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use std::fs;
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use std::path::Path;
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use clap::{Arg, App};
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/// Indicator of where the message should be in fumofile
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const MESSAGE_INDICATOR: &str = "!message";
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/// Fumofile name of the default fumo
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const FUMO_DEFAULT: &str = "cirno.fumo";
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/// Default directory where fumofiles are placed
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const DEFAULT_FUMOFILES_DIR: &str = "/usr/share/fumosay/fumofiles/";
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/// Returns a resulting string with `MESSAGE_INDICATOR` replaced with given
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/// `message`. If `MESSAGE_INDICATOR` is not present in fumofile - the
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/// `message` will be added on the new line at the end of the fumofile.
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fn process_message(fumofile_contents: &mut String, message: &str) -> String {
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if fumofile_contents.contains(MESSAGE_INDICATOR) {
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return fumofile_contents.replace(MESSAGE_INDICATOR,message);
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}
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return format!("{}\n{}", fumofile_contents, message);
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}
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fn main() {
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// get command line arguments
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let matches = App::new("fumosay")
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.version("0.4.0")
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.author("Unbewohnte | Nikolay Kasyanov <https://github.com/Unbewohnte>")
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.about("cowsay, but with soft friends")
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.arg(
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Arg::with_name("fumo")
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.short("f")
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.long("fumo")
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.value_name("fumofile")
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.help("Choose another fumofumo to print")
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.takes_value(true)
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.required(false)
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.default_value(FUMO_DEFAULT)
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)
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.arg(
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Arg::with_name("fumofiles_directory")
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.short("d")
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.long("fumofiles_directory")
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.value_name("fumofiles_directory_path")
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.help("Look for fumofiles in given directory")
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.takes_value(true)
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.required(false)
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.default_value(DEFAULT_FUMOFILES_DIR)
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)
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.arg(
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Arg::with_name("list_fumos")
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.short("l")
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.long("list_fumos")
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.help("Lists all fumofiles in the default directory instead")
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.takes_value(false)
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.required(false)
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)
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.arg(
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Arg::with_name("message")
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.short("m")
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.long("message")
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.help("Message to print")
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.takes_value(true)
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.index(1)
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.multiple(true)
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).get_matches();
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// check for list_fumos flag.
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if matches.is_present("list_fumos") {
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// list fumofiles and exit
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let fumofiles = fs::read_dir(DEFAULT_FUMOFILES_DIR).expect("Could not read default fumofiles directory");
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for entry in fumofiles {
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let file = entry.unwrap();
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let filename = file.file_name();
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print!("{:?}\n", filename);
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}
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std::process::exit(0);
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}
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// process fumofiles directory
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// directory with all fumofiles
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let new_fumofiles_dir = matches.value_of("fumofiles_directory").unwrap();
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// name of the fumofile to work with
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let fumofile_name = matches.value_of("fumo").unwrap();
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// the whole path to the selected fumo
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let fumofile_path = Path::new(&new_fumofiles_dir).join(fumofile_name);
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// read fumofile
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let mut fumofile_contents: String = fs::read_to_string(fumofile_path).expect("Could not find a fumofile!");
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// process the message
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let message_values = matches.values_of("message").expect("No message provided");
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let message_vec: Vec<&str> = message_values.collect();
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let joined_message = message_vec.join(" ");
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// parse the file, insert fiven message and get the resulting string
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let fumosay: String = process_message(&mut fumofile_contents, joined_message.as_str());
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println!("{}", fumosay);
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}
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