1 /* $NetBSD: x_cut.c,v 1.3 2025/02/19 17:34:14 gutteridge Exp $ */
2
3 /*
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam S. Moskowitz of Menlo Consulting and Marciano Pitargue.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * This file is #include'd twice from cut.c, to generate both
37 * single- and multibyte versions of the same code.
38 *
39 * In cut.c #define:
40 * CUT_BYTE=1 to define b_cut (singlebyte), and
41 * CUT_BYTE=0 to define c_cut (multibyte).
42 *
43 */
44
45 #if (CUT_BYTE == 1)
46 # define CUT_FN b_cut
47 # define CUT_CH_T int
48 # define CUT_GETC getc
49 # define CUT_EOF EOF
50 # define CUT_PUTCHAR putchar
51 #else
52 # define CUT_FN c_cut
53 # define CUT_CH_T wint_t
54 # define CUT_GETC getwc
55 # define CUT_EOF WEOF
56 # define CUT_PUTCHAR putwchar
57 #endif
58
59
60 /* ARGSUSED */
61 void
CUT_FN(FILE * fp,const char * fname __unused)62 CUT_FN(FILE *fp, const char *fname __unused)
63 {
64 CUT_CH_T ch;
65 int col;
66 char *pos;
67
68 ch = 0;
69 for (;;) {
70 pos = positions + 1;
71 for (col = maxval; col; --col) {
72 if ((ch = CUT_GETC(fp)) == EOF)
73 return;
74 if (ch == '\n')
75 break;
76 if (*pos++)
77 (void)CUT_PUTCHAR(ch);
78 }
79 if (ch != '\n') {
80 if (autostop)
81 while ((ch = CUT_GETC(fp)) != CUT_EOF && ch != '\n')
82 (void)CUT_PUTCHAR(ch);
83 else
84 while ((ch = CUT_GETC(fp)) != CUT_EOF && ch != '\n');
85 }
86 (void)CUT_PUTCHAR('\n');
87 }
88 }
89
90 #undef CUT_FN
91 #undef CUT_CH_T
92 #undef CUT_GETC
93 #undef CUT_EOF
94 #undef CUT_PUTCHAR
95
96