amiro-os / core / src / aos_shell.c @ 4cb40108
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1 | e545e620 | Thomas Schöpping | /*
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2 | AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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3 | 84f0ce9e | Thomas Schöpping | Copyright (C) 2016..2019 Thomas Schöpping et al.
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4 | e545e620 | Thomas Schöpping | |
5 | This program is free software: you can redistribute it and/or modify
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6 | it under the terms of the GNU General Public License as published by
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7 | the Free Software Foundation, either version 3 of the License, or
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8 | (at your option) any later version.
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9 | |||
10 | This program is distributed in the hope that it will be useful,
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | GNU General Public License for more details.
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14 | |||
15 | You should have received a copy of the GNU General Public License
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16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 | |||
19 | 53710ca3 | Marc Rothmann | /**
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20 | * @file aos_shell.c
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21 | * @brief Shell code.
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22 | * @details Shell code as well as shell related channels and streams.
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23 | *
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24 | * @addtogroup aos_shell
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25 | * @{
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26 | */
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27 | |||
28 | 3940ba8a | Thomas Schöpping | #include <amiroos.h> |
29 | #include <string.h> |
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30 | e545e620 | Thomas Schöpping | |
31 | 2dd2e257 | Thomas Schöpping | #if (AMIROOS_CFG_SHELL_ENABLE == true) || (AMIROOS_CFG_TESTS_ENABLE == true) |
32 | 3940ba8a | Thomas Schöpping | |
33 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
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34 | /* LOCAL DEFINITIONS */
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35 | /******************************************************************************/
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36 | ba516b61 | Thomas Schöpping | |
37 | /**
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38 | * @brief Event mask to be set on OS related events.
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39 | */
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40 | #define AOS_SHELL_EVENTMASK_OS EVENT_MASK(0) |
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41 | |||
42 | /**
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43 | * @brief Event mask to be set on a input event.
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44 | */
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45 | #define AOS_SHELL_EVENTMASK_INPUT EVENT_MASK(1) |
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46 | |||
47 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
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48 | /* EXPORTED VARIABLES */
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49 | /******************************************************************************/
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50 | |||
51 | /******************************************************************************/
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52 | /* LOCAL TYPES */
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53 | /******************************************************************************/
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54 | |||
55 | /*
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56 | * forward declarations
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57 | */
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58 | static size_t _channelwrite(void *instance, const uint8_t *bp, size_t n); |
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59 | static size_t _channelread(void *instance, uint8_t *bp, size_t n); |
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60 | static msg_t _channelput(void *instance, uint8_t b); |
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61 | static msg_t _channelget(void *instance); |
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62 | static msg_t _channelputt(void *instance, uint8_t b, sysinterval_t time); |
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63 | static msg_t _channelgett(void *instance, sysinterval_t time); |
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64 | static size_t _channelwritet(void *instance, const uint8_t *bp, size_t n, sysinterval_t time); |
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65 | static size_t _channelreadt(void *instance, uint8_t *bp, size_t n, sysinterval_t time); |
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66 | static msg_t _channelctl(void *instance, unsigned int operation, void *arg); |
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67 | static size_t _streamwrite(void *instance, const uint8_t *bp, size_t n); |
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68 | static size_t _stremread(void *instance, uint8_t *bp, size_t n); |
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69 | static msg_t _streamput(void *instance, uint8_t b); |
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70 | static msg_t _streamget(void *instance); |
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71 | |||
72 | static const struct AosShellChannelVMT _channelvmt = { |
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73 | (size_t) 0,
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74 | _channelwrite, |
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75 | _channelread, |
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76 | _channelput, |
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77 | _channelget, |
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78 | _channelputt, |
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79 | _channelgett, |
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80 | _channelwritet, |
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81 | _channelreadt, |
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82 | _channelctl, |
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83 | }; |
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84 | |||
85 | static const struct AosShellStreamVMT _streamvmt = { |
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86 | (size_t) 0,
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87 | _streamwrite, |
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88 | _stremread, |
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89 | _streamput, |
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90 | _streamget, |
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91 | }; |
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92 | |||
93 | /**
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94 | * @brief Enumerator of special keyboard keys.
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95 | */
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96 | typedef enum special_key { |
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97 | KEY_UNKNOWN, /**< any/unknow key */
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98 | KEY_AMBIGUOUS, /**< key is ambiguous */
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99 | KEY_TAB, /**< tabulator key */
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100 | KEY_ESCAPE, /**< escape key */
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101 | KEY_BACKSPACE, /**< backspace key */
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102 | KEY_INSERT, /**< insert key */
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103 | KEY_DELETE, /**< delete key */
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104 | KEY_HOME, /**< home key */
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105 | KEY_END, /**< end key */
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106 | KEY_PAGE_UP, /**< page up key */
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107 | KEY_PAGE_DOWN, /**< page down key */
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108 | KEY_ARROW_UP, /**< arrow up key */
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109 | KEY_ARROW_DOWN, /**< arrow down key */
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110 | KEY_ARROW_LEFT, /**< arrow left key */
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111 | KEY_ARROW_RIGHT, /**< arrow right key */
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112 | } special_key_t; |
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113 | |||
114 | /**
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115 | * @brief Enumerator for case (in)sensitive character matching.
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116 | */
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117 | typedef enum charmatch { |
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118 | CHAR_MATCH_NOT = 0, /**< Characters do not match at all. */ |
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119 | CHAR_MATCH_NCASE = 1, /**< Characters would match case insensitive. */ |
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120 | CHAR_MATCH_CASE = 2, /**< Characters do match with case. */ |
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121 | } charmatch_t; |
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122 | |||
123 | /******************************************************************************/
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124 | /* LOCAL VARIABLES */
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125 | /******************************************************************************/
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126 | |||
127 | /******************************************************************************/
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128 | /* LOCAL FUNCTIONS */
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129 | /******************************************************************************/
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130 | |||
131 | ba516b61 | Thomas Schöpping | /**
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132 | * @brief Implementation of the BaseAsynchronous write() method (inherited from BaseSequentialStream).
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133 | */
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134 | static size_t _channelwrite(void *instance, const uint8_t *bp, size_t n) |
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135 | { |
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136 | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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137 | dd8738ea | Thomas Schöpping | return streamWrite(((AosShellChannel*)instance)->asyncchannel, bp, n);
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138 | ba516b61 | Thomas Schöpping | } else {
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139 | return 0; |
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140 | } |
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141 | } |
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142 | |||
143 | /**
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144 | * @brief Implementation of the BaseAsynchronous read() method (inherited from BaseSequentialStream).
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145 | */
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146 | static size_t _channelread(void *instance, uint8_t *bp, size_t n) |
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147 | { |
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148 | dd8738ea | Thomas Schöpping | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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149 | return streamRead(((AosShellChannel*)instance)->asyncchannel, bp, n);
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150 | } else {
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151 | return 0; |
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152 | } |
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153 | ba516b61 | Thomas Schöpping | } |
154 | |||
155 | /**
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156 | * @brief Implementation of the BaseAsynchronous put() method (inherited from BaseSequentialStream).
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157 | */
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158 | static msg_t _channelput(void *instance, uint8_t b) |
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159 | { |
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160 | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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161 | dd8738ea | Thomas Schöpping | return streamPut(((AosShellChannel*)instance)->asyncchannel, b);
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162 | ba516b61 | Thomas Schöpping | } else {
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163 | return MSG_RESET;
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164 | } |
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165 | } |
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166 | |||
167 | /**
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168 | * @brief Implementation of the BaseAsynchronous get() method (inherited from BaseSequentialStream).
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169 | */
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170 | static msg_t _channelget(void *instance) |
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171 | { |
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172 | dd8738ea | Thomas Schöpping | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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173 | return streamGet(((AosShellChannel*)instance)->asyncchannel);
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174 | } else {
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175 | return MSG_RESET;
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176 | } |
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177 | ba516b61 | Thomas Schöpping | } |
178 | |||
179 | /**
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180 | * @brief Implementation of the BaseAsynchronous putt() method.
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181 | */
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182 | 2c99037f | Marc Rothmann | static msg_t _channelputt(void *instance, uint8_t b, sysinterval_t time) |
183 | ba516b61 | Thomas Schöpping | { |
184 | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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185 | dd8738ea | Thomas Schöpping | return chnPutTimeout(((AosShellChannel*)instance)->asyncchannel, b, time);
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186 | ba516b61 | Thomas Schöpping | } else {
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187 | return MSG_RESET;
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188 | } |
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189 | } |
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190 | |||
191 | /**
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192 | * @brief Implementation of the BaseAsynchronous gett() method.
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193 | */
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194 | 2c99037f | Marc Rothmann | static msg_t _channelgett(void *instance, sysinterval_t time) |
195 | ba516b61 | Thomas Schöpping | { |
196 | dd8738ea | Thomas Schöpping | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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197 | return chnGetTimeout(((AosShellChannel*)instance)->asyncchannel, time);
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198 | } else {
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199 | return MSG_RESET;
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200 | } |
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201 | ba516b61 | Thomas Schöpping | } |
202 | |||
203 | /**
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204 | * @brief Implementation of the BaseAsynchronous writet() method.
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205 | */
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206 | 2c99037f | Marc Rothmann | static size_t _channelwritet(void *instance, const uint8_t *bp, size_t n, sysinterval_t time) |
207 | ba516b61 | Thomas Schöpping | { |
208 | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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209 | dd8738ea | Thomas Schöpping | return chnWriteTimeout(((AosShellChannel*)instance)->asyncchannel, bp, n, time);
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210 | ba516b61 | Thomas Schöpping | } else {
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211 | return 0; |
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212 | } |
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213 | } |
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214 | |||
215 | /**
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216 | * @brief Implementation of the BaseAsynchronous readt() method.
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217 | */
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218 | 2c99037f | Marc Rothmann | static size_t _channelreadt(void *instance, uint8_t *bp, size_t n, sysinterval_t time) |
219 | ba516b61 | Thomas Schöpping | { |
220 | dd8738ea | Thomas Schöpping | if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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221 | return chnReadTimeout(((AosShellChannel*)instance)->asyncchannel, bp, n, time);
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222 | } else {
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223 | return 0; |
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224 | } |
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225 | ba516b61 | Thomas Schöpping | } |
226 | |||
227 | 2c99037f | Marc Rothmann | /**
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228 | * @brief Implementation of the BaseAsynchronousChannel ctl() method.
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229 | */
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230 | f3ac1c96 | Thomas Schöpping | static msg_t _channelctl(void *instance, unsigned int operation, void *arg) |
231 | { |
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232 | 2c99037f | Marc Rothmann | (void) instance;
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233 | |||
234 | switch (operation) {
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235 | case CHN_CTL_NOP:
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236 | osalDbgCheck(arg == NULL);
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237 | break;
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238 | case CHN_CTL_INVALID:
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239 | osalDbgAssert(false, "invalid CTL operation"); |
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240 | break;
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241 | default:
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242 | break;
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243 | } |
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244 | return MSG_OK;
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245 | } |
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246 | |||
247 | ba516b61 | Thomas Schöpping | static size_t _streamwrite(void *instance, const uint8_t *bp, size_t n) |
248 | { |
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249 | aosDbgCheck(instance != NULL);
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250 | |||
251 | // local variables
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252 | AosShellChannel* channel = ((AosShellStream*)instance)->channel; |
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253 | size_t bytes; |
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254 | size_t maxbytes = 0;
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255 | |||
256 | // iterate through the list of channels
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257 | while (channel != NULL) { |
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258 | bytes = streamWrite(channel, bp, n); |
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259 | maxbytes = (bytes > maxbytes) ? bytes : maxbytes; |
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260 | channel = channel->next; |
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261 | } |
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262 | |||
263 | return maxbytes;
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264 | } |
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265 | |||
266 | static size_t _stremread(void *instance, uint8_t *bp, size_t n) |
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267 | { |
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268 | (void)instance;
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269 | (void)bp;
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270 | (void)n;
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271 | |||
272 | return 0; |
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273 | } |
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274 | |||
275 | static msg_t _streamput(void *instance, uint8_t b) |
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276 | { |
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277 | aosDbgCheck(instance != NULL);
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278 | |||
279 | // local variables
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280 | AosShellChannel* channel = ((AosShellStream*)instance)->channel; |
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281 | dd8738ea | Thomas Schöpping | msg_t ret = MSG_OK; |
282 | ba516b61 | Thomas Schöpping | |
283 | // iterate through the list of channels
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284 | while (channel != NULL) { |
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285 | dd8738ea | Thomas Schöpping | msg_t ret_ = streamPut(channel, b); |
286 | ret = (ret_ < ret) ? ret_ : ret; |
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287 | ba516b61 | Thomas Schöpping | channel = channel->next; |
288 | } |
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289 | |||
290 | dd8738ea | Thomas Schöpping | return ret;
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291 | ba516b61 | Thomas Schöpping | } |
292 | |||
293 | static msg_t _streamget(void *instance) |
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294 | { |
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295 | (void)instance;
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296 | |||
297 | return 0; |
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298 | } |
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299 | |||
300 | e545e620 | Thomas Schöpping | /**
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301 | * @brief Print the shell prompt
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302 | * @details Depending on the configuration flags, the system uptime is printed before the prompt string.
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303 | *
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304 | * @param[in] shell Pointer to the shell object.
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305 | */
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306 | static void _printPrompt(aos_shell_t* shell) |
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307 | { |
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308 | aosDbgCheck(shell != NULL);
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309 | |||
310 | 8399aeae | Thomas Schöpping | // print some time informattion before prompt if configured
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311 | if (shell->config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) {
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312 | // printf the system uptime
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313 | if ((shell->config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) == AOS_SHELL_CONFIG_PROMPT_UPTIME) {
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314 | // get current system uptime
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315 | aos_timestamp_t uptime; |
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316 | aosSysGetUptime(&uptime); |
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317 | |||
318 | chprintf((BaseSequentialStream*)&shell->stream, "[%01u:%02u:%02u:%02u:%03u:%03u] ",
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319 | (uint32_t)(uptime / MICROSECONDS_PER_DAY), |
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320 | (uint8_t)(uptime % MICROSECONDS_PER_DAY / MICROSECONDS_PER_HOUR), |
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321 | (uint8_t)(uptime % MICROSECONDS_PER_HOUR / MICROSECONDS_PER_MINUTE), |
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322 | (uint8_t)(uptime % MICROSECONDS_PER_MINUTE / MICROSECONDS_PER_SECOND), |
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323 | (uint16_t)(uptime % MICROSECONDS_PER_SECOND / MICROSECONDS_PER_MILLISECOND), |
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324 | (uint16_t)(uptime % MICROSECONDS_PER_MILLISECOND / MICROSECONDS_PER_MICROSECOND)); |
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325 | } |
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326 | 23437e98 | Thomas Schöpping | #if (HAL_USE_RTC == TRUE)
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327 | 8399aeae | Thomas Schöpping | else if ((shell->config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) == AOS_SHELL_CONFIG_PROMPT_DATETIME) { |
328 | // get current RTC time
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329 | struct tm dt;
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330 | aosSysGetDateTime(&dt); |
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331 | chprintf((BaseSequentialStream*)&shell->stream, "[%02u-%02u-%04u|%02u:%02u:%02u] ",
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332 | dt.tm_mday, |
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333 | dt.tm_mon + 1,
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334 | dt.tm_year + 1900,
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335 | dt.tm_hour, |
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336 | dt.tm_min, |
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337 | dt.tm_sec); |
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338 | } |
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339 | 7de0cc90 | Thomas Schöpping | #endif /* (HAL_USE_RTC == TRUE) */ |
340 | 8399aeae | Thomas Schöpping | else {
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341 | aosDbgAssert(false);
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342 | } |
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343 | e545e620 | Thomas Schöpping | } |
344 | |||
345 | // print the actual prompt string
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346 | if (shell->prompt && !(shell->config & AOS_SHELL_CONFIG_PROMPT_MINIMAL)) {
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347 | ba516b61 | Thomas Schöpping | chprintf((BaseSequentialStream*)&shell->stream, "%s$ ", shell->prompt);
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348 | e545e620 | Thomas Schöpping | } else {
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349 | ba516b61 | Thomas Schöpping | chprintf((BaseSequentialStream*)&shell->stream, "%>$ ");
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350 | e545e620 | Thomas Schöpping | } |
351 | |||
352 | return;
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353 | } |
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354 | |||
355 | /**
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356 | * @brief Interprete a escape sequence
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357 | d96ce104 | Thomas Schöpping | * @details This function interpretes escape sequences (starting with ASCII
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358 | * "Escape" character 0x1B) according to the VT100 / VT52 ANSI escape
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359 | * sequence definitions.
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360 | * @note Only the most important escape sequences are implemented yet.
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361 | e545e620 | Thomas Schöpping | *
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362 | * @param[in] seq Character sequence to interprete.
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363 | * Must be terminated by NUL byte.
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364 | *
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365 | * @return A @p special_key value.
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366 | */
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367 | static special_key_t _interpreteEscapeSequence(const char seq[]) |
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368 | { |
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369 | // local variables
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370 | bool ambiguous = false; |
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371 | int cmp = 0; |
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372 | |||
373 | // TAB
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374 | /* not supported yet; use "\x09" instead */
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375 | |||
376 | // BACKSPACE
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377 | /* not supported yet; use "\x08" instead */
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378 | |||
379 | // ESCAPE
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380 | cmp = strcmp(seq, "\x1B");
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381 | if (cmp == 0) { |
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382 | return KEY_ESCAPE;
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383 | } else {
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384 | ambiguous |= (cmp < 0);
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385 | } |
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386 | |||
387 | // INSERT
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388 | cmp = strcmp(seq, "\x1B\x5B\x32\x7E");
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389 | if (cmp == 0) { |
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390 | return KEY_INSERT;
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391 | } else {
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392 | ambiguous |= (cmp < 0);
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393 | } |
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394 | |||
395 | // DELETE
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396 | cmp = strcmp(seq, "\x1B\x5B\x33\x7E");
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397 | if (cmp == 0) { |
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398 | return KEY_DELETE;
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399 | } else {
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400 | ambiguous |= (cmp < 0);
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401 | } |
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402 | |||
403 | // HOME
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404 | d96ce104 | Thomas Schöpping | cmp = strcmp(seq, "\x1B\x5B\x48");
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405 | e545e620 | Thomas Schöpping | if (cmp == 0) { |
406 | return KEY_HOME;
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407 | } else {
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408 | ambiguous |= (cmp < 0);
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409 | } |
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410 | |||
411 | // END
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412 | d96ce104 | Thomas Schöpping | cmp = strcmp(seq, "\x1B\x5B\x46");
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413 | e545e620 | Thomas Schöpping | if (cmp == 0) { |
414 | return KEY_END;
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415 | } else {
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416 | ambiguous |= (cmp < 0);
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417 | } |
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418 | |||
419 | // PAGE UP
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420 | cmp = strcmp(seq, "\x1B\x5B\x35\x7E");
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421 | if (cmp == 0) { |
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422 | return KEY_PAGE_UP;
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423 | } else {
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424 | ambiguous |= (cmp < 0);
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425 | } |
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426 | |||
427 | // PAGE DOWN
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428 | cmp = strcmp(seq, "\x1B\x5B\x36\x7E");
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429 | if (cmp == 0) { |
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430 | return KEY_PAGE_DOWN;
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431 | } else {
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432 | ambiguous |= (cmp < 0);
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433 | } |
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434 | |||
435 | // ARROW UP
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436 | cmp = strcmp(seq, "\x1B\x5B\x41");
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437 | if (cmp == 0) { |
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438 | return KEY_ARROW_UP;
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439 | } else {
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440 | ambiguous |= (cmp < 0);
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441 | } |
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442 | |||
443 | // ARROW DOWN
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444 | cmp = strcmp(seq, "\x1B\x5B\x42");
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445 | if (cmp == 0) { |
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446 | return KEY_ARROW_DOWN;
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447 | } else {
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448 | ambiguous |= (cmp < 0);
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449 | } |
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450 | |||
451 | // ARROW LEFT
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452 | cmp = strcmp(seq, "\x1B\x5B\x44");
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453 | if (cmp == 0) { |
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454 | return KEY_ARROW_LEFT;
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455 | } else {
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456 | ambiguous |= (cmp < 0);
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457 | } |
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458 | |||
459 | // ARROW RIGHT
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460 | cmp = strcmp(seq, "\x1B\x5B\x43");
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461 | if (cmp == 0) { |
||
462 | return KEY_ARROW_RIGHT;
|
||
463 | } else {
|
||
464 | ambiguous |= (cmp < 0);
|
||
465 | } |
||
466 | |||
467 | return ambiguous ? KEY_AMBIGUOUS : KEY_UNKNOWN;
|
||
468 | } |
||
469 | |||
470 | /**
|
||
471 | * @brief Move the cursor in the terminal
|
||
472 | *
|
||
473 | * @param[in] shell Pointer to the shell object.
|
||
474 | * @param[in] from Starting position of the cursor.
|
||
475 | * @param[in] to Target position to move the cursor to.
|
||
476 | *
|
||
477 | * @return The number of positions moved.
|
||
478 | */
|
||
479 | static int _moveCursor(aos_shell_t* shell, const size_t from, const size_t to) |
||
480 | { |
||
481 | aosDbgCheck(shell != NULL);
|
||
482 | |||
483 | // local variables
|
||
484 | size_t pos = from; |
||
485 | |||
486 | // move cursor left by printing backspaces
|
||
487 | while (pos > to) {
|
||
488 | ba516b61 | Thomas Schöpping | streamPut(&shell->stream, '\b');
|
489 | e545e620 | Thomas Schöpping | --pos; |
490 | } |
||
491 | |||
492 | // move cursor right by printing line content
|
||
493 | while (pos < to) {
|
||
494 | ba516b61 | Thomas Schöpping | streamPut(&shell->stream, shell->line[pos]); |
495 | e545e620 | Thomas Schöpping | ++pos; |
496 | } |
||
497 | |||
498 | return (int)pos - (int)from; |
||
499 | } |
||
500 | |||
501 | /**
|
||
502 | * @brief Print content of the shell line
|
||
503 | *
|
||
504 | * @param[in] shell Pointer to the shell object.
|
||
505 | * @param[in] from First position to start printing from.
|
||
506 | * @param[in] to Position after the last character to print.
|
||
507 | *
|
||
508 | * @return Number of characters printed.
|
||
509 | */
|
||
510 | static inline size_t _printLine(aos_shell_t* shell, const size_t from, const size_t to) |
||
511 | { |
||
512 | aosDbgCheck(shell != NULL);
|
||
513 | |||
514 | // local variables
|
||
515 | size_t cnt; |
||
516 | |||
517 | for (cnt = 0; from + cnt < to; ++cnt) { |
||
518 | ba516b61 | Thomas Schöpping | streamPut(&shell->stream, shell->line[from + cnt]); |
519 | e545e620 | Thomas Schöpping | } |
520 | |||
521 | return cnt;
|
||
522 | } |
||
523 | |||
524 | /**
|
||
525 | * @brief Compare two characters.
|
||
526 | *
|
||
527 | * @param[in] lhs First character to compare.
|
||
528 | * @param[in] rhs Second character to compare.
|
||
529 | *
|
||
530 | * @return How well the characters match.
|
||
531 | */
|
||
532 | static inline charmatch_t _charcmp(char lhs, char rhs) |
||
533 | { |
||
534 | // if lhs is a upper case letter and rhs is a lower case letter
|
||
535 | if (lhs >= 'A' && lhs <= 'Z' && rhs >= 'a' && rhs <= 'z') { |
||
536 | return (lhs == (rhs - 'a' + 'A')) ? CHAR_MATCH_NCASE : CHAR_MATCH_NOT; |
||
537 | } |
||
538 | // if lhs is a lower case letter and rhs is a upper case letter
|
||
539 | else if (lhs >= 'a' && lhs <= 'z' && rhs >= 'A' && rhs <= 'Z') { |
||
540 | return ((lhs - 'a' + 'A') == rhs) ? CHAR_MATCH_NCASE : CHAR_MATCH_NOT; |
||
541 | } |
||
542 | // default
|
||
543 | else {
|
||
544 | return (lhs == rhs) ? CHAR_MATCH_CASE : CHAR_MATCH_NOT;
|
||
545 | } |
||
546 | } |
||
547 | |||
548 | /**
|
||
549 | * @brief Maps an character from ASCII to a modified custom encoding.
|
||
550 | * @details The custom character encoding is very similar to ASCII and has the following structure:
|
||
551 | * 0x00=NULL ... 0x40='@' (identically to ASCII)
|
||
552 | * 0x4A='a'; 0x4B='A'; 0x4C='b'; 0x4D='B' ... 0x73='z'; 0x74='Z' (custom letter order)
|
||
553 | * 0x75='[' ... 0x7A='`' (0x5B..0x60 is ASCII)
|
||
554 | * 0x7B='{' ... 0x7F=DEL (identically to ASCII)
|
||
555 | *
|
||
556 | * @param[in] c Character to map to the custom encoding.
|
||
557 | *
|
||
558 | * @return The customly encoded character.
|
||
559 | */
|
||
560 | static inline char _mapAscii2Custom(const char c) |
||
561 | { |
||
562 | if (c >= 'A' && c <= 'Z') { |
||
563 | return ((c - 'A') * 2) + 'A' + 1; |
||
564 | } else if (c > 'Z' && c < 'a') { |
||
565 | return c + ('z' - 'a') + 1; |
||
566 | } else if (c >= 'a' && c <= 'z') { |
||
567 | return ((c - 'a') * 2) + 'A'; |
||
568 | } else {
|
||
569 | return c;
|
||
570 | } |
||
571 | } |
||
572 | |||
573 | /**
|
||
574 | * @brief Compares two strings wrt letter case.
|
||
575 | * @details Comparisson uses a custom character encoding or mapping.
|
||
576 | * See @p _mapAscii2Custom for details.
|
||
577 | *
|
||
578 | * @param[in] str1 First string to compare.
|
||
579 | * @param[in] str2 Second string to compare.
|
||
580 | * @param[in] cs Flag indicating whether comparison shall be case sensitive.
|
||
581 | * @param[in,out] n Maximum number of character to compare (in) and number of matching characters (out).
|
||
582 | * If a null pointer is specified, this parameter is ignored.
|
||
583 | * If the value pointed to is zero, comarison will not be limited.
|
||
584 | * @param[out] m Optional indicator whether there was at least one case mismatch.
|
||
585 | *
|
||
586 | * @return Integer value indicating the relationship between the strings.
|
||
587 | * @retval <0 The first character that does not match has a lower value in str1 than in str2.
|
||
588 | * @retval 0 The contents of both strings are equal.
|
||
589 | * @retval >0 The first character that does not match has a greater value in str1 than in str2.
|
||
590 | */
|
||
591 | static int _strccmp(const char *str1, const char *str2, bool cs, size_t* n, charmatch_t* m) |
||
592 | { |
||
593 | aosDbgCheck(str1 != NULL);
|
||
594 | aosDbgCheck(str2 != NULL);
|
||
595 | |||
596 | // initialize variables
|
||
597 | if (m) {
|
||
598 | *m = CHAR_MATCH_NOT; |
||
599 | } |
||
600 | size_t i = 0;
|
||
601 | |||
602 | // iterate through the strings
|
||
603 | while ((n == NULL) || (*n == 0) || (*n > 0 && i < *n)) { |
||
604 | // break on NUL
|
||
605 | if (str1[i] == '\0' || str2[i] == '\0') { |
||
606 | if (n) {
|
||
607 | *n = i; |
||
608 | } |
||
609 | break;
|
||
610 | } |
||
611 | // compare character
|
||
612 | const charmatch_t match = _charcmp(str1[i], str2[i]);
|
||
613 | if ((match == CHAR_MATCH_CASE) || (!cs && match == CHAR_MATCH_NCASE)) {
|
||
614 | if (m != NULL && *m != CHAR_MATCH_NCASE) { |
||
615 | *m = match; |
||
616 | } |
||
617 | ++i; |
||
618 | } else {
|
||
619 | if (n) {
|
||
620 | *n = i; |
||
621 | } |
||
622 | break;
|
||
623 | } |
||
624 | } |
||
625 | |||
626 | return _mapAscii2Custom(str1[i]) - _mapAscii2Custom(str2[i]);
|
||
627 | } |
||
628 | |||
629 | 27286ba5 | Thomas Schöpping | /**
|
630 | * @brief Read input from a channel as long as there is data available.
|
||
631 | *
|
||
632 | * @param[in] shell Pointer to the shell object.
|
||
633 | * @param[in] channel The channel to read from.
|
||
634 | * @param[out] n Pointer to a variable to store the number of read characters to.
|
||
635 | *
|
||
636 | * @return
|
||
637 | */
|
||
638 | ba516b61 | Thomas Schöpping | static aos_status_t _readChannel(aos_shell_t* shell, AosShellChannel* channel, size_t* n)
|
639 | e545e620 | Thomas Schöpping | { |
640 | aosDbgCheck(shell != NULL);
|
||
641 | ba516b61 | Thomas Schöpping | aosDbgCheck(channel != NULL);
|
642 | aosDbgCheck(n != NULL);
|
||
643 | e545e620 | Thomas Schöpping | |
644 | // local variables
|
||
645 | ba516b61 | Thomas Schöpping | aos_shellaction_t action = AOS_SHELL_ACTION_NONE; |
646 | e545e620 | Thomas Schöpping | char c;
|
647 | dd8738ea | Thomas Schöpping | special_key_t key; |
648 | e545e620 | Thomas Schöpping | |
649 | ba516b61 | Thomas Schöpping | // initialize output variables
|
650 | *n = 0;
|
||
651 | |||
652 | // read character by character from the channel
|
||
653 | while (chnReadTimeout(channel, (uint8_t*)&c, 1, TIME_IMMEDIATE)) { |
||
654 | dd8738ea | Thomas Schöpping | key = KEY_UNKNOWN; |
655 | e545e620 | Thomas Schöpping | |
656 | // parse escape sequence
|
||
657 | ba516b61 | Thomas Schöpping | if (shell->inputdata.escp > 0) { |
658 | shell->inputdata.escseq[shell->inputdata.escp] = c; |
||
659 | ++shell->inputdata.escp; |
||
660 | key = _interpreteEscapeSequence(shell->inputdata.escseq); |
||
661 | e545e620 | Thomas Schöpping | if (key == KEY_AMBIGUOUS) {
|
662 | // read next byte to resolve ambiguity
|
||
663 | continue;
|
||
664 | } else {
|
||
665 | ba516b61 | Thomas Schöpping | /*
|
666 | * If the escape sequence could either be parsed sucessfully
|
||
667 | * or there is no match (KEY_UNKNOWN),
|
||
668 | * reset the sequence variable and interprete key/character
|
||
669 | */
|
||
670 | shell->inputdata.escp = 0;
|
||
671 | memset(shell->inputdata.escseq, '\0', sizeof(shell->inputdata.escseq)*sizeof(shell->inputdata.escseq[0])); |
||
672 | e545e620 | Thomas Schöpping | } |
673 | } |
||
674 | |||
675 | ba516b61 | Thomas Schöpping | /* interprete keys or character */
|
676 | e545e620 | Thomas Schöpping | { |
677 | ba516b61 | Thomas Schöpping | // default
|
678 | action = AOS_SHELL_ACTION_NONE; |
||
679 | |||
680 | // printable character
|
||
681 | if (key == KEY_UNKNOWN && c >= '\x20' && c <= '\x7E') { |
||
682 | action = AOS_SHELL_ACTION_READCHAR; |
||
683 | } |
||
684 | |||
685 | // tab key or character
|
||
686 | else if (key == KEY_TAB || c == '\x09') { |
||
687 | /*
|
||
688 | * pressing tab once applies auto fill
|
||
689 | * pressing tab a second time prints suggestions
|
||
690 | */
|
||
691 | if (shell->inputdata.lastaction == AOS_SHELL_ACTION_AUTOFILL || shell->inputdata.lastaction == AOS_SHELL_ACTION_SUGGEST) {
|
||
692 | action = AOS_SHELL_ACTION_SUGGEST; |
||
693 | e545e620 | Thomas Schöpping | } else {
|
694 | ba516b61 | Thomas Schöpping | action = AOS_SHELL_ACTION_AUTOFILL; |
695 | e545e620 | Thomas Schöpping | } |
696 | ba516b61 | Thomas Schöpping | } |
697 | |||
698 | // INS key
|
||
699 | else if (key == KEY_INSERT) { |
||
700 | action = AOS_SHELL_ACTION_INSERTTOGGLE; |
||
701 | } |
||
702 | |||
703 | // DEL key or character
|
||
704 | else if (key == KEY_DELETE || c == '\x7F') { |
||
705 | // ignore if cursor is at very right
|
||
706 | if (shell->inputdata.cursorpos < shell->inputdata.lineend) {
|
||
707 | action = AOS_SHELL_ACTION_DELETEFORWARD; |
||
708 | e545e620 | Thomas Schöpping | } |
709 | ba516b61 | Thomas Schöpping | } |
710 | |||
711 | // backspace key or character
|
||
712 | else if (key == KEY_BACKSPACE || c == '\x08') { |
||
713 | // ignore if cursor is at very left
|
||
714 | if (shell->inputdata.cursorpos > 0) { |
||
715 | action = AOS_SHELL_ACTION_DELETEBACKWARD; |
||
716 | e545e620 | Thomas Schöpping | } |
717 | ba516b61 | Thomas Schöpping | } |
718 | |||
719 | // 'page up' of 'arrow up' key
|
||
720 | else if (key == KEY_PAGE_UP || key == KEY_ARROW_UP) { |
||
721 | e545e620 | Thomas Schöpping | // ignore if there was some input
|
722 | ba516b61 | Thomas Schöpping | if (shell->inputdata.noinput) {
|
723 | action = AOS_SHELL_ACTION_RECALLLAST; |
||
724 | e545e620 | Thomas Schöpping | } |
725 | ba516b61 | Thomas Schöpping | } |
726 | |||
727 | // 'page down' key, 'arrow done' key, 'end of test' character or 'end of transmission' character
|
||
728 | else if (key == KEY_PAGE_DOWN || key == KEY_ARROW_DOWN || c == '\x03' || c == '\x03') { |
||
729 | e545e620 | Thomas Schöpping | // ignore if line is empty
|
730 | ba516b61 | Thomas Schöpping | if (shell->inputdata.lineend > 0) { |
731 | action = AOS_SHELL_ACTION_CLEAR; |
||
732 | e545e620 | Thomas Schöpping | } |
733 | ba516b61 | Thomas Schöpping | } |
734 | |||
735 | // 'home' key
|
||
736 | else if (key == KEY_HOME) { |
||
737 | e545e620 | Thomas Schöpping | // ignore if cursor is very left
|
738 | ba516b61 | Thomas Schöpping | if (shell->inputdata.cursorpos > 0) { |
739 | action = AOS_SHELL_ACTION_CURSOR2START; |
||
740 | e545e620 | Thomas Schöpping | } |
741 | ba516b61 | Thomas Schöpping | } |
742 | |||
743 | // 'end' key
|
||
744 | else if (key == KEY_END) { |
||
745 | // ignore if cursos is very right
|
||
746 | if (shell->inputdata.cursorpos < shell->inputdata.lineend) {
|
||
747 | action = AOS_SHELL_ACTION_CURSOR2END; |
||
748 | e545e620 | Thomas Schöpping | } |
749 | ba516b61 | Thomas Schöpping | } |
750 | |||
751 | // 'arrow left' key
|
||
752 | else if (key == KEY_ARROW_LEFT) { |
||
753 | e545e620 | Thomas Schöpping | // ignore if cursor is very left
|
754 | ba516b61 | Thomas Schöpping | if (shell->inputdata.cursorpos > 0) { |
755 | action = AOS_SHELL_ACTION_CURSORLEFT; |
||
756 | e545e620 | Thomas Schöpping | } |
757 | ba516b61 | Thomas Schöpping | } |
758 | |||
759 | // 'arrow right' key
|
||
760 | else if (key == KEY_ARROW_RIGHT) { |
||
761 | // irgnore if cursor is very right
|
||
762 | if (shell->inputdata.cursorpos < shell->inputdata.lineend) {
|
||
763 | action = AOS_SHELL_ACTION_CURSORRIGHT; |
||
764 | e545e620 | Thomas Schöpping | } |
765 | ba516b61 | Thomas Schöpping | } |
766 | |||
767 | // carriage return ('\r') or line feed ('\n') character
|
||
768 | else if (c == '\x0D' || c == '\x0A') { |
||
769 | action = AOS_SHELL_ACTION_EXECUTE; |
||
770 | } |
||
771 | |||
772 | // ESC key or [ESCAPE] character
|
||
773 | else if (key == KEY_ESCAPE || c == '\x1B') { |
||
774 | action = AOS_SHELL_ACTION_ESCSTART; |
||
775 | e545e620 | Thomas Schöpping | } |
776 | } |
||
777 | |||
778 | /* handle function */
|
||
779 | ba516b61 | Thomas Schöpping | switch (action) {
|
780 | case AOS_SHELL_ACTION_READCHAR:
|
||
781 | { |
||
782 | e545e620 | Thomas Schöpping | // line is full
|
783 | ba516b61 | Thomas Schöpping | if (shell->inputdata.lineend + 1 >= shell->linesize) { |
784 | _moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
||
785 | chprintf((BaseSequentialStream*)&shell->stream, "\n\tmaximum line width reached\n");
|
||
786 | e545e620 | Thomas Schöpping | _printPrompt(shell); |
787 | ba516b61 | Thomas Schöpping | _printLine(shell, 0, shell->inputdata.lineend);
|
788 | _moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
||
789 | e545e620 | Thomas Schöpping | } |
790 | // read character
|
||
791 | else {
|
||
792 | // clear old line content on first input
|
||
793 | ba516b61 | Thomas Schöpping | if (shell->inputdata.noinput) {
|
794 | e545e620 | Thomas Schöpping | memset(shell->line, '\0', shell->linesize);
|
795 | ba516b61 | Thomas Schöpping | shell->inputdata.noinput = false;
|
796 | e545e620 | Thomas Schöpping | } |
797 | // overwrite content
|
||
798 | if (shell->config & AOS_SHELL_CONFIG_INPUT_OVERWRITE) {
|
||
799 | ba516b61 | Thomas Schöpping | shell->line[shell->inputdata.cursorpos] = c; |
800 | ++shell->inputdata.cursorpos; |
||
801 | shell->inputdata.lineend = (shell->inputdata.cursorpos > shell->inputdata.lineend) ? shell->inputdata.cursorpos : shell->inputdata.lineend; |
||
802 | streamPut(&shell->stream, (uint8_t)c); |
||
803 | e545e620 | Thomas Schöpping | } |
804 | // insert character
|
||
805 | else {
|
||
806 | ba516b61 | Thomas Schöpping | memmove(&(shell->line[shell->inputdata.cursorpos+1]), &(shell->line[shell->inputdata.cursorpos]), shell->inputdata.lineend - shell->inputdata.cursorpos);
|
807 | shell->line[shell->inputdata.cursorpos] = c; |
||
808 | ++shell->inputdata.lineend; |
||
809 | _printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
||
810 | ++shell->inputdata.cursorpos; |
||
811 | _moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
||
812 | e545e620 | Thomas Schöpping | } |
813 | } |
||
814 | break;
|
||
815 | ba516b61 | Thomas Schöpping | } |
816 | e545e620 | Thomas Schöpping | |
817 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_AUTOFILL:
|
818 | e545e620 | Thomas Schöpping | { |
819 | const char* fill = shell->line; |
||
820 | ba516b61 | Thomas Schöpping | size_t cmatch = shell->inputdata.cursorpos; |
821 | e545e620 | Thomas Schöpping | charmatch_t matchlevel = CHAR_MATCH_NOT; |
822 | size_t n; |
||
823 | // iterate through command list
|
||
824 | for (aos_shellcommand_t* cmd = shell->commands; cmd != NULL; cmd = cmd->next) { |
||
825 | // compare current match with command
|
||
826 | n = cmatch; |
||
827 | charmatch_t mlvl = CHAR_MATCH_NOT; |
||
828 | _strccmp(fill, cmd->name, shell->config & AOS_SHELL_CONFIG_MATCH_CASE, (n == 0) ? NULL : &n, &mlvl); |
||
829 | const int cmp = (n < cmatch) ? |
||
830 | (n - cmatch) : |
||
831 | (cmd->name[n] != '\0') ?
|
||
832 | strlen(cmd->name) - n : |
||
833 | 0;
|
||
834 | // if an exact match was found
|
||
835 | ba516b61 | Thomas Schöpping | if (cmatch + cmp == shell->inputdata.cursorpos) {
|
836 | cmatch = shell->inputdata.cursorpos; |
||
837 | e545e620 | Thomas Schöpping | fill = cmd->name; |
838 | // break the loop only if there are no case mismatches with the input
|
||
839 | ba516b61 | Thomas Schöpping | n = shell->inputdata.cursorpos; |
840 | e545e620 | Thomas Schöpping | _strccmp(fill, shell->line, false, &n, &mlvl);
|
841 | if (mlvl == CHAR_MATCH_CASE) {
|
||
842 | break;
|
||
843 | } |
||
844 | } |
||
845 | // if a not exact match was found
|
||
846 | ba516b61 | Thomas Schöpping | else if (cmatch + cmp > shell->inputdata.cursorpos) { |
847 | e545e620 | Thomas Schöpping | // if this is the first one
|
848 | if (fill == shell->line) {
|
||
849 | cmatch += cmp; |
||
850 | fill = cmd->name; |
||
851 | } |
||
852 | // if this is a worse one
|
||
853 | else if ((cmp < 0) || (cmp == 0 && mlvl == CHAR_MATCH_CASE)) { |
||
854 | cmatch += cmp; |
||
855 | } |
||
856 | } |
||
857 | // non matching commands are ignored
|
||
858 | else {}
|
||
859 | } |
||
860 | // evaluate if there are case mismatches
|
||
861 | n = cmatch; |
||
862 | _strccmp(shell->line, fill, shell->config & AOS_SHELL_CONFIG_MATCH_CASE, &n, &matchlevel); |
||
863 | // print the auto fill if any
|
||
864 | ba516b61 | Thomas Schöpping | if (cmatch > shell->inputdata.cursorpos || (cmatch == shell->inputdata.cursorpos && matchlevel == CHAR_MATCH_NCASE)) {
|
865 | shell->inputdata.noinput = false;
|
||
866 | e545e620 | Thomas Schöpping | // limit auto fill so it will not overflow the line width
|
867 | ba516b61 | Thomas Schöpping | if (shell->inputdata.lineend + (cmatch - shell->inputdata.cursorpos) > shell->linesize) {
|
868 | cmatch = shell->linesize - shell->inputdata.lineend + shell->inputdata.cursorpos; |
||
869 | e545e620 | Thomas Schöpping | } |
870 | // move trailing memory further in the line
|
||
871 | ba516b61 | Thomas Schöpping | memmove(&(shell->line[cmatch]), &(shell->line[shell->inputdata.cursorpos]), shell->inputdata.lineend - shell->inputdata.cursorpos); |
872 | shell->inputdata.lineend += cmatch - shell->inputdata.cursorpos; |
||
873 | e545e620 | Thomas Schöpping | // if there was no incorrect case when matching
|
874 | if (matchlevel == CHAR_MATCH_CASE) {
|
||
875 | // insert fill command name to line
|
||
876 | ba516b61 | Thomas Schöpping | memcpy(&(shell->line[shell->inputdata.cursorpos]), &(fill[shell->inputdata.cursorpos]), cmatch - shell->inputdata.cursorpos); |
877 | e545e620 | Thomas Schöpping | // print the output
|
878 | ba516b61 | Thomas Schöpping | _printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
879 | e545e620 | Thomas Schöpping | } else {
|
880 | // overwrite line with fill command name
|
||
881 | memcpy(shell->line, fill, cmatch); |
||
882 | // reprint the whole line
|
||
883 | ba516b61 | Thomas Schöpping | _moveCursor(shell, shell->inputdata.cursorpos, 0);
|
884 | _printLine(shell, 0, shell->inputdata.lineend);
|
||
885 | e545e620 | Thomas Schöpping | } |
886 | // move cursor to the end of the matching sequence
|
||
887 | ba516b61 | Thomas Schöpping | shell->inputdata.cursorpos = cmatch; |
888 | _moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
||
889 | e545e620 | Thomas Schöpping | } |
890 | break;
|
||
891 | } |
||
892 | |||
893 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_SUGGEST:
|
894 | e545e620 | Thomas Schöpping | { |
895 | unsigned int matches = 0; |
||
896 | // iterate through command list
|
||
897 | for (aos_shellcommand_t* cmd = shell->commands; cmd != NULL; cmd = cmd->next) { |
||
898 | // compare line content with command, excpet if cursorpos=0
|
||
899 | ba516b61 | Thomas Schöpping | size_t i = shell->inputdata.cursorpos; |
900 | if (shell->inputdata.cursorpos > 0) { |
||
901 | e545e620 | Thomas Schöpping | _strccmp(shell->line, cmd->name, true, &i, NULL); |
902 | } |
||
903 | ba516b61 | Thomas Schöpping | const int cmp = (i < shell->inputdata.cursorpos) ? |
904 | (i - shell->inputdata.cursorpos) : |
||
905 | e545e620 | Thomas Schöpping | (cmd->name[i] != '\0') ?
|
906 | strlen(cmd->name) - i : |
||
907 | 0;
|
||
908 | // if a match was found
|
||
909 | if (cmp > 0) { |
||
910 | // if this is the first one
|
||
911 | if (matches == 0) { |
||
912 | ba516b61 | Thomas Schöpping | _moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
913 | streamPut(&shell->stream, '\n');
|
||
914 | e545e620 | Thomas Schöpping | } |
915 | // print the command
|
||
916 | ba516b61 | Thomas Schöpping | chprintf((BaseSequentialStream*)&shell->stream, "\t%s\n", cmd->name);
|
917 | e545e620 | Thomas Schöpping | ++matches; |
918 | } |
||
919 | } |
||
920 | // reprint the prompt and line if any matches have been found
|
||
921 | if (matches > 0) { |
||
922 | _printPrompt(shell); |
||
923 | ba516b61 | Thomas Schöpping | _printLine(shell, 0, shell->inputdata.lineend);
|
924 | _moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
||
925 | shell->inputdata.noinput = false;
|
||
926 | e545e620 | Thomas Schöpping | } |
927 | break;
|
||
928 | } |
||
929 | |||
930 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_INSERTTOGGLE:
|
931 | { |
||
932 | e545e620 | Thomas Schöpping | if (shell->config & AOS_SHELL_CONFIG_INPUT_OVERWRITE) {
|
933 | shell->config &= ~AOS_SHELL_CONFIG_INPUT_OVERWRITE; |
||
934 | } else {
|
||
935 | shell->config |= AOS_SHELL_CONFIG_INPUT_OVERWRITE; |
||
936 | } |
||
937 | break;
|
||
938 | ba516b61 | Thomas Schöpping | } |
939 | e545e620 | Thomas Schöpping | |
940 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_DELETEFORWARD:
|
941 | { |
||
942 | --shell->inputdata.lineend; |
||
943 | memmove(&(shell->line[shell->inputdata.cursorpos]), &(shell->line[shell->inputdata.cursorpos+1]), shell->inputdata.lineend - shell->inputdata.cursorpos);
|
||
944 | _printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
||
945 | streamPut(&shell->stream, ' ');
|
||
946 | _moveCursor(shell, shell->inputdata.lineend + 1, shell->inputdata.cursorpos);
|
||
947 | e545e620 | Thomas Schöpping | break;
|
948 | ba516b61 | Thomas Schöpping | } |
949 | e545e620 | Thomas Schöpping | |
950 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_DELETEBACKWARD:
|
951 | { |
||
952 | --shell->inputdata.cursorpos; |
||
953 | memmove(&(shell->line[shell->inputdata.cursorpos]), &(shell->line[shell->inputdata.cursorpos+1]), shell->inputdata.lineend - shell->inputdata.cursorpos);
|
||
954 | --shell->inputdata.lineend; |
||
955 | shell->line[shell->inputdata.lineend] = '\0';
|
||
956 | _moveCursor(shell, shell->inputdata.cursorpos + 1, shell->inputdata.cursorpos);
|
||
957 | _printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
||
958 | streamPut(&shell->stream, ' ');
|
||
959 | _moveCursor(shell, shell->inputdata.lineend+1, shell->inputdata.cursorpos);
|
||
960 | e545e620 | Thomas Schöpping | break;
|
961 | ba516b61 | Thomas Schöpping | } |
962 | e545e620 | Thomas Schöpping | |
963 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_RECALLLAST:
|
964 | e545e620 | Thomas Schöpping | { |
965 | // replace any intermediate NUL bytes with spaces
|
||
966 | ba516b61 | Thomas Schöpping | shell->inputdata.lineend = 0;
|
967 | e545e620 | Thomas Schöpping | size_t nul_start = 0;
|
968 | size_t nul_end = 0;
|
||
969 | // search line for a NUL byte
|
||
970 | while (nul_start < shell->linesize) {
|
||
971 | if (shell->line[nul_start] == '\0') { |
||
972 | nul_end = nul_start + 1;
|
||
973 | // keep searcjing for a byte that is not NUL
|
||
974 | while (nul_end < shell->linesize) {
|
||
975 | if (shell->line[nul_end] != '\0') { |
||
976 | // an intermediate NUL sequence was found
|
||
977 | memset(&(shell->line[nul_start]), ' ', nul_end - nul_start);
|
||
978 | ba516b61 | Thomas Schöpping | shell->inputdata.lineend = nul_end + 1;
|
979 | e545e620 | Thomas Schöpping | break;
|
980 | } else {
|
||
981 | ++nul_end; |
||
982 | } |
||
983 | } |
||
984 | nul_start = nul_end + 1;
|
||
985 | } else {
|
||
986 | ba516b61 | Thomas Schöpping | ++shell->inputdata.lineend; |
987 | e545e620 | Thomas Schöpping | ++nul_start; |
988 | } |
||
989 | } |
||
990 | ba516b61 | Thomas Schöpping | shell->inputdata.cursorpos = shell->inputdata.lineend; |
991 | e545e620 | Thomas Schöpping | // print the line
|
992 | ba516b61 | Thomas Schöpping | shell->inputdata.noinput = _printLine(shell, 0, shell->inputdata.lineend) == 0; |
993 | e545e620 | Thomas Schöpping | break;
|
994 | } |
||
995 | |||
996 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_CLEAR:
|
997 | { |
||
998 | e545e620 | Thomas Schöpping | // clear output
|
999 | ba516b61 | Thomas Schöpping | _moveCursor(shell, shell->inputdata.cursorpos, 0);
|
1000 | for (shell->inputdata.cursorpos = 0; shell->inputdata.cursorpos < shell->inputdata.lineend; ++shell->inputdata.cursorpos) { |
||
1001 | streamPut(&shell->stream, ' ');
|
||
1002 | e545e620 | Thomas Schöpping | } |
1003 | ba516b61 | Thomas Schöpping | _moveCursor(shell, shell->inputdata.lineend, 0);
|
1004 | shell->inputdata.cursorpos = 0;
|
||
1005 | shell->inputdata.lineend = 0;
|
||
1006 | shell->inputdata.noinput = true;
|
||
1007 | e545e620 | Thomas Schöpping | break;
|
1008 | ba516b61 | Thomas Schöpping | } |
1009 | e545e620 | Thomas Schöpping | |
1010 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_CURSOR2START:
|
1011 | { |
||
1012 | _moveCursor(shell, shell->inputdata.cursorpos, 0);
|
||
1013 | shell->inputdata.cursorpos = 0;
|
||
1014 | e545e620 | Thomas Schöpping | break;
|
1015 | ba516b61 | Thomas Schöpping | } |
1016 | e545e620 | Thomas Schöpping | |
1017 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_CURSOR2END:
|
1018 | { |
||
1019 | _moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
||
1020 | shell->inputdata.cursorpos = shell->inputdata.lineend; |
||
1021 | e545e620 | Thomas Schöpping | break;
|
1022 | ba516b61 | Thomas Schöpping | } |
1023 | e545e620 | Thomas Schöpping | |
1024 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_CURSORLEFT:
|
1025 | { |
||
1026 | _moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.cursorpos-1);
|
||
1027 | --shell->inputdata.cursorpos; |
||
1028 | e545e620 | Thomas Schöpping | break;
|
1029 | ba516b61 | Thomas Schöpping | } |
1030 | e545e620 | Thomas Schöpping | |
1031 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_CURSORRIGHT:
|
1032 | { |
||
1033 | _moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.cursorpos+1);
|
||
1034 | ++shell->inputdata.cursorpos; |
||
1035 | e545e620 | Thomas Schöpping | break;
|
1036 | ba516b61 | Thomas Schöpping | } |
1037 | e545e620 | Thomas Schöpping | |
1038 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_EXECUTE:
|
1039 | { |
||
1040 | streamPut(&shell->stream, '\n');
|
||
1041 | // set the number of read bytes and return
|
||
1042 | if (!shell->inputdata.noinput) {
|
||
1043 | *n = shell->linesize - shell->inputdata.lineend; |
||
1044 | e545e620 | Thomas Schöpping | // fill the remainder of the line with NUL bytes
|
1045 | ba516b61 | Thomas Schöpping | memset(&(shell->line[shell->inputdata.lineend]), '\0', *n);
|
1046 | // reset static variables
|
||
1047 | shell->inputdata.noinput = true;
|
||
1048 | e545e620 | Thomas Schöpping | } |
1049 | ba516b61 | Thomas Schöpping | return AOS_SUCCESS;
|
1050 | } |
||
1051 | e545e620 | Thomas Schöpping | |
1052 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_ESCSTART:
|
1053 | { |
||
1054 | shell->inputdata.escseq[0] = c;
|
||
1055 | ++shell->inputdata.escp; |
||
1056 | e545e620 | Thomas Schöpping | break;
|
1057 | ba516b61 | Thomas Schöpping | } |
1058 | e545e620 | Thomas Schöpping | |
1059 | ba516b61 | Thomas Schöpping | case AOS_SHELL_ACTION_NONE:
|
1060 | e545e620 | Thomas Schöpping | default:
|
1061 | ba516b61 | Thomas Schöpping | { |
1062 | e545e620 | Thomas Schöpping | // do nothing (ignore input) and read next byte
|
1063 | continue;
|
||
1064 | ba516b61 | Thomas Schöpping | } |
1065 | } /* end of switch */
|
||
1066 | e545e620 | Thomas Schöpping | |
1067 | ba516b61 | Thomas Schöpping | shell->inputdata.lastaction = action; |
1068 | e545e620 | Thomas Schöpping | } /* end of while */
|
1069 | |||
1070 | ba516b61 | Thomas Schöpping | // no more data could be read from the channel
|
1071 | return AOS_WARNING;
|
||
1072 | e545e620 | Thomas Schöpping | } |
1073 | |||
1074 | /**
|
||
1075 | * @brief Parses the content of the input buffer (line) to separate arguments.
|
||
1076 | *
|
||
1077 | * @param[in] shell Pointer to the shell object.
|
||
1078 | *
|
||
1079 | * @return Number of arguments found.
|
||
1080 | */
|
||
1081 | static size_t _parseArguments(aos_shell_t* shell)
|
||
1082 | { |
||
1083 | aosDbgCheck(shell != NULL);
|
||
1084 | |||
1085 | /*
|
||
1086 | * States for a very small FSM.
|
||
1087 | */
|
||
1088 | typedef enum { |
||
1089 | START, |
||
1090 | SPACE, |
||
1091 | TEXT, |
||
1092 | END, |
||
1093 | } state_t; |
||
1094 | |||
1095 | // local variables
|
||
1096 | state_t state = START; |
||
1097 | size_t arg = 0;
|
||
1098 | |||
1099 | // iterate through the line
|
||
1100 | for (char* c = shell->line; c < shell->line + shell->linesize; ++c) { |
||
1101 | // terminate at first NUL byte
|
||
1102 | if (*c == '\0') { |
||
1103 | state = END; |
||
1104 | break;
|
||
1105 | } |
||
1106 | // spaces become NUL bytes
|
||
1107 | else if (*c == ' ') { |
||
1108 | *c = '\0';
|
||
1109 | state = SPACE; |
||
1110 | } |
||
1111 | // handle non-NUL bytes
|
||
1112 | else {
|
||
1113 | switch (state) {
|
||
1114 | case START:
|
||
1115 | case SPACE:
|
||
1116 | // ignore too many arguments
|
||
1117 | if (arg < shell->arglistsize) {
|
||
1118 | shell->arglist[arg] = c; |
||
1119 | } |
||
1120 | ++arg; |
||
1121 | break;
|
||
1122 | case TEXT:
|
||
1123 | case END:
|
||
1124 | default:
|
||
1125 | break;
|
||
1126 | } |
||
1127 | state = TEXT; |
||
1128 | } |
||
1129 | } |
||
1130 | |||
1131 | // set all remaining argument pointers to NULL
|
||
1132 | for (size_t a = arg; a < shell->arglistsize; ++a) {
|
||
1133 | shell->arglist[a] = NULL;
|
||
1134 | } |
||
1135 | |||
1136 | return arg;
|
||
1137 | } |
||
1138 | |||
1139 | f3ac1c96 | Thomas Schöpping | /******************************************************************************/
|
1140 | /* EXPORTED FUNCTIONS */
|
||
1141 | /******************************************************************************/
|
||
1142 | |||
1143 | e545e620 | Thomas Schöpping | /**
|
1144 | * @brief Initializes a shell object with the specified parameters.
|
||
1145 | *
|
||
1146 | * @param[in] shell Pointer to the shell object.
|
||
1147 | * @param[in] stream I/O stream to use.
|
||
1148 | * @param[in] prompt Prompt line to print (NULL = use default prompt).
|
||
1149 | * @param[in] line Pointer to the input buffer.
|
||
1150 | * @param[in] linesize Size of the input buffer.
|
||
1151 | * @param[in] arglist Pointer to the argument buffer.
|
||
1152 | * @param[in] arglistsize Size of te argument buffer.
|
||
1153 | */
|
||
1154 | ba516b61 | Thomas Schöpping | void aosShellInit(aos_shell_t* shell, event_source_t* oseventsource, const char* prompt, char* line, size_t linesize, char** arglist, size_t arglistsize) |
1155 | e545e620 | Thomas Schöpping | { |
1156 | aosDbgCheck(shell != NULL);
|
||
1157 | ba516b61 | Thomas Schöpping | aosDbgCheck(oseventsource != NULL);
|
1158 | e545e620 | Thomas Schöpping | aosDbgCheck(line != NULL);
|
1159 | aosDbgCheck(arglist != NULL);
|
||
1160 | |||
1161 | // set parameters
|
||
1162 | shell->thread = NULL;
|
||
1163 | chEvtObjectInit(&shell->eventSource); |
||
1164 | ba516b61 | Thomas Schöpping | shell->os.eventSource = oseventsource; |
1165 | aosShellStreamInit(&shell->stream); |
||
1166 | e545e620 | Thomas Schöpping | shell->prompt = prompt; |
1167 | shell->commands = NULL;
|
||
1168 | shell->execstatus.command = NULL;
|
||
1169 | shell->execstatus.retval = 0;
|
||
1170 | shell->line = line; |
||
1171 | shell->linesize = linesize; |
||
1172 | ba516b61 | Thomas Schöpping | shell->inputdata.lastaction = AOS_SHELL_ACTION_NONE; |
1173 | shell->inputdata.escp = 0;
|
||
1174 | memset(shell->inputdata.escseq, '\0', sizeof(shell->inputdata.escseq)*sizeof(shell->inputdata.escseq[0])); |
||
1175 | shell->inputdata.cursorpos = 0;
|
||
1176 | shell->inputdata.lineend = 0;
|
||
1177 | shell->inputdata.noinput = true;
|
||
1178 | e545e620 | Thomas Schöpping | shell->arglist = arglist; |
1179 | shell->arglistsize = arglistsize; |
||
1180 | shell->config = 0x00;
|
||
1181 | |||
1182 | // initialize arrays
|
||
1183 | memset(shell->line, '\0', shell->linesize);
|
||
1184 | for (size_t a = 0; a < shell->arglistsize; ++a) { |
||
1185 | shell->arglist[a] = NULL;
|
||
1186 | } |
||
1187 | |||
1188 | return;
|
||
1189 | } |
||
1190 | |||
1191 | /**
|
||
1192 | ba516b61 | Thomas Schöpping | * @brief Initialize an AosShellStream object.
|
1193 | *
|
||
1194 | * @param[in] stream The AosShellStrem to initialize.
|
||
1195 | */
|
||
1196 | void aosShellStreamInit(AosShellStream* stream)
|
||
1197 | { |
||
1198 | aosDbgCheck(stream != NULL);
|
||
1199 | |||
1200 | stream->vmt = &_streamvmt; |
||
1201 | stream->channel = NULL;
|
||
1202 | |||
1203 | return;
|
||
1204 | } |
||
1205 | |||
1206 | /**
|
||
1207 | * @brief Initialize an AosShellChannel object with the specified parameters.
|
||
1208 | *
|
||
1209 | dd8738ea | Thomas Schöpping | * @param[in] channel The AosShellChannel to initialize.
|
1210 | * @param[in] asyncchannel An BaseAsynchronousChannel this AosShellChannel is associated with.
|
||
1211 | ba516b61 | Thomas Schöpping | */
|
1212 | dd8738ea | Thomas Schöpping | void aosShellChannelInit(AosShellChannel* channel, BaseAsynchronousChannel* asyncchannel)
|
1213 | ba516b61 | Thomas Schöpping | { |
1214 | aosDbgCheck(channel != NULL);
|
||
1215 | dd8738ea | Thomas Schöpping | aosDbgCheck(asyncchannel != NULL);
|
1216 | ba516b61 | Thomas Schöpping | |
1217 | channel->vmt = &_channelvmt; |
||
1218 | dd8738ea | Thomas Schöpping | channel->asyncchannel = asyncchannel; |
1219 | channel->listener.wflags = 0;
|
||
1220 | ba516b61 | Thomas Schöpping | channel->next = NULL;
|
1221 | channel->flags = 0;
|
||
1222 | |||
1223 | return;
|
||
1224 | } |
||
1225 | |||
1226 | /**
|
||
1227 | e545e620 | Thomas Schöpping | * @brief Inserts a command to the shells list of commands.
|
1228 | *
|
||
1229 | * @param[in] shell Pointer to the shell object.
|
||
1230 | * @param[in] cmd Pointer to the command to add.
|
||
1231 | *
|
||
1232 | * @return A status value.
|
||
1233 | * @retval AOS_SUCCESS The command was added successfully.
|
||
1234 | * @retval AOS_ERROR Another command with identical name already exists.
|
||
1235 | */
|
||
1236 | aos_status_t aosShellAddCommand(aos_shell_t *shell, aos_shellcommand_t *cmd) |
||
1237 | { |
||
1238 | aosDbgCheck(shell != NULL);
|
||
1239 | aosDbgCheck(cmd != NULL);
|
||
1240 | aosDbgCheck(cmd->name != NULL && strlen(cmd->name) > 0 && strchr(cmd->name, ' ') == NULL && strchr(cmd->name, '\t') == NULL); |
||
1241 | aosDbgCheck(cmd->callback != NULL);
|
||
1242 | aosDbgCheck(cmd->next == NULL);
|
||
1243 | |||
1244 | aos_shellcommand_t* prev = NULL;
|
||
1245 | aos_shellcommand_t** curr = &(shell->commands); |
||
1246 | |||
1247 | // insert the command to the list wrt lexographical order (exception: lower case characters preceed upper their uppercase counterparts)
|
||
1248 | ba516b61 | Thomas Schöpping | while (*curr != NULL) { |
1249 | // iterate through the list as long as the command names are 'smaller'
|
||
1250 | const int cmp = _strccmp((*curr)->name, cmd->name, true, NULL, NULL); |
||
1251 | if (cmp < 0) { |
||
1252 | prev = *curr; |
||
1253 | curr = &((*curr)->next); |
||
1254 | continue;
|
||
1255 | } |
||
1256 | // error if the command already exists
|
||
1257 | else if (cmp == 0) { |
||
1258 | return AOS_ERROR;
|
||
1259 | } |
||
1260 | // insert the command as soon as a 'larger' name was found
|
||
1261 | else /* if (cmpval > 0) */ { |
||
1262 | cmd->next = *curr; |
||
1263 | // special case: the first command is larger
|
||
1264 | if (prev == NULL) { |
||
1265 | shell->commands = cmd; |
||
1266 | } else {
|
||
1267 | prev->next = cmd; |
||
1268 | e545e620 | Thomas Schöpping | } |
1269 | ba516b61 | Thomas Schöpping | return AOS_SUCCESS;
|
1270 | e545e620 | Thomas Schöpping | } |
1271 | } |
||
1272 | ba516b61 | Thomas Schöpping | // the end of the list has been reached
|
1273 | |||
1274 | // append the command
|
||
1275 | *curr = cmd; |
||
1276 | return AOS_SUCCESS;
|
||
1277 | e545e620 | Thomas Schöpping | } |
1278 | |||
1279 | /**
|
||
1280 | * @brief Removes a command from the shells list of commands.
|
||
1281 | *
|
||
1282 | * @param[in] shell Pointer to the shell object.
|
||
1283 | * @param[in] cmd Name of the command to removde.
|
||
1284 | * @param[out] removed Optional pointer to the command that was removed.
|
||
1285 | *
|
||
1286 | * @return A status value.
|
||
1287 | * @retval AOS_SUCCESS The command was removed successfully.
|
||
1288 | * @retval AOS_ERROR The command name was not found.
|
||
1289 | */
|
||
1290 | aos_status_t aosShellRemoveCommand(aos_shell_t *shell, char *cmd, aos_shellcommand_t **removed)
|
||
1291 | { |
||
1292 | aosDbgCheck(shell != NULL);
|
||
1293 | aosDbgCheck(cmd != NULL && strlen(cmd) > 0); |
||
1294 | |||
1295 | aos_shellcommand_t* prev = NULL;
|
||
1296 | aos_shellcommand_t** curr = &(shell->commands); |
||
1297 | |||
1298 | // iterate through the list and seach for the specified command name
|
||
1299 | while (curr != NULL) { |
||
1300 | const int cmpval = strcmp((*curr)->name, cmd); |
||
1301 | // iterate through the list as long as the command names are 'smaller'
|
||
1302 | if (cmpval < 0) { |
||
1303 | prev = *curr; |
||
1304 | curr = &((*curr)->next); |
||
1305 | continue;
|
||
1306 | } |
||
1307 | // remove the command when found
|
||
1308 | else if (cmpval == 0) { |
||
1309 | // special case: the first command matches
|
||
1310 | if (prev == NULL) { |
||
1311 | shell->commands = (*curr)->next; |
||
1312 | } else {
|
||
1313 | prev->next = (*curr)->next; |
||
1314 | } |
||
1315 | (*curr)->next = NULL;
|
||
1316 | // set the optional output argument
|
||
1317 | if (removed != NULL) { |
||
1318 | *removed = *curr; |
||
1319 | } |
||
1320 | return AOS_SUCCESS;
|
||
1321 | } |
||
1322 | // break the loop if the command names are 'larger'
|
||
1323 | else /* if (cmpval > 0) */ { |
||
1324 | break;
|
||
1325 | } |
||
1326 | } |
||
1327 | |||
1328 | // if the command was not found, return an error
|
||
1329 | return AOS_ERROR;
|
||
1330 | } |
||
1331 | |||
1332 | /**
|
||
1333 | aed3754b | Thomas Schöpping | * @brief Count the number of commands assigned to the shell.
|
1334 | *
|
||
1335 | * @param[in] shell The shell to count the commands for.
|
||
1336 | *
|
||
1337 | * @return The number of commands associated to the shell.
|
||
1338 | */
|
||
1339 | unsigned int aosShellCountCommands(aos_shell_t* shell) |
||
1340 | { |
||
1341 | aosDbgCheck(shell != NULL);
|
||
1342 | |||
1343 | unsigned int count = 0; |
||
1344 | aos_shellcommand_t* cmd = shell->commands; |
||
1345 | while (cmd != NULL) { |
||
1346 | ++count; |
||
1347 | cmd = cmd->next; |
||
1348 | } |
||
1349 | |||
1350 | return count;
|
||
1351 | } |
||
1352 | |||
1353 | /**
|
||
1354 | ba516b61 | Thomas Schöpping | * @brief Add a channel to a AosShellStream.
|
1355 | *
|
||
1356 | * @param[in] stream The AosShellStream to extend.
|
||
1357 | * @param[in] channel The channel to be added to the stream.
|
||
1358 | */
|
||
1359 | void aosShellStreamAddChannel(AosShellStream* stream, AosShellChannel* channel)
|
||
1360 | { |
||
1361 | aosDbgCheck(stream != NULL);
|
||
1362 | dd8738ea | Thomas Schöpping | aosDbgCheck(channel != NULL && channel->asyncchannel != NULL && channel->next == NULL && (channel->flags & AOS_SHELLCHANNEL_ATTACHED) == 0); |
1363 | ba516b61 | Thomas Schöpping | |
1364 | // prepend the new channel
|
||
1365 | chSysLock(); |
||
1366 | channel->flags |= AOS_SHELLCHANNEL_ATTACHED; |
||
1367 | channel->next = stream->channel; |
||
1368 | stream->channel = channel; |
||
1369 | chSysUnlock(); |
||
1370 | |||
1371 | return;
|
||
1372 | } |
||
1373 | |||
1374 | /**
|
||
1375 | * @brief Remove a channel from an AosShellStream.
|
||
1376 | *
|
||
1377 | * @param[in] stream The AosShellStream to modify.
|
||
1378 | * @param[in] channel The channel to remove.
|
||
1379 | aed3754b | Thomas Schöpping | *
|
1380 | * @return A status value.
|
||
1381 | * @retval AOS_SUCCESS The channel was removed successfully.
|
||
1382 | * @retval AOS_ERROR The specified channel was not found to be associated with the shell.
|
||
1383 | ba516b61 | Thomas Schöpping | */
|
1384 | aos_status_t aosShellStreamRemoveChannel(AosShellStream* stream, AosShellChannel* channel) |
||
1385 | { |
||
1386 | aosDbgCheck(stream != NULL);
|
||
1387 | dd8738ea | Thomas Schöpping | aosDbgCheck(channel != NULL && channel->asyncchannel != NULL && channel->flags & AOS_SHELLCHANNEL_ATTACHED); |
1388 | ba516b61 | Thomas Schöpping | |
1389 | // local varibales
|
||
1390 | AosShellChannel* prev = NULL;
|
||
1391 | AosShellChannel* curr = stream->channel; |
||
1392 | |||
1393 | // iterate through the list and search for the specified channel
|
||
1394 | while (curr != NULL) { |
||
1395 | // if the channel was found
|
||
1396 | if (curr == channel) {
|
||
1397 | chSysLock(); |
||
1398 | // special case: the first channel matches (prev is NULL)
|
||
1399 | if (prev == NULL) { |
||
1400 | stream->channel = curr->next; |
||
1401 | } else {
|
||
1402 | prev->next = channel->next; |
||
1403 | } |
||
1404 | curr->next = NULL;
|
||
1405 | curr->flags &= ~AOS_SHELLCHANNEL_ATTACHED; |
||
1406 | chSysUnlock(); |
||
1407 | return AOS_SUCCESS;
|
||
1408 | } |
||
1409 | } |
||
1410 | |||
1411 | // if the channel was not found, return an error
|
||
1412 | return AOS_ERROR;
|
||
1413 | } |
||
1414 | |||
1415 | /**
|
||
1416 | * @brief Enable a AosSheööChannel as input.
|
||
1417 | *
|
||
1418 | * @param[in] channel The channel to enable as input.
|
||
1419 | */
|
||
1420 | void aosShellChannelInputEnable(AosShellChannel* channel)
|
||
1421 | { |
||
1422 | dd8738ea | Thomas Schöpping | aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
1423 | ba516b61 | Thomas Schöpping | |
1424 | chSysLock(); |
||
1425 | channel->listener.wflags |= CHN_INPUT_AVAILABLE; |
||
1426 | channel->flags |= AOS_SHELLCHANNEL_INPUT_ENABLED; |
||
1427 | chSysUnlock(); |
||
1428 | |||
1429 | return;
|
||
1430 | } |
||
1431 | |||
1432 | /**
|
||
1433 | * @brief Disable a AosSheööChannel as input.
|
||
1434 | *
|
||
1435 | * @param[in] channel The channel to disable as input.
|
||
1436 | */
|
||
1437 | void aosShellChannelInputDisable( AosShellChannel* channel)
|
||
1438 | { |
||
1439 | dd8738ea | Thomas Schöpping | aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
1440 | ba516b61 | Thomas Schöpping | |
1441 | chSysLock(); |
||
1442 | channel->listener.wflags &= ~CHN_INPUT_AVAILABLE; |
||
1443 | channel->flags &= ~AOS_SHELLCHANNEL_INPUT_ENABLED; |
||
1444 | chSysUnlock(); |
||
1445 | |||
1446 | return;
|
||
1447 | } |
||
1448 | |||
1449 | /**
|
||
1450 | * @brief Enable a AosSheööChannel as output.
|
||
1451 | *
|
||
1452 | * @param[in] channel The channel to enable as output.
|
||
1453 | */
|
||
1454 | void aosShellChannelOutputEnable(AosShellChannel* channel)
|
||
1455 | { |
||
1456 | dd8738ea | Thomas Schöpping | aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
1457 | ba516b61 | Thomas Schöpping | |
1458 | channel->flags |= AOS_SHELLCHANNEL_OUTPUT_ENABLED; |
||
1459 | |||
1460 | return;
|
||
1461 | } |
||
1462 | |||
1463 | /**
|
||
1464 | * @brief Disable a AosSheööChannel as output.
|
||
1465 | *
|
||
1466 | * @param[in] channel The channel to disable as output.
|
||
1467 | */
|
||
1468 | void aosShellChannelOutputDisable(AosShellChannel* channel)
|
||
1469 | { |
||
1470 | dd8738ea | Thomas Schöpping | aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
1471 | ba516b61 | Thomas Schöpping | |
1472 | channel->flags &= ~AOS_SHELLCHANNEL_OUTPUT_ENABLED; |
||
1473 | |||
1474 | return;
|
||
1475 | } |
||
1476 | |||
1477 | /**
|
||
1478 | e545e620 | Thomas Schöpping | * @brief Thread main function.
|
1479 | *
|
||
1480 | * @param[in] aosShellThread Name of the function;
|
||
1481 | * @param[in] shell Pointer to the shell object.
|
||
1482 | */
|
||
1483 | af4fd4a2 | Thomas Schöpping | void aosShellThread(void* shell) |
1484 | e545e620 | Thomas Schöpping | { |
1485 | aosDbgCheck(shell != NULL);
|
||
1486 | |||
1487 | // local variables
|
||
1488 | ba516b61 | Thomas Schöpping | eventmask_t eventmask; |
1489 | eventflags_t eventflags; |
||
1490 | AosShellChannel* channel; |
||
1491 | aos_status_t readeval; |
||
1492 | size_t nchars = 0;
|
||
1493 | e545e620 | Thomas Schöpping | size_t nargs = 0;
|
1494 | ba516b61 | Thomas Schöpping | aos_shellcommand_t* cmd; |
1495 | |||
1496 | |||
1497 | // register OS related events
|
||
1498 | chEvtRegisterMask(((aos_shell_t*)shell)->os.eventSource, &(((aos_shell_t*)shell)->os.eventListener), AOS_SHELL_EVENTMASK_OS); |
||
1499 | // register events to all input channels
|
||
1500 | for (channel = ((aos_shell_t*)shell)->stream.channel; channel != NULL; channel = channel->next) { |
||
1501 | dd8738ea | Thomas Schöpping | chEvtRegisterMaskWithFlags(&(channel->asyncchannel->event), &(channel->listener), AOS_SHELL_EVENTMASK_INPUT, channel->listener.wflags); |
1502 | ba516b61 | Thomas Schöpping | } |
1503 | e545e620 | Thomas Schöpping | |
1504 | // fire start event
|
||
1505 | chEvtBroadcastFlags(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_START); |
||
1506 | |||
1507 | ba516b61 | Thomas Schöpping | // print the prompt for the first time
|
1508 | _printPrompt((aos_shell_t*)shell); |
||
1509 | |||
1510 | e545e620 | Thomas Schöpping | // enter thread loop
|
1511 | while (!chThdShouldTerminateX()) {
|
||
1512 | ba516b61 | Thomas Schöpping | // wait for event and handle it accordingly
|
1513 | eventmask = chEvtWaitOne(ALL_EVENTS); |
||
1514 | |||
1515 | // handle event
|
||
1516 | switch (eventmask) {
|
||
1517 | |||
1518 | // OS related events
|
||
1519 | case AOS_SHELL_EVENTMASK_OS:
|
||
1520 | { |
||
1521 | eventflags = chEvtGetAndClearFlags(&((aos_shell_t*)shell)->os.eventListener); |
||
1522 | // handle shutdown/restart events
|
||
1523 | if (eventflags & AOS_SYSTEM_EVENTFLAGS_SHUTDOWN) {
|
||
1524 | chThdTerminate(((aos_shell_t*)shell)->thread); |
||
1525 | } else {
|
||
1526 | // print an error message
|
||
1527 | chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "\nERROR: unknown OS event received (0x%08X)\n", eventflags);
|
||
1528 | } |
||
1529 | e545e620 | Thomas Schöpping | break;
|
1530 | } |
||
1531 | |||
1532 | ba516b61 | Thomas Schöpping | // input events
|
1533 | case AOS_SHELL_EVENTMASK_INPUT:
|
||
1534 | { |
||
1535 | // check and handle all channels
|
||
1536 | channel = ((aos_shell_t*)shell)->stream.channel; |
||
1537 | while (channel != NULL) { |
||
1538 | eventflags = chEvtGetAndClearFlags(&channel->listener); |
||
1539 | // if there is new input
|
||
1540 | if (eventflags & CHN_INPUT_AVAILABLE) {
|
||
1541 | dd8738ea | Thomas Schöpping | // read input from channel
|
1542 | readeval = _readChannel((aos_shell_t*)shell, channel, &nchars); |
||
1543 | // parse input line to argument list only if the input shall be executed
|
||
1544 | nargs = (readeval == AOS_SUCCESS && nchars > 0) ? _parseArguments((aos_shell_t*)shell) : 0; |
||
1545 | // check number of arguments
|
||
1546 | if (nargs > ((aos_shell_t*)shell)->arglistsize) {
|
||
1547 | // error too many arguments
|
||
1548 | chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "\ttoo many arguments\n");
|
||
1549 | } else if (nargs > 0) { |
||
1550 | // search command list for arg[0] and execute callback
|
||
1551 | cmd = ((aos_shell_t*)shell)->commands; |
||
1552 | while (cmd != NULL) { |
||
1553 | if (strcmp(((aos_shell_t*)shell)->arglist[0], cmd->name) == 0) { |
||
1554 | ((aos_shell_t*)shell)->execstatus.command = cmd; |
||
1555 | chEvtBroadcastFlags(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_EXEC); |
||
1556 | ((aos_shell_t*)shell)->execstatus.retval = cmd->callback((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, nargs, ((aos_shell_t*)shell)->arglist); |
||
1557 | chEvtBroadcastFlags(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_DONE); |
||
1558 | // notify if the command was not successful
|
||
1559 | if (((aos_shell_t*)shell)->execstatus.retval != 0) { |
||
1560 | chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "command returned exit status %d\n", ((aos_shell_t*)shell)->execstatus.retval);
|
||
1561 | ba516b61 | Thomas Schöpping | } |
1562 | dd8738ea | Thomas Schöpping | break;
|
1563 | ba516b61 | Thomas Schöpping | } |
1564 | dd8738ea | Thomas Schöpping | cmd = cmd->next; |
1565 | } /* end of while */
|
||
1566 | e545e620 | Thomas Schöpping | |
1567 | dd8738ea | Thomas Schöpping | // if no matching command was found, print an error
|
1568 | if (cmd == NULL) { |
||
1569 | chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "%s: command not found\n", ((aos_shell_t*)shell)->arglist[0]); |
||
1570 | ba516b61 | Thomas Schöpping | } |
1571 | } |
||
1572 | dd8738ea | Thomas Schöpping | |
1573 | // reset some internal variables and eprint a new prompt
|
||
1574 | if (readeval == AOS_SUCCESS && !chThdShouldTerminateX()) {
|
||
1575 | ((aos_shell_t*)shell)->inputdata.cursorpos = 0;
|
||
1576 | ((aos_shell_t*)shell)->inputdata.lineend = 0;
|
||
1577 | _printPrompt((aos_shell_t*)shell); |
||
1578 | ba516b61 | Thomas Schöpping | } |
1579 | e545e620 | Thomas Schöpping | } |
1580 | ba516b61 | Thomas Schöpping | |
1581 | // iterate to next channel
|
||
1582 | channel = channel->next; |
||
1583 | e545e620 | Thomas Schöpping | } |
1584 | ba516b61 | Thomas Schöpping | break;
|
1585 | e545e620 | Thomas Schöpping | } |
1586 | ba516b61 | Thomas Schöpping | |
1587 | // other events
|
||
1588 | default:
|
||
1589 | { |
||
1590 | // print an error message
|
||
1591 | 1e5f7648 | Thomas Schöpping | chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "\nSHELL: ERROR: unknown event received (0x%08X)\n", eventmask);
|
1592 | ba516b61 | Thomas Schöpping | break;
|
1593 | e545e620 | Thomas Schöpping | } |
1594 | |||
1595 | ba516b61 | Thomas Schöpping | } /* end of switch */
|
1596 | |||
1597 | } /* end of while */
|
||
1598 | e545e620 | Thomas Schöpping | |
1599 | // fire event and exit the thread
|
||
1600 | chSysLock(); |
||
1601 | chEvtBroadcastFlagsI(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_EXIT); |
||
1602 | chThdExitS(MSG_OK); |
||
1603 | // no chSysUnlock() required since the thread has been terminated an all waiting threads have been woken up
|
||
1604 | } |
||
1605 | ba516b61 | Thomas Schöpping | |
1606 | 2dd2e257 | Thomas Schöpping | #endif /* (AMIROOS_CFG_SHELL_ENABLE == true) || (AMIROOS_CFG_TESTS_ENABLE == true)*/ |
1607 | 53710ca3 | Marc Rothmann | |
1608 | /** @} */ |