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Annotation of prex-old/usr/bin/cmdbox/main.c, Revision 1.1.1.1.2.1

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>
1.1.1.1.2.1! nbrk       40: #include <termios.h>
1.1       nbrk       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;
1.1.1.1.2.1! nbrk       57:        if (ioctl(fileno(stderr), TIOCGWINSZ, &ws) == 0)
1.1       nbrk       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: }