()"); 150 151 while ((ch = getopt(argc, argv, "CrtvI:")) != -1) { 152 switch (ch) { 153 case 'C': 154 flags |= C_OPTION; 155 break; 156 case 'r': 157 case 'v': 158 case 't': 159 /* stub compatibility with groff's soelim */ 160 break; 161 case 'I': 162 sl_add(includes, optarg); 163 break; 164 default: 165 sl_free(includes, 0); 166 usage(); 167 } 168 } 169 170 argc -= optind; 171 argv += optind; 172 173 if (argc == 0) 174 ret = soelim_file(stdin, flags); 175 176 for (i = 0; i < argc; i++) 177 ret = soelim_file(soelim_fopen(argv[i]), flags); 178 179 sl_free(includes, 0); 180 181 return (ret); 182 } 183