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1.17 ! deraadt 1: /* $OpenBSD: paste.c,v 1.16 2007/08/06 19:16:06 sobrado Exp $ */
1.2 deraadt 2:
1.1 deraadt 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.
1.11 millert 18: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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:
1.15 ray 35: #include <sys/queue.h>
1.1 deraadt 36: #include <sys/types.h>
1.13 david 37: #include <err.h>
1.1 deraadt 38: #include <errno.h>
39: #include <limits.h>
40: #include <stdio.h>
1.6 aaron 41: #include <stdlib.h>
1.1 deraadt 42: #include <string.h>
1.6 aaron 43: #include <unistd.h>
1.1 deraadt 44:
45: char *delim;
46: int delimcnt;
47:
1.10 millert 48: int tr(char *);
49: void usage(void);
50: void parallel(char **);
51: void sequential(char **);
1.5 deraadt 52:
53: int
1.12 deraadt 54: main(int argc, char *argv[])
1.1 deraadt 55: {
56: extern char *optarg;
57: extern int optind;
58: int ch, seq;
59:
60: seq = 0;
1.3 millert 61: while ((ch = getopt(argc, argv, "d:s")) != -1)
1.1 deraadt 62: switch(ch) {
63: case 'd':
64: delimcnt = tr(delim = optarg);
65: break;
66: case 's':
67: seq = 1;
68: break;
69: case '?':
70: default:
71: usage();
72: }
73: argc -= optind;
74: argv += optind;
75:
76: if (!delim) {
77: delimcnt = 1;
78: delim = "\t";
79: }
80:
81: if (seq)
82: sequential(argv);
83: else
84: parallel(argv);
85: exit(0);
86: }
87:
1.15 ray 88: struct list {
89: SIMPLEQ_ENTRY(list) entries;
1.1 deraadt 90: FILE *fp;
91: int cnt;
92: char *name;
1.15 ray 93: };
1.1 deraadt 94:
1.5 deraadt 95: void
1.12 deraadt 96: parallel(char **argv)
1.1 deraadt 97: {
1.15 ray 98: SIMPLEQ_HEAD(, list) head = SIMPLEQ_HEAD_INITIALIZER(head);
99: struct list *lp;
1.9 mpech 100: int cnt;
101: char ch, *p;
1.1 deraadt 102: int opencnt, output;
1.7 aaron 103: char *buf, *lbuf;
1.6 aaron 104: size_t len;
1.1 deraadt 105:
1.15 ray 106: for (cnt = 0; (p = *argv); ++argv, ++cnt) {
107: if (!(lp = malloc(sizeof(struct list))))
1.14 mickey 108: err(1, "malloc");
109:
1.1 deraadt 110: if (p[0] == '-' && !p[1])
111: lp->fp = stdin;
1.14 mickey 112: else if (!(lp->fp = fopen(p, "r")))
113: err(1, "%s", p);
1.1 deraadt 114: lp->cnt = cnt;
115: lp->name = p;
1.15 ray 116: SIMPLEQ_INSERT_TAIL(&head, lp, entries);
1.1 deraadt 117: }
118:
119: for (opencnt = cnt; opencnt;) {
1.15 ray 120: output = 0;
121: SIMPLEQ_FOREACH(lp, &head, entries) {
1.8 aaron 122: lbuf = NULL;
1.1 deraadt 123: if (!lp->fp) {
124: if (output && lp->cnt &&
125: (ch = delim[(lp->cnt - 1) % delimcnt]))
126: putchar(ch);
127: continue;
128: }
1.7 aaron 129: if (!(buf = fgetln(lp->fp, &len))) {
1.1 deraadt 130: if (!--opencnt)
131: break;
132: lp->fp = NULL;
133: if (output && lp->cnt &&
134: (ch = delim[(lp->cnt - 1) % delimcnt]))
135: putchar(ch);
136: continue;
137: }
1.7 aaron 138: if (*(buf + len - 1) == '\n')
139: *(buf + len - 1) = '\0';
1.6 aaron 140: else {
1.8 aaron 141: if ((lbuf = malloc(len + 1)) == NULL)
1.14 mickey 142: err(1, "malloc");
1.7 aaron 143: memcpy(lbuf, buf, len);
144: lbuf[len] = '\0';
145: buf = lbuf;
1.1 deraadt 146: }
147: /*
148: * make sure that we don't print any delimiters
149: * unless there's a non-empty file.
150: */
151: if (!output) {
152: output = 1;
153: for (cnt = 0; cnt < lp->cnt; ++cnt)
1.5 deraadt 154: if ((ch = delim[cnt % delimcnt]))
1.1 deraadt 155: putchar(ch);
1.5 deraadt 156: } else if ((ch = delim[(lp->cnt - 1) % delimcnt]))
1.1 deraadt 157: putchar(ch);
1.7 aaron 158: (void)printf("%s", buf);
1.8 aaron 159: if (lbuf)
1.7 aaron 160: free(lbuf);
1.1 deraadt 161: }
162: if (output)
163: putchar('\n');
164: }
165: }
166:
1.5 deraadt 167: void
1.12 deraadt 168: sequential(char **argv)
1.1 deraadt 169: {
1.9 mpech 170: FILE *fp;
171: int cnt;
172: char ch, *p, *dp;
1.7 aaron 173: char *buf, *lbuf;
174: size_t len;
1.1 deraadt 175:
1.5 deraadt 176: for (; (p = *argv); ++argv) {
1.8 aaron 177: lbuf = NULL;
1.1 deraadt 178: if (p[0] == '-' && !p[1])
179: fp = stdin;
180: else if (!(fp = fopen(p, "r"))) {
1.14 mickey 181: warn("%s", p);
1.1 deraadt 182: continue;
183: }
1.7 aaron 184: if ((buf = fgetln(fp, &len))) {
1.1 deraadt 185: for (cnt = 0, dp = delim;;) {
1.7 aaron 186: if (*(buf + len - 1) == '\n')
187: *(buf + len - 1) = '\0';
188: else {
1.8 aaron 189: if ((lbuf = malloc(len + 1)) == NULL)
1.14 mickey 190: err(1, "malloc");
1.7 aaron 191: memcpy(lbuf, buf, len);
192: lbuf[len] = '\0';
193: buf = lbuf;
1.1 deraadt 194: }
195: (void)printf("%s", buf);
1.7 aaron 196: if (!(buf = fgetln(fp, &len)))
1.1 deraadt 197: break;
1.5 deraadt 198: if ((ch = *dp++))
1.1 deraadt 199: putchar(ch);
200: if (++cnt == delimcnt) {
201: dp = delim;
202: cnt = 0;
203: }
204: }
205: putchar('\n');
206: }
207: if (fp != stdin)
208: (void)fclose(fp);
1.8 aaron 209: if (lbuf)
1.7 aaron 210: free(lbuf);
1.1 deraadt 211: }
212: }
213:
1.5 deraadt 214: int
1.12 deraadt 215: tr(char *arg)
1.1 deraadt 216: {
1.9 mpech 217: int cnt;
218: char ch, *p;
1.1 deraadt 219:
220: for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt)
221: if (ch == '\\')
222: switch(ch = *p++) {
223: case 'n':
224: *arg = '\n';
225: break;
226: case 't':
227: *arg = '\t';
228: break;
229: case '0':
230: *arg = '\0';
231: break;
232: default:
233: *arg = ch;
234: break;
235: } else
236: *arg = ch;
237:
1.14 mickey 238: if (!cnt)
239: errx(1, "no delimiters specified");
1.1 deraadt 240: return(cnt);
241: }
242:
1.5 deraadt 243: void
1.12 deraadt 244: usage(void)
1.1 deraadt 245: {
1.14 mickey 246: extern char *__progname;
1.16 sobrado 247: (void)fprintf(stderr, "usage: %s [-s] [-d list] file ...\n",
248: __progname);
1.1 deraadt 249: exit(1);
250: }