]>
Commit | Line | Data |
---|---|---|
6dbe3af9 KZ |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
eb63b9b8 | 34 | /* |
b50945d4 | 35 | * 1999-02-22 Arkadiusz MiĆkiewicz <misiek@pld.ORG.PL> |
eb63b9b8 KZ |
36 | * added Native Language Support |
37 | * 1999-09-19 Bruno Haible <haible@clisp.cons.org> | |
38 | * modified to work correctly in multi-byte locales | |
39 | */ | |
7eda085c | 40 | |
6dbe3af9 | 41 | #include <stdio.h> |
eb63b9b8 | 42 | #include <stdlib.h> |
1647d032 | 43 | #include <getopt.h> |
b87cbe84 | 44 | #include <unistd.h> |
eb63b9b8 | 45 | |
8b7f16fc | 46 | #include "nls.h" |
1647d032 SK |
47 | #include "strutils.h" |
48 | #include "c.h" | |
9ea8ded3 | 49 | #include "widechar.h" |
b87cbe84 | 50 | #include "closestream.h" |
2b6fc908 | 51 | |
6dbe3af9 KZ |
52 | /* |
53 | COLRM removes unwanted columns from a file | |
54 | Jeff Schriebman UC Berkeley 11-74 | |
55 | */ | |
56 | ||
86be6a32 | 57 | static void __attribute__((__noreturn__)) usage(void) |
6dbe3af9 | 58 | { |
86be6a32 | 59 | FILE *out = stdout; |
1647d032 SK |
60 | fprintf(out, _("\nUsage:\n" |
61 | " %s [startcol [endcol]]\n"), | |
62 | program_invocation_short_name); | |
451dbcfa BS |
63 | |
64 | fputs(USAGE_SEPARATOR, out); | |
65 | fputs(_("Filter out the specified columns.\n"), out); | |
66 | ||
db433bf7 | 67 | fputs(USAGE_OPTIONS, out); |
f45f3ec3 | 68 | printf(USAGE_HELP_OPTIONS(16)); |
1647d032 SK |
69 | fprintf(out, _("%s reads from standard input and writes to standard output\n\n"), |
70 | program_invocation_short_name); | |
f45f3ec3 | 71 | printf(USAGE_MAN_TAIL("colrm(1)")); |
86be6a32 | 72 | exit(EXIT_SUCCESS); |
1647d032 SK |
73 | } |
74 | ||
a4b8ce82 | 75 | static int process_input(unsigned long first, unsigned long last) |
1647d032 SK |
76 | { |
77 | unsigned long ct = 0; | |
78 | wint_t c; | |
79 | unsigned long i; | |
80 | int w; | |
66ee8158 | 81 | int padding; |
eb63b9b8 | 82 | |
1647d032 SK |
83 | for (;;) { |
84 | c = getwc(stdin); | |
85 | if (c == WEOF) | |
86 | return 0; | |
87 | if (c == '\t') | |
88 | w = ((ct + 8) & ~7) - ct; | |
89 | else if (c == '\b') | |
90 | w = (ct ? ct - 1 : 0) - ct; | |
91 | else { | |
92 | w = wcwidth(c); | |
93 | if (w < 0) | |
94 | w = 0; | |
95 | } | |
96 | ct += w; | |
97 | if (c == '\n') { | |
98 | putwc(c, stdout); | |
99 | ct = 0; | |
100 | continue; | |
6dbe3af9 | 101 | |
1647d032 SK |
102 | } |
103 | if (!first || ct < first) { | |
104 | putwc(c, stdout); | |
105 | continue; | |
106 | } | |
107 | break; | |
6dbe3af9 | 108 | } |
1647d032 SK |
109 | |
110 | for (i = ct - w + 1; i < first; i++) | |
66ee8158 | 111 | putwc(' ', stdout); |
6dbe3af9 | 112 | |
1647d032 | 113 | /* Loop getting rid of characters */ |
6dbe3af9 | 114 | while (!last || ct < last) { |
eb63b9b8 | 115 | c = getwc(stdin); |
ffc43748 | 116 | if (c == WEOF) |
1647d032 | 117 | return 0; |
6dbe3af9 | 118 | if (c == '\n') { |
eb63b9b8 | 119 | putwc(c, stdout); |
1647d032 | 120 | return 1; |
6dbe3af9 KZ |
121 | } |
122 | if (c == '\t') | |
123 | ct = (ct + 8) & ~7; | |
124 | else if (c == '\b') | |
125 | ct = ct ? ct - 1 : 0; | |
66ee8158 KZ |
126 | else { |
127 | w = wcwidth(c); | |
128 | if (w < 0) | |
129 | w = 0; | |
130 | ct += w; | |
131 | } | |
6dbe3af9 KZ |
132 | } |
133 | ||
66ee8158 KZ |
134 | padding = 0; |
135 | ||
1647d032 | 136 | /* Output last of the line */ |
6dbe3af9 | 137 | for (;;) { |
eb63b9b8 | 138 | c = getwc(stdin); |
ffc43748 | 139 | if (c == WEOF) |
6dbe3af9 | 140 | break; |
66ee8158 KZ |
141 | if (c == '\n') { |
142 | putwc(c, stdout); | |
1647d032 | 143 | return 1; |
66ee8158 KZ |
144 | } |
145 | if (padding == 0 && last < ct) { | |
1647d032 | 146 | for (i = last; i < ct; i++) |
66ee8158 KZ |
147 | putwc(' ', stdout); |
148 | padding = 1; | |
149 | } | |
150 | putwc(c, stdout); | |
6dbe3af9 | 151 | } |
1647d032 SK |
152 | return 0; |
153 | } | |
154 | ||
155 | int main(int argc, char **argv) | |
156 | { | |
157 | unsigned long first = 0, last = 0; | |
158 | int opt; | |
159 | ||
160 | static const struct option longopts[] = { | |
87918040 SK |
161 | {"version", no_argument, NULL, 'V'}, |
162 | {"help", no_argument, NULL, 'h'}, | |
163 | {NULL, 0, NULL, 0} | |
1647d032 SK |
164 | }; |
165 | ||
166 | setlocale(LC_ALL, ""); | |
167 | bindtextdomain(PACKAGE, LOCALEDIR); | |
168 | textdomain(PACKAGE); | |
25b7045e | 169 | close_stdout_atexit(); |
1647d032 SK |
170 | |
171 | while ((opt = | |
172 | getopt_long(argc, argv, "bfhl:pxVH", longopts, | |
173 | NULL)) != -1) | |
174 | switch (opt) { | |
175 | case 'V': | |
2c308875 | 176 | print_version(EXIT_SUCCESS); |
1647d032 | 177 | case 'h': |
86be6a32 | 178 | usage(); |
1647d032 | 179 | default: |
677ec86c | 180 | errtryhelp(EXIT_FAILURE); |
1647d032 SK |
181 | } |
182 | ||
183 | if (argc > 1) | |
184 | first = strtoul_or_err(*++argv, _("first argument")); | |
185 | if (argc > 2) | |
186 | last = strtoul_or_err(*++argv, _("second argument")); | |
187 | ||
188 | while (process_input(first, last)) | |
189 | ; | |
190 | ||
6dbe3af9 | 191 | fflush(stdout); |
1647d032 | 192 | return EXIT_SUCCESS; |
6dbe3af9 | 193 | } |