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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',
logical = 'logical',
bool = 'logical'
)
display_msg <- function(...) {
cat('\033[94m')
cat(
...,
end = '\033[0m\n'
)
}
add_missing_bits <- function(bits, base = 8) {
missing_bits <- length(bits) %% base
if (missing_bits > 0) {
missing_bits <- rep(as.raw(00), times = base - missing_bits)
bits <- c(bits, missing_bits)
}
return(bits)
}
bin_conv <- function(data, data_type_name = NA) {
conv_data <- NA
# convert to binary
if (is.character(data) && is.na(data_type_name)) {
conv_data <- charToRaw(data)
conv_data <- rawToBits(conv_data)
} else if (is.integer(data) && is.na(data_type_name)) {
conv_data <- as.raw(data)
conv_data <- rawToBits(conv_data)
} else if (is.logical(data) && is.na(data_type_name)) {
conv_data <- as.raw(data)
conv_data <- rawToBits(conv_data)
# convert from binary
} else if (is.raw(data) && data_type_name == "character") {
conv_data <- add_missing_bits(data)
conv_data <- packBits(conv_data, "raw")
conv_data <- rawToChar(conv_data)
} else if (is.raw(data) && data_type_name == "integer") {
conv_data <- add_missing_bits(data)
conv_data <- packBits(conv_data, "raw")
conv_data <- as.integer(conv_data)
} else if (is.raw(data) && data_type_name == "logical") {
conv_data <- add_missing_bits(data)
conv_data <- packBits(conv_data, "raw")
conv_data <- as.logical(conv_data)
}
return(conv_data)
}
# 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)
data_type_name <- bin_conv(data_type_name)
writeBin(data_type_name, conn)
}
bin_data <- bin_conv(data)
writeBin(bin_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_name <- readBin(conn, "raw", HEADER))
while (length(data_type_name) == 0) {
suppressWarnings(data_type_name <- readBin(conn, "raw", HEADER))
}
data_type_name <- bin_conv(data_type_name, "character")
data_type_name <- data_type_vect[data_type_name]
} else {
data_type_name <- set_data_type
}
suppressWarnings(data <- readBin(conn, "raw", HEADER))
while (length(data) == 0) {
suppressWarnings(data <- readBin(conn, "raw", HEADER))
}
data <- bin_conv(data, data_type_name)
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)
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)
}
}
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)
|
