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use std::io::{self, BufRead, BufReader};
use std::fs::File;
#[cfg(test)]
mod tests;
struct Alias {
alias: String,
name: String,
email: String,
}
impl Alias {
fn new(email: &str) -> Alias {
let mut split: Vec<&str> = email.split_whitespace().collect();
// Remove "From: "
split.remove(0);
let mut alias = String::new();
let mut name = String::new();
let mut email = String::new();
if split.len() == 1 {
alias = split[0].to_lowercase().to_string();
email = split[0].to_string();
} else if split.len() == 2 {
alias = split[0].to_lowercase().to_string();
name = split[0].to_string();
email = split[1].to_string();
} else if split.len() > 2 {
alias = format!("{}-{}", split[split.len() - 2], split[0]).to_lowercase().to_string();
name = split[0..(split.len() - 1)].join(" ");
email = split[split.len() - 1].to_string();
}
alias = alias.replace(',', "");
alias = alias.replace('\'', "");
alias = alias.replace('"', "");
Alias { alias: alias, name: name, email: email }
}
fn to_string(&self) -> String {
if self.name.is_empty() {
format!("alias {} {}", self.alias, self.email)
} else {
format!("alias {} {} {}", self.alias, self.name, self.email)
}
}
}
fn handle_alias(s: &str) {
let alias = build_alias(s);
}
fn build_alias(s: &str) -> String {
let mut split: Vec<&str> = s.split_whitespace().collect();
// Remove "From: "
split.remove(0);
let mut alias_line = String::from("alias ");
let mut alias = String::new();
if split.len() == 1 {
alias = format!("{} ", split[0].to_lowercase());
} else if split.len() == 2 {
alias = format!("{} ", split[0].to_lowercase());
} else if split.len() > 2 {
alias = format!("{}-{} ", split[split.len() - 2], split[0]).to_lowercase();
}
alias = alias.replace(',', "");
alias = alias.replace('\'', "");
alias = alias.replace('"', "");
alias_line.push_str(&alias);
alias_line.push_str(&split.join(" "));
alias_line
}
#[derive(Debug)]
enum AliasSearchError {
NotFound,
EmailExists,
Io(io::Error),
}
// impl fmt::Display for AliasSearchError {}
// impl error::Error for AliasSearchError {}
impl From<io::Error> for AliasSearchError {
fn from(err: io::Error) -> AliasSearchError {
AliasSearchError::Io(err)
}
}
#[cfg(test)]
impl PartialEq<AliasSearchError> for AliasSearchError {
fn eq(&self, other: &AliasSearchError) -> bool {
match *self {
AliasSearchError::NotFound => match *other {
AliasSearchError::NotFound => true,
_ => false,
},
AliasSearchError::EmailExists => match *other {
AliasSearchError::EmailExists => true,
_ => false,
},
AliasSearchError::Io(_) => match *other {
AliasSearchError::Io(_) => true,
_ => false,
},
}
}
}
fn find_alias_in_file(alias: &Alias, file: &str) -> Result<Vec<String>, AliasSearchError> {
let mut matches = Vec::new();
let f = try!(File::open(file));
let file = BufReader::new(&f);
for line in file.lines() {
let line = try!(line);
let split: Vec<&str> = line.split_whitespace().collect();
if line.contains(&alias.email) {
return Err(AliasSearchError::EmailExists)
}
if split[1].starts_with(&alias.alias) {
matches.push(line.to_owned());
}
}
if matches.is_empty() {
Err(AliasSearchError::NotFound)
} else {
Ok(matches)
}
}
fn main() {
let stdin = io::stdin();
let input: Vec<String> = stdin.lock().lines().map(|line| line.unwrap()).collect();
for line in &input {
if line.starts_with("From: ") {
println!("!!!!!!!! {}", line);
// run matcher function
handle_alias(line);
}
}
for l in &input {
println!("{}", l);
}
// if alias not new
// do nothing
// if alias is new
// if real_alias is in alias file
// if email address is in alias file
// do nothing
//
// find all instances of real_alias
// get instance with greatest id number
//
// change real_alias to "#{real_alias}-#{id + 1}"
//
// if only one instance
// append "-2" to real_alias
//
// add alias to alias file
}
|
