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
|
use std::env;
use std::ffi::OsString;
use std::path::PathBuf;
use structopt::StructOpt;
#[derive(StructOpt, Debug, PartialEq, Eq, Clone)]
#[structopt(author, about)]
pub struct Args {
/// Cause environment variables, including those with null values, to override macro
/// assignments within makefiles.
#[structopt(short, long)]
pub environment_overrides: bool,
/// Specify a different makefile (or '-' for standard input).
///
/// The argument makefile is a pathname of a description file, which is also referred
/// to as the makefile. A pathname of '-' shall denote the standard input. There can
/// be multiple instances of this option, and they shall be processed in the order
/// specified. The effect of specifying the same option-argument more than once is
/// unspecified.
#[structopt(short = "f", long = "file", visible_alias = "makefile", number_of_values = 1, parse(from_os_str))]
pub makefile: Vec<PathBuf>,
/// Ignore error codes returned by invoked commands.
///
/// This mode is the same as if the special target .IGNORE were specified without
/// prerequisites.
#[structopt(short, long)]
pub ignore_errors: bool,
/// Continue to update other targets that do not depend on the current target if a
/// non-ignored error occurs while executing the commands to bring a target
/// up-to-date.
#[structopt(short, long)]
pub keep_going: bool,
/// Write commands that would be executed on standard output, but do not execute them
/// (but execute lines starting with '+').
///
/// However, lines with a <plus-sign> ( '+' ) prefix shall be executed. In this mode,
/// lines with an at-sign ( '@' ) character prefix shall be written to standard
/// output.
#[structopt(short = "n", long, visible_alias = "just-print", visible_alias = "recon")]
pub dry_run: bool,
/// Write to standard output the complete set of macro definitions and target
/// descriptions.
///
/// The output format is unspecified.
#[structopt(short, long, visible_alias = "print-data-base")]
pub print_everything: bool,
/// Return a zero exit value if the target file is up-to-date; otherwise, return an
/// exit value of 1.
///
/// Targets shall not be updated if this option is specified. However, a makefile
/// command line (associated with the targets) with a <plus-sign> ( '+' ) prefix
/// shall be executed.
#[structopt(short, long)]
pub question: bool,
/// Clear the suffix list and do not use the built-in rules.
#[structopt(short = "r", long)]
pub no_builtin_rules: bool,
/// Terminate make if an error occurs while executing the commands to bring a target
/// up-to-date (default behavior, required by POSIX to be also a flag for some
/// reason).
///
/// This shall be the default and the opposite of -k.
#[structopt(short = "S", long, visible_alias = "stop", hidden = true, overrides_with="keep-going")]
pub no_keep_going: bool,
/// Do not write makefile command lines or touch messages to standard output before
/// executing.
///
/// This mode shall be the same as if the special target .SILENT were specified
/// without prerequisites.
#[structopt(short, long, visible_alias = "quiet")]
pub silent: bool,
/// Update the modification time of each target as though a touch target had been
/// executed.
///
/// Targets that have prerequisites but no commands, or that are already up-to-date,
/// shall not be touched in this manner. Write messages to standard output for each
/// target file indicating the name of the file and that it was touched. Normally,
/// the makefile command lines associated with each target are not executed. However,
/// a command line with a <plus-sign> ( '+' ) prefix shall be executed.
#[structopt(short, long)]
pub touch: bool,
/// Target names or macro definitions.
///
/// If no target is specified, while make is processing the makefiles, the first
/// target that make encounters that is not a special target or an inference rule
/// shall be used.
pub targets_or_macros: Vec<String>,
}
impl Args {
pub fn from_env_and_args() -> Args {
// POSIX spec says "Any options specified in the MAKEFLAGS environment variable
// shall be evaluated before any options specified on the make utility command
// line."
// TODO make sure only flags show up in MAKEFLAGS (i.e. not -f or other stuff)
// TODO accept "option letters without the leading <hyphen-minus> characters"
let env_makeflags = env::var("MAKEFLAGS").unwrap_or_default();
let env_makeflags = env_makeflags.split_whitespace()
.map(|x| OsString::from(x));
let mut args = env::args_os();
// per the structopt docs, the first argument will be used as the binary name,
// so we need to make sure it goes in before MAKEFLAGS
let arg0 = args.next().unwrap_or_else(|| env!("CARGO_PKG_NAME").into());
let args = ::std::iter::once(arg0)
.chain(env_makeflags.into_iter())
.chain(args);
Args::from_iter(args)
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn no_args() {
let args: Vec<OsString> = vec!["makers".into()];
let args = Args::from_iter(args.into_iter());
assert_eq!(args, Args {
environment_overrides: false,
makefile: vec![],
ignore_errors: false,
keep_going: false,
dry_run: false,
print_everything: false,
question: false,
no_builtin_rules: false,
no_keep_going: false,
silent: false,
touch: false,
targets_or_macros: vec![],
});
}
#[test]
fn kitchen_sink_args() {
let args = "makers -eiknpqrstf foo -f bruh bar baz=yeet";
let args = Args::from_iter(args.split_whitespace());
assert_eq!(args, Args {
environment_overrides: true,
makefile: vec!["foo".into(), "bruh".into()],
ignore_errors: true,
keep_going: true,
dry_run: true,
print_everything: true,
question: true,
no_builtin_rules: true,
no_keep_going: false,
silent: true,
touch: true,
targets_or_macros: vec!["bar".into(), "baz=yeet".into()],
});
}
#[test]
fn keep_going_wrestling() {
let args = "makers -kSkSkSSSkSkkSk -k -S -k -k -S -S -k";
let args = Args::from_iter(args.split_whitespace());
assert_eq!(args, Args {
environment_overrides: false,
makefile: vec![],
ignore_errors: false,
keep_going: true,
dry_run: false,
print_everything: false,
question: false,
no_builtin_rules: false,
no_keep_going: false,
silent: false,
touch: false,
targets_or_macros: vec![],
});
}
// TODO test MAKEFLAGS
}
|
