| | |
| | | #include "lexer_private.h" |
| | | #include "scpi/error.h" |
| | | #include "scpi/constants.h" |
| | | #include "scpi/utils.h" |
| | | |
| | | /** |
| | | * Write data to SCPI output |
| | |
| | | */ |
| | | static size_t writeDelimiter(scpi_t * context) { |
| | | if (context->output_count > 0) { |
| | | return writeData(context, ",", 2); |
| | | return writeData(context, ",", 1); |
| | | } else { |
| | | return 0; |
| | | } |
| | |
| | | static size_t writeNewLine(scpi_t * context) { |
| | | if (context->output_count > 0) { |
| | | size_t len; |
| | | len = writeData(context, "\r\n", 2); |
| | | #ifndef SCPI_LINE_ENDING |
| | | #error no termination character defined |
| | | #endif |
| | | len = writeData(context, SCPI_LINE_ENDING, strlen(SCPI_LINE_ENDING)); |
| | | flushData(context); |
| | | return len; |
| | | } else { |
| | | return 0; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * Conditionaly write ";" |
| | | * @param context |
| | | * @return number of characters written |
| | | */ |
| | | static size_t writeSemicolon(scpi_t * context) { |
| | | if (context->output_count > 0) { |
| | | return writeData(context, ";", 1); |
| | | } else { |
| | | return 0; |
| | | } |
| | |
| | | const scpi_command_t * cmd = context->param_list.cmd; |
| | | lex_state_t * state = &context->param_list.lex_state; |
| | | |
| | | /* conditionaly write ; */ |
| | | writeSemicolon(context); |
| | | |
| | | context->cmd_error = FALSE; |
| | | context->output_count = 0; |
| | | context->input_count = 0; |
| | | |
| | | SCPI_DEBUG_COMMAND(context); |
| | | /* if callback exists - call command callback */ |
| | | if (cmd->callback != NULL) { |
| | | if ((cmd->callback(context) != SCPI_RES_OK) && !context->cmd_error) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_EXECUTION_ERROR); |
| | | } |
| | | } |
| | | |
| | | /* conditionaly write new line */ |
| | | writeNewLine(context); |
| | | |
| | | /* set error if command callback did not read all parameters */ |
| | | if (state->pos < (state->buffer + state->len) && !context->cmd_error) { |
| | |
| | | |
| | | for (i = 0; context->cmdlist[i].pattern != NULL; i++) { |
| | | cmd = &context->cmdlist[i]; |
| | | if (matchCommand(cmd->pattern, header, len)) { |
| | | if (matchCommand(cmd->pattern, header, len, NULL, 0)) { |
| | | context->param_list.cmd = cmd; |
| | | return TRUE; |
| | | } |
| | |
| | | * @param len - command line length |
| | | * @return 1 if the last evaluated command was found |
| | | */ |
| | | int SCPI_Parse(scpi_t * context, const char * data, int len) { |
| | | int SCPI_Parse(scpi_t * context, char * data, int len) { |
| | | int result = 0; |
| | | scpi_parser_state_t * state; |
| | | int r; |
| | | scpi_token_t cmd_prev = {SCPI_TOKEN_UNKNOWN, NULL, 0}; |
| | | |
| | | if (context == NULL) { |
| | | return -1; |
| | | } |
| | | |
| | | state = &context->parser_state; |
| | | context->output_count = 0; |
| | | |
| | | while (1) { |
| | | result = 0; |
| | |
| | | if (state->programHeader.type == SCPI_TOKEN_INVALID) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_INVALID_CHARACTER); |
| | | } else if (state->programHeader.len > 0) { |
| | | |
| | | composeCompoundCommand(&cmd_prev, &state->programHeader); |
| | | |
| | | if (findCommandHeader(context, state->programHeader.ptr, state->programHeader.len)) { |
| | | |
| | | context->param_list.lex_state.buffer = state->programData.ptr; |
| | |
| | | processCommand(context); |
| | | |
| | | result = 1; |
| | | cmd_prev = state->programHeader; |
| | | } else { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_UNDEFINED_HEADER); |
| | | } |
| | |
| | | } |
| | | |
| | | } |
| | | |
| | | /* conditionaly write new line */ |
| | | writeNewLine(context); |
| | | |
| | | return result; |
| | | } |
| | | |
| | |
| | | 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) break; |
| | | if (context->parser_state.programHeader.type == SCPI_TOKEN_UNKNOWN) break; |
| | | if (totcmdlen >= context->buffer.position) break; |
| | | } |
| | | |
| | | 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; |
| | | 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 prefix of nondecimal base |
| | | * @param base |
| | | * @return |
| | | * @return |
| | | */ |
| | | static const char * getBasePrefix(int8_t base) { |
| | | switch (base) { |
| | |
| | | * @param context |
| | | * @param val |
| | | * @param base |
| | | * @return |
| | | * @return |
| | | */ |
| | | size_t SCPI_ResultIntBase(scpi_t * context, int32_t val, int8_t base) { |
| | | char buffer[33]; |
| | |
| | | size_t result = 0; |
| | | size_t len; |
| | | |
| | | len = longToStr(val, buffer, sizeof (buffer), base); |
| | | len = SCPI_LongToStr(val, buffer, sizeof (buffer), base); |
| | | basePrefix = getBasePrefix(base); |
| | | |
| | | result += writeDelimiter(context); |
| | |
| | | size_t SCPI_ResultDouble(scpi_t * context, double val) { |
| | | char buffer[32]; |
| | | size_t result = 0; |
| | | size_t len = doubleToStr(val, buffer, sizeof (buffer)); |
| | | size_t len = SCPI_DoubleToStr(val, buffer, sizeof (buffer)); |
| | | result += writeDelimiter(context); |
| | | result += writeData(context, buffer, len); |
| | | context->output_count++; |
| | |
| | | } |
| | | |
| | | /** |
| | | * Write arbitrary block program data to the result |
| | | * @param context |
| | | * @param data |
| | | * @param len |
| | | * @return |
| | | */ |
| | | size_t SCPI_ResultArbitraryBlock(scpi_t * context, const char * data, size_t len) { |
| | | size_t result = 0; |
| | | char block_header[12]; |
| | | size_t header_len; |
| | | block_header[0] = '#'; |
| | | SCPI_LongToStr(len, block_header + 2, 10, 10); |
| | | |
| | | header_len = strlen(block_header + 2); |
| | | block_header[1] = (char)(header_len + '0'); |
| | | |
| | | result += writeData(context, block_header, header_len + 2); |
| | | result += writeData(context, data, len); |
| | | |
| | | context->output_count++; |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * Write boolean value to the result |
| | | * @param context |
| | | * @param val |
| | |
| | | return SCPI_ResultIntBase(context, val ? 1 : 0, 10); |
| | | } |
| | | |
| | | |
| | | /* parsing parameters */ |
| | | |
| | | /** |
| | | * Invalidate token |
| | | * @param token |
| | | * @param ptr |
| | | */ |
| | | static void invalidateToken(scpi_token_t * token, char * ptr) { |
| | | token->len = 0; |
| | | token->ptr = ptr; |
| | | token->type = SCPI_TOKEN_UNKNOWN; |
| | | } |
| | | |
| | | /** |
| | | * Get one parameter from command line |
| | | * @param context |
| | | * @param parameter |
| | | * @param mandatory |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_Parameter(scpi_t * context, scpi_parameter_t * parameter, scpi_bool_t mandatory) { |
| | | scpi_token_t token; |
| | | lex_state_t * state; |
| | | int32_t value; |
| | | |
| | | parameter->data.ptr = NULL; |
| | | parameter->data.len = 0; |
| | | parameter->number.value = 0; |
| | | parameter->number.base = 10; |
| | | parameter->number.unit = SCPI_UNIT_NONE; |
| | | parameter->number.type = SCPI_NUM_NUMBER; |
| | | parameter->type = SCPI_TOKEN_UNKNOWN; |
| | | if (!parameter) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | invalidateToken(parameter, NULL); |
| | | |
| | | state = &context->param_list.lex_state; |
| | | |
| | |
| | | if (mandatory) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_MISSING_PARAMETER); |
| | | } else { |
| | | parameter->number.type = SCPI_NUM_DEF; |
| | | parameter->type = SCPI_TOKEN_PROGRAM_MNEMONIC; // TODO: select something different |
| | | } |
| | | return FALSE; |
| | | } |
| | | if (context->input_count != 0) { |
| | | scpiLex_Comma(state, &token); |
| | | if (token.type != SCPI_TOKEN_COMMA) { |
| | | scpiLex_Comma(state, parameter); |
| | | if (parameter->type != SCPI_TOKEN_COMMA) { |
| | | invalidateToken(parameter, NULL); |
| | | SCPI_ErrorPush(context, SCPI_ERROR_INVALID_SEPARATOR); |
| | | return FALSE; |
| | | } |
| | |
| | | |
| | | context->input_count++; |
| | | |
| | | scpiParser_parseProgramData(&context->param_list.lex_state, &token); |
| | | scpiParser_parseProgramData(&context->param_list.lex_state, parameter); |
| | | |
| | | parameter->type = token.type; |
| | | parameter->data.ptr = token.ptr; |
| | | parameter->data.len = token.len; |
| | | |
| | | switch (token.type) { |
| | | switch (parameter->type) { |
| | | case SCPI_TOKEN_HEXNUM: |
| | | parameter->number.base = 16; |
| | | strToLong(token.ptr, &value, 16); |
| | | parameter->number.value = value; |
| | | return TRUE; |
| | | case SCPI_TOKEN_OCTNUM: |
| | | parameter->number.base = 8; |
| | | strToLong(token.ptr, &value, 8); |
| | | parameter->number.value = value; |
| | | return TRUE; |
| | | case SCPI_TOKEN_BINNUM: |
| | | parameter->number.base = 2; |
| | | strToLong(token.ptr, &value, 2); |
| | | parameter->number.value = value; |
| | | return TRUE; |
| | | case SCPI_TOKEN_PROGRAM_MNEMONIC: |
| | | return TRUE; |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | strToDouble(token.ptr, ¶meter->number.value); |
| | | return TRUE; |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX: |
| | | strToDouble(token.ptr, ¶meter->number.value); |
| | | return TRUE; |
| | | case SCPI_TOKEN_ARBITRARY_BLOCK_PROGRAM_DATA: |
| | | return TRUE; |
| | | case SCPI_TOKEN_SINGLE_QUOTE_PROGRAM_DATA: |
| | | // TODO: replace double "single qoute" |
| | | return TRUE; |
| | | case SCPI_TOKEN_DOUBLE_QUOTE_PROGRAM_DATA: |
| | | // TODO: replace double "double qoute" |
| | | return TRUE; |
| | | case SCPI_TOKEN_PROGRAM_EXPRESSION: |
| | | return TRUE; |
| | | default: |
| | | parameter->type = SCPI_TOKEN_UNKNOWN; |
| | | parameter->data.ptr = NULL; |
| | | parameter->data.len = 0; |
| | | invalidateToken(parameter, NULL); |
| | | SCPI_ErrorPush(context, SCPI_ERROR_INVALID_STRING_DATA); |
| | | return FALSE; |
| | | } |
| | |
| | | * Detect if parameter is number |
| | | * @param parameter |
| | | * @param suffixAllowed |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamIsNumber(scpi_parameter_t * parameter, scpi_bool_t suffixAllowed) { |
| | | switch (parameter->type) { |
| | |
| | | return suffixAllowed; |
| | | default: |
| | | return FALSE; |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * Convert parameter to integer |
| | | * @param context |
| | | * @param parameter |
| | | * @param value result |
| | | * @return TRUE if succesful |
| | | */ |
| | | static scpi_bool_t ParamToInt(scpi_t * context, scpi_parameter_t * parameter, int32_t * value, scpi_bool_t sign) { |
| | | |
| | | if (!value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | switch (parameter->type) { |
| | | case SCPI_TOKEN_HEXNUM: |
| | | return strToULong(parameter->ptr, (uint32_t *)value, 16) > 0 ? TRUE : FALSE; |
| | | case SCPI_TOKEN_OCTNUM: |
| | | return strToULong(parameter->ptr, (uint32_t *)value, 8) > 0 ? TRUE : FALSE; |
| | | case SCPI_TOKEN_BINNUM: |
| | | return strToULong(parameter->ptr, (uint32_t *)value, 2) > 0 ? TRUE : FALSE; |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX: |
| | | if (sign) { |
| | | return strToLong(parameter->ptr, value, 10) > 0 ? TRUE : FALSE; |
| | | } else { |
| | | return strToULong(parameter->ptr, (uint32_t *)value, 10) > 0 ? TRUE : FALSE; |
| | | } |
| | | } |
| | | return FALSE; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Convert parameter to integer |
| | | * @param context |
| | | * @param parameter |
| | | * @param value result |
| | | * @return TRUE if succesful |
| | | */ |
| | | scpi_bool_t SCPI_ParamToInt(scpi_t * context, scpi_parameter_t * parameter, int32_t * value) { |
| | | return ParamToInt(context, parameter, value, TRUE); |
| | | } |
| | | |
| | | /** |
| | | * Convert parameter to unsigned integer |
| | | * @param context |
| | | * @param parameter |
| | | * @param value result |
| | | * @return TRUE if succesful |
| | | */ |
| | | scpi_bool_t SCPI_ParamToUnsignedInt(scpi_t * context, scpi_parameter_t * parameter, uint32_t * value) { |
| | | return ParamToInt(context, parameter, (int32_t *)value, FALSE); |
| | | } |
| | | |
| | | /** |
| | | * Convert parameter to double |
| | | * @param context |
| | | * @param parameter |
| | | * @param value result |
| | | * @return TRUE if succesful |
| | | */ |
| | | #include "stdio.h" |
| | | scpi_bool_t SCPI_ParamToDouble(scpi_t * context, scpi_parameter_t * parameter, double * value) { |
| | | scpi_bool_t result = FALSE; |
| | | uint32_t valint; |
| | | |
| | | if (!value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | switch (parameter->type) { |
| | | case SCPI_TOKEN_HEXNUM: |
| | | case SCPI_TOKEN_OCTNUM: |
| | | case SCPI_TOKEN_BINNUM: |
| | | result = SCPI_ParamToUnsignedInt(context, parameter, &valint); |
| | | *value = valint; |
| | | break; |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX: |
| | | result = strToDouble(parameter->ptr, value) > 0 ? TRUE : FALSE; |
| | | break; |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | |
| | | * @param context |
| | | * @param value |
| | | * @param mandatory |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamDouble(scpi_t * context, double * value, scpi_bool_t mandatory) |
| | | { |
| | | scpi_bool_t SCPI_ParamDouble(scpi_t * context, double * value, scpi_bool_t mandatory) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | |
| | | |
| | | if (!value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | if (result) { |
| | | if (SCPI_ParamIsNumber(¶m, FALSE)) { |
| | | *value = param.number.value; |
| | | SCPI_ParamToDouble(context, ¶m, value); |
| | | } else if (SCPI_ParamIsNumber(¶m, TRUE)) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SUFFIX_NOT_ALLOWED); |
| | | result = FALSE; |
| | |
| | | result = FALSE; |
| | | } |
| | | } |
| | | return result; |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | |
| | | * @param context |
| | | * @param value |
| | | * @param mandatory |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamInt(scpi_t * context, int32_t * value, scpi_bool_t mandatory) |
| | | { |
| | | // TODO: remove dependency on double |
| | | double tmpVal; |
| | | static scpi_bool_t ParamInt(scpi_t * context, int32_t * value, scpi_bool_t mandatory, scpi_bool_t sign) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | |
| | | if (!value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | result = SCPI_ParamDouble(context, &tmpVal, mandatory); |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | if (result) { |
| | | *value = tmpVal; |
| | | if (SCPI_ParamIsNumber(¶m, FALSE)) { |
| | | result = ParamToInt(context, ¶m, value, sign); |
| | | } else if (SCPI_ParamIsNumber(¶m, TRUE)) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SUFFIX_NOT_ALLOWED); |
| | | result = FALSE; |
| | | } else { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_DATA_TYPE_ERROR); |
| | | result = FALSE; |
| | | } |
| | | } |
| | | |
| | | return result; |
| | | } |
| | | |
| | | scpi_bool_t SCPI_ParamInt(scpi_t * context, int32_t * value, scpi_bool_t mandatory) { |
| | | return ParamInt(context, value, mandatory, TRUE); |
| | | } |
| | | |
| | | scpi_bool_t SCPI_ParamUnsignedInt(scpi_t * context, uint32_t * value, scpi_bool_t mandatory) { |
| | | return ParamInt(context, (int32_t *)value, mandatory, FALSE); |
| | | } |
| | | |
| | | /** |
| | |
| | | * @param value |
| | | * @param len |
| | | * @param mandatory |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamCharacters(scpi_t * context, const char ** value, size_t * len, scpi_bool_t mandatory) |
| | | { |
| | | scpi_bool_t SCPI_ParamCharacters(scpi_t * context, const char ** value, size_t * len, scpi_bool_t mandatory) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | |
| | | |
| | | if (!value || !len) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | if (result) { |
| | | *value = param.data.ptr; |
| | | *len = param.data.len; |
| | | if (result) { |
| | | *value = param.ptr; |
| | | *len = param.len; |
| | | |
| | | // TODO: return also parameter type (ProgramMnemonic, ArbitraryBlockProgramData, SingleQuoteProgramData, DoubleQuoteProgramData |
| | | } |
| | | |
| | | |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * Get arbitrary block program data and returns pointer to data |
| | | * @param context |
| | | * @param value result pointer to data |
| | | * @param len result length of data |
| | | * @param mandatory |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamArbitraryBlock(scpi_t * context, const char ** value, size_t * len, scpi_bool_t mandatory) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | |
| | | if (!value || !len) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | if (result) { |
| | | if (param.type == SCPI_TOKEN_ARBITRARY_BLOCK_PROGRAM_DATA) { |
| | | *value = param.ptr; |
| | | *len = param.len; |
| | | } else { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_DATA_TYPE_ERROR); |
| | | result = FALSE; |
| | | } |
| | | } |
| | | |
| | | return result; |
| | | } |
| | | |
| | | scpi_bool_t SCPI_ParamCopyText(scpi_t * context, char * buffer, size_t buffer_len, size_t * copy_len, scpi_bool_t mandatory) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | size_t i_from; |
| | | size_t i_to; |
| | | char quote; |
| | | |
| | | if (!buffer || !copy_len) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | if (result) { |
| | | |
| | | switch (param.type) { |
| | | case SCPI_TOKEN_SINGLE_QUOTE_PROGRAM_DATA: |
| | | case SCPI_TOKEN_DOUBLE_QUOTE_PROGRAM_DATA: |
| | | quote = param.type == SCPI_TOKEN_SINGLE_QUOTE_PROGRAM_DATA ? '\'' : '"'; |
| | | for (i_from = 0, i_to = 0; i_from < (size_t) param.len; i_from++) { |
| | | if (i_from >= buffer_len) { |
| | | break; |
| | | } |
| | | buffer[i_to] = param.ptr[i_from]; |
| | | i_to++; |
| | | if (param.ptr[i_from] == quote) { |
| | | i_from++; |
| | | } |
| | | } |
| | | *copy_len = i_to; |
| | | if (i_to < buffer_len) { |
| | | buffer[i_to] = 0; |
| | | } |
| | | break; |
| | | default: |
| | | SCPI_ErrorPush(context, SCPI_ERROR_DATA_TYPE_ERROR); |
| | | result = FALSE; |
| | | } |
| | | } |
| | | |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * Convert parameter to choice |
| | | * @param context |
| | | * @param parameter - should be PROGRAM_MNEMONIC |
| | | * @param options - NULL terminated list of choices |
| | | * @param value - index to options |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamToChoice(scpi_t * context, scpi_parameter_t * parameter, const scpi_choice_def_t * options, int32_t * value) { |
| | | size_t res; |
| | | scpi_bool_t result = FALSE; |
| | | |
| | | if (!options || !value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | if (parameter->type == SCPI_TOKEN_PROGRAM_MNEMONIC) { |
| | | for (res = 0; options[res].name; ++res) { |
| | | if (matchPattern(options[res].name, strlen(options[res].name), parameter->ptr, parameter->len, NULL)) { |
| | | *value = options[res].tag; |
| | | result = TRUE; |
| | | break; |
| | | } |
| | | } |
| | | |
| | | if (!result) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_ILLEGAL_PARAMETER_VALUE); |
| | | } |
| | | } else { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_DATA_TYPE_ERROR); |
| | | } |
| | | |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | | * Find tag in choices and returns its first textual representation |
| | | * @param options specifications of choices numbers (patterns) |
| | | * @param tag numerical representatio of choice |
| | | * @param text result text |
| | | * @return TRUE if succesfule, else FALSE |
| | | */ |
| | | scpi_bool_t SCPI_ChoiceToName(const scpi_choice_def_t * options, int32_t tag, const char ** text) { |
| | | int i; |
| | | |
| | | for (i = 0; options[i].name != NULL; i++) { |
| | | if (options[i].tag == tag) { |
| | | *text = options[i].name; |
| | | return TRUE; |
| | | } |
| | | } |
| | | |
| | | return FALSE; |
| | | } |
| | | |
| | | /** |
| | |
| | | * @param context |
| | | * @param value |
| | | * @param mandatory |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamBool(scpi_t * context, scpi_bool_t * value, scpi_bool_t mandatory) |
| | | { |
| | | scpi_bool_t SCPI_ParamBool(scpi_t * context, scpi_bool_t * value, scpi_bool_t mandatory) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | int32_t intval; |
| | | |
| | | scpi_choice_def_t bool_options[] = { |
| | | {"OFF", 0}, |
| | | {"ON", 1}, |
| | | SCPI_CHOICE_LIST_END /* termination of option list */ |
| | | }; |
| | | |
| | | if (!value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | |
| | | |
| | | if (result) { |
| | | switch (param.type) { |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | *value = param.number.value ? 1 : 0; |
| | | break; |
| | | case SCPI_TOKEN_PROGRAM_MNEMONIC: |
| | | if (compareStr("ON", 2, param.data.ptr, param.data.len)) { |
| | | *value = TRUE; |
| | | } else if (compareStr("OFF", 3, param.data.ptr, param.data.len)) { |
| | | *value = FALSE; |
| | | } else { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_ILLEGAL_PARAMETER_VALUE); |
| | | result = FALSE; |
| | | } |
| | | break; |
| | | default: |
| | | SCPI_ErrorPush(context, SCPI_ERROR_DATA_TYPE_ERROR); |
| | | result = FALSE; |
| | | } |
| | | if (param.type == SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA) { |
| | | SCPI_ParamToInt(context, ¶m, &intval); |
| | | *value = intval ? TRUE : FALSE; |
| | | } else { |
| | | result = SCPI_ParamToChoice(context, ¶m, bool_options, &intval); |
| | | if (result) { |
| | | *value = intval ? TRUE : FALSE; |
| | | } |
| | | } |
| | | } |
| | | |
| | | |
| | | return result; |
| | | } |
| | | |
| | |
| | | * @param options |
| | | * @param value |
| | | * @param mandatory |
| | | * @return |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamChoice(scpi_t * context, const char * options[], int32_t * value, scpi_bool_t mandatory) |
| | | { |
| | | size_t res; |
| | | scpi_bool_t SCPI_ParamChoice(scpi_t * context, const scpi_choice_def_t * options, int32_t * value, scpi_bool_t mandatory) { |
| | | scpi_bool_t result; |
| | | scpi_parameter_t param; |
| | | |
| | | |
| | | if (!options || !value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | if (result) { |
| | | if (param.type == SCPI_TOKEN_PROGRAM_MNEMONIC) { |
| | | for (res = 0; options[res]; ++res) { |
| | | if (matchPattern(options[res], strlen(options[res]), param.data.ptr, param.data.len)) { |
| | | *value = res; |
| | | break; |
| | | } |
| | | } |
| | | |
| | | if (!options[res]) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_ILLEGAL_PARAMETER_VALUE); |
| | | result = FALSE; |
| | | } |
| | | } else { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_DATA_TYPE_ERROR); |
| | | result = FALSE; |
| | | } |
| | | result = SCPI_ParamToChoice(context, ¶m, options, value); |
| | | } |
| | | |
| | | return result; |
| | |
| | | * Parse one parameter and detect type |
| | | * @param state |
| | | * @param token |
| | | * @return |
| | | * @return |
| | | */ |
| | | int scpiParser_parseProgramData(lex_state_t * state, scpi_token_t * token) { |
| | | scpi_token_t tmp; |
| | |
| | | * @param state |
| | | * @param token |
| | | * @param numberOfParameters |
| | | * @return |
| | | * @return |
| | | */ |
| | | int scpiParser_parseAllProgramData(lex_state_t * state, scpi_token_t * token, int * numberOfParameters) { |
| | | |
| | |
| | | return token->len; |
| | | } |
| | | |
| | | static void invalidateToken(scpi_token_t * token, const char * ptr) { |
| | | token->len = 0; |
| | | token->ptr = ptr; |
| | | token->type = SCPI_TOKEN_UNKNOWN; |
| | | } |
| | | |
| | | /** |
| | | * Skip complete command line - program header and parameters |
| | | * @param state |
| | | * @param buffer |
| | | * @param len |
| | | * @return |
| | | * @return |
| | | */ |
| | | int scpiParser_detectProgramMessageUnit(scpi_parser_state_t * state, const char * buffer, int len) { |
| | | int scpiParser_detectProgramMessageUnit(scpi_parser_state_t * state, char * buffer, int len) { |
| | | lex_state_t lex_state; |
| | | scpi_token_t tmp; |
| | | int result = 0; |
| | |
| | | state->programHeader.len = 1; |
| | | state->programHeader.type = SCPI_TOKEN_INVALID; |
| | | |
| | | invalidateToken(&state->programData, lex_state.buffer); |
| | | invalidateToken(&state->programData, lex_state.buffer); |
| | | } |
| | | |
| | | if (SCPI_TOKEN_SEMICOLON == tmp.type) { |
| | |
| | | return lex_state.pos - lex_state.buffer; |
| | | } |
| | | |
| | | /** |
| | | * Check current command |
| | | * - suitable for one handle to multiple commands |
| | | * @param context |
| | | * @param cmd |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_IsCmd(scpi_t * context, const char * cmd) { |
| | | const char * pattern; |
| | | |
| | | if (!context->param_list.cmd) { |
| | | return FALSE; |
| | | } |
| | | |
| | | pattern = context->param_list.cmd->pattern; |
| | | return matchCommand (pattern, cmd, strlen (cmd), NULL, 0); |
| | | } |
| | | |
| | | /** |
| | | * Return the .tag field of the matching scpi_command_t |
| | | * @param context |
| | | * @return |
| | | */ |
| | | int32_t SCPI_CmdTag(scpi_t * context) { |
| | | if (context->param_list.cmd) { |
| | | return context->param_list.cmd->tag; |
| | | } else { |
| | | return 0; |
| | | } |
| | | } |
| | | |
| | | scpi_bool_t SCPI_Match(const char * pattern, const char * value, size_t len) { |
| | | return matchCommand (pattern, value, len, NULL, 0); |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | scpi_bool_t SCPI_CommandNumbers(scpi_t * context, int32_t * numbers, size_t len) { |
| | | return matchCommand (context->param_list.cmd->pattern, context->param_list.cmd_raw.data, context->param_list.cmd_raw.length, numbers, len); |
| | | } |