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
|
//! This module implements the serialisation of derivations into the
//! [ATerm][] format used by C++ Nix.
//!
//! [ATerm]: http://program-transformation.org/Tools/ATermFormat.html
use crate::output::Output;
use crate::string_escape::escape_string;
use std::collections::BTreeSet;
use std::{collections::BTreeMap, fmt, fmt::Write};
pub const DERIVATION_PREFIX: &str = "Derive";
pub const PAREN_OPEN: char = '(';
pub const PAREN_CLOSE: char = ')';
pub const BRACKET_OPEN: char = '[';
pub const BRACKET_CLOSE: char = ']';
pub const COMMA: char = ',';
pub const QUOTE: char = '"';
fn write_array_elements(
writer: &mut impl Write,
quote: bool,
open: &str,
closing: &str,
elements: Vec<&str>,
) -> Result<(), fmt::Error> {
writer.write_str(open)?;
for (index, element) in elements.iter().enumerate() {
if index > 0 {
writer.write_char(COMMA)?;
}
if quote {
writer.write_char(QUOTE)?;
}
writer.write_str(element)?;
if quote {
writer.write_char(QUOTE)?;
}
}
writer.write_str(closing)?;
Ok(())
}
pub fn write_outputs(
writer: &mut impl Write,
outputs: &BTreeMap<String, Output>,
) -> Result<(), fmt::Error> {
writer.write_char(BRACKET_OPEN)?;
for (ii, (output_name, output)) in outputs.iter().enumerate() {
if ii > 0 {
writer.write_char(COMMA)?;
}
let mut elements: Vec<&str> = vec![output_name, &output.path];
match &output.hash {
Some(hash) => {
elements.push(&hash.algo);
elements.push(&hash.digest);
}
None => {
elements.push("");
elements.push("");
}
}
write_array_elements(
writer,
true,
&PAREN_OPEN.to_string(),
&PAREN_CLOSE.to_string(),
elements,
)?
}
writer.write_char(BRACKET_CLOSE)?;
Ok(())
}
pub fn write_input_derivations(
writer: &mut impl Write,
input_derivations: &BTreeMap<String, BTreeSet<String>>,
) -> Result<(), fmt::Error> {
writer.write_char(COMMA)?;
writer.write_char(BRACKET_OPEN)?;
for (ii, (input_derivation_path, input_derivation)) in input_derivations.iter().enumerate() {
if ii > 0 {
writer.write_char(COMMA)?;
}
writer.write_char(PAREN_OPEN)?;
writer.write_char(QUOTE)?;
writer.write_str(input_derivation_path.as_str())?;
writer.write_char(QUOTE)?;
writer.write_char(COMMA)?;
write_array_elements(
writer,
true,
&BRACKET_OPEN.to_string(),
&BRACKET_CLOSE.to_string(),
input_derivation.iter().map(|s| &**s).collect(),
)?;
writer.write_char(PAREN_CLOSE)?;
}
writer.write_char(BRACKET_CLOSE)?;
Ok(())
}
pub fn write_input_sources(
writer: &mut impl Write,
input_sources: &BTreeSet<String>,
) -> Result<(), fmt::Error> {
writer.write_char(COMMA)?;
write_array_elements(
writer,
true,
&BRACKET_OPEN.to_string(),
&BRACKET_CLOSE.to_string(),
input_sources.iter().map(|s| &**s).collect(),
)?;
Ok(())
}
pub fn write_system(writer: &mut impl Write, platform: &str) -> Result<(), fmt::Error> {
writer.write_char(COMMA)?;
writer.write_str(escape_string(platform).as_str())?;
Ok(())
}
pub fn write_builder(writer: &mut impl Write, builder: &str) -> Result<(), fmt::Error> {
writer.write_char(COMMA)?;
writer.write_str(escape_string(builder).as_str())?;
Ok(())
}
pub fn write_arguments(writer: &mut impl Write, arguments: &[String]) -> Result<(), fmt::Error> {
writer.write_char(COMMA)?;
write_array_elements(
writer,
true,
&BRACKET_OPEN.to_string(),
&BRACKET_CLOSE.to_string(),
arguments.iter().map(|s| &**s).collect(),
)?;
Ok(())
}
pub fn write_enviroment(
writer: &mut impl Write,
environment: &BTreeMap<String, String>,
) -> Result<(), fmt::Error> {
writer.write_char(COMMA)?;
writer.write_char(BRACKET_OPEN)?;
for (ii, (key, environment)) in environment.iter().enumerate() {
if ii > 0 {
writer.write_char(COMMA)?;
}
write_array_elements(
writer,
false,
&PAREN_OPEN.to_string(),
&PAREN_CLOSE.to_string(),
vec![&escape_string(key), &escape_string(environment)],
)?;
}
writer.write_char(BRACKET_CLOSE)?;
Ok(())
}
|
