//This method should be called from the main sketch in loop();
void AsiMS2000::checkSerial()
{
int inByte = 0;
static int bufferPos = 0;
static char commandBuffer [BUFFERSIZE];
if(Serial1.available() > 0)
{
inByte = Serial1.read();
if(bufferPos > BUFFERSIZE)
{
bufferPos = 0;
bufferOverunError(commandBuffer);
return;
}
//check for <CR> or | since arduino env can't send CR.
if(inByte == 13 || inByte == 124)
{
commandBuffer[bufferPos] = '\0';
inputPrintln(commandBuffer);
interpretCommand(commandBuffer);
bufferPos =0;
}
else if(inByte == 10 || inByte == 27)//backspace or escape
{
clearCommandBuffer(commandBuffer);
bufferPos = 0;
}
else if(inByte > 31)//ignore control characters
{
commandBuffer[bufferPos++] = inByte;
}
}
}
/**
* @brief bossTask
* @param argument
*/
void StartBossTask(void const * argument) {
// Start receiving data via USB UART
cHAL_UART_TermReceive_IT(&huart1, 512);
cHAL_UART_TermReceive_IT(&huart2, 512);
msg_genericMessage_t rxMessage;
// If in AUTO mode, set off a WIFI startup
// if (globalFlags.states.commState == COMM_STATE_AUTO) {
// sendCommand(msgQBoss, MSG_SRC_BOSS_TASK, MSG_CMD_WIFI_INIT,
// osWaitForever);
// }
/* Infinite loop */
for (;;) {
fetchMessage(msgQBoss, &rxMessage, 0);
switch (rxMessage.messageType) {
case MSG_TYPE_NO_MESSAGE:
break;
case MSG_TYPE_COMMAND:
interpretCommand(decodeCommand(&rxMessage));
break;
default:
break;
}
}
}
void commandInputCall()
{
char *command;
command = XmTextGetString(commandInput);
interpretCommand(command);
XmTextSetString(commandInput,"");
XtFree(command);
}
void pConsole::executeCommand( const QString& command, bool writeCommand, bool showPrompt )
{
const QStringList clearCommands = QStringList( "clear" ) << "cls";
if ( clearCommands.contains( command, Qt::CaseInsensitive ) )
{
clear();
if ( showPrompt )
{
displayPrompt();
}
return;
}
// write command to execute
if ( writeCommand )
{
if ( !currentCommand().isEmpty() )
{
displayPrompt();
}
insertPlainText( command );
}
// execute command
int res;
QString strRes = interpretCommand( command, &res );
// write output in different colors if needed
if ( res == 0 )
{
useColor( ctOutput );
}
else
{
useColor( ctError );
}
if ( !strRes.isEmpty() )
{
appendPlainText( strRes );
}
useColor( ctCommand );
// display the prompt again if needed
if ( showPrompt )
{
displayPrompt();
}
}
/********************************************************************************
* Function name : struct command_s *interpretCommand(char *commandLine)
* returns : pointer to a command_s structure containing all command
* data, ready to be passed to executeCommand()
* commandLine : command line input to tokenise and return in command
* structure
*
* Created by : James Johns
* Date created : 10/12/2011
* Description : tokenises commandLine by whitespace. first token is command
* utility, followed by arguments
*
* returns tokens in command_s structure which needs
* deallocating when no longer needed.
*
* NOTES : BUG - arguments of created command may have artifacts at the
* end of their string
********************************************************************************/
struct command_s *interpretCommand(char *commandLine) {
struct command_s *toRet = malloc(sizeof(struct command_s));
/* temporary argument storage. ready to copy into a perfect sized array later on */
char *tempStore[MAXARGUMENTCOUNT];
unsigned int startOfToken = 0;
char *redirectedFileName;
if (toRet == NULL) {
perror("interpretCommand");
}
else {
toRet->next = NULL;
toRet->backgroundTask = 0;
toRet->inputFD = toRet->outputFD = -1;
toRet->argc = 0;
toRet->argv = malloc(sizeof(char *)*2);
if (toRet->argv == NULL) {
perror("interpretCommand: malloc");
free(toRet);
return NULL;
}
int i = 0;
/* ignore leading whitespace */
while ((i < strlen(commandLine)) && ((commandLine[i] == ' ') || (commandLine[i] == '\n')))
i++;
if (i >= strlen(commandLine)) {
/* no command to parse, so ignore it and return NULL */
fprintf(stderr, "Empty command detected\n");
free(toRet);
toRet = NULL;
return NULL;
}
startOfToken = i;
/* could characters in command name, ready to allocate required space. */
for (; i < strlen(commandLine) && commandLine[i] != ' ' &&
commandLine[i] != '\n'; i++); /* count through characters until we reach the end
* of the string or a tokenising character */
toRet->argv[0] = malloc(sizeof(char)*((i-startOfToken)+1));
toRet->argc++;
strncpy(toRet->argv[0], &commandLine[startOfToken], i-(startOfToken)); /* startOfToken is an index. add one for calculating length properly */
toRet->argv[0][i-startOfToken] = NULL;
toRet->argv[1] = NULL; /* make sure even for single commands, argv[] ends in a NULL pointer */
i++;
startOfToken = i;
/* loop until we reach the end of the string or we hit a new line character
* tokenising the string at each space character */
while (i <= strlen(commandLine)) {
switch (commandLine[i]) {
case ' ':
case '\n':
case '\0':
/* if 2 separators are found next to eachother, ignore the first separator and
* use the second as the startOfToken point. */
if (i == startOfToken) {
i++;
startOfToken = i;
break;
}
/* create a token from string */
tempStore[toRet->argc] = malloc(sizeof(char)*(i-startOfToken)+1);
strncpy(tempStore[toRet->argc],commandLine+startOfToken,i-startOfToken);
tempStore[toRet->argc][i-startOfToken] = '\0';
toRet->argc++;
/* set records to beginning of the next possible token */
startOfToken = i;
break;
case '|':
toRet->next = interpretCommand(commandLine+i+1);
i = strlen(commandLine);
break;
case '&':
/* send child process to background */
toRet->backgroundTask = 1;
i++;
break;
case '>':
/* next argument is the file to redirect into. */;
i++;
while (commandLine[i] == ' ' || commandLine[i] == '\t')
i++;
startOfToken = i;
for (; i < strlen(commandLine) && commandLine != '\0' && commandLine[i] != '\n' && commandLine[i] != ' '; i++);
if (i != startOfToken) {
int filenameLength = (i-startOfToken);
redirectedFileName = malloc(sizeof(char)*filenameLength);
strncpy(redirectedFileName, commandLine, filenameLength);
redirectedFileName[filenameLength] = '\0';
FILE *outputFile = fopen(redirectedFileName, "w");
if (outputFile == NULL) {
perror("fopen");
}
else
{
toRet->outputFD = fileno(outputFile);
}
}
break;
default:
i++;
break;
}
}
/* copy arguments into command structure */
if (toRet->argc > 1) {
toRet->argv = realloc(toRet->argv, sizeof(char *)*(toRet->argc+1));
/* loop through tempStore, copying all strings across to argv */
for (int j = 1; j < toRet->argc; j++) {
toRet->argv[j] = tempStore[j];
}
toRet->argv[toRet->argc] = NULL;
}
/* check I/O file descriptors and assign pipes as necessary */
if (toRet->outputFD == -1 && toRet->next != NULL) {
/* create a pipe, assign to outputFD and next->outputFD */
int newpipe[2];
if (pipe(newpipe) == -1) {
perror("interpretCommand: pipe");
destroyCommand(toRet);
return NULL;
}
toRet->outputFD = newpipe[1];
toRet->next->inputFD = newpipe[0];
}
else if (toRet->outputFD == -1 && toRet->next == NULL) {
/* end of command list, output must be to stdout unless being rediected already. */
toRet->outputFD = fileno(stdout);
}
if (toRet->inputFD == -1) {
/* if input has not been assigned yet, assign standard input to inputFD */
toRet->inputFD = fileno(stdin);
}
}
return toRet;
}