csplit: Remove OpenB*OS version
* Was replaced by coreutils csplit, and options are the same.
This commit is contained in:
Alexander von Gluck IV
@@ -32,7 +32,6 @@ StdBinCommands
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cal.c
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cal.c
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chop.c
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chop.c
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clear.c
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clear.c
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# csplit.c
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driveinfo.c
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driveinfo.c
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error.c
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error.c
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fortune.c
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fortune.c
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@@ -1,483 +0,0 @@
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/*-
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* Copyright (c) 2002 Tim J. Robbins.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* csplit -- split files based on context
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*
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* This utility splits its input into numbered output files by line number
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* or by a regular expression. Regular expression matches have an optional
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* offset with them, allowing the split to occur a specified number of
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* lines before or after the match.
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*
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* To handle negative offsets, we stop reading when the match occurs and
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* store the offset that the file should have been split at, then use
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* this output file as input until all the "overflowed" lines have been read.
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* The file is then closed and truncated to the correct length.
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*
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* We assume that the output files can be seeked upon (ie. they cannot be
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* symlinks to named pipes or character devices), but make no such
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* assumption about the input.
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*/
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/*
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Ported to OpenBeOS by Sikosis - [email protected]
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(C)2004 OpenBeOS - Released under the MIT License
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*/
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//
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#define REG_BASIC 0
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//#include <sys/cdefs.h>
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//__FBSDID("$FreeBSD: /repoman/r/ncvs/src/usr.bin/csplit/csplit.c,v 1.7 2002/07/28 15:41:15 dwmalone Exp $");
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#include <sys/types.h>
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#include <ctype.h>
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//#include <err.h>
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#include <errno.h>
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#include <limits.h>
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#include <locale.h>
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#include <regex.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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void cleanup(void);
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void do_lineno(const char *);
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void do_rexp(const char *);
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char *getline(void);
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void handlesig(int);
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FILE *newfile(void);
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void toomuch(FILE *, long);
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void usage(void);
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/*
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* Command line options
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*/
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const char *prefix; /* File name prefix */
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long sufflen; /* Number of decimal digits for suffix */
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int sflag; /* Suppress output of file names */
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int kflag; /* Keep output if error occurs */
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/*
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* Other miscellaneous globals (XXX too many)
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*/
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long lineno; /* Current line number in input file */
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long reps; /* Number of repetitions for this pattern */
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long nfiles; /* Number of files output so far */
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long maxfiles; /* Maximum number of files we can create */
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char currfile[PATH_MAX]; /* Current output file */
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const char *infn; /* Name of the input file */
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FILE *infile; /* Input file handle */
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FILE *overfile; /* Overflow file for toomuch() */
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off_t truncofs; /* Offset this file should be truncated at */
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int doclean; /* Should cleanup() remove output? */
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int
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main(int argc, char *argv[])
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{
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struct sigaction sa;
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long i;
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int ch;
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const char *expr;
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char *ep, *p;
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FILE *ofp;
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setlocale(LC_ALL, "");
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kflag = sflag = 0;
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prefix = "xx";
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sufflen = 2;
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while ((ch = getopt(argc, argv, "ksf:n:")) > 0) {
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switch (ch) {
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case 'f':
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prefix = optarg;
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break;
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case 'k':
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kflag = 1;
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break;
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case 'n':
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errno = 0;
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sufflen = strtol(optarg, &ep, 10);
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if (sufflen <= 0 || *ep != '\0' || errno != 0)
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errx(1, "%s: bad suffix length", optarg);
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break;
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case 's':
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sflag = 1;
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break;
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default:
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usage();
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/*NOTREACHED*/
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}
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}
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if (sufflen + strlen(prefix) >= PATH_MAX)
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errx(1, "name too long");
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argc -= optind;
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argv += optind;
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if ((infn = *argv++) == NULL)
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usage();
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if (strcmp(infn, "-") == 0) {
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infile = stdin;
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infn = "stdin";
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} else if ((infile = fopen(infn, "r")) == NULL)
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err(1, "%s", infn);
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if (!kflag) {
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doclean = 1;
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atexit(cleanup);
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sa.sa_flags = 0;
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sa.sa_handler = handlesig;
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGHUP);
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sigaddset(&sa.sa_mask, SIGINT);
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sigaddset(&sa.sa_mask, SIGTERM);
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sigaction(SIGHUP, &sa, NULL);
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sigaction(SIGINT, &sa, NULL);
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sigaction(SIGTERM, &sa, NULL);
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}
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lineno = 0;
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nfiles = 0;
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truncofs = 0;
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overfile = NULL;
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/* Ensure 10^sufflen < LONG_MAX. */
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for (maxfiles = 1, i = 0; i < sufflen; i++) {
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if (maxfiles > LONG_MAX / 10)
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errx(1, "%ld: suffix too long (limit %ld)",
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sufflen, i);
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maxfiles *= 10;
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}
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/* Create files based on supplied patterns. */
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while (nfiles < maxfiles - 1 && (expr = *argv++) != NULL) {
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/* Look ahead & see if this pattern has any repetitions. */
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if (*argv != NULL && **argv == '{') {
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errno = 0;
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reps = strtol(*argv + 1, &ep, 10);
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if (reps < 0 || *ep != '}' || errno != 0)
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errx(1, "%s: bad repetition count", *argv + 1);
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argv++;
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} else
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reps = 0;
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if (*expr == '/' || *expr == '%') {
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do
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do_rexp(expr);
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while (reps-- != 0 && nfiles < maxfiles - 1);
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} else if (isdigit((unsigned char)*expr))
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do_lineno(expr);
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else
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errx(1, "%s: unrecognised pattern", expr);
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}
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/* Copy the rest into a new file. */
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if (!feof(infile)) {
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ofp = newfile();
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while ((p = getline()) != NULL && fputs(p, ofp) == 0)
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;
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if (!sflag)
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printf("%jd\n", (intmax_t)ftello(ofp));
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if (fclose(ofp) != 0)
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err(1, "%s", currfile);
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}
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toomuch(NULL, 0);
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doclean = 0;
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return (0);
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}
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void
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usage(void)
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{
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fprintf(stderr,
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"usage: csplit [-ks] [-f prefix] [-n number] file args ...\n");
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exit(1);
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}
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void
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//handlesig(int sig __unused) // parse error before `__unused'
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handlesig(int sig)
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{
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const char msg[] = "csplit: caught signal, cleaning up\n";
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write(STDERR_FILENO, msg, sizeof(msg) - 1);
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cleanup();
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_exit(2);
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}
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/* Create a new output file. */
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FILE *
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newfile(void)
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{
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FILE *fp;
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if ((size_t)snprintf(currfile, sizeof(currfile), "%s%0*ld", prefix,
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(int)sufflen, nfiles) >= sizeof(currfile)) {
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errno = ENAMETOOLONG;
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err(1, NULL);
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}
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if ((fp = fopen(currfile, "w+")) == NULL)
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err(1, "%s", currfile);
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nfiles++;
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return (fp);
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}
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/* Remove partial output, called before exiting. */
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void
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cleanup(void)
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{
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char fnbuf[PATH_MAX];
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long i;
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if (!doclean)
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return;
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/*
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* NOTE: One cannot portably assume to be able to call snprintf()
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* from inside a signal handler. It does, however, appear to be safe
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* to do on FreeBSD. The solution to this problem is worse than the
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* problem itself.
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*/
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for (i = 0; i < nfiles; i++) {
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snprintf(fnbuf, sizeof(fnbuf), "%s%0*ld", prefix,
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(int)sufflen, i);
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unlink(fnbuf);
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}
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}
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/* Read a line from the input into a static buffer. */
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char *
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getline(void)
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{
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//static char lbuf[LINE_MAX]; // `LINE_MAX' undeclared (first use in this function)
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static char lbuf[255]; // assume 255 - please fix if someone knows
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FILE *src;
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src = overfile != NULL ? overfile : infile;
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again: if (fgets(lbuf, sizeof(lbuf), src) == NULL) {
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if (src == overfile) {
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src = infile;
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goto again;
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}
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return (NULL);
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}
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if (ferror(src))
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err(1, "%s", infn);
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lineno++;
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return (lbuf);
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}
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/* Conceptually rewind the input (as obtained by getline()) back `n' lines. */
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void
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toomuch(FILE *ofp, long n)
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{
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char buf[BUFSIZ];
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size_t i, nread;
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if (overfile != NULL) {
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/*
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* Truncate the previous file we overflowed into back to
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* the correct length, close it.
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*/
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if (fflush(overfile) != 0)
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err(1, "overflow");
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if (ftruncate(fileno(overfile), truncofs) != 0)
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err(1, "overflow");
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if (fclose(overfile) != 0)
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err(1, "overflow");
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overfile = NULL;
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}
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if (n == 0)
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/* Just tidying up */
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return;
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lineno -= n;
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/*
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* Wind the overflow file backwards to `n' lines before the
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* current one.
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*/
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do {
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||||||
if (ftello(ofp) < (off_t)sizeof(buf))
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rewind(ofp);
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else
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fseek(ofp, -(long)sizeof(buf), SEEK_CUR);
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if (ferror(ofp))
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errx(1, "%s: can't seek", currfile);
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||||||
if ((nread = fread(buf, 1, sizeof(buf), ofp)) == 0)
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||||||
errx(1, "can't read overflowed output");
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||||||
if (fseek(ofp, -(long)nread, SEEK_CUR) != 0)
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err(1, "%s", currfile);
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for (i = 1; i <= nread; i++)
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||||||
if (buf[nread - i] == '\n' && n-- == 0)
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break;
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||||||
if (ftello(ofp) == 0)
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break;
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} while (n > 0);
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if (fseek(ofp, nread - i + 1, SEEK_CUR) != 0)
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err(1, "%s", currfile);
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||||||
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/*
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||||||
* getline() will read from here. Next call will truncate to
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||||||
* truncofs in this file.
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*/
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overfile = ofp;
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||||||
truncofs = ftello(overfile);
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}
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/* Handle splits for /regexp/ and %regexp% patterns. */
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||||||
void
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||||||
do_rexp(const char *expr)
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|
||||||
{
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||||||
regex_t cre;
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||||||
intmax_t nwritten;
|
|
||||||
long ofs;
|
|
||||||
int first;
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char *ecopy, *ep, *p, *pofs, *re;
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||||||
FILE *ofp;
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||||||
|
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||||||
if ((ecopy = strdup(expr)) == NULL)
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||||||
err(1, "strdup");
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||||||
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||||||
re = ecopy + 1;
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|
||||||
if ((pofs = strrchr(ecopy, *expr)) == NULL || pofs[-1] == '\\')
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|
||||||
errx(1, "%s: missing trailing %c", expr, *expr);
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|
||||||
*pofs++ = '\0';
|
|
||||||
|
|
||||||
if (*pofs != '\0') {
|
|
||||||
errno = 0;
|
|
||||||
ofs = strtol(pofs, &ep, 10);
|
|
||||||
if (*ep != '\0' || errno != 0)
|
|
||||||
errx(1, "%s: bad offset", pofs);
|
|
||||||
} else
|
|
||||||
ofs = 0;
|
|
||||||
|
|
||||||
if (regcomp(&cre, re, REG_BASIC|REG_NOSUB) != 0)
|
|
||||||
errx(1, "%s: bad regular expression", re);
|
|
||||||
|
|
||||||
if (*expr == '/')
|
|
||||||
/* /regexp/: Save results to a file. */
|
|
||||||
ofp = newfile();
|
|
||||||
else {
|
|
||||||
/* %regexp%: Make a temporary file for overflow. */
|
|
||||||
if ((ofp = tmpfile()) == NULL)
|
|
||||||
err(1, "tmpfile");
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Read and output lines until we get a match. */
|
|
||||||
first = 1;
|
|
||||||
while ((p = getline()) != NULL) {
|
|
||||||
if (fputs(p, ofp) != 0)
|
|
||||||
break;
|
|
||||||
if (!first && regexec(&cre, p, 0, NULL, 0) == 0)
|
|
||||||
break;
|
|
||||||
first = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (p == NULL)
|
|
||||||
errx(1, "%s: no match", re);
|
|
||||||
|
|
||||||
if (ofs <= 0) {
|
|
||||||
/*
|
|
||||||
* Negative (or zero) offset: throw back any lines we should
|
|
||||||
* not have read yet.
|
|
||||||
*/
|
|
||||||
if (p != NULL) {
|
|
||||||
toomuch(ofp, -ofs + 1);
|
|
||||||
nwritten = (intmax_t)truncofs;
|
|
||||||
} else
|
|
||||||
nwritten = (intmax_t)ftello(ofp);
|
|
||||||
} else {
|
|
||||||
/*
|
|
||||||
* Positive offset: copy the requested number of lines
|
|
||||||
* after the match.
|
|
||||||
*/
|
|
||||||
while (--ofs > 0 && (p = getline()) != NULL)
|
|
||||||
fputs(p, ofp);
|
|
||||||
toomuch(NULL, 0);
|
|
||||||
nwritten = (intmax_t)ftello(ofp);
|
|
||||||
if (fclose(ofp) != 0)
|
|
||||||
err(1, "%s", currfile);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!sflag && *expr == '/')
|
|
||||||
printf("%jd\n", nwritten);
|
|
||||||
|
|
||||||
regfree(&cre);
|
|
||||||
free(ecopy);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Handle splits based on line number. */
|
|
||||||
void
|
|
||||||
do_lineno(const char *expr)
|
|
||||||
{
|
|
||||||
long lastline, tgtline;
|
|
||||||
char *ep, *p;
|
|
||||||
FILE *ofp;
|
|
||||||
|
|
||||||
errno = 0;
|
|
||||||
tgtline = strtol(expr, &ep, 10);
|
|
||||||
if (tgtline <= 0 || errno != 0 || *ep != '\0')
|
|
||||||
errx(1, "%s: bad line number", expr);
|
|
||||||
lastline = tgtline;
|
|
||||||
if (lastline <= lineno)
|
|
||||||
errx(1, "%s: can't go backwards", expr);
|
|
||||||
|
|
||||||
while (nfiles < maxfiles - 1) {
|
|
||||||
ofp = newfile();
|
|
||||||
while (lineno + 1 != lastline) {
|
|
||||||
if ((p = getline()) == NULL)
|
|
||||||
errx(1, "%ld: out of range", lastline);
|
|
||||||
if (fputs(p, ofp) != 0)
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
if (!sflag)
|
|
||||||
printf("%jd\n", (intmax_t)ftello(ofp));
|
|
||||||
if (fclose(ofp) != 0)
|
|
||||||
err(1, "%s", currfile);
|
|
||||||
if (reps-- == 0)
|
|
||||||
break;
|
|
||||||
lastline += tgtline;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
Reference in New Issue
Block a user