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3265 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
2 | * All rights reserved. |
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3 | * |
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4 | * Redistribution and use in source and binary forms, with or without |
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5 | * modification, are permitted provided that the following conditions are met: |
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6 | * |
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7 | * Redistributions of source code must retain the above copyright notice, this |
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8 | * list of conditions and the following disclaimer. |
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9 | * |
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10 | * Redistributions in binary form must reproduce the above copyright notice, |
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11 | * this list of conditions and the following disclaimer in the documentation |
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12 | * and/or other materials provided with the distribution. |
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13 | * |
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14 | * Neither the name of the original program's authors nor the names of its |
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15 | * contributors may be used to endorse or promote products derived from this |
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16 | * software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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28 | * POSSIBILITY OF SUCH DAMAGE. |
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29 | */ |
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30 | |||
31 | #include <stdio.h> |
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32 | #include <stdlib.h> |
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33 | #include <string.h> |
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34 | #include <unistd.h> |
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35 | #include "config.h" |
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36 | #include "scli.h" |
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37 | #include "input.h" |
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38 | #include "util.h" |
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39 | #include "errors.h" |
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40 | #include "cmds/cmds.h" |
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41 | |||
42 | #ifndef HELENOS |
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43 | #include <linux/limits.h> |
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44 | #endif |
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45 | |||
46 | /* See scli.h */ |
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47 | static cliuser_t usr; |
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48 | |||
49 | /* Modified by the 'quit' module, which is compiled before this */ |
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50 | extern unsigned int cli_quit; |
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51 | |||
52 | /* Globals that are modified during start-up that modules/builtins should |
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53 | * be aware of. */ |
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54 | volatile unsigned int cli_interactive = 1; |
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55 | volatile unsigned int cli_verbocity = 1; |
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56 | |||
57 | /* The official name of this program |
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58 | * (change to your liking in configure.ac and re-run autoconf) */ |
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59 | const char *progname = PACKAGE_NAME; |
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60 | |||
61 | /* (re)allocates memory to store the current working directory, gets |
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62 | * and updates the current working directory, formats the prompt string */ |
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63 | int cli_set_prompt(cliuser_t *usr) |
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64 | { |
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65 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
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66 | if (NULL == usr->prompt) { |
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67 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
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68 | return 1; |
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69 | } |
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70 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
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71 | |||
72 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
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73 | if (NULL == usr->cwd) { |
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74 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
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75 | return 1; |
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76 | } |
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77 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
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78 | |||
79 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
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80 | if (NULL == usr->cwd) |
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81 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
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82 | |||
83 | if (usr->lasterr != 0) |
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84 | snprintf(usr->prompt, |
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85 | PATH_MAX, |
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86 | "[%lld] %s # ", |
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87 | usr->lasterr, usr->cwd); |
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88 | else |
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89 | snprintf(usr->prompt, |
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90 | PATH_MAX, |
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91 | "%s # ", |
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92 | usr->cwd); |
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93 | |||
94 | return 0; |
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95 | } |
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96 | |||
97 | int cli_init(cliuser_t *usr) |
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98 | { |
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99 | usr->line = (char *) NULL; |
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100 | usr->name = "root"; |
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101 | usr->home = "/"; |
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102 | usr->cwd = (char *) NULL; |
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103 | usr->prompt = (char *) NULL; |
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104 | chdir(usr->home); |
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105 | usr->lasterr = 0; |
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106 | return (int) cli_set_prompt(usr); |
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107 | } |
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108 | |||
109 | /* Destructor */ |
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110 | void cli_finit(cliuser_t *usr) |
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111 | { |
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112 | if (NULL != usr->line) |
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113 | free(usr->line); |
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114 | if (NULL != usr->prompt) |
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115 | free(usr->prompt); |
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116 | if (NULL != usr->cwd) |
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117 | free(usr->cwd); |
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118 | } |
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119 | |||
120 | int main(int argc, char *argv[]) |
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121 | { |
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122 | int ret = 0; |
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123 | int i = 0; |
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124 | |||
125 | if (cli_init(&usr)) |
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126 | exit(EXIT_FAILURE); |
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127 | |||
128 | while (!cli_quit) { |
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129 | cli_set_prompt(&usr); |
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130 | get_input(&usr); |
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131 | if (NULL != usr.line) { |
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132 | ret = tok_input(&usr); |
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133 | usr.lasterr = ret; |
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134 | } |
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135 | i++; |
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136 | } |
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137 | goto finit; |
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138 | |||
139 | finit: |
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140 | cli_finit(&usr); |
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141 | return ret; |
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142 | } |