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//! Support for Ruby build systems.
//!
//! This module provides functionality for building, testing, and installing
//! Ruby gems using the gem command.
use crate::buildsystem::{guaranteed_which, BuildSystem, Error};
use std::path::{Path, PathBuf};
/// Ruby gem build system.
///
/// This build system handles Ruby gems for distribution and installation.
#[derive(Debug)]
pub struct Gem {
path: PathBuf,
}
impl Gem {
/// Create a new Ruby gem build system.
///
/// # Arguments
/// * `path` - Path to the gem file
///
/// # Returns
/// A new Gem instance
pub fn new(path: PathBuf) -> Self {
Self { path }
}
/// Probe a directory to check if it contains Ruby gem files.
///
/// # Arguments
/// * `path` - Path to check for gem files
///
/// # Returns
/// Some(BuildSystem) if gem files are found, None otherwise
pub fn probe(path: &Path) -> Option<Box<dyn BuildSystem>> {
let mut gemfiles = std::fs::read_dir(path)
.unwrap()
.filter_map(|entry| entry.ok().map(|entry| entry.path()))
.filter(|path| path.extension().unwrap_or_default() == "gem")
.collect::<Vec<_>>();
if !gemfiles.is_empty() {
Some(Box::new(Self::new(gemfiles.remove(0))))
} else {
None
}
}
}
/// Implementation of BuildSystem for Ruby gems.
impl BuildSystem for Gem {
/// Get the name of this build system.
///
/// # Returns
/// The string "gem"
fn name(&self) -> &str {
"gem"
}
/// Create a distribution package from the gem file.
///
/// # Arguments
/// * `session` - Session to run commands in
/// * `installer` - Installer to use for installing dependencies
/// * `target_directory` - Directory to store the created distribution package
/// * `quiet` - Whether to suppress output
///
/// # Returns
/// OsString with the name of the created distribution package, or an error
fn dist(
&self,
session: &dyn crate::session::Session,
installer: &dyn crate::installer::Installer,
target_directory: &std::path::Path,
quiet: bool,
) -> Result<std::ffi::OsString, Error> {
let mut gemfiles = std::fs::read_dir(&self.path)
.unwrap()
.filter_map(|entry| entry.ok().map(|entry| entry.path()))
.filter(|path| path.extension().unwrap_or_default() == "gem")
.collect::<Vec<_>>();
assert!(!gemfiles.is_empty());
if gemfiles.len() > 1 {
log::warn!("More than one gemfile. Trying the first?");
}
let dc = crate::dist_catcher::DistCatcher::default(&session.external_path(Path::new(".")));
session
.command(vec![
guaranteed_which(session, installer, "gem2tgz")?
.to_str()
.unwrap(),
gemfiles.remove(0).to_str().unwrap(),
])
.quiet(quiet)
.run_detecting_problems()?;
Ok(dc.copy_single(target_directory).unwrap().unwrap())
}
/// Run tests for this gem.
///
/// # Arguments
/// * `_session` - Session to run commands in
/// * `_installer` - Installer to use for installing dependencies
///
/// # Returns
/// Always returns Error::Unimplemented as testing is not implemented for gems
fn test(
&self,
_session: &dyn crate::session::Session,
_installer: &dyn crate::installer::Installer,
) -> Result<(), Error> {
Err(Error::Unimplemented)
}
/// Build this gem.
///
/// # Arguments
/// * `_session` - Session to run commands in
/// * `_installer` - Installer to use for installing dependencies
///
/// # Returns
/// Always returns Error::Unimplemented as building is not implemented for gems
fn build(
&self,
_session: &dyn crate::session::Session,
_installer: &dyn crate::installer::Installer,
) -> Result<(), Error> {
Err(Error::Unimplemented)
}
/// Clean build artifacts.
///
/// # Arguments
/// * `_session` - Session to run commands in
/// * `_installer` - Installer to use for installing dependencies
///
/// # Returns
/// Always returns Error::Unimplemented as cleaning is not implemented for gems
fn clean(
&self,
_session: &dyn crate::session::Session,
_installer: &dyn crate::installer::Installer,
) -> Result<(), Error> {
Err(Error::Unimplemented)
}
/// Install the gem.
///
/// # Arguments
/// * `_session` - Session to run commands in
/// * `_installer` - Installer to use for installing dependencies
/// * `_install_target` - Target installation directory
///
/// # Returns
/// Always returns Error::Unimplemented as installation is not implemented for gems
fn install(
&self,
_session: &dyn crate::session::Session,
_installer: &dyn crate::installer::Installer,
_install_target: &crate::buildsystem::InstallTarget,
) -> Result<(), Error> {
Err(Error::Unimplemented)
}
/// Get dependencies declared by this gem.
///
/// # Arguments
/// * `_session` - Session to run commands in
/// * `_fixers` - Build fixers to use if needed
///
/// # Returns
/// Always returns Error::Unimplemented as dependency discovery is not implemented for gems
fn get_declared_dependencies(
&self,
_session: &dyn crate::session::Session,
_fixers: Option<&[&dyn crate::fix_build::BuildFixer<crate::installer::Error>]>,
) -> Result<
Vec<(
crate::buildsystem::DependencyCategory,
Box<dyn crate::dependency::Dependency>,
)>,
Error,
> {
Err(Error::Unimplemented)
}
/// Get outputs declared by this gem.
///
/// # Arguments
/// * `_session` - Session to run commands in
/// * `_fixers` - Build fixers to use if needed
///
/// # Returns
/// Always returns Error::Unimplemented as output discovery is not implemented for gems
fn get_declared_outputs(
&self,
_session: &dyn crate::session::Session,
_fixers: Option<&[&dyn crate::fix_build::BuildFixer<crate::installer::Error>]>,
) -> Result<Vec<Box<dyn crate::output::Output>>, Error> {
Err(Error::Unimplemented)
}
/// Convert this build system to Any for downcasting.
///
/// # Returns
/// Reference to self as Any
fn as_any(&self) -> &dyn std::any::Any {
self
}
}