Remove 'input' field of IPC command return json

This field is not in i3 and provides imprecise and redundant information.
(Specifically, when swaymsg is given a list of commands, the IPC return
array already indicates precisely which number command failed; knowing
the name of the command is not useful when multiple commands of the
same type are provided.)

include/sway/commands.h

@@ -31,7 +31,6 @@ enum cmd_status {
  */
 struct cmd_results {
 	enum cmd_status status;
-	char *input;
 	/**
 	 * Human friendly error message, or NULL on success
 	 */
@@ -63,7 +62,7 @@ list_t *execute_command(char *command,  struct sway_seat *seat,
  *
  * Do not use this under normal conditions.
  */
-struct cmd_results *config_command(char *command);
+struct cmd_results *config_command(char *command, char **new_block);
 /**
  * Parse and handle a sub command
  */

sway/commands.c

@@ -316,7 +316,7 @@ cleanup:
 //	  be chained together)
 // 4) execute_command handles all state internally while config_command has
 // some state handled outside (notably the block mode, in read_config)
-struct cmd_results *config_command(char *exec) {
+struct cmd_results *config_command(char *exec, char **new_block) {
 	struct cmd_results *results = NULL;
 	int argc;
 	char **argv = split_args(exec, &argc);
@@ -329,9 +329,8 @@ struct cmd_results *config_command(char *exec) {
 
 	// Check for the start of a block
 	if (argc > 1 && strcmp(argv[argc - 1], "{") == 0) {
-		char *block = join_args(argv, argc - 1);
-		results = cmd_results_new(CMD_BLOCK, block, NULL);
-		free(block);
+		*new_block = join_args(argv, argc - 1);
+		results = cmd_results_new(CMD_BLOCK, NULL, NULL);
 		goto cleanup;
 	}
 
@@ -509,11 +508,7 @@ struct cmd_results *cmd_results_new(enum cmd_status status,
 		return NULL;
 	}
 	results->status = status;
-	if (input) {
-		results->input = strdup(input); // input is the command name
-	} else {
-		results->input = NULL;
-	}
+	// NOTE: `input` argument is unused, remove
 	if (format) {
 		char *error = malloc(256);
 		va_list args;
@@ -530,9 +525,6 @@ struct cmd_results *cmd_results_new(enum cmd_status status,
 }
 
 void free_cmd_results(struct cmd_results *results) {
-	if (results->input) {
-		free(results->input);
-	}
 	if (results->error) {
 		free(results->error);
 	}
@@ -552,10 +544,6 @@ char *cmd_results_to_json(list_t *res_list) {
 			json_object_object_add(
 					root, "error", json_object_new_string(results->error));
 		}
-		if (results->input) {
-			json_object_object_add(
-					root, "input", json_object_new_string(results->input));
-		}
 		json_object_array_add(result_array, root);
 	}
 	const char *json = json_object_to_json_string(result_array);

sway/config.c

@@ -710,11 +710,12 @@ bool read_config(FILE *file, struct sway_config *config,
 		config->current_config_line_number = line_number;
 		config->current_config_line = line;
 		struct cmd_results *res;
+		char *new_block = NULL;
 		if (block && strcmp(block, "<commands>") == 0) {
 			// Special case
 			res = config_commands_command(expanded);
 		} else {
-			res = config_command(expanded);
+			res = config_command(expanded, &new_block);
 		}
 		switch(res->status) {
 		case CMD_FAILURE:
@@ -740,9 +741,9 @@ bool read_config(FILE *file, struct sway_config *config,
 			break;
 
 		case CMD_BLOCK:
-			wlr_log(WLR_DEBUG, "Entering block '%s'", res->input);
-			list_insert(stack, 0, strdup(res->input));
-			if (strcmp(res->input, "bar") == 0) {
+			wlr_log(WLR_DEBUG, "Entering block '%s'", new_block);
+			list_insert(stack, 0, strdup(new_block));
+			if (strcmp(new_block, "bar") == 0) {
 				config->current_bar = NULL;
 			}
 			break;
@@ -764,6 +765,7 @@ bool read_config(FILE *file, struct sway_config *config,
 					sizeof(config->handler_context));
 		default:;
 		}
+		free(new_block);
 		free(expanded);
 		free_cmd_results(res);
 	}