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3265 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
2 | * All rights reserved. |
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3 | * Copyright (c) 2008, Jiri Svoboda - 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 are met: |
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7 | * |
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8 | * Redistributions of source code must retain the above copyright notice, this |
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9 | * list of conditions and the following disclaimer. |
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10 | * |
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11 | * Redistributions in binary form must reproduce the above copyright notice, |
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12 | * this list of conditions and the following disclaimer in the documentation |
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13 | * and/or other materials provided with the distribution. |
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14 | * |
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15 | * Neither the name of the original program's authors nor the names of its |
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16 | * contributors may be used to endorse or promote products derived from this |
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17 | * software without specific prior written permission. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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29 | * POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | |||
32 | #include <stdio.h> |
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33 | #include <stdlib.h> |
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34 | #include <string.h> |
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35 | #include <io/stream.h> |
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3767 | svoboda | 36 | #include <console.h> |
4239 | svoboda | 37 | #include <kbd/kbd.h> |
38 | #include <kbd/keycode.h> |
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3265 | post | 39 | |
40 | #include "config.h" |
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41 | #include "util.h" |
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42 | #include "scli.h" |
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43 | #include "input.h" |
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44 | #include "errors.h" |
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45 | #include "exec.h" |
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46 | |||
3372 | post | 47 | static void read_line(char *, int); |
48 | |||
3265 | post | 49 | /* Tokenizes input from console, sees if the first word is a built-in, if so |
50 | * invokes the built-in entry point (a[0]) passing all arguments in a[] to |
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51 | * the handler */ |
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52 | int tok_input(cliuser_t *usr) |
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53 | { |
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54 | char *cmd[WORD_MAX]; |
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55 | int n = 0, i = 0; |
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56 | int rc = 0; |
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3269 | post | 57 | char *tmp; |
3265 | post | 58 | |
3269 | post | 59 | if (NULL == usr->line) |
60 | return CL_EFAIL; |
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3265 | post | 61 | |
3813 | post | 62 | tmp = strdup(usr->line); |
3275 | post | 63 | |
3813 | post | 64 | cmd[n] = strtok(tmp, " "); |
3265 | post | 65 | while (cmd[n] && n < WORD_MAX) { |
3813 | post | 66 | cmd[++n] = strtok(NULL, " "); |
3265 | post | 67 | } |
68 | |||
69 | /* We have rubbish */ |
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70 | if (NULL == cmd[0]) { |
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71 | rc = CL_ENOENT; |
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72 | goto finit; |
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73 | } |
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74 | |||
3809 | post | 75 | /* Its a builtin command ? */ |
3265 | post | 76 | if ((i = (is_builtin(cmd[0]))) > -1) { |
77 | rc = run_builtin(i, cmd, usr); |
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78 | goto finit; |
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3809 | post | 79 | /* Its a module ? */ |
3265 | post | 80 | } else if ((i = (is_module(cmd[0]))) > -1) { |
81 | rc = run_module(i, cmd); |
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82 | goto finit; |
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83 | } |
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84 | |||
3809 | post | 85 | /* See what try_exec thinks of it */ |
86 | rc = try_exec(cmd[0], cmd); |
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87 | |||
3265 | post | 88 | finit: |
89 | if (NULL != usr->line) { |
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90 | free(usr->line); |
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91 | usr->line = (char *) NULL; |
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92 | } |
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3268 | post | 93 | if (NULL != tmp) |
94 | free(tmp); |
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3275 | post | 95 | |
3265 | post | 96 | return rc; |
97 | } |
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98 | |||
3372 | post | 99 | static void read_line(char *buffer, int n) |
3265 | post | 100 | { |
4239 | svoboda | 101 | kbd_event_t ev; |
3265 | post | 102 | int chars; |
103 | |||
104 | chars = 0; |
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105 | while (chars < n - 1) { |
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4239 | svoboda | 106 | fflush(stdout); |
107 | if (kbd_get_event(&ev) < 0) |
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3265 | post | 108 | return; |
4239 | svoboda | 109 | if (ev.type == KE_RELEASE) |
110 | continue; |
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111 | |||
112 | if (ev.key == KC_ENTER || ev.key == KC_NENTER) |
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3265 | post | 113 | break; |
4239 | svoboda | 114 | if (ev.key == KC_BACKSPACE) { |
3265 | post | 115 | if (chars > 0) { |
116 | putchar('\b'); |
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117 | --chars; |
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118 | } |
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119 | continue; |
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120 | } |
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4239 | svoboda | 121 | if (ev.c >= ' ') { |
122 | //putchar(ev.c); |
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123 | console_putchar(ev.c); |
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124 | buffer[chars++] = ev.c; |
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3980 | svoboda | 125 | } |
3265 | post | 126 | } |
127 | putchar('\n'); |
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128 | buffer[chars] = '\0'; |
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129 | } |
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130 | |||
3372 | post | 131 | /* TODO: |
132 | * Implement something like editline() / readline(), if even |
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133 | * just for command history and making arrows work. */ |
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3265 | post | 134 | void get_input(cliuser_t *usr) |
135 | { |
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136 | char line[INPUT_MAX]; |
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137 | size_t len = 0; |
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138 | |||
3767 | svoboda | 139 | console_set_style(STYLE_EMPHASIS); |
3265 | post | 140 | printf("%s", usr->prompt); |
3767 | svoboda | 141 | console_set_style(STYLE_NORMAL); |
142 | |||
3265 | post | 143 | read_line(line, INPUT_MAX); |
144 | len = strlen(line); |
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145 | /* Make sure we don't have rubbish or a C/R happy user */ |
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3275 | post | 146 | if (len == 0 || line[0] == '\n') |
3265 | post | 147 | return; |
3813 | post | 148 | usr->line = strdup(line); |
3304 | post | 149 | |
3265 | post | 150 | return; |
151 | } |
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152 |