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/cdefs.h> 28 #include <sys/types.h> 29 30 #include <ctype.h> 31 #include <err.h> 32 #include <limits.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <stringlist.h> 37 #include <unistd.h> 38 39 #define C_OPTION 0x1 40 41 static StringList *includes; 42 43 static void 44 usage(void) 45 { 46 47 fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n"); 48 49 exit(EXIT_FAILURE); 50 } 51 52 static FILE * 53 soelim_fopen(const char *name) 54 { 55 FILE *f; 56 char path[PATH_MAX]; 57 size_t i; 58 59 if (strcmp(name, "-") == 0) 60 return (stdin); 61 62 if ((f = fopen(name, "r")) != NULL) 63 return (f); 64 65 if (*name == '/') { 66 warn("can't open '%s'", name); 67 return (NULL); 68 } 69 70 for (i = 0; i < includes->sl_cur; i++) { 71 snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i], 72 name); 73 if ((f = fopen(path, "r")) != NULL) 74 return (f); 75 } 76 77 warn("can't open '%s'", name); 78 79 return (f); 80 } 81 82 static int 83 soelim_file(FILE *f, int flag) 84 { 85 char *line = NULL; 86 char *walk, *cp; 87 size_t linecap = 0; 88 ssize_t linelen; 89 90 if (f == NULL) 91 return (1); 92 93 while ((linelen = getline(&line, &linecap, f)) > 0) { 94 if (strncmp(line, ".so", 3) != 0) { 95 printf("%s", line); 96 continue; 97 } 98 99 walk = line + 3; 100 if (!isspace(*walk) && ((flag & C_OPTION) == 0)) { 101 printf("%s", line); 102 continue; 103 } 104 105 while (isspace(*walk)) 106 walk++; 107 108 cp = walk; 109 while (*cp != '\0' && !isspace(*cp)) 110 cp++; 111 *cp = 0; 112 if (cp < line + linelen) 113 cp++; 114 115 if (*walk == '\0') { 116 printf("%s", line); 117 continue; 118 } 119 if (soelim_file(soelim_fopen(walk), flag) == 1) { 120 free(line); 121 return (1); 122 } 123 if (*cp != '\0') 124 printf("%s", cp); 125 } 126 127 free(line); 128 fclose(f); 129 130 return (0); 131 } 132 133 int 134 main(int argc, char **argv) 135 { 136 int ch, i; 137 int ret = 0; 138 int flags = 0; 139 140 includes = sl_init(); 141 if (includes == NULL) 142 err(EXIT_FAILURE, "sl_init()"); 143 144 while ((ch = getopt(argc, argv, "CrtvI:")) != -1) { 145 switch (ch) { 146 case 'C': 147 flags |= C_OPTION; 148 break; 149 case 'r': 150 case 'v': 151 case 't': 152 /* stub compatibility with groff's soelim */ 153 break; 154 case 'I': 155 sl_add(includes, optarg); 156 break; 157 default: 158 sl_free(includes, 0); 159 usage(); 160 } 161 } 162 163 argc -= optind; 164 argv += optind; 165 166 if (argc == 0) 167 ret = soelim_file(stdin, flags); 168 169 for (i = 0; i < argc; i++) 170 ret = soelim_file(soelim_fopen(argv[i]), flags); 171 172 sl_free(includes, 0); 173 174 return (ret); 175 } 176