1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
use std::error::{self, Error};
use std::fs::{File, OpenOptions};
use std::fmt;
use std::io::{self, BufRead, BufReader, Write};
use std::path::Path;
#[derive(Clone)]
pub struct Alias {
pub alias: String,
pub name: String,
pub email: String,
}
impl Alias {
pub 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 }
}
pub 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)
}
}
pub fn find_in_file<P: AsRef<Path>>(&self, file: P) -> 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(&self.email) {
return Err(AliasSearchError::EmailExists)
}
if split[1].starts_with(&self.alias) {
matches.push(split[1].to_owned());
}
}
if matches.is_empty() {
Err(AliasSearchError::NotFound)
} else {
Ok(matches)
}
}
pub fn write_to_file<P: AsRef<Path>>(&mut self, file: P) -> Result<(), AliasSearchError> {
let similar_aliases = try!(self.find_in_file(&file));
self.update_alias_id(similar_aliases);
let mut f = try!(OpenOptions::new().append(true).open(file));
try!(f.write_all(format!("{}\n", self.to_string()).as_bytes()));
Ok(())
}
pub fn update_alias_id(&mut self, similar_aliases: Vec<String>) {
if !similar_aliases.is_empty() {
self.alias = format!("{}-{}", self.alias, similar_aliases.len() + 1);
}
}
}
#[derive(Debug)]
pub enum AliasSearchError {
NotFound,
EmailExists,
Io(io::Error),
}
impl fmt::Display for AliasSearchError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
AliasSearchError::NotFound => writeln!(f, "{}", self.description()),
AliasSearchError::EmailExists => writeln!(f, "{}", self.description()),
AliasSearchError::Io(ref err) => writeln!(f, "IO error: {}", err),
}
}
}
impl error::Error for AliasSearchError {
fn description(&self) -> &str {
match *self {
AliasSearchError::NotFound => "Alias could not be found in aliases file",
AliasSearchError::EmailExists => "Email already exists in aliases file",
AliasSearchError::Io(ref err) => err.description(),
}
}
fn cause(&self) -> Option<&error::Error> {
match *self {
AliasSearchError::Io(ref err) => Some(err),
_ => None,
}
}
}
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,
},
}
}
}
|
