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HEADER <- 2048
PORT <- 6011
SERVER <- "localhost"
FORMAT <- "utf-8"
DISCONNECT_MESSAGE <- "!DISSCONNECT"
UUID <- commandArgs(trailingOnly = TRUE)[1]
TARGET_FILE <- commandArgs(trailingOnly = TRUE)[2]
data_type_vect <- c(
character = "character",
str = "character",
integer = "integer",
int = "integer",
double = "double",
float = "double",
logical = "logical",
bool = "logical"
)
display_msg <- function(...) {
cat("\033[94m")
cat(
...,
end = "\033[0m\n"
)
}
# may not need to pass connection if it will only be 1 per dialogue
send <- function(conn, data, send_data_type = FALSE) {
if (send_data_type) {
data_type_name <- typeof(data)
writeBin(data_type_name, conn)
}
writeBin(data, conn)
}
# may not need to pass connection if it will only be 1 per dialogue
# I still want to consolidate the recv_data_type and set_data_type args
recv <- function(conn, recv_data_type = FALSE, set_data_type = "character") {
if (recv_data_type) {
suppressWarnings(data_type <- readBin(conn, "raw", HEADER))
while (length(data_type) == 0) {
suppressWarnings(data_type <- readBin(conn, "raw", HEADER))
}
data_type <- readBin(data_type, "character")
data_type <- data_type_vect[data_type]
send(con, TRUE)
} else {
data_type <- set_data_type
}
suppressWarnings(data <- readBin(conn, "raw", HEADER))
while (length(data) == 0) {
suppressWarnings(data <- readBin(conn, "raw", HEADER))
}
data <- readBin(data, data_type)
return(data)
}
find_connection <- function() {
connected <- FALSE
while (!connected) {
con <- socketConnection(
host = SERVER,
port = PORT,
server = FALSE,
open = "a+b"
)
send(con, UUID)
uuid_chk <- recv(con)
connected <- (UUID == uuid_chk)
if (!connected) {
close(con)
}
}
return(con)
}
import_variable <- function() {
var_name <- recv(con, FALSE, "character")
var_val <- get(var_name)
send(con, var_val, TRUE)
}
evaluate_expression <- function() {
arg_count <- recv(con, FALSE, "integer")
send(con, TRUE)
kwarg_count <- recv(con, FALSE, "integer")
send(con, TRUE)
method_name <- recv(con, FALSE, "character")
send(con, TRUE)
args <- list()
if (arg_count > 0) {
for (i in 1:arg_count) {
args <- c(args, recv(con, TRUE))
send(con, TRUE)
}
}
kwargs <- list()
if (kwarg_count > 0) {
keys <- c()
vals <- list()
for (i in 1:kwarg_count) {
keys <- c(keys, recv(con))
send(con, TRUE)
vals <- c(vals, recv(con, TRUE))
send(con, TRUE)
}
kwargs <- setNames(vals, keys)
}
args <- c(args, kwargs)
result <- do.call(method_name, args)
send(con, result, TRUE)
}
con <- find_connection()
#load target file
source(TARGET_FILE)
send(con, TRUE)
cmd_int <- -1
while (cmd_int != 0) {
cmd_int <- recv(con, FALSE, "integer")
if (cmd_int == 1){
send(con, TRUE)
import_variable()
} else if (cmd_int == 2) {
send(con, TRUE)
evaluate_expression()
}
}
close(con)
|
