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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
//! A set of helper traits
pub use self::digit::Digit;
pub use self::file::{code_path, load_script};
pub use self::filter::{filter, squash};
pub use self::html::HTML;
/// Convert i32 to specific digits string.
mod digit {
/// Abstract Digit trait, fill the empty space to specific length.
pub trait Digit<T> {
fn digit(self, d: T) -> String;
}
impl Digit<i32> for i32 {
fn digit(self, d: i32) -> String {
let mut s = self.to_string();
let space = " ".repeat((d as usize) - s.len());
s.push_str(&space);
s
}
}
impl Digit<i32> for String {
fn digit(self, d: i32) -> String {
let mut s = self.clone();
let space = " ".repeat((d as usize) - self.len());
s.push_str(&space);
s
}
}
impl Digit<i32> for &'static str {
fn digit(self, d: i32) -> String {
let mut s = self.to_string();
let space = " ".repeat((d as usize) - self.len());
s.push_str(&space);
s
}
}
}
/// Question filter tool
mod filter {
use crate::cache::models::Problem;
/// Abstract query filter
///
/// ```sh
/// -q, --query <query> Fliter questions by conditions:
/// Uppercase means negative
/// e = easy E = m+h
/// m = medium M = e+h
/// h = hard H = e+m
/// d = done D = not done
/// l = locked L = not locked
/// s = starred S = not starred
/// ```
pub fn filter(ps: &mut Vec<Problem>, query: String) {
for p in query.chars() {
match p {
'l' => ps.retain(|x| x.locked),
'L' => ps.retain(|x| !x.locked),
's' => ps.retain(|x| x.starred),
'S' => ps.retain(|x| !x.starred),
'e' => ps.retain(|x| x.level == 1),
'E' => ps.retain(|x| x.level != 1),
'm' => ps.retain(|x| x.level == 2),
'M' => ps.retain(|x| x.level != 2),
'h' => ps.retain(|x| x.level == 3),
'H' => ps.retain(|x| x.level != 3),
'd' => ps.retain(|x| x.status == "ac"),
'D' => ps.retain(|x| x.status != "ac"),
_ => {}
}
}
}
/// Squash questions and ids
pub fn squash(ps: &mut Vec<Problem>, ids: Vec<String>) -> Result<(), crate::Error> {
use std::collections::HashMap;
let mut map: HashMap<String, bool> = HashMap::new();
ids.iter().for_each(|x| {
map.insert(x.to_string(), true).unwrap_or_default();
});
ps.retain(|x| map.get(&x.id.to_string()).is_some());
Ok(())
}
}
/// Render html to command-line
mod html {
// use crate::Error;
use colored::{Color, Colorize};
use escaper::decode_html;
use regex::Regex;
pub enum Token {
Plain(String),
Bold(String),
Sup(String),
Sub(String),
Font((String, Color)),
Eof(String),
}
/// Html render plugin
pub trait HTML {
fn ser(&self) -> Vec<Token>;
fn render(&self) -> String;
}
pub fn superscript(n: u8) -> String {
match n {
0 => "⁰".to_string(),
1 => "¹".to_string(),
2 => "²".to_string(),
3 => "³".to_string(),
4 => "⁴".to_string(),
5 => "⁵".to_string(),
6 => "⁶".to_string(),
7 => "⁷".to_string(),
8 => "⁸".to_string(),
9 => "⁹".to_string(),
x if x > 10 => (superscript(n / 10).parse().unwrap_or(0)
+ superscript(n % 10).parse().unwrap_or(0))
.to_string(),
_ => n.to_string(),
}
}
pub fn subscript(n: u8) -> String {
match n {
x if x >= 10 => (subscript(n / 10).parse().unwrap_or(0)
+ subscript(n % 10).parse().unwrap_or(0))
.to_string(),
0 => "₀".to_string(),
1 => "₁".to_string(),
2 => "₂".to_string(),
3 => "₃".to_string(),
4 => "₄".to_string(),
5 => "₅".to_string(),
6 => "₆".to_string(),
7 => "₇".to_string(),
8 => "₈".to_string(),
9 => "₉".to_string(),
_ => n.to_string(),
}
}
impl HTML for String {
fn ser(&self) -> Vec<Token> {
// empty tags
let tks = self.to_string();
let res: Vec<Token>;
// styled
{
let mut ptr = 0;
let mut output = vec![];
let mut bold = false;
let mut sup = false;
let mut sub = false;
let mut color: Option<Color> = None;
// TODO: check how to make this `unwrap` more flexible..
//
// or looks better.
//
// or do some handwrite matching.
let re_color = Regex::new(r#"color=['"]([^'"]+)"#).unwrap();
for (i, e) in tks.chars().enumerate() {
match e {
'<' => {
if bold {
output.push(Token::Bold(tks[ptr..i].to_string()));
bold = false;
} else if sup {
output.push(Token::Sup(tks[ptr..i].to_string()));
sup = false;
} else if sub {
output.push(Token::Sub(tks[ptr..i].to_string()));
sub = false;
} else if color.is_some() {
output.push(Token::Font((tks[ptr..i].to_string(), color.unwrap())));
color = None;
} else {
output.push(Token::Plain(tks[ptr..i].to_string()));
}
ptr = i;
}
'>' => {
match &tks[i - 1..i] {
"-" => continue,
_ => match &tks[(ptr + 1)..i] {
"b" | "strong" => bold = true,
"sup" => sup = true,
"sub" => sub = true,
s if s.starts_with("font") => {
color = re_color
.captures(s)
.and_then(|caps| caps.get(1))
.and_then(|cap| cap.as_str().parse().ok());
}
_ => {}
},
}
ptr = i + 1;
}
_ => {}
}
}
output.push(Token::Eof(tks[ptr..tks.len()].to_string()));
res = output;
}
res
}
fn render(&self) -> String {
let ts = self.ser();
let mut tks: Vec<String> = vec![];
for i in ts {
match i {
Token::Plain(s) => tks.push(s.normal().to_string()),
Token::Bold(s) => {
if s.contains("Example") {
let mut br = "-".repeat(50).dimmed().to_string();
br.push_str("\n\n");
tks.push(br);
} else if s.contains("Note") {
let mut br = "* ".repeat(25).dimmed().to_string();
br.push_str("\n\n");
tks.push(br);
}
tks.push(s.bold().to_string());
}
Token::Sup(s) => tks.push(match s.parse::<u8>() {
Ok(n) => superscript(n),
_ => s,
}),
Token::Sub(s) => tks.push(match s.parse::<u8>() {
Ok(n) => subscript(n),
_ => s,
}),
Token::Font((s, color)) => tks.push(s.color(color).to_string()),
Token::Eof(s) => tks.push(s.normal().to_string()),
}
}
// post replace
let tks = tks.join("");
decode_html(&tks).unwrap_or(tks)
}
}
}
mod file {
/// Convert file suffix from language type
pub fn suffix(l: &str) -> Result<&'static str, crate::Error> {
match l {
"bash" => Ok("sh"),
"c" => Ok("c"),
"cpp" => Ok("cpp"),
"csharp" => Ok("cs"),
"golang" => Ok("go"),
"java" => Ok("java"),
"javascript" => Ok("js"),
"kotlin" => Ok("kt"),
"mysql" => Ok("sql"),
"php" => Ok("php"),
"python" => Ok("py"),
"python3" => Ok("py"),
"ruby" => Ok("rb"),
"rust" => Ok("rs"),
"scala" => Ok("scala"),
"swift" => Ok("swift"),
_ => Ok("c"),
}
}
use crate::cache::models::Problem;
/// Generate code path by fid
pub fn code_path(target: &Problem, l: Option<String>) -> Result<String, crate::Error> {
let conf = crate::cfg::locate()?;
let mut lang = conf.code.lang;
if l.is_some() {
lang = l?;
}
let mut path = format!(
"{}/{}.{}",
conf.storage.code()?,
conf.code.pick,
suffix(&lang)?,
);
path = path.replace("${fid}", &target.fid.to_string());
path = path.replace("${slug}", &target.slug.to_string());
Ok(path)
}
/// Load python scripts
pub fn load_script(module: &str) -> Result<String, crate::Error> {
use std::fs::File;
use std::io::Read;
let conf = crate::cfg::locate()?;
let mut script = "".to_string();
File::open(format!("{}/{}.py", conf.storage.scripts()?, module))?
.read_to_string(&mut script)?;
Ok(script)
}
}