1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 30 #include <ctype.h> 31 #include <limits.h> 32 #include <locale.h> 33 #include <nl_types.h> 34 #include <stdlib.h> 35 #include <stdio.h> 36 #include <string.h> 37 #include <unistd.h> 38 #include <errno.h> 39 40 #define FF '\f' 41 #define NL '\n' 42 #define NUL '\0' 43 44 static void usage(void); 45 static void disp_file(FILE *f, char *filename); 46 static FILE *get_next_file(int, char *, char *[], int); 47 static void finish(int need_a_newline); 48 49 int estatus = 0; /* exit status */ 50 int i; /* argv index */ 51 52 int 53 main(int argc, char *argv[]) 54 { 55 int c; 56 int form_feeds = 0; 57 int need_a_newline = 0; 58 char *filename = NULL; 59 FILE *f; 60 61 (void) setlocale(LC_ALL, ""); 62 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 63 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it were not */ 64 #endif 65 66 (void) textdomain(TEXT_DOMAIN); 67 68 while ((c = getopt(argc, argv, "f")) != EOF) { 69 switch (c) { 70 case 'f': 71 form_feeds = 1; 72 break; 73 74 case '?': 75 usage(); 76 } 77 } 78 79 i = optind; 80 if (argc <= i) { 81 filename = NULL; 82 f = stdin; 83 } else { 84 f = get_next_file(need_a_newline, filename, argv, argc); 85 } 86 87 need_a_newline = 0; 88 for (;;) { 89 /* interpret the first character in the line */ 90 91 c = getc(f); 92 switch (c) { 93 case EOF: 94 disp_file(f, filename); 95 96 if (i >= argc) 97 finish(need_a_newline); 98 99 f = get_next_file(need_a_newline, filename, argv, argc); 100 101 if (need_a_newline) { 102 (void) putchar(NL); 103 need_a_newline = 0; 104 } 105 106 if (form_feeds) 107 (void) putchar(FF); 108 109 continue; 110 111 case NL: 112 if (need_a_newline) 113 (void) putchar(NL); 114 need_a_newline = 1; 115 continue; 116 117 case '+': 118 if (need_a_newline) 119 (void) putchar('\r'); 120 break; 121 122 case '0': 123 if (need_a_newline) 124 (void) putchar(NL); 125 (void) putchar(NL); 126 break; 127 128 case '1': 129 if (need_a_newline) 130 (void) putchar(NL); 131 (void) putchar(FF); 132 break; 133 134 case ' ': 135 default: 136 if (need_a_newline) 137 (void) putchar(NL); 138 break; 139 } 140 141 need_a_newline = 0; 142 143 for (;;) { 144 c = getc(f); 145 if (c == NL) { 146 need_a_newline = 1; 147 break; 148 } else if (c == EOF) { 149 disp_file(f, filename); 150 151 if (i >= argc) 152 finish(need_a_newline); 153 154 f = get_next_file(need_a_newline, filename, 155 argv, argc); 156 157 if (form_feeds) { 158 (void) putchar(NL); 159 (void) putchar(FF); 160 need_a_newline = 0; 161 break; 162 } 163 } else { 164 (void) putchar(c); 165 } 166 } 167 } 168 /* NOTREACHED */ 169 return (0); 170 } 171 172 static void 173 usage(void) 174 { 175 (void) fprintf(stderr, gettext("usage: asa [-f] [-|file...]\n")); 176 exit(1); 177 } 178 179 180 static void 181 disp_file(FILE *f, char *filename) 182 { 183 184 if (ferror(f)) { 185 int serror = errno; 186 if (filename) { 187 (void) fprintf(stderr, gettext( 188 "asa: read error on file %s\n"), filename); 189 } else { 190 (void) fprintf(stderr, gettext( 191 "asa: read error on standard input\n")); 192 } 193 errno = serror; 194 perror(""); 195 estatus = 1; 196 } 197 198 (void) fclose(f); 199 200 } 201 202 static FILE * 203 get_next_file(int need_a_newline, char *filename, char *argv[], int argc) 204 { 205 FILE *f; 206 if (strcmp(argv[i], "-") == 0) { 207 filename = NULL; 208 f = stdin; 209 } else { 210 /* 211 * Process each file operand. If unsuccessful, affect the 212 * exit status and continue processing the next operand. 213 */ 214 filename = argv[i]; 215 while ((f = fopen(filename, "r")) == NULL) { 216 int serror = errno; 217 (void) fprintf(stderr, 218 gettext("asa: cannot open %s:"), filename); 219 errno = serror; 220 perror(""); 221 estatus = 1; 222 if (++i < argc) { 223 if (strcmp(argv[i], "-") == 0) { 224 filename = NULL; 225 f = stdin; 226 break; 227 } else { 228 filename = argv[i]; 229 } 230 } else { 231 finish(need_a_newline); 232 } 233 } 234 } 235 ++i; 236 return (f); 237 } 238 239 static void 240 finish(int need_a_newline) 241 { 242 if (need_a_newline) 243 (void) putchar(NL); 244 exit(estatus); 245 } 246