Annotation of prex/usr/bin/cmdbox/main.c, Revision 1.1.1.1
1.1 nbrk 1: /*
2: * Copyright (c) 2005-2006, Kohsuke Ohtani
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. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #include <prex/prex.h>
31: #include <sys/utsname.h>
32:
33: #include <limits.h>
34: #include <ctype.h>
35: #include <unistd.h>
36: #include <string.h>
37: #include <stdlib.h>
38: #include <stdio.h>
39: #include <libgen.h>
40: #include <termios.h>
41:
42: #include "cmdbox.h"
43:
44: #ifdef CONFIG_CMD_SH
45: extern int sh_main(int argc, char *argv[]);
46: #endif
47:
48: int
49: help_main(int argc, char *argv[])
50: {
51: struct cmd_entry const *entry;
52: struct winsize ws;
53: int maxcol, col = 0;
54:
55: /* Get screen size */
56: maxcol = 80;
57: if (ioctl(fileno(stderr), TIOCGWINSZ, &ws) == 0)
58: maxcol = (int)ws.ws_col;
59: if (maxcol < 80)
60: maxcol -= 15;
61: else
62: maxcol -= 25;
63:
64: fprintf(stderr, "usage: cmdbox [command] [arguments]...\n");
65: fprintf(stderr, "builtin commands:\n");
66: entry = builtin_cmds;
67: while (entry->cmd != NULL) {
68: col += fprintf(stderr, "%s%s", ((col == 0) ? " " : ", "),
69: entry->cmd);
70: entry++;
71: if (col > maxcol && entry->cmd != NULL) {
72: fprintf(stderr, ",\n");
73: col = 0;
74: }
75: }
76: fprintf(stderr, "\nuse `-?` to find out more about each command.\n");
77: return 0;
78: }
79:
80: static void
81: bannar(void)
82: {
83: struct info_kernel info;
84:
85: sys_info(INFO_KERNEL, &info);
86: printf("%s version %s (%s)\n",
87: info.sysname, info.version, info.machine);
88: }
89:
90: int
91: main(int argc, char *argv[])
92: {
93: static char *shcmd[] = {"sh"};
94: char *prog, *cmd;
95: struct cmd_entry const *entry;
96:
97: prog = basename(argv[0]);
98: if (!strcmp(prog, "cmdbox")) {
99: if (argc == 1) {
100: bannar();
101: #ifdef CONFIG_CMD_SH
102: exit(sh_main(1, shcmd));
103: #else
104: exit(1);
105: #endif
106: } else {
107: cmd = argv[1];
108: argv++;
109: argc--;
110: }
111: } else
112: cmd = prog;
113:
114: entry = builtin_cmds;
115: while (entry->cmd != NULL) {
116: if (!strcmp(cmd, entry->cmd))
117: exit(entry->func(argc, argv));
118: entry++;
119: }
120: return 0;
121: }
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