BSD License Included. Ported by Fernando Francisco de Oliveira.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4770 a95241bf-73f2-0310-859d-f6bbb57e9c96
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Phil Greenway
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230
src/apps/bin/comm.c
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230
src/apps/bin/comm.c
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/*
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* Copyright (c) 1989, 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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* Case Larsen.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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[] = "@(#) Copyright (c) 1989, 1993, 1994\n The Regents of the University of California. All rights reserved.\n";
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#endif
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#if 1
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#ifndef lint
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static char sccsid[] = "From: @(#)comm.c 8.4 (Berkeley) 5/4/95";
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#endif
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#endif
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//#include <cdefs.h>
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//__FBSDID("$FreeBSD: /repoman/r/ncvs/src/usr.bin/comm/comm.c,v 1.20 2002/07/28 15:28:38 dwmalone Exp $");
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#include <ctype.h>
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//#include <err.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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#define LINE_MAX 99999
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#define MAXLINELEN (LINE_MAX + 1)
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const char *tabs[] = { "", "\t", "\t\t" };
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FILE *file(const char *);
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void show(FILE *, const char *, char *);
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int stricoll(const char *, const char *);
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static void usage(void);
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static void printversion(void);
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int
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main(int argc, char *argv[])
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{
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int comp, file1done = 0, file2done = 0, read1, read2;
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int ch, flag1, flag2, flag3, iflag;
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FILE *fp1, *fp2;
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const char *col1, *col2, *col3;
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char line1[MAXLINELEN], line2[MAXLINELEN];
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const char **p;
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flag1 = flag2 = flag3 = 1;
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iflag = 0;
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(void) setlocale(LC_ALL, "");
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while ((ch = getopt(argc, argv, "123ivh")) != -1)
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switch(ch) {
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case '1':
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flag1 = 0;
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break;
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case '2':
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flag2 = 0;
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break;
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case '3':
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flag3 = 0;
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break;
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case 'i':
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iflag = 1;
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break;
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case 'v':
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printversion();
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break;
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc != 2)
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usage();
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fp1 = file(argv[0]);
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fp2 = file(argv[1]);
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/* for each column printed, add another tab offset */
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p = tabs;
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col1 = col2 = col3 = NULL;
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if (flag1)
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col1 = *p++;
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if (flag2)
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col2 = *p++;
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if (flag3)
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col3 = *p;
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for (read1 = read2 = 1;;) {
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/* read next line, check for EOF */
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if (read1)
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file1done = !fgets(line1, MAXLINELEN, fp1);
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if (read2)
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file2done = !fgets(line2, MAXLINELEN, fp2);
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/* if one file done, display the rest of the other file */
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if (file1done) {
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if (!file2done && col2)
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show(fp2, col2, line2);
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break;
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}
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if (file2done) {
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if (!file1done && col1)
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show(fp1, col1, line1);
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break;
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}
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/* lines are the same */
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if(iflag)
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comp = stricoll(line1, line2);
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else
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comp = strcoll(line1, line2);
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if (!comp) {
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read1 = read2 = 1;
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if (col3)
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(void)printf("%s%s", col3, line1);
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continue;
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}
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/* lines are different */
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if (comp < 0) {
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read1 = 1;
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read2 = 0;
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if (col1)
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(void)printf("%s%s", col1, line1);
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} else {
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read1 = 0;
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read2 = 1;
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if (col2)
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(void)printf("%s%s", col2, line2);
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}
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}
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exit(0);
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}
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void
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show(FILE *fp, const char *offset, char *buf)
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{
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do {
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(void)printf("%s%s", offset, buf);
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} while (fgets(buf, MAXLINELEN, fp));
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}
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FILE *
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file(const char *name)
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{
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FILE *fp;
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if (!strcmp(name, "-"))
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return (stdin);
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if ((fp = fopen(name, "r")) == NULL) {
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sprintf("%s", name);
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}
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return (fp);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr, "Usage: /bin/comm [OPTION]... LEFT_FILE RIGHT_FILE
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Compare sorted files LEFT_FILE and RIGHT_FILE line by line.
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-1 suppress lines unique to left file
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-2 suppress lines unique to right file
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-3 suppress lines unique to both files
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-help display this help and exit
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-version output version information and exit
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");
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exit(1);
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}
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static void
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printversion(void)
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{
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(void)fprintf(stderr, copyright);
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(void)fprintf(stderr, "\nVersion : %s\n", sccsid);
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exit(1);
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}
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int
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stricoll(const char *s1, const char *s2)
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{
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char *p, line1[MAXLINELEN], line2[MAXLINELEN];
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for (p = line1; *s1; s1++)
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*p++ = tolower((unsigned char)*s1);
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*p = '\0';
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for (p = line2; *s2; s2++)
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*p++ = tolower((unsigned char)*s2);
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*p = '\0';
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return strcoll(line1, line2);
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}
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