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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
use chrono::Duration;
use regex::{
Match,
Regex,
};
use lazy_static::lazy_static;
lazy_static! {
static ref START_REGEX: Regex =
Regex::new(r"(?:start|begin(?:ning)?)\s*=?\s*(?:(?P<hours>\d+)h\s?)?(?:(?P<minutes>\d+)m\s?)?(?:(?P<seconds>\d+)s?)?").unwrap();
static ref DUR_REGEX: Regex =
Regex::new(r"dur(?:ation)?\s*=?\s*(?:(?P<hours>\d+)h\s?)?(?:(?P<minutes>\d+)m\s?)?(?:(?P<seconds>\d+)s?)?").unwrap();
static ref END_REGEX: Regex =
Regex::new(r"(?:end|term(?:inate|ination)?)\s*=?\s*(?:(?P<hours>\d+)h\s?)?(?:(?P<minutes>\d+)m\s?)?(?:(?P<seconds>\d+)s?)?").unwrap();
}
pub fn parse_times<A: AsRef<str>>(s: A) -> (Option<Duration>, Option<Duration>) {
fn parse_match(m: Option<Match>) -> u64 {
m.and_then(|s| s.as_str().parse::<u64>().ok()).unwrap_or(0)
}
fn parse_captures<B: AsRef<str>>(r: &Regex, s: B) -> Option<Duration> {
r.captures(s.as_ref())
.map(|capt| {
let hours = parse_match(capt.name("hours"));
let minutes = parse_match(capt.name("minutes"));
let seconds = parse_match(capt.name("seconds"));
let result = Duration::hours(hours as i64) +
Duration::minutes(minutes as i64) +
Duration::seconds(seconds as i64);
assert!(result >= Duration::zero());
result
})
}
let start_time = parse_captures(&START_REGEX, &s);
let dur = parse_captures(&DUR_REGEX, &s);
let end_time = parse_captures(&END_REGEX, s)
.or_else(|| start_time.and_then(|start| dur.map(|d| start + d)));
(start_time, end_time)
}
#[cfg(test)]
mod test {
use time::Duration;
use itertools::iproduct;
use super::*;
#[test]
fn test_start() {
let captures = START_REGEX.captures("start 1h2m3s").unwrap();
assert_eq!(captures.name("hours").unwrap().as_str(), "1");
assert_eq!(captures.name("minutes").unwrap().as_str(), "2");
assert_eq!(captures.name("seconds").unwrap().as_str(), "3");
assert!(START_REGEX.captures("").is_none());
let captures = START_REGEX.captures("start 1").unwrap();
assert_eq!(captures.name("seconds").unwrap().as_str(), "1");
}
#[test]
fn test_dur() {
let captures = DUR_REGEX.captures("dur 1h2m3s").unwrap();
assert_eq!(captures.name("hours").unwrap().as_str(), "1");
assert_eq!(captures.name("minutes").unwrap().as_str(), "2");
assert_eq!(captures.name("seconds").unwrap().as_str(), "3");
assert!(DUR_REGEX.captures("").is_none());
let captures = DUR_REGEX.captures("dur 1").unwrap();
assert_eq!(captures.name("seconds").unwrap().as_str(), "1");
}
#[test]
fn test_end() {
let captures = END_REGEX.captures("end 1h2m3s").unwrap();
assert_eq!(captures.name("hours").unwrap().as_str(), "1");
assert_eq!(captures.name("minutes").unwrap().as_str(), "2");
assert_eq!(captures.name("seconds").unwrap().as_str(), "3");
assert!(END_REGEX.captures("").is_none());
let captures = END_REGEX.captures("end 1").unwrap();
assert_eq!(captures.name("seconds").unwrap().as_str(), "1");
}
#[test]
fn test_parse_matrix() {
fn format_time(d: &Duration) -> impl Iterator<Item=String> {
let seconds = d.num_seconds() % 60;
let minutes = d.num_minutes() % 60;
let hours = d.num_hours();
let elems = vec![true, false];
#[inline]
fn format_maybe_zero<S: AsRef<str>>(v: i64, unit: S, always: bool) -> String {
if always || v != 0 {
format!("{}{}", v, unit.as_ref())
} else {
"".to_owned()
}
}
iproduct!(elems.clone(), elems.clone(), elems)
.filter_map(move |(secs, mins, hr)| {
if !secs && !mins && !hr {
return None;
}
let hr_string = format_maybe_zero(hours, "h", hr);
let mn_string = format_maybe_zero(minutes, "m", mins);
let sec_string = format_maybe_zero(seconds, "s", secs);
Some(format!("{}{}{}", hr_string, mn_string, sec_string))
})
}
let start_times = vec![None, Some(Duration::seconds(0)), Some(Duration::seconds(32))];
let durs = vec![None, Some(Duration::seconds(0)), Some(Duration::seconds(123141))];
let end_times = vec![None, Some(Duration::seconds(0)), Some(Duration::seconds(19851598))];
let start_names = vec!["start", "begin", "beginning"];
let dur_names = vec!["dur", "duration"];
let end_names = vec!["end", "term", "terminate", "termination"];
let pairs = vec! [
(start_times, start_names),
(durs, dur_names),
(end_times, end_names),
];
let elems = pairs.into_iter()
.map(|(times, names)| {
let result = times.into_iter()
.flat_map(move |d| {
let names_iter = names.clone().into_iter();
d.as_ref().map(move |dur| {
let dur = dur.clone();
Box::new(iproduct!(format_time(&dur), names_iter)
.map(move |(time, name)| Some((dur, format!("{} {}", name, time))))) as Box<dyn Iterator<Item=Option<(Duration, String)>>>
}).unwrap_or_else(|| Box::new(::std::iter::once(None)))
});
result.collect::<Vec<Option<(Duration, String)>>>()
})
.collect::<Vec<Vec<Option<(Duration, String)>>>>();
let start_iters = &elems[0];
let dur_iters = &elems[1];
let end_iters = &elems[2];
iproduct!(start_iters, dur_iters, end_iters)
.for_each(|(start, dur, end)| {
let s = vec![start, dur, end]
.into_iter()
.filter_map(|o| {
o.as_ref().map(|(_, formatted)| formatted.to_owned())
})
.collect::<Vec<_>>()
.join(" ");
println!("testing {}", s);
let (parse_start, parse_end) = parse_times(s);
match start {
Some((dur, _)) => assert_eq!(*dur, parse_start.unwrap()),
None => assert_eq!(None, parse_start),
}
match end {
Some((d, _)) => assert_eq!(*d, parse_end.unwrap()),
None => {
match dur {
Some((d, _)) => {
match start {
Some((s, _)) => assert_eq!(parse_end.unwrap(), *s + *d),
None => assert_eq!(None, parse_end),
}
},
None => assert_eq!(None, parse_end),
}
}
}
});
}
}
|
