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8fc8fa80899c66937979cd5b807766a40b74cd13
irix-657m-src/eoe/cmd/cut/cut.c
calmsacibis995 8fc8fa8089 Source code upload
2022-09-29 17:59:04 +03:00

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/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
/* The copyright notice above does not evidence any */
/* actual or intended publication of such source code. */
#ident "@(#)cut:cut.c 1.11.1.1"
#
/* cut : cut and paste columns of a table (projection of a relation) */
/* Release 1.5; handles single backspaces as produced by nroff */
# include <stdlib.h>
# include <stdio.h> /* make: cc cut.c */
# include <ctype.h>
# include <locale.h>
# include <pfmt.h>
# include <errno.h>
# include <string.h>
# include <bstring.h>
# define BUFSIZE 1024 /* max no of fields or resulting line length */
# define BACKSPACE '\b'
#define MLTDUMB ' '
#include <sys/euc.h>
#include <getwidth.h>
void
usage(int complain)
{
if (complain)
pfmt(stderr, MM_ERROR, ":1:Incorrect usage\n");
pfmt(stderr, MM_ACTION,
":137:Usage:\n\tcut [-s] [-d<char>] {-c<list> | -f<list>} file ...\n");
exit(2);
}
void diag(char *s);
int selcheck(void);
void bytesplit(FILE *fp);
void charsplit(FILE *fp);
void fieldsplit(FILE *fp, char *del);
void dump(int nl);
int state;
int maxnum;
int low;
char *sel;
int split_chars;
int supflag;
eucwidth_t wp;
#define STATE_START 0
#define STATE_HASNUM 1
#define STATE_INRANGE 2
#define STATE_HASRANGE 3
#define MID_VALUE 1
#define TERM_VALUE 2
int tty;
static char cflist[] = ":138:Bad list for b/c/f option\n";
static char long_line[] = ":999:Line too long, memory exhausted\n";
char *
liststate(char *p)
{
int i;
char c = *p;
int num = 0;
enum {TERM, RANGE, DIGIT} type;
if (isdigit(c)) {
num = atoi(p);
type = DIGIT;
while (isdigit(*p))
p++;
} else if (c == '\t' || c == ' ' || c == ',' || c == '\0') {
type = TERM;
p++;
} else if (c == '-') {
type = RANGE;
p++;
} else {
diag(cflist);
/* NOTREACHED */
}
switch (state) {
case STATE_START:
if (type == TERM)
diag(cflist);
if (type == DIGIT) {
low = num;
state = STATE_HASNUM;
} else {
low = 1;
state = STATE_INRANGE;
}
break;
case STATE_HASNUM:
if (type == DIGIT)
diag(cflist);
if (type == TERM) {
sel[low] = TERM_VALUE;
state = STATE_START;
low = 0;
} else {
state = STATE_INRANGE;
}
break;
case STATE_INRANGE:
if (type == RANGE)
diag(cflist);
if (type == TERM) {
for (i = low; i <= maxnum; i++)
sel[i] = MID_VALUE;
} else {
for (i = low; i < num; i++)
sel[i] = MID_VALUE;
sel[num] = TERM_VALUE;
}
low = 0;
state = STATE_HASRANGE;
break;
case STATE_HASRANGE:
if (type == RANGE || type == DIGIT)
diag(cflist);
state = STATE_START;
break;
}
return p;
}
int
selcheck()
{
int found = 0;
char *cur = &sel[1], *last = &sel[maxnum + 1];
while (cur < last) {
while (cur < last)
if (*cur++) {
found = 1;
break;
}
while (cur < last) {
if (*cur == MID_VALUE) {
cur++;
} else if (*cur == 0) {
cur++;
} else if (*(cur + 1) != 0) {
*cur++ = MID_VALUE;
} else
cur++;
}
}
return found;
}
main(int argc, char **argv)
{
extern int optind;
extern char *optarg;
register int c;
register char *p, *list;
/* permits multibyte delimiter */
char *del;
int bflag, cflag, fflag, filenr;
FILE *inptr;
int delw = 1;
int exitval = 0;
(void)setlocale(LC_ALL, "");
(void)setcat("uxcore");
(void)setlabel("UX:cut");
del = "\t";
getwidth(&wp);
wp._eucw2++;
wp._eucw3++;
supflag = bflag = cflag = fflag = 0;
split_chars = 1;
if (isatty(1)) {
setvbuf(stdout, malloc(BUFSIZE), _IOFBF, BUFSIZE);
tty = 1;
}
while((c = getopt(argc, argv, "b:c:d:f:ns")) != EOF)
switch(c) {
case 'b':
bflag = 1;
list = optarg;
break;
case 'c':
cflag = 1;
list = optarg;
break;
case 'd':
/* permits multibyte delimiter */
if (ISASCII(*optarg))
delw = 1;
else
delw = ISSET2(*optarg) ? wp._eucw2 :
ISSET3(*optarg) ? wp._eucw3 :
wp._eucw1 ;
if ((int)strlen(optarg) > delw)
diag(":139:No delimiter\n");
else
del = optarg;
break;
case 'f':
fflag = 1;
list = optarg;
break;
case 'n':
split_chars = 0;
break;
case 's':
supflag++;
break;
case '?':
usage(0);
}
argv = &argv[optind];
argc -= optind;
if (bflag + cflag + fflag > 1)
usage(1);
if (bflag + cflag + fflag == 0)
usage(1);
if (!split_chars && bflag == 0)
usage(1);
for (p = list, maxnum = 0; *p != '\0'; ) {
if (isdigit(*p)) {
int tmp = atoi(p);
if (tmp > maxnum) maxnum = tmp;
while (isdigit(*p))
p++;
} else
p++;
}
sel = malloc(maxnum + 2);
bzero(sel, maxnum + 2);
for (p = list; *p != '\0'; )
p = liststate(p);
liststate(p);
if (!selcheck())
diag(":140:No fields\n");
filenr = 0;
do { /* for all input files */
if ( argc == 0 || strcmp(argv[filenr],"-") == 0 )
inptr = stdin;
else
if ((inptr = fopen(argv[filenr], "r")) == NULL) {
pfmt(stderr, MM_WARNING,
":92:Cannot open %s: %s\n",
argv[filenr], strerror(errno));
exitval = 1;
continue;
}
if (bflag)
bytesplit(inptr);
else if (cflag)
charsplit(inptr);
else
fieldsplit(inptr, del);
fclose(inptr);
} while (++filenr < argc);
return exitval;
}
void
bytesplit(FILE *fp)
{
for (;;) { /* for all lines of a file */
int bytecnt = 0;
int c;
for (;;) {
int chwidth;
int i;
char *mcp;
char mcbuf[100];
c = getc(fp);
bytecnt++;
if (c == EOF) {
if (bytecnt != 1) {
putchar('\n');
if (tty)
fflush(stdout);
}
return;
} else if (c == '\n') {
putchar(c);
if (tty)
fflush(stdout);
break;
}
if (ISASCII(c)) {
if (bytecnt <= maxnum ? sel[bytecnt]
: sel[maxnum] == MID_VALUE)
putchar(c);
continue;
}
chwidth = ISSET2(c) ? wp._eucw2
: ISSET3(c) ? wp._eucw3 : wp._eucw1;
mcbuf[0] = (char)c;
for (i = chwidth - 1, mcp = &mcbuf[1]; i-- > 0; )
*mcp++ = getc(fp);
*mcp = '\0';
if (bytecnt <= maxnum) {
if (sel[bytecnt + chwidth - 1])
fputs(mcbuf, fp);
} else if (!split_chars && sel[maxnum] == MID_VALUE) {
fputs(mcbuf, fp);
} else {
for (i = bytecnt; i < bytecnt + chwidth; i++)
if (sel[i])
putchar(mcbuf[i - bytecnt]);
}
bytecnt += chwidth - 1;
}
}
}
static int cnt;
static int cap;
static char *buf;
void
save(int c)
{
if (c == EOF)
return;
if (cnt == cap) {
if (cap == 0)
cap = 1024;
cap *= 2;
buf = realloc(buf, cap);
if (!buf)
diag(long_line);
}
buf[cnt++] = (char)c;
}
void
dump(nl)
{
fwrite(buf, nl ? cnt : cnt - 1, 1, stdout);
if (nl && cnt > 0 && buf[cnt - 1] != '\n')
putchar('\n');
if (tty)
fflush(stdout);
cnt = 0;
}
void
newline()
{
cnt = 0;
}
void
fieldsplit(FILE *fp, char *del)
{
for (;;) { /* for all lines of a file */
int fieldcnt = 1;
int del_found = 0;
int no_fields_printed = 1;
newline();
for (;;) {
int chwidth;
int i;
char *mcp;
char mcbuf[100];
int c;
c = getc(fp);
if (fieldcnt == 1)
save(c);
if (c == EOF) {
if (fieldcnt == 1 && !supflag)
dump(1);
return;
} else if (c == '\n') {
if (fieldcnt > 1) {
putchar(c);
if (tty)
fflush(stdout);
} else if (!supflag) {
dump(1);
}
break;
}
if (ISASCII(c)) {
chwidth = 1;
mcbuf[0] = (char)c;
mcbuf[1] = '\0';
} else {
chwidth = ISSET2(c) ? wp._eucw2
: ISSET3(c) ? wp._eucw3 : wp._eucw1;
mcbuf[0] = (char)c;
for (i = chwidth-1, mcp = &mcbuf[1]; i-- > 0; )
*mcp++ = getc(fp);
*mcp = '\0';
}
if (!strcmp(mcbuf, del))
fieldcnt++;
if (fieldcnt == 1)
continue;
if (!del_found) {
if (sel[1]) {
no_fields_printed = 0;
dump(0);
}
del_found = 1;
}
if (fieldcnt <= maxnum
? sel[fieldcnt] : sel[maxnum] == MID_VALUE)
{
if (no_fields_printed)
no_fields_printed = 0;
else
fputs(mcbuf, stdout);
}
}
}
}
void
charsplit(FILE *fp)
{
for (;;) { /* for all lines of a file */
int charcnt = 0;
int c;
for (;;) {
int chwidth;
int i;
char *mcp;
char mcbuf[100];
c = getc(fp);
charcnt++;
if (c == EOF) {
if (charcnt != 1) {
putchar('\n');
if (tty)
fflush(stdout);
}
return;
} else if (c == '\n') {
putchar(c);
if (tty)
fflush(stdout);
break;
}
if (ISASCII(c)) {
if (charcnt <= maxnum ? sel[charcnt]
: sel[maxnum] == MID_VALUE)
putchar(c);
continue;
}
chwidth = ISSET2(c) ? wp._eucw2
: ISSET3(c) ? wp._eucw3 : wp._eucw1;
mcbuf[0] = (char)c;
for (i = chwidth - 1, mcp = &mcbuf[1]; i-- > 0; )
*mcp++ = getc(fp);
*mcp = '\0';
if (charcnt <= maxnum && sel[charcnt]
|| sel[maxnum] == MID_VALUE)
fputs(mcbuf, fp);
}
}
}
void
diag(char *s)
{
pfmt(stderr, MM_ERROR, s);
exit(2);
}
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