Module: Pocolog::Upgrade::DSL

Defined in:
lib/pocolog/upgrade/dsl.rb

Defined Under Namespace

Classes: Context

Class Method Summary collapse

Class Method Details

.create(output_path, reference_time, source_type, target_type, description: "Converter created at #{Time.now}") ⇒ Object

Create a template converter for given time, source and target types



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# File 'lib/pocolog/upgrade/dsl.rb', line 53

def self.create(output_path, reference_time, source_type, target_type, description: "Converter created at #{Time.now}")
    file_basename = reference_time.iso8601 + source_type.name.gsub('/', ':')
    existing_paths = Pathname.enum_for(:glob, output_path + (file_basename + ".*"))
    max_id = existing_paths.map do |p|
        e = p.extname
        if e =~ /^\.(\d+)$/
            Integer($1)
        end
    end.compact.max
    id = (max_id || 0) + 1

    converter_file = file_basename + "." + id.to_s
    source_tlb     = converter_file + ".source.tlb"
    target_tlb     = converter_file + ".target.tlb"

    (output_path + converter_file).open('w') do |io|
        io.puts "# #{description}"
        io.puts "define \"#{reference_time.to_time}\", \"#{source_type.name}\", \"#{target_type.name}\" do |target_value, source_value|"
        io.puts "    # This would copy everything that can be copied from the source to the target"
        io.puts "    # deep_cast(target_value, source_value)"
        io.puts "    target_value"
        io.puts "end"
    end
    (output_path + source_tlb).open('w') do |io|
        io.write source_type.to_xml
    end
    (output_path + target_tlb).open('w') do |io|
        io.write target_type.to_xml
    end
    return (output_path + converter_file), (output_path + source_tlb), (output_path + target_tlb)
end

.load_dir(load_path, converter_registry) ⇒ Object

Load a directory containing custom converters generated by 'rock-log create-converter'



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# File 'lib/pocolog/upgrade/dsl.rb', line 87

def self.load_dir(load_path, converter_registry)
    converters = Array.new
    Pathname.glob(Pathname.new(load_path) + "*") do |path|
        next if !File.file?(path)
        source_tlb = path.sub(/$/, '.source.tlb')
        target_tlb = path.sub(/$/, '.target.tlb')
        if source_tlb.exist? && target_tlb.exist?
            # Assume this *is* a converter
            source_registry = Typelib::Registry.from_xml(source_tlb.read)
            target_registry = Typelib::Registry.from_xml(target_tlb.read)
            context = Context.new(path.to_s, converter_registry, source_registry, target_registry)
            context.instance_eval(path.read, path.to_s, 1)
            if c = context.converter
                converters << c
            end
        end
    end
    converters
end