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 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 32 #define _WITH_GETLINE 33 #include <stdio.h> 34 #include <unistd.h> 35 #include <stdlib.h> 36 #include <stdbool.h> 37 #include <string.h> 38 #include <stringlist.h> 39 #include <err.h> 40 #include <ctype.h> 41 42 #define C_OPTION 0x1 43 44 static StringList *includes; 45 46 static void 47 usage(void) 48 { 49 50 fprintf(stderr, "usage: soelim [-Crtv] [-I dir] [files]\n"); 51 52 exit(EXIT_FAILURE); 53 } 54 55 static FILE * 56 soelim_fopen(const char *name) 57 { 58 FILE *f; 59 char path[MAXPATHLEN]; 60 size_t i; 61 62 if (strcmp(name, "-") == 0) 63 return (stdin); 64 65 if ((f = fopen(name, "r")) != NULL) 66 return (f); 67 68 if (*name == '/') { 69 warn("can't open '%s'", name); 70 return (NULL); 71 } 72 73 for (i = 0; i < includes->sl_cur; i++) { 74 snprintf(path, sizeof(path), "%s/%s", includes->sl_str[i], 75 name); 76 if ((f = fopen(path, "r")) != NULL) 77 return (f); 78 } 79 80 warn("can't open '%s'", name); 81 82 return (f); 83 } 84 85 static int 86 soelim_file(FILE *f, int flag) 87 { 88 char *line = NULL; 89 char *walk, *cp; 90 size_t linecap = 0; 91 ssize_t linelen; 92 93 if (f == NULL) 94 return (1); 95 96 while ((linelen = getline(&line, &linecap, f)) > 0) { 97 if (strncmp(line, ".so", 3) != 0) { 98 printf("%s", line); 99 continue; 100 } 101 102 walk = line + 3; 103 if (!isspace(*walk) && ((flag & C_OPTION) == 0)) { 104 printf("%s", line); 105 continue; 106 } 107 108 while (isspace(*walk)) 109 walk++; 110 111 cp = walk + strlen(walk) - 1; 112 while (cp > walk && isspace(*cp)) { 113 *cp = 0; 114 cp--; 115 } 116 117 if (*walk == '\0') { 118 printf("%s", line); 119 continue; 120 } 121 if (soelim_file(soelim_fopen(walk), flag) == 1) { 122 free(line); 123 return (1); 124 } 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