1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Adam S. Moskowitz of Menlo Consulting. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#ifndef lint 38static const char copyright[] = 39"@(#) Copyright (c) 1989, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41#endif /* not lint */ 42 43#if 0 44#ifndef lint 45static char sccsid[] = "@(#)paste.c 8.1 (Berkeley) 6/6/93"; 46#endif /* not lint */ 47#endif 48 49#include <sys/cdefs.h> 50__FBSDID("$FreeBSD: src/usr.bin/paste/paste.c,v 1.14 2004/06/25 01:48:43 tjr Exp $"); 51 52#include <sys/types.h> 53 54#include <err.h> 55#include <errno.h> 56#include <limits.h> 57#include <locale.h> 58#include <stdio.h> 59#include <stdlib.h> 60#include <string.h> 61#include <unistd.h> 62#include <wchar.h> 63#include <sysexits.h> 64 65wchar_t *delim; 66int delimcnt; 67 68int parallel(char **); 69int sequential(char **); 70int tr(wchar_t *); 71static void usage(void); 72 73wchar_t tab[] = L"\t"; 74 75int 76main(int argc, char *argv[]) 77{ 78 int ch, rval, seq; 79 wchar_t *warg; 80 const char *arg; 81 size_t len; 82 83 setlocale(LC_CTYPE, ""); 84 85 seq = 0; 86 while ((ch = getopt(argc, argv, "d:s")) != -1) 87 switch(ch) { 88 case 'd': 89 arg = optarg; 90 len = mbsrtowcs(NULL, &arg, 0, NULL); 91 if (len == (size_t)-1) 92 err(1, "delimiters"); 93 warg = malloc((len + 1) * sizeof(*warg)); 94 if (warg == NULL) 95 err(1, NULL); 96 arg = optarg; 97 len = mbsrtowcs(warg, &arg, len + 1, NULL); 98 if (len == (size_t)-1) 99 err(1, "delimiters"); 100 delimcnt = tr(delim = warg); 101 break; 102 case 's': 103 seq = 1; 104 break; 105 case '?': 106 default: 107 usage(); 108 } 109 argc -= optind; 110 argv += optind; 111 112 if (*argv == NULL) 113 usage(); 114 if (!delim) { 115 delimcnt = 1; 116 delim = tab; 117 } 118 119 if (seq) 120 rval = sequential(argv); 121 else 122 rval = parallel(argv); 123 exit(rval); 124} 125 126typedef struct _list { 127 struct _list *next; 128 FILE *fp; 129 int cnt; 130 char *name; 131} LIST; 132 133int 134parallel(char **argv) 135{ 136 LIST *lp; 137 int cnt; 138 wint_t ich; 139 wchar_t ch; 140 char *p; 141 LIST *head, *tmp; 142 int opencnt, output; 143 144 for (cnt = 0, head = NULL; (p = *argv); ++argv, ++cnt) { 145 if ((lp = malloc(sizeof(LIST))) == NULL) 146 err(1, NULL); 147 if (p[0] == '-' && !p[1]) 148 lp->fp = stdin; 149 else if (!(lp->fp = fopen(p, "r"))) 150 err(1, "%s", p); 151 lp->next = NULL; 152 lp->cnt = cnt; 153 lp->name = p; 154 if (!head) 155 head = tmp = lp; 156 else { 157 tmp->next = lp; 158 tmp = lp; 159 } 160 } 161 162 for (opencnt = cnt; opencnt;) { 163 for (output = 0, lp = head; lp; lp = lp->next) { 164 if (!lp->fp) { 165 if (output && lp->cnt && 166 (ch = delim[(lp->cnt - 1) % delimcnt])) 167 putwchar(ch); 168 continue; 169 } 170 if ((ich = getwc(lp->fp)) == WEOF) { 171 if (!--opencnt) 172 break; 173 lp->fp = NULL; 174 if (output && lp->cnt && 175 (ch = delim[(lp->cnt - 1) % delimcnt])) 176 putwchar(ch); 177 continue; 178 } 179 /* 180 * make sure that we don't print any delimiters 181 * unless there's a non-empty file. 182 */ 183 if (!output) { 184 output = 1; 185 for (cnt = 0; cnt < lp->cnt; ++cnt) 186 if ((ch = delim[cnt % delimcnt])) 187 putwchar(ch); 188 } else if ((ch = delim[(lp->cnt - 1) % delimcnt])) 189 putwchar(ch); 190 if (ich == '\n') 191 continue; 192 do { 193 putwchar(ich); 194 } while ((ich = getwc(lp->fp)) != WEOF && ich != '\n'); 195 if (ferror(lp->fp)) { 196 errx(EX_IOERR, "Error reading %s", lp->name); 197 } 198 } 199 if (output) 200 putwchar('\n'); 201 } 202 203 return (0); 204} 205 206int 207sequential(char **argv) 208{ 209 FILE *fp; 210 int cnt, failed, needdelim; 211 wint_t ch; 212 char *p; 213 214 failed = 0; 215 for (; (p = *argv); ++argv) { 216 if (p[0] == '-' && !p[1]) 217 fp = stdin; 218 else if (!(fp = fopen(p, "r"))) { 219 warn("%s", p); 220 failed = 1; 221 continue; 222 } 223 cnt = needdelim = 0; 224 while ((ch = getwc(fp)) != WEOF) { 225 if (needdelim) { 226 needdelim = 0; 227 if (delim[cnt] != '\0') 228 putwchar(delim[cnt]); 229 if (++cnt == delimcnt) 230 cnt = 0; 231 } 232 if (ch != '\n') 233 putwchar(ch); 234 else 235 needdelim = 1; 236 } 237 if (needdelim) 238 putwchar('\n'); 239 if (fp != stdin) 240 (void)fclose(fp); 241 } 242 243 return (failed != 0); 244} 245 246int 247tr(wchar_t *arg) 248{ 249 int cnt; 250 wchar_t ch, *p; 251 252 for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) 253 if (ch == '\\') 254 switch(ch = *p++) { 255 case 'n': 256 *arg = '\n'; 257 break; 258 case 't': 259 *arg = '\t'; 260 break; 261 case '0': 262 *arg = '\0'; 263 break; 264 default: 265 *arg = ch; 266 break; 267 } else 268 *arg = ch; 269 270 if (!cnt) 271 errx(1, "no delimiters specified"); 272 return(cnt); 273} 274 275static void 276usage(void) 277{ 278 (void)fprintf(stderr, "usage: paste [-s] [-d delimiters] file ...\n"); 279 exit(1); 280} 281