]>
Commit | Line | Data |
---|---|---|
1 | use std::collections::HashMap; | |
2 | ||
3 | use winnow::prelude::*; | |
4 | use winnow::{ | |
5 | ascii::{alphanumeric1 as alphanumeric, space0 as space}, | |
6 | combinator::opt, | |
7 | combinator::repeat, | |
8 | combinator::{delimited, terminated}, | |
9 | token::{take_till0, take_while}, | |
10 | }; | |
11 | ||
12 | pub type Stream<'i> = &'i str; | |
13 | ||
14 | pub fn categories(input: Stream<'_>) -> IResult<Stream<'_>, HashMap<&str, HashMap<&str, &str>>> { | |
15 | repeat(0.., category_and_keys).parse_next(input) | |
16 | } | |
17 | ||
18 | fn category_and_keys(i: Stream<'_>) -> IResult<Stream<'_>, (&str, HashMap<&str, &str>)> { | |
19 | (category, keys_and_values).parse_next(i) | |
20 | } | |
21 | ||
22 | fn category(i: Stream<'_>) -> IResult<Stream<'_>, &str> { | |
23 | terminated( | |
24 | delimited('[', take_while(0.., |c| c != ']'), ']'), | |
25 | opt(take_while(1.., " \r\n")), | |
26 | ) | |
27 | .parse_next(i) | |
28 | } | |
29 | ||
30 | fn keys_and_values(input: Stream<'_>) -> IResult<Stream<'_>, HashMap<&str, &str>> { | |
31 | repeat(0.., key_value).parse_next(input) | |
32 | } | |
33 | ||
34 | fn key_value(i: Stream<'_>) -> IResult<Stream<'_>, (&str, &str)> { | |
35 | let (i, key) = alphanumeric(i)?; | |
36 | let (i, _) = (opt(space), "=", opt(space)).parse_next(i)?; | |
37 | let (i, val) = take_till0(is_line_ending_or_comment).parse_next(i)?; | |
38 | let (i, _) = opt(space).parse_next(i)?; | |
39 | let (i, _) = opt((";", not_line_ending)).parse_next(i)?; | |
40 | let (i, _) = opt(space_or_line_ending).parse_next(i)?; | |
41 | ||
42 | Ok((i, (key, val))) | |
43 | } | |
44 | ||
45 | fn is_line_ending_or_comment(chr: char) -> bool { | |
46 | chr == ';' || chr == '\n' | |
47 | } | |
48 | ||
49 | fn not_line_ending(i: Stream<'_>) -> IResult<Stream<'_>, &str> { | |
50 | take_while(0.., |c| c != '\r' && c != '\n').parse_next(i) | |
51 | } | |
52 | ||
53 | fn space_or_line_ending(i: Stream<'_>) -> IResult<Stream<'_>, &str> { | |
54 | take_while(1.., " \r\n").parse_next(i) | |
55 | } | |
56 | ||
57 | #[test] | |
58 | fn parse_category_test() { | |
59 | let ini_file = "[category] | |
60 | ||
61 | parameter=value | |
62 | key = value2"; | |
63 | ||
64 | let ini_without_category = "parameter=value | |
65 | key = value2"; | |
66 | ||
67 | let res = category(ini_file); | |
68 | println!("{:?}", res); | |
69 | match res { | |
70 | Ok((i, o)) => println!("i: {} | o: {:?}", i, o), | |
71 | _ => println!("error"), | |
72 | } | |
73 | ||
74 | assert_eq!(res, Ok((ini_without_category, "category"))); | |
75 | } | |
76 | ||
77 | #[test] | |
78 | fn parse_key_value_test() { | |
79 | let ini_file = "parameter=value | |
80 | key = value2"; | |
81 | ||
82 | let ini_without_key_value = "key = value2"; | |
83 | ||
84 | let res = key_value(ini_file); | |
85 | println!("{:?}", res); | |
86 | match res { | |
87 | Ok((i, (o1, o2))) => println!("i: {} | o: ({:?},{:?})", i, o1, o2), | |
88 | _ => println!("error"), | |
89 | } | |
90 | ||
91 | assert_eq!(res, Ok((ini_without_key_value, ("parameter", "value")))); | |
92 | } | |
93 | ||
94 | #[test] | |
95 | fn parse_key_value_with_space_test() { | |
96 | let ini_file = "parameter = value | |
97 | key = value2"; | |
98 | ||
99 | let ini_without_key_value = "key = value2"; | |
100 | ||
101 | let res = key_value(ini_file); | |
102 | println!("{:?}", res); | |
103 | match res { | |
104 | Ok((i, (o1, o2))) => println!("i: {} | o: ({:?},{:?})", i, o1, o2), | |
105 | _ => println!("error"), | |
106 | } | |
107 | ||
108 | assert_eq!(res, Ok((ini_without_key_value, ("parameter", "value")))); | |
109 | } | |
110 | ||
111 | #[test] | |
112 | fn parse_key_value_with_comment_test() { | |
113 | let ini_file = "parameter=value;abc | |
114 | key = value2"; | |
115 | ||
116 | let ini_without_key_value = "key = value2"; | |
117 | ||
118 | let res = key_value(ini_file); | |
119 | println!("{:?}", res); | |
120 | match res { | |
121 | Ok((i, (o1, o2))) => println!("i: {} | o: ({:?},{:?})", i, o1, o2), | |
122 | _ => println!("error"), | |
123 | } | |
124 | ||
125 | assert_eq!(res, Ok((ini_without_key_value, ("parameter", "value")))); | |
126 | } | |
127 | ||
128 | #[test] | |
129 | fn parse_multiple_keys_and_values_test() { | |
130 | let ini_file = "parameter=value;abc | |
131 | ||
132 | key = value2 | |
133 | ||
134 | [category]"; | |
135 | ||
136 | let ini_without_key_value = "[category]"; | |
137 | ||
138 | let res = keys_and_values(ini_file); | |
139 | println!("{:?}", res); | |
140 | match res { | |
141 | Ok((i, ref o)) => println!("i: {} | o: {:?}", i, o), | |
142 | _ => println!("error"), | |
143 | } | |
144 | ||
145 | let mut expected: HashMap<&str, &str> = HashMap::new(); | |
146 | expected.insert("parameter", "value"); | |
147 | expected.insert("key", "value2"); | |
148 | assert_eq!(res, Ok((ini_without_key_value, expected))); | |
149 | } | |
150 | ||
151 | #[test] | |
152 | fn parse_category_then_multiple_keys_and_values_test() { | |
153 | //FIXME: there can be an empty line or a comment line after a category | |
154 | let ini_file = "[abcd] | |
155 | parameter=value;abc | |
156 | ||
157 | key = value2 | |
158 | ||
159 | [category]"; | |
160 | ||
161 | let ini_after_parser = "[category]"; | |
162 | ||
163 | let res = category_and_keys(ini_file); | |
164 | println!("{:?}", res); | |
165 | match res { | |
166 | Ok((i, ref o)) => println!("i: {} | o: {:?}", i, o), | |
167 | _ => println!("error"), | |
168 | } | |
169 | ||
170 | let mut expected_h: HashMap<&str, &str> = HashMap::new(); | |
171 | expected_h.insert("parameter", "value"); | |
172 | expected_h.insert("key", "value2"); | |
173 | assert_eq!(res, Ok((ini_after_parser, ("abcd", expected_h)))); | |
174 | } | |
175 | ||
176 | #[test] | |
177 | fn parse_multiple_categories_test() { | |
178 | let ini_file = "[abcd] | |
179 | ||
180 | parameter=value;abc | |
181 | ||
182 | key = value2 | |
183 | ||
184 | [category] | |
185 | parameter3=value3 | |
186 | key4 = value4 | |
187 | "; | |
188 | ||
189 | let res = categories(ini_file); | |
190 | //println!("{:?}", res); | |
191 | match res { | |
192 | Ok((i, ref o)) => println!("i: {} | o: {:?}", i, o), | |
193 | _ => println!("error"), | |
194 | } | |
195 | ||
196 | let mut expected_1: HashMap<&str, &str> = HashMap::new(); | |
197 | expected_1.insert("parameter", "value"); | |
198 | expected_1.insert("key", "value2"); | |
199 | let mut expected_2: HashMap<&str, &str> = HashMap::new(); | |
200 | expected_2.insert("parameter3", "value3"); | |
201 | expected_2.insert("key4", "value4"); | |
202 | let mut expected_h: HashMap<&str, HashMap<&str, &str>> = HashMap::new(); | |
203 | expected_h.insert("abcd", expected_1); | |
204 | expected_h.insert("category", expected_2); | |
205 | assert_eq!(res, Ok(("", expected_h))); | |
206 | } |