diff options
Diffstat (limited to 'usr.bin/paste/paste.c')
| -rw-r--r-- | usr.bin/paste/paste.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/usr.bin/paste/paste.c b/usr.bin/paste/paste.c new file mode 100644 index 0000000..7f17e1d --- /dev/null +++ b/usr.bin/paste/paste.c @@ -0,0 +1,251 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Adam S. Moskowitz of Menlo Consulting. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char copyright[] = +"@(#) Copyright (c) 1989, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)paste.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <sys/types.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> + +char *delim; +int delimcnt; + +main(argc, argv) + int argc; + char **argv; +{ + extern char *optarg; + extern int optind; + int ch, seq; + + seq = 0; + while ((ch = getopt(argc, argv, "d:s")) != EOF) + switch(ch) { + case 'd': + delimcnt = tr(delim = optarg); + break; + case 's': + seq = 1; + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + if (!delim) { + delimcnt = 1; + delim = "\t"; + } + + if (seq) + sequential(argv); + else + parallel(argv); + exit(0); +} + +typedef struct _list { + struct _list *next; + FILE *fp; + int cnt; + char *name; +} LIST; + +parallel(argv) + char **argv; +{ + register LIST *lp; + register int cnt; + register char ch, *p; + LIST *head, *tmp; + int opencnt, output; + char buf[_POSIX2_LINE_MAX + 1], *malloc(); + + for (cnt = 0, head = NULL; p = *argv; ++argv, ++cnt) { + if (!(lp = (LIST *)malloc((u_int)sizeof(LIST)))) { + (void)fprintf(stderr, "paste: %s.\n", strerror(ENOMEM)); + exit(1); + } + if (p[0] == '-' && !p[1]) + lp->fp = stdin; + else if (!(lp->fp = fopen(p, "r"))) { + (void)fprintf(stderr, "paste: %s: %s.\n", p, + strerror(errno)); + exit(1); + } + lp->next = NULL; + lp->cnt = cnt; + lp->name = p; + if (!head) + head = tmp = lp; + else { + tmp->next = lp; + tmp = lp; + } + } + + for (opencnt = cnt; opencnt;) { + for (output = 0, lp = head; lp; lp = lp->next) { + if (!lp->fp) { + if (output && lp->cnt && + (ch = delim[(lp->cnt - 1) % delimcnt])) + putchar(ch); + continue; + } + if (!fgets(buf, sizeof(buf), lp->fp)) { + if (!--opencnt) + break; + lp->fp = NULL; + if (output && lp->cnt && + (ch = delim[(lp->cnt - 1) % delimcnt])) + putchar(ch); + continue; + } + if (!(p = index(buf, '\n'))) { + (void)fprintf(stderr, + "paste: %s: input line too long.\n", + lp->name); + exit(1); + } + *p = '\0'; + /* + * make sure that we don't print any delimiters + * unless there's a non-empty file. + */ + if (!output) { + output = 1; + for (cnt = 0; cnt < lp->cnt; ++cnt) + if (ch = delim[cnt % delimcnt]) + putchar(ch); + } else if (ch = delim[(lp->cnt - 1) % delimcnt]) + putchar(ch); + (void)printf("%s", buf); + } + if (output) + putchar('\n'); + } +} + +sequential(argv) + char **argv; +{ + register FILE *fp; + register int cnt; + register char ch, *p, *dp; + char buf[_POSIX2_LINE_MAX + 1]; + + for (; p = *argv; ++argv) { + if (p[0] == '-' && !p[1]) + fp = stdin; + else if (!(fp = fopen(p, "r"))) { + (void)fprintf(stderr, "paste: %s: %s.\n", p, + strerror(errno)); + continue; + } + if (fgets(buf, sizeof(buf), fp)) { + for (cnt = 0, dp = delim;;) { + if (!(p = index(buf, '\n'))) { + (void)fprintf(stderr, + "paste: %s: input line too long.\n", + *argv); + exit(1); + } + *p = '\0'; + (void)printf("%s", buf); + if (!fgets(buf, sizeof(buf), fp)) + break; + if (ch = *dp++) + putchar(ch); + if (++cnt == delimcnt) { + dp = delim; + cnt = 0; + } + } + putchar('\n'); + } + if (fp != stdin) + (void)fclose(fp); + } +} + +tr(arg) + char *arg; +{ + register int cnt; + register char ch, *p; + + for (p = arg, cnt = 0; (ch = *p++); ++arg, ++cnt) + if (ch == '\\') + switch(ch = *p++) { + case 'n': + *arg = '\n'; + break; + case 't': + *arg = '\t'; + break; + case '0': + *arg = '\0'; + break; + default: + *arg = ch; + break; + } else + *arg = ch; + + if (!cnt) { + (void)fprintf(stderr, "paste: no delimiters specified.\n"); + exit(1); + } + return(cnt); +} + +usage() +{ + (void)fprintf(stderr, "paste: [-s] [-d delimiters] file ...\n"); + exit(1); +} |
