4.4BSD/usr/src/contrib/sort/sort.c
/*-
* 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.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)sort.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
/* 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"
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.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)
*/
extern u_char gweights[NBINS];
u_char ascii[NBINS], Rascii[NBINS], RFtable[NBINS], Ftable[NBINS];
/*
* masks of ignored characters. Alltable is 256 ones
*/
u_char dtable[NBINS], itable[NBINS], alltable[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;
char devstdin[] = _PATH_STDIN;
char toutpath[_POSIX_PATH_MAX];
static void cleanup __P((void));
static void onsig __P((int));
static void usage __P((char *));
int
main(argc, argv)
int argc;
char *argv[];
{
extern int optind;
extern char *optarg;
int (*get)();
int ch, i, stdinflag = 0, tmp = 0;
char cflag = 0, mflag = 0, nflag = 0;
char *outfile, *outpath = 0;
struct field fldtab[ND+2], *ftpos;
union f_handle filelist;
FILE *outfd;
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;
fixit(&argc, argv);
while ((ch = getopt(argc, argv, "bcdfik:mHno:rt:T:ux")) != EOF) {
switch (ch) {
case 'b': fldtab->flags |= BI | BT;
break;
case 'd':
case 'i':
case 'f':
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 'o':
outpath = optarg;
break;
case 'n':
nflag = 1;
setfield("1n", ++ftpos, fldtab->flags&(~R));
break;
case 'k':
setfield(optarg, ++ftpos, fldtab->flags);
break;
case 't':
if (SEP_FLAG)
usage("multiple field delimiters");
SEP_FLAG = 1;
d_mask[' '] &= ~FLD_D;
d_mask['\t'] &= ~FLD_D;
d_mask[*optarg] |= FLD_D;
if (d_mask[*optarg] & REC_D_F)
err(2, "record/field delimiter clash");
break;
case 'T':
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 'u':
UNIQUE = 1;
break;
case 'c':
cflag = 1;
break;
case 'm':
mflag = 1;
break;
case 'H':
PANIC = 0;
break;
case '?':
default: usage("");
}
}
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], devstdin)) {
if (stdinflag)
warnx("ignoring extra \"%s\" in file list",
argv[i]);
else {
stdinflag = 1;
argv[i] = devstdin;
}
} else if (ch = access(argv[i], R_OK))
err(2, "%s", argv[i]);
}
if (!(fldtab->flags & (I|D) || 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);
}
if (nflag)
fldtab[1].flags |= fldtab->flags;
fldreset(fldtab);
fldtab[0].flags &= ~F;
}
settables(fldtab[0].flags);
num_init();
fldtab->weights = gweights;
if (optind == argc)
argv[--optind] = devstdin;
filelist.names = 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;
} else if (!(ch = access(outpath, 0)) &&
strncmp(_PATH_DEV, outpath, 5)) {
struct sigaction act = {0, SIG_BLOCK, 6};
int sigtable[] = {SIGHUP, SIGINT, SIGPIPE, SIGXCPU, SIGXFSZ,
SIGVTALRM, SIGPROF, 0};
errno = 0;
if (access(outpath, W_OK))
err(2, "%s", outpath);
act.sa_handler = cleanup;
(void)snprintf(toutpath, sizeof(toutpath), "%sXXXX", outpath);
outfile = mktemp(toutpath);
if (!outfile)
err(2, "%s", toutpath);
(void)atexit(cleanup);
for (i = 0; sigtable[i]; ++i) /* always unlink toutpath */
sigaction(sigtable[i], &act, 0);
} else outfile = outpath;
if (!(outfd = fopen(outfile, "w")))
err(2, "%s", outfile);
if (mflag)
fmerge(-1, filelist, argc-optind, get, outfd, putline, fldtab);
else
fsort(-1, 0, filelist, argc-optind, outfd, 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
onsig(s)
int s;
{
cleanup();
exit(2); /* return 2 on error/interrupt */
}
static void
cleanup()
{
if (toutpath[0])
(void)unlink(toutpath);
}
static void
usage(msg)
char *msg;
{
if (msg)
(void)fprintf(stderr, "sort: %s\n", msg);
(void)fprintf(stderr, "usage: [-o output] [-cmubdfinr] [-t char] ");
(void)fprintf(stderr, "[-T char] [-k keydef] ... [files]\n");
exit(2);
}