diff options
Diffstat (limited to 'head.c')
-rw-r--r-- | head.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/head.c b/head.c deleted file mode 100644 index 688c250b1..000000000 --- a/head.c +++ /dev/null | |||
@@ -1,97 +0,0 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * Mini head implementation for busybox | ||
4 | * | ||
5 | * | ||
6 | * Copyright (C) 1999,2000,2001 by Lineo, inc. | ||
7 | * Written by John Beppu <beppu@lineo.com> | ||
8 | * | ||
9 | * This program is free software; you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License as published by | ||
11 | * the Free Software Foundation; either version 2 of the License, or | ||
12 | * (at your option) any later version. | ||
13 | * | ||
14 | * This program is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
17 | * General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with this program; if not, write to the Free Software | ||
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
22 | * | ||
23 | */ | ||
24 | |||
25 | #include <stdio.h> | ||
26 | #include <getopt.h> | ||
27 | #include <stdlib.h> | ||
28 | #include <string.h> | ||
29 | #include "busybox.h" | ||
30 | |||
31 | static int head(int len, FILE *fp) | ||
32 | { | ||
33 | int i; | ||
34 | char *input; | ||
35 | |||
36 | for (i = 0; i < len; i++) { | ||
37 | if ((input = get_line_from_file(fp)) == NULL) | ||
38 | break; | ||
39 | fputs(input, stdout); | ||
40 | free(input); | ||
41 | } | ||
42 | return 0; | ||
43 | } | ||
44 | |||
45 | /* BusyBoxed head(1) */ | ||
46 | int head_main(int argc, char **argv) | ||
47 | { | ||
48 | FILE *fp; | ||
49 | int need_headers, opt, len = 10, status = EXIT_SUCCESS; | ||
50 | |||
51 | /* parse argv[] */ | ||
52 | while ((opt = getopt(argc, argv, "n:")) > 0) { | ||
53 | switch (opt) { | ||
54 | case 'n': | ||
55 | len = atoi(optarg); | ||
56 | if (len >= 1) | ||
57 | break; | ||
58 | /* fallthrough */ | ||
59 | default: | ||
60 | show_usage(); | ||
61 | } | ||
62 | } | ||
63 | |||
64 | /* get rest of argv[] or stdin if nothing's left */ | ||
65 | if (argv[optind] == NULL) { | ||
66 | head(len, stdin); | ||
67 | return status; | ||
68 | } | ||
69 | |||
70 | need_headers = optind != (argc - 1); | ||
71 | while (argv[optind]) { | ||
72 | if (strcmp(argv[optind], "-") == 0) { | ||
73 | fp = stdin; | ||
74 | argv[optind] = "standard input"; | ||
75 | } else { | ||
76 | if ((fp = wfopen(argv[optind], "r")) == NULL) | ||
77 | status = EXIT_FAILURE; | ||
78 | } | ||
79 | if (fp) { | ||
80 | if (need_headers) { | ||
81 | printf("==> %s <==\n", argv[optind]); | ||
82 | } | ||
83 | head(len, fp); | ||
84 | if (ferror(fp)) { | ||
85 | perror_msg("%s", argv[optind]); | ||
86 | status = EXIT_FAILURE; | ||
87 | } | ||
88 | if (optind < argc - 1) | ||
89 | putchar('\n'); | ||
90 | if (fp != stdin) | ||
91 | fclose(fp); | ||
92 | } | ||
93 | optind++; | ||
94 | } | ||
95 | |||
96 | return status; | ||
97 | } | ||