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/*
* 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 license;
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 license::{normalize_license, split_spdx_license};
use metadata::EbuildConfig;
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| split_spdx_license(&l)) {
for lic in lic_list.iter() {
if let Some(norm) = normalize_license(&lic) {
// Add the normalized license name
licenses.insert(norm.to_string());
} else {
// Add the unknown license name to be corrected manually
println!("WARNING: unknown license \"{}\", please correct manually", &lic);
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 = time::OffsetDateTime::now_utc().year(),
)
.context(format!(
"Failed to write to {}",
ebuild_path.as_ref().display()
))
}
|
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