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| Rev | Author | Line No. | Line |
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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> |
| 3265 | post | 37 | |
| 38 | #include "config.h" |
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| 39 | #include "util.h" |
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| 40 | #include "scli.h" |
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| 41 | #include "input.h" |
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| 42 | #include "errors.h" |
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| 43 | #include "exec.h" |
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| 44 | |||
| 3372 | post | 45 | static void read_line(char *, int); |
| 46 | |||
| 3265 | post | 47 | /* Tokenizes input from console, sees if the first word is a built-in, if so |
| 48 | * invokes the built-in entry point (a[0]) passing all arguments in a[] to |
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| 49 | * the handler */ |
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| 50 | int tok_input(cliuser_t *usr) |
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| 51 | { |
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| 52 | char *cmd[WORD_MAX]; |
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| 53 | int n = 0, i = 0; |
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| 54 | int rc = 0; |
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| 3269 | post | 55 | char *tmp; |
| 3265 | post | 56 | |
| 3269 | post | 57 | if (NULL == usr->line) |
| 58 | return CL_EFAIL; |
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| 3265 | post | 59 | |
| 3813 | post | 60 | tmp = strdup(usr->line); |
| 3275 | post | 61 | |
| 3813 | post | 62 | cmd[n] = strtok(tmp, " "); |
| 3265 | post | 63 | while (cmd[n] && n < WORD_MAX) { |
| 3813 | post | 64 | cmd[++n] = strtok(NULL, " "); |
| 3265 | post | 65 | } |
| 66 | |||
| 67 | /* We have rubbish */ |
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| 68 | if (NULL == cmd[0]) { |
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| 69 | rc = CL_ENOENT; |
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| 70 | goto finit; |
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| 71 | } |
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| 72 | |||
| 3809 | post | 73 | /* Its a builtin command ? */ |
| 3265 | post | 74 | if ((i = (is_builtin(cmd[0]))) > -1) { |
| 75 | rc = run_builtin(i, cmd, usr); |
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| 76 | goto finit; |
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| 3809 | post | 77 | /* Its a module ? */ |
| 3265 | post | 78 | } else if ((i = (is_module(cmd[0]))) > -1) { |
| 79 | rc = run_module(i, cmd); |
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| 80 | goto finit; |
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| 81 | } |
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| 82 | |||
| 3809 | post | 83 | /* See what try_exec thinks of it */ |
| 84 | rc = try_exec(cmd[0], cmd); |
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| 85 | |||
| 3265 | post | 86 | finit: |
| 87 | if (NULL != usr->line) { |
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| 88 | free(usr->line); |
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| 89 | usr->line = (char *) NULL; |
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| 90 | } |
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| 3268 | post | 91 | if (NULL != tmp) |
| 92 | free(tmp); |
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| 3275 | post | 93 | |
| 3265 | post | 94 | return rc; |
| 95 | } |
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| 96 | |||
| 97 | /* Borrowed from Jiri Svoboda's 'cli' uspace app */ |
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| 3372 | post | 98 | static void read_line(char *buffer, int n) |
| 3265 | post | 99 | { |
| 100 | char c; |
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| 101 | int chars; |
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| 102 | |||
| 103 | chars = 0; |
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| 104 | while (chars < n - 1) { |
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| 105 | c = getchar(); |
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| 106 | if (c < 0) |
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| 107 | return; |
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| 108 | if (c == '\n') |
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| 109 | break; |
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| 110 | if (c == '\b') { |
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| 111 | if (chars > 0) { |
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| 112 | putchar('\b'); |
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| 113 | --chars; |
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| 114 | } |
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| 115 | continue; |
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| 116 | } |
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| 117 | putchar(c); |
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| 118 | buffer[chars++] = c; |
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| 119 | } |
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| 120 | putchar('\n'); |
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| 121 | buffer[chars] = '\0'; |
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| 122 | } |
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| 123 | |||
| 3372 | post | 124 | /* TODO: |
| 125 | * Implement something like editline() / readline(), if even |
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| 126 | * just for command history and making arrows work. */ |
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| 3265 | post | 127 | void get_input(cliuser_t *usr) |
| 128 | { |
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| 129 | char line[INPUT_MAX]; |
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| 130 | size_t len = 0; |
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| 131 | |||
| 3767 | svoboda | 132 | console_set_style(STYLE_EMPHASIS); |
| 3265 | post | 133 | printf("%s", usr->prompt); |
| 3767 | svoboda | 134 | console_set_style(STYLE_NORMAL); |
| 135 | |||
| 3265 | post | 136 | read_line(line, INPUT_MAX); |
| 137 | len = strlen(line); |
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| 138 | /* Make sure we don't have rubbish or a C/R happy user */ |
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| 3275 | post | 139 | if (len == 0 || line[0] == '\n') |
| 3265 | post | 140 | return; |
| 3813 | post | 141 | usr->line = strdup(line); |
| 3304 | post | 142 | |
| 3265 | post | 143 | return; |
| 144 | } |
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| 145 |