8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
674 lines
17 KiB
C
674 lines
17 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Steve Hayman of the Computer Science Department, Indiana University,
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* Michiro Hikida and David Goodenough.
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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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1991, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)join.c 8.6 (Berkeley) 5/4/95";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.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 <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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#include <wchar.h>
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/*
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* There's a structure per input file which encapsulates the state of the
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* file. We repeatedly read lines from each file until we've read in all
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* the consecutive lines from the file with a common join field. Then we
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* compare the set of lines with an equivalent set from the other file.
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*/
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typedef struct {
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char *line; /* line */
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u_long linealloc; /* line allocated count */
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char **fields; /* line field(s) */
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u_long fieldcnt; /* line field(s) count */
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u_long fieldalloc; /* line field(s) allocated count */
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} LINE;
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typedef struct {
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FILE *fp; /* file descriptor */
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u_long joinf; /* join field (-1, -2, -j) */
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int unpair; /* output unpairable lines (-a) */
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u_long number; /* 1 for file 1, 2 for file 2 */
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LINE *set; /* set of lines with same field */
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int pushbool; /* if pushback is set */
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u_long pushback; /* line on the stack */
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u_long setcnt; /* set count */
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u_long setalloc; /* set allocated count */
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} INPUT;
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static INPUT input1 = { NULL, 0, 0, 1, NULL, 0, 0, 0, 0 },
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input2 = { NULL, 0, 0, 2, NULL, 0, 0, 0, 0 };
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typedef struct {
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u_long filenum; /* file number */
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u_long fieldno; /* field number */
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} OLIST;
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static OLIST *olist; /* output field list */
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static u_long olistcnt; /* output field list count */
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static u_long olistalloc; /* output field allocated count */
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static int joinout = 1; /* show lines with matched join fields (-v) */
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static int needsep; /* need separator character */
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static int spans = 1; /* span multiple delimiters (-t) */
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static char *empty; /* empty field replacement string (-e) */
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static wchar_t default_tabchar[] = L" \t";
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static wchar_t *tabchar = default_tabchar; /* delimiter characters (-t) */
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static int cmp(LINE *, u_long, LINE *, u_long);
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static void fieldarg(char *);
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static void joinlines(INPUT *, INPUT *);
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static int mbscoll(const char *, const char *);
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static char *mbssep(char **, const wchar_t *);
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static void obsolete(char **);
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static void outfield(LINE *, u_long, int);
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static void outoneline(INPUT *, LINE *);
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static void outtwoline(INPUT *, LINE *, INPUT *, LINE *);
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static void slurp(INPUT *);
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static wchar_t *towcs(const char *);
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static void usage(void);
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int
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main(int argc, char *argv[])
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{
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INPUT *F1, *F2;
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int aflag, ch, cval, vflag;
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char *end;
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setlocale(LC_ALL, "");
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F1 = &input1;
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F2 = &input2;
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aflag = vflag = 0;
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obsolete(argv);
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while ((ch = getopt(argc, argv, "\01a:e:j:1:2:o:t:v:")) != -1) {
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switch (ch) {
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case '\01': /* See comment in obsolete(). */
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aflag = 1;
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F1->unpair = F2->unpair = 1;
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break;
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case '1':
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if ((F1->joinf = strtol(optarg, &end, 10)) < 1)
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errx(1, "-1 option field number less than 1");
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if (*end)
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errx(1, "illegal field number -- %s", optarg);
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--F1->joinf;
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break;
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case '2':
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if ((F2->joinf = strtol(optarg, &end, 10)) < 1)
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errx(1, "-2 option field number less than 1");
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if (*end)
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errx(1, "illegal field number -- %s", optarg);
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--F2->joinf;
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break;
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case 'a':
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aflag = 1;
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switch(strtol(optarg, &end, 10)) {
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case 1:
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F1->unpair = 1;
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break;
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case 2:
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F2->unpair = 1;
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break;
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default:
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errx(1, "-a option file number not 1 or 2");
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break;
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}
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if (*end)
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errx(1, "illegal file number -- %s", optarg);
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break;
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case 'e':
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empty = optarg;
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break;
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case 'j':
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if ((F1->joinf = F2->joinf =
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strtol(optarg, &end, 10)) < 1)
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errx(1, "-j option field number less than 1");
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if (*end)
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errx(1, "illegal field number -- %s", optarg);
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--F1->joinf;
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--F2->joinf;
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break;
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case 'o':
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fieldarg(optarg);
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break;
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case 't':
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spans = 0;
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if (mbrtowc(&tabchar[0], optarg, MB_LEN_MAX, NULL) !=
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strlen(optarg))
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errx(1, "illegal tab character specification");
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tabchar[1] = L'\0';
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break;
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case 'v':
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vflag = 1;
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joinout = 0;
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switch (strtol(optarg, &end, 10)) {
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case 1:
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F1->unpair = 1;
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break;
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case 2:
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F2->unpair = 1;
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break;
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default:
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errx(1, "-v option file number not 1 or 2");
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break;
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}
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if (*end)
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errx(1, "illegal file number -- %s", optarg);
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (aflag && vflag)
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errx(1, "the -a and -v options are mutually exclusive");
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if (argc != 2)
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usage();
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/* Open the files; "-" means stdin. */
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if (!strcmp(*argv, "-"))
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F1->fp = stdin;
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else if ((F1->fp = fopen(*argv, "r")) == NULL)
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err(1, "%s", *argv);
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++argv;
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if (!strcmp(*argv, "-"))
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F2->fp = stdin;
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else if ((F2->fp = fopen(*argv, "r")) == NULL)
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err(1, "%s", *argv);
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if (F1->fp == stdin && F2->fp == stdin)
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errx(1, "only one input file may be stdin");
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slurp(F1);
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slurp(F2);
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while (F1->setcnt && F2->setcnt) {
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cval = cmp(F1->set, F1->joinf, F2->set, F2->joinf);
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if (cval == 0) {
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/* Oh joy, oh rapture, oh beauty divine! */
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if (joinout)
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joinlines(F1, F2);
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slurp(F1);
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slurp(F2);
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} else if (cval < 0) {
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/* File 1 takes the lead... */
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if (F1->unpair)
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joinlines(F1, NULL);
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slurp(F1);
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} else {
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/* File 2 takes the lead... */
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if (F2->unpair)
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joinlines(F2, NULL);
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slurp(F2);
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}
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}
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/*
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* Now that one of the files is used up, optionally output any
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* remaining lines from the other file.
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*/
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if (F1->unpair)
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while (F1->setcnt) {
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joinlines(F1, NULL);
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slurp(F1);
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}
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if (F2->unpair)
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while (F2->setcnt) {
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joinlines(F2, NULL);
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slurp(F2);
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}
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exit(0);
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}
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static void
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slurp(INPUT *F)
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{
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LINE *lp, *lastlp, tmp;
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size_t len;
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int cnt;
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char *bp, *fieldp;
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/*
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* Read all of the lines from an input file that have the same
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* join field.
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*/
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F->setcnt = 0;
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for (lastlp = NULL;; ++F->setcnt) {
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/*
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* If we're out of space to hold line structures, allocate
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* more. Initialize the structure so that we know that this
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* is new space.
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*/
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if (F->setcnt == F->setalloc) {
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cnt = F->setalloc;
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F->setalloc += 50;
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if ((F->set = realloc(F->set,
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F->setalloc * sizeof(LINE))) == NULL)
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err(1, NULL);
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memset(F->set + cnt, 0, 50 * sizeof(LINE));
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/* re-set lastlp in case it moved */
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if (lastlp != NULL)
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lastlp = &F->set[F->setcnt - 1];
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}
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/*
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* Get any pushed back line, else get the next line. Allocate
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* space as necessary. If taking the line from the stack swap
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* the two structures so that we don't lose space allocated to
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* either structure. This could be avoided by doing another
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* level of indirection, but it's probably okay as is.
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*/
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lp = &F->set[F->setcnt];
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if (F->setcnt)
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lastlp = &F->set[F->setcnt - 1];
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if (F->pushbool) {
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tmp = F->set[F->setcnt];
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F->set[F->setcnt] = F->set[F->pushback];
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F->set[F->pushback] = tmp;
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F->pushbool = 0;
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continue;
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}
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if ((bp = fgetln(F->fp, &len)) == NULL)
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return;
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if (lp->linealloc <= len + 1) {
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lp->linealloc += MAX(100, len + 1 - lp->linealloc);
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if ((lp->line =
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realloc(lp->line, lp->linealloc)) == NULL)
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err(1, NULL);
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}
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memmove(lp->line, bp, len);
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/* Replace trailing newline, if it exists. */
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if (bp[len - 1] == '\n')
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lp->line[len - 1] = '\0';
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else
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lp->line[len] = '\0';
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bp = lp->line;
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/* Split the line into fields, allocate space as necessary. */
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lp->fieldcnt = 0;
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while ((fieldp = mbssep(&bp, tabchar)) != NULL) {
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if (spans && *fieldp == '\0')
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continue;
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if (lp->fieldcnt == lp->fieldalloc) {
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lp->fieldalloc += 50;
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if ((lp->fields = realloc(lp->fields,
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lp->fieldalloc * sizeof(char *))) == NULL)
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err(1, NULL);
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}
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lp->fields[lp->fieldcnt++] = fieldp;
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}
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/* See if the join field value has changed. */
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if (lastlp != NULL && cmp(lp, F->joinf, lastlp, F->joinf)) {
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F->pushbool = 1;
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F->pushback = F->setcnt;
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break;
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}
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}
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}
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static char *
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mbssep(char **stringp, const wchar_t *delim)
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{
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char *s, *tok;
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const wchar_t *spanp;
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wchar_t c, sc;
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size_t n;
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if ((s = *stringp) == NULL)
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return (NULL);
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for (tok = s;;) {
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n = mbrtowc(&c, s, MB_LEN_MAX, NULL);
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if (n == (size_t)-1 || n == (size_t)-2)
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errc(1, EILSEQ, NULL); /* XXX */
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s += n;
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spanp = delim;
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do {
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if ((sc = *spanp++) == c) {
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if (c == 0)
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s = NULL;
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else
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s[-n] = '\0';
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*stringp = s;
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return (tok);
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}
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} while (sc != 0);
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}
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}
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static int
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cmp(LINE *lp1, u_long fieldno1, LINE *lp2, u_long fieldno2)
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{
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if (lp1->fieldcnt <= fieldno1)
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return (lp2->fieldcnt <= fieldno2 ? 0 : 1);
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if (lp2->fieldcnt <= fieldno2)
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return (-1);
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return (mbscoll(lp1->fields[fieldno1], lp2->fields[fieldno2]));
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}
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static int
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mbscoll(const char *s1, const char *s2)
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{
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wchar_t *w1, *w2;
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int ret;
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if (MB_CUR_MAX == 1)
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return (strcoll(s1, s2));
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if ((w1 = towcs(s1)) == NULL || (w2 = towcs(s2)) == NULL)
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err(1, NULL); /* XXX */
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ret = wcscoll(w1, w2);
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free(w1);
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free(w2);
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return (ret);
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}
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static wchar_t *
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towcs(const char *s)
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{
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wchar_t *wcs;
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size_t n;
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if ((n = mbsrtowcs(NULL, &s, 0, NULL)) == (size_t)-1)
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return (NULL);
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if ((wcs = malloc((n + 1) * sizeof(*wcs))) == NULL)
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return (NULL);
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mbsrtowcs(wcs, &s, n + 1, NULL);
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return (wcs);
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}
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static void
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joinlines(INPUT *F1, INPUT *F2)
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{
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u_long cnt1, cnt2;
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/*
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* Output the results of a join comparison. The output may be from
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* either file 1 or file 2 (in which case the first argument is the
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* file from which to output) or from both.
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*/
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if (F2 == NULL) {
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for (cnt1 = 0; cnt1 < F1->setcnt; ++cnt1)
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outoneline(F1, &F1->set[cnt1]);
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return;
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}
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for (cnt1 = 0; cnt1 < F1->setcnt; ++cnt1)
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for (cnt2 = 0; cnt2 < F2->setcnt; ++cnt2)
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outtwoline(F1, &F1->set[cnt1], F2, &F2->set[cnt2]);
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}
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static void
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outoneline(INPUT *F, LINE *lp)
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{
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u_long cnt;
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/*
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* Output a single line from one of the files, according to the
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* join rules. This happens when we are writing unmatched single
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* lines. Output empty fields in the right places.
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*/
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if (olist)
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for (cnt = 0; cnt < olistcnt; ++cnt) {
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if (olist[cnt].filenum == (unsigned)F->number)
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outfield(lp, olist[cnt].fieldno, 0);
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else if (olist[cnt].filenum == 0)
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outfield(lp, F->joinf, 0);
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else
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outfield(lp, 0, 1);
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}
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else {
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/*
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* Output the join field, then the remaining fields.
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*/
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outfield(lp, F->joinf, 0);
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for (cnt = 0; cnt < lp->fieldcnt; ++cnt)
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if (F->joinf != cnt)
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outfield(lp, cnt, 0);
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}
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(void)printf("\n");
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if (ferror(stdout))
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err(1, "stdout");
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needsep = 0;
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}
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static void
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outtwoline(INPUT *F1, LINE *lp1, INPUT *F2, LINE *lp2)
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{
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u_long cnt;
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/* Output a pair of lines according to the join list (if any). */
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if (olist)
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for (cnt = 0; cnt < olistcnt; ++cnt)
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if (olist[cnt].filenum == 0) {
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if (lp1->fieldcnt >= F1->joinf)
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outfield(lp1, F1->joinf, 0);
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else
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outfield(lp2, F2->joinf, 0);
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} else if (olist[cnt].filenum == 1)
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outfield(lp1, olist[cnt].fieldno, 0);
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else /* if (olist[cnt].filenum == 2) */
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outfield(lp2, olist[cnt].fieldno, 0);
|
|
else {
|
|
/*
|
|
* Output the join field, then the remaining fields from F1
|
|
* and F2.
|
|
*/
|
|
outfield(lp1, F1->joinf, 0);
|
|
for (cnt = 0; cnt < lp1->fieldcnt; ++cnt)
|
|
if (F1->joinf != cnt)
|
|
outfield(lp1, cnt, 0);
|
|
for (cnt = 0; cnt < lp2->fieldcnt; ++cnt)
|
|
if (F2->joinf != cnt)
|
|
outfield(lp2, cnt, 0);
|
|
}
|
|
(void)printf("\n");
|
|
if (ferror(stdout))
|
|
err(1, "stdout");
|
|
needsep = 0;
|
|
}
|
|
|
|
static void
|
|
outfield(LINE *lp, u_long fieldno, int out_empty)
|
|
{
|
|
if (needsep++)
|
|
(void)printf("%lc", (wint_t)*tabchar);
|
|
if (!ferror(stdout)) {
|
|
if (lp->fieldcnt <= fieldno || out_empty) {
|
|
if (empty != NULL)
|
|
(void)printf("%s", empty);
|
|
} else {
|
|
if (*lp->fields[fieldno] == '\0')
|
|
return;
|
|
(void)printf("%s", lp->fields[fieldno]);
|
|
}
|
|
}
|
|
if (ferror(stdout))
|
|
err(1, "stdout");
|
|
}
|
|
|
|
/*
|
|
* Convert an output list argument "2.1, 1.3, 2.4" into an array of output
|
|
* fields.
|
|
*/
|
|
static void
|
|
fieldarg(char *option)
|
|
{
|
|
u_long fieldno, filenum;
|
|
char *end, *token;
|
|
|
|
while ((token = strsep(&option, ", \t")) != NULL) {
|
|
if (*token == '\0')
|
|
continue;
|
|
if (token[0] == '0')
|
|
filenum = fieldno = 0;
|
|
else if ((token[0] == '1' || token[0] == '2') &&
|
|
token[1] == '.') {
|
|
filenum = token[0] - '0';
|
|
fieldno = strtol(token + 2, &end, 10);
|
|
if (*end)
|
|
errx(1, "malformed -o option field");
|
|
if (fieldno == 0)
|
|
errx(1, "field numbers are 1 based");
|
|
--fieldno;
|
|
} else
|
|
errx(1, "malformed -o option field");
|
|
if (olistcnt == olistalloc) {
|
|
olistalloc += 50;
|
|
if ((olist = realloc(olist,
|
|
olistalloc * sizeof(OLIST))) == NULL)
|
|
err(1, NULL);
|
|
}
|
|
olist[olistcnt].filenum = filenum;
|
|
olist[olistcnt].fieldno = fieldno;
|
|
++olistcnt;
|
|
}
|
|
}
|
|
|
|
static void
|
|
obsolete(char **argv)
|
|
{
|
|
size_t len;
|
|
char **p, *ap, *t;
|
|
|
|
while ((ap = *++argv) != NULL) {
|
|
/* Return if "--". */
|
|
if (ap[0] == '-' && ap[1] == '-')
|
|
return;
|
|
/* skip if not an option */
|
|
if (ap[0] != '-')
|
|
continue;
|
|
switch (ap[1]) {
|
|
case 'a':
|
|
/*
|
|
* The original join allowed "-a", which meant the
|
|
* same as -a1 plus -a2. POSIX 1003.2, Draft 11.2
|
|
* only specifies this as "-a 1" and "a -2", so we
|
|
* have to use another option flag, one that is
|
|
* unlikely to ever be used or accidentally entered
|
|
* on the command line. (Well, we could reallocate
|
|
* the argv array, but that hardly seems worthwhile.)
|
|
*/
|
|
if (ap[2] == '\0' && (argv[1] == NULL ||
|
|
(strcmp(argv[1], "1") != 0 &&
|
|
strcmp(argv[1], "2") != 0))) {
|
|
ap[1] = '\01';
|
|
warnx("-a option used without an argument; "
|
|
"reverting to historical behavior");
|
|
}
|
|
break;
|
|
case 'j':
|
|
/*
|
|
* The original join allowed "-j[12] arg" and "-j arg".
|
|
* Convert the former to "-[12] arg". Don't convert
|
|
* the latter since getopt(3) can handle it.
|
|
*/
|
|
switch(ap[2]) {
|
|
case '1':
|
|
if (ap[3] != '\0')
|
|
goto jbad;
|
|
ap[1] = '1';
|
|
ap[2] = '\0';
|
|
break;
|
|
case '2':
|
|
if (ap[3] != '\0')
|
|
goto jbad;
|
|
ap[1] = '2';
|
|
ap[2] = '\0';
|
|
break;
|
|
case '\0':
|
|
break;
|
|
default:
|
|
jbad: errx(1, "illegal option -- %s", ap);
|
|
usage();
|
|
}
|
|
break;
|
|
case 'o':
|
|
/*
|
|
* The original join allowed "-o arg arg".
|
|
* Convert to "-o arg -o arg".
|
|
*/
|
|
if (ap[2] != '\0')
|
|
break;
|
|
for (p = argv + 2; *p; ++p) {
|
|
if (p[0][0] == '0' || ((p[0][0] != '1' &&
|
|
p[0][0] != '2') || p[0][1] != '.'))
|
|
break;
|
|
len = strlen(*p);
|
|
if (len - 2 != strspn(*p + 2, "0123456789"))
|
|
break;
|
|
if ((t = malloc(len + 3)) == NULL)
|
|
err(1, NULL);
|
|
t[0] = '-';
|
|
t[1] = 'o';
|
|
memmove(t + 2, *p, len + 1);
|
|
*p = t;
|
|
}
|
|
argv = p - 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr, "%s %s\n%s\n",
|
|
"usage: join [-a fileno | -v fileno ] [-e string] [-1 field]",
|
|
"[-2 field]",
|
|
" [-o list] [-t char] file1 file2");
|
|
exit(1);
|
|
}
|