| | |
| | | /* |
| | | * Special number values definition |
| | | */ |
| | | const scpi_special_number_def_t scpi_special_numbers_def[] = { |
| | | const scpi_choice_def_t scpi_special_numbers_def[] = { |
| | | {/* name */ "MINimum", /* type */ SCPI_NUM_MIN}, |
| | | {/* name */ "MAXimum", /* type */ SCPI_NUM_MAX}, |
| | | {/* name */ "DEFault", /* type */ SCPI_NUM_DEF}, |
| | |
| | | {/* name */ "NAN", /* type */ SCPI_NUM_NAN}, |
| | | {/* name */ "INFinity", /* type */ SCPI_NUM_INF}, |
| | | {/* name */ "NINF", /* type */ SCPI_NUM_NINF}, |
| | | SCPI_SPECIAL_NUMBERS_LIST_END, |
| | | SCPI_CHOICE_LIST_END, |
| | | }; |
| | | |
| | | /** |
| | | * Match string constant to one of special number values |
| | | * @param specs specifications of special numbers (patterns) |
| | | * @param str string to be recognised |
| | | * @param len length of string |
| | | * @param value resultin value |
| | | * @return TRUE if str matches one of specs patterns |
| | | */ |
| | | static scpi_bool_t translateSpecialNumber(const scpi_special_number_def_t * specs, const char * str, size_t len, scpi_number_t * value) { |
| | | int i; |
| | | |
| | | value->value = 0.0; |
| | | value->unit = SCPI_UNIT_NONE; |
| | | value->type = SCPI_NUM_NUMBER; |
| | | |
| | | if (specs == NULL) { |
| | | return FALSE; |
| | | } |
| | | |
| | | for (i = 0; specs[i].name != NULL; i++) { |
| | | if (matchPattern(specs[i].name, strlen(specs[i].name), str, len)) { |
| | | value->type = specs[i].type; |
| | | return TRUE; |
| | | } |
| | | } |
| | | |
| | | return FALSE; |
| | | } |
| | | |
| | | /** |
| | | * Convert special number type to its string representation |
| | | * @param specs specifications of special numbers (patterns) |
| | | * @param type type of special number |
| | | * @return String representing special number or NULL |
| | | */ |
| | | static const char * translateSpecialNumberInverse(const scpi_special_number_def_t * specs, scpi_special_number_t type) { |
| | | int i; |
| | | |
| | | if (specs == NULL) { |
| | | return NULL; |
| | | } |
| | | |
| | | for (i = 0; specs[i].name != NULL; i++) { |
| | | if (specs[i].type == type) { |
| | | return specs[i].name; |
| | | } |
| | | } |
| | | |
| | | return NULL; |
| | | } |
| | | |
| | | /** |
| | | * Convert string describing unit to its representation |
| | |
| | | * @param mandatory if the parameter is mandatory |
| | | * @return |
| | | */ |
| | | scpi_bool_t SCPI_ParamNumber(scpi_t * context, scpi_number_t * value, scpi_bool_t mandatory) |
| | | scpi_bool_t SCPI_ParamNumber(scpi_t * context, const scpi_choice_def_t * special, scpi_number_t * value, scpi_bool_t mandatory) |
| | | { |
| | | scpi_token_t token; |
| | | lex_state_t state; |
| | | scpi_parameter_t param; |
| | | scpi_bool_t result; |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | |
| | | int32_t intval; |
| | | |
| | | state.buffer = param.data.ptr; |
| | | if (!value) { |
| | | SCPI_ErrorPush(context, SCPI_ERROR_SYSTEM_ERROR); |
| | | return FALSE; |
| | | } |
| | | |
| | | result = SCPI_Parameter(context, ¶m, mandatory); |
| | | |
| | | if (!result) { |
| | | return result; |
| | | } |
| | | |
| | | state.buffer = param.ptr; |
| | | state.pos = state.buffer; |
| | | state.len = param.data.len; |
| | | state.len = param.len; |
| | | |
| | | switch(param.type) { |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | case SCPI_TOKEN_HEXNUM: |
| | | case SCPI_TOKEN_OCTNUM: |
| | | case SCPI_TOKEN_BINNUM: |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX: |
| | | case SCPI_TOKEN_PROGRAM_MNEMONIC: |
| | | value->unit = SCPI_UNIT_NONE; |
| | | value->type = SCPI_NUM_NUMBER; |
| | | result = TRUE; |
| | | break; |
| | | } |
| | | |
| | | switch(param.type) { |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX: |
| | | case SCPI_TOKEN_PROGRAM_MNEMONIC: |
| | | value->base = 10; |
| | | break; |
| | | case SCPI_TOKEN_BINNUM: |
| | | value->base = 2; |
| | | break; |
| | | case SCPI_TOKEN_HEXNUM: |
| | | value->base = 16; |
| | | break; |
| | | case SCPI_TOKEN_OCTNUM: |
| | | value->base = 8; |
| | | break; |
| | | } |
| | | |
| | | switch(param.type) { |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA: |
| | | SCPI_ParamToDouble(context, ¶m, &(value->value)); |
| | | break; |
| | | case SCPI_TOKEN_HEXNUM: |
| | | SCPI_ParamToDouble(context, ¶m, &(value->value)); |
| | | break; |
| | | case SCPI_TOKEN_OCTNUM: |
| | | SCPI_ParamToDouble(context, ¶m, &(value->value)); |
| | | break; |
| | | case SCPI_TOKEN_BINNUM: |
| | | SCPI_ParamToDouble(context, ¶m, &(value->value)); |
| | | break; |
| | | case SCPI_TOKEN_DECIMAL_NUMERIC_PROGRAM_DATA_WITH_SUFFIX: |
| | | scpiLex_DecimalNumericProgramData(&state, &token); |
| | | scpiLex_WhiteSpace(&state, &token); |
| | | scpiLex_SuffixProgramData(&state, &token); |
| | | |
| | | result = transformNumber(context, token.ptr, token.len, ¶m.number); |
| | | SCPI_ParamToDouble(context, ¶m, &(value->value)); |
| | | |
| | | result = transformNumber(context, token.ptr, token.len, value); |
| | | break; |
| | | case SCPI_TOKEN_PROGRAM_MNEMONIC: |
| | | scpiLex_WhiteSpace(&state, &token); |
| | | scpiLex_CharacterProgramData(&state, &token); |
| | | |
| | | /* convert string to special number type */ |
| | | result = translateSpecialNumber(context->special_numbers, token.ptr, token.len, ¶m.number); |
| | | SCPI_ParamToChoice(context, &token, special, &intval); |
| | | |
| | | value->type = intval; |
| | | value->value = 0; |
| | | |
| | | break; |
| | | default: |
| | | result = FALSE; |
| | | } |
| | | |
| | | if (result) { |
| | | memcpy(value, ¶m.number, sizeof(scpi_number_t)); |
| | | } |
| | | |
| | | return result; |
| | |
| | | * @param len max length of string |
| | | * @return number of chars written to string |
| | | */ |
| | | size_t SCPI_NumberToStr(scpi_t * context, scpi_number_t * value, char * str, size_t len) { |
| | | size_t SCPI_NumberToStr(scpi_t * context, const scpi_choice_def_t * special, scpi_number_t * value, char * str, size_t len) { |
| | | const char * type; |
| | | const char * unit; |
| | | size_t result; |
| | |
| | | return 0; |
| | | } |
| | | |
| | | type = translateSpecialNumberInverse(context->special_numbers, value->type); |
| | | |
| | | if (type) { |
| | | if (SCPI_ChoiceToName(special, value->type, &type)) { |
| | | strncpy(str, type, len); |
| | | return min(strlen(type), len); |
| | | } |