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
|
/*
* Copyright 2016-2017 Doug Goldstein <cardoe@cardoe.com>
*
* Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
* http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
* <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
* option. This file may not be copied, modified, or distributed
* except according to those terms.
*/
extern crate cargo;
extern crate rustc_serialize;
extern crate time;
use cargo::{Config, CliResult};
use cargo::core::{Package, PackageSet, Resolve, Workspace};
use cargo::core::registry::PackageRegistry;
use cargo::core::resolver::Method;
use cargo::ops;
use cargo::util::{human, important_paths, CargoResult};
use std::env;
use std::error::Error;
use std::fs::OpenOptions;
use std::io::Write;
use std::path::PathBuf;
/// Finds the root Cargo.toml of the workspace
fn workspace(config: &Config, manifest_path: Option<String>) -> CargoResult<Workspace> {
let root = important_paths::find_root_manifest_for_wd(manifest_path, config.cwd())?;
Workspace::new(&root, config)
}
/// Generates a package registry by using the Cargo.lock or creating one as necessary
fn registry<'a>(config: &'a Config, package: &Package) -> CargoResult<PackageRegistry<'a>> {
let mut registry = PackageRegistry::new(config)?;
registry
.add_sources(&[package.package_id().source_id().clone()])?;
Ok(registry)
}
/// Resolve the packages necessary for the workspace
fn resolve<'a>(registry: &mut PackageRegistry,
workspace: &'a Workspace)
-> CargoResult<(PackageSet<'a>, Resolve)> {
// resolve our dependencies
let (packages, resolve) = ops::resolve_ws(workspace)?;
// resolve with all features set so we ensure we get all of the depends downloaded
let resolve = ops::resolve_with_previous(registry,
workspace,
/* resolve it all */
Method::Everything,
/* previous */
Some(&resolve),
/* don't avoid any */
None,
/* specs */
&[])?;
Ok((packages, resolve))
}
#[derive(RustcDecodable)]
struct Options {
flag_verbose: u32,
flag_quiet: Option<bool>,
}
const USAGE: &'static str = r#"
Create an ebuild for a project
Usage:
cargo ebuild [options]
Options:
-h, --help Print this message
-v, --verbose Use verbose output
-q, --quiet No output printed to stdout
"#;
fn main() {
let config = Config::default().unwrap();
let args = env::args().collect::<Vec<_>>();
let result = cargo::call_main_without_stdin(real_main, &config, USAGE, &args, false);
if let Err(e) = result {
cargo::handle_cli_error(e, &mut *config.shell());
}
}
fn real_main(options: Options, config: &Config) -> CliResult {
config
.configure(options.flag_verbose,
options.flag_quiet,
/* color */
&None,
/* frozen */
false,
/* locked */
false)?;
// Load the workspace and current package
let workspace = workspace(config, None)?;
let package = workspace.current()?;
// Resolve all dependencies (generate or use Cargo.lock as necessary)
let mut registry = registry(config, &package)?;
let resolve = resolve(&mut registry, &workspace)?;
// build the crates the package needs
let mut crates = resolve
.1
.iter()
.map(|pkg| format!("{}-{}\n", pkg.name(), pkg.version()))
.collect::<Vec<String>>();
// sort the crates
crates.sort();
// root package metadata
let metadata = package.manifest().metadata();
// package description
let desc = metadata
.description
.as_ref()
.cloned()
.unwrap_or_else(|| String::from(package.name()));
// package homepage
let homepage =
metadata.homepage.as_ref().cloned().unwrap_or(metadata
.repository
.as_ref()
.cloned()
.unwrap_or_else(|| String::from("")));
let license = metadata
.license
.as_ref()
.cloned()
.unwrap_or_else(|| String::from("unknown license"));
// build up the ebuild path
let ebuild_path = PathBuf::from(format!("{}-{}.ebuild", package.name(), package.version()));
// Open the file where we'll write the ebuild
let mut file =
try!(OpenOptions::new()
.write(true)
.create(true)
.truncate(true)
.open(&ebuild_path)
.map_err(|err| human(format!("failed to create ebuild: {}", err.description()))));
// write the contents out
try!(write!(file,
include_str!("ebuild.template"),
description = desc.trim(),
homepage = homepage.trim(),
license = license.trim(),
crates = crates.join(""),
cargo_ebuild_ver = env!("CARGO_PKG_VERSION"),
this_year = 1900 + time::now().tm_year,
)
.map_err(|err| {
human(format!("unable to write ebuild to disk: {}",
err.description()))
}));
println!("Wrote: {}", ebuild_path.display());
Ok(())
}
|
GitWeb