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
|
use std::env;
use std::fmt;
use std::process::{Command, ExitStatus};
use eyre::{bail, Error};
#[cfg(feature = "full")]
use lazy_static::lazy_static;
#[cfg(feature = "full")]
use regex::Regex;
#[cfg(feature = "full")]
use super::r#macro::Set as MacroSet;
use super::target::Target;
use super::token::{Token, TokenString};
use super::Makefile;
// inspired by python's subprocess module
fn execute_command_line(
command_line: &str,
ignore_errors: bool,
#[cfg(feature = "full")] macros: &MacroSet,
) -> Result<ExitStatus, Error> {
let (program, args) = if cfg!(windows) {
let cmd = env::var("COMSPEC").unwrap_or_else(|_| "cmd.exe".into());
let args = vec!["/c", command_line];
(cmd, args)
} else {
let sh = env::var("SHELL").unwrap_or_else(|_| "/bin/sh".into());
let args = if ignore_errors {
vec!["-c", command_line]
} else {
vec!["-e", "-c", command_line]
};
(sh, args)
};
let mut command = Command::new(program);
command.args(args);
#[cfg(feature = "full")]
command.envs(macros.resolve_exports::<&[u8]>(None)?);
Ok(command.status()?)
}
#[derive(PartialEq, Eq, Clone, Debug)]
pub struct CommandLine {
execution_line: TokenString,
}
impl CommandLine {
pub const fn from(line: TokenString) -> Self {
Self {
execution_line: line,
}
}
pub fn execute(&self, file: &Makefile, target: &Target) -> eyre::Result<()> {
let is_recursive = self.execution_line.tokens().any(|x| match x {
Token::MacroExpansion { name, .. } => name == "MAKE",
_ => false,
});
log::trace!("executing {}", &self.execution_line);
let execution_line = file.expand_macros(&self.execution_line, Some(target))?;
#[cfg(feature = "full")]
{
let is_just_one_macro_expansion = self.execution_line.tokens().count() == 1
&& self.execution_line.tokens().all(|x| {
matches!(x, Token::MacroExpansion { .. } | Token::FunctionCall { .. })
});
// unfortunately, if we had a multiline macro somewhere with non-escaped newlines, now we have to run each of them as separate lines
lazy_static! {
static ref UNESCAPED_NEWLINE: Regex = #[allow(clippy::unwrap_used)]
Regex::new(r"([^\\])\n").unwrap();
}
if is_just_one_macro_expansion && UNESCAPED_NEWLINE.is_match(&execution_line) {
let lines = UNESCAPED_NEWLINE
.split(&execution_line)
.map(|x| Self::from(TokenString::text(x.trim_start())));
for line in lines {
line.execute(file, target)?;
}
return Ok(());
}
}
log::trace!("executing {}", &execution_line);
let mut ignore_errors = false;
let mut silent = false;
let mut always_execute = false;
// sometimes this is defined in macros rather than statically
let execution_line: String = {
let mut line_chars = execution_line
.chars()
.skip_while(char::is_ascii_whitespace)
.peekable();
while let Some(x) = line_chars.next_if(|x| matches!(x, '-' | '@' | '+')) {
match x {
'-' => ignore_errors = true,
'@' => silent = true,
'+' => always_execute = true,
_ => unreachable!(),
}
}
line_chars.collect()
};
let ignore_error = ignore_errors
|| file.args.ignore_errors
|| file.special_target_has_prereq(".IGNORE", &target.name);
let silent = (silent && !file.args.dry_run)
|| file.args.silent
|| file.special_target_has_prereq(".SILENT", &target.name);
if !silent {
println!("{}", execution_line);
}
let should_execute = always_execute
|| is_recursive
|| !(file.args.dry_run || file.args.question || file.args.touch);
if !should_execute {
return Ok(());
}
let return_value = execute_command_line(
&execution_line,
ignore_error,
#[cfg(feature = "full")]
&file.macros,
);
let errored = return_value.map_or(true, |status| !status.success());
if errored {
// apparently there was an error. do we care?
if !ignore_error {
bail!("error from command execution!");
}
}
Ok(())
}
}
impl fmt::Display for CommandLine {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let execution_line = format!("{}", &self.execution_line);
let execution_line = execution_line.replace("\n", "↵\n");
write!(f, "{}", execution_line)?;
Ok(())
}
}
|
