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
|
/*
* Copyright 2016-2018 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.
*/
mod metadata;
use anyhow::{format_err, Context, Result};
use cargo_lock::Lockfile;
use cargo_metadata::MetadataCommand;
use cargo_metadata::CargoOpt;
use std::collections::BTreeSet;
use std::fs::OpenOptions;
use std::io::Write;
use std::path::{Path, PathBuf};
use std::process::Command;
use metadata::EbuildConfig;
fn parse_license<'a>(lic_str: &'a str) -> Vec<&'a str> {
lic_str
.split('/')
.flat_map(|l| l.split(" OR "))
.flat_map(|l| l.split(" AND "))
.map(str::trim)
.collect()
}
fn generate_lockfile(manifest_path: Option<PathBuf>) -> Result<()> {
let cargo = std::env::var("CARGO")
.map(PathBuf::from)
.unwrap_or_else(|_| PathBuf::from("cargo"));
let mut lock_cmd = Command::new(cargo);
lock_cmd.arg("generate-lockfile");
if let Some(path) = manifest_path.as_ref() {
lock_cmd.arg("--manifest-path");
lock_cmd.arg(path.as_os_str());
}
let lock_output = lock_cmd.output()?;
if !lock_output.status.success() {
let stderr = String::from_utf8_lossy(&lock_output.stderr);
return Err(format_err!("unable to generate lockfile:\n{}", stderr));
}
Ok(())
}
pub fn gen_ebuild_data(manifest_path: Option<PathBuf>) -> Result<EbuildConfig> {
let mut cmd = MetadataCommand::new();
cmd.features(CargoOpt::AllFeatures);
if let Some(path) = manifest_path.as_ref() {
cmd.manifest_path(path);
}
let metadata = cmd
.exec()
.map_err(|e| format_err!("cargo metadata failed: {}", e))?;
let resolve = metadata
.resolve
.as_ref()
.ok_or_else(|| format_err!("cargo metadata did not resolve the depend graph"))?;
let root = resolve
.root
.as_ref()
.ok_or_else(|| format_err!("cargo metadata failed to resolve the root package"))?;
let mut licenses = BTreeSet::new();
let mut crates = Vec::new();
let mut root_pkg = None;
for pkg in metadata.packages {
if &pkg.id == root {
root_pkg = Some(pkg.clone());
}
if let Some(lic_list) = pkg.license.as_ref().map(|l| parse_license(&l)) {
for lic in lic_list.iter() {
licenses.insert(lic.to_string());
}
}
if pkg.license_file.is_some() {
println!("WARNING: {} uses a license-file, not handled", pkg.name);
}
}
let root_pkg = root_pkg
.ok_or_else(|| format_err!("unable to determine package to generate ebuild for"))?;
let lockfile_path = metadata.workspace_root.join("Cargo.lock");
// Generate lockfile if it doesn't exists
if std::fs::metadata(&lockfile_path).is_err() {
generate_lockfile(manifest_path)?;
}
// Check for packages that must be fetched from default registry
let lockfile = Lockfile::load(lockfile_path)?;
for pkg in lockfile.packages {
if let Some(src) = pkg.source {
if src.is_default_registry() {
crates.push(format!("\t{}-{}\n", pkg.name, pkg.version));
}
}
}
Ok(EbuildConfig::from_package(root_pkg, crates, licenses))
}
pub fn write_ebuild(ebuild_data: EbuildConfig, ebuild_path: impl AsRef<Path>) -> Result<()> {
// Open the file where we'll write the ebuild
let mut file = OpenOptions::new()
.write(true)
.create(true)
.truncate(true)
.open(&ebuild_path)
.context(format!(
"Unable to create {}",
ebuild_path.as_ref().display()
))?;
// write the contents out
write!(
file,
include_str!("ebuild.template"),
description = ebuild_data.description.trim(),
homepage = ebuild_data.homepage.trim(),
license = ebuild_data.license.trim(),
crates = ebuild_data.crates.join(""),
cargo_ebuild_ver = env!("CARGO_PKG_VERSION"),
this_year = 1900 + time::now().tm_year,
)
.context(format!(
"Failed to write to {}",
ebuild_path.as_ref().display()
))
}
|
GitWeb