sola/scpi-parser.git

			@@ -188,6 +188,148 @@
			return SCPI_RES_OK;
			}

			struct _scpi_channel_value_t {
			int32_t row;
			int32_t col;
			};
			typedef struct _scpi_channel_value_t scpi_channel_value_t;

			/**
			* @brief
			* parses lists
			* channel numbers > 0.
			* no checks yet.
			* valid: (@1), (@3!1:1!3), ...
			* (@1!1:3!2) would be 1!1, 1!2, 2!1, 2!2, 3!1, 3!2.
			* (@3!1:1!3) would be 3!1, 3!2, 3!3, 2!1, 2!2, 2!3, ... 1!3.
			*
			* @param channel_list channel list, compare to SCPI99 Vol 1 Ch. 8.3.2
			*/
			static scpi_result_t TEST_Chanlst(scpi_t *context) {
			scpi_parameter_t channel_list_param;
			#define maxrow 2 //maximum number of rows
			#define maxcol 6 //maximum number of columns
			#define maxdim 2 //maximum number of dimensions
			scpi_channel_value_t array[maxrow * maxcol]; //array which holds values in order (2D)
			size_t chanlst_idx; //index for channel list
			size_t arr_idx = 0; //index for array
			size_t n, m = 1; //counters for row (n) and columns (m)

			// get channel list
			if (SCPI_Parameter(context, &channel_list_param, TRUE)) {
			scpi_expr_result_t res;
			scpi_bool_t is_range;
			int32_t values_from[maxdim];
			int32_t values_to[maxdim];
			size_t dimensions;

			bool for_stop_row = false; //true if iteration for rows has to stop
			bool for_stop_col = false; //true if iteration for columns has to stop
			int32_t dir_row = 1; //direction of counter for rows, +/-1
			int32_t dir_col = 1; //direction of counter for columns, +/-1

			// the next statement is valid usage and it gets only real number of dimensions for the first item (index 0)
			if (!SCPI_ExprChannelListEntry(context, &channel_list_param, 0, &is_range, NULL, NULL, 0, &dimensions)) {
			chanlst_idx = 0; //call first index
			arr_idx = 0; //set arr_idx to 0
			do { //if valid, iterate over channel_list_param index while res == valid (do-while cause we have to do it once)
			res = SCPI_ExprChannelListEntry(context, &channel_list_param, chanlst_idx, &is_range, values_from, values_to, 4, &dimensions);
			if (is_range == false) { //still can have multiple dimensions
			if (dimensions == 1) {
			//here we have our values
			//row == values_from[0]
			//col == 0 (fixed number)
			//call a function or something
			array[arr_idx].row = values_from[0];
			array[arr_idx].col = 0;
			} else if (dimensions == 2) {
			//here we have our values
			//row == values_fom[0]
			//col == values_from[1]
			//call a function or something
			array[arr_idx].row = values_from[0];
			array[arr_idx].col = values_from[1];
			} else {
			return SCPI_RES_ERR;
			break;
			}
			arr_idx++; //inkrement array where we want to save our values to, not neccessary otherwise
			} else if (is_range == true) {
			if (values_from[0] > values_to[0]) {
			dir_row = -1; //we have to decrement from values_from
			} else { //if (values_from[0] < values_to[0])
			dir_row = +1; //default, we increment from values_from
			}

			//iterating over rows, do it once -> set for_stop_row = false
			//needed if there is channel list index isn't at end yet
			for_stop_row = false;
			for (n = values_from[0]; for_stop_row == false; n += dir_row) {
			//usual case for ranges, 2 dimensions
			if (dimensions == 2) {
			if (values_from[1] > values_to[1]) {
			dir_col = -1;
			} else if (values_from[1] < values_to[1]) {
			dir_col = +1;
			}
			//iterating over columns, do it at least once -> set for_stop_col = false
			//needed if there is channel list index isn't at end yet
			for_stop_col = false;
			for (m = values_from[1]; for_stop_col == false; m += dir_col) {
			//here we have our values
			//row == n
			//col == m
			//call a function or something
			array[arr_idx].row = n;
			array[arr_idx].col = m;
			arr_idx++;
			if (m == (size_t)values_to[1]) {
			//endpoint reached, stop column for-loop
			for_stop_col = true;
			}
			}
			//special case for range, example: (@2!1)
			} else if (dimensions == 1) {
			//here we have values
			//row == n
			//col == 0 (fixed number)
			//call function or sth.
			array[arr_idx].row = n;
			array[arr_idx].col = 0;
			arr_idx++;
			}
			if (n == (size_t)values_to[0]) {
			//endpoint reached, stop row for-loop
			for_stop_row = true;
			}
			}


			} else {
			return SCPI_RES_ERR;
			break;
			}
			//increase index
			chanlst_idx++;
			} while (SCPI_EXPR_OK == SCPI_ExprChannelListEntry(context, &channel_list_param, chanlst_idx, &is_range, values_from, values_to, 4, &dimensions));
			//while checks, whether incremented index is valid
			}
			//do something at the end if needed
			array[arr_idx].row = 0;
			array[arr_idx].col = 0;
			}

			{
			size_t i;
			fprintf(stderr, "TEST_Chanlst: ");
			for (i = 0; i< arr_idx; i++) {
			fprintf(stderr, "%d!%d, ", array[i].row, array[i].col);
			}
			fprintf(stderr, "\r\n");
			}
			return SCPI_RES_OK;
			}

			/**
			* Reimplement IEEE488.2 *TST?
			*
			@@ -256,6 +398,7 @@
			{.pattern = "TEST#:NUMbers#", .callback = TEST_Numbers,},
			{.pattern = "TEST:TEXT", .callback = TEST_Text,},
			{.pattern = "TEST:ARBitrary?", .callback = TEST_ArbQ,},
			{.pattern = "TEST:CHANnellist", .callback = TEST_Chanlst,},

			SCPI_CMD_LIST_END
			};