Class: BuildTool::Commands::Recipes::Install

Inherits:
Standard
  • Object
show all
Defined in:
lib/build-tool/commands/recipes/install.rb

Overview

BuildCommand

Instance Attribute Summary

Attributes inherited from Base

#cmd, #options, #parent

Instance Method Summary collapse

Methods inherited from Standard

#complete_module, #complete_modules, #initialize, #log_directory, #while_logging_to

Methods inherited from Base

#<=>, #applicable?, #cleanup_after_vcs_access, #complete_arguments, #complete_readline, #configuration, #debug, #debug2, #do_complete, #each_option, #error, #execute, #fullname, #info, #initialize, #log?, #setup_command, #setup_options, #show_help, #skip_command, #summarize, #teardown_command, #trace, #usage, #verbose, #warn

Methods included from HelpText

#cmdalias, #description, included, #long_description, #name

Constructor Details

This class inherits a constructor from BuildTool::Commands::Standard

Instance Method Details

#do_execute(args) ⇒ Object 



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# File 'lib/build-tool/commands/recipes/install.rb', line 26

def do_execute(args)

    require 'rubygems/user_interaction'

    # Check parameters
    if args.length < 1 or args.length > 2
        return usage("Wrong number of arguments")
    end

    # First param is recipename
    recipename = args[0]
    # Second optional parameter is command name
    if args.length == 2
        commandname = args[1]
    else
        commandname = args[0]
    end
    exename = "#{commandname}-build"
    conffile = Application::instance.local_configuration_dir.join("#{commandname}.yaml")

    # Our executable
    buildtool = Application::instance.application_root.join(
        'bin', 
        Pathname.new( $0 ).basename ).to_s

    # Load the recipe
    recipe = Recipe.find_recipe(recipename)
    if !recipe
        error( "Unknown recipe #{recipename}!" )
        return -1
    end

    info( <<-EOS )
Step 1)
We need to add a symbolic link name '#{exename}' into $PATH.
    EOS

    # Check if there are already commands with exename
    existing = find_in_path( ENV['PATH'], exename )
    found = false   # Was the link found?
    existing.each do |exe|
        if exe.exist?
            if exe.symlink? and File.identical? exe, buildtool
                found = true
            else
                warn( "Found another command named #{exename} at #{exe.to_s}" )
            end
        end
    end

    if found == true
        info( "The symlink already exists. We will skip this step." )
    else
        dirs = find_writable_dirs( ENV['PATH'] )
        dir = nil
        if dirs.empty?
            error( "No writable directory found in $PATH. Please add one (usually $HOME/bin)" )
            error( "or create a symbolic link in a directory that is part of $PATH yourself." )
            error( "> ln -s #{buildtool} #{exename}" )
        elsif dirs.length == 1
            dir = dirs[0]
            info( "Exactly one writeable directory found in $PATH. I will create the symbolic link in" )
            info( "#{dir}" )
        else
            if dirs.length > 1
                ( dir, index ) = Gem::DefaultUserInteraction.ui.choose_from_list(
                    "More than one writeable directory found in $PATH. Which one should i use?", dirs)
            end
        end
        link = Pathname.new(dir).join(exename)
        if link.exist?
            error( "I can not create the link because the 'to' already exists. Please create" )
            error( "a symbolic link in a directory that is part of $PATH yourself." )
            error( "> ln -s #{buildtool} #{exename}" )
        else
            File.symlink(buildtool, Pathname.new(dir).join(exename))
        end
    end

    # Now write the settings file
    info( <<EOS )

Step 2)
A example configuration is imported into the database. I will open a editor so you are able to
adjust it to your needs. The configuration contains comments. Please review them carefully. At
least look at LIB_SUFFIX and MAKEFLAGS.
EOS

    # Now switch to the correct database
    BuildTool::Application::instance.close_database()
    BuildTool::Application::instance.open_database( commandname )

    # Add the recipe setting to the database. Needed to load the configuration and
    # initialize the database.
    rs = BuildTool::Setting.new( :name => 'BUILD_TOOL.RECIPE', :value => recipename )
    rs.save!

    BuildTool::Configuration.edit()

    info( <<EOS )

Step 3)
I will create a local configuration file that is used to override the used
recipe without losing the ability to update. You will find it at 
> #{Application::instance.local_configuration_dir.join( commandname, 'recipe' )}
EOS
    if File.exist?( Application::instance.local_configuration_dir.join(commandname))
        error( "Local configuration for #{commandname} already exists." )
    else
        FileUtils.mkdir_p( Application::instance.local_configuration_dir.join( commandname ) )
        FileUtils.cp(recipe.join("recipe-local"),
                  Application::instance.local_configuration_dir.join( commandname, 'recipe' ))
    end

    info( <<EOS )

Step 4)
You now can start to use your recipe. The first commands you should look for are:
# Show the configuration
> #{exename} info
# Show all modules
> #{exename} module list
# Show detailed info for a module
> #{exename} module info <module>
# Build a module (-u = enable updating)
> #{exename} build -u <module>
EOS

    # We were successful
    return 0
end

#find_in_path(path, name) ⇒ Object 



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# File 'lib/build-tool/commands/recipes/install.rb', line 169

def find_in_path( path, name )
    dirs = []
    path.split(':').each do |dir|
        hd = Pathname.new(dir).join(name)
        if hd.exist?
            dirs << hd
        end
    end
    dirs
end

#find_writable_dirs(path) ⇒ Object 



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# File 'lib/build-tool/commands/recipes/install.rb', line 158

def find_writable_dirs(path)
    dirs = []
    path.split(':').each do |dir|
        dirhd = Pathname.new(dir)
        if dirhd.directory? and dirhd.writable?
            dirs << dir
        end
    end
    dirs
end

#initialize_options ⇒ Object 



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# File 'lib/build-tool/commands/recipes/install.rb', line 19

def initialize_options
    options.banner = "Usage: #{self.fullname} [OPTIONS]... RECIPE [SCRIPTNAME]"
    options.separator( "" )
    options.separator( "Options" )
    super
end