1 /* $NetBSD: paste.c,v 1.5 1998/02/03 03:56:44 perry Exp $ */ 2 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. 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 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1989, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 /*static char sccsid[] = "from: @(#)paste.c 8.1 (Berkeley) 6/6/93";*/ 47 __RCSID("$NetBSD: paste.c,v 1.5 1998/02/03 03:56:44 perry Exp $"); 48 #endif /* not lint */ 49 50 #include <sys/types.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <limits.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <unistd.h> 58 59 int main __P((int, char **)); 60 void parallel __P((char **)); 61 void sequential __P((char **)); 62 int tr __P((char *)); 63 void usage __P((void)); 64 65 char *delim; 66 int delimcnt; 67 68 int 69 main(argc, argv) 70 int argc; 71 char **argv; 72 { 73 int ch, seq; 74 75 seq = 0; 76 while ((ch = getopt(argc, argv, "d:s")) != -1) 77 switch(ch) { 78 case 'd': 79 delimcnt = tr(delim = optarg); 80 break; 81 case 's': 82 seq = 1; 83 break; 84 case '?': 85 default: 86 usage(); 87 } 88 argc -= optind; 89 argv += optind; 90 91 if (!delim) { 92 delimcnt = 1; 93 delim = "\t"; 94 } 95 96 if (seq) 97 sequential(argv); 98 else 99 parallel(argv); 100 exit(0); 101 } 102 103 typedef struct _list { 104 struct _list *next; 105 FILE *fp; 106 int cnt; 107 char *name; 108 } LIST; 109 110 void 111 parallel(argv) 112 char **argv; 113 { 114 LIST *lp; 115 int cnt; 116 char ch, *p; 117 LIST *head, *tmp; 118 int opencnt, output; 119 char buf[_POSIX2_LINE_MAX + 1]; 120 121 tmp = NULL; 122 for (cnt = 0, head = NULL; (p = *argv) != NULL; ++argv, ++cnt) { 123 if (!(lp = (LIST *)malloc((u_int)sizeof(LIST)))) 124 err(1, "malloc"); 125 if (p[0] == '-' && !p[1]) 126 lp->fp = stdin; 127 else if (!(lp->fp = fopen(p, "r"))) 128 err(1, "%s", p); 129 lp->next = NULL; 130 lp->cnt = cnt; 131 lp->name = p; 132 if (!head) 133 head = tmp = lp; 134 else { 135 tmp->next = lp; 136 tmp = lp; 137 } 138 } 139 140 for (opencnt = cnt; opencnt;) { 141 for (output = 0, lp = head; lp; lp = lp->next) { 142 if (!lp->fp) { 143 if (output && lp->cnt && 144 (ch = delim[(lp->cnt - 1) % delimcnt])) 145 putchar(ch); 146 continue; 147 } 148 if (!fgets(buf, sizeof(buf), lp->fp)) { 149 if (!--opencnt) 150 break; 151 lp->fp = NULL; 152 if (output && lp->cnt && 153 (ch = delim[(lp->cnt - 1) % delimcnt])) 154 putchar(ch); 155 continue; 156 } 157 if (!(p = strchr(buf, '\n'))) 158 err(1, "%s: input line too long.", lp->name); 159 *p = '\0'; 160 /* 161 * make sure that we don't print any delimiters 162 * unless there's a non-empty file. 163 */ 164 if (!output) { 165 output = 1; 166 for (cnt = 0; cnt < lp->cnt; ++cnt) 167 if ((ch = delim[cnt % delimcnt]) != 0) 168 putchar(ch); 169 } else if ((ch = delim[(lp->cnt - 1) % delimcnt]) != 0) 170 putchar(ch); 171 (void)printf("%s", buf); 172 } 173 if (output) 174 putchar('\n'); 175 } 176 } 177 178 void 179 sequential(argv) 180 char **argv; 181 { 182 FILE *fp; 183 int cnt; 184 char ch, *p, *dp; 185 char buf[_POSIX2_LINE_MAX + 1]; 186 187 for (; (p = *argv) != NULL; ++argv) { 188 if (p[0] == '-' && !p[1]) 189 fp = stdin; 190 else if (!(fp = fopen(p, "r"))) { 191 warn("%s", p); 192 continue; 193 } 194 if (fgets(buf, sizeof(buf), fp)) { 195 for (cnt = 0, dp = delim;;) { 196 if (!(p = strchr(buf, '\n'))) 197 err(1, "%s: input line too long.", 198 *argv); 199 *p = '\0'; 200 (void)printf("%s", buf); 201 if (!fgets(buf, sizeof(buf), fp)) 202 break; 203 if ((ch = *dp++) != 0) 204 putchar(ch); 205 if (++cnt == delimcnt) { 206 dp = delim; 207 cnt = 0; 208 } 209 } 210 putchar('\n'); 211 } 212 if (fp != stdin) 213 (void)fclose(fp); 214 } 215 } 216 217 int 218 tr(arg) 219 char *arg; 220 { 221 int cnt; 222 char ch, *p; 223 224 for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) 225 if (ch == '\\') 226 switch(ch = *p++) { 227 case 'n': 228 *arg = '\n'; 229 break; 230 case 't': 231 *arg = '\t'; 232 break; 233 case '0': 234 *arg = '\0'; 235 break; 236 default: 237 *arg = ch; 238 break; 239 } else 240 *arg = ch; 241 242 if (!cnt) 243 errx(1, "no delimiters specified."); 244 return(cnt); 245 } 246 247 void 248 usage() 249 { 250 (void)fprintf(stderr, "paste: [-s] [-d delimiters] file ...\n"); 251 exit(1); 252 } 253