337 lines
8.7 KiB
C
337 lines
8.7 KiB
C
/* $NetBSD: sort.c,v 1.26 2001/04/30 00:25:09 ross Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Peter McIlroy.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/* Sort sorts a file using an optional user-defined key.
|
|
* Sort uses radix sort for internal sorting, and allows
|
|
* a choice of merge sort and radix sort for external sorting.
|
|
*/
|
|
|
|
#include "sort.h"
|
|
#include "fsort.h"
|
|
#include "pathnames.h"
|
|
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1993\nThe Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
__RCSID("$NetBSD: sort.c,v 1.26 2001/04/30 00:25:09 ross Exp $");
|
|
__SCCSID("@(#)sort.c 8.1 (Berkeley) 6/6/93");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
|
|
#include <paths.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <locale.h>
|
|
|
|
int REC_D = '\n';
|
|
u_char d_mask[NBINS]; /* flags for rec_d, field_d, <blank> */
|
|
/*
|
|
* weight tables. Gweights is one of ascii, Rascii..
|
|
* modified to weight rec_d = 0 (or 255)
|
|
*/
|
|
u_char ascii[NBINS], Rascii[NBINS], RFtable[NBINS], Ftable[NBINS];
|
|
int SINGL_FLD = 0, SEP_FLAG = 0, UNIQUE = 0;
|
|
struct coldesc clist[(ND+1)*2];
|
|
int ncols = 0;
|
|
extern struct coldesc clist[(ND+1)*2];
|
|
extern int ncols;
|
|
|
|
/*
|
|
* Default to stable sort.
|
|
*/
|
|
int stable_sort = 1;
|
|
|
|
char toutpath[MAXPATHLEN];
|
|
|
|
const char *tmpdir; /* where temporary files should be put */
|
|
|
|
static void cleanup __P((void));
|
|
static void onsignal __P((int));
|
|
static void usage __P((const char *));
|
|
static void many_files __P((void));
|
|
|
|
int main __P((int argc, char **argv));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
get_func_t get;
|
|
int ch, i, stdinflag = 0, tmp = 0;
|
|
char cflag = 0, mflag = 0;
|
|
char *outfile, *outpath = 0;
|
|
struct field fldtab[ND+2], *ftpos;
|
|
struct filelist filelist;
|
|
FILE *outfp = NULL;
|
|
|
|
setlocale(LC_ALL, "");
|
|
|
|
memset(fldtab, 0, (ND+2)*sizeof(struct field));
|
|
memset(d_mask, 0, NBINS);
|
|
d_mask[REC_D = '\n'] = REC_D_F;
|
|
SINGL_FLD = SEP_FLAG = 0;
|
|
d_mask['\t'] = d_mask[' '] = BLANK | FLD_D;
|
|
ftpos = fldtab;
|
|
many_files();
|
|
|
|
fixit(&argc, argv);
|
|
if (!(tmpdir = getenv("TMPDIR")))
|
|
tmpdir = _PATH_TMP;
|
|
|
|
while ((ch = getopt(argc, argv, "bcdfik:mHno:rR:sSt:T:ux")) != -1) {
|
|
switch (ch) {
|
|
case 'b':
|
|
fldtab->flags |= BI | BT;
|
|
break;
|
|
case 'c':
|
|
cflag = 1;
|
|
break;
|
|
case 'd': case 'f': case 'i': case 'n': case 'r':
|
|
tmp |= optval(ch, 0);
|
|
if ((tmp & R) && (tmp & F))
|
|
fldtab->weights = RFtable;
|
|
else if (tmp & F)
|
|
fldtab->weights = Ftable;
|
|
else if (tmp & R)
|
|
fldtab->weights = Rascii;
|
|
fldtab->flags |= tmp;
|
|
break;
|
|
case 'H':
|
|
PANIC = 0;
|
|
break;
|
|
case 'k':
|
|
setfield(optarg, ++ftpos, fldtab->flags);
|
|
break;
|
|
case 'm':
|
|
mflag = 1;
|
|
break;
|
|
case 'o':
|
|
outpath = optarg;
|
|
break;
|
|
case 's':
|
|
/* for GNU sort compatibility (this is our default) */
|
|
stable_sort = 1;
|
|
break;
|
|
case 'S':
|
|
stable_sort = 0;
|
|
break;
|
|
case 't':
|
|
if (SEP_FLAG)
|
|
usage("multiple field delimiters");
|
|
SEP_FLAG = 1;
|
|
d_mask[' '] &= ~FLD_D;
|
|
d_mask['\t'] &= ~FLD_D;
|
|
d_mask[(u_char)*optarg] |= FLD_D;
|
|
if (d_mask[(u_char)*optarg] & REC_D_F)
|
|
errx(2, "record/field delimiter clash");
|
|
break;
|
|
case 'R':
|
|
if (REC_D != '\n')
|
|
usage("multiple record delimiters");
|
|
if ('\n' == (REC_D = *optarg))
|
|
break;
|
|
d_mask['\n'] = d_mask[' '];
|
|
d_mask[REC_D] = REC_D_F;
|
|
break;
|
|
case 'T':
|
|
/* -T tmpdir */
|
|
tmpdir = optarg;
|
|
break;
|
|
case 'u':
|
|
UNIQUE = 1;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage(NULL);
|
|
}
|
|
}
|
|
if (cflag && argc > optind+1)
|
|
errx(2, "too many input files for -c option");
|
|
if (argc - 2 > optind && !strcmp(argv[argc-2], "-o")) {
|
|
outpath = argv[argc-1];
|
|
argc -= 2;
|
|
}
|
|
if (mflag && argc - optind > (MAXFCT - (16+1))*16)
|
|
errx(2, "too many input files for -m option");
|
|
for (i = optind; i < argc; i++) {
|
|
/* allow one occurrence of /dev/stdin */
|
|
if (!strcmp(argv[i], "-") || !strcmp(argv[i], _PATH_STDIN)) {
|
|
if (stdinflag)
|
|
warnx("ignoring extra \"%s\" in file list",
|
|
argv[i]);
|
|
else
|
|
stdinflag = 1;
|
|
|
|
/* change to /dev/stdin if '-' */
|
|
if (argv[i][0] == '-')
|
|
argv[i] = strdup(_PATH_STDIN);
|
|
|
|
} else if ((ch = access(argv[i], R_OK)))
|
|
err(2, "%s", argv[i]);
|
|
}
|
|
if (!(fldtab->flags & (I|D|N) || fldtab[1].icol.num)) {
|
|
SINGL_FLD = 1;
|
|
fldtab[0].icol.num = 1;
|
|
} else {
|
|
if (!fldtab[1].icol.num) {
|
|
fldtab[0].flags &= ~(BI|BT);
|
|
setfield("1", ++ftpos, fldtab->flags);
|
|
}
|
|
fldreset(fldtab);
|
|
fldtab[0].flags &= ~F;
|
|
}
|
|
settables(fldtab[0].flags);
|
|
num_init();
|
|
fldtab->weights = gweights;
|
|
if (optind == argc) {
|
|
static const char * const names[] = { _PATH_STDIN, NULL };
|
|
|
|
filelist.names = names;
|
|
optind--;
|
|
} else
|
|
filelist.names = (const char * const *) &argv[optind];
|
|
|
|
if (SINGL_FLD)
|
|
get = makeline;
|
|
else
|
|
get = makekey;
|
|
|
|
if (cflag) {
|
|
order(&filelist, get, fldtab);
|
|
/* NOT REACHED */
|
|
}
|
|
if (!outpath) {
|
|
(void)snprintf(toutpath,
|
|
sizeof(toutpath), "%sstdout", _PATH_DEV);
|
|
outfile = outpath = toutpath;
|
|
outfp = stdout;
|
|
} else if (!(ch = access(outpath, 0)) &&
|
|
strncmp(_PATH_DEV, outpath, 5)) {
|
|
static const struct sigaction act =
|
|
{ { onsignal }, SA_RESTART | SA_RESETHAND, { { 0 } } };
|
|
static const int sigtable[] = {SIGHUP, SIGINT, SIGPIPE,
|
|
SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF, 0};
|
|
int outfd;
|
|
errno = 0;
|
|
if (access(outpath, W_OK))
|
|
err(2, "%s", outpath);
|
|
(void)snprintf(toutpath, sizeof(toutpath), "%sXXXXXX",
|
|
outpath);
|
|
if ((outfd = mkstemp(toutpath)) == -1)
|
|
err(2, "Cannot create temporary file `%s'", toutpath);
|
|
if ((outfp = fdopen(outfd, "w")) == NULL)
|
|
err(2, "Cannot open temporary file `%s'", toutpath);
|
|
outfile = toutpath;
|
|
(void)atexit(cleanup);
|
|
for (i = 0; sigtable[i]; ++i) /* always unlink toutpath */
|
|
sigaction(sigtable[i], &act, 0);
|
|
} else
|
|
outfile = outpath;
|
|
|
|
if (outfp == NULL && (outfp = fopen(outfile, "w")) == NULL)
|
|
err(2, "output file %s", outfile);
|
|
|
|
if (mflag) {
|
|
fmerge(-1, 0, &filelist, argc-optind, get, outfp, putline,
|
|
fldtab);
|
|
} else
|
|
fsort(-1, 0, 0, &filelist, argc-optind, outfp, fldtab);
|
|
|
|
if (outfile != outpath) {
|
|
if (access(outfile, 0))
|
|
err(2, "%s", outfile);
|
|
(void)unlink(outpath);
|
|
if (link(outfile, outpath))
|
|
err(2, "cannot link %s: output left in %s",
|
|
outpath, outfile);
|
|
(void)unlink(outfile);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
onsignal(sig)
|
|
int sig __unused;
|
|
{
|
|
cleanup();
|
|
}
|
|
|
|
static void
|
|
cleanup()
|
|
{
|
|
if (toutpath[0])
|
|
(void)unlink(toutpath);
|
|
}
|
|
|
|
static void
|
|
usage(msg)
|
|
const char *msg;
|
|
{
|
|
if (msg != NULL)
|
|
(void)fprintf(stderr, "sort: %s\n", msg);
|
|
(void)fprintf(stderr, "usage: [-o output] [-cmubdfinrsS] [-t char] ");
|
|
(void)fprintf(stderr, "[-R char] [-k keydef] ... [files]\n");
|
|
exit(2);
|
|
}
|
|
|
|
static void
|
|
many_files()
|
|
{
|
|
#if 0
|
|
struct rlimit rlp_many_files[1];
|
|
|
|
if (getrlimit(RLIMIT_NOFILE, rlp_many_files) == 0) {
|
|
rlp_many_files->rlim_cur = rlp_many_files->rlim_max;
|
|
setrlimit(RLIMIT_NOFILE, rlp_many_files);
|
|
}
|
|
#endif
|
|
}
|