/**
* Interface to the application. Adds data to system buffer and try to search
* command line termination. If the termination is found or if len=0, command
* parser is called.
*
* @param context
* @param data - data to process
* @param len - length of data
* @return
*/
int SCPI_Input(scpi_t * context, const char * data, size_t len) {
int result = 0;
const char * cmd_term;
if (len == 0) {
context->buffer.data[context->buffer.position] = 0;
result = SCPI_Parse(context, context->buffer.data, context->buffer.position);
context->buffer.position = 0;
} else {
size_t buffer_free;
int ws;
buffer_free = context->buffer.length - context->buffer.position;
if (len > (buffer_free - 1)) {
return -1;
}
memcpy(&context->buffer.data[context->buffer.position], data, len);
context->buffer.position += len;
context->buffer.data[context->buffer.position] = 0;
ws = skipWhitespace(context->buffer.data, context->buffer.position);
cmd_term = cmdlineTerminator(context->buffer.data + ws, context->buffer.position - ws);
while (cmd_term != NULL) {
int curr_len = cmd_term - context->buffer.data;
result = SCPI_Parse(context, context->buffer.data + ws, curr_len - ws);
memmove(context->buffer.data, cmd_term, context->buffer.position - curr_len);
context->buffer.position -= curr_len;
ws = skipWhitespace(context->buffer.data, context->buffer.position);
cmd_term = cmdlineTerminator(context->buffer.data + ws, context->buffer.position - ws);
}
}
return result;
}
/**
* Interface to the application. Adds data to system buffer and try to search
* command line termination. If the termination is found or if len=0, command
* parser is called.
*
* @param context
* @param data - data to process
* @param len - length of data
* @return
*/
scpi_bool_t SCPI_Input(scpi_t * context, const char * data, int len) {
scpi_bool_t result = TRUE;
size_t totcmdlen = 0;
int cmdlen = 0;
if (len == 0) {
context->buffer.data[context->buffer.position] = 0;
result = SCPI_Parse(context, context->buffer.data, context->buffer.position);
context->buffer.position = 0;
} else {
int buffer_free;
buffer_free = context->buffer.length - context->buffer.position;
if (len > (buffer_free - 1)) {
/* Input buffer overrun - invalidate buffer */
context->buffer.position = 0;
context->buffer.data[context->buffer.position] = 0;
SCPI_ErrorPush(context, SCPI_ERROR_INPUT_BUFFER_OVERRUN);
return FALSE;
}
memcpy(&context->buffer.data[context->buffer.position], data, len);
context->buffer.position += len;
context->buffer.data[context->buffer.position] = 0;
while (1) {
cmdlen = scpiParser_detectProgramMessageUnit(&context->parser_state, context->buffer.data + totcmdlen, context->buffer.position - totcmdlen);
totcmdlen += cmdlen;
if (context->parser_state.termination == SCPI_MESSAGE_TERMINATION_NL) {
result = SCPI_Parse(context, context->buffer.data, totcmdlen);
memmove(context->buffer.data, context->buffer.data + totcmdlen, context->buffer.position - totcmdlen);
context->buffer.position -= totcmdlen;
totcmdlen = 0;
} else {
if (context->parser_state.programHeader.type == SCPI_TOKEN_UNKNOWN) break;
if (totcmdlen >= context->buffer.position) break;
}
}
}
return result;
}
/**
* Interface to the application. Adds data to system buffer and try to search
* command line termination. If the termination is found or if len=0, command
* parser is called.
*
* @param context
* @param data - data to process
* @param len - length of data
* @return
*/
int SCPI_Input(scpi_t * context, const char * data, int len) {
int result = 0;
size_t totcmdlen = 0;
int cmdlen = 0;
if (len == 0) {
context->buffer.data[context->buffer.position] = 0;
result = SCPI_Parse(context, context->buffer.data, context->buffer.position);
context->buffer.position = 0;
} else {
int buffer_free;
buffer_free = context->buffer.length - context->buffer.position;
if (len > (buffer_free - 1)) {
return -1;
}
memcpy(&context->buffer.data[context->buffer.position], data, len);
context->buffer.position += len;
context->buffer.data[context->buffer.position] = 0;
while (1) {
cmdlen = scpiParser_detectProgramMessageUnit(&context->parser_state, context->buffer.data + totcmdlen, context->buffer.position - totcmdlen);
totcmdlen += cmdlen;
if (context->parser_state.termination == SCPI_MESSAGE_TERMINATION_NL) {
result = SCPI_Parse(context, context->buffer.data, totcmdlen);
memmove(context->buffer.data, context->buffer.data + totcmdlen, context->buffer.position - totcmdlen);
context->buffer.position -= totcmdlen;
totcmdlen = 0;
} else {
if (context->parser_state.programHeader.type == SCPI_TOKEN_UNKNOWN) break;
if (totcmdlen >= context->buffer.position) break;
}
}
}
return result;
}
