forked from vieter-v/vieter
122 lines
2.9 KiB
V
122 lines
2.9 KiB
V
module repo
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import os
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import package
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import util
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// This struct manages a single repository.
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pub struct Repo {
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mut:
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mutex shared util.Dummy
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pub:
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// Where to store repository files
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repo_dir string [required]
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// Where to find packages; packages are expected to all be in the same directory
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pkg_dir string [required]
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}
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pub struct RepoAddResult {
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pub:
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added bool [required]
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pkg &package.Pkg [required]
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}
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// new creates a new Repo & creates the directories as needed
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pub fn new(repo_dir string, pkg_dir string) ?Repo {
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if !os.is_dir(repo_dir) {
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os.mkdir_all(repo_dir) or { return error('Failed to create repo directory: $err.msg') }
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}
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if !os.is_dir(pkg_dir) {
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os.mkdir_all(pkg_dir) or { return error('Failed to create package directory: $err.msg') }
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}
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return Repo{
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repo_dir: repo_dir
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pkg_dir: pkg_dir
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}
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}
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// add_from_path adds a package from an arbitrary path & moves it into the pkgs
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// directory if necessary.
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pub fn (r &Repo) add_from_path(pkg_path string) ?RepoAddResult {
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pkg := package.read_pkg(pkg_path) or { return error('Failed to read package file: $err.msg') }
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added := r.add(pkg) ?
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// If the add was successful, we move the file to the packages directory
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if added {
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dest_path := os.real_path(os.join_path_single(r.pkg_dir, pkg.filename()))
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// Only move the file if it's not already in the package directory
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if dest_path != os.real_path(pkg_path) {
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os.mv(pkg_path, dest_path) ?
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}
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}
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return RepoAddResult{
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added: added
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pkg: &pkg
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}
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}
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// add adds a given Pkg to the repository
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fn (r &Repo) add(pkg &package.Pkg) ?bool {
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pkg_dir := r.pkg_path(pkg)
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// We can't add the same package twice
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if os.exists(pkg_dir) {
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return false
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}
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// We remove the older package version first, if present
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r.remove(pkg.info.name, false) ?
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os.mkdir(pkg_dir) or { return error('Failed to create package directory.') }
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os.write_file(os.join_path_single(pkg_dir, 'desc'), pkg.to_desc()) or {
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os.rmdir_all(pkg_dir) ?
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return error('Failed to write desc file.')
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}
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os.write_file(os.join_path_single(pkg_dir, 'files'), pkg.to_files()) or {
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os.rmdir_all(pkg_dir) ?
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return error('Failed to write files file.')
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}
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r.sync() ?
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return true
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}
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// remove removes a package from the database. It returns false if the package
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// wasn't present in the database.
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fn (r &Repo) remove(pkg_name string, sync bool) ?bool {
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// We iterate over every directory in the repo dir
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for d in os.ls(r.repo_dir) ? {
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name := d.split('-')#[..-2].join('-')
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if name == pkg_name {
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// We lock the mutex here to prevent other routines from creating a
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// new archive while we removed an entry
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lock r.mutex {
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os.rmdir_all(os.join_path_single(r.repo_dir, d)) ?
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}
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if sync {
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r.sync() ?
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}
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return true
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}
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}
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return false
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}
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// Returns the path where the given package's desc & files files are stored
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fn (r &Repo) pkg_path(pkg &package.Pkg) string {
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return os.join_path(r.repo_dir, '$pkg.info.name-$pkg.info.version')
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}
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