diff options
Diffstat (limited to 'usr.bin/cut')
-rw-r--r-- | usr.bin/cut/Makefile | 5 | ||||
-rw-r--r-- | usr.bin/cut/cut.1 | 110 | ||||
-rw-r--r-- | usr.bin/cut/cut.c | 296 |
3 files changed, 411 insertions, 0 deletions
diff --git a/usr.bin/cut/Makefile b/usr.bin/cut/Makefile new file mode 100644 index 0000000..19b0100 --- /dev/null +++ b/usr.bin/cut/Makefile @@ -0,0 +1,5 @@ +# @(#)Makefile 8.1 (Berkeley) 6/6/93 + +PROG= cut + +.include <bsd.prog.mk> diff --git a/usr.bin/cut/cut.1 b/usr.bin/cut/cut.1 new file mode 100644 index 0000000..97c5645 --- /dev/null +++ b/usr.bin/cut/cut.1 @@ -0,0 +1,110 @@ +.\" Copyright (c) 1989, 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" 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. +.\" +.\" @(#)cut.1 8.1 (Berkeley) 6/6/93 +.\" +.Dd June 6, 1993 +.Dt CUT 1 +.Os +.Sh NAME +.Nm cut +.Nd select portions of each line of a file +.Sh SYNOPSIS +.Nm cut +.Fl c Ar list +.Ar +.Nm cut +.Fl f Ar list +.Op Fl d Ar string +.Op Fl s +.Ar +.Sh DESCRIPTION +The +.Nm cut +utility selects portions of each line (as specified by +.Ar list ) +from each +.Ar file +(or the standard input by default), and writes them to the +standard output. +The items specified by +.Ar list +can be in terms of column position or in terms of fields delimited +by a special character. Column numbering starts from 1. +.Pp +.Ar List +is a comma or whitespace separated set of increasing numbers and/or +number ranges. +Number ranges consist of a number, a dash +.Pq Li \- , +and a second number +and select the fields or columns from the first number to the second, +inclusive. +Numbers or number ranges may be preceded by a dash, which selects all +fields or columns from 1 to the first number. +Numbers or number ranges may be followed by a dash, which selects all +fields or columns from the last number to the end of the line. +Numbers and number ranges may be repeated, overlapping, and in any order. +It is not an error to select fields or columns not present in the +input line. +.Pp +The options are as follows: +.Bl -tag -width Fl +.It Fl c Ar list +The +.Ar list +specifies character positions. +.It Fl d Ar string +Use the first character of +.Ar string +as the field delimiter character instead of the tab character. +.It Fl f Ar list +The +.Ar list +specifies fields, delimited in the input by a single tab character. +Output fields are separated by a single tab character. +.It Fl s +Suppresses lines with no field delimiter characters. +Unless specified, lines with no delimiters are passed through unmodified. +.El +.Pp +.Nm Cut +exits 0 on success, 1 if an error occurred. +.Sh SEE ALSO +.Xr paste 1 +.Sh STANDARDS +The +.Nm cut +utility is expected to conform to +.St -p1003.2 . diff --git a/usr.bin/cut/cut.c b/usr.bin/cut/cut.c new file mode 100644 index 0000000..25ffdd3 --- /dev/null +++ b/usr.bin/cut/cut.c @@ -0,0 +1,296 @@ +/* + * 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 and Marciano Pitargue. + * + * 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[] = "@(#)cut.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <ctype.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +int cflag; +char dchar; +int dflag; +int fflag; +int sflag; + +void c_cut __P((FILE *, char *)); +void err __P((const char *, ...)); +void f_cut __P((FILE *, char *)); +void get_list __P((char *)); +void usage __P((void)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + FILE *fp; + void (*fcn) __P((FILE *, char *)); + int ch; + + dchar = '\t'; /* default delimiter is \t */ + + while ((ch = getopt(argc, argv, "c:d:f:s")) != EOF) + switch(ch) { + case 'c': + fcn = c_cut; + get_list(optarg); + cflag = 1; + break; + case 'd': + dchar = *optarg; + dflag = 1; + break; + case 'f': + get_list(optarg); + fcn = f_cut; + fflag = 1; + break; + case 's': + sflag = 1; + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + if (fflag) { + if (cflag) + usage(); + } else if (!cflag || dflag || sflag) + usage(); + + if (*argv) + for (; *argv; ++argv) { + if (!(fp = fopen(*argv, "r"))) + err("%s: %s\n", *argv, strerror(errno)); + fcn(fp, *argv); + (void)fclose(fp); + } + else + fcn(stdin, "stdin"); + exit(0); +} + +int autostart, autostop, maxval; + +char positions[_POSIX2_LINE_MAX + 1]; + +void +get_list(list) + char *list; +{ + register int setautostart, start, stop; + register char *pos; + char *p; + + /* + * set a byte in the positions array to indicate if a field or + * column is to be selected; use +1, it's 1-based, not 0-based. + * This parser is less restrictive than the Draft 9 POSIX spec. + * POSIX doesn't allow lists that aren't in increasing order or + * overlapping lists. We also handle "-3-5" although there's no + * real reason too. + */ + for (; p = strtok(list, ", \t"); list = NULL) { + setautostart = start = stop = 0; + if (*p == '-') { + ++p; + setautostart = 1; + } + if (isdigit(*p)) { + start = stop = strtol(p, &p, 10); + if (setautostart && start > autostart) + autostart = start; + } + if (*p == '-') { + if (isdigit(p[1])) + stop = strtol(p + 1, &p, 10); + if (*p == '-') { + ++p; + if (!autostop || autostop > stop) + autostop = stop; + } + } + if (*p) + err("[-cf] list: illegal list value\n"); + if (!stop || !start) + err("[-cf] list: values may not include zero\n"); + if (stop > _POSIX2_LINE_MAX) + err("[-cf] list: %d too large (max %d)\n", + stop, _POSIX2_LINE_MAX); + if (maxval < stop) + maxval = stop; + for (pos = positions + start; start++ <= stop; *pos++ = 1); + } + + /* overlapping ranges */ + if (autostop && maxval > autostop) + maxval = autostop; + + /* set autostart */ + if (autostart) + memset(positions + 1, '1', autostart); +} + +/* ARGSUSED */ +void +c_cut(fp, fname) + FILE *fp; + char *fname; +{ + register int ch, col; + register char *pos; + + for (;;) { + pos = positions + 1; + for (col = maxval; col; --col) { + if ((ch = getc(fp)) == EOF) + return; + if (ch == '\n') + break; + if (*pos++) + (void)putchar(ch); + } + if (ch != '\n') + if (autostop) + while ((ch = getc(fp)) != EOF && ch != '\n') + (void)putchar(ch); + else + while ((ch = getc(fp)) != EOF && ch != '\n'); + (void)putchar('\n'); + } +} + +void +f_cut(fp, fname) + FILE *fp; + char *fname; +{ + register int ch, field, isdelim; + register char *pos, *p, sep; + int output; + char lbuf[_POSIX2_LINE_MAX + 1]; + + for (sep = dchar, output = 0; fgets(lbuf, sizeof(lbuf), fp);) { + for (isdelim = 0, p = lbuf;; ++p) { + if (!(ch = *p)) + err("%s: line too long.\n", fname); + /* this should work if newline is delimiter */ + if (ch == sep) + isdelim = 1; + if (ch == '\n') { + if (!isdelim && !sflag) + (void)printf("%s", lbuf); + break; + } + } + if (!isdelim) + continue; + + pos = positions + 1; + for (field = maxval, p = lbuf; field; --field, ++pos) { + if (*pos) { + if (output++) + (void)putchar(sep); + while ((ch = *p++) != '\n' && ch != sep) + (void)putchar(ch); + } else + while ((ch = *p++) != '\n' && ch != sep); + if (ch == '\n') + break; + } + if (ch != '\n') + if (autostop) { + if (output) + (void)putchar(sep); + for (; (ch = *p) != '\n'; ++p) + (void)putchar(ch); + } else + for (; (ch = *p) != '\n'; ++p); + (void)putchar('\n'); + } +} + +void +usage() +{ + (void)fprintf(stderr, +"usage:\tcut -c list [file1 ...]\n\tcut -f list [-s] [-d delim] [file ...]\n"); + exit(1); +} + +#if __STDC__ +#include <stdarg.h> +#else +#include <varargs.h> +#endif + +void +#if __STDC__ +err(const char *fmt, ...) +#else +err(fmt, va_alist) + char *fmt; + va_dcl +#endif +{ + va_list ap; +#if __STDC__ + va_start(ap, fmt); +#else + va_start(ap); +#endif + (void)fprintf(stderr, "cut: "); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + (void)fprintf(stderr, "\n"); + exit(1); + /* NOTREACHED */ +} |