scoutos / prex-0.9.0 / usr / bin / cmdbox / main.c @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*
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2 | * Copyright (c) 2005-2006, Kohsuke Ohtani
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the author nor the names of any co-contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | */
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29 | |||
30 | #include <sys/prex.h> |
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31 | |||
32 | #include <limits.h> |
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33 | #include <ctype.h> |
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34 | #include <unistd.h> |
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35 | #include <string.h> |
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36 | #include <stdlib.h> |
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37 | #include <stdio.h> |
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38 | #include <libgen.h> |
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39 | #include <termios.h> |
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40 | |||
41 | #include "cmdbox.h" |
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42 | |||
43 | #ifdef CONFIG_CMD_SH
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44 | extern int sh_main(int argc, char *argv[]); |
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45 | #endif
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46 | |||
47 | int
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48 | null_main(int argc, char *argv[]) |
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49 | { |
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50 | return -1; |
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51 | } |
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52 | |||
53 | int
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54 | help_main(int argc, char *argv[]) |
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55 | { |
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56 | struct cmdentry const *entry; |
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57 | struct winsize ws;
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58 | int maxcol, col = 0; |
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59 | |||
60 | /* Get screen size */
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61 | maxcol = 80;
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62 | if (ioctl(fileno(stderr), TIOCGWINSZ, &ws) == 0) |
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63 | maxcol = (int)ws.ws_col;
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64 | if (maxcol < 80) |
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65 | maxcol -= 15;
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66 | else
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67 | maxcol -= 25;
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68 | |||
69 | fprintf(stderr, "usage: cmdbox [command] [arguments]...\n");
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70 | fprintf(stderr, "builtin commands:\n");
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71 | |||
72 | /*
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73 | * Show help for builtin commands.
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74 | */
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75 | entry = builtin_cmds; |
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76 | while (entry->cmd != NULL) { |
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77 | col += fprintf(stderr, "%s%s", ((col == 0) ? " " : ", "), |
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78 | entry->cmd); |
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79 | entry++; |
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80 | if (col > maxcol && entry->cmd != NULL) { |
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81 | fprintf(stderr, ",\n");
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82 | col = 0;
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83 | } |
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84 | } |
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85 | |||
86 | #ifdef CONFIG_CMD_SH
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87 | /*
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88 | * Show help for shell commands.
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89 | */
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90 | entry = shell_cmds; |
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91 | while (entry->cmd != NULL) { |
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92 | col += fprintf(stderr, "%s%s", ((col == 0) ? " " : ", "), |
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93 | entry->cmd); |
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94 | entry++; |
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95 | if (col > maxcol && entry->cmd != NULL) { |
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96 | fprintf(stderr, ",\n");
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97 | col = 0;
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98 | } |
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99 | } |
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100 | #endif
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101 | fprintf(stderr, "\nuse `-?` to find out more about each command.\n");
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102 | return 0; |
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103 | } |
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104 | |||
105 | int
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106 | main(int argc, char *argv[]) |
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107 | { |
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108 | char *prog, *cmd;
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109 | struct cmdentry const *entry; |
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110 | int shcmd = 0; |
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111 | |||
112 | prog = basename(argv[0]);
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113 | cmd = prog; |
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114 | |||
115 | /*
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116 | * Alias:
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117 | * 'sh' => sh
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118 | * 'cmdbox' => sh
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119 | * 'cmdbox sh' => sh
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120 | * 'cmdbox cmd' => cmd
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121 | * 'cmd' (symlink) => cmd
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122 | */
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123 | if (!strcmp(prog, "sh")) |
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124 | shcmd = 1;
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125 | else if (!strcmp(prog, "cmdbox")) { |
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126 | if (argc == 1) |
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127 | shcmd = 1;
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128 | else {
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129 | if (!strcmp(argv[1], "sh")) |
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130 | shcmd = 1;
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131 | else
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132 | cmd = argv[1];
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133 | argv++; |
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134 | argc--; |
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135 | } |
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136 | } |
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137 | |||
138 | if (shcmd) {
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139 | task_setname(task_self(), "sh");
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140 | exit(sh_main(argc, argv)); |
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141 | } |
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142 | |||
143 | entry = builtin_cmds; |
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144 | while (entry->cmd != NULL) { |
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145 | if (!strcmp(cmd, entry->cmd)) {
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146 | task_setname(task_self(), cmd); |
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147 | exit(entry->func(argc, argv)); |
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148 | } |
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149 | entry++; |
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150 | } |
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151 | fprintf(stderr, "No such command: %s\n", cmd);
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152 | return 0; |
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153 | } |