1 /* $OpenBSD: paste.c,v 1.2 1996/06/26 05:37:50 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1989 The Regents of the University of California. 5 * 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #ifndef lint 40 char copyright[] = 41 "@(#) Copyright (c) 1989 The Regents of the University of California.\n\ 42 All rights reserved.\n"; 43 #endif /* not lint */ 44 45 #ifndef lint 46 /*static char sccsid[] = "from: @(#)paste.c 5.7 (Berkeley) 10/30/90";*/ 47 static char rcsid[] = "$OpenBSD: paste.c,v 1.2 1996/06/26 05:37:50 deraadt Exp $"; 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 #include <errno.h> 52 #include <limits.h> 53 #include <stdio.h> 54 #include <string.h> 55 56 char *delim; 57 int delimcnt; 58 59 main(argc, argv) 60 int argc; 61 char **argv; 62 { 63 extern char *optarg; 64 extern int optind; 65 int ch, seq; 66 67 seq = 0; 68 while ((ch = getopt(argc, argv, "d:s")) != EOF) 69 switch(ch) { 70 case 'd': 71 delimcnt = tr(delim = optarg); 72 break; 73 case 's': 74 seq = 1; 75 break; 76 case '?': 77 default: 78 usage(); 79 } 80 argc -= optind; 81 argv += optind; 82 83 if (!delim) { 84 delimcnt = 1; 85 delim = "\t"; 86 } 87 88 if (seq) 89 sequential(argv); 90 else 91 parallel(argv); 92 exit(0); 93 } 94 95 typedef struct _list { 96 struct _list *next; 97 FILE *fp; 98 int cnt; 99 char *name; 100 } LIST; 101 102 parallel(argv) 103 char **argv; 104 { 105 register LIST *lp; 106 register int cnt; 107 register char ch, *p; 108 LIST *head, *tmp; 109 int opencnt, output; 110 char buf[_POSIX2_LINE_MAX + 1], *malloc(); 111 112 for (cnt = 0, head = NULL; p = *argv; ++argv, ++cnt) { 113 if (!(lp = (LIST *)malloc((u_int)sizeof(LIST)))) { 114 (void)fprintf(stderr, "paste: %s.\n", strerror(ENOMEM)); 115 exit(1); 116 } 117 if (p[0] == '-' && !p[1]) 118 lp->fp = stdin; 119 else if (!(lp->fp = fopen(p, "r"))) { 120 (void)fprintf(stderr, "paste: %s: %s.\n", p, 121 strerror(errno)); 122 exit(1); 123 } 124 lp->next = NULL; 125 lp->cnt = cnt; 126 lp->name = p; 127 if (!head) 128 head = tmp = lp; 129 else { 130 tmp->next = lp; 131 tmp = lp; 132 } 133 } 134 135 for (opencnt = cnt; opencnt;) { 136 for (output = 0, lp = head; lp; lp = lp->next) { 137 if (!lp->fp) { 138 if (output && lp->cnt && 139 (ch = delim[(lp->cnt - 1) % delimcnt])) 140 putchar(ch); 141 continue; 142 } 143 if (!fgets(buf, sizeof(buf), lp->fp)) { 144 if (!--opencnt) 145 break; 146 lp->fp = NULL; 147 if (output && lp->cnt && 148 (ch = delim[(lp->cnt - 1) % delimcnt])) 149 putchar(ch); 150 continue; 151 } 152 if (!(p = index(buf, '\n'))) { 153 (void)fprintf(stderr, 154 "paste: %s: input line too long.\n", 155 lp->name); 156 exit(1); 157 } 158 *p = '\0'; 159 /* 160 * make sure that we don't print any delimiters 161 * unless there's a non-empty file. 162 */ 163 if (!output) { 164 output = 1; 165 for (cnt = 0; cnt < lp->cnt; ++cnt) 166 if (ch = delim[cnt % delimcnt]) 167 putchar(ch); 168 } else if (ch = delim[(lp->cnt - 1) % delimcnt]) 169 putchar(ch); 170 (void)printf("%s", buf); 171 } 172 if (output) 173 putchar('\n'); 174 } 175 } 176 177 sequential(argv) 178 char **argv; 179 { 180 register FILE *fp; 181 register int cnt; 182 register char ch, *p, *dp; 183 char buf[_POSIX2_LINE_MAX + 1]; 184 185 for (; p = *argv; ++argv) { 186 if (p[0] == '-' && !p[1]) 187 fp = stdin; 188 else if (!(fp = fopen(p, "r"))) { 189 (void)fprintf(stderr, "paste: %s: %s.\n", p, 190 strerror(errno)); 191 continue; 192 } 193 if (fgets(buf, sizeof(buf), fp)) { 194 for (cnt = 0, dp = delim;;) { 195 if (!(p = index(buf, '\n'))) { 196 (void)fprintf(stderr, 197 "paste: %s: input line too long.\n", 198 *argv); 199 exit(1); 200 } 201 *p = '\0'; 202 (void)printf("%s", buf); 203 if (!fgets(buf, sizeof(buf), fp)) 204 break; 205 if (ch = *dp++) 206 putchar(ch); 207 if (++cnt == delimcnt) { 208 dp = delim; 209 cnt = 0; 210 } 211 } 212 putchar('\n'); 213 } 214 if (fp != stdin) 215 (void)fclose(fp); 216 } 217 } 218 219 tr(arg) 220 char *arg; 221 { 222 register int cnt; 223 register char ch, *p; 224 225 for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) 226 if (ch == '\\') 227 switch(ch = *p++) { 228 case 'n': 229 *arg = '\n'; 230 break; 231 case 't': 232 *arg = '\t'; 233 break; 234 case '0': 235 *arg = '\0'; 236 break; 237 default: 238 *arg = ch; 239 break; 240 } else 241 *arg = ch; 242 243 if (!cnt) { 244 (void)fprintf(stderr, "paste: no delimiters specified.\n"); 245 exit(1); 246 } 247 return(cnt); 248 } 249 250 usage() 251 { 252 (void)fprintf(stderr, "paste: [-s] [-d delimiters] file ...\n"); 253 exit(1); 254 } 255