2 * Copyright (c) 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static const char copyright[] =
39 "@(#) Copyright (c) 1989, 1993, 1994\n\
40 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "From: @(#)comm.c 8.4 (Berkeley) 5/4/95";
49 #include <sys/cdefs.h>
50 __FBSDID("$FreeBSD$");
62 #define MAXLINELEN (LINE_MAX + 1)
64 const wchar_t *tabs[] = { L"", L"\t", L"\t\t" };
66 FILE *file(const char *);
67 void show(FILE *, const char *, const wchar_t *, wchar_t *);
68 int wcsicoll(const wchar_t *, const wchar_t *);
69 static void usage(void);
72 main(int argc, char *argv[])
74 int comp, file1done = 0, file2done = 0, read1, read2;
75 int ch, flag1, flag2, flag3, iflag;
77 const wchar_t *col1, *col2, *col3;
78 wchar_t line1[MAXLINELEN], line2[MAXLINELEN];
81 flag1 = flag2 = flag3 = 1;
84 (void) setlocale(LC_ALL, "");
86 while ((ch = getopt(argc, argv, "123i")) != -1)
113 /* for each column printed, add another tab offset */
115 col1 = col2 = col3 = NULL;
123 for (read1 = read2 = 1;;) {
124 /* read next line, check for EOF */
126 file1done = !fgetws(line1, MAXLINELEN, fp1);
127 if (file1done && ferror(fp1))
128 err(1, "%s", argv[0]);
131 file2done = !fgetws(line2, MAXLINELEN, fp2);
132 if (file2done && ferror(fp2))
133 err(1, "%s", argv[1]);
136 /* if one file done, display the rest of the other file */
138 if (!file2done && col2)
139 show(fp2, argv[1], col2, line2);
143 if (!file1done && col1)
144 show(fp1, argv[0], col1, line1);
148 /* lines are the same */
150 comp = wcsicoll(line1, line2);
152 comp = wcscoll(line1, line2);
157 (void)printf("%ls%ls", col3, line1);
161 /* lines are different */
166 (void)printf("%ls%ls", col1, line1);
171 (void)printf("%ls%ls", col2, line2);
178 show(FILE *fp, const char *fn, const wchar_t *offset, wchar_t *buf)
182 (void)printf("%ls%ls", offset, buf);
183 } while (fgetws(buf, MAXLINELEN, fp));
189 file(const char *name)
193 if (!strcmp(name, "-"))
195 if ((fp = fopen(name, "r")) == NULL) {
204 (void)fprintf(stderr, "usage: comm [-123i] file1 file2\n");
209 wcsicoll(const wchar_t *s1, const wchar_t *s2)
211 wchar_t *p, line1[MAXLINELEN], line2[MAXLINELEN];
213 for (p = line1; *s1; s1++)
214 *p++ = towlower(*s1);
216 for (p = line2; *s2; s2++)
217 *p++ = towlower(*s2);
219 return (wcscoll(line1, line2));