diff options
Diffstat (limited to 'usr.bin/comm/comm.c')
| -rw-r--r-- | usr.bin/comm/comm.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/usr.bin/comm/comm.c b/usr.bin/comm/comm.c deleted file mode 100644 index 8ffbbb5..0000000 --- a/usr.bin/comm/comm.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * 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. 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) 1989, 1993, 1994\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -static char sccsid[] = "@(#)comm.c 8.3 (Berkeley) 4/2/94"; -#endif /* not lint */ - -#include <fcntl.h> -#include <limits.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#define MAXLINELEN (LINE_MAX + 1) - -char *tabs[] = { "", "\t", "\t\t" }; - -FILE *file __P((char *)); -void show __P((FILE *, char *, char *)); -void usage __P((void)); - -int -main(argc, argv) - int argc; - char *argv[]; -{ - int comp, file1done, file2done, read1, read2; - int ch, flag1, flag2, flag3; - FILE *fp1, *fp2; - char *col1, *col2, *col3; - char **p, line1[MAXLINELEN], line2[MAXLINELEN]; - - flag1 = flag2 = flag3 = 1; - while ((ch = getopt(argc, argv, "-123")) != EOF) - switch(ch) { - case '-': - --optind; - goto done; - case '1': - flag1 = 0; - break; - case '2': - flag2 = 0; - break; - case '3': - flag3 = 0; - break; - case '?': - default: - usage(); - } -done: 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 = !fgets(line1, MAXLINELEN, fp1); - if (read2) - file2done = !fgets(line2, MAXLINELEN, 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 = strcmp(line1, line2))) { - read1 = read2 = 1; - if (col3) - (void)printf("%s%s", col3, line1); - continue; - } - - /* lines are different */ - if (comp < 0) { - read1 = 1; - read2 = 0; - if (col1) - (void)printf("%s%s", col1, line1); - } else { - read1 = 0; - read2 = 1; - if (col2) - (void)printf("%s%s", col2, line2); - } - } - exit(0); -} - -void -show(fp, offset, buf) - FILE *fp; - char *offset, *buf; -{ - - do { - (void)printf("%s%s", offset, buf); - } while (fgets(buf, MAXLINELEN, fp)); -} - -FILE * -file(name) - char *name; -{ - FILE *fp; - - if (!strcmp(name, "-")) - return (stdin); - if ((fp = fopen(name, "r")) == NULL) { - (void)fprintf(stderr, "comm: %s: %s\n", name, strerror(errno)); - exit(1); - } - return (fp); -} - -void -usage() -{ - - (void)fprintf(stderr, "usage: comm [-123] file1 file2\n"); - exit(1); -} |
