1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam S. Moskowitz of Menlo Consulting. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef lint 36 static const char copyright[] = 37 "@(#) Copyright (c) 1989, 1993\n\ 38 The Regents of the University of California. All rights reserved.\n"; 39 #endif /* not lint */ 40 41 #if 0 42 #ifndef lint 43 static char sccsid[] = "@(#)paste.c 8.1 (Berkeley) 6/6/93"; 44 #endif /* not lint */ 45 #endif 46 47 #include <sys/cdefs.h> 48 __FBSDID("$FreeBSD$"); 49 50 #include <sys/types.h> 51 52 #include <err.h> 53 #include <errno.h> 54 #include <limits.h> 55 #include <locale.h> 56 #include <stdio.h> 57 #include <stdlib.h> 58 #include <string.h> 59 #include <unistd.h> 60 #include <wchar.h> 61 62 static wchar_t *delim; 63 static int delimcnt; 64 65 static int parallel(char **); 66 static int sequential(char **); 67 static int tr(wchar_t *); 68 static void usage(void); 69 70 static wchar_t tab[] = L"\t"; 71 72 int 73 main(int argc, char *argv[]) 74 { 75 int ch, rval, seq; 76 wchar_t *warg; 77 const char *arg; 78 size_t len; 79 80 setlocale(LC_CTYPE, ""); 81 82 seq = 0; 83 while ((ch = getopt(argc, argv, "d:s")) != -1) 84 switch(ch) { 85 case 'd': 86 arg = optarg; 87 len = mbsrtowcs(NULL, &arg, 0, NULL); 88 if (len == (size_t)-1) 89 err(1, "delimiters"); 90 warg = malloc((len + 1) * sizeof(*warg)); 91 if (warg == NULL) 92 err(1, NULL); 93 arg = optarg; 94 len = mbsrtowcs(warg, &arg, len + 1, NULL); 95 if (len == (size_t)-1) 96 err(1, "delimiters"); 97 delimcnt = tr(delim = warg); 98 break; 99 case 's': 100 seq = 1; 101 break; 102 case '?': 103 default: 104 usage(); 105 } 106 argc -= optind; 107 argv += optind; 108 109 if (*argv == NULL) 110 usage(); 111 if (!delim) { 112 delimcnt = 1; 113 delim = tab; 114 } 115 116 if (seq) 117 rval = sequential(argv); 118 else 119 rval = parallel(argv); 120 exit(rval); 121 } 122 123 typedef struct _list { 124 struct _list *next; 125 FILE *fp; 126 int cnt; 127 char *name; 128 } LIST; 129 130 static int 131 parallel(char **argv) 132 { 133 LIST *lp; 134 int cnt; 135 wint_t ich; 136 wchar_t ch; 137 char *p; 138 LIST *head, *tmp; 139 int opencnt, output; 140 141 for (cnt = 0, head = tmp = NULL; (p = *argv); ++argv, ++cnt) { 142 if ((lp = malloc(sizeof(LIST))) == NULL) 143 err(1, NULL); 144 if (p[0] == '-' && !p[1]) 145 lp->fp = stdin; 146 else if (!(lp->fp = fopen(p, "r"))) 147 err(1, "%s", p); 148 lp->next = NULL; 149 lp->cnt = cnt; 150 lp->name = p; 151 if (!head) 152 head = tmp = lp; 153 else { 154 tmp->next = lp; 155 tmp = lp; 156 } 157 } 158 159 for (opencnt = cnt; opencnt;) { 160 for (output = 0, lp = head; lp; lp = lp->next) { 161 if (!lp->fp) { 162 if (output && lp->cnt && 163 (ch = delim[(lp->cnt - 1) % delimcnt])) 164 putwchar(ch); 165 continue; 166 } 167 if ((ich = getwc(lp->fp)) == WEOF) { 168 if (!--opencnt) 169 break; 170 lp->fp = NULL; 171 if (output && lp->cnt && 172 (ch = delim[(lp->cnt - 1) % delimcnt])) 173 putwchar(ch); 174 continue; 175 } 176 /* 177 * make sure that we don't print any delimiters 178 * unless there's a non-empty file. 179 */ 180 if (!output) { 181 output = 1; 182 for (cnt = 0; cnt < lp->cnt; ++cnt) 183 if ((ch = delim[cnt % delimcnt])) 184 putwchar(ch); 185 } else if ((ch = delim[(lp->cnt - 1) % delimcnt])) 186 putwchar(ch); 187 if (ich == '\n') 188 continue; 189 do { 190 putwchar(ich); 191 } while ((ich = getwc(lp->fp)) != WEOF && ich != '\n'); 192 } 193 if (output) 194 putwchar('\n'); 195 } 196 197 return (0); 198 } 199 200 static int 201 sequential(char **argv) 202 { 203 FILE *fp; 204 int cnt, failed, needdelim; 205 wint_t ch; 206 char *p; 207 208 failed = 0; 209 for (; (p = *argv); ++argv) { 210 if (p[0] == '-' && !p[1]) 211 fp = stdin; 212 else if (!(fp = fopen(p, "r"))) { 213 warn("%s", p); 214 failed = 1; 215 continue; 216 } 217 cnt = needdelim = 0; 218 while ((ch = getwc(fp)) != WEOF) { 219 if (needdelim) { 220 needdelim = 0; 221 if (delim[cnt] != '\0') 222 putwchar(delim[cnt]); 223 if (++cnt == delimcnt) 224 cnt = 0; 225 } 226 if (ch != '\n') 227 putwchar(ch); 228 else 229 needdelim = 1; 230 } 231 if (needdelim) 232 putwchar('\n'); 233 if (fp != stdin) 234 (void)fclose(fp); 235 } 236 237 return (failed != 0); 238 } 239 240 static int 241 tr(wchar_t *arg) 242 { 243 int cnt; 244 wchar_t ch, *p; 245 246 for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) 247 if (ch == '\\') 248 switch(ch = *p++) { 249 case 'n': 250 *arg = '\n'; 251 break; 252 case 't': 253 *arg = '\t'; 254 break; 255 case '0': 256 *arg = '\0'; 257 break; 258 default: 259 *arg = ch; 260 break; 261 } else 262 *arg = ch; 263 264 if (!cnt) 265 errx(1, "no delimiters specified"); 266 return(cnt); 267 } 268 269 static void 270 usage(void) 271 { 272 (void)fprintf(stderr, "usage: paste [-s] [-d delimiters] file ...\n"); 273 exit(1); 274 } 275