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
use proc_macro2::Literal;
use quote::{ToTokens, TokenStreamExt};
use syn::{parse::Parse, LitStr, Result};
fn name2ansi(name: &str) -> Option<&'static str> {
Some(match name {
"black" => "\x1b[0;34;30m",
"red" => "\x1b[0;34;31m",
"green" => "\x1b[0;34;32m",
"yellow" => "\x1b[0;34;33m",
"blue" => "\x1b[0;34;34m",
"magenta" => "\x1b[0;34;35m",
"cyan" => "\x1b[0;34;36m",
"white" => "\x1b[0;34;37m",
"default" => "\x1b[0;34;39m",
"bold_black" => "\x1b[1;34;30m",
"bold_red" => "\x1b[1;34;31m",
"bold_green" => "\x1b[1;34;32m",
"bold_yellow" => "\x1b[1;34;33m",
"bold_blue" => "\x1b[1;34;34m",
"bold_magenta" => "\x1b[1;34;35m",
"bold_cyan" => "\x1b[1;34;36m",
"bold_white" => "\x1b[1;34;37m",
"bold_default" => "\x1b[1;34;39m",
"on_black_bold" => "\x1b[1;34;40m",
"on_red_bold" => "\x1b[1;34;41m",
"on_green_bold" => "\x1b[1;34;42m",
"on_yellow_bold" => "\x1b[1;34;43m",
"on_blue_bold" => "\x1b[1;34;44m",
"on_magenta_bold" => "\x1b[1;44;35m",
"on_cyan_bold" => "\x1b[1;34;46m",
"on_white_bold" => "\x1b[1;34;47m",
"on_default_bold" => "\x1b[1;34;49m",
"on_black" => "\x1b[0;34;40m",
"on_red" => "\x1b[0;34;41m",
"on_green" => "\x1b[0;34;42m",
"on_yellow" => "\x1b[0;34;43m",
"on_blue" => "\x1b[0;34;44m",
"on_magenta" => "\x1b[0;44;35m",
"on_cyan" => "\x1b[0;34;46m",
"on_white" => "\x1b[0;34;47m",
"on_default" => "\x1b[0;34;49m",
"reset" => "\x1b[0m",
"dim" => "\x1b[2m",
"italic" => "\x1b[3m",
"underline" => "\x1b[24m",
"blinking" => "\x1b[5m",
"hide" => "\x1b[8m",
"strike" => "\x1b[9m",
"bold" => "\x1b[1m",
_ => return None,
})
}
pub struct CFStr(String);
impl Parse for CFStr {
fn parse(stream: syn::parse::ParseStream) -> Result<Self> {
let input = stream.parse::<LitStr>()?.value();
let mut chars = input.chars();
let mut temp = String::new();
let mut out = String::new();
while let Some(ch) = chars.next() {
match ch {
'{' => {
match chars.next() {
Some('{') => {
out.push('{');
continue;
}
Some('}') => {
out.push('{');
out.push('}');
continue;
}
Some(ch) => temp.push(ch),
None => return Err(stream.error("unexpected eof")),
}
'outer: for ch in chars.by_ref() {
match ch {
'}' => {
if let Some(a) = name2ansi(&temp) {
out.push_str(a);
temp.clear();
break;
} else if let Some((b, a)) = temp
.split_once(':')
.map(|(a, b)| (a.to_string(), b.to_string()))
{
let mut reset = false;
for a in a.split(',') {
if let Some(ansi) = name2ansi(a) {
if !reset {
reset = true;
if a != "reset" {
out.push_str(name2ansi("reset").unwrap());
}
}
out.push_str(ansi);
} else {
out.push('{');
out.push_str(&temp);
out.push('}');
temp.clear();
break 'outer;
}
}
out.push('{');
out.push_str(&b);
out.push('}');
temp.clear();
out.push_str(name2ansi("reset").unwrap());
break;
}
out.push('{');
out.push_str(&temp);
out.push('}');
temp.clear();
break;
}
t => temp.push(t),
}
}
}
'}' => match chars.next() {
Some('}') => {
out.push('}');
continue;
}
_ => return Err(stream.error("unexpected text")),
},
c => out.push(c),
}
}
Ok(Self(out))
}
}
impl ToTokens for CFStr {
fn to_tokens(&self, tokens: &mut proc_macro2::TokenStream) {
tokens.append(Literal::string(&self.0));
}
}