Class: PackageDataBase

Inherits:
Object
  • Object
show all
Includes:
FileUtils
Defined in:
lib/packagedata.rb

Instance Method Summary collapse

Constructor Details

#initialize(root = '/') ⇒ PackageDataBase

Returns a new instance of PackageDataBase.



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# File 'lib/packagedata.rb', line 43

def initialize(root = '/')
    @repos = []
    set_root(root)
end

Instance Method Details

#available?(package) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/packagedata.rb', line 198

def available?(package)
    true if get_available_packages.include?(package)
end

#get_available_packages ⇒ Object 



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# File 'lib/packagedata.rb', line 162

def get_available_packages()
    list = []
    for repo in get_repos
        list += Dir["#{@sync_database}/#{repo}/*"].map() { |package| File.basename(package) }
        list.delete("repo.yaml")
    end
    return list
end

#get_data(package) ⇒ Object 



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# File 'lib/packagedata.rb', line 63

def get_data(package)
    begin
        package_data = File.join(@install_database, package, 'packageData')
        data = normalise(YAML::load_file(package_data))
    rescue
        data = {}
        data['version'] = "0"
    end
    return data
end

#get_files(package) ⇒ Object 



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# File 'lib/packagedata.rb', line 127

def get_files(package)
    file = File.join(@install_database, package, 'files')
    file_list = []
    IO.readlines(file).each do |entry|
        file_list.push(entry)
    end
    return file_list
end

#get_group_repo(group) ⇒ Object 



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# File 'lib/packagedata.rb', line 171

def get_group_repo(group)
    group_repo = nil
    for repo in get_repos
        data = YAML::load_file("#{@sync_database}/#{repo}/repo.yaml")
        unless data[group] == nil
            group_repo = repo
        end
    end
    return group_repo
end

#get_installed_packages ⇒ Object 



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# File 'lib/packagedata.rb', line 190

def get_installed_packages()
    Dir["#{@install_database}/*"].map() { |package| File.basename(package) }
end

#get_remove_script(package) ⇒ Object 



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# File 'lib/packagedata.rb', line 136

def get_remove_script(package)
    remove_script = File.join(@install_database, package, 'remove')
    File.read(remove_script)
end

#get_repo(package) ⇒ Object 



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# File 'lib/packagedata.rb', line 90

def get_repo(package)

    package_repo = ""
    version = "0"

    get_repos.each do |repo|
        data = Dir["#{@sync_database}/#{repo}/*"].map { |pack| File.basename(pack) }
        data.each do |member|
            if member == package
                package_repo = repo
                package_data = File.join(@sync_database + "/" + repo, package)
                data = normalise(YAML::load_file(package_data))
                unless (runs_on_this?(data['architecture'].to_s))
                    data['version'] = "0"
                end
                if version >= data['version']
                    version = data['version']
                    package_repo = repo
                end
            
            end
        end
    end
    return package_repo
end

#get_repodata(repo) ⇒ Object 



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# File 'lib/packagedata.rb', line 182

def get_repodata(repo)
    if get_repos.include?(repo)
        return YAML::load_file("#{@sync_database}/#{repo}/repo.yaml")
    else
        return {}
    end
end

#get_repos ⇒ Object 



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# File 'lib/packagedata.rb', line 83

def get_repos()
    list = Dir.entries("/etc/post/repos.d")
    list.delete('.')
    list.delete('..')
    return list
end

#get_root ⇒ Object 



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# File 'lib/packagedata.rb', line 48

def get_root()
    @root
end

#get_sync_data(package) ⇒ Object 



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# File 'lib/packagedata.rb', line 116

def get_sync_data(package)
    repo = File.join(@sync_database, get_repo(package))
    package_data = File.join(repo, package)
    data = normalise(YAML::load_file(package_data))
    
    unless (runs_on_this?(data['architecture'].to_s))
        data['version'] = "0"
    end
    return data
end

#get_url(repo) ⇒ Object 



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# File 'lib/packagedata.rb', line 206

def get_url(repo)
    data = YAML::load_file("/etc/post/repos.d/#{repo}")
    return data['url']
end

#install_package(package_data, remove_file, installed_files) ⇒ Object 



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# File 'lib/packagedata.rb', line 141

def install_package(package_data, remove_file, installed_files)
    data = YAML::load_file(package_data)

    dir_name = File.join(@install_database, data['name'])
    file_name = File.join(dir_name, 'files')
    package_data_name = File.join(dir_name, 'packageData')
    remove_file_name = File.join(dir_name, 'remove')

    mkdir_p(dir_name)
    install(package_data, package_data_name)
    install(remove_file, remove_file_name)

    file = open(file_name, 'w')
    file.puts(installed_files)
end

#installed?(package) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/packagedata.rb', line 194

def installed?(package)
    true if get_installed_packages.include?(package)
end

#normalise(data) ⇒ Object 



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# File 'lib/packagedata.rb', line 74

def normalise(data)
    data['version'] = data['version'].to_s()

    data['conflicts'] = [] if data['conflicts'] == nil
    data['dependencies'] = [] if data['dependencies'] == nil
    data['version'] = "0" if data['version'].empty?
    return data
end

#remove_package(package) ⇒ Object 



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# File 'lib/packagedata.rb', line 157

def remove_package(package)
    dir_name = File.join(@install_database, package)
    rm_r(dir_name)
end

#set_root(root) ⇒ Object 



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# File 'lib/packagedata.rb', line 52

def set_root(root)
    @root = root
    @database_location = "#{@root}/var/lib/post/"
    @install_database = File.join(@database_location, "installed")
    @sync_database = File.join(@database_location, "available")
    unless File.exist?(@database_location)
        mkdir_p(@install_database)
        mkdir_p(@sync_database)
    end
end

#update_database ⇒ Object 



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# File 'lib/packagedata.rb', line 211

def update_database()
    rm_r("/tmp/post") if (File.exists?("/tmp/post"))
    rm_r(@sync_database) if (File.exists?(@sync_database))

    mkdir_p("/tmp/post")
    cd("/tmp/post")
    mkdir_p(@sync_database)

    for repo in get_repos

        source_url = get_url(repo) + '/info.tar'
        if source_url.include?("file://")
            source_url.sub!("file://", '')
            cp(source_url, 'info.tar')
        else
            File.open('info.tar', 'w') do |file|
                file.puts(open(source_url).read)
            end
        end

        system("tar xf info.tar")
        cp_r('info', "#{@sync_database}/#{repo}")
    
        source_url = get_url(repo) + '/repo.yaml'
        if source_url.include?("file://")
            source_url.sub!("file://", '')
            cp(source_url, 'repo.yaml')
        else
            File.open('repo.yaml', 'w') do |file|
                file.puts(open(source_url).read)
            end
        end
        cp_r('repo.yaml', "#{@sync_database}/#{repo}/repo.yaml")
        rm('repo.yaml')
        rm('info.tar')
        rm_r('info')
    end
end

#upgrade?(package) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/packagedata.rb', line 202

def upgrade?(package)
    true if (available?(package)) and (get_sync_data(package)['version'] > get_data(package)['version'])
end