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use bufio;
use fmt;
use fs;
use io;
use os;
use strings;
export fn main() void = {
// Get user input
const filename = get_filename();
const filedata = get_input();
// Save to file and return the message
let message = save_input(filename, filedata);
fmt::printfln("{}", message)!;
};
fn get_filename() str = {
// Ask user for filename
fmt::printfln("Enter a file name to create:")!;
// Read the buffer
const input = bufio::scanline(os::stdin)! as []u8;
// Convert to string and return
return strings::fromutf8(input)!;
};
fn get_input() []u8 = {
// Ask user for input
fmt::printfln("Enter some words or data to write to a file:")!;
// Read the buffer
const input = bufio::scanline(os::stdin)! as []u8;
// Return the data
return input;
};
fn save_input(file_name: str, file_data: []u8) str = {
// USER_RW = 384, Read and write permissions for the file owner
let file_mode: fs::mode = 384;
// Create a file buffer as USER_RW using the provided file name
let file_buffer = os::create(file_name, file_mode);
// Handle the tagged union for (1) a successful file buffer, or (2) an
// error
match (file_buffer) {
// (1) Write the data, close the file, and return a success message
case let file: io::file =>
io::write(file, file_data)!;
io::close(file)!;
return "Data saved successfully. Check the file you created!";
// (2) Return the error message as a string
case let e: fs::error =>
return fs::strerror(e);
};
};
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