Importing usr.bin/comm
Replaces commands/comm. No Minix-specific changes needed. Change-Id: Ifa37c86b09f958ca0d729f3a8030d0162819a080
This commit is contained in:
Thomas Cort
parent
2e7c53b597
commit
f55b7dc853
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@ -5,7 +5,7 @@
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SUBDIR= add_route arp ash at backup btrace \
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cawf cd cdprobe cpp \
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chmod chown ci cleantmp cmp co \
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comm compress cp crc cron crontab \
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compress cp crc cron crontab \
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dd decomp16 DESCRIBE devmand devsize df dhcpd \
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dhrystone diff diskctl dumpcore \
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eject factor fbdctl \
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@ -1,4 +0,0 @@
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PROG= comm
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MAN=
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.include <bsd.prog.mk>
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@ -1,206 +0,0 @@
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/* comm - select lines from two sorted files Author: Martin C. Atkins */
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/*
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* This program was written by:
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* Martin C. Atkins,
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* University of York,
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* Heslington,
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* York. Y01 5DD
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* England
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* and is released into the public domain, on the condition
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* that this comment is always included without alteration.
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*/
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#include <sys/types.h>
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#include <fcntl.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 <minix/minlib.h>
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#include <stdio.h>
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#define BUFFER_SIZE (512)
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#define LINMAX (600)
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struct file {
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char *name; /* the file's name */
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int fd; /* the file descripter */
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char buf[BUFFER_SIZE]; /* buffer storage */
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char *next; /* the next character to read */
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char *endp; /* the first invalid character */
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int seeneof; /* an end of file has been seen */
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} files[2];
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char lines[2][LINMAX];
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int colflgs[3] = {1, 2, 3}; /* number of tabs + 1: 0 => no column */
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static char *umsg = "Usage: comm [-[123]] file1 file2\n";
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int main(int argc, char **argv);
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void usage(void);
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void error(char *s, char *f);
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void eopen(char *fn, struct file *file);
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int getbuf(struct file *file);
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int readline(int fno);
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void comm(void);
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void putcol(int col, char *buf);
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void cpycol(int col);
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int main(argc, argv)
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int argc;
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char *argv[];
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{
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int cnt;
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if (argc > 1 && argv[1][0] == '-' && argv[1][1] != '\0') {
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char *ap;
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for (ap = &argv[1][1]; *ap; ap++) switch (*ap) {
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case '1':
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case '2':
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case '3':
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cnt = *ap - '1';
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if (colflgs[cnt] == 0) break;
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colflgs[cnt] = 0;
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for (cnt++; cnt < 3; cnt++) colflgs[cnt]--;
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break;
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default: usage();
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}
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argc--;
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argv++;
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}
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if (argc != 3) usage();
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eopen(argv[1], &files[0]);
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eopen(argv[2], &files[1]);
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comm();
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return(0);
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}
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void usage()
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{
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std_err(umsg);
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exit(1);
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}
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void error(s, f)
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char *s, *f;
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{
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std_err("comm: ");
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std_err(s);
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if (f) std_err(f);
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std_err("\n");
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exit(1);
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}
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void eopen(fn, file)
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char *fn;
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struct file *file;
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{
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file->name = fn;
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file->next = file->endp = &file->buf[0];
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file->seeneof = 0;
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if (fn[0] == '-' && fn[1] == '\0')
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file->fd = 0;
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else if ((file->fd = open(fn, O_RDONLY)) < 0)
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error("can't open ", fn);
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}
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int getbuf(file)
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struct file *file;
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{
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/* Get a buffer-full from the file. Return true if no characters
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* were obtained because we are at end of file.
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*/
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int n;
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if (file->seeneof) return(1);
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if ((n = read(file->fd, &file->buf[0], BUFFER_SIZE)) < 0)
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error("read error on ", file->name);
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if (n == 0) {
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file->seeneof++;
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return 1;
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}
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file->next = &file->buf[0];
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file->endp = &file->buf[n];
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return(0);
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}
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int readline(fno)
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int fno;
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{
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/* Read up to the next '\n' character to buf.
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* Return a complete line, even if end of file occurs within a line.
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* Return false at end of file/
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*/
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register struct file *file = &files[fno];
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char *buf = lines[fno];
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if (file->next == file->endp && getbuf(file)) return(0);
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while ((*buf++ = *file->next++) != '\n')
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if (file->next == file->endp && getbuf(file)) {
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*buf++ = '\n';
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*buf = '\0';
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return(1);
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}
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*buf = '\0';
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return(1);
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}
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void comm()
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{
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register int res;
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if (!readline(0)) {
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cpycol(1);
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return;
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}
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if (!readline(1)) {
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putcol(0, lines[0]);
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cpycol(0);
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return;
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}
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for (;;) {
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if ((res = strcmp(lines[0], lines[1])) != 0) {
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res = res > 0;
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putcol(res, lines[res]);
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if (!readline(res)) {
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putcol(!res, lines[!res]);
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cpycol(!res);
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return;
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}
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} else {
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putcol(2, lines[0]); /* files[1]lin == f2lin */
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if (!readline(0)) {
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cpycol(1);
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return;
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}
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if (!readline(1)) {
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putcol(0, lines[0]);
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cpycol(0);
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return;
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}
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}
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}
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/* NOTREACHED */
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}
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void putcol(col, buf)
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int col;
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char *buf;
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{
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int cnt;
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if (colflgs[col] == 0) return;
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for (cnt = 0; cnt < colflgs[col] - 1; cnt++) printf("\t");
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printf("%s", buf);
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}
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void cpycol(col)
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int col;
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{
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if (colflgs[col]) while (readline(col))
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putcol(col, lines[col]);
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}
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@ -1,6 +1,6 @@
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MAN= ash.1 at.1 \
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bsfilt.1 cawf.1 chgrp.1 \
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chmod.1 cmp.1 comm.1 compress.1 \
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chmod.1 cmp.1 compress.1 \
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cp.1 crc.1 crontab.1 dd.1 \
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df.1 dhrystone.1 dosdir.1 dosread.1 doswrite.1 \
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dumpcore.1 eject.1 \
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@ -1,49 +0,0 @@
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.TH COMM 1
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.SH NAME
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comm \- print lines common to two sorted files
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.SH SYNOPSIS
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\fBcomm\fR [\fB\-123\fR] \fIfile1 file2\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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.SH OPTIONS
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.TP 5
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.B \-1
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# Suppress column 1 (lines present only in \fIfile1\fP)
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.TP 5
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.B \-2
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# Suppress column 2 (lines present only in \fIfile2\fP)
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.TP 5
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.B \-3
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# Suppress column 3 (lines present in both files)
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.SH EXAMPLES
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.TP 20
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.B comm file1 file2
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# Print all three columns
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.TP 20
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.B comm \-12 file1 file2
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# Print only lines common to both files
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.SH DESCRIPTION
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.PP
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Two sorted files are read and compared.
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A three column listing is produced.
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Files only in
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.I file1
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are in column 1;
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files only in
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.I file2
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are in column 2;
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files common to both files are in column 3.
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The file name \- means \fIstdin\fR.
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.SH "SEE ALSO"
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.BR cmp (1),
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.BR diff (1),
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.BR sort (1).
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@ -154,6 +154,7 @@
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2012/10/17 12:00:00,usr.bin/cksum
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2012/10/17 12:00:00,usr.bin/col
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2013/10/16 12:00:00,usr.bin/column
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2012/10/17 12:00:00,usr.bin/comm
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2012/10/17 12:00:00,usr.bin/ctags
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2013/10/14 12:00:00,usr.bin/cut
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2012/10/17 12:00:00,usr.bin/dirname
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@ -7,7 +7,7 @@ SUBDIR= asa \
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banner basename bdes \
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bzip2 bzip2recover \
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cal chpass cksum \
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col column ctags cut \
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col column comm ctags cut \
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dirname du \
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env expand \
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finger from \
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@ -0,0 +1,6 @@
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# $NetBSD: Makefile,v 1.3 1995/03/26 09:25:49 glass Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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PROG= comm
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.include <bsd.prog.mk>
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@ -0,0 +1,103 @@
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.\" $NetBSD: comm.1,v 1.11 2009/03/09 19:24:32 joerg Exp $
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.\"
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.\" Copyright (c) 1989, 1990, 1993
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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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.\" the Institute of Electrical and Electronics Engineers, Inc.
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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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.\" @(#)comm.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd June 6, 1993
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.Dt COMM 1
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.Os
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.Sh NAME
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.Nm comm
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.Nd select or reject lines common to two files
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.Sh SYNOPSIS
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.Nm
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.Op Fl 123f
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.Ar file1 file2
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.Sh DESCRIPTION
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The
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.Nm
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utility reads
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.Ar file1
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and
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.Ar file2 ,
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which should be
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sorted lexically, and produces three text
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columns as output: lines only in
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.Ar file1 ;
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lines only in
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.Ar file2 ;
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and lines in both files.
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.Pp
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The filename ``-'' means the standard input.
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.Pp
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The following options are available:
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.Bl -tag -width Ds
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.It Fl 1
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Suppress printing of column 1.
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.It Fl 2
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Suppress printing of column 2.
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.It Fl 3
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Suppress printing of column 3.
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.It Fl f
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Fold case in line comparisons.
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.El
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.Pp
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Each column will have a number of tab characters prepended to it
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equal to the number of lower numbered columns that are being printed.
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For example, if column number two is being suppressed, lines printed
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in column number one will not have any tabs preceding them, and lines
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printed in column number three will have one.
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.Pp
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.Nm
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assumes that the files are lexically sorted; all characters
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participate in line comparisons.
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.\" .Sh ENVIRONMENT
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.\" .Bl -tag -width indent
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.\" .It Ev LANG
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.\" .It Ev LC_ALL
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.\" .It Ev LC_CTYPE
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.\" .It Ev LC_COLLATE
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.\" .It Ev LC_MESSAGES
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.\" .El
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.Sh EXIT STATUS
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.Nm
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exits 0 on success, \*[Gt]0 if an error occurred.
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.Sh SEE ALSO
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.Xr cmp 1 ,
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.Xr diff 1 ,
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.Xr sort 1 ,
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.Xr uniq 1
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.Sh STANDARDS
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The
|
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.Nm
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utility conforms to
|
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.St -p1003.2-92 .
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|
@ -0,0 +1,213 @@
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/* $NetBSD: comm.c,v 1.20 2012/09/05 04:01:23 simonb Exp $ */
|
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|
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/*
|
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* Copyright (c) 1989, 1993, 1994
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to Berkeley by
|
||||
* Case Larsen.
|
||||
*
|
||||
* 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. 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
__COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\
|
||||
The Regents of the University of California. All rights reserved.");
|
||||
#endif /* not lint */
|
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|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)comm.c 8.4 (Berkeley) 5/4/95";
|
||||
#endif
|
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__RCSID("$NetBSD: comm.c,v 1.20 2012/09/05 04:01:23 simonb Exp $");
|
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#endif /* not lint */
|
||||
|
||||
#include <err.h>
|
||||
#include <limits.h>
|
||||
#include <locale.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#define MAXLINELEN (LINE_MAX + 1)
|
||||
|
||||
static const char *tabs[] = { "", "\t", "\t\t" };
|
||||
|
||||
static FILE *file(const char *);
|
||||
static void show(FILE *, const char *, char *);
|
||||
__dead static void usage(void);
|
||||
static char *getnextln(char *buf, FILE *);
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
int comp, file1done, file2done, read1, read2;
|
||||
int ch, flag1, flag2, flag3;
|
||||
FILE *fp1, *fp2;
|
||||
const char *col1, *col2, *col3, **p;
|
||||
char line1[MAXLINELEN], line2[MAXLINELEN];
|
||||
int (*compare)(const char*,const char*);
|
||||
|
||||
(void)setlocale(LC_ALL, "");
|
||||
|
||||
file1done = file2done = 0;
|
||||
flag1 = flag2 = flag3 = 1;
|
||||
compare = strcoll;
|
||||
while ((ch = getopt(argc, argv, "123f")) != -1)
|
||||
switch(ch) {
|
||||
case '1':
|
||||
flag1 = 0;
|
||||
break;
|
||||
case '2':
|
||||
flag2 = 0;
|
||||
break;
|
||||
case '3':
|
||||
flag3 = 0;
|
||||
break;
|
||||
case 'f':
|
||||
compare = strcasecmp;
|
||||
break;
|
||||
case '?':
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
if (argc != 2)
|
||||
usage();
|
||||
|
||||
fp1 = file(argv[0]);
|
||||
fp2 = file(argv[1]);
|
||||
|
||||
/* for each column printed, add another tab offset */
|
||||
p = tabs;
|
||||
col1 = col2 = col3 = NULL;
|
||||
if (flag1)
|
||||
col1 = *p++;
|
||||
if (flag2)
|
||||
col2 = *p++;
|
||||
if (flag3)
|
||||
col3 = *p;
|
||||
|
||||
for (read1 = read2 = 1;;) {
|
||||
/* read next line, check for EOF */
|
||||
if (read1)
|
||||
file1done = !getnextln(line1, fp1);
|
||||
if (read2)
|
||||
file2done = !getnextln(line2, fp2);
|
||||
|
||||
/* if one file done, display the rest of the other file */
|
||||
if (file1done) {
|
||||
if (!file2done && col2)
|
||||
show(fp2, col2, line2);
|
||||
break;
|
||||
}
|
||||
if (file2done) {
|
||||
if (!file1done && col1)
|
||||
show(fp1, col1, line1);
|
||||
break;
|
||||
}
|
||||
|
||||
/* lines are the same */
|
||||
if (!(comp = compare(line1, line2))) {
|
||||
read1 = read2 = 1;
|
||||
if (col3)
|
||||
if (printf("%s%s\n", col3, line1) < 0)
|
||||
break;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* lines are different */
|
||||
if (comp < 0) {
|
||||
read1 = 1;
|
||||
read2 = 0;
|
||||
if (col1)
|
||||
if (printf("%s%s\n", col1, line1) < 0)
|
||||
break;
|
||||
} else {
|
||||
read1 = 0;
|
||||
read2 = 1;
|
||||
if (col2)
|
||||
if (printf("%s%s\n", col2, line2) < 0)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (ferror (stdout) || fclose (stdout) == EOF)
|
||||
err(1, "stdout");
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
static void
|
||||
show(FILE *fp, const char *offset, char *buf)
|
||||
{
|
||||
while (printf("%s%s\n", offset, buf) >= 0 && getnextln(buf, fp))
|
||||
;
|
||||
}
|
||||
|
||||
static FILE *
|
||||
file(const char *name)
|
||||
{
|
||||
FILE *fp;
|
||||
|
||||
if (!strcmp(name, "-"))
|
||||
return (stdin);
|
||||
if ((fp = fopen(name, "r")) == NULL)
|
||||
err(1, "%s", name);
|
||||
return (fp);
|
||||
}
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
|
||||
(void)fprintf(stderr, "usage: comm [-123f] file1 file2\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
static char *
|
||||
getnextln(char *buf, FILE *fp)
|
||||
{
|
||||
size_t i = 0;
|
||||
int c;
|
||||
|
||||
while ((c = getc(fp)) != '\n' && c != EOF) {
|
||||
buf[i++] = c;
|
||||
|
||||
if (i >= MAXLINELEN)
|
||||
i--; /* consumes extra characters till newline */
|
||||
}
|
||||
|
||||
if (c == EOF && !i)
|
||||
return NULL;
|
||||
|
||||
buf[i] = 0;
|
||||
return buf;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue