amiro-os / core / src / aos_shell.c @ d96ce104
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/*
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AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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Copyright (C) 2016..2019 Thomas Schöpping et al.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file aos_shell.c
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* @brief Shell code.
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* @details Shell code as well as shell related channels and streams.
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*
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* @addtogroup aos_shell
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* @{
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*/
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#include <amiroos.h> |
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#include <string.h> |
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#if (AMIROOS_CFG_SHELL_ENABLE == true) || (AMIROOS_CFG_TESTS_ENABLE == true) |
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/******************************************************************************/
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/* LOCAL DEFINITIONS */
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/******************************************************************************/
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/**
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* @brief Event mask to be set on OS related events.
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*/
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#define AOS_SHELL_EVENTMASK_OS EVENT_MASK(0) |
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/**
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* @brief Event mask to be set on a input event.
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*/
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#define AOS_SHELL_EVENTMASK_INPUT EVENT_MASK(1) |
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/******************************************************************************/
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/* EXPORTED VARIABLES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL TYPES */
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/******************************************************************************/
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/*
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* forward declarations
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*/
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static size_t _channelwrite(void *instance, const uint8_t *bp, size_t n); |
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static size_t _channelread(void *instance, uint8_t *bp, size_t n); |
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static msg_t _channelput(void *instance, uint8_t b); |
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static msg_t _channelget(void *instance); |
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static msg_t _channelputt(void *instance, uint8_t b, sysinterval_t time); |
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static msg_t _channelgett(void *instance, sysinterval_t time); |
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static size_t _channelwritet(void *instance, const uint8_t *bp, size_t n, sysinterval_t time); |
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static size_t _channelreadt(void *instance, uint8_t *bp, size_t n, sysinterval_t time); |
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static msg_t _channelctl(void *instance, unsigned int operation, void *arg); |
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static size_t _streamwrite(void *instance, const uint8_t *bp, size_t n); |
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static size_t _stremread(void *instance, uint8_t *bp, size_t n); |
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static msg_t _streamput(void *instance, uint8_t b); |
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static msg_t _streamget(void *instance); |
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static const struct AosShellChannelVMT _channelvmt = { |
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(size_t) 0,
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_channelwrite, |
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_channelread, |
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_channelput, |
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_channelget, |
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_channelputt, |
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_channelgett, |
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_channelwritet, |
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_channelreadt, |
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_channelctl, |
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}; |
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static const struct AosShellStreamVMT _streamvmt = { |
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(size_t) 0,
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_streamwrite, |
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_stremread, |
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_streamput, |
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_streamget, |
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}; |
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/**
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* @brief Enumerator of special keyboard keys.
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*/
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typedef enum special_key { |
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KEY_UNKNOWN, /**< any/unknow key */
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KEY_AMBIGUOUS, /**< key is ambiguous */
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KEY_TAB, /**< tabulator key */
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KEY_ESCAPE, /**< escape key */
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KEY_BACKSPACE, /**< backspace key */
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KEY_INSERT, /**< insert key */
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KEY_DELETE, /**< delete key */
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KEY_HOME, /**< home key */
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KEY_END, /**< end key */
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KEY_PAGE_UP, /**< page up key */
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KEY_PAGE_DOWN, /**< page down key */
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KEY_ARROW_UP, /**< arrow up key */
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KEY_ARROW_DOWN, /**< arrow down key */
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KEY_ARROW_LEFT, /**< arrow left key */
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KEY_ARROW_RIGHT, /**< arrow right key */
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} special_key_t; |
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/**
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* @brief Enumerator for case (in)sensitive character matching.
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*/
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typedef enum charmatch { |
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CHAR_MATCH_NOT = 0, /**< Characters do not match at all. */ |
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CHAR_MATCH_NCASE = 1, /**< Characters would match case insensitive. */ |
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CHAR_MATCH_CASE = 2, /**< Characters do match with case. */ |
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} charmatch_t; |
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/******************************************************************************/
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/* LOCAL VARIABLES */
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/******************************************************************************/
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/******************************************************************************/
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/* LOCAL FUNCTIONS */
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/******************************************************************************/
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/**
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* @brief Implementation of the BaseAsynchronous write() method (inherited from BaseSequentialStream).
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*/
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static size_t _channelwrite(void *instance, const uint8_t *bp, size_t n) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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return streamWrite(((AosShellChannel*)instance)->asyncchannel, bp, n);
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} else {
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return 0; |
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous read() method (inherited from BaseSequentialStream).
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*/
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static size_t _channelread(void *instance, uint8_t *bp, size_t n) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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return streamRead(((AosShellChannel*)instance)->asyncchannel, bp, n);
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} else {
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return 0; |
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous put() method (inherited from BaseSequentialStream).
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*/
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static msg_t _channelput(void *instance, uint8_t b) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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return streamPut(((AosShellChannel*)instance)->asyncchannel, b);
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} else {
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return MSG_RESET;
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous get() method (inherited from BaseSequentialStream).
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*/
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static msg_t _channelget(void *instance) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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return streamGet(((AosShellChannel*)instance)->asyncchannel);
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} else {
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return MSG_RESET;
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous putt() method.
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*/
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static msg_t _channelputt(void *instance, uint8_t b, sysinterval_t time) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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return chnPutTimeout(((AosShellChannel*)instance)->asyncchannel, b, time);
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} else {
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return MSG_RESET;
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous gett() method.
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*/
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static msg_t _channelgett(void *instance, sysinterval_t time) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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return chnGetTimeout(((AosShellChannel*)instance)->asyncchannel, time);
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} else {
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return MSG_RESET;
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous writet() method.
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*/
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static size_t _channelwritet(void *instance, const uint8_t *bp, size_t n, sysinterval_t time) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_OUTPUT_ENABLED) {
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return chnWriteTimeout(((AosShellChannel*)instance)->asyncchannel, bp, n, time);
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} else {
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return 0; |
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronous readt() method.
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*/
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static size_t _channelreadt(void *instance, uint8_t *bp, size_t n, sysinterval_t time) |
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{
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if (((AosShellChannel*)instance)->flags & AOS_SHELLCHANNEL_INPUT_ENABLED) {
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return chnReadTimeout(((AosShellChannel*)instance)->asyncchannel, bp, n, time);
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} else {
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return 0; |
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} |
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} |
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/**
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* @brief Implementation of the BaseAsynchronousChannel ctl() method.
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*/
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static msg_t _channelctl(void *instance, unsigned int operation, void *arg) |
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{
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(void) instance;
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switch (operation) {
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case CHN_CTL_NOP:
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osalDbgCheck(arg == NULL);
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break;
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case CHN_CTL_INVALID:
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osalDbgAssert(false, "invalid CTL operation"); |
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break;
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default:
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break;
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} |
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return MSG_OK;
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} |
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static size_t _streamwrite(void *instance, const uint8_t *bp, size_t n) |
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{
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aosDbgCheck(instance != NULL);
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// local variables
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AosShellChannel* channel = ((AosShellStream*)instance)->channel; |
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size_t bytes; |
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size_t maxbytes = 0;
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// iterate through the list of channels
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while (channel != NULL) { |
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bytes = streamWrite(channel, bp, n); |
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maxbytes = (bytes > maxbytes) ? bytes : maxbytes; |
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channel = channel->next; |
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} |
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return maxbytes;
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} |
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static size_t _stremread(void *instance, uint8_t *bp, size_t n) |
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{
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(void)instance;
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(void)bp;
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(void)n;
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return 0; |
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} |
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static msg_t _streamput(void *instance, uint8_t b) |
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{
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aosDbgCheck(instance != NULL);
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// local variables
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AosShellChannel* channel = ((AosShellStream*)instance)->channel; |
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msg_t ret = MSG_OK; |
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// iterate through the list of channels
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while (channel != NULL) { |
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msg_t ret_ = streamPut(channel, b); |
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ret = (ret_ < ret) ? ret_ : ret; |
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channel = channel->next; |
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} |
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return ret;
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} |
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static msg_t _streamget(void *instance) |
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{
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(void)instance;
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return 0; |
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} |
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/**
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* @brief Print the shell prompt
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* @details Depending on the configuration flags, the system uptime is printed before the prompt string.
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*
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* @param[in] shell Pointer to the shell object.
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*/
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static void _printPrompt(aos_shell_t* shell) |
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{
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aosDbgCheck(shell != NULL);
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// print some time informattion before prompt if configured
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if (shell->config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) {
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// printf the system uptime
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if ((shell->config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) == AOS_SHELL_CONFIG_PROMPT_UPTIME) {
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// get current system uptime
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aos_timestamp_t uptime; |
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aosSysGetUptime(&uptime); |
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chprintf((BaseSequentialStream*)&shell->stream, "[%01u:%02u:%02u:%02u:%03u:%03u] ",
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(uint32_t)(uptime / MICROSECONDS_PER_DAY), |
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(uint8_t)(uptime % MICROSECONDS_PER_DAY / MICROSECONDS_PER_HOUR), |
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(uint8_t)(uptime % MICROSECONDS_PER_HOUR / MICROSECONDS_PER_MINUTE), |
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(uint8_t)(uptime % MICROSECONDS_PER_MINUTE / MICROSECONDS_PER_SECOND), |
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(uint16_t)(uptime % MICROSECONDS_PER_SECOND / MICROSECONDS_PER_MILLISECOND), |
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(uint16_t)(uptime % MICROSECONDS_PER_MILLISECOND / MICROSECONDS_PER_MICROSECOND)); |
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} |
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else if ((shell->config & (AOS_SHELL_CONFIG_PROMPT_UPTIME | AOS_SHELL_CONFIG_PROMPT_DATETIME)) == AOS_SHELL_CONFIG_PROMPT_DATETIME) { |
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// get current RTC time
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struct tm dt;
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aosSysGetDateTime(&dt); |
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chprintf((BaseSequentialStream*)&shell->stream, "[%02u-%02u-%04u|%02u:%02u:%02u] ",
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dt.tm_mday, |
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dt.tm_mon + 1,
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dt.tm_year + 1900,
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dt.tm_hour, |
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dt.tm_min, |
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dt.tm_sec); |
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} |
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else {
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aosDbgAssert(false);
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} |
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} |
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// print the actual prompt string
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if (shell->prompt && !(shell->config & AOS_SHELL_CONFIG_PROMPT_MINIMAL)) {
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chprintf((BaseSequentialStream*)&shell->stream, "%s$ ", shell->prompt);
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} else {
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chprintf((BaseSequentialStream*)&shell->stream, "%>$ ");
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} |
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return;
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} |
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/**
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* @brief Interprete a escape sequence
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* @details This function interpretes escape sequences (starting with ASCII
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* "Escape" character 0x1B) according to the VT100 / VT52 ANSI escape
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* sequence definitions.
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* @note Only the most important escape sequences are implemented yet.
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*
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* @param[in] seq Character sequence to interprete.
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* Must be terminated by NUL byte.
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*
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* @return A @p special_key value.
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*/
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static special_key_t _interpreteEscapeSequence(const char seq[]) |
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{
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// local variables
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bool ambiguous = false; |
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int cmp = 0; |
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// TAB
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/* not supported yet; use "\x09" instead */
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// BACKSPACE
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/* not supported yet; use "\x08" instead */
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// ESCAPE
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cmp = strcmp(seq, "\x1B");
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if (cmp == 0) { |
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return KEY_ESCAPE;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// INSERT
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cmp = strcmp(seq, "\x1B\x5B\x32\x7E");
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if (cmp == 0) { |
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return KEY_INSERT;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// DELETE
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cmp = strcmp(seq, "\x1B\x5B\x33\x7E");
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if (cmp == 0) { |
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return KEY_DELETE;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// HOME
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cmp = strcmp(seq, "\x1B\x5B\x48");
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if (cmp == 0) { |
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return KEY_HOME;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// END
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cmp = strcmp(seq, "\x1B\x5B\x46");
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if (cmp == 0) { |
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return KEY_END;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// PAGE UP
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cmp = strcmp(seq, "\x1B\x5B\x35\x7E");
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if (cmp == 0) { |
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return KEY_PAGE_UP;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// PAGE DOWN
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cmp = strcmp(seq, "\x1B\x5B\x36\x7E");
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if (cmp == 0) { |
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return KEY_PAGE_DOWN;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// ARROW UP
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cmp = strcmp(seq, "\x1B\x5B\x41");
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if (cmp == 0) { |
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return KEY_ARROW_UP;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// ARROW DOWN
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cmp = strcmp(seq, "\x1B\x5B\x42");
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if (cmp == 0) { |
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return KEY_ARROW_DOWN;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// ARROW LEFT
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cmp = strcmp(seq, "\x1B\x5B\x44");
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if (cmp == 0) { |
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return KEY_ARROW_LEFT;
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} else {
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ambiguous |= (cmp < 0);
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} |
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// ARROW RIGHT
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cmp = strcmp(seq, "\x1B\x5B\x43");
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if (cmp == 0) { |
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return KEY_ARROW_RIGHT;
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} else {
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ambiguous |= (cmp < 0);
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} |
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return ambiguous ? KEY_AMBIGUOUS : KEY_UNKNOWN;
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} |
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/**
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* @brief Move the cursor in the terminal
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*
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* @param[in] shell Pointer to the shell object.
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* @param[in] from Starting position of the cursor.
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* @param[in] to Target position to move the cursor to.
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*
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* @return The number of positions moved.
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*/
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static int _moveCursor(aos_shell_t* shell, const size_t from, const size_t to) |
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{
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aosDbgCheck(shell != NULL);
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// local variables
|
| 482 |
size_t pos = from; |
| 483 |
|
| 484 |
// move cursor left by printing backspaces
|
| 485 |
while (pos > to) {
|
| 486 |
streamPut(&shell->stream, '\b');
|
| 487 |
--pos; |
| 488 |
} |
| 489 |
|
| 490 |
// move cursor right by printing line content
|
| 491 |
while (pos < to) {
|
| 492 |
streamPut(&shell->stream, shell->line[pos]); |
| 493 |
++pos; |
| 494 |
} |
| 495 |
|
| 496 |
return (int)pos - (int)from; |
| 497 |
} |
| 498 |
|
| 499 |
/**
|
| 500 |
* @brief Print content of the shell line
|
| 501 |
*
|
| 502 |
* @param[in] shell Pointer to the shell object.
|
| 503 |
* @param[in] from First position to start printing from.
|
| 504 |
* @param[in] to Position after the last character to print.
|
| 505 |
*
|
| 506 |
* @return Number of characters printed.
|
| 507 |
*/
|
| 508 |
static inline size_t _printLine(aos_shell_t* shell, const size_t from, const size_t to) |
| 509 |
{
|
| 510 |
aosDbgCheck(shell != NULL);
|
| 511 |
|
| 512 |
// local variables
|
| 513 |
size_t cnt; |
| 514 |
|
| 515 |
for (cnt = 0; from + cnt < to; ++cnt) { |
| 516 |
streamPut(&shell->stream, shell->line[from + cnt]); |
| 517 |
} |
| 518 |
|
| 519 |
return cnt;
|
| 520 |
} |
| 521 |
|
| 522 |
/**
|
| 523 |
* @brief Compare two characters.
|
| 524 |
*
|
| 525 |
* @param[in] lhs First character to compare.
|
| 526 |
* @param[in] rhs Second character to compare.
|
| 527 |
*
|
| 528 |
* @return How well the characters match.
|
| 529 |
*/
|
| 530 |
static inline charmatch_t _charcmp(char lhs, char rhs) |
| 531 |
{
|
| 532 |
// if lhs is a upper case letter and rhs is a lower case letter
|
| 533 |
if (lhs >= 'A' && lhs <= 'Z' && rhs >= 'a' && rhs <= 'z') { |
| 534 |
return (lhs == (rhs - 'a' + 'A')) ? CHAR_MATCH_NCASE : CHAR_MATCH_NOT; |
| 535 |
} |
| 536 |
// if lhs is a lower case letter and rhs is a upper case letter
|
| 537 |
else if (lhs >= 'a' && lhs <= 'z' && rhs >= 'A' && rhs <= 'Z') { |
| 538 |
return ((lhs - 'a' + 'A') == rhs) ? CHAR_MATCH_NCASE : CHAR_MATCH_NOT; |
| 539 |
} |
| 540 |
// default
|
| 541 |
else {
|
| 542 |
return (lhs == rhs) ? CHAR_MATCH_CASE : CHAR_MATCH_NOT;
|
| 543 |
} |
| 544 |
} |
| 545 |
|
| 546 |
/**
|
| 547 |
* @brief Maps an character from ASCII to a modified custom encoding.
|
| 548 |
* @details The custom character encoding is very similar to ASCII and has the following structure:
|
| 549 |
* 0x00=NULL ... 0x40='@' (identically to ASCII)
|
| 550 |
* 0x4A='a'; 0x4B='A'; 0x4C='b'; 0x4D='B' ... 0x73='z'; 0x74='Z' (custom letter order)
|
| 551 |
* 0x75='[' ... 0x7A='`' (0x5B..0x60 is ASCII)
|
| 552 |
* 0x7B='{' ... 0x7F=DEL (identically to ASCII)
|
| 553 |
*
|
| 554 |
* @param[in] c Character to map to the custom encoding.
|
| 555 |
*
|
| 556 |
* @return The customly encoded character.
|
| 557 |
*/
|
| 558 |
static inline char _mapAscii2Custom(const char c) |
| 559 |
{
|
| 560 |
if (c >= 'A' && c <= 'Z') { |
| 561 |
return ((c - 'A') * 2) + 'A' + 1; |
| 562 |
} else if (c > 'Z' && c < 'a') { |
| 563 |
return c + ('z' - 'a') + 1; |
| 564 |
} else if (c >= 'a' && c <= 'z') { |
| 565 |
return ((c - 'a') * 2) + 'A'; |
| 566 |
} else {
|
| 567 |
return c;
|
| 568 |
} |
| 569 |
} |
| 570 |
|
| 571 |
/**
|
| 572 |
* @brief Compares two strings wrt letter case.
|
| 573 |
* @details Comparisson uses a custom character encoding or mapping.
|
| 574 |
* See @p _mapAscii2Custom for details.
|
| 575 |
*
|
| 576 |
* @param[in] str1 First string to compare.
|
| 577 |
* @param[in] str2 Second string to compare.
|
| 578 |
* @param[in] cs Flag indicating whether comparison shall be case sensitive.
|
| 579 |
* @param[in,out] n Maximum number of character to compare (in) and number of matching characters (out).
|
| 580 |
* If a null pointer is specified, this parameter is ignored.
|
| 581 |
* If the value pointed to is zero, comarison will not be limited.
|
| 582 |
* @param[out] m Optional indicator whether there was at least one case mismatch.
|
| 583 |
*
|
| 584 |
* @return Integer value indicating the relationship between the strings.
|
| 585 |
* @retval <0 The first character that does not match has a lower value in str1 than in str2.
|
| 586 |
* @retval 0 The contents of both strings are equal.
|
| 587 |
* @retval >0 The first character that does not match has a greater value in str1 than in str2.
|
| 588 |
*/
|
| 589 |
static int _strccmp(const char *str1, const char *str2, bool cs, size_t* n, charmatch_t* m) |
| 590 |
{
|
| 591 |
aosDbgCheck(str1 != NULL);
|
| 592 |
aosDbgCheck(str2 != NULL);
|
| 593 |
|
| 594 |
// initialize variables
|
| 595 |
if (m) {
|
| 596 |
*m = CHAR_MATCH_NOT; |
| 597 |
} |
| 598 |
size_t i = 0;
|
| 599 |
|
| 600 |
// iterate through the strings
|
| 601 |
while ((n == NULL) || (*n == 0) || (*n > 0 && i < *n)) { |
| 602 |
// break on NUL
|
| 603 |
if (str1[i] == '\0' || str2[i] == '\0') { |
| 604 |
if (n) {
|
| 605 |
*n = i; |
| 606 |
} |
| 607 |
break;
|
| 608 |
} |
| 609 |
// compare character
|
| 610 |
const charmatch_t match = _charcmp(str1[i], str2[i]);
|
| 611 |
if ((match == CHAR_MATCH_CASE) || (!cs && match == CHAR_MATCH_NCASE)) {
|
| 612 |
if (m != NULL && *m != CHAR_MATCH_NCASE) { |
| 613 |
*m = match; |
| 614 |
} |
| 615 |
++i; |
| 616 |
} else {
|
| 617 |
if (n) {
|
| 618 |
*n = i; |
| 619 |
} |
| 620 |
break;
|
| 621 |
} |
| 622 |
} |
| 623 |
|
| 624 |
return _mapAscii2Custom(str1[i]) - _mapAscii2Custom(str2[i]);
|
| 625 |
} |
| 626 |
|
| 627 |
/**
|
| 628 |
* @brief Read input from a channel as long as there is data available.
|
| 629 |
*
|
| 630 |
* @param[in] shell Pointer to the shell object.
|
| 631 |
* @param[in] channel The channel to read from.
|
| 632 |
* @param[out] n Pointer to a variable to store the number of read characters to.
|
| 633 |
*
|
| 634 |
* @return
|
| 635 |
*/
|
| 636 |
static aos_status_t _readChannel(aos_shell_t* shell, AosShellChannel* channel, size_t* n)
|
| 637 |
{
|
| 638 |
aosDbgCheck(shell != NULL);
|
| 639 |
aosDbgCheck(channel != NULL);
|
| 640 |
aosDbgCheck(n != NULL);
|
| 641 |
|
| 642 |
// local variables
|
| 643 |
aos_shellaction_t action = AOS_SHELL_ACTION_NONE; |
| 644 |
char c;
|
| 645 |
special_key_t key; |
| 646 |
|
| 647 |
// initialize output variables
|
| 648 |
*n = 0;
|
| 649 |
|
| 650 |
// read character by character from the channel
|
| 651 |
while (chnReadTimeout(channel, (uint8_t*)&c, 1, TIME_IMMEDIATE)) { |
| 652 |
key = KEY_UNKNOWN; |
| 653 |
|
| 654 |
// parse escape sequence
|
| 655 |
if (shell->inputdata.escp > 0) { |
| 656 |
shell->inputdata.escseq[shell->inputdata.escp] = c; |
| 657 |
++shell->inputdata.escp; |
| 658 |
key = _interpreteEscapeSequence(shell->inputdata.escseq); |
| 659 |
if (key == KEY_AMBIGUOUS) {
|
| 660 |
// read next byte to resolve ambiguity
|
| 661 |
continue;
|
| 662 |
} else {
|
| 663 |
/*
|
| 664 |
* If the escape sequence could either be parsed sucessfully
|
| 665 |
* or there is no match (KEY_UNKNOWN),
|
| 666 |
* reset the sequence variable and interprete key/character
|
| 667 |
*/
|
| 668 |
shell->inputdata.escp = 0;
|
| 669 |
memset(shell->inputdata.escseq, '\0', sizeof(shell->inputdata.escseq)*sizeof(shell->inputdata.escseq[0])); |
| 670 |
} |
| 671 |
} |
| 672 |
|
| 673 |
/* interprete keys or character */
|
| 674 |
{
|
| 675 |
// default
|
| 676 |
action = AOS_SHELL_ACTION_NONE; |
| 677 |
|
| 678 |
// printable character
|
| 679 |
if (key == KEY_UNKNOWN && c >= '\x20' && c <= '\x7E') { |
| 680 |
action = AOS_SHELL_ACTION_READCHAR; |
| 681 |
} |
| 682 |
|
| 683 |
// tab key or character
|
| 684 |
else if (key == KEY_TAB || c == '\x09') { |
| 685 |
/*
|
| 686 |
* pressing tab once applies auto fill
|
| 687 |
* pressing tab a second time prints suggestions
|
| 688 |
*/
|
| 689 |
if (shell->inputdata.lastaction == AOS_SHELL_ACTION_AUTOFILL || shell->inputdata.lastaction == AOS_SHELL_ACTION_SUGGEST) {
|
| 690 |
action = AOS_SHELL_ACTION_SUGGEST; |
| 691 |
} else {
|
| 692 |
action = AOS_SHELL_ACTION_AUTOFILL; |
| 693 |
} |
| 694 |
} |
| 695 |
|
| 696 |
// INS key
|
| 697 |
else if (key == KEY_INSERT) { |
| 698 |
action = AOS_SHELL_ACTION_INSERTTOGGLE; |
| 699 |
} |
| 700 |
|
| 701 |
// DEL key or character
|
| 702 |
else if (key == KEY_DELETE || c == '\x7F') { |
| 703 |
// ignore if cursor is at very right
|
| 704 |
if (shell->inputdata.cursorpos < shell->inputdata.lineend) {
|
| 705 |
action = AOS_SHELL_ACTION_DELETEFORWARD; |
| 706 |
} |
| 707 |
} |
| 708 |
|
| 709 |
// backspace key or character
|
| 710 |
else if (key == KEY_BACKSPACE || c == '\x08') { |
| 711 |
// ignore if cursor is at very left
|
| 712 |
if (shell->inputdata.cursorpos > 0) { |
| 713 |
action = AOS_SHELL_ACTION_DELETEBACKWARD; |
| 714 |
} |
| 715 |
} |
| 716 |
|
| 717 |
// 'page up' of 'arrow up' key
|
| 718 |
else if (key == KEY_PAGE_UP || key == KEY_ARROW_UP) { |
| 719 |
// ignore if there was some input
|
| 720 |
if (shell->inputdata.noinput) {
|
| 721 |
action = AOS_SHELL_ACTION_RECALLLAST; |
| 722 |
} |
| 723 |
} |
| 724 |
|
| 725 |
// 'page down' key, 'arrow done' key, 'end of test' character or 'end of transmission' character
|
| 726 |
else if (key == KEY_PAGE_DOWN || key == KEY_ARROW_DOWN || c == '\x03' || c == '\x03') { |
| 727 |
// ignore if line is empty
|
| 728 |
if (shell->inputdata.lineend > 0) { |
| 729 |
action = AOS_SHELL_ACTION_CLEAR; |
| 730 |
} |
| 731 |
} |
| 732 |
|
| 733 |
// 'home' key
|
| 734 |
else if (key == KEY_HOME) { |
| 735 |
// ignore if cursor is very left
|
| 736 |
if (shell->inputdata.cursorpos > 0) { |
| 737 |
action = AOS_SHELL_ACTION_CURSOR2START; |
| 738 |
} |
| 739 |
} |
| 740 |
|
| 741 |
// 'end' key
|
| 742 |
else if (key == KEY_END) { |
| 743 |
// ignore if cursos is very right
|
| 744 |
if (shell->inputdata.cursorpos < shell->inputdata.lineend) {
|
| 745 |
action = AOS_SHELL_ACTION_CURSOR2END; |
| 746 |
} |
| 747 |
} |
| 748 |
|
| 749 |
// 'arrow left' key
|
| 750 |
else if (key == KEY_ARROW_LEFT) { |
| 751 |
// ignore if cursor is very left
|
| 752 |
if (shell->inputdata.cursorpos > 0) { |
| 753 |
action = AOS_SHELL_ACTION_CURSORLEFT; |
| 754 |
} |
| 755 |
} |
| 756 |
|
| 757 |
// 'arrow right' key
|
| 758 |
else if (key == KEY_ARROW_RIGHT) { |
| 759 |
// irgnore if cursor is very right
|
| 760 |
if (shell->inputdata.cursorpos < shell->inputdata.lineend) {
|
| 761 |
action = AOS_SHELL_ACTION_CURSORRIGHT; |
| 762 |
} |
| 763 |
} |
| 764 |
|
| 765 |
// carriage return ('\r') or line feed ('\n') character
|
| 766 |
else if (c == '\x0D' || c == '\x0A') { |
| 767 |
action = AOS_SHELL_ACTION_EXECUTE; |
| 768 |
} |
| 769 |
|
| 770 |
// ESC key or [ESCAPE] character
|
| 771 |
else if (key == KEY_ESCAPE || c == '\x1B') { |
| 772 |
action = AOS_SHELL_ACTION_ESCSTART; |
| 773 |
} |
| 774 |
} |
| 775 |
|
| 776 |
/* handle function */
|
| 777 |
switch (action) {
|
| 778 |
case AOS_SHELL_ACTION_READCHAR:
|
| 779 |
{
|
| 780 |
// line is full
|
| 781 |
if (shell->inputdata.lineend + 1 >= shell->linesize) { |
| 782 |
_moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 783 |
chprintf((BaseSequentialStream*)&shell->stream, "\n\tmaximum line width reached\n");
|
| 784 |
_printPrompt(shell); |
| 785 |
_printLine(shell, 0, shell->inputdata.lineend);
|
| 786 |
_moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
| 787 |
} |
| 788 |
// read character
|
| 789 |
else {
|
| 790 |
// clear old line content on first input
|
| 791 |
if (shell->inputdata.noinput) {
|
| 792 |
memset(shell->line, '\0', shell->linesize);
|
| 793 |
shell->inputdata.noinput = false;
|
| 794 |
} |
| 795 |
// overwrite content
|
| 796 |
if (shell->config & AOS_SHELL_CONFIG_INPUT_OVERWRITE) {
|
| 797 |
shell->line[shell->inputdata.cursorpos] = c; |
| 798 |
++shell->inputdata.cursorpos; |
| 799 |
shell->inputdata.lineend = (shell->inputdata.cursorpos > shell->inputdata.lineend) ? shell->inputdata.cursorpos : shell->inputdata.lineend; |
| 800 |
streamPut(&shell->stream, (uint8_t)c); |
| 801 |
} |
| 802 |
// insert character
|
| 803 |
else {
|
| 804 |
memmove(&(shell->line[shell->inputdata.cursorpos+1]), &(shell->line[shell->inputdata.cursorpos]), shell->inputdata.lineend - shell->inputdata.cursorpos);
|
| 805 |
shell->line[shell->inputdata.cursorpos] = c; |
| 806 |
++shell->inputdata.lineend; |
| 807 |
_printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 808 |
++shell->inputdata.cursorpos; |
| 809 |
_moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
| 810 |
} |
| 811 |
} |
| 812 |
break;
|
| 813 |
} |
| 814 |
|
| 815 |
case AOS_SHELL_ACTION_AUTOFILL:
|
| 816 |
{
|
| 817 |
const char* fill = shell->line; |
| 818 |
size_t cmatch = shell->inputdata.cursorpos; |
| 819 |
charmatch_t matchlevel = CHAR_MATCH_NOT; |
| 820 |
size_t n; |
| 821 |
// iterate through command list
|
| 822 |
for (aos_shellcommand_t* cmd = shell->commands; cmd != NULL; cmd = cmd->next) { |
| 823 |
// compare current match with command
|
| 824 |
n = cmatch; |
| 825 |
charmatch_t mlvl = CHAR_MATCH_NOT; |
| 826 |
_strccmp(fill, cmd->name, shell->config & AOS_SHELL_CONFIG_MATCH_CASE, (n == 0) ? NULL : &n, &mlvl); |
| 827 |
const int cmp = (n < cmatch) ? |
| 828 |
(n - cmatch) : |
| 829 |
(cmd->name[n] != '\0') ?
|
| 830 |
strlen(cmd->name) - n : |
| 831 |
0;
|
| 832 |
// if an exact match was found
|
| 833 |
if (cmatch + cmp == shell->inputdata.cursorpos) {
|
| 834 |
cmatch = shell->inputdata.cursorpos; |
| 835 |
fill = cmd->name; |
| 836 |
// break the loop only if there are no case mismatches with the input
|
| 837 |
n = shell->inputdata.cursorpos; |
| 838 |
_strccmp(fill, shell->line, false, &n, &mlvl);
|
| 839 |
if (mlvl == CHAR_MATCH_CASE) {
|
| 840 |
break;
|
| 841 |
} |
| 842 |
} |
| 843 |
// if a not exact match was found
|
| 844 |
else if (cmatch + cmp > shell->inputdata.cursorpos) { |
| 845 |
// if this is the first one
|
| 846 |
if (fill == shell->line) {
|
| 847 |
cmatch += cmp; |
| 848 |
fill = cmd->name; |
| 849 |
} |
| 850 |
// if this is a worse one
|
| 851 |
else if ((cmp < 0) || (cmp == 0 && mlvl == CHAR_MATCH_CASE)) { |
| 852 |
cmatch += cmp; |
| 853 |
} |
| 854 |
} |
| 855 |
// non matching commands are ignored
|
| 856 |
else {}
|
| 857 |
} |
| 858 |
// evaluate if there are case mismatches
|
| 859 |
n = cmatch; |
| 860 |
_strccmp(shell->line, fill, shell->config & AOS_SHELL_CONFIG_MATCH_CASE, &n, &matchlevel); |
| 861 |
// print the auto fill if any
|
| 862 |
if (cmatch > shell->inputdata.cursorpos || (cmatch == shell->inputdata.cursorpos && matchlevel == CHAR_MATCH_NCASE)) {
|
| 863 |
shell->inputdata.noinput = false;
|
| 864 |
// limit auto fill so it will not overflow the line width
|
| 865 |
if (shell->inputdata.lineend + (cmatch - shell->inputdata.cursorpos) > shell->linesize) {
|
| 866 |
cmatch = shell->linesize - shell->inputdata.lineend + shell->inputdata.cursorpos; |
| 867 |
} |
| 868 |
// move trailing memory further in the line
|
| 869 |
memmove(&(shell->line[cmatch]), &(shell->line[shell->inputdata.cursorpos]), shell->inputdata.lineend - shell->inputdata.cursorpos); |
| 870 |
shell->inputdata.lineend += cmatch - shell->inputdata.cursorpos; |
| 871 |
// if there was no incorrect case when matching
|
| 872 |
if (matchlevel == CHAR_MATCH_CASE) {
|
| 873 |
// insert fill command name to line
|
| 874 |
memcpy(&(shell->line[shell->inputdata.cursorpos]), &(fill[shell->inputdata.cursorpos]), cmatch - shell->inputdata.cursorpos); |
| 875 |
// print the output
|
| 876 |
_printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 877 |
} else {
|
| 878 |
// overwrite line with fill command name
|
| 879 |
memcpy(shell->line, fill, cmatch); |
| 880 |
// reprint the whole line
|
| 881 |
_moveCursor(shell, shell->inputdata.cursorpos, 0);
|
| 882 |
_printLine(shell, 0, shell->inputdata.lineend);
|
| 883 |
} |
| 884 |
// move cursor to the end of the matching sequence
|
| 885 |
shell->inputdata.cursorpos = cmatch; |
| 886 |
_moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
| 887 |
} |
| 888 |
break;
|
| 889 |
} |
| 890 |
|
| 891 |
case AOS_SHELL_ACTION_SUGGEST:
|
| 892 |
{
|
| 893 |
unsigned int matches = 0; |
| 894 |
// iterate through command list
|
| 895 |
for (aos_shellcommand_t* cmd = shell->commands; cmd != NULL; cmd = cmd->next) { |
| 896 |
// compare line content with command, excpet if cursorpos=0
|
| 897 |
size_t i = shell->inputdata.cursorpos; |
| 898 |
if (shell->inputdata.cursorpos > 0) { |
| 899 |
_strccmp(shell->line, cmd->name, true, &i, NULL); |
| 900 |
} |
| 901 |
const int cmp = (i < shell->inputdata.cursorpos) ? |
| 902 |
(i - shell->inputdata.cursorpos) : |
| 903 |
(cmd->name[i] != '\0') ?
|
| 904 |
strlen(cmd->name) - i : |
| 905 |
0;
|
| 906 |
// if a match was found
|
| 907 |
if (cmp > 0) { |
| 908 |
// if this is the first one
|
| 909 |
if (matches == 0) { |
| 910 |
_moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 911 |
streamPut(&shell->stream, '\n');
|
| 912 |
} |
| 913 |
// print the command
|
| 914 |
chprintf((BaseSequentialStream*)&shell->stream, "\t%s\n", cmd->name);
|
| 915 |
++matches; |
| 916 |
} |
| 917 |
} |
| 918 |
// reprint the prompt and line if any matches have been found
|
| 919 |
if (matches > 0) { |
| 920 |
_printPrompt(shell); |
| 921 |
_printLine(shell, 0, shell->inputdata.lineend);
|
| 922 |
_moveCursor(shell, shell->inputdata.lineend, shell->inputdata.cursorpos); |
| 923 |
shell->inputdata.noinput = false;
|
| 924 |
} |
| 925 |
break;
|
| 926 |
} |
| 927 |
|
| 928 |
case AOS_SHELL_ACTION_INSERTTOGGLE:
|
| 929 |
{
|
| 930 |
if (shell->config & AOS_SHELL_CONFIG_INPUT_OVERWRITE) {
|
| 931 |
shell->config &= ~AOS_SHELL_CONFIG_INPUT_OVERWRITE; |
| 932 |
} else {
|
| 933 |
shell->config |= AOS_SHELL_CONFIG_INPUT_OVERWRITE; |
| 934 |
} |
| 935 |
break;
|
| 936 |
} |
| 937 |
|
| 938 |
case AOS_SHELL_ACTION_DELETEFORWARD:
|
| 939 |
{
|
| 940 |
--shell->inputdata.lineend; |
| 941 |
memmove(&(shell->line[shell->inputdata.cursorpos]), &(shell->line[shell->inputdata.cursorpos+1]), shell->inputdata.lineend - shell->inputdata.cursorpos);
|
| 942 |
_printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 943 |
streamPut(&shell->stream, ' ');
|
| 944 |
_moveCursor(shell, shell->inputdata.lineend + 1, shell->inputdata.cursorpos);
|
| 945 |
break;
|
| 946 |
} |
| 947 |
|
| 948 |
case AOS_SHELL_ACTION_DELETEBACKWARD:
|
| 949 |
{
|
| 950 |
--shell->inputdata.cursorpos; |
| 951 |
memmove(&(shell->line[shell->inputdata.cursorpos]), &(shell->line[shell->inputdata.cursorpos+1]), shell->inputdata.lineend - shell->inputdata.cursorpos);
|
| 952 |
--shell->inputdata.lineend; |
| 953 |
shell->line[shell->inputdata.lineend] = '\0';
|
| 954 |
_moveCursor(shell, shell->inputdata.cursorpos + 1, shell->inputdata.cursorpos);
|
| 955 |
_printLine(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 956 |
streamPut(&shell->stream, ' ');
|
| 957 |
_moveCursor(shell, shell->inputdata.lineend+1, shell->inputdata.cursorpos);
|
| 958 |
break;
|
| 959 |
} |
| 960 |
|
| 961 |
case AOS_SHELL_ACTION_RECALLLAST:
|
| 962 |
{
|
| 963 |
// replace any intermediate NUL bytes with spaces
|
| 964 |
shell->inputdata.lineend = 0;
|
| 965 |
size_t nul_start = 0;
|
| 966 |
size_t nul_end = 0;
|
| 967 |
// search line for a NUL byte
|
| 968 |
while (nul_start < shell->linesize) {
|
| 969 |
if (shell->line[nul_start] == '\0') { |
| 970 |
nul_end = nul_start + 1;
|
| 971 |
// keep searcjing for a byte that is not NUL
|
| 972 |
while (nul_end < shell->linesize) {
|
| 973 |
if (shell->line[nul_end] != '\0') { |
| 974 |
// an intermediate NUL sequence was found
|
| 975 |
memset(&(shell->line[nul_start]), ' ', nul_end - nul_start);
|
| 976 |
shell->inputdata.lineend = nul_end + 1;
|
| 977 |
break;
|
| 978 |
} else {
|
| 979 |
++nul_end; |
| 980 |
} |
| 981 |
} |
| 982 |
nul_start = nul_end + 1;
|
| 983 |
} else {
|
| 984 |
++shell->inputdata.lineend; |
| 985 |
++nul_start; |
| 986 |
} |
| 987 |
} |
| 988 |
shell->inputdata.cursorpos = shell->inputdata.lineend; |
| 989 |
// print the line
|
| 990 |
shell->inputdata.noinput = _printLine(shell, 0, shell->inputdata.lineend) == 0; |
| 991 |
break;
|
| 992 |
} |
| 993 |
|
| 994 |
case AOS_SHELL_ACTION_CLEAR:
|
| 995 |
{
|
| 996 |
// clear output
|
| 997 |
_moveCursor(shell, shell->inputdata.cursorpos, 0);
|
| 998 |
for (shell->inputdata.cursorpos = 0; shell->inputdata.cursorpos < shell->inputdata.lineend; ++shell->inputdata.cursorpos) { |
| 999 |
streamPut(&shell->stream, ' ');
|
| 1000 |
} |
| 1001 |
_moveCursor(shell, shell->inputdata.lineend, 0);
|
| 1002 |
shell->inputdata.cursorpos = 0;
|
| 1003 |
shell->inputdata.lineend = 0;
|
| 1004 |
shell->inputdata.noinput = true;
|
| 1005 |
break;
|
| 1006 |
} |
| 1007 |
|
| 1008 |
case AOS_SHELL_ACTION_CURSOR2START:
|
| 1009 |
{
|
| 1010 |
_moveCursor(shell, shell->inputdata.cursorpos, 0);
|
| 1011 |
shell->inputdata.cursorpos = 0;
|
| 1012 |
break;
|
| 1013 |
} |
| 1014 |
|
| 1015 |
case AOS_SHELL_ACTION_CURSOR2END:
|
| 1016 |
{
|
| 1017 |
_moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.lineend); |
| 1018 |
shell->inputdata.cursorpos = shell->inputdata.lineend; |
| 1019 |
break;
|
| 1020 |
} |
| 1021 |
|
| 1022 |
case AOS_SHELL_ACTION_CURSORLEFT:
|
| 1023 |
{
|
| 1024 |
_moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.cursorpos-1);
|
| 1025 |
--shell->inputdata.cursorpos; |
| 1026 |
break;
|
| 1027 |
} |
| 1028 |
|
| 1029 |
case AOS_SHELL_ACTION_CURSORRIGHT:
|
| 1030 |
{
|
| 1031 |
_moveCursor(shell, shell->inputdata.cursorpos, shell->inputdata.cursorpos+1);
|
| 1032 |
++shell->inputdata.cursorpos; |
| 1033 |
break;
|
| 1034 |
} |
| 1035 |
|
| 1036 |
case AOS_SHELL_ACTION_EXECUTE:
|
| 1037 |
{
|
| 1038 |
streamPut(&shell->stream, '\n');
|
| 1039 |
// set the number of read bytes and return
|
| 1040 |
if (!shell->inputdata.noinput) {
|
| 1041 |
*n = shell->linesize - shell->inputdata.lineend; |
| 1042 |
// fill the remainder of the line with NUL bytes
|
| 1043 |
memset(&(shell->line[shell->inputdata.lineend]), '\0', *n);
|
| 1044 |
// reset static variables
|
| 1045 |
shell->inputdata.noinput = true;
|
| 1046 |
} |
| 1047 |
return AOS_SUCCESS;
|
| 1048 |
} |
| 1049 |
|
| 1050 |
case AOS_SHELL_ACTION_ESCSTART:
|
| 1051 |
{
|
| 1052 |
shell->inputdata.escseq[0] = c;
|
| 1053 |
++shell->inputdata.escp; |
| 1054 |
break;
|
| 1055 |
} |
| 1056 |
|
| 1057 |
case AOS_SHELL_ACTION_NONE:
|
| 1058 |
default:
|
| 1059 |
{
|
| 1060 |
// do nothing (ignore input) and read next byte
|
| 1061 |
continue;
|
| 1062 |
} |
| 1063 |
} /* end of switch */
|
| 1064 |
|
| 1065 |
shell->inputdata.lastaction = action; |
| 1066 |
} /* end of while */
|
| 1067 |
|
| 1068 |
// no more data could be read from the channel
|
| 1069 |
return AOS_WARNING;
|
| 1070 |
} |
| 1071 |
|
| 1072 |
/**
|
| 1073 |
* @brief Parses the content of the input buffer (line) to separate arguments.
|
| 1074 |
*
|
| 1075 |
* @param[in] shell Pointer to the shell object.
|
| 1076 |
*
|
| 1077 |
* @return Number of arguments found.
|
| 1078 |
*/
|
| 1079 |
static size_t _parseArguments(aos_shell_t* shell)
|
| 1080 |
{
|
| 1081 |
aosDbgCheck(shell != NULL);
|
| 1082 |
|
| 1083 |
/*
|
| 1084 |
* States for a very small FSM.
|
| 1085 |
*/
|
| 1086 |
typedef enum { |
| 1087 |
START, |
| 1088 |
SPACE, |
| 1089 |
TEXT, |
| 1090 |
END, |
| 1091 |
} state_t; |
| 1092 |
|
| 1093 |
// local variables
|
| 1094 |
state_t state = START; |
| 1095 |
size_t arg = 0;
|
| 1096 |
|
| 1097 |
// iterate through the line
|
| 1098 |
for (char* c = shell->line; c < shell->line + shell->linesize; ++c) { |
| 1099 |
// terminate at first NUL byte
|
| 1100 |
if (*c == '\0') { |
| 1101 |
state = END; |
| 1102 |
break;
|
| 1103 |
} |
| 1104 |
// spaces become NUL bytes
|
| 1105 |
else if (*c == ' ') { |
| 1106 |
*c = '\0';
|
| 1107 |
state = SPACE; |
| 1108 |
} |
| 1109 |
// handle non-NUL bytes
|
| 1110 |
else {
|
| 1111 |
switch (state) {
|
| 1112 |
case START:
|
| 1113 |
case SPACE:
|
| 1114 |
// ignore too many arguments
|
| 1115 |
if (arg < shell->arglistsize) {
|
| 1116 |
shell->arglist[arg] = c; |
| 1117 |
} |
| 1118 |
++arg; |
| 1119 |
break;
|
| 1120 |
case TEXT:
|
| 1121 |
case END:
|
| 1122 |
default:
|
| 1123 |
break;
|
| 1124 |
} |
| 1125 |
state = TEXT; |
| 1126 |
} |
| 1127 |
} |
| 1128 |
|
| 1129 |
// set all remaining argument pointers to NULL
|
| 1130 |
for (size_t a = arg; a < shell->arglistsize; ++a) {
|
| 1131 |
shell->arglist[a] = NULL;
|
| 1132 |
} |
| 1133 |
|
| 1134 |
return arg;
|
| 1135 |
} |
| 1136 |
|
| 1137 |
/******************************************************************************/
|
| 1138 |
/* EXPORTED FUNCTIONS */
|
| 1139 |
/******************************************************************************/
|
| 1140 |
|
| 1141 |
/**
|
| 1142 |
* @brief Initializes a shell object with the specified parameters.
|
| 1143 |
*
|
| 1144 |
* @param[in] shell Pointer to the shell object.
|
| 1145 |
* @param[in] stream I/O stream to use.
|
| 1146 |
* @param[in] prompt Prompt line to print (NULL = use default prompt).
|
| 1147 |
* @param[in] line Pointer to the input buffer.
|
| 1148 |
* @param[in] linesize Size of the input buffer.
|
| 1149 |
* @param[in] arglist Pointer to the argument buffer.
|
| 1150 |
* @param[in] arglistsize Size of te argument buffer.
|
| 1151 |
*/
|
| 1152 |
void aosShellInit(aos_shell_t* shell, event_source_t* oseventsource, const char* prompt, char* line, size_t linesize, char** arglist, size_t arglistsize) |
| 1153 |
{
|
| 1154 |
aosDbgCheck(shell != NULL);
|
| 1155 |
aosDbgCheck(oseventsource != NULL);
|
| 1156 |
aosDbgCheck(line != NULL);
|
| 1157 |
aosDbgCheck(arglist != NULL);
|
| 1158 |
|
| 1159 |
// set parameters
|
| 1160 |
shell->thread = NULL;
|
| 1161 |
chEvtObjectInit(&shell->eventSource); |
| 1162 |
shell->os.eventSource = oseventsource; |
| 1163 |
aosShellStreamInit(&shell->stream); |
| 1164 |
shell->prompt = prompt; |
| 1165 |
shell->commands = NULL;
|
| 1166 |
shell->execstatus.command = NULL;
|
| 1167 |
shell->execstatus.retval = 0;
|
| 1168 |
shell->line = line; |
| 1169 |
shell->linesize = linesize; |
| 1170 |
shell->inputdata.lastaction = AOS_SHELL_ACTION_NONE; |
| 1171 |
shell->inputdata.escp = 0;
|
| 1172 |
memset(shell->inputdata.escseq, '\0', sizeof(shell->inputdata.escseq)*sizeof(shell->inputdata.escseq[0])); |
| 1173 |
shell->inputdata.cursorpos = 0;
|
| 1174 |
shell->inputdata.lineend = 0;
|
| 1175 |
shell->inputdata.noinput = true;
|
| 1176 |
shell->arglist = arglist; |
| 1177 |
shell->arglistsize = arglistsize; |
| 1178 |
shell->config = 0x00;
|
| 1179 |
|
| 1180 |
// initialize arrays
|
| 1181 |
memset(shell->line, '\0', shell->linesize);
|
| 1182 |
for (size_t a = 0; a < shell->arglistsize; ++a) { |
| 1183 |
shell->arglist[a] = NULL;
|
| 1184 |
} |
| 1185 |
|
| 1186 |
return;
|
| 1187 |
} |
| 1188 |
|
| 1189 |
/**
|
| 1190 |
* @brief Initialize an AosShellStream object.
|
| 1191 |
*
|
| 1192 |
* @param[in] stream The AosShellStrem to initialize.
|
| 1193 |
*/
|
| 1194 |
void aosShellStreamInit(AosShellStream* stream)
|
| 1195 |
{
|
| 1196 |
aosDbgCheck(stream != NULL);
|
| 1197 |
|
| 1198 |
stream->vmt = &_streamvmt; |
| 1199 |
stream->channel = NULL;
|
| 1200 |
|
| 1201 |
return;
|
| 1202 |
} |
| 1203 |
|
| 1204 |
/**
|
| 1205 |
* @brief Initialize an AosShellChannel object with the specified parameters.
|
| 1206 |
*
|
| 1207 |
* @param[in] channel The AosShellChannel to initialize.
|
| 1208 |
* @param[in] asyncchannel An BaseAsynchronousChannel this AosShellChannel is associated with.
|
| 1209 |
*/
|
| 1210 |
void aosShellChannelInit(AosShellChannel* channel, BaseAsynchronousChannel* asyncchannel)
|
| 1211 |
{
|
| 1212 |
aosDbgCheck(channel != NULL);
|
| 1213 |
aosDbgCheck(asyncchannel != NULL);
|
| 1214 |
|
| 1215 |
channel->vmt = &_channelvmt; |
| 1216 |
channel->asyncchannel = asyncchannel; |
| 1217 |
channel->listener.wflags = 0;
|
| 1218 |
channel->next = NULL;
|
| 1219 |
channel->flags = 0;
|
| 1220 |
|
| 1221 |
return;
|
| 1222 |
} |
| 1223 |
|
| 1224 |
/**
|
| 1225 |
* @brief Inserts a command to the shells list of commands.
|
| 1226 |
*
|
| 1227 |
* @param[in] shell Pointer to the shell object.
|
| 1228 |
* @param[in] cmd Pointer to the command to add.
|
| 1229 |
*
|
| 1230 |
* @return A status value.
|
| 1231 |
* @retval AOS_SUCCESS The command was added successfully.
|
| 1232 |
* @retval AOS_ERROR Another command with identical name already exists.
|
| 1233 |
*/
|
| 1234 |
aos_status_t aosShellAddCommand(aos_shell_t *shell, aos_shellcommand_t *cmd) |
| 1235 |
{
|
| 1236 |
aosDbgCheck(shell != NULL);
|
| 1237 |
aosDbgCheck(cmd != NULL);
|
| 1238 |
aosDbgCheck(cmd->name != NULL && strlen(cmd->name) > 0 && strchr(cmd->name, ' ') == NULL && strchr(cmd->name, '\t') == NULL); |
| 1239 |
aosDbgCheck(cmd->callback != NULL);
|
| 1240 |
aosDbgCheck(cmd->next == NULL);
|
| 1241 |
|
| 1242 |
aos_shellcommand_t* prev = NULL;
|
| 1243 |
aos_shellcommand_t** curr = &(shell->commands); |
| 1244 |
|
| 1245 |
// insert the command to the list wrt lexographical order (exception: lower case characters preceed upper their uppercase counterparts)
|
| 1246 |
while (*curr != NULL) { |
| 1247 |
// iterate through the list as long as the command names are 'smaller'
|
| 1248 |
const int cmp = _strccmp((*curr)->name, cmd->name, true, NULL, NULL); |
| 1249 |
if (cmp < 0) { |
| 1250 |
prev = *curr; |
| 1251 |
curr = &((*curr)->next); |
| 1252 |
continue;
|
| 1253 |
} |
| 1254 |
// error if the command already exists
|
| 1255 |
else if (cmp == 0) { |
| 1256 |
return AOS_ERROR;
|
| 1257 |
} |
| 1258 |
// insert the command as soon as a 'larger' name was found
|
| 1259 |
else /* if (cmpval > 0) */ { |
| 1260 |
cmd->next = *curr; |
| 1261 |
// special case: the first command is larger
|
| 1262 |
if (prev == NULL) { |
| 1263 |
shell->commands = cmd; |
| 1264 |
} else {
|
| 1265 |
prev->next = cmd; |
| 1266 |
} |
| 1267 |
return AOS_SUCCESS;
|
| 1268 |
} |
| 1269 |
} |
| 1270 |
// the end of the list has been reached
|
| 1271 |
|
| 1272 |
// append the command
|
| 1273 |
*curr = cmd; |
| 1274 |
return AOS_SUCCESS;
|
| 1275 |
} |
| 1276 |
|
| 1277 |
/**
|
| 1278 |
* @brief Removes a command from the shells list of commands.
|
| 1279 |
*
|
| 1280 |
* @param[in] shell Pointer to the shell object.
|
| 1281 |
* @param[in] cmd Name of the command to removde.
|
| 1282 |
* @param[out] removed Optional pointer to the command that was removed.
|
| 1283 |
*
|
| 1284 |
* @return A status value.
|
| 1285 |
* @retval AOS_SUCCESS The command was removed successfully.
|
| 1286 |
* @retval AOS_ERROR The command name was not found.
|
| 1287 |
*/
|
| 1288 |
aos_status_t aosShellRemoveCommand(aos_shell_t *shell, char *cmd, aos_shellcommand_t **removed)
|
| 1289 |
{
|
| 1290 |
aosDbgCheck(shell != NULL);
|
| 1291 |
aosDbgCheck(cmd != NULL && strlen(cmd) > 0); |
| 1292 |
|
| 1293 |
aos_shellcommand_t* prev = NULL;
|
| 1294 |
aos_shellcommand_t** curr = &(shell->commands); |
| 1295 |
|
| 1296 |
// iterate through the list and seach for the specified command name
|
| 1297 |
while (curr != NULL) { |
| 1298 |
const int cmpval = strcmp((*curr)->name, cmd); |
| 1299 |
// iterate through the list as long as the command names are 'smaller'
|
| 1300 |
if (cmpval < 0) { |
| 1301 |
prev = *curr; |
| 1302 |
curr = &((*curr)->next); |
| 1303 |
continue;
|
| 1304 |
} |
| 1305 |
// remove the command when found
|
| 1306 |
else if (cmpval == 0) { |
| 1307 |
// special case: the first command matches
|
| 1308 |
if (prev == NULL) { |
| 1309 |
shell->commands = (*curr)->next; |
| 1310 |
} else {
|
| 1311 |
prev->next = (*curr)->next; |
| 1312 |
} |
| 1313 |
(*curr)->next = NULL;
|
| 1314 |
// set the optional output argument
|
| 1315 |
if (removed != NULL) { |
| 1316 |
*removed = *curr; |
| 1317 |
} |
| 1318 |
return AOS_SUCCESS;
|
| 1319 |
} |
| 1320 |
// break the loop if the command names are 'larger'
|
| 1321 |
else /* if (cmpval > 0) */ { |
| 1322 |
break;
|
| 1323 |
} |
| 1324 |
} |
| 1325 |
|
| 1326 |
// if the command was not found, return an error
|
| 1327 |
return AOS_ERROR;
|
| 1328 |
} |
| 1329 |
|
| 1330 |
/**
|
| 1331 |
* @brief Count the number of commands assigned to the shell.
|
| 1332 |
*
|
| 1333 |
* @param[in] shell The shell to count the commands for.
|
| 1334 |
*
|
| 1335 |
* @return The number of commands associated to the shell.
|
| 1336 |
*/
|
| 1337 |
unsigned int aosShellCountCommands(aos_shell_t* shell) |
| 1338 |
{
|
| 1339 |
aosDbgCheck(shell != NULL);
|
| 1340 |
|
| 1341 |
unsigned int count = 0; |
| 1342 |
aos_shellcommand_t* cmd = shell->commands; |
| 1343 |
while (cmd != NULL) { |
| 1344 |
++count; |
| 1345 |
cmd = cmd->next; |
| 1346 |
} |
| 1347 |
|
| 1348 |
return count;
|
| 1349 |
} |
| 1350 |
|
| 1351 |
/**
|
| 1352 |
* @brief Add a channel to a AosShellStream.
|
| 1353 |
*
|
| 1354 |
* @param[in] stream The AosShellStream to extend.
|
| 1355 |
* @param[in] channel The channel to be added to the stream.
|
| 1356 |
*/
|
| 1357 |
void aosShellStreamAddChannel(AosShellStream* stream, AosShellChannel* channel)
|
| 1358 |
{
|
| 1359 |
aosDbgCheck(stream != NULL);
|
| 1360 |
aosDbgCheck(channel != NULL && channel->asyncchannel != NULL && channel->next == NULL && (channel->flags & AOS_SHELLCHANNEL_ATTACHED) == 0); |
| 1361 |
|
| 1362 |
// prepend the new channel
|
| 1363 |
chSysLock(); |
| 1364 |
channel->flags |= AOS_SHELLCHANNEL_ATTACHED; |
| 1365 |
channel->next = stream->channel; |
| 1366 |
stream->channel = channel; |
| 1367 |
chSysUnlock(); |
| 1368 |
|
| 1369 |
return;
|
| 1370 |
} |
| 1371 |
|
| 1372 |
/**
|
| 1373 |
* @brief Remove a channel from an AosShellStream.
|
| 1374 |
*
|
| 1375 |
* @param[in] stream The AosShellStream to modify.
|
| 1376 |
* @param[in] channel The channel to remove.
|
| 1377 |
*
|
| 1378 |
* @return A status value.
|
| 1379 |
* @retval AOS_SUCCESS The channel was removed successfully.
|
| 1380 |
* @retval AOS_ERROR The specified channel was not found to be associated with the shell.
|
| 1381 |
*/
|
| 1382 |
aos_status_t aosShellStreamRemoveChannel(AosShellStream* stream, AosShellChannel* channel) |
| 1383 |
{
|
| 1384 |
aosDbgCheck(stream != NULL);
|
| 1385 |
aosDbgCheck(channel != NULL && channel->asyncchannel != NULL && channel->flags & AOS_SHELLCHANNEL_ATTACHED); |
| 1386 |
|
| 1387 |
// local varibales
|
| 1388 |
AosShellChannel* prev = NULL;
|
| 1389 |
AosShellChannel* curr = stream->channel; |
| 1390 |
|
| 1391 |
// iterate through the list and search for the specified channel
|
| 1392 |
while (curr != NULL) { |
| 1393 |
// if the channel was found
|
| 1394 |
if (curr == channel) {
|
| 1395 |
chSysLock(); |
| 1396 |
// special case: the first channel matches (prev is NULL)
|
| 1397 |
if (prev == NULL) { |
| 1398 |
stream->channel = curr->next; |
| 1399 |
} else {
|
| 1400 |
prev->next = channel->next; |
| 1401 |
} |
| 1402 |
curr->next = NULL;
|
| 1403 |
curr->flags &= ~AOS_SHELLCHANNEL_ATTACHED; |
| 1404 |
chSysUnlock(); |
| 1405 |
return AOS_SUCCESS;
|
| 1406 |
} |
| 1407 |
} |
| 1408 |
|
| 1409 |
// if the channel was not found, return an error
|
| 1410 |
return AOS_ERROR;
|
| 1411 |
} |
| 1412 |
|
| 1413 |
/**
|
| 1414 |
* @brief Enable a AosSheööChannel as input.
|
| 1415 |
*
|
| 1416 |
* @param[in] channel The channel to enable as input.
|
| 1417 |
*/
|
| 1418 |
void aosShellChannelInputEnable(AosShellChannel* channel)
|
| 1419 |
{
|
| 1420 |
aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
| 1421 |
|
| 1422 |
chSysLock(); |
| 1423 |
channel->listener.wflags |= CHN_INPUT_AVAILABLE; |
| 1424 |
channel->flags |= AOS_SHELLCHANNEL_INPUT_ENABLED; |
| 1425 |
chSysUnlock(); |
| 1426 |
|
| 1427 |
return;
|
| 1428 |
} |
| 1429 |
|
| 1430 |
/**
|
| 1431 |
* @brief Disable a AosSheööChannel as input.
|
| 1432 |
*
|
| 1433 |
* @param[in] channel The channel to disable as input.
|
| 1434 |
*/
|
| 1435 |
void aosShellChannelInputDisable( AosShellChannel* channel)
|
| 1436 |
{
|
| 1437 |
aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
| 1438 |
|
| 1439 |
chSysLock(); |
| 1440 |
channel->listener.wflags &= ~CHN_INPUT_AVAILABLE; |
| 1441 |
channel->flags &= ~AOS_SHELLCHANNEL_INPUT_ENABLED; |
| 1442 |
chSysUnlock(); |
| 1443 |
|
| 1444 |
return;
|
| 1445 |
} |
| 1446 |
|
| 1447 |
/**
|
| 1448 |
* @brief Enable a AosSheööChannel as output.
|
| 1449 |
*
|
| 1450 |
* @param[in] channel The channel to enable as output.
|
| 1451 |
*/
|
| 1452 |
void aosShellChannelOutputEnable(AosShellChannel* channel)
|
| 1453 |
{
|
| 1454 |
aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
| 1455 |
|
| 1456 |
channel->flags |= AOS_SHELLCHANNEL_OUTPUT_ENABLED; |
| 1457 |
|
| 1458 |
return;
|
| 1459 |
} |
| 1460 |
|
| 1461 |
/**
|
| 1462 |
* @brief Disable a AosSheööChannel as output.
|
| 1463 |
*
|
| 1464 |
* @param[in] channel The channel to disable as output.
|
| 1465 |
*/
|
| 1466 |
void aosShellChannelOutputDisable(AosShellChannel* channel)
|
| 1467 |
{
|
| 1468 |
aosDbgCheck(channel != NULL && channel->asyncchannel != NULL); |
| 1469 |
|
| 1470 |
channel->flags &= ~AOS_SHELLCHANNEL_OUTPUT_ENABLED; |
| 1471 |
|
| 1472 |
return;
|
| 1473 |
} |
| 1474 |
|
| 1475 |
/**
|
| 1476 |
* @brief Thread main function.
|
| 1477 |
*
|
| 1478 |
* @param[in] aosShellThread Name of the function;
|
| 1479 |
* @param[in] shell Pointer to the shell object.
|
| 1480 |
*/
|
| 1481 |
void aosShellThread(void* shell) |
| 1482 |
{
|
| 1483 |
aosDbgCheck(shell != NULL);
|
| 1484 |
|
| 1485 |
// local variables
|
| 1486 |
eventmask_t eventmask; |
| 1487 |
eventflags_t eventflags; |
| 1488 |
AosShellChannel* channel; |
| 1489 |
aos_status_t readeval; |
| 1490 |
size_t nchars = 0;
|
| 1491 |
size_t nargs = 0;
|
| 1492 |
aos_shellcommand_t* cmd; |
| 1493 |
|
| 1494 |
|
| 1495 |
// register OS related events
|
| 1496 |
chEvtRegisterMask(((aos_shell_t*)shell)->os.eventSource, &(((aos_shell_t*)shell)->os.eventListener), AOS_SHELL_EVENTMASK_OS); |
| 1497 |
// register events to all input channels
|
| 1498 |
for (channel = ((aos_shell_t*)shell)->stream.channel; channel != NULL; channel = channel->next) { |
| 1499 |
chEvtRegisterMaskWithFlags(&(channel->asyncchannel->event), &(channel->listener), AOS_SHELL_EVENTMASK_INPUT, channel->listener.wflags); |
| 1500 |
} |
| 1501 |
|
| 1502 |
// fire start event
|
| 1503 |
chEvtBroadcastFlags(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_START); |
| 1504 |
|
| 1505 |
// print the prompt for the first time
|
| 1506 |
_printPrompt((aos_shell_t*)shell); |
| 1507 |
|
| 1508 |
// enter thread loop
|
| 1509 |
while (!chThdShouldTerminateX()) {
|
| 1510 |
// wait for event and handle it accordingly
|
| 1511 |
eventmask = chEvtWaitOne(ALL_EVENTS); |
| 1512 |
|
| 1513 |
// handle event
|
| 1514 |
switch (eventmask) {
|
| 1515 |
|
| 1516 |
// OS related events
|
| 1517 |
case AOS_SHELL_EVENTMASK_OS:
|
| 1518 |
{
|
| 1519 |
eventflags = chEvtGetAndClearFlags(&((aos_shell_t*)shell)->os.eventListener); |
| 1520 |
// handle shutdown/restart events
|
| 1521 |
if (eventflags & AOS_SYSTEM_EVENTFLAGS_SHUTDOWN) {
|
| 1522 |
chThdTerminate(((aos_shell_t*)shell)->thread); |
| 1523 |
} else {
|
| 1524 |
// print an error message
|
| 1525 |
chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "\nERROR: unknown OS event received (0x%08X)\n", eventflags);
|
| 1526 |
} |
| 1527 |
break;
|
| 1528 |
} |
| 1529 |
|
| 1530 |
// input events
|
| 1531 |
case AOS_SHELL_EVENTMASK_INPUT:
|
| 1532 |
{
|
| 1533 |
// check and handle all channels
|
| 1534 |
channel = ((aos_shell_t*)shell)->stream.channel; |
| 1535 |
while (channel != NULL) { |
| 1536 |
eventflags = chEvtGetAndClearFlags(&channel->listener); |
| 1537 |
// if there is new input
|
| 1538 |
if (eventflags & CHN_INPUT_AVAILABLE) {
|
| 1539 |
// read input from channel
|
| 1540 |
readeval = _readChannel((aos_shell_t*)shell, channel, &nchars); |
| 1541 |
// parse input line to argument list only if the input shall be executed
|
| 1542 |
nargs = (readeval == AOS_SUCCESS && nchars > 0) ? _parseArguments((aos_shell_t*)shell) : 0; |
| 1543 |
// check number of arguments
|
| 1544 |
if (nargs > ((aos_shell_t*)shell)->arglistsize) {
|
| 1545 |
// error too many arguments
|
| 1546 |
chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "\ttoo many arguments\n");
|
| 1547 |
} else if (nargs > 0) { |
| 1548 |
// search command list for arg[0] and execute callback
|
| 1549 |
cmd = ((aos_shell_t*)shell)->commands; |
| 1550 |
while (cmd != NULL) { |
| 1551 |
if (strcmp(((aos_shell_t*)shell)->arglist[0], cmd->name) == 0) { |
| 1552 |
((aos_shell_t*)shell)->execstatus.command = cmd; |
| 1553 |
chEvtBroadcastFlags(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_EXEC); |
| 1554 |
((aos_shell_t*)shell)->execstatus.retval = cmd->callback((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, nargs, ((aos_shell_t*)shell)->arglist); |
| 1555 |
chEvtBroadcastFlags(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_DONE); |
| 1556 |
// notify if the command was not successful
|
| 1557 |
if (((aos_shell_t*)shell)->execstatus.retval != 0) { |
| 1558 |
chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "command returned exit status %d\n", ((aos_shell_t*)shell)->execstatus.retval);
|
| 1559 |
} |
| 1560 |
break;
|
| 1561 |
} |
| 1562 |
cmd = cmd->next; |
| 1563 |
} /* end of while */
|
| 1564 |
|
| 1565 |
// if no matching command was found, print an error
|
| 1566 |
if (cmd == NULL) { |
| 1567 |
chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "%s: command not found\n", ((aos_shell_t*)shell)->arglist[0]); |
| 1568 |
} |
| 1569 |
} |
| 1570 |
|
| 1571 |
// reset some internal variables and eprint a new prompt
|
| 1572 |
if (readeval == AOS_SUCCESS && !chThdShouldTerminateX()) {
|
| 1573 |
((aos_shell_t*)shell)->inputdata.cursorpos = 0;
|
| 1574 |
((aos_shell_t*)shell)->inputdata.lineend = 0;
|
| 1575 |
_printPrompt((aos_shell_t*)shell); |
| 1576 |
} |
| 1577 |
} |
| 1578 |
|
| 1579 |
// iterate to next channel
|
| 1580 |
channel = channel->next; |
| 1581 |
} |
| 1582 |
break;
|
| 1583 |
} |
| 1584 |
|
| 1585 |
// other events
|
| 1586 |
default:
|
| 1587 |
{
|
| 1588 |
// print an error message
|
| 1589 |
chprintf((BaseSequentialStream*)&((aos_shell_t*)shell)->stream, "\nSHELL: ERROR: unknown event received (0x%08X)\n", eventmask);
|
| 1590 |
break;
|
| 1591 |
} |
| 1592 |
|
| 1593 |
} /* end of switch */
|
| 1594 |
|
| 1595 |
} /* end of while */
|
| 1596 |
|
| 1597 |
// fire event and exit the thread
|
| 1598 |
chSysLock(); |
| 1599 |
chEvtBroadcastFlagsI(&(((aos_shell_t*)shell)->eventSource), AOS_SHELL_EVTFLAG_EXIT); |
| 1600 |
chThdExitS(MSG_OK); |
| 1601 |
// no chSysUnlock() required since the thread has been terminated an all waiting threads have been woken up
|
| 1602 |
} |
| 1603 |
|
| 1604 |
#endif /* (AMIROOS_CFG_SHELL_ENABLE == true) || (AMIROOS_CFG_TESTS_ENABLE == true)*/ |
| 1605 |
|
| 1606 |
/** @} */
|