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
153
154
155
156
157
158
159
160
161
162
163
164
|
use std::io;
use std::io::{BufRead, BufReader, Error, ErrorKind, Read};
use std::fs::File;
use std::process::exit;
use argparse::{ArgumentParser, StoreTrue, Store};
mod benchmark;
mod device;
mod day1;
mod day2;
mod day3;
mod day4;
mod day5;
mod day6;
mod day7;
mod day8;
mod day9;
mod day10;
mod day11;
mod day12;
mod day13;
mod day14;
mod day15;
mod day16;
mod day17;
mod day18;
mod day19;
mod day20;
static NUM_DAYS: i32 = 20;
fn day_switch<T: BufRead>(day: i32, reader: T) -> io::Result<(String, String)> {
match day {
1 => day1::main(reader),
2 => day2::main(reader),
3 => day3::main(reader),
4 => day4::main(reader),
5 => day5::main(reader),
6 => day6::main(reader),
7 => day7::main(reader),
8 => day8::main(reader),
9 => day9::main(reader),
10 => day10::main(reader),
11 => day11::main(reader),
12 => day12::main(reader),
13 => day13::main(reader),
14 => day14::main(reader),
15 => day15::main(reader),
16 => day16::main(reader),
17 => day17::main(reader),
18 => day18::main(reader),
19 => day19::main(reader),
20 => day20::main(reader),
_ => Err(Error::new(ErrorKind::Other, "Invalid day"))
}
}
fn file_for_day(day: i32) -> io::Result<BufReader<File>> {
match File::open(format!("input/{}.txt", day)) {
Ok(f) => Ok(BufReader::new(f)),
Err(_) => Err(Error::new(ErrorKind::Other, format!("No input file for day {}", day)))
}
}
fn benchmark_day(day: i32) -> io::Result<f64> {
let mut input = Vec::new();
file_for_day(day)?.read_to_end(&mut input)?;
let res = benchmark::benchmark(|| day_switch(day, BufReader::new(&input[..])).unwrap());
println!("Day {}: {}", day, res);
Ok(res.duration)
}
fn benchmark_all_days() -> io::Result<()> {
let mut total = 0.0;
for day in 1..NUM_DAYS + 1 {
total += benchmark_day(day)?;
}
println!("Total: {} secs", total);
Ok(())
}
struct Options {
use_stdin: bool,
bench: bool,
}
fn run_day(day: i32, opts: &Options) -> io::Result<()> {
let (part1, part2) = if opts.bench {
benchmark_day(day)?;
return Ok(())
} else if opts.use_stdin {
day_switch(day, BufReader::new(io::stdin()))?
} else {
day_switch(day, file_for_day(day)?)?
};
println!("{}", part1);
println!("{}", part2);
Ok(())
}
fn run_all_days(opts: &Options) -> io::Result<()> {
if opts.bench {
assert!(!opts.use_stdin);
benchmark_all_days()
} else {
for day in 1..NUM_DAYS + 1 {
run_day(day, &opts)?;
}
Ok(())
}
}
fn error_handler<F>(func: F) -> io::Result<()>
where F: Fn() -> io::Result<()> {
match func() {
Ok(()) => Ok(()),
Err(err) => {
if err.kind() == ErrorKind::Other {
println!("Error: {}", err);
exit(1)
} else {
Err(err)
}
}
}
}
fn main() -> io::Result<()> {
let mut day_string = String::new();
let mut options = Options {
use_stdin: false,
bench: false,
};
{
let mut parser = ArgumentParser::new();
parser.set_description("AOC 2018 solutions by Tom Smeding");
parser.refer(&mut options.use_stdin)
.add_option(&["-s", "--stdin"], StoreTrue, "Read from stdin");
parser.refer(&mut options.bench)
.add_option(&["-b", "--bench"], StoreTrue, "Benchmark the given days");
parser.refer(&mut day_string)
.add_argument("day", Store, "Day to execute");
parser.parse_args_or_exit();
}
error_handler(||
if day_string.len() == 0 {
run_all_days(&options)
} else {
match day_string.parse::<i32>() {
Ok(day) => run_day(day, &options),
Err(_) => {
println!("Invalid day argument");
exit(1)
}
}
}
)
}
|
