583 lines
14 KiB
C
583 lines
14 KiB
C
/*-
|
|
* Copyright (c) 1991, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Steve Hayman of the Computer Science Department, Indiana University,
|
|
* Michiro Hikida and David Goodenough.
|
|
*
|
|
* 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) 1991, 1993, 1994\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)join.c 8.3 (Berkeley) 4/16/94";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/*
|
|
* There's a structure per input file which encapsulates the state of the
|
|
* file. We repeatedly read lines from each file until we've read in all
|
|
* the consecutive lines from the file with a common join field. Then we
|
|
* compare the set of lines with an equivalent set from the other file.
|
|
*/
|
|
typedef struct {
|
|
char *line; /* line */
|
|
u_long linealloc; /* line allocated count */
|
|
char **fields; /* line field(s) */
|
|
u_long fieldcnt; /* line field(s) count */
|
|
u_long fieldalloc; /* line field(s) allocated count */
|
|
} LINE;
|
|
|
|
typedef struct {
|
|
FILE *fp; /* file descriptor */
|
|
u_long joinf; /* join field (-1, -2, -j) */
|
|
int unpair; /* output unpairable lines (-a) */
|
|
int number; /* 1 for file 1, 2 for file 2 */
|
|
|
|
LINE *set; /* set of lines with same field */
|
|
int pushbool; /* if pushback is set */
|
|
u_long pushback; /* line on the stack */
|
|
u_long setcnt; /* set count */
|
|
u_long setalloc; /* set allocated count */
|
|
} INPUT;
|
|
INPUT input1 = { NULL, 0, 0, 1, NULL, 0, 0, 0, },
|
|
input2 = { NULL, 0, 0, 2, NULL, 0, 0, 0, };
|
|
|
|
typedef struct {
|
|
u_long filenum; /* file number */
|
|
u_long fieldno; /* field number */
|
|
} OLIST;
|
|
OLIST *olist; /* output field list */
|
|
u_long olistcnt; /* output field list count */
|
|
u_long olistalloc; /* output field allocated count */
|
|
|
|
int joinout = 1; /* show lines with matched join fields (-v) */
|
|
int needsep; /* need separator character */
|
|
int spans = 1; /* span multiple delimiters (-t) */
|
|
char *empty; /* empty field replacement string (-e) */
|
|
char *tabchar = " \t"; /* delimiter characters (-t) */
|
|
|
|
int cmp __P((LINE *, u_long, LINE *, u_long));
|
|
void fieldarg __P((char *));
|
|
void joinlines __P((INPUT *, INPUT *));
|
|
void obsolete __P((char **));
|
|
void outfield __P((LINE *, u_long, int));
|
|
void outoneline __P((INPUT *, LINE *));
|
|
void outtwoline __P((INPUT *, LINE *, INPUT *, LINE *));
|
|
void slurp __P((INPUT *));
|
|
void usage __P((void));
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
INPUT *F1, *F2;
|
|
int aflag, ch, cval, vflag;
|
|
char *end;
|
|
|
|
F1 = &input1;
|
|
F2 = &input2;
|
|
|
|
aflag = vflag = 0;
|
|
obsolete(argv);
|
|
while ((ch = getopt(argc, argv, "\01a:e:j:1:2:o:t:v:")) != EOF) {
|
|
switch (ch) {
|
|
case '\01': /* See comment in obsolete(). */
|
|
aflag = 1;
|
|
F1->unpair = F2->unpair = 1;
|
|
break;
|
|
case '1':
|
|
if ((F1->joinf = strtol(optarg, &end, 10)) < 1)
|
|
errx(1, "-1 option field number less than 1");
|
|
if (*end)
|
|
errx(1, "illegal field number -- %s", optarg);
|
|
--F1->joinf;
|
|
break;
|
|
case '2':
|
|
if ((F2->joinf = strtol(optarg, &end, 10)) < 1)
|
|
errx(1, "-2 option field number less than 1");
|
|
if (*end)
|
|
errx(1, "illegal field number -- %s", optarg);
|
|
--F2->joinf;
|
|
break;
|
|
case 'a':
|
|
aflag = 1;
|
|
switch(strtol(optarg, &end, 10)) {
|
|
case 1:
|
|
F1->unpair = 1;
|
|
break;
|
|
case 2:
|
|
F2->unpair = 1;
|
|
break;
|
|
default:
|
|
errx(1, "-a option file number not 1 or 2");
|
|
break;
|
|
}
|
|
if (*end)
|
|
errx(1, "illegal file number -- %s", optarg);
|
|
break;
|
|
case 'e':
|
|
empty = optarg;
|
|
break;
|
|
case 'j':
|
|
if ((F1->joinf = F2->joinf =
|
|
strtol(optarg, &end, 10)) < 1)
|
|
errx(1, "-j option field number less than 1");
|
|
if (*end)
|
|
errx(1, "illegal field number -- %s", optarg);
|
|
--F1->joinf;
|
|
--F2->joinf;
|
|
break;
|
|
case 'o':
|
|
fieldarg(optarg);
|
|
break;
|
|
case 't':
|
|
spans = 0;
|
|
if (strlen(tabchar = optarg) != 1)
|
|
errx(1, "illegal tab character specification");
|
|
break;
|
|
case 'v':
|
|
vflag = 1;
|
|
joinout = 0;
|
|
switch (strtol(optarg, &end, 10)) {
|
|
case 1:
|
|
F1->unpair = 1;
|
|
break;
|
|
case 2:
|
|
F2->unpair = 1;
|
|
break;
|
|
default:
|
|
errx(1, "-v option file number not 1 or 2");
|
|
break;
|
|
}
|
|
if (*end)
|
|
errx(1, "illegal file number -- %s", optarg);
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (aflag && vflag)
|
|
errx(1, "the -a and -v options are mutually exclusive");
|
|
|
|
if (argc != 2)
|
|
usage();
|
|
|
|
/* Open the files; "-" means stdin. */
|
|
if (!strcmp(*argv, "-"))
|
|
F1->fp = stdin;
|
|
else if ((F1->fp = fopen(*argv, "r")) == NULL)
|
|
err(1, "%s", *argv);
|
|
++argv;
|
|
if (!strcmp(*argv, "-"))
|
|
F2->fp = stdin;
|
|
else if ((F2->fp = fopen(*argv, "r")) == NULL)
|
|
err(1, "%s", *argv);
|
|
if (F1->fp == stdin && F2->fp == stdin)
|
|
errx(1, "only one input file may be stdin");
|
|
|
|
slurp(F1);
|
|
slurp(F2);
|
|
while (F1->setcnt && F2->setcnt) {
|
|
cval = cmp(F1->set, F1->joinf, F2->set, F2->joinf);
|
|
if (cval == 0) {
|
|
/* Oh joy, oh rapture, oh beauty divine! */
|
|
if (joinout)
|
|
joinlines(F1, F2);
|
|
slurp(F1);
|
|
slurp(F2);
|
|
} else if (cval < 0) {
|
|
/* File 1 takes the lead... */
|
|
if (F1->unpair)
|
|
joinlines(F1, NULL);
|
|
slurp(F1);
|
|
} else {
|
|
/* File 2 takes the lead... */
|
|
if (F2->unpair)
|
|
joinlines(F2, NULL);
|
|
slurp(F2);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now that one of the files is used up, optionally output any
|
|
* remaining lines from the other file.
|
|
*/
|
|
if (F1->unpair)
|
|
while (F1->setcnt) {
|
|
joinlines(F1, NULL);
|
|
slurp(F1);
|
|
}
|
|
if (F2->unpair)
|
|
while (F2->setcnt) {
|
|
joinlines(F2, NULL);
|
|
slurp(F2);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
slurp(F)
|
|
INPUT *F;
|
|
{
|
|
LINE *lp, *lastlp, tmp;
|
|
size_t len;
|
|
int cnt;
|
|
char *bp, *fieldp;
|
|
|
|
/*
|
|
* Read all of the lines from an input file that have the same
|
|
* join field.
|
|
*/
|
|
F->setcnt = 0;
|
|
for (lastlp = NULL;; ++F->setcnt, lastlp = lp) {
|
|
/*
|
|
* If we're out of space to hold line structures, allocate
|
|
* more. Initialize the structure so that we know that this
|
|
* is new space.
|
|
*/
|
|
if (F->setcnt == F->setalloc) {
|
|
cnt = F->setalloc;
|
|
F->setalloc += 50;
|
|
if ((F->set = realloc(F->set,
|
|
F->setalloc * sizeof(LINE))) == NULL)
|
|
err(1, NULL);
|
|
memset(F->set + cnt, 0, 50 * sizeof(LINE));
|
|
}
|
|
|
|
/*
|
|
* Get any pushed back line, else get the next line. Allocate
|
|
* space as necessary. If taking the line from the stack swap
|
|
* the two structures so that we don't lose space allocated to
|
|
* either structure. This could be avoided by doing another
|
|
* level of indirection, but it's probably okay as is.
|
|
* but it's probably okay as is.
|
|
*/
|
|
lp = &F->set[F->setcnt];
|
|
if (F->pushbool) {
|
|
tmp = F->set[F->setcnt];
|
|
F->set[F->setcnt] = F->set[F->pushback];
|
|
F->set[F->pushback] = tmp;
|
|
F->pushbool = 0;
|
|
continue;
|
|
}
|
|
if ((bp = fgetln(F->fp, &len)) == NULL)
|
|
return;
|
|
if (lp->linealloc <= len + 1) {
|
|
lp->linealloc += MAX(100, len + 1);
|
|
if ((lp->line =
|
|
realloc(lp->line, lp->linealloc)) == NULL)
|
|
err(1, NULL);
|
|
}
|
|
memmove(lp->line, bp, len);
|
|
|
|
/* Replace trailing newline, if it exists. */
|
|
if (bp[len - 1] == '\n')
|
|
lp->line[len - 1] = '\0';
|
|
else
|
|
lp->line[len] = '\0';
|
|
bp = lp->line;
|
|
|
|
/* Split the line into fields, allocate space as necessary. */
|
|
lp->fieldcnt = 0;
|
|
while ((fieldp = strsep(&bp, tabchar)) != NULL) {
|
|
if (spans && *fieldp == '\0')
|
|
continue;
|
|
if (lp->fieldcnt == lp->fieldalloc) {
|
|
lp->fieldalloc += 50;
|
|
if ((lp->fields = realloc(lp->fields,
|
|
lp->fieldalloc * sizeof(char *))) == NULL)
|
|
err(1, NULL);
|
|
}
|
|
lp->fields[lp->fieldcnt++] = fieldp;
|
|
}
|
|
|
|
/* See if the join field value has changed. */
|
|
if (lastlp != NULL && cmp(lp, F->joinf, lastlp, F->joinf)) {
|
|
F->pushbool = 1;
|
|
F->pushback = F->setcnt;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
cmp(lp1, fieldno1, lp2, fieldno2)
|
|
LINE *lp1, *lp2;
|
|
u_long fieldno1, fieldno2;
|
|
{
|
|
if (lp1->fieldcnt < fieldno1)
|
|
return (lp2->fieldcnt < fieldno2 ? 0 : 1);
|
|
if (lp2->fieldcnt < fieldno2)
|
|
return (-1);
|
|
return (strcmp(lp1->fields[fieldno1], lp2->fields[fieldno2]));
|
|
}
|
|
|
|
void
|
|
joinlines(F1, F2)
|
|
INPUT *F1, *F2;
|
|
{
|
|
int cnt1, cnt2;
|
|
|
|
/*
|
|
* Output the results of a join comparison. The output may be from
|
|
* either file 1 or file 2 (in which case the first argument is the
|
|
* file from which to output) or from both.
|
|
*/
|
|
if (F2 == NULL) {
|
|
for (cnt1 = 0; cnt1 < F1->setcnt; ++cnt1)
|
|
outoneline(F1, &F1->set[cnt1]);
|
|
return;
|
|
}
|
|
for (cnt1 = 0; cnt1 < F1->setcnt; ++cnt1)
|
|
for (cnt2 = 0; cnt2 < F2->setcnt; ++cnt2)
|
|
outtwoline(F1, &F1->set[cnt1], F2, &F2->set[cnt2]);
|
|
}
|
|
|
|
void
|
|
outoneline(F, lp)
|
|
INPUT *F;
|
|
LINE *lp;
|
|
{
|
|
int cnt;
|
|
|
|
/*
|
|
* Output a single line from one of the files, according to the
|
|
* join rules. This happens when we are writing unmatched single
|
|
* lines. Output empty fields in the right places.
|
|
*/
|
|
if (olist)
|
|
for (cnt = 0; cnt < olistcnt; ++cnt) {
|
|
if (olist[cnt].filenum == F->number)
|
|
outfield(lp, olist[cnt].fieldno, 0);
|
|
else
|
|
outfield(lp, 0, 1);
|
|
}
|
|
else
|
|
for (cnt = 0; cnt < lp->fieldcnt; ++cnt)
|
|
outfield(lp, cnt, 0);
|
|
(void)printf("\n");
|
|
if (ferror(stdout))
|
|
err(1, "stdout");
|
|
needsep = 0;
|
|
}
|
|
|
|
void
|
|
outtwoline(F1, lp1, F2, lp2)
|
|
INPUT *F1, *F2;
|
|
LINE *lp1, *lp2;
|
|
{
|
|
int cnt;
|
|
|
|
/* Output a pair of lines according to the join list (if any). */
|
|
if (olist)
|
|
for (cnt = 0; cnt < olistcnt; ++cnt)
|
|
if (olist[cnt].filenum == 1)
|
|
outfield(lp1, olist[cnt].fieldno, 0);
|
|
else /* if (olist[cnt].filenum == 2) */
|
|
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;
|
|
}
|
|
|
|
void
|
|
outfield(lp, fieldno, out_empty)
|
|
LINE *lp;
|
|
u_long fieldno;
|
|
int out_empty;
|
|
{
|
|
if (needsep++)
|
|
(void)printf("%c", *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.
|
|
*/
|
|
void
|
|
fieldarg(option)
|
|
char *option;
|
|
{
|
|
u_long fieldno;
|
|
char *end, *token;
|
|
|
|
while ((token = strsep(&option, " \t")) != NULL) {
|
|
if (*token == '\0')
|
|
continue;
|
|
if (token[0] != '1' && token[0] != '2' || token[1] != '.')
|
|
errx(1, "malformed -o option field");
|
|
fieldno = strtol(token + 2, &end, 10);
|
|
if (*end)
|
|
errx(1, "malformed -o option field");
|
|
if (fieldno == 0)
|
|
errx(1, "field numbers are 1 based");
|
|
if (olistcnt == olistalloc) {
|
|
olistalloc += 50;
|
|
if ((olist = realloc(olist,
|
|
olistalloc * sizeof(OLIST))) == NULL)
|
|
err(1, NULL);
|
|
}
|
|
olist[olistcnt].filenum = token[0] - '0';
|
|
olist[olistcnt].fieldno = fieldno - 1;
|
|
++olistcnt;
|
|
}
|
|
}
|
|
|
|
void
|
|
obsolete(argv)
|
|
char **argv;
|
|
{
|
|
int len;
|
|
char **p, *ap, *t;
|
|
|
|
while ((ap = *++argv) != NULL) {
|
|
/* Return if "--". */
|
|
if (ap[0] == '-' && ap[1] == '-')
|
|
return;
|
|
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')
|
|
ap[1] = '\01';
|
|
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] != '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;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr, "%s%s\n",
|
|
"usage: join [-a fileno | -v fileno ] [-e string] [-1 field] ",
|
|
"[-2 field]\n [-o list] [-t char] file1 file2");
|
|
exit(1);
|
|
}
|