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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
#[macro_use]
extern crate clap;
#[macro_use]
extern crate lazy_static;
use std::env;
use std::ffi::OsString;
use std::fs::{self, File};
use std::io::{self, Read, Write};
use std::path::Path;
use std::process;
use clap::Shell;
use app::{RGArg, RGArgKind};
#[allow(dead_code)]
#[path = "src/app.rs"]
mod app;
fn main() {
// If our version of Rust has runtime SIMD detection, then set a cfg so
// we know we can test for it. We use this when generating ripgrep's
// --version output.
let version = rustc_version();
let parsed = match Version::parse(&version) {
Ok(parsed) => parsed,
Err(err) => {
eprintln!("failed to parse `rustc --version`: {}", err);
return;
}
};
let minimum = Version { major: 1, minor: 27, patch: 0 };
if version.contains("nightly") || parsed >= minimum {
println!("cargo:rustc-cfg=ripgrep_runtime_cpu");
}
// OUT_DIR is set by Cargo and it's where any additional build artifacts
// are written.
let outdir = match env::var_os("OUT_DIR") {
Some(outdir) => outdir,
None => {
eprintln!(
"OUT_DIR environment variable not defined. \
Please file a bug: \
https://github.com/BurntSushi/ripgrep/issues/new");
process::exit(1);
}
};
fs::create_dir_all(&outdir).unwrap();
let stamp_path = Path::new(&outdir).join("ripgrep-stamp");
if let Err(err) = File::create(&stamp_path) {
panic!("failed to write {}: {}", stamp_path.display(), err);
}
if let Err(err) = generate_man_page(&outdir) {
eprintln!("failed to generate man page: {}", err);
}
// Use clap to build completion files.
let mut app = app::app();
app.gen_completions("rg", Shell::Bash, &outdir);
app.gen_completions("rg", Shell::Fish, &outdir);
app.gen_completions("rg", Shell::PowerShell, &outdir);
// Note that we do not use clap's support for zsh. Instead, zsh completions
// are manually maintained in `complete/_rg`.
// Make the current git hash available to the build.
if let Some(rev) = git_revision_hash() {
println!("cargo:rustc-env=RIPGREP_BUILD_GIT_HASH={}", rev);
}
}
fn git_revision_hash() -> Option<String> {
let result = process::Command::new("git")
.args(&["rev-parse", "--short=10", "HEAD"])
.output();
result.ok().and_then(|output| {
let v = String::from_utf8_lossy(&output.stdout).trim().to_string();
if v.is_empty() {
None
} else {
Some(v)
}
})
}
fn generate_man_page<P: AsRef<Path>>(outdir: P) -> io::Result<()> {
// If asciidoc isn't installed, then don't do anything.
if let Err(err) = process::Command::new("a2x").output() {
eprintln!("Could not run 'a2x' binary, skipping man page generation.");
eprintln!("Error from running 'a2x': {}", err);
return Ok(());
}
// 1. Read asciidoc template.
// 2. Interpolate template with auto-generated docs.
// 3. Save interpolation to disk.
// 4. Use a2x (part of asciidoc) to convert to man page.
let outdir = outdir.as_ref();
let cwd = env::current_dir()?;
let tpl_path = cwd.join("doc").join("rg.1.txt.tpl");
let txt_path = outdir.join("rg.1.txt");
let mut tpl = String::new();
File::open(&tpl_path)?.read_to_string(&mut tpl)?;
tpl = tpl.replace("{OPTIONS}", &formatted_options()?);
let githash = git_revision_hash();
let githash = githash.as_ref().map(|x| &**x);
tpl = tpl.replace("{VERSION}", &app::long_version(githash));
File::create(&txt_path)?.write_all(tpl.as_bytes())?;
let result = process::Command::new("a2x")
.arg("--no-xmllint")
.arg("--doctype").arg("manpage")
.arg("--format").arg("manpage")
.arg(&txt_path)
.spawn()?
.wait()?;
if !result.success() {
let msg = format!("'a2x' failed with exit code {:?}", result.code());
return Err(ioerr(msg));
}
Ok(())
}
fn formatted_options() -> io::Result<String> {
let mut args = app::all_args_and_flags();
args.sort_by(|x1, x2| x1.name.cmp(&x2.name));
let mut formatted = vec![];
for arg in args {
if arg.hidden {
continue;
}
// ripgrep only has two positional arguments, and probably will only
// ever have two positional arguments, so we just hardcode them into
// the template.
if let app::RGArgKind::Positional{..} = arg.kind {
continue;
}
formatted.push(formatted_arg(&arg)?);
}
Ok(formatted.join("\n\n"))
}
fn formatted_arg(arg: &RGArg) -> io::Result<String> {
match arg.kind {
RGArgKind::Positional{..} => panic!("unexpected positional argument"),
RGArgKind::Switch { long, short, multiple } => {
let mut out = vec![];
let mut header = format!("--{}", long);
if let Some(short) = short {
header = format!("-{}, {}", short, header);
}
if multiple {
header = format!("*{}* ...::", header);
} else {
header = format!("*{}*::", header);
}
writeln!(out, "{}", header)?;
writeln!(out, "{}", formatted_doc_txt(arg)?)?;
Ok(String::from_utf8(out).unwrap())
}
RGArgKind::Flag { long, short, value_name, multiple, .. } => {
let mut out = vec![];
let mut header = format!("--{}", long);
if let Some(short) = short {
header = format!("-{}, {}", short, header);
}
if multiple {
header = format!("*{}* _{}_ ...::", header, value_name);
} else {
header = format!("*{}* _{}_::", header, value_name);
}
writeln!(out, "{}", header)?;
writeln!(out, "{}", formatted_doc_txt(arg)?)?;
Ok(String::from_utf8(out).unwrap())
}
}
}
fn formatted_doc_txt(arg: &RGArg) -> io::Result<String> {
let paragraphs: Vec<&str> = arg.doc_long.split("\n\n").collect();
if paragraphs.is_empty() {
return Err(ioerr(format!("missing docs for --{}", arg.name)));
}
let first = format!(" {}", paragraphs[0].replace("\n", "\n "));
if paragraphs.len() == 1 {
return Ok(first);
}
Ok(format!("{}\n+\n{}", first, paragraphs[1..].join("\n+\n")))
}
fn ioerr(msg: String) -> io::Error {
io::Error::new(io::ErrorKind::Other, msg)
}
fn rustc_version() -> String {
let rustc = env::var_os("RUSTC").unwrap_or(OsString::from("rustc"));
let output = process::Command::new(&rustc)
.arg("--version")
.output()
.unwrap()
.stdout;
String::from_utf8(output).unwrap()
}
#[derive(Clone, Copy, Debug, Eq, PartialEq, PartialOrd, Ord)]
struct Version {
major: u32,
minor: u32,
patch: u32,
}
impl Version {
fn parse(mut s: &str) -> Result<Version, String> {
if !s.starts_with("rustc ") {
return Err(format!("unrecognized version string: {}", s));
}
s = &s["rustc ".len()..];
let parts: Vec<&str> = s.split("."
|